SELECTIVE TRANSMISSION POWER CONTROL

A method for wireless transmission the method includes differentiating between at least a first type of video data and a second type of video data, where at least the first video type is more important than the second video type. The method provides independently controlling the amounts of transmission power allocated to each of the types of data; and multiplexing and transmitting the types of data with their allocated amounts of transmission power.

System, device, and method for robust video transmission utilizing user datagram protocol (UDP)

System, device, and method for transmitting a video via a User Datagram Protocol (UDP) over Internet Protocol (IP) communication link. A method includes: generating by a video encoder a set of N packets of compressed data per each frame of the video, wherein N is a natural number; and upon generation of each set of N packets for a specific frame of that video, immediately performing the transmitting of the set of N packets that corresponds to a single encoded video frame, via that UDP over IP communication link, without waiting for encoding or packetization of any other video frame of that video. Each packet of that video frame includes at least: a Coarse video data packet-portion, and a Fine video data packet-portion, and optionally also a Header packet-portion that includes sub-frames mapping information.

Parameter selection in a communication system

A method is provided for automatically optimizing parameter selection in a communication system having one or more channels for transmitting and receiving signals by the steps of: receiving a signal from a channel; characterizing impairments in the channel while gathering statistics using the received signal; analyzing the impairments to obtain recommendations for parameter modifications for improved performance; and modifying the parameters based on the recommendations. Other systems and methods are disclosed.

Noise analysis in a communication system

A system is provided to automatically estimate performance of a receiver for receiving input signals, the input signals having a carrier frequency and a baud rate, from a channel in a communication system and the effect of highly correlated noise cancellation on performance of the receiver, while no active transmission is occurring on the channel, comprising: a digital front end in the receiver for receiving samples of the input signals; a predictor coupled to the digital front end for predicting highly correlated noise in a second sample of the input signal; and a subtraction unit coupled to the predictor for subtracting the predictor output from the second sample to determine residual noise in the second sample. Other systems and methods are disclosed.

Method and apparatus for capacity increase and enhanced communications performance in catv networks

Method and apparatus for capacity increase and enhanced communications performance in CATV networks

In a cable television (CATV) data communication network, channel throughput and communications robustness are increased in a manner that improves speed of data transmission while maintaining compatibility with existing specifications and equipment. Enhanced throughput can be realized using the return channel of the CATV network. Alternatively, data retransmission and/or diversity techniques can be used to improve throughput.

VERFAHREN UND VORRICHTUNG ZUR ERHÖHUNG DER KAPAZITÄT UND VERBESSERUNG DER ÜBERTRAGUNGSLEISTUNG IN KABELFERNSEHNETZWERKEN

Apparatus and method for applying unequal error protection during wireless video transmission

A method for wireless transmission of video including component data bytes representing components of a video block includes applying transmission bit coding adapted to provide relatively greater error protection to wireless transmission bits of a wireless transmission frame corresponding to bits of the component data byte which are more visually significant than to those transmission bits of the transmission frame corresponding to bits of the component data byte which are less visually significant.

Analog signal transmission with multiple antennas

A method for analog transmission of video from a transmitter using multiple transmit antennas includes transmitting analog video signals through at least two antennas to a receiver, monitoring at the receiver an attribute of the channels between the transmit antennas and an antenna of the receiver, and changing a phase and magnitude of an analog video signal being transmitted through at least one of the at least two antennas responsive to the monitoring. Additionally, a method for analog transmission of video signals using multiple transmit antennas includes space-time coding.

Wireless Transmission of High Quality Video

A method of transmitting video images. The method includes providing a high definition video stream, compressing the video stream using an image domain compression method, in which each pixel is coded based on a vicinity of the pixel and transmitting the compressed video stream over a fading transmission channel.

Channel Monitoring for Improved Parameter Selection in a Communication System

A method is provided for automatically improving throughput of an active channel in a communication system comprising: receiving input from one or more modules that identify and characterize impairments in the active channel; monitoring the input to track changes in the impairments; and changing channel parameters to improve throughput on the channel based on the changes in the impairments. Other systems and methods are disclosed.

DEVICE METHOD AND SYSTEM FOR TRANSMISSION AND RECEPTION OF DATA

Disclosed is a method, circuit and system for transmission and reception of data, including video data. There is provided a multi-constellation data to symbol mapping logic, circuit or module integral with or otherwise functionally associated with a transmitter and a corresponding multi-constellation symbol to data de-mapping logic, circuit or module integral or otherwise functionally associated with a receiver. The multi-constellation mapping and corresponding de-mapping logic, circuit or module may be characterized by a non-uniform distribution of symbols, and optionally may be characterized by a set of symbol clusters, wherein symbol clusters are of the same or varying sizes and may be spaced either at uniform or non-uniform distances from one another.

Method and apparatus for capacity increase and enhanced communications performance in CATV networks

In a cable television (CATV) data communication network, channel throughput and communications robustness are increased in a manner that improves speed of data transmission while maintaining compatibility with existing specifications and equipment. Enhanced throughput can be realized using the return channel of the CATV network. Alternatively, data retransmission and/or diversity techniques can be used to improve throughput.

Apparatus and method for uncompressed, wireless transmission of video

An apparatus and method for wireless transmission of uncompressed HDTV video overcomes the challenges of sending vast amounts of information over a wireless link. This is achieved by direct mapping of transformation coefficients of the video components to communication symbols, such as OFDM symbols. A main portion of the important transform coefficients, for example the MSBs of the coefficients representing lower frequencies of each of the video components, and in particular the quantized values of the lower frequencies components, are sent in a coarse representation using, for example, QPSK or QAM. The coefficients representing higher frequencies of the video components, and the quantization error values of the lower frequencies components, or some, non-linear transformation thereof, are sent as pairs of real and imaginary portions of a complex number that comprises a point in a fine constellation. The invention further provides a delay-less and buffer-less implementation of transmitter ...

