Noise component reduction in the data signal and optical scannin

Details Noise component reduction in the data signal and optical scannin Noise component reduction in the data signal and optical scannin

1993-08-12

1995-05-16

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 13, 369 4441, 369124, G11B 713, G11B 7135, G11B 2024

Patent

active

054167647

ABSTRACT:
A system for reducing noise in a data recording/play-back device includes an optical system for scanning a recording medium and providing first and second polarization signals. The polarization signals are added to provide an added signal. The added signal is differentiated to provide a noise reduction signal. The polarization signals are substracted to provide a difference signal. The differentiated signal is substracted from the difference signal to provide a data signal having a substantially reduced noise level.

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