Channel hiatus correction method and HDMI device
AssigneeMediatek Inc.
InventorsChia-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
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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.
Claims16
A channel hiatus correction method for a high-definition multimedia interface (HDMI) device, comprising:
- obtaining a stream from a source device through an HDMI port of the HDMI device;
- obtaining a recovery code from scrambled data of the stream, wherein the recovery code is leading guard band data, trailing guard band data, or preamble data from the source device;
- obtaining a linear feedback shift register (LFSR) value of channels of the HDMI port based on the recovery code and the scrambled data of the stream;
- de-scrambling the stream according to the LFSR value of the channels of the HDMI port;
- and
- displaying video data according to the de-scrambled stream.
A high-definition multimedia interface (HDMI) device, comprising:
- an HDMI interface, comprising a plurality of HDMI ports;
- a controller coupled to the HDMI interface and configured to obtain a stream from a source device through a first HDMI port of HDMI ports, and comprising:
- a channel hiatus corrector configured to obtain a linear feedback shift register (LFSR) value of channels of the first HDMI port based on scrambled data of the stream and a recovery code, wherein the recovery code is leading guard band data, trailing guard band data, or preamble data from the source device;
- and
- a de-scrambler configured to de-scramble the stream according to the LFSR value of channels of the first HDMI port;
- and
- a display device coupled to the controller, and configured to display video data according to the de-scrambled stream.
Dependencies are inferred from the claim text.