12 April 1985 Improvement Of Focusing And Tracking Servos In Optical Disk Memory
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Proceedings Volume 0529, Optical Mass Data Storage I; (1985) https://doi.org/10.1117/12.946445
Event: 1985 Los Angeles Technical Symposium, 1985, Los Angeles, United States
Abstract
In a single beam read-write optical head, an astigmatic method using a cylindrical lens and a push-pull method are adopted for focusing and tracking error sensing, respectively. The disturbances for the servo sensing signals when the optical head records and reads along a pregrooved track, which has the depth of X/8 and is locally intermittent for address code, are compensated by signal processing technology.
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Osamu Ito, Osamu Ito, Kyosuke Yoshimoto, Kyosuke Yoshimoto, Isao Watanabe, Isao Watanabe, Takahiro Kubo, Takahiro Kubo, } "Improvement Of Focusing And Tracking Servos In Optical Disk Memory", Proc. SPIE 0529, Optical Mass Data Storage I, (12 April 1985); doi: 10.1117/12.946445; https://doi.org/10.1117/12.946445
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