TRANSMISSION SYSTEM AND RELAY DEVICE
First Claim
1. A transmission system for transmitting a video signal from a source device to a sink device via a relay device, wherein the sink device supplies a power to the relay device on the basis of a request from the relay device.
5 Assignments
0 Petitions
Accused Products
Abstract
Provided is a system for supplying a power from a sink device to a source device. Not only the source device but also a cable or a repeater device to be connected thereto has compatibility in power supply. A physical address obtained from information of an EDID memory forms a base of CEC message exchange, but a physical address of the cable or repeater device is overlapped with the source device or unknown. The cable or a repeater device uses changes the type of a message while using the same physical address as the source device or use such a message having the physical address information of the source device is described in a parameter of the message using the unknown physical address. The message having a supply or reception current for each device described therein is exchanged with the sink device or the source device to adjust current reception.
21 Citations
6 Claims
- 1. A transmission system for transmitting a video signal from a source device to a sink device via a relay device, wherein the sink device supplies a power to the relay device on the basis of a request from the relay device.
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6. A relay device for transmitting a video signal from a source device to a sink device, wherein a communication message sent from the relay device to the source device and/or the sink device includes a parameter indicative of whether a terminal for receiving a current from the sink device is connected to a current supply terminal to the source device or disconnected therefrom.
Specification