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Method and system for demultiplexing TS (transport stream) transport stream by set top box

A demultiplexing and transport stream technology, applied in image communication, selective content distribution, electrical components, etc., can solve the problem of high cost of set-top boxes, achieve low cost, reduce production cost, and increase utilization

Active Publication Date: 2015-06-17
四川九洲投资控股集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for demultiplexing TS transport streams in a set-top box aiming at the technical problem that the cost of the set-top box is high due to the use of hardware demultiplexing circuits in the prior art

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Embodiment Construction

[0016] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0017] The present invention discloses a method for set-top box demultiplexing TS transport stream, which specifically includes the following steps: 1. The sending end multiplexes multiple programs to form a TS transport stream and transmits it to the set-top box CPU for demultiplexing; 2. Demultiplexing The multiplexing process reads the TS transport stream data, and identifies the TS packet according to the TS packet's flag bit; 3. Analyzes the TS packet header and finds the program association table PAT according to the packet identifier PID, where the packet identifier PID of the PAT = 0; 4. Analyze the pro...

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Abstract

The invention relates to the technical field of a digital television set top box, and discloses a method for a demultiplexing a TS (transport stream) transport stream by a set top box. The method concretely comprises the following steps of: 1. multiplexing a plurality of paths of programs by a transmitting end; 2. reading and recognizing a TS packet by using a demultiplexing process; 3. analyzing a TS packet head; 4. analyzing a program association table (PAT); 5. finding out a corresponding audio TS data packet and a video TS data packet from TS according to a PID (process identifier) of audio data and a PID of video data in a program mapping table (PMT), and analyzing the audio TS data packet and the video TS data packet to obtain and output demultiplexed audio data and video data. Any hardware cost does not need to be increased; the production cost of the set top box is reduced; and meanwhile, the utilization of a CPU (central processing unit) in the set top box is also improved.

Description

Technical field [0001] The present invention relates to the technical field of set-top boxes, and in particular to a method and system for demultiplexing TS transmission streams of a set-top box. Background technique [0002] MPEG-2 is an image compression standard formulated by ISO / IEC / JTC1 / SC29 / WG11. It was developed to meet the comprehensive requirements of digital TV program generation, editing, storage, transmission and reality. It is widely used in digital TV broadcasting and DVD. Digital TV basically adopts the MPEG-2 standard for compression and packet transmission. In order to be compatible with digital TV broadcast programs, IPTV also adopts the MPEG-2 standard for its audio and video. In order to improve bandwidth utilization, the sending end generally multiplexes multiple programs to form a multip program transport stream (TS transport stream), so our IPTV set-top box end needs to encapsulate the received stream or TS Demultiplexed files. In the prior art, demultip...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/434
Inventor 李东旭申及
Owner 四川九洲投资控股集团有限公司
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