Moving-body detecting image sensor

Details Moving-body detecting image sensor Moving-body detecting image sensor

2007-07-10

2007-07-10

Bali, Vikkram (Department: 2624)

Image analysis

Applications

C250S206100, C356S003080

Reexamination Certificate

active

10445654

ABSTRACT:
Two photodetectors output electric signals based on the detection of light at light receiving sections mutually spaced apart. The output signal of one of the photodetectors is delayed and a first pulse signal is generated, and second pulse signal having no delay is generated according to based on the detection signal of the other of the two photodetectors. A detection signal is output when the pulse signals overlap. According to whether the detection signal is output, a movement direction and speed of a moving body that moves between the light receiving sections are detected.

REFERENCES:
patent: 4140060 (1979-02-01), Brenner
patent: 4292672 (1981-09-01), Southgate
patent: 4480192 (1984-10-01), Albrecht et al.
patent: 4502134 (1985-02-01), Kondo et al.
patent: 7024111 (2006-04-01), Knox et al.
patent: 2003/0147653 (2003-08-01), Pescod

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