KR960028396A

KR960028396A - AAL 1 Transmitter for MPEG Packet Transmission

Info

Publication number: KR960028396A
Application number: KR1019940038178A
Authority: KR
Inventors: 윤성욱
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1994-12-28
Filing date: 1994-12-28
Publication date: 1996-07-22

Abstract

본 발명은 MPEG패킷을 전송하기 위한 AAL 1 송신장치에 관한 것으로, 스타트신호 및 53 카운터(16)의 완료신호에 따라 순서번호를 증가시켜 카운트 스타트신호와 4개의 SAR헤더를 발생하는 SAR헤더발생부(12)와; 초기화신호(INIT)에 따라 클리어되고, 카운트 스타드(start)신호에 따라 53 카운트를 시작하여 제어신호를 발생하는 53 카운터(16)와; 5바이트의 ATM 헤더를 발생한 후 상기 SAR헤더발생부의 출력에 따라 출력하는 ATM헤더발생부(12); FIFO리드제어신호(FIFO RD CONT)에 따라 상기 AAL FIFO(1)로부터 47바이트의 MPEG 데이타를 읽어 오는 FIFO리드회로(18); 상기 멀티플랙서 선택신호(MUX SEL)에 따라 상기 ATM헤더, SAR헤더, 47바이트의 데이타를 순차적으로 선택하여 출력하는 멀티플랙서(20); 및 상기 멀티플랙서(20)의 출력을 입력하여 상기 FIFO라이트 제어신호(FIFO WR CONT)에 따라 ATM FIFO(3)에 라이트하는 FIFO라이트회로(22)를 구비하여 상위계층이 MPEG패킷을 ALL FIFO(1)에 라이트한 후 스타트(start)신호로서 카운트를 개시하여 AAL 타입 1에 따른 서비스로 상기 패킷을 ATM FIFO(3)에 전송한다.The present invention relates to an AAL 1 transmitter for transmitting an MPEG packet, wherein the SAR header generator generates a count start signal and four SAR headers by increasing the sequence number according to the start signal and the completion signal of the 53 counter 16. 12; A 53 counter 16 that is cleared in accordance with the initialization signal INIT, and starts 53 counts according to the count start signal to generate a control signal; An ATM header generator (12) for generating a 5-byte ATM header and outputting the header according to the output of the SAR header generator; A FIFO read circuit 18 for reading 47 bytes of MPEG data from the AAL FIFO 1 according to a FIFO RD CONT; A multiplexer 20 for sequentially selecting and outputting data of the ATM header, the SAR header, and 47 bytes according to the multiplexer selection signal (MUX SEL); And a FIFO light circuit 22 for inputting the output of the multiplexer 20 and writing to the ATM FIFO 3 in accordance with the FIFO light control signal FIFO WR CONT. After writing to (1), the count is started as a start signal, and the packet is transmitted to the ATM FIFO 3 by the service according to AAL type 1.

Description

AAL 1 Transmitter for MPEG Packet Transmission

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

제1도는 본 발명에 따른 AAL 1 송신장치를 설명하기 위하여 도시한 것으로서, (가)는 AAL계층의 데이타 흐름 구조를 도시한 도면, (나)는 SAR-PDU 데이타의 포맷을 도시한 도면, 제2도는 본 발명에 따른 AAL 1 송신장치를 도시한 블럭도.1 is a diagram illustrating an AAL 1 transmitter according to the present invention, (A) shows a data flow structure of an AAL layer, (B) shows a format of SAR-PDU data, and FIG. 2 is a block diagram showing an AAL 1 transmitter according to the present invention.

Claims

In an AAL 1 transmitter, the upper layer writes an MPEG packet to ALL FIFO 1 and then starts counting as a start signal and transmits the packet to the ATM FIFO 3 as a service according to AAL type 1. A SAR header generator (12) for generating a count start signal and four SAR headers by increasing the sequence number according to the start signal and the completion signal of the 53 counter (16); It is cleared according to the initialization signal INIT, and 53 counts are started according to the count start signal. A 53 counter 16 for generating a completion signal COMPLETE; An ATM header generator (12) for generating a 5-byte ATM header and outputting the same according to the output of the SAR header generator; A FIFO read circuit 18 generating a FIFO read signal FIFO RD according to the FIFO read control signal FIFO RD CONT and reading 47 bytes of MPEG data from the AAL FIFO 1; A multiplexer 20 for sequentially selecting and outputting data of the ATM header, the SAR header, and 47 bytes according to the multiplexer selection signal (MUX SEL); And a FIFO light circuit 22 for inputting the output of the multiplexer 20 to generate a FIFO light signal FIFO WR according to the FIFO light control signal FIFO WR CONT to write to the ATM FIFO 3. An AAL 1 transmitter for MPEG packet transmission, characterized in that.

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