Cell Relay Archive

[R Wilcox <nulldevice@eli.net>]

Many companies are entering this field. I do not follow the LAN,enterprise,
video server, video conferencing, set top box, etc. markets.Comments below
primarily apply to high quality applications.

> Han Jae Sun wrote in message <355060D1.9ADD029D@eeinfo.kaist.ac.kr>...
> >Hi  all,
> >
> >I am planning to design the ATM terminal equipment for MPEG Video.
> >
> >I am considering in the following way.
> >
> >1. Service Requirements

Video, audio interface formats (component, composite, NTSC/PAL, etc.).Degree
of compression. IBP or I frame only. Treatment of VBI data. Conditional
access. Standards
based transport stream to ATM mapping?

> >2. QoS Requirements

Usually CBR. You may consider forward error correction. If not, how will the
decoder deal with lost cells?

> >3. Design Considerations

Cost. Audio-video sync. Designed for continuous 24x7 use or intermittant
use? SW upgradeability. Remote management, diagnostics, statistics.

> >I would be very grateful if anyone could tell me his or her opinion
> >and where I can find the infomation of the real products.

You might start with codec chip manufacturers. Two large ones are C-Cube and
IBM.
www.ccube.com
http://www.chips.ibm.com/products/mpeg/news.html

They should be very helpful with your product definition and design if you
may
buy their chips.

In the professional area, MPEG-2 /ATM terminal vendors include:

www.inovacom-mpeg2.com (transpeg)
www.ecitele.com (Hi-TV)
www.oki.co.jp (YS3110,YS3200)
www.lucent.com (MPEG-2 Digital Video System)
www.optivision.com (LiveSystem)
www.nortel.com (DV-MPEG series)
www.gdc.com (VIP series)
www.newbridge.com (36150)

Hope this helps for your application.

R. Wilcox
Electric Lightwave, Inc.