Motion detection solid-state imaging device

Details Motion detection solid-state imaging device Motion detection solid-state imaging device

1998-01-13

1999-11-23

Allen, Stephone

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

348220, H01L 2700

Patent

active

059904712

ABSTRACT:
A motion detection solid-state imaging device of the present invention includes a plurality of photoelectric converters arranged in a matrix to form a receiving field, the device detecting motion of an image based on signals from the photoelectric converters. First and second photoelectrics of the plurality of photoelectric converters which are spatially adjacent to each other are treated as a set. A first light integration period of the first photoelectric converter is shorter than a second light integration period of the second photoelectric converter, while the first and second light integration periods end substantially at a same point of time. The signals from the first and second photoelectric converters are both read out after the first and second light integration periods. A product of a ratio of the second light integration period with respect to the first light integration period and the signal from the first photoelectric converter is obtained so as to detect motion of the image based on a difference between the product and a signal from the second photoelectric converter.

REFERENCES:
patent: 4901143 (1990-02-01), Uehara et al.
B. Ackland, et al., IEEE International Solid-State Circuits Conference TA 1.2 (1996), pp. 22-25.
A. Dickinson, et al., IEEE International Solid-State Circuits Conference TP 13.5 (1995), pp. 180-181, 226-227.

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