| 摘要 |
The circuit for reproducing the data recorded by pit position method comprises a differential circuit (2) differentiating the reproducing signal of the pit recorded on an optical disc (6), a pulse generator (3) detecting the data with tangent and level of the differentiated signal, a comparator (4) providing pulse signal by comparing the reproducing signal to the reference voltage (Vref), and a delay circuit (5) compensating the delayed time of the reproducing signal of the differential circuit.
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