Methods circuits devices and systems for transmission and display of video

Disclosed are methods, circuits, devices and associated executable code for facilitating transmission, reception and presentation (e.g. rendering) of video information/signals on a video display unit such as a flat-screen display, a touchscreen and/or a tablet computing platform. There may be provided a video display unit adapted to receive video signals through two or more video signal paths, wherein one of the signal paths (i.e. a first signal path) may be a wired signal path. Another signal path (i.e. a second signal path) may be a wireless signal path. The display unit may be matched or paired to a matched computing platform. The paired matched computing platform may send video signals to the display unit along the wired signal path, e.g. when the display unit is docked with the matched computing platform. The paired matched computing platform may send video signals to the display unit along the wireless signal path, e.g. when the display unit is disconnected from the matched computing ...

IN-SERVICE MONITORING OF DFS SIGNALS DURING ANALOG VIDEO TRANSMISSION

An in-service radar detection unit for a wireless analog video receiver includes a channel estimator, a signal recovery vector creator, a signal estimator, a radar detector, and a control transmitter. The channel estimator generates a channel estimation between a transmitter and a receiver from a plurality of signals received on a plurality of antennas. The signal recovery vector creator creates a non-zero nulling vector from the channel estimation. The signal estimator utilizes the nulling vector to restore an additional signal, other than an analog video, from the received signals. The radar detector detects a radar signal in the additional signal, and the control transmitter transmits an indication of the detected radar signal using at least one of the antennas. 1. An in-service radar detection unit for a wireless analog video receiver , the unit comprising:a channel estimator to generate a channel estimation between a transmitter and said receiver from a plurality of signals received on a plurality of antennas;a signal recovery vector creator to create a non-zero nulling vector from said channel estimation;an other signal estimator to utilize said nulling vector to restore an additional signal other than an analog video from said received signals;a radar detector to detect a radar signal in said additional signal; anda control transmitter to transmit an indication of said detected radar signal using at least one of said antennas.2. A unit according to wherein said signal recovery vector creator to create an equalization vector and also comprising:a video signal estimator to restore said analog video from said received signals using said equalization vector.3. A unit according to and also comprising an analog video handler to display said restored video from said video signal estimator on a display.4. A unit according to wherein one of said plurality of antennas is used only by said control transmitter.5. A unit according to wherein said unit is located in a ...

Constellation selection in a communication system

A method is provided to provide data to automatically estimate channel performance in a communication system if a different order constellation is used comprising the steps of: receiving an input signal from the channel; passing the input signal to a slicer having an output signal; determining signal noise by taking the difference between the input signal and output signal; identifying a beginning of a noise event when the signal noise is greater than a predefined first threshold; identifying an end of a noise event when the signal noise is less than a predefined second threshold; and providing for output the beginning of the noise event and the end of the noise event. Other systems and methods are disclosed.

Method and Apparatus for Using the Video Blanking Period for the Maintenance of a Modem that is Used for Wireless Transmission of Video

The vertical blanking period is an idle period in video transmission that was originally intended for allowing the trace back of an electron beam to its point of origin. When sending the video signal over a wireless channel, the wireless channel may remain free of transmission of data during this period. However, in wireless transmission of a video signal in general, and in the transmission of an essentially uncompressed video signal in particular, there is a need to use all the bandwidth available, especially when transmitting a high-definition video signal. Therefore, a method is taught for using the vertical blanking period of a video signal for modem maintenance.

VIDEO COMPRESSION SYSTEM

A method for long-term reference prediction video compression, includes: dividing a viewing area into a plurality of viewing sections; measuring an elevation and an azimuth of a field of view (fov) in one or more of the viewing sections; determining a storage location of a video frame associated with the field of view based on the measured elevation and azimuth. A long-term reference prediction video compression encoder, includes: a buffer for storing long-term video frames; a detector to measure an elevation and an azimuth of a field of view associated with a video frame; a buffer manager to determine, based on the measured elevation and azimuth, to store data associated with the video frame in the long-term frame buffer.

APPARATUS AND METHOD FOR UNCOMPRESSED, WIRELESS TRANSMISSION OF VIDEO

An apparatus and method including a transmitter to generate a wireless transmission corresponding to video information is disclosed. The transmitter includes an encoder to generate at least one symbol coordinate representing a first component of a data value characterizing a portion of the video information, where the at least one symbol coordinate corresponds to a point in a constellation of possible symbol points; and the encoder is further adapted to use a second component of the data value to adjust at the one symbol coordinate.

Efficient compression of Bayer images

A method includes, in an encoder, dividing an image into blocks, and producing respective compressed descriptions of the blocks. First data, which contains at least some of the compressed descriptions, is generated such that a compressed description of each block within the first data is accessible irrespective of the compressed descriptions of the other blocks. Second data, which contains at least a portion of the compressed descriptions or of the blocks and has a better error resilience than the first data, is also generated. The first and second data are stored in a memory. At a decoder, the first and second data are read from the memory, and the image is reconstructed from the read first and second data.

Methods circuits & systems for transmitting and receiving data, including video data

Disclosed are methods, circuits, apparatus, devices and systems for transmitting and receiving data, including video data. All or some portions of a video frame (i.e. video block) may be processed and/or converted into frequency domain coefficients (e.g. DCT, DFT, etc.). Some or all of the frequency domain coefficients may be encapsulated within a transmission frame (e.g. an OFDM based transmission frame) and may be transmitted to a functionally associated receiver over a transmission channel. Not all frequency coefficients may be encapsulated and transmitted, possibly due to bandwidth limitations on the transmission channel. Selection (i.e. allocation) of one or more frequency coefficients to be transmitted may be based on a Visual Quality Metric (VQM) of the associated video block, such that encapsulation and transmission preference/priority may be given to maximize the VQM of the video block. A higher video block VQM may result in a lower transmitted distortion. 1. A video source transceiver for transmitting video information , said transceiver comprising:a video block component selector (VBCS) adapted to select from each of a set of video blocks one or more video block components, wherein components selection for a given video block in the set is at least partially based on a visual quality metric (VQM) of the given video block.2. The video source transceiver according to claim 1 , wherein the number of video block components selected is directly related to the VQM.3. The video source transceiver according to claim 1 , further comprising a superblock aggregator adapted to aggregate video information into a set of video blocks.4. The video source transceiver according to claim 3 , wherein components selection for a given video block in the set is at least partially based on a visual quality metric (VQM) of a neighboring (intra-set) video block.5. The video source transceiver according to claim 1 , further comprising a channel bandwidth estimator adapted to ...

