I have to agree with everyone else, here, in that it's totally unclear what you want.

First of all, if this is VIDEO, what do you mean by that? Is it NTSC, PAL, SECAM, RGB, or what?

You say, "I don't use CRT but shift register and flip-flop for clocking of data." Well, nearly every application I can imagine that defines the video image at all in terms of pixels, as you apparently wish to do, does, indeed, define those pixels by means of a shift register and dot-clock of well defined frequency.

You refer to verTical and horizontal sync, however, which you'd not need if you were not using a CRT. AN LCD certainly won't need those sweep-circuit controls.

Perhaps it would be a good idea if you narrowed the scope of your question. Further, if you wish to ask questions about a specific application circuit, it would certainly be a good idea to post a link to a readable schematic of the circuit.

Many years ago, Don Lancaster published a series of books dealing with "cheap video." Perhaps a look at those would shed some light on your problems. I don't have any links to those items, since they so old, but maybe you can search them up on the web.

good luck,

RE