Method and device for driving solid-state imaging device, imaging apparatus, and image synthesizing method

A technology of solid-state imaging devices and imaging equipment, applied in image communication, static cameras, radiation control devices, etc., which can solve the problems of difficult pixels to be divided into low-sensitivity pixels and high-sensitivity pixels, blurred objects, and slow shutter speeds, etc.

Inactive Publication Date: 2008-10-01
FUJIFILM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Specifically, as the exposure level is increased, the shutter speed becomes slower, causing frame rates to drop and subjects to blur
[0007] It is also difficult to separate pixels into low-sensitivity pixels and high-sensitivity pixels due to the small size of individual pixels

Method used

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  • Method and device for driving solid-state imaging device, imaging apparatus, and image synthesizing method
  • Method and device for driving solid-state imaging device, imaging apparatus, and image synthesizing method
  • Method and device for driving solid-state imaging device, imaging apparatus, and image synthesizing method

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Embodiment Construction

[0039] Although the present invention will be described below with reference to the exemplary embodiments of the present invention, the following exemplary embodiments and modifications thereof do not limit the present invention.

[0040] According to an exemplary embodiment of the present invention, since an object image signal with a high electron multiplication factor and an object image with a low electron multiplication factor are synthesized, when an overexposed image is acquired, the signal amount can be increased in the imaging device. Zoom in in order to provide any desired overexposed image without increasing exposure, thereby enabling increased shutter speed and suppressing frame rate drop and object blur. Since signal amplification is performed in the solid-state imaging device before noise is introduced, only signal components are amplified and it becomes possible to obtain a wide dynamic range subject image with good S / N for processing to apply gain at a later sta...

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Abstract

A method for driving a solid-state imaging device including a plurality of pixels arranged in a two-dimensional array, each of the plurality of pixels accumulating a signal charge according to an amount of incident light, is provided. The method includes: performing electron multiplication of a first signal charge at a first multiplication factor to output a first image signal; and performing electron multiplication of a second signal charge at a second multiplication factor to output a second image signal, at least the first and second image signals being image signals of the same scene of a subject and being successively output.

Description

[0001] This application is based on and claims priority from Japanese Patent Application No. 2007-94675 filed on March 30, 2007, the entire disclosure of which is incorporated herein by reference. technical field [0002] The present invention relates to a method and apparatus for driving a solid-state imaging device, an imaging apparatus, and an image synthesis method in the imaging apparatus, which are capable of acquiring images in a wide dynamic range. Background technique [0003] JP-A-6-141229 discloses an example of a camera for obtaining a wide dynamic range image. In JP-A-6-141229, an overexposed image and an underexposed image of the same subject are continuously acquired and synthesized to widen the dynamic range of the image. [0004] In JP-A-59-210775, a solid-state imaging device is equipped with two kinds of pixels, a low-sensitivity pixel and a high-sensitivity pixel, and the low-sensitivity image data acquired with the low-sensitivity pixels and the high-sen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N3/15H04N5/235H01L27/148H04N5/335H04N5/355H04N5/369H04N5/3728H04N5/374H04N5/376H04N101/00
CPCH04N3/1575H04N3/1537H04N5/2355H04N5/35572H04N5/37213H04N5/3728H04N23/741H04N25/587H04N25/57H04N25/713H04N25/73
Inventor 大岛宗之小林宽和
Owner FUJIFILM CORP
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