| 摘要 |
An apparatus and method for discriminating an optical disk includes a spindle motor for rotating the optical disk, an optical pickup device for picking up data recorded the disk, a servo signal processor for processing signals for tracking and focus servo of the optical pickup device by a prescribed control signal, and driving the spindle motor by an output signal of a digital signal processor. The digital signal processor shapes a track zero cross signal picked up from the optical pickup device to a logic waveform. A controller controls the operation of the digital signal processor, stores an optical disk discriminating reference value, generates a gate pulse when the disk is mounted, and compares a counted value of the track zero cross signal with the optical disk discriminating reference value to discriminate the type of disk being used. A counter is provided for counting the track zero cross waveform-shaped signal from the digital signal processor during a uniform velocity interval.
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