Track jump control means for a disk apparatus

• Main Authors: NAKAJIMA; YOSHIKI, KOBAYASHI; YUTAKA, YAMANA; KOJI, MASHIMO; AKIRA, ONDA; HIROYUKI, ITO; OSAMU, KOYANAGI; KIMIYUKI, YOSHIMOTO; KYOSUKE
• Format: Patent
• Language: English
• Published: 02.01.1996
• Edition: 6
• Subjects: INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; PHYSICS

The disk drive apparatus of the present invention has an optical pickup that jumps a track to perform track jumping when a jumping voltage is impressed, and that traces a track by performing brake operation when a braking voltage is applied, and actuator that drives the optical pickup, a signal processing part that performs focus and tracking control with respect to the optical pickup, a movement time measurement part that measures the movement time when a light beam emitted from the optical pickup is moved to cross a track to a required track, a voltage control part that uses the results of measurement to generate parameters and a voltage value that is applied to the actuator, a storage part that stores voltage value that is generated by the voltage value setting part, and that after a disk is loaded, first stores data of that disk in the storage part and uses those data values according to the track jump operation.