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Transmission stream coder and method for coding transmission stream

A coding method and technology of transport stream, applied in the field of moving picture expert group system, can solve problems such as difficult to reconstruct frame information

Inactive Publication Date: 2005-04-06
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because since the PSI information occurs every 0.7 seconds, it is difficult to reconstruct the information about the desired frame

Method used

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  • Transmission stream coder and method for coding transmission stream
  • Transmission stream coder and method for coding transmission stream
  • Transmission stream coder and method for coding transmission stream

Examples

Experimental program
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Embodiment Construction

[0023] figure 1 A and 1B denote the structures of packetized elementary stream (PES) packets and transport stream (TS) packets, respectively. Specified in ISO / IEC 13818-1 figure 1 The PES packet and TS packet shown in A and 1B, among which ISO / IEC 13818-1 is a specification related to the MPEG-2 system.

[0024] A PES packet consists of a header and a payload, and its length is variable. Information about the length of the PES packet is contained in the header.

[0025] A TS packet is composed of a header of four bytes, an adaptation field of n bytes, and a payload of (184-n) bytes, and its total length is 188 bytes.

[0026] figure 2 express figure 1 The detailed structure of the PES packet shown in A.

[0027] exist figure 2 In the shown PES packet, the content of each element is as follows.

[0028] PES start code prefix → "0x000001"

[0029] Stream identifier → "1110xxxxx": ISO / IEC 11172-2 video stream number xxxx

[0030] "110xxxxxx": ISO / IEC 11172-3...

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Abstract

A TS encoder for encoding video and audio signals in units of fields is provided. A transport stream (TS) encoding method for receiving an MPEG elementary stream and generating a transport stream includes the steps of (a) generating a packetized elementary stream (PES) header in units of fields of the elementary stream, (b) generating a PES header valid period signal for denoting the valid period of the PES header, (c) recording the PES header and the elementary stream in synchronization with the PES header valid period signal, (d) generating a TS header period signal for denoting a period in which the TS header is to be recorded, (e) reading the PES header and the elementary stream in synchronization with the TS header period signal, and (f) generating the TS packet by adding the TS header to the PES header and to the elementary stream, according to the timing at which the TS header is to be recorded.

Description

technical field [0001] The present invention relates to a Moving Picture Experts Group (MPEG) system, in particular to a Transport Stream (TS) encoder and a corresponding method for encoding elementary streams in field units in MPEG-2. Background technique [0002] The MPEG-2 system specifies the syntax of MPEG audio and video streams. There are two types of methods in the MPEG system. One is called Program Stream (PS), and is used to compose a program. The other is called a Transport Stream (TS), and is used to compose multiple programs. [0003] In the MPEG system, a packet multiplexing method is used. That is, the MPEG system divides a video / audio elementary stream (ES) into bit streams in units of packets, and multiplexes the video / audio elementary stream with additional information such as a header. In this case, information for distinguishing video packets from audio packets is included in the header. In order to adapt to various applications, the length of the gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/00H04N7/24H04N7/60H04N19/00H04N19/48H04N19/70H04N21/236H04N21/434
CPCH04N21/434H04N21/236
Inventor 全钟求
Owner SAMSUNG ELECTRONICS CO LTD