Digital video frequency broadcasting switching method and apparatus thereof

A technology of digital video broadcasting and conversion method, which is applied in the direction of TV, color TV, parts of color TV, etc., and can solve problems such as the inability to input transmission code streams, etc.

Inactive Publication Date: 2006-05-17
XIAN TONGSHI CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The DVD player chip only accepts the program code stream and cannot input t

Method used

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  • Digital video frequency broadcasting switching method and apparatus thereof
  • Digital video frequency broadcasting switching method and apparatus thereof
  • Digital video frequency broadcasting switching method and apparatus thereof

Examples

Experimental program
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Embodiment Construction

[0027] see figure 1 , the concrete method of the present invention is as follows:

[0028] 1) Receive transport stream data;

[0029] 2) Preprocessing the transmission stream data;

[0030] 3) Adjust the bit rate of the preprocessed transport stream data so that it is lower than the highest rate of the audio serial interface format;

[0031] 4) Convert the transmission stream data into audio serial interface format data;

[0032] 4.1) Sort the transmission stream data according to the audio serial interface data sequence requirements to obtain the audio serial interface data DATA;

[0033] 4.2) Generate a clock BCK synchronized with the audio serial interface data DATA;

[0034] 4.3) Generate left and right channel switching signal LRCK to form audio serial interface format data.

[0035] 5) Output the audio serial interface format data from the audio serial interface.

[0036] The preprocessing process of the transport code stream data in step 2) includes the preprocess...

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PUM

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Abstract

A method for converting digital video broadcast includes receiving transmission code stream data, carrying out preprocessing on transmission code stream data, adjusting bit rate of transmission code stream data being preprocessed to let it be lower than maximum rate of audio serial interface format, converting transmission code stream data to be audio serial interface format data and outputting converted data through audio serial interface.

Description

1. Technical field [0001] The invention relates to a digital video broadcast conversion method and device, in particular to a method and device for converting a transport code stream into an audio serial interface format. 2. Background technology [0002] The two data formats specified by the MPEG2 system are program code stream (PS) and transport code stream (TS). Among them, the program code stream is mainly designed for local applications, and the length of the data frame is not fixed. Such as DVD); the transport stream is designed for digital video broadcasting (DVB) applications. Because the channel environment is unpredictable, the transport stream consists of a fixed packet length, which is conducive to rapid synchronization in the event of errors. [0003] Audio serial interfaces include LRCK, BCK, DATA, etc. where BCK is the serial audio bit clock. Its function is to send the existing data on the DATA into the shift register of the audio interface through this clo...

Claims

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Application Information

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IPC IPC(8): H04N5/765
Inventor 沈雪峰
Owner XIAN TONGSHI CO
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