VERFAHREN UND VORRICHTUNG ZUR ERHÖHUNG DER KAPAZITÄT UND VERBESSERUNG DER ÜBERTRAGUNGSLEISTUNG IN KABELFERNSEHNETZWERKEN

Bit-interleaved coded modulation for CATV upstream channels

A bit-interleaved encoder for a CATV upstream channel is provided having a convolutional encoder for receiving data values, a bit-interleaver interconnected with said encoder, and a symbol mapper interconnected with said bit-interleaver.

Noise identification in a communication system

A method is provided to automatically identify noise events in a channel of a communication system comprising the steps of: receiving an input signal from the channel; determining the mean energy of the input signal; determining the recent energy of the input signal; identifying a beginning of the noise event when the recent energy is greater than the product of the mean energy and a predefined first threshold; identifying an end of a noise event when the recent energy is less that the product of the mean energy and a predefined second threshold; and providing for output the beginning of the noise event and the end of the noise event. Other systems and methods are disclosed.

Apparatus and method for uncompressed, wireless transmission of video

An apparatus and method for wireless transmission of uncompressed HDTV video overcomes the challenges of sending vast amounts of information over a wireless link. This is achieved by direct mapping of transformation coefficients of the video components to communication symbols, such as OFDM symbols. A main portion of the important transform coefficients, for example the MSBs of the coefficients representing lower frequencies of each of the video components, and in particular the quantized values of the lower frequencies components, are sent in a coarse representation using, for example, QPSK or QAM. The coefficients representing higher frequencies of the video components, and the quantization error values of the lower frequencies components, or some, non-linear transformation thereof, are sent as pairs of real and imaginary portions of a complex number that comprises a point in a fine constellation. The invention further provides a delay-less and buffer-less implementation of transmitter ...

Method and apparatus for using the video blanking period for the maintenance of a modem that is used for wireless transmission of video

The vertical blanking period is an idle period in video transmission that was originally intended for allowing the trace back of an electron beam to its point of origin. When sending the video signal over a wireless channel, the wireless channel may remain free of transmission of data during this period. However, in wireless transmission of a video signal in general, and in the transmission of an essentially uncompressed video signal in particular, there is a need to use all the bandwidth available, especially when transmitting a high-definition video signal. Therefore, a method is taught for using the vertical blanking period of a video signal for modem maintenance.

Error correction code parameter selection in a communication system

A method is disclosed for providing data for automatically estimating channel performance if different parameters of a Reed-Solomon (RS) code are used in a communication system while transmission is occurring in the communication system without changing the current Reed-Solomon (RS) code parameters.

WIRELESS VIDEO TRANSMISSION

A system for wireless video transmission includes a video compression unit to generate a description of DCT taps, a linear mapper to generate transmission payload from the DCT taps, and a wireless transmitter to map the transmission payload into constellation points, wherein the real part and the imaginary part of each of the constellation points is a monotonic function of some of the DCT taps.

METHODS CIRCUITS & SYSTEMS FOR WIRELESS VIDEO TRANSMISSION

Disclosed are methods, circuits & systems for transmitting a video stream over a wireless data link and devices implementing said methods, circuits & systems. A host device may include a video transmitter adapted to transmit a video stream via a shared radio-frequency (RF) transmitter. The video stream may be processed, encoded, edited and/or managed by one or more baseband processor(s) functionally associated with the RF transmitter before transmission. The video transmitter may include a video baseband processing logic (VBBPL) for processing video data and a data baseband processing logic (DBBPL) for processing a plurality of data types. The VBBPL may be adapted to encode raw (i.e. substantially uncompressed) video data and/or append control layer data (e.g. overlay video data) to encoded video. 1. A video circuit comprising:video baseband processing logic (VBBPL) adapted to manage video specific wireless communication sessions;data baseband processing logic (DBBPL) adapted to manage data specific wireless communication sessions; anda radio-frequency (RF) transmission chain (TX) functionally associated with said VBBPL and with said DBBPL, and adapted to generate wireless transmission signals corresponding to outputs of said VBBPL and said DBBPL, wherein the outputs of the VBBPL and the DBBPL are interleaved.2. The video circuit according to claim 1 , wherein said VBBPL further comprises a video encoding logic to encode raw video data.3. The video circuit according to claim 2 , wherein said video encoding logic is Wireless High Definition Interface (WHDI) compliant.4. The video circuit according to claim 2 , wherein said video encoding logic is H.264 compliant.5. The video circuit according to claim 2 , wherein said VBBPL further comprises encoded video editing logic adapted to edit encoded video data.6. The video circuit according to claim 5 , wherein the encoded video data is received from said VBBPL.7. The video circuit according to claim 5 , wherein the encoded ...

Use of Pilot Symbols for Data Transmission in Uncompressed, Wireless Transmission of Video

The uncompressed wireless transmission of video, as with many other wireless applications, requires constant knowledge of channel characteristics at the receiver end. To estimate the channel and track its changes, pilots containing known data are sent in various parts of the used bandwidth. The use of such pilots reduces the effective bandwidth available for data transmission. Due to the relative high immunity to introduced interference of certain transmission modes, such as QPSK and QAM, pilots can be modulated by digital data components. At the receiver, pilots are demodulated and used for a decision-directed circuit to determine the characteristics of the transmission channel. The additional bandwidth allows a higher data rate which may be such used for various purposes as diversity, coding, etc. Such use of pilot signals is of particular advantage in the wireless transmission of the DC and near DC components of essentially uncompressed video.

METHOD, DEVICE AND SYSTEM OF ERROR-PROTECTION OF A WIRELESS VIDEO TRANSMISSION

Some demonstrative embodiments of the invention include devices, systems and/or methods of error-protection of a wireless video transmission. Some demonstrative embodiments of the invention include a wireless transmitter to transmit a wireless transmission including a data stream corresponding to at least a video signal. The data stream may include a plurality of data components, which are protected according to an unequal error protection scheme. At least first and second data components of the plurality of data components may be protected by first and second error protection mechanisms, respectively. Other embodiments are described and claimed.

