I'm looking for ideas on a video preamp. I have a Panasonic high-definition direct-view CRT, which looks just awesome. But it's video controls are global. If you set the brightness on a 480i input from CATV, you are changing the brightness for every other input, also. Worse, the black and white points must be set differently for each mode (480i, 480p, 1080i). I assume this is because the TV's input stage doesn't have the same response at higher bandwidth (1080i) as it does for 480i. Also the cable set-top-box I have doesn't have the proper video amplitude at 1080i. Last, the TV has no controls whatsoever when using the DVI input.
So these are the features I want:
So it would seem that I need a high-bandwith input, high-bandwidth video amps with programmable gain, a DVI chip, fast ADCs, a sync separator, fast output drivers, and a microcontroller to run the show.
It's a pie in the sky presently, but I'd like to have a preliminary design done by summer.
So these are the features I want:
- 3 component video inputs with enough bandwidth for 1080i
- Composite and S-Video inputs
- Component and DVI output
- Detection of video mode on inputs
- Gain adjustments, with memory for each input/mode combination
- Adjustments for scaling the DVI image, with memory
So it would seem that I need a high-bandwith input, high-bandwidth video amps with programmable gain, a DVI chip, fast ADCs, a sync separator, fast output drivers, and a microcontroller to run the show.
It's a pie in the sky presently, but I'd like to have a preliminary design done by summer.