Optical disk apparatus with beam energy correction for deviation

Details Optical disk apparatus with beam energy correction for deviation Optical disk apparatus with beam energy correction for deviation

1984-07-05

1986-12-23

McElheny, Jr., Donald

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369116, G11B 7125

Patent

active

046317120

ABSTRACT:
An optical disk apparatus has an optical head. The optical head emits a light beam onto an optical disk and forms pits in the optical disk, thereby recording a signal. A detector detects the relative inclination between the optical head and the optical disk and generates a signal corresponding to this relative inclination. A beam intensity correction circuit corrects the intensity of the light beam in accordance with the relative inclination to form proper pits. In one embodiment, the intensity of the light beam is increased when the relative inclination is increased.

REFERENCES:
patent: 4051329 (1977-09-01), Blondet et al.
patent: 4093961 (1978-06-01), Kanamaru
patent: 4135206 (1979-01-01), Kleuters et al.
patent: 4162398 (1979-07-01), Kayanuma
patent: 4321700 (1982-03-01), Russell
patent: 4502134 (1985-02-01), Kondo et al.

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