Abstract: A communication link includes a first device coupled to a second device over a set of wires. The first device includes a first input channel to receive synchronous data, a second input channel to receive asynchronous data, and logic to multiplex the synchronous and asynchronous data. The first device transmits synchronously the multiplexed result over a first frequency band, and receives, in full duplex over a second overlapping frequency band, asynchronous data transferred over at least a subset of the set of wires. And the second device does not discard all predefined packets upon receiving an error indication.

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: Methods and systems for operating a packet switch that communicates packets with error indication, including the steps of: receiving a packet comprising an error detection field; utilizing the error detection field to identify an error in the packet; marking the occurrence of the error in an error propagation field in the packet; updating the value of the error detection field; and forwarding the modified packet, with the updated value of the error detection field and the error propagation field, according to information carried in the packet.

Abstract: Method and device for using or dropping erroneous packets, including the steps of: receiving, by a network adaptor, first and second packets having headers, payloads, error propagation fields, and error detection fields. The error propagation fields indicate reception errors while the error detection fields do not indicate reception errors. Determining that the first packet is addressed to a first application and dropping the first packet. And determining that the second packet is addressed to a second application and enabling an end-device coupled to the adaptor to use the erroneous data stored in the second payload.

Abstract: A communication device configured to transmit and receive simultaneously, over the same wire, unidirectional high definition video and bidirectional data. The communication device includes a hybrid circuit coupled to a cable made of wires, and a transceiver. The transceiver is configured to transmit, over one of the cable's wires, Transition Minimized Differential Signaling (TMDS) data and source-to-sink direction of bidirectional data. The transceiver is further configured to receive the opposite direction of the bidirectional data over the same wire and simultaneously with the transmitting.

Abstract: A transceiver and a corresponding wired communication link. The transceiver is coupled to at least one conductive wire, receives a first packet-based transmission comprising lossless high definition digital video multiplexed with first data, and transmits a second transmission comprising second data. The second transmission is transmitted over at least one of the conductive wires utilized by the first transmission, and the transceiver does not discard all packets having an error indication.

Abstract: Method and device for a wired communication link that includes a first transceiver that sends over a set of wires a downstream multiplexed transmission that includes a first direction of a bidirectional data channel and lossless high definition digital video. The first transceiver is able to receive, over at least a subset of the set of wires utilized for the downstream multiplexed transmission, an upstream transmission comprising a second direction of the bidirectional data channel.

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: Method and device for a wired communication link that includes a first transceiver that sends over a set of wires a downstream multiplexed transmission that includes a first direction of a bidirectional data channel and lossless high definition digital video. The first transceiver is able to receive, over at least a subset of the set of wires utilized for the downstream multiplexed transmission, an upstream transmission comprising a second direction of the bidirectional data channel.

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: Methods and devices for a low power partial functionality communication link having an Ethernet mode of operation and a low power partial functionality mode of operation. The communication link may process only frames containing predefined data types while in the low power partial functionality mode.

Abstract: A daisy chain device including a first active mode of operation and a second low power mode of operation. In the first active mode of operation the daisy chain device supplies or receives multimedia data containing at least two types of data. In the second low power mode of operation the daisy chain device relays only predefined data types and consumes less power. Wherein the daisy chain connection includes wires and the transmissions in the different modes of operation are over the same wires.

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: 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. One of the methods includes selecting an initiator CEC logical address to emulate, and initiating a CEC message comprising the selected CEC logical address that is not unregistered logical address and does not represent a functionality of the device that actually initiated the CEC message.

Abstract: A packet based switched multimedia network which consolidates networking of high throughput, time sensitive data, and control streams, with Ethernet data networking over home span. The multimedia network may support in parallel, over the same home span cabling infrastructure, high quality networking including time sensitive data streams, such as HDMI, USB, and Ethernet, transparent network attachment for legacy devices, multi stream, and low power modes.

Abstract: Power saving techniques for a device including an active mode of operation for transmitting a first data stream of at least two data types over wires, and a low power partial functionality mode of operation for transmitting a second data stream over a subset of the wires used for transmitting the first data stream. The power saving techniques may utilize different modulation schemes, different throughputs, different symbol rates, or other techniques.

Abstract: A wired communication port comprising a transmitter operative to transmit, over a set of wires, a first transmission comprising a digital video clock multiplexed with a first direction of a bidirectional data channel. The transmitter is further operative to transmit video pixel data and video synchronization data over the same set of wires. And a receiver operative to receive a second transmission comprising a second direction of the bidirectional data channel, over at least a subset of the set of wires utilized for the first transmission.

Abstract: A CEC propagation control function, operated by a manipulating switch coupled to a first, second, and third HDMI-CEC devices, enables the manipulating switch to receive a CEC block from the first HDMI-CEC device, pass the received CEC block to the second HDMI-CEC device, and prevent the third HDMI-CEC device from receiving the CEC block, although the manipulating switch is coupled to the third HDMI-CEC device. The manipulating switch may also be implemented as a network.

Abstract: A CEC on the fly modification function, operated by a manipulating switch including at least three HDMI-CEC ports, enables the manipulating switch to receive a CEC block comprising a CEC address according to the initiator's HDMI-CEC network; modify on the fly the CEC address in the received CEC block to match the follower's HDMI-CEC network view; and supply the modified CEC block to one or more devices.