Disk recording and reproducing apparatus with speed compensation for CAV and CLV disks in accordance with signals recorded on the disks

摘要

For a disk recording and/or reproducing apparatus which may use either constant angular velocity or constant linear velocity disks, speed compensation circuitry is provided which operates in accordance with RF signal information recorded on a surface of a disk. Irrespective of the nature of the disk being used (CAV or CLV), comparison circuitry within the apparatus provides reliable speed detection and compensation.