I'm looking for a line selector, to select the different lines in a PAL video signal.
Have somebody a link, or a schematic for me? But it must be a digital type, becouse I need to select the same line more times... and to count up to the 425. line ...... :-(
It's an AVR based selector, but i can't buy the AVR used in this project... Can somebody help me, to implement the source code into an other PIC, or AVR controller?
There was some so called "3-chip design" descrambler with 16c54 PIC...
it locks to a video signal with PLL in software (port output controls 20MHz VCXO). Easily to to integrate some "generate trigger on line #" since the firmware most of the time spends counting lines...
Should be easy to find with google...
What you mean by counting up to 425th line?
Either 625 lines for PAL or 525 lines for NTSC (o;
Second : I remember an old project from elektor, maybe in 1990 - 1991, using a lm1881 without microcontroller : "video line selector". If some one has this article.