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Solid-stated image capturing device and electronic information device

A technology for capturing devices and solid-state images, applied in image communication, static cameras, televisions, etc., to solve problems such as horizontal line noise in image sensors

Inactive Publication Date: 2008-11-19
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Image sensors have a problem with horizontal line noise because the signal level varies in each horizontal line due to supply voltage fluctuations

Method used

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  • Solid-stated image capturing device and electronic information device
  • Solid-stated image capturing device and electronic information device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] FIG. 1 is a block diagram illustrating a solid-state image capture device according to Embodiment 1 of the present invention, which shows a circuit configuration of the solid-state image capture device.

[0083] The solid-state image capture device 10 according to Embodiment 1 includes: a pixel section 100a having a plurality of pixels arranged in a matrix; and an A / D conversion circuit 103 for performing A / D on pixel data (pixel signals) read out from the pixels. / D conversion to output digital pixel data (hereinafter referred to as digital pixel value) Dad as an A / D converted value. In Embodiment 1, the pixel portion 100a includes: an optical black portion 101 (left horizontal OB pixel portion), in which 64 pixels (horizontal OB pixels) shaded on the left side of the page are arranged horizontally; an optical black portion 102 (right horizontal OB pixel section) in which 64 pixels (horizontal OB pixels) shaded on the right side of the page are arranged in the horizont...

Embodiment 2

[0128] FIG. 6 is a diagram showing a solid-state image capturing device according to Embodiment 2 of the present invention.

[0129] The solid-state image capture device 10a according to Embodiment 2 is different from the solid-state image capture device 10 according to Embodiment 1 in that the solid-state image capture device 10a uses not only the pixel values ​​from the left horizontal OB pixel portion but also the pixel values ​​from the right horizontal OB pixel portion. The pixel value to calculate the predicted OB value. The rest of the structure is the same as that of the solid-state image capturing device 10 in Embodiment 1.

[0130] That is, similar to the solid-state image capture device 10 according to Embodiment 1, the solid-state image capture device 10a according to Embodiment 2 includes: a pixel section 100a having a plurality of pixels arranged in a matrix; an A / D conversion circuit 103, for performing A / D conversion on pixel data (pixel signal) read out from ...

Embodiment 3

[0139] FIG. 8 is a block diagram showing an exemplary schematic configuration of an electronic information apparatus using at least either of the solid-state image capturing devices 10 or 10a of Embodiment 1 or 2 of the present invention as its image capturing section.

[0140] In FIG. 8 , an electronic information device 90 according to Embodiment 3 of the present invention includes at least any of the following: an image capturing portion 91 using at least any of the solid-state image capturing devices 10 or 10a according to Embodiments 1 to 2; a storage section 92 (for example, a recording medium) for data-recording the high-quality image data obtained by the image capturing section 91 after predetermined signal processing is performed on the image data for recording; a display section 93 (for example, liquid crystal display device) for displaying the image data on a display screen (for example, a liquid crystal display screen) after performing predetermined signal processin...

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Abstract

The invention provides a solid state image capturing device and an electronic information device. The solid state image capturing device comprises: a pixel part, comprising a plurality of pixels disposed in a matrix; an A / D converting circuit, used for performing A / D conversion for the pixel signal read from the pixel of the pixel part to output a digital pixel value; and a correcting logic circuit, used for receiving the digital pixel value output from the A / D converting circuit, and correcting the digital pixel value of the effective pixel on every horizontal pixel line based on the average horizontal optical black value which is the average digital pixel value of a plurality of covered pixels in the corresponding horizontal pixel lines.

Description

[0001] This non-provisional application claims priority under 35 U.S.C § 119(a) to Patent Application No. 2007-131072 filed in Japan on May 16, 2007, the entire contents of which are hereby incorporated by reference. technical field [0002] The present invention relates to a solid-state image capture device and an electronic information device, and more particularly to transverse line correction in a solid-state image capture device and in an electronic information device using the solid-state image capture device. Background technique [0003] In recent years, electronic image capture devices such as video cameras and digital still cameras have become widely used. Such an electronic image capture device takes an image of a subject and records digital image data on a recording medium, and a CMOS image sensor, a CCD image sensor, or the like is used as a solid-state image capture device connected thereto. [0004] Image sensors have a problem of line noise because the signal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/217H04N5/335H04N25/00H04N101/00
CPCH04N5/361H04N25/633H04N25/78H04N25/63
Inventor 服部真司
Owner SHARP KK