Title :
High quality packet video terminal
Author :
Anirudhan, P.N. ; Izzard, Martin J. ; Chang, Helen S.
Author_Institution :
DSPS R&D Center, Texas Instrum. Inc., Dallas, TX, USA
Abstract :
Asynchronous transfer mode (ATM) network protocols can provide guaranteed quality of service for jitter sensitive video traffic. However current terminals (i.e., PCs, workstations) present a bottleneck since they do not provide a real time packet service. In a previous work the authors showed that a workstation terminal can introduce upto 500 ms of jitter in the video stream due to software packet handling. This report describes the design of a prototype terminal capable of supporting high quality packet video applications in real time. We describe a decentralized network terminal architecture that modifies a PC to a video terminal capable of less than 50 μs jitter. The video channel between the network interface and the video subsystem is sustained without any CPU involvement, thus allowing multitasking
Keywords :
asynchronous transfer mode; computer networks; jitter; microcomputer applications; network interfaces; real-time systems; telecommunication terminals; video equipment; visual communication; ATM network protocols; asynchronous transfer mode network protocols; decentralized network terminal architecture; design; high quality packet video terminal; jitter sensitive video traffic; multitasking; network interface; prototype terminal; quality of service; real time packet service; video channel; video stream; video subsystem; workstation terminal; Asynchronous transfer mode; Jitter; Personal communication networks; Protocols; Prototypes; Quality of service; Software prototyping; Streaming media; Telecommunication traffic; Workstations;
Conference_Titel :
Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-4198-8
DOI :
10.1109/GLOCOM.1997.638426