Method and device for combating PCM line impairments

A method and device for combating logarithmic quantization and Robbed Bit Signaling (RBS) impairments that..are typical to PCM telephone lines is descried. An apparatus is described which includes a front-end unit which receives samples of the digital PCM line, an impairment identifier unit which identifies samples that have a high likelihood to have, large impairments due to the PCM line, an impairment estimator unit which estimates the value of impairment caused by the digital line, a samples reconstructor unit which fixes received samples by subtracting from them the value of the estimated impairment and an output unit transfers the reconstructed samples to a receiver. The method allows improving signal quality at the output of the PCM line, and thus improving data rates and robustness of digital communication receivers, and particularly of V.34 receivers, or V.90 transceivers that are digitally linked to the PCM, line.

Interpolation image compression

A method of compressing an image formed of pixels. The method includes providing a pixel of the image, to be encoded, selecting at least two pixels of the image, other than the encoded pixel, defining a straight line including the encoded pixel, to serve as prediction pixels, calculating a prediction value for the encoded pixel using at least the selected pixels, determining a difference between the calculated prediction value and the actual value of the encoded pixel, encoding the determined difference, such that the encoding error is bounded; and repeating for at least 5% of the pixels of the image.

Video compression system

A method for long-term reference prediction video compression, includes: dividing a viewing area into a plurality of viewing sections; measuring an elevation and an azimuth of a field of view (fov) in one or more of the viewing sections; determining a storage location of a video frame associated with the field of view based on the measured elevation and azimuth. A long-term reference prediction video compression encoder, includes: a buffer for storing long-term video frames; a detector to measure an elevation and an azimuth of a field of view associated with a video frame; a buffer manager to determine, based on the measured elevation and azimuth, to store data associated with the video frame in the long-term frame buffer.

Apparatus and method for applying unequal error protection during wireless video transmission

Wireless transmission of high-definition video, whether essentially uncompressed or compressed, is prone to errors during reception due to the condition of the wireless link. To ensure video quality during changing link conditions it is desirable to ensure that those portions of the video that represent the more important components of the video signal, such as the lower special frequencies or most significant bits, are assured correct reception at the receiver. Bandwidth limitations of the wireless link affect the amount of data that can be sent over the link. Hence, using a high level error recovery for all of the information is not feasible. Accordingly, a method and apparatus for unequal error protection is disclosed that provides a higher level of error protection to the more important elements of the transmission while affording less error protection to the other elements of the transmission.

OFDM modem for transmission of continuous complex numbers

The invention enables the transmission of continuous complex numbers using a symbol based transmission scheme such as OFDM. Accordingly, complex numbers are mapped to the constellation map, enabling a fine granularity of constellation points. This scheme may be used, for example, in the transmission of video where the coefficients representing the higher frequency of each of the video components, as well as the quantization error values of the DC and near DC components, or some, possibly non-linear transformation thereof, are sent as pairs of real and imaginary portions of a complex number that comprises a symbol.

SINGLE CHANNEL BI-DIRECTIONAL COMMUNICATIONS CONTROL

A method of allocating time for uplink communications between a remote control unit and a drone system includes interrupting downlink communications from the drone.

Method and apparatus for combating impulse noise in digital communications channels

This invention is particularly useful as a system for digital communications over channels that suffer from impulse noise, and particularly over return cable TV channels, downstream cable TV channels, and digital subscriber loops (DSL) channels for high speed communications over twisted pair copper lines.

Method of monitoring volumetric change of a lung

There is provided a method, apparatus, computer program product and wearable device for monitoring volumetric change of a lung during a breathing cycle by using an electronic signal. The method comprises: receiving by a receiver an electronic signal transmitted from a transmitter, wherein at least part of a path of the signal contours at least part of a chest wall of the lung; determining by the receiver measurements of an attribute of the signal received at the beginning and the end of a time interval during the breathing cycle; calculating by a processor a change in length of the signal path during the time interval based on the measurements of the attribute of the signal received at the beginning and the end of the time interval; and calculating by the processor a volumetric change during the time interval based on the change in signal path length.

Method and apparatus for using the video blanking period for the maintenance of a modem that is used for wireless transmission of video

The vertical blanking period is an idle period in video transmission that was originally intended for allowing the trace back of an electron beam to its point of origin. When sending the video signal over a wireless channel, the wireless channel may remain free of transmission of data during this period. However, in wireless transmission of a video signal in general, and in the transmission of an essentially uncompressed video signal in particular, there is a need to use all the bandwidth available, especially when transmitting a high-definition video signal. Therefore, a method is taught for using the vertical blanking period of a video signal for modem maintenance.

METHOD OF MONITORING VOLUMETRIC CHANGE OF A LUNG

There is provided a method, apparatus, computer program product and wearable device for monitoring volumetric change of a lung during a breathing cycle by using an electronic signal. The method comprises: receiving by a receiver an electronic signal transmitted from a transmitter, wherein at least part of a path of the signal contours at least part of a chest wall of the lung; determining by the receiver measurements of an attribute of the signal received at the beginning and the end of a time interval during the breathing cycle; calculating by a processor a change in length of the signal path during the time interval based on the measurements of the attribute of the signal received at the beginning and the end of the time interval; and calculating by the processor a volumetric change during the time interval based on the change in signal path length. 1. A method of detecting a breathing pattern during one or more breathing cycles by using an electronic signal , the method comprising:receiving by a receiver an electronic signal transmitted from a transmitter, wherein a path of the electronic signal contours at least part of a circumference of a chest wall;determining by the receiver measurements of an attribute of the electronic signal received at the beginning and the end of a time interval during a breathing cycle of the one or more breathing cycles;calculating by a processor a change in length of the path of the electronic signal during the time interval based on the measurements of the attribute of the electronic signal; anddetecting by the processor a breathing pattern based on the change in length of the path of the electronic signal.2. The method of claim 1 , wherein the breathing pattern is selected from a set of pre-defined breathing patterns including pathological breathing patterns.3. The method of claim 1 , wherein the electronic signal is a radio frequency (RF) signal.4. The method of claim 3 , wherein the RF signal is selected such that a carrier ...

