Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2007-08-28
2011-11-08
Young, Wayne (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S094000, C369S116000
Reexamination Certificate
active
08054731
ABSTRACT:
A photodetector comprising: a first light-receiving surface configured to receive reflected light of zero-order light generated based on a laser beam, from one information recording layer of a multilayer optical disc; a second light-receiving surface that is adjacent to the first light-receiving surface with a predetermined interval, the second light-receiving surface being configured to receive reflected light of diffracted light generated based on the laser beam, from the one information recording layer; and a third light-receiving surface for canceling out reflected light of the zero-order light from other information recording layer of the multilayer optical disc, received by the first light-receiving surface or the second light-receiving surface, the third light-receiving surface being configured to receive the reflected light of the zero-order light from other information recording layer.
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Nakano, Hiromasa (Japan);Application No. 2006-232172; Japanese Office Action dated Jun. 22, 2010—mailing No. 433600 (English translation) (3 pages).
Nakano, Hiromasa (Japan); Application No. 2006-232173; Japanese Office Action dated Jun. 22, 2010—mailing No. 433601 (3 pages).
Kawasaki Ryoichi
Shindo Hiroyuki
Bernardi Brenda
Fish & Richardson P.C.
Sanyo Electric Co,. Ltd.
Sanyo Optec Design Co., Ltd.
Young Wayne
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