Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1993-09-28
1995-03-14
Dzierzynski, Paul M.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369120, 369 4441, G11B 713
Patent
active
053982282
ABSTRACT:
The present invention relates to a photo-detecting device which records/reproduces a signal such as visual information on/from an information recording device such as an optical disk, and more particularly to a structure of a photo detector that receives light reflected from the optical disk, and a method for processing the signal outputted therefrom, and it is an objective of the present invention to obtain a reproduced signal having a good SN ratio without any effect of other signals by a rather simple structure. In order to attain the above objective, a photo-detecting device according to the invention, which is of the type used with an optical system that uses a light beam to read information optically recorded on a recording device wherein the light beam is radiated on and reflected from the surface of the recording device, includes a photo-detecting device having a plurality of light receiving sections for receiving the light beam reflected from the recording device; a digitizing device for digitizing an output signal corresponding to the amount of the light outputted from each of the plurality of light receiving sections in accordance with a predetermined threshold level and a calculating device for repetitively taking a digitized signal outputted from the digitizing device by the frequency more than twice as many as the required maximum level thereof.
REFERENCES:
patent: 4464569 (1984-08-01), Reilly et al.
patent: 4958245 (1990-09-01), Roth et al.
patent: 5144616 (1992-09-01), Yasukawa et al.
patent: 5216562 (1993-06-01), Luecke et al.
patent: 5247510 (1993-09-01), Lee et al.
patent: 5278812 (1994-01-01), Adar et al.
patent: 5283778 (1994-02-01), Maeda
Chu Kim-Kwok
Dzierzynski Paul M.
Pioneer Electronic Corporation
LandOfFree
Photo-detecting device for reproducing information recorded on a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photo-detecting device for reproducing information recorded on a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photo-detecting device for reproducing information recorded on a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-717348