System, apparatus, and method of Wi-Fi video transmission utilizing linear mapping of transmission payload into constellation points

A system for wireless video transmission includes a video compression unit to generate a description of DCT taps, a linear mapper to generate transmission payload from the DCT taps, and a wireless transmitter to map the transmission payload into constellation points, wherein the real part and the imaginary part of each of the constellation points is a monotonic function of some of the DCT taps.

TRANSMITTING VIDEO/AUDIO CONTENT FROM A MOBILE COMPUTING OR COMMUNICATIONS DEVICE

Disclosed is a method, circuit and system for facilitating transmission of video and/or audio content from a computing/communications device such as Personal Computer, Cellular Phone, Smart-Phone, Personal Digital Assistant (PDA), Laptop Computer, Tablet, E-Book reader and/or any variation thereof. Video/audio content stored on, generated or received by, or otherwise displayable upon a computing/communications device may be at least partially processed using computational resources (e.g. central processing unit (CPU), graphics processing unit (GPU), digital signal processor (DSP), application processor, etc.) utilized by another application of the device. The video/audio content may be transmitted using one or more communication resources (e.g. Wi-Fi) utilized by another application of the device.

ANALOG SIGNAL TRANSMISSION WITH MULTIPLE ANTENNAS

A method for analog transmission of video from a transmitter using multiple transmit antennas includes transmitting analog video signals through at least two antennas to a receiver, monitoring at the receiver an attribute of the channels between the transmit antennas and an antenna of the receiver, and changing a phase and magnitude of an analog video signal being transmitted through at least one of the at least two antennas responsive to the monitoring. Additionally, a method for analog transmission of video signals using multiple transmit antennas includes space-time coding.

Interpolation image compression

A method of compressing an image formed of pixels. The method includes providing a pixel of the image, to be encoded, selecting at least two pixels of the image, other than the encoded pixel, defining a straight line including the encoded pixel, to serve as prediction pixels, calculating a prediction value for the encoded pixel using at least the selected pixels, determining a difference between the calculated prediction value and the actual value of the encoded pixel, encoding the determined difference, such that the encoding error is bounded; and repeating for at least 5% of the pixels of the image.

OFDM Modem for Transmission of Continuous Complex Numbers

The invention enables the transmission of continuous complex numbers using a symbol based transmission scheme such as OFDM. Accordingly, complex numbers are mapped to the constellation map, enabling a fine granularity of constellation points. This scheme may be used, for example, in the transmission of video where the coefficients representing the higher frequency of each of the video components, as well as the quantization error values of the DC and near DC components, or some, possibly non-linear transformation thereof, are sent as pairs of real and imaginary portions of a complex number that comprises a symbol.

Single channel bi-directional communications control

A method of allocating time for uplink communications between a remote control unit and a drone system includes interrupting downlink communications from the drone.

Method, system and associated modules for transmission of complimenting frames

Disclosed are methods, circuits, devices and systems for transmission of two visually complimenting video frames (e.g. left-eye frame data and right-eye frame data) of a three dimensional video stream. A set of visually complimenting video frames intended to make a substantially three dimensional image may be referred to as a three dimensional impression set. A video signal/stream in a first (e.g. 3D) format may be processed for transmission over a wireless link, wherein processing may include generating one or more transmission frames including data for at least two complimenting video frames. The data for both complimenting video frames is uncompressed.

Apparatus and method for uncompressed, wireless transmission of video

An apparatus and method including a transmitter to generate a wireless transmission corresponding to video information is disclosed. The transmitter includes an encoder to generate at least one symbol coordinate representing a first component of a data value characterizing a portion of the video information, where the at least one symbol coordinate corresponds to a point in a constellation of possible symbol points; and the encoder is further adapted to use a second component of the data value to adjust at the one symbol coordinate.

Methods circuits devices and systems for transmission and display of video

Disclosed are methods, circuits, devices and associated executable code for facilitating transmission, reception and presentation (e.g. rendering) of video information/signals on a video display unit such as a flat-screen display, a touchscreen and/or a tablet computing platform. There may be provided a video display unit adapted to receive video signals through two or more video signal paths, wherein one of the signal paths (i.e. a first signal path) may be a wired signal path. Another signal path (i.e. a second signal path) may be a wireless signal path. The display unit may be matched or paired to a matched computing platform. The paired matched computing platform may send video signals to the display unit along the wired signal path, e.g. when the display unit is docked with the matched computing platform. The paired matched computing platform may send video signals to the display unit along the wireless signal path, e.g. when the display unit is disconnected from the matched computing platform.

SUCCESSIVE REFINEMENT VIDEO COMPRESSION

A method of transmitting compressed video data includes: encoding video data; generating coarse data and refinement data from the video data; packetizing the coarse data into a first packet; and successively packetizing the refinement data into a plurality of packets. Each successive packet of the plurality of packets includes a finer description of the refinement data relative to the previous packet. 1. A method of transmitting compressed video data , the method comprising:encoding video data;generating coarse data from said video data;generating refinement data from said video data;packetizing at least a portion of said coarse data into a first packet; andsuccessively packetizing at least a portion of said refinement data into a plurality of packets, wherein each successive packet of said plurality of packets comprises a finer description of the refinement data relative to the previous packet.2. The method of claim 1 , further comprising:transmitting said first packet and zero or more packets out of said plurality of packets within a time window having length of K milliseconds;retransmitting one or more packets which were previously transmitted out of said plurality of packets, provided that said retransmitting is performed during said time window;cancelling transmission of one or more of said first packet and said plurality of packets, which were not successfully transmitted within said time window.3. The method of claim 1 , wherein said video data comprises video content and any one of audio content and control data.4. The method of claim 1 , further comprising:transmitting a first packet and also said plurality of packets within a time window having length of K milliseconds.5. The method of claim 4 , comprising:cancelling transmission of one or more of said first packet and said plurality of packets, which were not successfully transmitted within said time window.6. A system for transmitting compressed video data claim 4 , the system comprising: encoding video ...

