Rockbox mail archiveSubject: Re: Sync problems in grayscale lib?
Re: Sync problems in grayscale lib?
From: BlueChip <cs_bluechip_at_webtribe.net>
Date: Sun, 23 May 2004 14:12:13 +0100
At 12:23 23/05/04, you wrote:
>>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
>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.
>For every complex problem, there is a solution that is simple, neat, and
>H.L. Mencken (1880-1956)
So whilst looking for that solution - how simple, neat or wrong would it be
to add a user-controllable refresh timer to the greyscale stuff?
Received on 2004-05-23