Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Some demonstrative embodiments include devices, systems and/or methods of wireless video communication. Some embodiments include a wireless video receiver to receive a wireless video transmission including data representing pixels of a video frame and a synchronization signal indicative of a beginning of the video frame, the wireless receiver including a clock generator to generate a pixel clock signal synchronized to the synchronization signal, wherein a clock rate of the pixel clock signal corresponds to a pixel rate of the pixels. Other embodiments are described and claimed.

Abstract: A transmitter transmits an essentially uncompressed HDTV video by direct mapping of transformation coefficients of Y—Cr—Cb video components to communication symbols. A main portion of the important transform coefficients is sent in a coarse representation using, for example, QPSK or QAM. The coefficients representing the higher frequency of each of Y—Cr—Cb, as well as the quantization error values of the DC and near DC components, are sent as pairs of real and imaginary portions of a complex number that comprise a symbol. In the transmitter, a history containing certain information of some of the coefficients is maintained for the immediately preceding frame, and if a match is found, instead of repeating sending of these coefficients, additional high-frequency coefficients are sent. In the receiver, a history buffer containing certain information of some of the coefficients is maintained, and upon detection of an error the content of the buffer is used instead.

Abstract: 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.

Abstract: 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.

Abstract: Some demonstrative embodiments include devices, systems and/or methods of wireless video communication. Some embodiments include a wireless video receiver to receive a wireless video transmission including data representing pixels of a video frame and a synchronization signal indicative of a beginning of the video frame, the wireless receiver including a clock generator to generate a pixel clock signal synchronized to the synchronization signal, wherein a clock rate of the pixel clock signal corresponds to a pixel rate of the pixels. Other embodiments are described and claimed.

Abstract: 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.

Abstract: An apparatus for receiving essentially uncompressed HDTV video must generate an accurate pixel-rate clock to enable the reconstruction of a video frame. The clock pixel-rate generated must match a received video pixel-rate. In such system, signals for generation of horizontal and vertical synchronization are not transmitted over the wireless link to conserve the use of bandwidth. In the invention, a start of frame (SOF) indication is extracted by a symbol detection and synchronization (SDS) module and is used to generate the pixel-rate clock.

Abstract: An apparatus for receiving essentially uncompressed HDTV video must generate an accurate pixel-rate clock to enable the reconstruction of a video frame. The clock pixel-rate generated must match a received video pixel-rate. In such system, signals for generation of horizontal and vertical synchronization are not transmitted over the wireless link to conserve the use of bandwidth. In the invention, a start of frame (SOF) indication is extracted by a symbol detection and synchronization (SDS) module and is used to generate the pixel-rate clock.

Abstract: 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.

Abstract: 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.

Abstract: Tasks are dynamically allocated to process packets. In particular, packets of data to be processed are assigned a packet identification. The packet identification includes a lane and a packet sequence number. The term “lane” as used herein refers to a port number and a direction (i.e. ingress or egress), such as Port 3 Egress. A set of resources (e.g., registers and memory buffers) are associated with each lane. The task is allowed to access resources associated with the lane. In some embodiments, a task may change the port that it services and use the resources associated with that port.

Abstract: 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.

Abstract: 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.

Abstract: A transmitter transmits an essentially uncompressed HDTV video by direct mapping of transformation coefficients of Y—Cr—Cb video components to communication symbols. A main portion of the important transform coefficients is sent in a coarse representation using, for example, QPSK or QAM. The coefficients representing the higher frequency of each of Y—Cr—Cb, as well as the quantization error values of the DC and near DC components, are sent as pairs of real and imaginary portions of a complex number that comprise a symbol. In the transmitter, a history containing certain information of some of the coefficients is maintained for the immediately preceding frame, and if a match is found, instead of repeating sending of these coefficients, additional high-frequency coefficients are sent. In the receiver, a history buffer containing certain information of some of the coefficients is maintained, and upon detection of an error the content of the buffer is used instead.

Abstract: Tasks are assigned to process packets, but the tasks may not process the packets in the order in which the packets were received. Thus, the order of the packets may be lost during processing. The packets, however, should still be transferred in the order in which the packets were received. Therefore, reordering is performed. In particular, the reordering is performed by having tasks write commands for packets into command buffers of a command queue based on a packet sequence number of a packet matching a current sequence number associated with the buffer and by reading commands for consecutive packets in order by passing from one command buffer to another command buffer. With the command buffers in the command queue being written and read in this manner, the packets are “reordered” so that they are transferred in the order in which they were received.

Abstract: 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.