Optical pickup using split beams impinging on different photodetector areas
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United States of America Patent
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Jan 30, 1996
Issued Date -
N/A
app pub date -
Jul 14, 1994
filing date -
Feb 28, 1985
priority date (Note) -
Expired
status (Latency Note)
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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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