Optical recording system utilizing proportional real-time feedba

Details Optical recording system utilizing proportional real-time feedba Optical recording system utilizing proportional real-time feedba

1988-02-22

1990-03-13

McElheny, Jr., Donald

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

G11B 7125

Patent

active

049088157

ABSTRACT:
A system for optically recording information on a recording medium, such as a video disk, by pulse-code modulation (PCM). The medium includes a reflective and radiation-sensitive recordable stratum which changes optically in accordance with the signal being recorded. The signal is recorded on the medium by a slaved coherent light light beam whose intensity is controlled by the recording medium itself. The recording medium controls the recording beam power in a manner to reduce dropouts to a minimum and to assure fidelity in the recorded signal throughout a predetermined range of surface speeds of the medium despite irregularities in the recording stratum.

REFERENCES:
patent: 3696344 (1972-10-01), Feinleib et al.
patent: 4051329 (1977-09-01), Blondet et al.
patent: 4283785 (1981-08-01), Miyauchi et al.
patent: 4562567 (1985-12-01), Frankfort et al.
patent: 4583210 (1986-04-01), Winslow

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