| 摘要 |
An exemplary digital disc player includes a main control unit ( 21 ), a central processing unit ( 28 ) and a detecting circuit ( 24 ). The central processing unit includes a controller ( 282 ) and a first storage unit ( 283 ). The detecting circuit is configured for detecting a variation of a voltage of the main control unit and the central processing unit. When the power of the digital disc player is cut off, the detecting circuit generates a temporary direct voltage, the first storage storing track information of a digital disc. When the power of the digital disc player is turned on again, the main control unit addresses the track information from the first storage unit according to a control signal from the controller.
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