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Method and apparatus providing pixel storage gate charge sensing for electronic stabilization in imagers

A storage gate and charge storage technology, applied in television, electrical components, image communication, etc., can solve problems such as unsuitable technology

Active Publication Date: 2009-02-18
MICRON TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these techniques are still undesirable

Method used

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  • Method and apparatus providing pixel storage gate charge sensing for electronic stabilization in imagers
  • Method and apparatus providing pixel storage gate charge sensing for electronic stabilization in imagers
  • Method and apparatus providing pixel storage gate charge sensing for electronic stabilization in imagers

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Embodiment Construction

[0027] In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various embodiments in which the invention may be practiced. The embodiments are described in sufficient detail to enable those skilled in the art to make and use the invention. It is to be understood that other embodiments may be utilized and structural, logical, and electrical changes and changes in materials may be made without departing from the spirit and scope of the present invention.

[0028] The term "pixel" refers to a light element unit cell comprising a light conversion device or photosensor and a transistor for processing electrical signals from electromagnetic radiation sensed by the light conversion device. For exemplary purposes only, the pixel described herein is illustrated and described as an inventive modification of a four-transistor (4T) pixel circuit. It should be appreciated that the inven...

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Abstract

An imaging device that stores charge from a photosensor under at least one storage gate. A driver used to operate the at least one storage gate, senses how much charge was transferred to the storage gate. The sensed charge is used to obtain at least one signature of the image scene. The at least one signature may then be used for processing such as e.g., motion detection, auto-exposure, and auto-white balancing.

Description

technical field [0001] This disclosure relates generally to imaging devices, and more particularly to circuits and sensor architectures for electronic balancing in imaging devices. Background technique [0002] A CMOS imager circuit includes a focal plane array of pixel cells, each of which cells includes a photosensor, such as a photogate, photoconductor, or photodiode, overlying a substrate so that in an underlying portion of the substrate Accumulate photogenerated charges. Each pixel cell has readout circuitry including at least one output field effect transistor formed in the substrate and a charge storage region formed on the substrate connected to the gate of the output transistor. The charge storage region may be configured as a floating diffusion region. Each pixel may include at least one electronic device (such as a transistor) for transferring charge from the photosensor to a storage area and a device (usually also a transistor) for resetting the storage area to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N3/15H04N23/40H04N25/00
CPCH04N3/155H04N5/378H04N25/40H04N25/771H04N25/76H04N25/707H04N25/77H04N25/50H04N25/78H04N25/75
Inventor 罗格·帕尼卡奇
Owner MICRON TECH INC