Miscellaneous active electrical nonlinear devices – circuits – and – External effect – Light
Patent
1997-07-28
1999-08-10
Cunningham, Terry D.
Miscellaneous active electrical nonlinear devices, circuits, and
External effect
Light
250214R, 356218, H01L 3100
Patent
active
059364572
ABSTRACT:
A converter for providing an electrical signal according to the status of a light spot applied thereto, comprises: a sensor for sensing the light spot and generating a position current according to the position of the light spot sensed thereat; and an operating circuit for providing the sensor with an operating current when the light spot is sensed by the sensor and for outputting a status current corresponding to the operating current. The sensor comprises two electrodes each providing a current with magnitude determined according to the distance between it and the position of the light spot sensed thereat. The position current is obtained by subtracting the first electrode current from the second electrode current. A pulse width modulator characterized by a narrow pulse generator is further included to output a sequence of pulses each with pulse width determined according to the position current and with cycle period determined according to the period of a sequence of narrow pulses generated by the narrow pulse generator.
REFERENCES:
patent: 5561287 (1996-10-01), Turner
patent: 5572074 (1996-11-01), Standley
patent: 5748303 (1998-05-01), Korta
patent: 5773816 (1998-06-01), Grodevant
patent: 5793230 (1998-08-01), Chu et al.
patent: 5804997 (1998-09-01), Nishizono
U.S. Serial No. 08/880/866, filed Jun. 23, 1997, "Pulse Width Modulator Based on Detecting Difference of Light Beams," Liao and Chang.
U.S. Serial No. 08/762,955, filed Dec. 10, 1996, "Two Light Intensities Difference Convert Into Frequency Modulator For Parallel Photodiodes".
U.S. Serial No. , filed Jun. 10, 1997, A Devise and Method Capable of Converting a Position Signal into a Frequency Signal using a Photoelectric Position Sensitive Detector, Liao, et al.
Chang Chun-Ming
Liao Tai-Shan
Cunningham Terry D.
Hasanzadah Maria
National Science Council
LandOfFree
Light spot position-to-pulse width converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Light spot position-to-pulse width converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light spot position-to-pulse width converter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1123745