Optical system for recording, reproducing, and/or erasing inform

Details Optical system for recording, reproducing, and/or erasing inform Optical system for recording, reproducing, and/or erasing inform

1987-09-22

1988-10-04

Richardson, Robert L.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 45, 369 46, 369109, 369275, G11B 700

Patent

active

047759658

ABSTRACT:
Disclosed in a system for recording, reproducing, and/or erasing information as recording pits on a recording medium. This medium has guide grooves for recording reproducing, and/or erasing the informatin signal. A condition whereby the value which is obtained by subtracting the groove width from the groove pitch is larger than a width of the recording pits is satisfied. A predetermined position for recording, reproducing, and/or erasing is set between the guide grooves. Alternatively, a condition whereby the width of a guide groove is larger than the width of a recording pit is satisfied. A predetermined position for recording, reproducing, and/or erasing is set on the guide groove.

REFERENCES:
patent: 4327430 (1982-04-01), Wada et al.
patent: 4607358 (1986-08-01), Maeda et al.
patent: 4703408 (1987-10-01), Yonezawa et al.
Spie, vol. 259, Optical Mass Data Storage, (1985), pp. 145-149.
Transaction of Applied Physics, (Japan), Spring 1986, 2a-H-2.

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