AnsweredAssumed Answered

ADV7180 not a clear picture on the edges of the image

Question asked by loki_amorf on Mar 26, 2018
Latest reply on Mar 26, 2018 by GuenterL

Hello.

The developed device has ADV7180BST48Z (input CVBS and output BT656)->FPGA(Chroma resampler -> YCrCb to RGB converter -> Deinterlacer -> Scaler (PAL 720x576 to 1024x768) ->Framebuffer-> Output to LCD (LVDS))->LCD screen.
The scheme is approximately like attached, difference in type of package type. I know that there are insignificant differences in terms of the nominal values. Everything works fine, but there is a problem with the lack of clarity of the edges on video image. We have the same system with NXP SAA7111, it has not such problem. I attached an example of compare two images.

 

Please, help me to resolve this problem.

If necessary, I can give an example of the initialization of i2c.

Attachments

Outcomes