Abstract: Methods and devices for enabling a chain of displays to communicate with HDMI-CEC sources using HDMI-CEC. Also disclosed is a display device supporting picture-in-picture through two HDMI-CEC input ports, where each port communicates using HDMI-CEC with an HDMI-CEC source.

Abstract: Method and devices for discovering, maintaining and updating network views of a multi display network supporting CEC. Some embodiments include determining CEC logical addresses of HDMI-CEC devices coupled to HDMI-CEC ports using selective CEC message generation and handling. Other embodiments eliminate an HDMI-CEC device from selected cluster trees upon identifying TMDS communication.

Abstract: Communication link including a cable containing four pairs of wires, three transmitters to transmit uncompressed video data and audio data over three of the pairs of wires to three receivers, and two transceivers to form a bidirectional multi data type communication link over the fourth pair of wires. An active mode of operation for transmitting the uncompressed video data and the audio data over the three pairs of wires, and for transmitting bidirectional data over the fourth pair of wires. And a first low power partial functionality mode of operation for transmitting bidirectional system controls.

Abstract: Methods for operating a multi data type communication link transceiver, including: testing the type of the link partner transceiver. If the link partner transceiver is not a multi data type communication link transceiver, operating the multi data type communication link according to the detected type of the link partner transceiver. If the link partner transceiver is a multi data type communication link transceiver, further including the steps of negotiating the functionality required from the multi data type communication link with the link partner, and switching to an appropriate mode of operation.

Abstract: Methods for CEC logical address assignments and HDMI physical address assignments. Some embodiments determine a required HDMI physical address to be assigned to an upstream HDMI-CEC device and provide the required HDMI physical address. Other embodiments assign consistent CEC logical addresses to a plurality of HDMI-CEC display devices in different HDMI-CEC network views.

Abstract: A communication link comprising: a first transceiver configured to transmit a first set of packets at a predetermined rate with a first error resistance level, store the transmitted data in a buffer, receive a retransmission request, and retransmit the relevant data using one or more packets encoded with a second error resistance level that is higher than the first error resistance level. And a second transceiver configured to receive the first set of packets, detect an erroneous packet, request retransmission of the erroneous packet, and forward the data received in the packets according to its original order approximately after a fixed delay.

Abstract: Methods and devices for emulating HDMI-CEC devices, sub networks, or messages, including selecting the properties of an HDMI-CEC device to be emulated from at least two devices representing different functionalities, and initiating spoofed CEC messages.

Abstract: Method and devices for discovering, maintaining and updating network views of a multi display network supporting CEC. Some embodiments include determining CEC logical addresses of HDMI-CEC devices coupled to HDMI-CEC ports using selective CEC message generation and handling. Other embodiments eliminate an HDMI-CEC device from selected cluster trees upon identifying TMDS communication.

Abstract: Methods and devices for enabling a chain of displays to communicate with HDMI-CEC sources using HDMI-CEC. Also disclosed is a display device supporting picture-in-picture through two HDMI-CEC input ports, where each port communicates using HDMI-CEC with an HDMI-CEC source.

Abstract: Methods for CEC logical address assignments and HDMI physical address assignments. Some embodiments determine a required HDMI physical address to be assigned to an upstream HDMI-CEC device and provide the required HDMI physical address. Other embodiments assign consistent CEC logical addresses to a plurality of HDMI-CEC display devices in different HDMI-CEC network views.

Abstract: Method and devices for operating a network including at least two HDMI-CEC display devices using HDMI-CEC. Some embodiments include creating and displaying a control menu which includes the HDMI-CEC display devices. Other embodiments include creating a unique control menu for each of the HDMI-CEC display devices.

Abstract: A CEC block termination function, operated by a manipulating switch including at least one HDMI-CEC input port and at least two HDMI-CEC output ports, enables the manipulating switch to receive a CEC block which was initiated by a device, optionally acknowledge (ACK) the block, modify the received block, and supply the modified block to one or more devices. Optionally, a section of the CEC block may be modified, the entire CEC block may be modified, or the CEC message may be partially or completely modified.

Abstract: A CEC propagation control function, operated by a manipulating switch including at least one HDMI-CEC input port and at least two HDMI-CEC output ports, enables the manipulating switch to receive a CEC block which was initiated by a certain device, and pass or intercept the received CEC block to one or more devices, optionally on the fly, and without modifying the received block.

Abstract: A CEC on the fly modification function, operated by a manipulating switch including at least one HDMI-CEC input port and at least two HDMI-CEC output ports, enables the manipulating switch to receive a CEC block which was initiated by a certain device, modify one or more bits in the received CEC block, optionally on the fly, and supply the modified CEC block to one or more devices.

Abstract: Methods and devices for manipulating HDMI-CEC messages transmitted over a network including at least two HDMI-CEC display devices with their associated at least two HDMI-CEC cluster trees that at least partially overlap, and enabling each of the HDMI-CEC display devices to communicate using HDMI-CEC with its associated HDMI-CEC cluster tree according to its current HDMI-CEC network view.

Abstract: A method of transmitting a data stream over a communication channel, the method comprising: providing symbol sets having different numbers of symbols; modulating data in the data stream that warrant different degrees of protection against noise onto symbols from symbol sets having different numbers of symbols, wherein which symbol set given data in the stream is modulated onto is independent of symbol sets onto which other data in the data stream is modulated onto; and transmitting the symbols.

Abstract: A method of transmitting a data stream over a communication channel, the method comprising: providing symbol sets having different numbers of symbols; modulating data in the data stream that warrant different degrees of protection against noise onto symbols from symbol sets having different numbers of symbols, wherein which symbol set given data in the stream is modulated onto is independent of symbol sets onto which other data in the data stream is modulated onto; and transmitting the symbols.

Abstract: A method of transmitting a data stream over a communication channel, the method comprising: providing symbol sets having different numbers of symbols; modulating data in the data stream that warrant different degrees of protection against noise onto symbols from symbol sets having different numbers of symbols, wherein which symbol set given data in the stream is modulated onto is independent of symbol sets onto which other data in the data stream is modulated onto; and transmitting the symbols.

Abstract: A method of transmitting a data stream over a communication channel, the method comprising: providing symbol sets having different numbers of symbols; modulating data in the data stream that warrant different degrees of protection against noise onto symbols from symbol sets having different numbers of symbols, wherein which symbol set given data in the stream is modulated onto is independent of symbol sets onto which other data in the data stream is modulated onto; and transmitting the symbols.

Abstract: A method of transmitting a data stream over a communication channel, the method comprising: providing symbol sets having different numbers of symbols; modulating data in the data stream that warrant different degrees of protection against noise onto symbols from symbol sets having different numbers of symbols, wherein which symbol set given data in the stream is modulated onto is independent of symbol sets onto which other data in the data stream is modulated onto; and transmitting the symbols.