Optical pickup

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium

Reexamination Certificate

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Details

C369S047500, C369S116000

Reexamination Certificate

active

07417934

ABSTRACT:
An optical pickup used to record information on and/or reproduce information from an optical recording medium, the optical pickup including an optical module to emit a light beam; and a front photo-detector to monitor power of the light beam; wherein the optical module is coupled to the front photo-detector so that a fixed distance is maintained between the optical module and the front photo-detector.

REFERENCES:
patent: 5161040 (1992-11-01), Yokoyama et al.
patent: 5500846 (1996-03-01), Ophey
patent: 5600621 (1997-02-01), Noda et al.
patent: 5696749 (1997-12-01), Brazas et al.
patent: 5991255 (1999-11-01), Takahashi
patent: 6072607 (2000-06-01), Tajiri et al.
patent: 6577585 (2003-06-01), Aoyama et al.
patent: 2002/0009112 (2002-01-01), Nakata
patent: 4-155627 (1992-05-01), None
patent: 04332185 (1992-11-01), None
patent: 2001-052368 (2001-02-01), None
patent: 2001143305 (2001-05-01), None
patent: 2001-332799 (2001-11-01), None
Korean Office Action for application 2003-4839, 2 pp and English language notice to submit response for same.

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