Optical recording/reproducing apparatus

Details Optical recording/reproducing apparatus Optical recording/reproducing apparatus

1989-05-01

1992-04-21

Envall, Jr., Roy N.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 32, 369 4436, 369 4431, 369 4435, G11B 700

Patent

active

051074796

ABSTRACT:
An optical recording/reproducing apparatus records an information signal on a rotary optical disk by irradiating an optical beam having an optical power such that an energy sufficient to cause recording of the information signal is incident to a unit area of the optical disk in a unit time while revolting to optical disk at a first predetermined speed, and plays back the information signal from the optical disk by irradiating the optical beam while revolving the optical disk with a second predetermined speed such that the energy incident to a unit area of the optical beam in a unit time at the time of playback does not cause recording on the optical disk.

REFERENCES:
patent: 4575835 (1986-03-01), Nishikawa et al.
patent: 4603412 (1986-07-01), Yamazaki
patent: 4611317 (1986-09-01), Takeuchi et al.
patent: 4651314 (1987-03-01), Yoshikawa et al.
patent: 4660189 (1987-04-01), Tsukamura et al.
patent: 4789975 (1988-12-01), Taniyama

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