With the recent discussions on OSD chips and video, I wondered if
anybody had a cheap solution for producing a mirrored video image.
Normal TVs scan from left to right. I have a TV that is used in trucks
as a backup monitor. It scans from right to left to give the driver the
feeling he is looking in a mirror. I'd like to put some text on the screen
with an OSD chip, but everything looks like the front of an ambulance ;-).

Does anybody know of an OSD chip that has a user definable character
set or can spit out the image in reverse?

So far the best way I have come up with is to store the backwards text
bitmap in some kind of memory and have a PIC or PLD spit it out a bit
at a time (only need white letters). Then have a MUX switch between
a white dot or the incoming picture. Timing can be generated by an
Elantec EL4583 or something. Anybody know of an example circuit
similar to this? (Besides the INK 32 weather station article). What is
a good type of memory for this, VRAM?

Any other suggestions are appreciated.

Chris