Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2011-07-26
2011-07-26
Edun, Muhammad N (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S044370, C369S112270, C369S112280, C369S112140
Reexamination Certificate
active
07986593
ABSTRACT:
An optical integrated device includes a light source; a light splitting-and-guiding section that splits a reflected light beam into two end light beams, a connection light beam, and a residual light beam, and guides the two end light beams and the connection light beam in directions different from a direction of the residual light beam; and a light receiving section that receives the two end light beams and the connection light beam with photodetection devices divided, in the tangential direction, into at least two regions within a range in which the connection light beam is incident, receives the residual light beam with photodetection devices divided, in the tangential direction, into regions having widths corresponding to portions on which the two end light beams are incident, and outputs a detection signal in accordance with an amount of light received with each of the photodetection devices.
REFERENCES:
patent: 6934228 (2005-08-01), Shimano et al.
patent: 7283439 (2007-10-01), Shimano et al.
patent: 2007-265595 (2007-10-01), None
Kanaya Midori
Kobayashi Takashi
Seo Katsuhiro
Edun Muhammad N
Sony Corporation
Wolf Greenfield & Sacks P.C.
LandOfFree
Optical integrated device, method for detecting light,... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical integrated device, method for detecting light,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical integrated device, method for detecting light,... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2720017