With dedicated OSD IC becoming increasingly rare we require a simple minimum chip count OSD to replace the functionality of these IC.
Preferably either Microchip or FPGA based the project should take a standard video signal 1Vpp and overlay txt on top of it.
Text should be ideally 28 char x 12 rows
Text should be white with a small black border on each letter to make it easier to see on a white background.
Text to be input via serial, TTL 5V levels. Control codes to be agreed.
Will require buffering within the processor for seamless changes when txt is added or removed.