APPARATUS AND METHOD FOR OPTICAL REPRODUCTION, APPARATUS AND METHOD FOR OPTICAL RECORDING, AND MEDIUM

摘要

PROBLEM TO BE SOLVED: To restrict generation of troubles when an optical disk records and rotate the optical disk at high speed by detecting a rotation speed of a recording medium and irradiating the recording medium with a light of a determined optimum read power. SOLUTION: A microcomputer 20 for control reads out an amplification factor for RF signals, an amplification factor for FE signals and an offset value of the FE signals from a memory 21 and sets the values to an RF process part 17. The RF process part 17 generates RF signals and FE signals on the basis of the set amplification factors. The microcomputer 20 controls a laser control part 16 to project a laser light of a read power (P1) at a rotation speed time from an optical pickup 11 to the signal face of an optical disk 3, and sets the amplification factor. Then, a laser light higher than the read power (P1) is emitted to the optical disk 3 to set the amplification factor of the RF process part. Correct reproduction with the read power at a high double speed is carried out accordingly.