19-08-2019, 11:30 AM
Hi Jeffery
Well spotted.
I had read over that but seen "digitized S-video luminance" and discounted it. Worth jiving it a try at some stage.
I have been thinking about Hedghog II.
It has no framestore and I cant use a PLL to generate the output clock from as the video clock from the video decoder is too jittery.
But I was thinking of trying to lock the output clock by counting the number of output pixels in a full frame and keep it at a constant 864 X 405 = 349920 by adjusting the DTO coefficient.
Too many pixels reduce the coefficient, too few increase the coefficient. Better still count the oversampling clock which is pixel frequency X 4.
It might be worth a try sometime.
Frank
Well spotted.
I had read over that but seen "digitized S-video luminance" and discounted it. Worth jiving it a try at some stage.
I have been thinking about Hedghog II.
It has no framestore and I cant use a PLL to generate the output clock from as the video clock from the video decoder is too jittery.
But I was thinking of trying to lock the output clock by counting the number of output pixels in a full frame and keep it at a constant 864 X 405 = 349920 by adjusting the DTO coefficient.
Too many pixels reduce the coefficient, too few increase the coefficient. Better still count the oversampling clock which is pixel frequency X 4.
It might be worth a try sometime.
Frank