EFFICIENT COMPRESSION OF BAYER IMAGES

A method includes, in an encoder, dividing an image into blocks, and producing respective compressed descriptions of the blocks. First data, which contains at least some of the compressed descriptions, is generated such that a compressed description of each block within the first data is accessible irrespective of the compressed descriptions of the other blocks. Second data, which contains at least a portion of the compressed descriptions or of the blocks and has a better error resilience than the first data, is also generated. The first and second data are stored in a memory. At a decoder, the first and second data are read from the memory, and the image is reconstructed from the read first and second data. 1. A method , comprising:in an encoder, dividing an image into blocks, and producing respective compressed descriptions of the blocks;generating first data, which contains at least some of the compressed descriptions, such that a compressed description of each block within the first data is accessible irrespective of the compressed descriptions of the other blocks, and generating second data that contains at least a portion of the compressed descriptions or of the blocks and has a better error resilience than the first data;storing the first and second data in a memory; andat a decoder, reading the first and second data from the memory and reconstructing the image from the read first and second data.2. A method , comprising:in an encoder, receiving a color image whose pixels are divided into disjoint single-color sub-images in accordance with a predefined spatial pattern;dividing the image into blocks, and producing respective compressed descriptions of the blocks;generating first data, which contains at least some of the compressed descriptions, such that a compressed description of each block within the first data is accessible irrespective of the compressed descriptions of the other blocks, and generating second data that contains at least a portion of the ...

Method and apparatus for capacity increase and enhanced communications performance in CATV networks

In a cable television (CATV) data communication network, channel throughput and communications robustness are increased in a manner that improves speed of data transmission while maintaining compatibility with existing specifications and equipment. Enhanced throughput can be realized using the return channel of the CATV network. Alternatively, data retransmission and/or diversity techniques can be used to improve throughput.

PCM modems using communication lines with multiple digital-to-analog converters

The present invention discloses communications devices which improves communications of pulse code modulation modems which use communications lines with multiple digital-to-analog conversions. One embodiment of the present invention includes a plurality of codecs (312) which receive analog signals through multiple communications channels (310). Digital data streams generated by the codecs (312) from the analog signals is transmitted to an associated one of a plurality of digital signal processors (214). The digital signal processors (214) process the decoded data and then transfers the data to a digital modem (216) for further transmission.

Apparatus and Method for Applying Unequal Error Protection During Wireless Video Transmission

Wireless transmission of high-definition video, whether essentially uncompressed or compressed, is prone to errors during reception due to the condition of the wireless link. To ensure video quality during changing link conditions it is desirable to ensure that those portions of the video that represent the more important components of the video signal, such as the lower special frequencies or most significant bits, are assured correct reception at the receiver. Bandwidth limitations of the wireless link affect the amount of data that can be sent over the link. Hence, using a high level error recovery for all of the information is not feasible. Accordingly, a method and apparatus for unequal error protection is disclosed that provides a higher level of error protection to the more important elements of the transmission while affording less error protection to the other elements of the transmission.

Apparatus and Method for Uncompressed, Wireless Transmission of Video

An apparatus and method for wireless transmission of uncompressed HDTV video overcomes the challenges of sending vast amounts of information over a wireless link. This is achieved by direct mapping of transformation coefficients of the video components to communication symbols, such as OFDM symbols. A main portion of the important transform coefficients, for example the MSBs of the coefficients representing lower frequencies of each of the video components, and in particular the quantized values of the lower frequencies components, are sent in a coarse representation using, for example, QPSK or QAM. The coefficients representing higher frequencies of the video components, and the quantization error values of the lower frequencies components, or some, non-linear transformation thereof, are sent as pairs of real and imaginary portions of a complex number that comprises a point in a fine constellation. The invention further provides a delay-less and buffer-less implementation of transmitter ...

Channel monitoring for improved parameter selection in a communication system

A method is provided for automatically improving throughput of an active channel in a communication system comprising: receiving input from one or more modules that identify and characterize impairments in the active channel; monitoring the input to track changes in the impairments; and changing channel parameters to improve throughput on the channel based on the changes in the impairments. Other systems and methods are disclosed.

System, device, and method for robust video transmission utilizing User Datagram Protocol (UDP)

System, device, and method for transmitting a video via a User Datagram Protocol (UDP) over Internet Protocol (IP) communication link. A method includes: generating by a video encoder a set of N packets of compressed data per each frame of the video, wherein N is a natural number; and upon generation of each set of N packets for a specific frame of that video, immediately performing the transmitting of the set of N packets that corresponds to a single encoded video frame, via that UDP over IP communication link, without waiting for encoding or packetization of any other video frame of that video. Each packet of that video frame includes at least: a Coarse video data packet-portion, and a Fine video data packet-portion, and optionally also a Header packet-portion that includes sub-frames mapping information.

WIRELESS TRANSMISSION OF HIGH QUALITY VIDEO

A method of transmitting video images. The method includes providing a high definition video stream, compressing the video stream using an image domain compression method, in which each pixel is coded based on a vicinity of the pixel and transmitting the compressed video stream over a fading transmission channel. 1. A method of transmitting video images , comprising:providing a video image;compressing the video image into a coarse portion, which has, for at least one color component, a bounded difference from the provided image, for a predetermined set of the pixels of the image;representing the difference between the coarse portion and the video image by a refinement portion;mapping the coarse portion and at least part of the refinement portion into symbols of a constellation; andtransmitting the mapped symbols to a receiver.2. A method according to claim 1 , wherein compressing the video image comprises compressing such that the difference between the coarse portion and the provided image is bounded for substantially all the pixels of the image.3. A method according to claim 1 , wherein compressing the video image comprises compressing such that the difference between the coarse portion and the provided image is bounded to have at most ten different possible values.4. A method according to claim 1 , wherein compressing the video image comprises compressing such that the difference between the coarse portion and the provided image is bounded to have at most five different possible values.5. A method according to claim 1 , wherein the difference between the coarse portion and the provided image is bounded by a maximal value which is less than 5% of the possible values of the provided images.6. A method according to claim 1 , wherein compressing the video image comprises compressing such that the difference between the coarse portion and the provided image is bounded for substantially all the color components representing the image.7. A method according to claim 1 , ...

System, Device, and Method of Interframe Prediction

Systems, devices, and methods of performing inter-frame prediction in video compression. A method includes: partitioning a video frame into superblocks, each superblock includes a plurality of macroblocks; determining an upper boundary on attributes that are associated with residual blocks of the plurality of macroblocks, based on pre-defined constraints on the total number of bits allocated for motion vector descriptions in a superblock; for each macroblock in a superblock, determining a partition size and a motion vector resolution which yield, for all macroblocks in the superblock, a motion vector description and a corresponding residual with attributes less than or equal to the upper boundary.

