Optical traffic control system with burst mode light emitter

Details Optical traffic control system with burst mode light emitter Optical traffic control system with burst mode light emitter

2011-05-31

2011-05-31

Nguyen, Tai T (Department: 2612)

Communications: electrical

External condition vehicle-mounted indicator or alarm

Transmitter in another vehicle

C340S903000, C340S904000, C340S905000, C340S906000, C340S907000, C340S924000, C340S926000, C340S994000, C340S995170, C398S103000, C398S106000, C398S115000, C398S118000, C398S151000, C701S117000, C701S201000, C701S202000, C701S207000, C701S208000

Reexamination Certificate

active

07952491

ABSTRACT:
Various approaches for a traffic control preemption system that includes a receiver, a light emitter, and control circuitry. The receiver includes a photodetector and circuitry that produces a number of electrical pulses in response to each detected light pulse. For each detected light pulse the number of electrical pulses represents a level of radiant power of the light pulse, and a threshold number of electrical pulses and an activation frequency at which the threshold number of electrical pulses is repeated activates preemption. The control circuitry is coupled to the light emitter and controls the light emitter to emit bursts of light pulses. Each burst includes at least two light pulses and a frequency of light pulses in each burst and a frequency of the bursts cause the receiver to produce at least the threshold number of electrical pulses at the activation frequency and activate the preemption.

REFERENCES:
patent: 5014052 (1991-05-01), Obeck
patent: 5187476 (1993-02-01), Hamer
patent: 6064319 (2000-05-01), Matta
patent: 6326903 (2001-12-01), Gross et al.
patent: 7429917 (2008-09-01), Fredericks et al.
patent: 2006/0273926 (2006-12-01), Schwartz

Affiliated with

Also associated with

Rating

Optical traffic control system with burst mode light emitter 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 traffic control system with burst mode light emitter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical traffic control system with burst mode light emitter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2663760