Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1994-08-03
1996-09-10
Nguyen, Viet Q.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369 54, 369122, 369 58, G11B 700
Patent
active
055552315
ABSTRACT:
Information represented by an arrangement of codes of three or more kinds is recorded on a recording medium having a track in the following manner. The codes of the information are caused to correspond to information pits of three or more kinds respectively. The information pit corresponding to each code is formed on the track so as to be arranged along the track. Each information pit is recognized by the length thereof along the longitudinal direction of the track and the distance between the center of the pit in the longitudinal direction of the track and a reference position determined by a reference clock.
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Canon Kabushiki Kaisha
Nguyen Viet Q.
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