Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site qantel.UUCP Path: utzoo!watmath!clyde!bonnie!akgua!whuxlm!whuxl!houxm!mtuxo!mtunh!mtung!mtunf!ariel!vax135!timeinc!phri!pesnta!amd!amdcad!decwrl!decvax!genrad!mit-eddie!think!harvard!seismo!umcp-cs!gymble!lll-crg!dual!qantel!stv From: stv@qantel.UUCP (Steve Vance@ex2499) Newsgroups: net.video Subject: Re: counters on VCRS Message-ID: <476@qantel.UUCP> Date: Thu, 27-Jun-85 17:17:45 EDT Article-I.D.: qantel.476 Posted: Thu Jun 27 17:17:45 1985 Date-Received: Wed, 3-Jul-85 06:37:03 EDT References: <433@zinfandel.UUCP> <1346@hammer.UUCP> <174@tekcrl.UUCP> Reply-To: stv@qantel.UUCP (Steve Vance@ex2499) Organization: MDS Qantel, Hayward, CA Lines: 20 >>the spool rpms change. *Real* VCRs, like the Sony SL-2700, run >>the tape counter off the signals recorded on the tape. The tape >>counter reads in hours/minutes/seconds, and is *correct*. I doubt >>if any VHS machines do this, since the tape has to come off the >>head for fast-wind, and you couldn't pick up the timing signals. Is that how Beta does it? Some European company (Phillips?) has a scheme that measures the speed difference between the feeder and take-up hubs, and determines where you are on the tape based on that information. When you insert a tape, it moves it a couple of inches before loading it, to see where it is positioned. After that, it displays HH:MM:SS, to within about 30 seconds accuracy, no matter how the tape moves. I can't name any models available in the US which use this method, but it would work just as well for VHS as for Beta. -- Steve Vance {dual,hplabs,intelca,nsc,proper}!qantel!stv dual!qantel!stv@berkeley Qantel Corporation, Hayward, CA