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Rockbox mail archiveSubject: Re: Sync problems in grayscale lib?Re: Sync problems in grayscale lib?
From: Matthias Wientapper <m.wientapper_at_gmx.de>
Date: Sun, 23 May 2004 13:23:21 +0200 Tobi wrote: > Hello, > > I have an Archos Recorder with USB 2.0. All applications, that uses the > grayscale lib have some sort of a display error. It seems like a problem > with the lcd timing. A gray bar goes all along from the top of the > display to the bottom. It looks like you film a television. Is this a > common problem? Hi Tobi, this is because of a missing v-sync scheme of the display. Jukebox clock and display refresh rate are not synced. Grayscale refresh rate is somewhat really close to the display's framerate and tends to drift due to temperature effects/tolerances of the LCD timing oscillator. That drift causes bars/artefacts wandering along your screen. Your assumtion with an lcd timing issue is right. /mattzz -- For every complex problem, there is a solution that is simple, neat, and wrong. H.L. Mencken (1880-1956) _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockboxReceived on 2004-05-23 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |