The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 21, 2021
Filed:
Apr. 28, 2021
Mediatek Inc., Hsinchu, TW;
You-Tsai Jeng, Hsinchu, TW;
Kai-Wen Cheng, Hsinchu, TW;
Chin-Lung Lin, Hsinchu, TW;
Yi-Cheng Chen, Hsinchu, TW;
Te-Chuan Wang, Hsinchu, TW;
Chi-Chih Chen, Hsinchu, TW;
Szu-Hsiang Lai, Hsinchu, TW;
Tai-Lai Tung, Hsinchu, TW;
Keng-Lon Lei, Hsinchu, TW;
MEDIATEK INC., Hsinchu, TW;
Abstract
A power-saving method for switching High Definition Multimedia Interface (HDMI) ports on a sink device is provided. The sink device has a first HDMI port initially being enabled for displaying and a second HDMI port being disabled for displaying. The power-saving method includes the steps of using the reference signals to locate the VSYNC active edge in each frame generated by a source device connected to the second HDMI port; turning on the power to the second HDMI port during a power-on region corresponding to the VSYNC active edge in each frame and turning off power otherwise; obtaining information related to a high bandwidth digital content protection (HDCP) in the power-on region; and displaying video data from the source device based on the HDCP information when enabling the second HDMI port connected to the source device.