Mediatek Corporation

Mstar Semiconductor, Inc.

Keng-Lon Lei

Tai-Lai Tung

You-Tsai Jeng

Kai-Wen Cheng

Szu-Hsiang Lai

Yi-Cheng Chen

Chin-Lung Lin

Chi-Chih Chen

Te-Chuan Wang

Chia-Hao Chang

Ko-Yin Lai

Fang-Ming Yang

Kai-Wen Yeh

Kuo-Yu Lee

Kuo-Chang Cheng

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.

HDMI device and power-saving method for immediately switching HDMI ports

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.

A word boundary detection method includes receiving a data stream from a data channel of a high definition multimedia interface (HDMI), and performing pattern matching upon the data stream to identify a word boundary between two consecutive codewords transmitted via the data stream. Known codewords of scrambled control vectors are involved in the pattern matching.

Method and apparatus for detecting word boundary between codewords in data stream transmitted via data channel of high definition multimedia interface

An apparatus for eliminating impulse interference includes an impulse interference detecting unit, an impulse interference eliminating unit and a control unit. The impulse interference detecting unit detects whether impulse interference exists in an input signal according to a predetermined condition, and generates an impulse interference eliminating request when having detected that the input signal satisfies the predetermined condition. In response to the impulse interference eliminating request, the impulse interference eliminating unit performs an impulse interference eliminating process on the input signal to generate an output signal. According to an output signal quality index associated with the output signal, the control unit selectively adjusts the predetermined condition used for detecting whether the impulse interference exists.

Apparatus and method for eliminating impulse interference

Growing community of inventors

Hsinchu, Taiwan

Keng-Lon Lei