Article View: uk.tech.digital-tv
Article #159Re: Using an FM-Carrier for the Y [Luminance] Signal -- how to relieve the bandwidth issue?
From: Sjouke Burry
Date: Tue, 25 Sep 2007 20:47
Date: Tue, 25 Sep 2007 20:47
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Brian Gregory [UK] wrote: > "Green Xenon [Radium]" <glucegen1@excite.com> wrote in message > news:46f86fa7$0$9596$4c368faf@roadrunner.com... >> Couldn�t the video signal first be converted to QAM, multiple-level >> quadrature modulation, and/or constellation modulation and then >> transmitted on a FM radio carrier? >> >> AFAIK, the QAM/multiple-level-QM/ constellation-modulation version of the >> video signal won�t require as much bandwidth as the original video signal. >> The original video signal is first converted to bits and symbols and then >> transmitted on an FM radio carrier. To make the best use of bandwidth, >> limit the baud to only 1-symbol-per-second but pack as many >> bits-per-symbol as feasible. > > Why????? > > Why make it use more bandwidth by introducing totally superfluous FM > modulation?? > > I'm beginning to think you are a troll. > Stop wondering, he IS a troll, asking wrong,silly questions, and crossposting all over the place, hoping to score from people who think the questions are legit.
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X-Google-Thread: f928c,7e05cb8426dfb96 X-Google-Thread: 1133a5,7e05cb8426dfb96 X-Google-Thread: 115947,7e05cb8426dfb96 X-Google-Thread: 1118be,7e05cb8426dfb96 X-Google-Thread: ffcae,7e05cb8426dfb96 X-Google-Thread: 107cee,7e05cb8426dfb96 X-Google-Thread: f508e,7e05cb8426dfb96 X-Google-Thread: f7d8a,7e05cb8426dfb96 X-Google-Thread: fdad6,7e05cb8426dfb96 X-Google-Attributes: gidf928c,gid1133a5,gid115947,gid1118be,gidffcae,gid107cee,gidf508e,gidf7d8a,gidfdad6,public,usenet X-Google-Language: ENGLISH,CP1252 Path: arc1-ca.pugleaf.net!g2news2.google.com!news4.google.com!feeder1-2.proxad.net!proxad.net!feeder1-1.proxad.net!club-internet.fr!feedme-small.clubint.net!newsfeed.freenet.de!novso.com!zen.net.uk!dedekind.zen.co.uk!newsfeeder.wxs.nl!divide.nova.planet.nl!posting.nova.planet.nl!not-for-mail Date: Tue, 25 Sep 2007 22:47:04 +0200 From: Sjouke Burry <burrynulnulfour@ppllaanneett.nnlll> Organization: retired User-Agent: Thunderbird 2.0.0.6 (Windows/20070728) MIME-Version: 1.0 Newsgroups: uk.tech.digital-tv,rec.video.production,uk.media.tv.misc,sci.electronics.components,uk.tech.broadcast,sci.electronics.misc,aus.radio.broadcast,ba.broadcast,alt.radio.broadcasting Subject: Re: Using an FM-Carrier for the Y [Luminance] Signal -- how to relieve the bandwidth issue? References: <46f86fa7$0$9596$4c368faf@roadrunner.com> <h9CdnSQtq9z-7GTbnZ2dnUVZ8t2snZ2d@pipex.net> In-Reply-To: <h9CdnSQtq9z-7GTbnZ2dnUVZ8t2snZ2d@pipex.net> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Lines: 24 Message-ID: <46f973c7$0$25490$ba620dc5@text.nova.planet.nl> NNTP-Posting-Host: 84.80.235.244 X-Trace: 1190753223 text.nova.planet.nl 25490 84.80.235.244:37069 X-Complaints-To: abuse@planet.nl