Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1989-04-21
1991-01-22
Psitos, Aristotelis M.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
372 33, 372 36, 357 80, G11B 700, H01L 3902
Patent
active
049875663
ABSTRACT:
In case that the light beam emitted from a light source mounted on a base element is focused to a spot light on a data storage media to write the data, when the light beam reflected from the data storage media to return to the light source is reflected from the base element and focused again on the data storage media, it becomes difficult to precisely read/write the data on the storage media. In order to resolve the above problem, a light beam treating means is provided in the base element to prevent the re-incident light beams from being reflected toward the data storage media and focused thereon.
REFERENCES:
patent: 4488304 (1984-12-01), Shimiyu et al.
patent: 4794607 (1988-12-01), Devlin
Iwata Kazuo
Kondou Mitsushige
Shikama Shinsuke
Toide Eiichi
Mitsubishi Denki & Kabushiki Kaisha
Psitos Aristotelis M.
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