Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1993-03-17
1994-10-11
Dzierzynski, Paul M.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369121, G11B 700
Patent
active
053553608
ABSTRACT:
A laser beam controller of a semiconductor laser generator to read, write, and erase an information signal on a recording medium. Includes a generator of a variable-strength laser beam to read, write and erase the information signal on the recording medium; a first power supply of a first current to generate a laser beam to read the information signal; a second power supply of a second current to generate a laser beam to write or erase the information signal; and a controller circuit of the first and the second power supply. The controller circuit includes; a) a first sampling circuit of a first value of the first current; b) a comparator of the first value with a predetermined reference value; c) a current adjusting circuit of the first current according to a result of the comparison of the first value with the predetermined first reference value; d) a second sampling circuit of a second value of the first current after the first current is adjusted by the current adjusting circuit; and e) a holding circuit of the second value of the first current so that the controller circuit controls the first power supply to supply the first current at the second value to the generator. In this laser beam controller, the controller circuit controls the second power supply according to the second value of the first current so that the second supplying supplies the second current to the generator.
REFERENCES:
patent: 5134606 (1992-07-01), Sekiguchi et al.
patent: 5251199 (1993-10-01), Utsumi et al.
Dzierzynski Paul M.
Konica Corporation
Nguyen Kiel T.
LandOfFree
Semiconductor laser controlling apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Semiconductor laser controlling apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor laser controlling apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1664482