Back to results
US 6,486,484 B1Granted
Pulsed optical couplers
AssigneeIntel Corporation
InventorPhilip W. Doberenz
Life of this patent
Estimating the term…
Abstract
A pulsed photoemitter circuit may be arranged to expose a pulsed photodetector circuit. Both the photoemitter and the photodetector circuits may be exposed to a pulsed signal which may be effective to improve the response time of the photoemitter/detector pair. In one embodiment of the present invention, the phototransistor load is coupled to a photoemitter control signal.
Claims8
An optical coupler comprising:
- a photoemitter circuit to provide photoemissions;
- and
- a photodetector circuit electrically coupled to said photoemitter circuit to provide an output at a level, wherein said photoemitter and photodetector circuits are pulsed by a repetitive negatively pulsing signal to detect the photoemissions from said photoemitter circuit, each pulse of said repetitive negatively pulsing signal to restart the output from the photodetector circuit at the level reached in the output of a previous pulse.
A method comprising:
- providing a photoemitter circuit to emit energy;
- electrically coupling a photodetector circuit to said photoemitter circuit to provide an output at a level;
- and
- using a repetitive negatively pulsing signal to pulse said photoemitter circuit and said photodetector circuit to detect said energy, each pulse of said repetitive negatively pulsing signal to restart the output from the photodetector circuit at the level reached in the previous pulse.
1 more element
Dependencies are inferred from the claim text.