Interface Circuit For Transmitting And Receiving Digital Signals Between Devices
AssigneeSony Corporation
InventorsGen Ichimura, Hidekazu Kikuchi, Yasuhisa Nakajima
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Abstract
A video signal and an audio signal are TMDS transmitted from a source device to a sink device. Through a reserved line and a HPD line provided separately from a TMDS transmission line, an Ethernet™ signal is bidirectionally transmitted, and also, a SPDIF signal is transmitted from the sink device to the source device. The Ethernet™ signal bidirectionally transmitted between Ethernet™ transmitter/receiver circuits is differentially transmitted by an amplifier and is received by the amplifier. The SPDIF signal from a SPDIF transmitter circuit is common-mode transmitted from an adder and is received by the adder to be supplied to the SPDIF receiver circuit.
Claims1
An interface circuit comprising:
- a first transmitting section for transmitting a first signal as a differential signal to an external device through a transmission line;
- and
- a second transmitting section for transmitting a second signal, being multiplexed to the transmission line, as a common-mode signal to the external device.
Dependencies are inferred from the claim text.