Posted Sat Jan 21, 2012 3:29 PM
Alright, so I got this really awesome 3D LED tv (Vizio Razor M3D460SR) but since it's so thin or something they combined the AV input with the Component1 plugs (green is shared with the yellow composite plug) and Component2 with the VGA input (works with a VGA to component passthrough cable and an RCA to 3.5mm stereo cable). Is there anyone with really awesome video ciruitry skills that can help devise a custom external device to combat this?
A) S-Video to Component circuit - Doesn't need to upscale past 480i, but I'd like to keep the quality improvement from the S-Video connector instead of going S-Video -> RCA Composite
A-2) Composite to Component if A) is possible (for 3) below)
B) Some form of automatic switching between sources
Realistic goals / options
1) Input 1: Component + RCA Left/Right, Input 2: VGA Computer + 3.5mm Stereo, Output: VGA connector + 3.5mm Stereo
In other words, make a switch for a VGA -> Component passthrough and a normal VGA source. There's no conversion from Component to an actual VGA signal, the tv supports and has been tested with a Component to VGA cable.
2) Input: Component (Green, Blue, and Red plugs), Composite (Yellow), Output: Green, Blue, White
Explanation: A switch that cuts off Red and Blue when set to Composite, Yellow gets forwarded to Green. I've got an automatic switchbox that only outputs one set of RCA audio cables for both component and composite, so that's why that's not included.
3) Assuming A):
Input 1: S-Video + RCA Left/Right, Input 2: Composite + RCA Left/Right, Input 3: Component + RCA Left/Right, Input 4: VGA + 3.5mm Stereo, Output: VGA connector + 3.5mm Stereo
On Input 2: Left mono to Stereo when Right In connector has no signal
VGA passthrough switch as in 1)
Assuming B) as well:
If there is a signal on Input 4, leave it on 4 unless manually switched. If there is no signal, switch to VGA -> Component passthrough
For inputs 1, 2, and 3 switch to the input that has received a signal last. ie: Input 1 is on, input 3 is turned on switch to input 3, input 2 is turned on switch to input 2. (same function as the switch box I have now)