Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1992-06-16
1994-03-01
Dzierzynski, Paul M.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369 43, 369 32, 369127, 369137, 3692751, 369276, 369 13, 360 18, 360 55, 360 64, G11B 700
Patent
active
052914720
ABSTRACT:
High density recording systems and methods are disclosed which employ a radiation beam to form spot-like recordings in record members such as discs, tapes and cards. The angle, offset or cross-sectional shape of the recording beam can be varied so as to vary the angle, offset or shape of the corresponding recordings in the record member. The recorded information can be electro-optically or magnetically detected and discriminated from each other to provide high density recordings of alphanumeric characters or digital data. Enhanced detection scanning is effected by ultrasonically vibrating the laser or an optical element, such as a prism or mirror receiving the reading light beam, in a manner to cause it to scan back and forth laterally to the record track as a longitudinal scanning movement is effected parallel to the longitudinal axis or centerline of the track. The reflected light is detected, computer processed and analyzed to effect proper detection of the recordings to generate correct data therefrom.
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Chu Kim-Kwok
Dzierzynski Paul M.
Lisa Steven G.
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