Communication system, transmitter, receiver, communication method, program, and communication cable

摘要

The present invention relates to a communication system, a transmitter, a receiver, a communication method, a program, and a communication cable for providing high-speed bidirectional communication while maintaining compatibility. When an HDMI (R) source performs bidirectional IP communication with an HDMI (R) sink using a CEC line and a signal line, a switching control unit controls a switch so that, when data is transmitted, the switch selects a constituent signal forming a differential signal output from a converting unit and, when data is transmitted, the switch selects a constituent signal forming a differential signal output from a receiver. When bidirectional communication is performed using only the CEC line, the switching control unit controls the switch so that the CEC signal output from the HDMI (R) source or the receiver is selected. The present invention is applicable to, for example, HDMI (R).

主权项

1. A reproducing apparatus for unidirectionally transmitting, to a receiver using a first differential signal, pixel data of an uncompressed image of one screen during an effective video period representing a period from one vertical synchronization signal to the next vertical synchronization signal excluding horizontal blanking intervals and a vertical blanking interval, the reproducing apparatus comprising:
a decoding unit configured to decode pixel data serving as playback content to generate the pixel data of the uncompressed image; a signal transmitting unit configured to transmit, to the receiver, a second differential signal representing transmission data different from the pixel data of the uncompressed image via differential transmission lines formed from a pair consisting of a first signal line and a second signal line; a signal receiving unit connected to the signal transmitting unit, the signal receiving unit receiving a third differential signal transmitted from the receiver via the first signal line and the second signal line; and a subtracting circuit configured to subtract the second differential signal from the signal received by the signal receiving unit.