Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2005-11-22
2005-11-22
Hindi, Nabil (Department: 2655)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S112010, C369S044370
Reexamination Certificate
active
06967919
ABSTRACT:
An optical head for reproducing information contained on an optical information disk includes a plurality of light sources and a plurality of light receiving elements in correspondence with the plurality of laser light sources. There is constructed a constitution in which one laser light source in the plurality of laser light sources is constituted by an individual laser diode and which includes a laser module constituted by other laser light sources and the plurality of light receiving elements to thereby enable to realize the small size of the optical head.
REFERENCES:
patent: 5696749 (1997-12-01), Brazas et al.
patent: 5875167 (1999-02-01), Katayama
patent: 09-274730 (1997-10-01), None
patent: 11-306581 (1999-11-01), None
Arikawa Kouji
Nakamura Shigeru
Shigematsu Kazuo
Hindi Nabil
Hitachi , Ltd.
Townsend and Townsend / and Crew LLP
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