Lattice Semiconductor Corporation

Glenn L Marks

Graeme Peter Jones

Conrad Arlo Maxwell

Lance Chapin Davies

Jonathan Regalado-Hawkey

Christian Rudel

Graeme P Jones

Lance Davies

Transmitting a bidirectional, virtual differential signal in addition to other differential signals over physical communication channels. Thus, four signal lines can provide three differential signals, where the virtual differential signal is bidirectional. The virtual differential signal can be provided over one or more of the other physical communication channels. Additional configurations allow for providing a bidirectional DC power supply. Additional configurations allow for providing DC power in addition to data over a reduced number of lines. Selective switching of signal lines can allow backward and forward interoperability with other standard interfaces.

Transmitting multiple differential signals over a reduced number of physical  channels

Techniques and mechanisms for determining an operation mode of an audio-video (AV) device. In an embodiment, communication logic of the AV device may be configured at different times for different ones of a plurality of operation modes including an AV source operation mode for providing AV information to another device and an AV sink operation mode for receiving AV information from another device. In response to a detected event, control logic initializes the communication logic of the AV device into a default mode which prevents operation of the communication logic as an AV source.

Method, apparatus and system for transitioning an audio/video device between a source mode and a sink mode

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Corona, CA, United States of America

Glenn L Marks