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1. (WO2018086221) HDMI INTERFACE CIRCUIT FOR MASTER DEVICE AND METHOD FOR SUPPLYING POWER TO SLAVE DEVICE ON BASIS OF HDMI INTERFACE

Pub. No.:    WO/2018/086221    International Application No.:    PCT/CN2016/112830
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Fri Dec 30 00:59:59 CET 2016
IPC: H04N 5/765
Applicants: SHENZHEN TCL DIGITAL TECHNOLOGY LTD.
深圳TCL数字技术有限公司
Inventors: WU, Youzhao
吴有肇
Title: HDMI INTERFACE CIRCUIT FOR MASTER DEVICE AND METHOD FOR SUPPLYING POWER TO SLAVE DEVICE ON BASIS OF HDMI INTERFACE
Abstract:
An HDMI interface circuit for a master device and a method for supplying power by a master device to a slave device on the basis of an HDMI interface. The HDMI interface circuit for a master device comprises: an HDMI interface (10); a switch module (50), an output end of which is connected to the HDMI interface (10); a power supply module (40) connected to the HDMI interface (10) by means of the switch module (50); a detection module (20) used for detecting a resonance signal of the slave device when the HDMI interface (10) accesses the slave device and outputting a corresponding detection signal when detecting the resonance signal; and a control module (30) used for controlling the switch module (50) to be turned on when receiving the detection signal to control the power supply module (40) to supply power to the slave device by means of the HDMI interface (10). According to the interface circuit and the method, the master device supplies power to the slave device by means of the HDMI interface (10) so that there is no need to separately configure a power supply for the slave device, thereby reducing the size of the slave device and miniaturizing the slave device.