Article View: sci.electronics
Article #3536Re: Commercial killer idea
From: Jonathan Lemon
Date: Sat, 28 Oct 1989 22:45
Date: Sat, 28 Oct 1989 22:45
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In article <1989Oct27.234823.483@mentor.com> mbutts@mentor.com (Mike Butts) writes: >Are closed-captioned TV programs captioned during commercials? If not, >detecting lack of captioning might be a means of detecting commercial >breaks. It is probably much easier to detect presence or absence of >captioning than to decode and display it, so such a device might be >simple. Perhaps the device might be simple, but unfortunately quite a few commercials are also captioned. Even if this is not the case, the station that is re-broadcasting the signal generally always has the captioning carrier signal present all the time. This is used to display other information on the other sidebands (known as TEXT/C1/C2 on the decoder) which has such information as an up-to-date tv guide, or news reports. -- Jonathan ...ucbvax!cory!jlemon or jlemon@cory.Berkeley.EDU
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!bionet!ig!ames!pasteur!cory.Berkeley.EDU!jlemon From: jlemon@cory.Berkeley.EDU (Jonathan Lemon) Newsgroups: sci.electronics Subject: Re: Commercial killer idea Message-ID: <18898@pasteur.Berkeley.EDU> Date: 28 Oct 89 22:45:05 GMT References: <1989Oct27.234823.483@mentor.com> Sender: news@pasteur.Berkeley.EDU Reply-To: jlemon@cory.Berkeley.EDU.UUCP (Jonathan Lemon) Organization: University of California, Berkeley Lines: 15