Patent ID: 6181655
Filing Date: 2001-01-30
Classification: G11B

Abstract:
An optical disc drive comprising:a signal reading arrangement that reads a signal from an optical disc;a recording arrangement that records information to the optical disc;a clock reproducing arrangement that reproduces a first clock from a reproduction signal read by the signal reading arrangement;an address reproducer that reproduces an address from the reproduction signal read by the signal reading arrangement;a reference clock generator that generates a second clock, which is used as a reference for recording;a first counter that counts a length of one sector on the optical disc using the first clock, wherein said first counter is preset to a specific count when the address reproducer reproduces an address;a second counter that counts a length of one sector on the optical disc using the second clock, wherein said second counter is preset to a specific count when the address reproducer reproduces an address;a generator that generates a first disc rotation state signal when the disc rotation is out of a specific speed, and a second disc rotation state signal when the disc rotation is at said specific speed; anda timing signal generator that generates a timing signal for controlling operation of the recording arrangement and clock reproducing arrangement using counter output from the first counter when said first disc rotation state signal is produced and the second counter when said second disc rotation state signal is produced.