System and method of optical data communication with...

Communications: electrical – Land vehicle alarms or indicators – Of relative distance from an obstacle

Reexamination Certificate

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Details

C340S436000, C340S903000, C180S167000, C180S169000, C342S042000, C342S070000, C701S301000

Reexamination Certificate

active

07009501

ABSTRACT:
The system and method of the present invention optically transmits redundant packets of data using infrared signals at pseudo-random intervals to allow a receiver to distinguish between multiple simultaneous sources. The emitters repeatedly transmit a short packet at randomized intervals much shorter than the frame rate. Statistical analysis shows that the probability of collision of the desired packet with a packet from some other source is sufficiently low such that timely reception of at least one uncorrupted packet in the required time frame is assured.

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patent: WO 01/95287 (2001-12-01), None

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