Packet video/audio system using the asynchronous transfer mode technique

H. Jonathan Chao, Cesar A. Johnston, Lanny S. Smoot

Research output: Contribution to journalArticle

Abstract

A description is given of a prototype point-to-point packet transmission system which integrates a fixed-bit-rate PCM-coded NTSC-quality video signal and two multiplexed audio channels for broadband integrated services digital network (B-ISDN) service. The system contains an assembler interface card at the transmit end and a disassembler interface card at the receive end. At the assembler interface card, service equipment is connected in a daisy-chained architecture. Information is integrated into a SONET-like asynchronous transfer mode (ATM) data stream. At the disassembler interface card incoming information is broadcast to each piece of receive service equipment. Only information addressed to the equipment is filtered out. Service clock information which is not carried by the network is recovered by the receive equipment using a digital phase-locked loop. The framing, deframing and multiplexing of services were facilitated by using Bellcore's custom-designed CMOS Framer chips. This system provides a broadband service multiplexer and demultiplexer capable of integrating high-bandwidth services such as full motion video, and lower bit-rate services (eg. audio) using a uniform system structure. The ATM technique as well as the cell headers used in this prototype are also discussed.

Original languageEnglish (US)
Pages (from-to)97-105
Number of pages9
JournalIEEE Transactions on Consumer Electronics
Volume35
Issue number2
DOIs
StatePublished - May 1989

Fingerprint

Audio systems
Asynchronous transfer mode
Pulse code modulation
Voice/data communication systems
Phase locked loops
Multiplexing
Clocks
Bandwidth

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Packet video/audio system using the asynchronous transfer mode technique. / Chao, H. Jonathan; Johnston, Cesar A.; Smoot, Lanny S.

In: IEEE Transactions on Consumer Electronics, Vol. 35, No. 2, 05.1989, p. 97-105.

Research output: Contribution to journalArticle

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