Patent ID: 6163516
Filing Date: 2000-12-19
Classification: G11B,H03L

Abstract:
An optical disc reproduction apparatus for reproducing data from an optical disc using a constant linear velocity method, the optical disc reproduction apparatus comprising:an equalizer to receive a signal read from the optical disc, and equalizing the received signal according to an equalization control signal;a wide-capture range phase-locked loop (wide PLL) to receive the equalized signal, and to perform a phase lock operation with regard to the received equalized signal based on a phase lock control signal;an automatic adjuster to select one of predetermined phase lock control values, according to a type of the optical disc to be read and a reproduction velocity determined during initial operation, and a desired target position to read the data from the optical disc, and to generate the phase lock control signal having the selected phase lock control value; anda correction unit to select one of a predetermined first equalization control value and a second equalization control value which is generated by said wide PLL and relating to the phase lock operation, according to the desired target position, and to generate the equalization control signal having the selected equalization control value.