Device and method for recording information on a disk

DETAILED DESCRIPTION An object of the present invention is to provide a device and method for recording information on a disk wherein the disk is rotated at a constant speed to generate record timing signals having frequencies proportional to the radial position of the disk, and information is recorded synchronized with the record timing signals.
According to the device and method for recording information on a disk of the present invention makes it unnecessary to change the spinning frequency of the optical disk for every track, thus enabling the motor control circuit to be made simpler and the access time to be shorter.
To achieve the above object, there is provided a device for recording information on a disk in a concentric or spiral manner comprising motor 5 for rotating the disk 3 at a constant speed; a head 7 for recording and/or reproducing information on and from the spinning disk 3; a position detector means 17 connected to the head 7 for detecting the position of head 7; a position signal generator 19 electrically connected to the position detector means 17 for generating positional signals; a record timing signal generating means 28 electrically connected to the position signal generator for generating record timing signals having frequencies proportional to the radial position of disk; wherein the head 7 is electrically connected to the record timing signal generating means 28 and information are recorded and/or reproduced synchronizing with the record timing signals.