公开(公告)号：US10152295B2

公开(公告)日：2018-12-11

申请号：US15168483

申请日：2016-05-31

Applicant: MediaTek Inc.

Inventor： Chun-Hung Chen ,  Chien-Chou Ko ,  Chiung-Fu Chen ,  Yi-Cheng Chen

IPC: G06F3/14

Abstract: An electronic device and an associated method for displaying image data on a first display device of a first electronic device and a second display device of a second electronic device external of the first electronic device are provided. The method includes the steps of: determining whether image data to be displayed on the first and second display devices are the same; when the image data to be displayed on the first and second display devices are the same, estimating the first resource consumption required when the extension mode is selected for displaying the image data and the second resource consumption required when the mirror mode is selected for displaying the image data; and determining to display the image data on the first and second display devices in the extension mode or the mirror mode according to the first and second estimated resource consumption.

公开(公告)号：US11962847B1

公开(公告)日：2024-04-16

申请号：US18054022

申请日：2022-11-09

Applicant: MEDIATEK INC.

Inventor： Chia-Hao Chang ,  You-Tsai Jeng ,  Kai-Wen Yeh ,  Yi-Cheng Chen ,  Te-Chuan Wang ,  Kai-Wen Cheng ,  Chin-Lung Lin ,  Tai-Lai Tung ,  Ko-Yin Lai

IPC: H04N21/4363 ,  H04N21/4405

CPC classification number: H04N21/4405 ,  H04N21/43635

Abstract: A channel hiatus correction method for an HDMI device is provided. A recovery code from scrambled data of the stream is obtained. A liner feedback shift register (LFSR) value of channels of the HDMI port is obtained based on the recovery code and the scrambled data of the stream. The stream is de-scrambled according to the LFSR value of the channels of the HDMI port. Video data is displayed according to the de-scrambled stream.

公开(公告)号：US11205401B1

公开(公告)日：2021-12-21

申请号：US17242409

申请日：2021-04-28

Applicant: MEDIATEK INC.

Inventor： You-Tsai Jeng ,  Kai-Wen Cheng ,  Chin-Lung Lin ,  Yi-Cheng Chen ,  Te-Chuan Wang ,  Chi-Chih Chen ,  Szu-Hsiang Lai ,  Tai-Lai Tung ,  Keng-Lon Lei

IPC: G09G5/12

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.

公开(公告)号：US11770583B1

公开(公告)日：2023-09-26

申请号：US17814024

申请日：2022-07-21

Applicant: MEDIATEK INC.

Inventor： You-Tsai Jeng ,  Chia-Hao Chang ,  Yi-Cheng Chen ,  Kai-Wen Yeh ,  Kuo-Chang Cheng ,  Chi-Chih Chen ,  Szu-Hsiang Lai ,  Chin-Lung Lin ,  Kai-Wen Cheng ,  Te-Chuan Wang ,  Ko-Yin Lai ,  Keng-Lon Lei ,  Tai-Lai Tung

IPC: H04N5/63 ,  H04N21/436 ,  H04N21/4363

CPC classification number: H04N21/43635 ,  H04N5/63

Abstract: A power-saving method for an HDMI device is provided. The method includes detecting color depth information of video data from an HDMI source which is connected to the HDMI port, deriving a horizontal length for each line by fragment of a picture frame according to the color depth information, generating a plurality of synchronization signals according to the horizontal length for each line by fragment, and powering on the HDMI port, according to the synchronization signals, for a predetermined time period to obtain encrypted information from the HDMI source, and powering off the HDMI port after the predetermined time period.