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Solid-state imaging device

一种摄像装置、摄像部的技术，应用在带有单个拾取装置的信号发生器、图像通信、图片信号发生器等方向，能够解决影响调节精度等问题

Inactive Publication Date: 2008-07-02
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, in the technology described in Patent Document 1, the difference in condition setting at the time of adjustment affects the adjustment accuracy

Method used

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no. 1 Embodiment approach

[0039] FIG. 1 is a block diagram showing the configuration of an imaging device according to a first embodiment of the present invention.

[0040] The camera device 100 has: camera lens system 101; camera element 102; camera circuit 103; AD converter 104; output selection unit 105; pre-processing unit 106; image processing unit 107; interface unit 108; buffer 111; video memory 112; video output circuit 113; image display LCD (Liquid Crystal Display, liquid crystal display) 114; external interface unit 115;

[0041] The photographic lens system 101 has a zoom optical system, an aperture unit, an autofocus optical system, and the like. The imaging element 102 corresponding to the imaging unit has, for example, a light receiving unit composed of millions of pixels. In addition, it is configured to convert a subject image incident through the photographing lens system 101 into an electrical signal, and output it as a pixel signal from a plurality of output channels as will be des...

no. 2 Embodiment approach

[0172] In the first embodiment, in order to properly read the saturated output value, the gain of the amplifier is reduced to 1 / 2.

[0173] On the other hand, the second embodiment is different from the first embodiment in that the correction coefficient is obtained without reducing the gain of the amplifier (keeping the gain of the amplifier at 1).

[0174] Therefore, the same symbols are assigned to the same parts as those in the first embodiment, and detailed description thereof will be omitted.

[0175] FIG. 13 is a diagram showing a detailed configuration of circuits related to the imaging circuit 103 .

[0176] Compared with the imaging circuit 103 of the first embodiment shown in FIG. 2 , the point of difference is that a reference voltage setting unit 132 and a switching unit 133 are newly provided.

[0177] The reference voltage setting unit 132 supplies a predetermined voltage to the switching unit 133 provided on each output CH of the imaging element 102 .

[0178...

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Abstract

The present invention provides an imaging apparatus including an imaging element for outputting data from a plurality of channels and capable of simply adjusting an output difference between the channels. The imaging apparatus includes: an imaging means (102) wherein a plurality of output units can output photoelectric conversion outputs obtained by receiving light by each of two-dimensionally arranged light receiving units; signal amplifier means (129) each provided according to each of a plurality of the output units; a detection means (110) for detecting each level of saturation outputs of a plurality of the output units when the photoelectric conversion output reaches a saturation level; and a setting means (131) for setting an amplification degree of each signal amplifier means so as to equalize the levels of the detected saturation outputs.

Description

technical field [0001] The present invention relates to a technique of adjusting an output signal difference between output channels in an imaging device including an imaging element having a plurality of output channels. Background technique [0002] When there is a gain difference in each signal path for imaging signals of two channels simultaneously output from an imaging element having two photoelectric conversion output channels, a difference occurs in the imaging signal level between the channels. [0003] As a result, horizontal streaks and flickering appear on the projected camera screen. [0004] As a solution, it is described as follows: According to the imaging brightness level, the gain of the AGC (Automatic Gain Control, automatic gain control) circuit on the side of one channel is determined by the gain control circuit, and then based on the gain and the stored gain characteristics, the calculation unit The gain of the AGC circuit on the other channel side is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/335H04N23/12H04N23/76H04N25/00
CPCH04N5/378H04N5/3742H04N5/3651H04N25/671H04N25/767H04N25/78H04N25/75
Inventor 森圭一五味祐一松田成介
Owner OLYMPUS CORP
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