Optical recording apparatus

Details Optical recording apparatus Optical recording apparatus

1991-08-12

1992-05-05

Envall, Jr., Roy N.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 48, 369 59, G11B 700

Patent

active

051114437

ABSTRACT:
A pulse width adjustment circuit for an optical disk recording system selectively adjusts the width of pulses to be recorded in dependence upon an input control signal, which in turn is dependent upon the width of the pulse to be adjusted. In one embodiment a minimum bit length pulse is widened and all other pulses are narrowed. This is useful in recording on the inner portions of a CAV optical disk. In another embodiment a selectable control signal determines whether the minimum bit length signal is to be narrowed or widened.

REFERENCES:
patent: 4734900 (1988-03-01), Davie
patent: 4797872 (1989-01-01), Rokutan
patent: 4873680 (1989-10-01), Chung et al.
patent: 4937809 (1990-06-01), Miyadera et al.
patent: 4989196 (1991-01-01), Ishikawa et al.
patent: 4998237 (1991-03-01), Osakabe et al.

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