KR970057859A

KR970057859A - PSI Data Extraction Device and Extraction Method in Digital DBS System

Info

Publication number: KR970057859A
Application number: KR1019950061350A
Authority: KR
Inventors: 류충일
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1995-12-28
Filing date: 1995-12-28
Publication date: 1997-07-31

Abstract

본 발명은, 소정 채널이 선택되는 경우 상기 채널신호에 포함된 AV PIP정보를 버퍼수단의 PMT 버퍼부에 테이블화하여 기록함으로써 상기 채널이 다시 선택되는 경우 상기 테이블로부터 직접 AV PID정보를 추출하게 되어 PMT 버퍼부의 모든 부분을 검색하지 않도록 된 디지탈 DBS시스템에 있어서 PSI 데이터 추출장치 및 그 추출방법에 관한 것으로, TS패킷으로부터 PAT패킷을 추출하여 버퍼수단(18)의 소정 PAT버퍼부에 기록함과 더불어 상기 PAT패킷으로부터 추출된 PMT패킷의 PID를 기초로 TS패킷으로부터 PMT패킷을 추출하여 상기 버퍼수단(18)의 소정 PMT버퍼부에 기록하는 MPEG2 시스템 디먹스(16)와, 이 MPEG2 시스템 디먹스(16)로부터의 PAT패킷과 PMT패킷을 기록하는 버퍼수단(18) 및, 리모트 콘트롤러(30)로부터 채널신호 입력시 상기 버퍼수단(18)으로부터 상기 채널에 대한 AV PID를 검출하기 위한 제어신호를 출력하는 마이크로 프로세서(28)를 구비하여 구성된 것을 특징으로 한다.According to the present invention, when a predetermined channel is selected, the AV PIP information included in the channel signal is tabled and recorded in the PMT buffer unit of the buffer means, and when the channel is selected again, the AV PID information is directly extracted from the table. In a digital DBS system that does not search all parts of the PMT buffer unit, the present invention relates to a PSI data extracting apparatus and a method for extracting the same. MPEG2 system demux 16 which extracts PMT packets from TS packets on the basis of PIDs of PMT packets extracted from PAT packets, and writes them to predetermined PMT buffer portions of the buffer means 18, and this MPEG2 system demux 16 Buffer means 18 for recording PAT packets and PMT packets from the < RTI ID = 0.0 >) < / RTI > By a microprocessor (28) for outputting a control signal for detecting the AV PID is characterized in that configured.

Description

PSI Data Extraction Device and Extraction Method in Digital DBS System

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 디지탈 DBS시스템에 있어서, PSI 데이터 추출장치의 블록도,1 is a block diagram of a PSI data extraction apparatus in a digital DBS system according to the present invention;

제5도는 본 발명에 따른 디지탈 DBS시스템에 있어서 PSI 데이터 추출장치 및 그 추출방법의 동작흐름을 도시한 흐름도.5 is a flowchart showing the operation flow of the PSI data extraction apparatus and its extraction method in the digital DBS system according to the present invention.

Claims

The PAT packet is extracted from the TS packet and recorded in the predetermined PAT buffer section of the buffer means 18, and the PMT packet is extracted from the TS packet based on the PID of the PMT packet extracted from the PAT packet. Channel signal input from the MPEG2 system demux 16 recorded in the predetermined PMT buffer section, the buffer means 18 for recording the PAT packet and PMT packet from the MPEG2 system demux 16, and the remote controller 30. And a microprocessor (28) for outputting a control signal for detecting the AV PID for the channel from the buffer means (18).

2. The PSI data extracting apparatus according to claim 1, wherein said buffer means (18) comprises a plurality of PAT buffer portions and PMT buffer portions.

Receiving a predetermined channel signal from the remote controller 30, detecting whether the channel signal is the channel number of the PID table, and detecting whether the VALID FLAG is 1 if the channel signal is the PID table. Detecting, and if the channel signal is not the channel number of the PID table, searching for PROG # corresponding to the channel number from the PMT buffer, and detecting and recording the AV PID associated with the PROG # to the PID table. PSI data extraction method for a digital DBS system, characterized in that made.

※ Note: The disclosure is based on the initial application.