Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1986-02-28
1988-11-15
Cardillo, Raymond F.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
369 44, 369 41, G11B 2108, G11B 2110, G11B 709
Patent
active
047854391
ABSTRACT:
An optical recording/reproducing apparatus includes a pickup with a laser light source, an objective lens and lens drive coil for moving the optical axis of the laser beam transmitted through objective lens, a carriage drive voice-coil motor for moving a carriage with the pickup mounted thereon to move the laser beam transmitted through the objective lens, and tracking apparatus for operating both the lens drive coil and the carriage drive voice-coil motor. The tracking apparatus includes a lens servo stable detecting device for detecting that the laser beam from the objective lens has reached a desired track, apparatus for turning on a servo control loop with the lens drive coil in response to a tracking instruction, and apparatus for turning on a servo control loop with the carriage drive voice-coil motor in response to a detection output from the lens servo stable detecting device.
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Ikeda Yoshiaki
Ohshima Ken
Okada Hiroo
Cardillo Raymond F.
Garland Steven R.
Olympus Optical Co,. Ltd.
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