ANALOG SIGNAL TRANSMISSION WITH MULTIPLE ANTENNAS

A method for analog transmission of video from a transmitter using multiple transmit antennas includes transmitting analog video signals through at least two antennas to a receiver, monitoring at the receiver an attribute of the channels between the transmit antennas and an antenna of the receiver, and changing a phase and magnitude of an analog video signal being transmitted through at least one of the at least two antennas responsive to the monitoring. Additionally, a method for analog transmission of video signals using multiple transmit antennas includes space-time coding. 1. A method for analog transmission of video from a transmitter using multiple transmit antennas , the method comprising:transmitting analog video signals through at least two antennas to a receiver;monitoring at the receiver an attribute of the channels between the transmit antennas and an antenna of the receiver; andchanging a phase and magnitude of an analog video signal being transmitted through at least one of said at least two antennas responsive to said monitoring.2. The method according to claim 1 ,wherein said changing a phase and magnitude comprises:multiplying said analog video signal being transmitted through at least one of said at least two antennas by a complex number.3. A The method according to claim 2 , comprising:multiplying a baseband signal of said analog video signal by a factor of −1 or 1.4. A The method according to claim 1 , further comprising:transmitting digital signals through said at least two antennas of said multiple transmit antennas.5. The method according to claim 4 ,wherein said attribute comprises a signal to noise ratio (SNR) associated with reconstructed analog signals and reconstructed digital signals.6. The method according to claim 4 ,wherein said changing occurs when said SNR of a reconstructed digital video signal is greater than that of a reconstructed analog video signal.7. The method according to claim 4 ,wherein said digital video signals are ...

WIRELESS VIDEO TRANSMISSION

A system for wireless video transmission includes a video compression unit to generate a description of DCT taps, a linear mapper to generate transmission payload from the DCT taps, and a wireless transmitter to map the transmission payload into constellation points, wherein the real part and the imaginary part of each of the constellation points is a monotonic function of some of the DCT taps. 1. A system for wireless video transmission comprising:a video compression unit to generate a description of Discrete Cosine Transform (DCT) taps;a linear mapper to generate transmission payload from said DCT taps; anda wireless transmitter to map said transmission payload into constellation points, wherein the real part and the imaginary part of each of said constellation points is a monotonic function of some of said DCT taps.2. The system according to claim 1 ,wherein said linear mapper comprises a decoder.3. The system according to claim 1 ,wherein said linear mapper comprises a compander.4. The system according to claim 1 ,wherein said linear mapper comprises a Hadamard encoder.5. The system according to claim 1 ,wherein said linear mapper comprises a video-content-dependent scaler.6. The system according to claim 1 ,wherein said linear mapper comprises a quantizer.7. The system according to claim 1 ,wherein said linear mapper comprises a DCT taps scaler.8. The system according to claim 1 ,wherein said linear mapper comprises a demapper.9. The system according to claim 1 ,wherein said linear mapper comprises a scrambler.10. The system according to claim 1 ,further comprising an End-of-Block (EOB) message creator.11. The system according to claim 1 ,further comprising a scaling message creator.12. The system according to claim 1 ,further comprising a high robustness bit organizer.13. The system according to claim 1 ,wherein said video compression unit comprises a low latency encoder.14. The system according to claim 1 ,wherein said wireless transmitter comprises a ...

Method, device and system of error-protection of a wireless video transmission

Some demonstrative embodiments of the invention include devices, systems and/or methods of error-protection of a wireless video transmission. Some demonstrative embodiments of the invention include a wireless transmitter to transmit a wireless transmission including a data stream corresponding to at least a video signal. The data stream may include a plurality of data components, which are protected according to an unequal error protection scheme. At least first and second data components of the plurality of data components may be protected by first and second error protection mechanisms, respectively. Other embodiments are described and claimed.

Apparatus and Method for Applying Unequal Error Protection During Wireless Video Transmission

Wireless transmission of high-definition video, whether essentially uncompressed or compressed, is prone to errors during reception due to the condition of the wireless link. To ensure video quality during changing link conditions it is desirable to ensure that those portions of the video that represent the more important components of the video signal, such as the lower special frequencies or most significant bits, are assured correct reception at the receiver. Bandwidth limitations of the wireless link affect the amount of data that can be sent over the link. Hence, using a high level error recovery for all of the information is not feasible. Accordingly, a method and apparatus for unequal error protection is disclosed that provides a higher level of error protection to the more important elements of the transmission while affording less error protection to the other elements of the transmission.

Noise identification in a communication system

A method is provided to automatically identify noise events in a channel of a communication system comprising the steps of: receiving an input signal from the channel; determining the mean energy of the input signal; determining the recent energy of the input signal; identifying a beginning of the noise event when the recent energy is greater than the product of the mean energy and a predefined first threshold; identifying an end of a noise event when the recent energy is less that the product of the mean energy and a predefined second threshold; and providing for output the beginning of the noise event and the end of the noise event. Other systems and methods are disclosed.

Joint Source Channel Coding with H.265 Video Compression

A wireless video transmission system includes: a coarse compression module to compress a video frame and to generate coarse data of the video frame; a coarse decompression module to generate coarse frame information from the coarse data; a distortions extractor to generate coarse distortions from the coarse frame and from the video frame; a refinement data encoder to generate refinement data from coarse distortions based on the coarse frame information; and a data combining and modulation module to combine and transmit the coarse data and the refinement data.

System for monitoring respiratory conditions and method thereof

There is provided a method and system of monitoring a respiratory condition of a subject, the method including obtaining input data indicative of an alternating signal representative of change of length of at least part of a contour along a subject's chest wall and/or abdominal wall during one or more breathing cycles, the input data generated by periodically measuring the change of length during the breathing cycles; analyzing the input data to detect an irregular breathing pattern, the irregular breathing pattern represented by at least one local change in the form of the alternating signal during an expiratory phase of at least one of the one or more breathing cycles; and determining a respiratory condition of the subject based on a result of the detection.

