Abstract: A wired communication link to carry to one side a first transmission of unidirectional time sensitive application data, having a throughput of at least 1.1 Gbps, multiplexed with a first direction of a bidirectional data channel, and to carry to the other side a second transmission of a second direction of the bidirectional data channel. The first and the second transmissions are transmitted over at least one common wire, the frequency bands of the first and the second transmissions at least partially overlap, and the communication link guarantees correct reception order. As a result, the receiver that receives the multiplexed transmission can utilize a relatively small buffer that is enough to compensate for timing distortions and is not enough to rearrange the unidirectional time sensitive application data.

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: Receivers configured to handle dynamically modulated symbols. One receiver includes a slicer, a physical coding sublayer (PCS), and a decision based filter (DBF). Each of most of the received frames comprising (i) modulation information modulated according to a predetermined modulation order, and (ii) symbols of at least two different modulation orders that are dynamically modulated in accordance with the modulation information. The slicer configured to feed the PCS with essentially the minimal combination of slicing results that essentially covers all the predetermined modulation order. And the PCS configured to identify the modulation information, to use the identified modulation information to determine the modulation of the dynamically modulated symbols, and to provide the slicer with an indication of which slicer function output to use to feed the DBF.

Abstract: Receivers designed to reduce decision based filter error propagation by feedback from PCS to slicer. One embodiment includes a slicer, a physical coding sublayer (PCS), and a decision based filter (DBF). The frames include symbols of at least two different modulation orders. The slicer has slicing functions suitable for the different modulations and feeds the PCS with the slicing results. The PCS identifies frame boundaries and modulation information, which are modulated according to a predetermined modulation order, uses the identified modulation information to determine the modulation of a nonempty set of dynamically modulated symbols in each frame, and provides the slicer with an indication of which slicer function output to use to feed the DBF.

Abstract: Reducing decision based filter error propagation by feedback from a physical coding sublayer (PCS) to a slicer. One method includes: receiving a frame comprising symbols of at least two different modulation orders that use subsets of a symbol superset; slicing the received symbols according to the highest modulation order by a slicer having slicing functions suitable for the different modulations; identifying frame boundaries and modulation information, which are modulated according to a predetermined modulation order; using the identified modulation information for determining the modulation of a nonempty set of dynamically modulated symbols in the received frame; and providing the slicer with an indication of which slicer function output to use for feeding a decision based filter.

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 configurable analog equalizer is set to a first high-pass frequency response that is intentionally too moderate to compensate for a low-pass frequency response of a physical link coupling a transmitter and a receiver. A Feed Forward Equalizer (FFE) is activated at the receiver; the FFE includes a set of coefficients having a minimum configuration of a cursor coefficient and a first pre-cursor coefficient. A Decision Feedback Equalizer (DFE) is activated at the receiver; the DFE includes a set of coefficients having a minimum configuration of a first post-cursor coefficient. The configurable analog equalizer is then set to a high-pass frequency response that is more intense than the first high-pass frequency response, until the first post-cursor coefficient of the DFE substantially equals an absolute value of a quotient obtained by dividing the first pre-cursor coefficient of the FFE by the cursor coefficient of the FFE.

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: Assuring acquisition of symbol timing in a full-duplex data transceiver under inter-symbol interference conditions. One embodiment includes a transmitter comprising a first local clock having a first free running frequency, and a receiver comprising a second local clock having a second frequency initially set to a value higher than the first free running frequency. A first type decision-directed timing recovery mechanism is intentionally limited to only decreasing the frequency of the second local clock. A second type decision-directed timing recovery mechanism is not limited to only decreasing the frequency. The receiver receives symbols, decrease the frequency of the second local clock to a third frequency value using the first type decision-directed timing recovery mechanism, disables the first type mechanism after reaching the third frequency, and then phase-lock the second local clock to the optimal phase under MMSE criteria using the second type decision-directed timing recovery mechanism.

Abstract: A transmitter transmits to a receiver a training sequence having symbols belonging to a single modulation scheme. At least 90% of symbols have low symbol amplitude, and at most 10% of the symbols have high symbol amplitude. A first symbol estimator estimates the symbols using substantially only the sign of the received symbols, and substantially disregarding symbol amplitudes. A timing recovery mechanism estimates the received symbols in order to continuously reduce a frequency drift between the receiver and the transmitter. The first symbol estimator is switched off and a second symbol estimator is switched on according to a certain criterion. The second symbol estimator estimates symbols belonging to the training sequence. Each of the symbols is estimated to either the low symbol amplitude or the high symbol amplitude. An equalizer uses the symbols estimated by the second symbol estimator to converge, achieve signal equalization, and eliminate inter-symbol interference.

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: 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 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 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.