System for recording optical discs for use with optical disc playback only devices

摘要: An optical disc recording system can record data on a writable type and reproduce the recorded by utilizing playback device adapted exclusively for playing back standardized unwritable such as Compact Disc. The comprises medium device. consists of an having its surface made material which is with semiconductor laser has relatively high rate beam reflection, mechanical size like or compatible standard only pregroove small depth. signal outputting circuit input to be at predetermined transfer speed mark length format only, drive control driving controlling positions so track pitch irradiation state in accordance output circuit. played only.