Analog signal transmission with multiple antennas

A method for analog transmission of video from a transmitter using multiple transmit antennas includes transmitting analog video signals through at least two antennas to a receiver, monitoring at the receiver an attribute of the channels between the transmit antennas and an antenna of the receiver, and changing a phase and magnitude of an analog video signal being transmitted through at least one of the at least two antennas responsive to the monitoring. Additionally, a method for analog transmission of video signals using multiple transmit antennas includes space-time coding.

Method and apparatus for capacity increase and enhanced communications performance in CATV networks

In a cable television (CATV) data communication network, channel throughput and communications robustness are increased in a manner that improves speed of data transmission while maintaining compatibility with existing specifications and equipment. Enhanced throughput can be realized using the return channel of the CATV network. Alternatively, data retransmission and/or diversity techniques can be used to improve throughput.

Wireless transmission of high quality video

A method of transmitting video images (114). The method includes providing a high definition video stream, compressing the video stream using an image domain compression method, in which each pixel is coded based on a vicinity of the pixel and transmitting the compressed video stream over a fading transmission channel (110).

System, device, and method of interframe prediction

Systems, devices, and methods of performing inter-frame prediction in video compression. A method includes: partitioning a video frame into superblocks, each superblock includes a plurality of macroblocks; determining an upper boundary on attributes that are associated with residual blocks of the plurality of macroblocks, based on pre-defined constraints on the total number of bits allocated for motion vector descriptions in a superblock; for each macroblock in a superblock, determining a partition size and a motion vector resolution which yield, for all macroblocks in the superblock, a motion vector description and a corresponding residual with attributes less than or equal to the upper boundary.

System, device, and method of video encoding and video transmission using improved estimation of available bandwidth

System, device, and method of video encoding and video transmission using improved estimation of available bandwidth. A transmitting device is configured to transmit video data to a recipient device over a communication network having a non-fixed bandwidth. A configurable video encoder encodes a source video into an encoded video. An Available Bandwidth Estimator operates at the recipient device, to estimate a currently-available bandwidth of the communication channel. Two different bandwidth estimation methods are used at the recipient device, and one of two estimated values is then selected based on pre-defined selection rules. Video encoding parameters that are used by the configurable video encoder of the transmitting device are dynamically modified based on the most-recent estimate of the currently-available bandwidth of the communication channel. Optionally, pre-transmission packets are sorted at the transmitting device, based on packet size, to improve accuracy of bandwidth estimation.

System, device, and method for robust video transmission utilizing user datagram protocol (udp)

System, device, and method for transmitting a video via a User Datagram Protocol (UDP) over Internet Protocol (IP) communication link. A method includes: generating by a video encoder a set of N packets of compressed data per each frame of the video, wherein N is a natural number; and upon generation of each set of N packets for a specific frame of that video, immediately performing the transmitting of the set of N packets that corresponds to a single encoded video frame, via that UDP over IP communication link, without waiting for encoding or packetization of any other video frame of that video. Each packet of that video frame includes at least: a Coarse video data packet-portion, and a Fine video data packet-portion, and optionally also a Header packet-portion that includes sub-frames mapping information.

Method and apparatus for using the video blanking period for the maintenance of a modem that is used for wireless transmission of video

The vertical blanking period is an idle period in video transmission that was originally intended for allowing the trace back of an electron beam to its point of origin. When sending the video signal over a wireless channel, the wireless channel may remain free of transmission of data during this period. However, in wireless transmission of a video signal in general, and in the transmission of an essentially uncompressed video signal in particular, there is a need to use all the bandwidth available, especially when transmitting a high-definition video signal. Therefore, a method is taught for using the vertical blanking period of a video signal for modem maintenance.

System, device, and method for robust video transmission utilizing user datagram protocol (udp)

Method and apparatus for using the video blanking period for the maintenance of a modem that is used for wireless transmission of video

The vertical blanking period is an idle period in video transmission that was originally intended for allowing the trace back of an electron beam to its point of origin. When sending the video signal over a wireless channel, the wireless channel may remain free of transmission of data during this period. However, in wireless transmission of a video signal in general, and in the transmission of an essentially uncompressed video signal in particular, there is a need to use all the bandwidth available, especially when transmitting a high-definition video signal. Therefore, a method is taught for using the vertical blanking period of a video signal for modem maintenance.

Apparatus and method for uncompressed, wireless transmission of video

An apparatus and method for wireless transmission of uncompressed HDTV video overcomes the challenges of sending vast amounts of information over a wireless link. This is achieved by direct mapping of transformation coefficients of the video components to communication symbols, such as OFDM symbols. A main portion of the important transform coefficients, for example the MSBs of the coefficients representing lower frequencies of each of the video components, and in particular the quantized values of the lower frequencies components, are sent in a coarse representation using, for example, QPSK or QAM. The coefficients representing higher frequencies of the video components, and the quantization error values of the lower frequencies components, or some, non-linear transformation thereof, are sent as pairs of real and imaginary portions of a complex number that comprises a point in a fine constellation. The invention further provides a delay-less and buffer-less implementation of transmitter and receiver pairs.

Method and apparatus for capacity increase and enhanced communications performance in catv networks

In a cable television (CATV) data communication network, channel throughput and communications robustness are increased in a manner that improves speed of data transmission while maintaining compatibility with existing specifications and equipment. Enhanced throughput can be realized using the return channel of the CATV network. Alternatively, data retransmission and/or diversity techniques can be used to improve throughput.

Method and apparatus for capacity increase and enhanced communications performance in catv networks

In a cable television (CATV) data communication network, channel throughput and communications robustness are increased in a manner that improves speed of data transmission while maintaining compatibility with existing specifications and equipment. Enhanced throughput can be realized using the return channel of the CATV network. Alternatively, data retransmission and/or diversity techniques can be used to improve throughput.

Method and apparatus for capacity increase and enhanced communications performance in catv networks

In a cable television (CATV) data communication network, channel throughput and communications robustness are increased in a manner that improves speed of data transmission while maintaining compatibility with existing specifications and equipment. Enhanced throughput can be realized using the return channel of the CATV network. Alternatively, data retransmission and/or diversity techniques can be used to improve throughput.