Optical recording/reproducing apparatus including a semiconducto

Details Optical recording/reproducing apparatus including a semiconducto Optical recording/reproducing apparatus including a semiconducto

1995-11-01

1997-03-04

Epps, Georgia Y.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369 4437, 369122, 372 50, 257 82, G11B 700

Patent

active

056087160

ABSTRACT:
An optical recording/reproducing apparatus comprises a semiconductor laser having a plurality of radiative portions formed at different heights on a same substrate and a spot forming system for arranging beams from the plurality of radiative portions in the semiconductor laser to form a plurality of light spots on an information recording medium for effecting information record and reproduction. In the apparatus, the spot forming system concurrently forms a first recording light spot and a first reproducing light spot on a first information track on the information recording medium and concurrently forms a second recording light spot and a second reproducing light spot on a second information track different from the first information track on the information recording medium.

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