US 2015/0319341 A1 · MOTION DETECTION SOLID-STATE IMAGE CAPTURING DEVICE AND MOTION DETECTION SYSTEM

Abstract

An object is to provide a motion detection solid-state image-capturing device and a motion detection system having a reduced power consumption and an improved motion detection accuracy. One solution is to combine together signals of a longer exposure time for a plurality of pixels and signals of a shorter exposure time for a plurality of pixels, which signals are output from a motion detection image-capturing device, and to determine the presence/absence of a moving object based on a differential signal between the signals of a longer exposure time and the signals of a shorter exposure time, wherein if it is determined that there is no moving object, at least part of a circuit of a motion detection image processing device or a video management device is stopped, thereby improving the detection accuracy and conserving the electric power.

Claims16

Dependent claims

-17. (canceled)

An image-capturing device comprising:

a pixel area including pixel sections having photoelectric conversion elements arranged two-dimensionally on a semiconductor substrate;
a plurality of vertical signal lines arranged with one another in a horizontal direction for outputting pixel signals obtained by photoelectric conversion through the pixel sections from a vertical end portion of the pixel area;
a read unit for simultaneously reading out pixel signals from the plurality of vertical signal lines;
a pixel control unit for controlling the pixel sections;
and
a signal processing unit for processing the pixel signals read out from the read unit,
wherein the pixel control unit includes accumulation time control means for dividing the photoelectric conversion elements arranged two-dimensionally into at least two sections, and controlling an accumulation time so that the accumulation time is different therebetween;
the signal processing unit includes differential signal generation means for generating a differential signal between pixel signals each having a different accumulation time, and motion determination means for determining presence/absence of a moving object based on the differential signal generated by the differential signal generation means.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/438,427Filed 10 Oct 2013

Priority

JP 2012-24969229 Oct 2012

Published

5 Nov 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification28 codes

H04N 5/144
Picture signal circuitry for video frequency region: movement detection
G06T 3/4015
Scaling of whole images or parts thereof, e.g. expanding or contracting: image demosaicing, e.g. colour filter arrays [CFA] or Bayer patterns
G06T 7/20
Image analysis: analysis of motion
H04N 23/12
For generating image signals from different wavelengths: with one sensor only

Motion detection solid-state image capturing device and motion detection system

Life of this patent

Motion detection solid-state image capturing device and motion detection system

Life of this patent

Abstract

Claims16