OPTICAL DISC DEVICE

摘要

As shown in Fig. 1 and Fig. 2, an optical disc device includes: a high-frequency band processing circuit for removing a low-frequency component of a signal output from each light receiving element of a pickup, performing AD conversion by a high-speed low-bit AD converter, and after this, generating various signals required for recording/reproduction of the optical disc by digital processing; and a low-frequency band processing circuit for removing a high-frequency component of a signal output from each light receiving element of the pickup, performing AD conversion by a low-speed high-bit AD converter, and after this, generating various signals required for recording/reproduction of the optical disc by digital processing. Thus, by using a single circuit, it is possible to generate various signals required for recording/reproduction of an optical disc, thereby reducing the product cost, power consumption, and the circuit size.