Path: utzoo!telecom-request Date: Tue, 11 Jun 91 09:11:01 -0400 From: clements@bbn.com Newsgroups: comp.dcom.telecom Subject: Re: Transporting a Bitstream on a Video Channel Message-ID: Organization: TELECOM Digest Sender: Telecom@eecs.nwu.edu Approved: Telecom@eecs.nwu.edu X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@eecs.nwu.edu X-Telecom-Digest: Volume 11, Issue 450, Message 11 of 11 Lines: 39 In article rmz@ifi.uio.no writes: > Does anyone know about existing hardware that puts a bitstream on a > video channel and let you extract the same bitstream out of the video > video signal, after it has been transmitted on standard video > transport media such as satellite links, video cassettes and cable TV > networks. > But, the Big Question is: Does this hardware exist? Devices exist to put compact-disc audio bit streams on videotape as "PCM" signals in NTSC format. Examples are the Sony PCM-501 and PCM-601. I have used them to record CD audio for storage and also to distribute it around the house on coax as a channel 3 video RF signal. This format has been used on the air in Boston to transmit audio from WGBH radio over WGBX TV (channel 44). How you get your data into the format of a CD player's digital output is a good question, though. Also, there are devices for recording on a VCR from a PC for backup. I assume (but haven't tried it) that the video signal that goes to the VCR could be shipped around by the video transport media you mention. I haven't actually used one of these things so I can't give you any better specifics. Check rec.audio for the former and the ibm-pc hardware group for the latter. Bob Clements, K1BC, clements@bbn.com [Moderator's Note: As mentioned a couple issues ago, a large number of REply messages on Hollings and other worn-out threads had to be dumped out unused in order to stay current with new items. If your REply message on an existing topic did not appear in this issue, you can pretty well assume it won't appear. This would apply to ACKS sent from here prior to 1 AM, 6-12-91. Thanks. PAT]