Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1983-08-12
1985-12-10
Cardillo, Jr., Raymond F.
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
369110, 360114, 360 59, G11B 532, G11B 1110
Patent
active
045584400
ABSTRACT:
A device for reading magnetically recorded patterns on a magnetic recording medium includes a first system for causing a light beam polarized in a predetermined direction to enter the recording medium, a second device for relatively varying the ratio of the polarized component in the predetermined direction and the polarized component in a direction perpendicular thereto, of the light of said light beam reflected or transmitted by the recording medium, and a third device including a photodetector and an amplifier for amplifying a detection signal, the third device being for detecting the light beam from the second means and reading the recorded patterns on the magnetic recording medium, the second device being set so that the SN ratio of the detection signal becomes maximum.
REFERENCES:
patent: 3969573 (1976-07-01), Bouwhuis et al.
patent: 4409631 (1983-10-01), Matsumoto
NHK Laboratories Note 285, Feb. 1983.
Chen et al., MnBi Films: Curie Point Writing, 1970, J. of Applied Physics, vol. 41, No. 6, 1970, pp. 2530-2534.
Bowler Alyssa H.
Canon Kabushiki Kaisha
Cardillo, Jr. Raymond F.
LandOfFree
System for recording patterns of magnetically recorded informati does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for recording patterns of magnetically recorded informati, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for recording patterns of magnetically recorded informati will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-63013