Amimon Ltd.

Shay Freundlich

Meir Feder

Nathan Elnathan

Zvi Reznic

Yoav Amit

Netanel Goldberg

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.

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.

Disclosed is a method, circuit, device and system for conveying media device control signaling over a radio frequency link. A first control signal generated by a first media device may be conveyed to a second media device over a radio frequency data link, where the data link is formed through a first transceiver connected to the first media device and a second transceiver connected to the second media device. According to further embodiments of the present invention, the first transceiver, or circuits functionally associated with the transceiver, may emulate a receipt of media control signal acknowledgement of the second media device and may provide the acknowledgement to the first media device. According to yet further embodiments of the present invention, the second transceiver, or circuits functionally associated with the transceiver, may receive, reconstruct and forward the first control signal to the second media device. Upon the second transceiver receiving an acknowledgment of receipt of the first control from the second media device, the second transceiver may drop the acknowledgement.

Method circuit device and system for conveying control signaling between media devices

Some demonstrative embodiments include devices, systems and/or methods of registering wireless video communication modules. A method of registering wireless video modules may include, for example, transmitting a first registration message from a first wireless video communication module to a second wireless video communication module, wherein the first registration message includes first information identifying the first module to the second wireless video communication module; receiving at the first module a second registration message from the second wireless video communication module, wherein the second registration message includes second information identifying the second module to the first wireless video communication module; and based on the first and second registration messages, registering the first video communication module at the second wireless video communication module and the second video communication module at the first wireless video communication module. Other embodiments are described and claimed.

Device, method and system of registering wireless communication modules

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

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.

Method, device and system of generating a clock signal corresponding to a 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 applying unequal error protection during wireless video transmission

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.

OFDM modem for transmission of continuous complex numbers

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.

Growing community of inventors

Givat Ada, Israel

Shay Freundlich