Optical pickup using split beams impinging on different photodet

Details Optical pickup using split beams impinging on different photodet Optical pickup using split beams impinging on different photodet

1994-07-14

1996-01-30

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4423, 369 4438, 369 4437, 369107, G11B 700, G11B 1100

Patent

active

054885981

ABSTRACT:
An optical pickup apparatus having a photo-detection unit having a plurality of detectors, a unit for converting a light beam emitted from a recording medium on which information is magnetically recorded and intensity-modulated, and splitting the light beam into two beams guide them respectively onto different areas of the photo-detection unit, and a device for processing outputs from each area of the photo-detection unit to provide an information signal.

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