Optical disk playing apparatus and method for discriminating optical disk

摘要

An emission drive command is sent to the drive circuit, step 11, the focusing servo is switched on and the tracking servo is switched off, step 12, a command is formed to vibrate the objective lens, step 13 and a count-start command is sent to the edge counter, step 14, when it is determined if the count in a predetermined period exceeds a prescribed value, step 15, If yes, the disc is determined to be a compact disc, step 17, otherwise to be a digital video disc, step 18. An independent claim is included for a method of discriminating types of optical disc.