home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky rec.video.cable-tv:2054 sci.electronics:19389
- Newsgroups: rec.video.cable-tv,sci.electronics
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!mcdchg!mcdphx!schuch
- From: schuch@phx.mcd.mot.com (John Schuch)
- Subject: Re: Seeking info on unusual cable scramble
- Message-ID: <1992Nov21.125352.13112@phx.mcd.mot.com>
- Sender: news@phx.mcd.mot.com
- Nntp-Posting-Host: bopper2.phx.mcd.mot.com
- Organization: Motorola Computer Group, Tempe, Az.
- References: <1992Nov20.043919.26691@gagme.chi.il.us>
- Distribution: na
- Date: Sat, 21 Nov 1992 12:53:52 GMT
- Lines: 27
-
- In article <1992Nov20.043919.26691@gagme.chi.il.us> net@gagme.chi.il.us (Whoami Anyway) writes:
- >
- >The vertical blanking interval has a pulsating white line on its top
- >edge, near the middle of the vbi. This white line pulses rapidly and
- >has very little effect on the received picture (except for an annoying
- >flicker near the bottom of the screen), but if a VCR is switched in
- >
- >Here is the rub.
- >
- >On Cableco supplied converters, this little pulse on the vbi is masked
- >with a line of black positioned 'over' the pulse to hide it. You can
- >see the edges of the pulse flickering slightly, but the bulk of the
- >
-
- Interesting, blast a signal of a very specific frequency out the front
- of your TV. That could probably be detected some distance away, like
- from a van in the street in front of your house.
-
- The is absolute conjecture, but interesting none the less.
-
- John
-
- --
- | ONE LINE NOVEL: She backed away from the corpse slowly, not so much out |
- | of fear, but simply unsure of what the crowd expected her to do with it. |
- +--------------------------------------------------------------------------+
- | John R. Schuch - Motorola Computer Group - Manufacturing Engineering |
-