Re: How to be sure a window has been repainted

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#1893

From: Jonathan Benedicto
Date: Wed, 30 May 2007 15:53

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Christophe MINETTI wrote:
> Yes it turns around 70 msec to get a "stable" image. Images are vertical 
> and
> horizontal grating and some full white screens. As I have to wait at least 
> 70 msec
> and then wait the next synchro top of the camera, I am decreasing the 
> acquisition
> frequency. If I decrease those 70 msec, than for sure I will get a mix of 
> two
> frames. I was hoping (but I think there is no way to get it) to know by 
> any way when
> the LCD has been completely refreshed ...

Maybe I'm way off here, but are you able to do something like this:

1. Send new frame to LCD
2. Pause for about 80ms.
3. Tell camera to grab frame.
4. Wait till camera has frame.
5. Goto 1.

Jon

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From: "Jonathan Benedicto" <invalid@nobody.com>
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Subject: Re: How to be sure a window has been repainted
Date: Wed, 30 May 2007 11:53:11 -0400
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