TV camera scanner

TV camera scanner

[tē′vē ¦kam·rə ‚skan·ər]
(computer science)
In optical character recognition, a device that images an input character onto a sensitive photoconductive target of a camera tube, thereby developing an electric charge pattern on the inner surface of the target; this pattern is then explored by a scanning beam which traces out a rectangular pattern with the result that a waveform is produced which represents the character's most probable identity.