image sensor

An image sensor and pixel sharing technology, which is used in image communication, TV, color TV components and other directions, and can solve problems such as rising cost and chip area, difficulty in implementation, and complex high-speed circuit design.

Active Publication Date: 2018-04-06
HIMAX IMAGING LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional high-speed circuit design is more complex and difficult to implement, and causes an increase in cost and chip area

Method used

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Embodiment Construction

[0011] Certain terms are used in the specification and the claims that follow to refer to certain elements. It should be understood by those skilled in the art that manufacturers may refer to the same element by different nouns. This specification and the following claims do not use differences in name as a way of distinguishing elements, but rather differences in functions of the elements as a criterion for distinguishing. The reference to "comprising" throughout the specification and the following claims is an open-ended term and should be interpreted as "including but not limited to". Additionally, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if the first device is described as being coupled to a second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connecting means.

[0012] Please...

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Abstract

An image sensor includes an M pixel sharing circuit, an N pixel sharing circuit and a switching unit. Where M is an integer not less than 2, and N is an integer not less than 2. The switching unit is coupled between the floating diffusion node of the M pixel sharing circuit and the floating diffusion node of the N pixel sharing circuit.

Description

technical field [0001] Embodiments disclosed herein relate to image sensors, and more particularly, to a multi-pixel sharing circuit with dual readout paths. Background technique [0002] With the development of digital electronic devices, the demand for the overall number of pixels is gradually increasing, but the size of a single pixel must be reduced, which makes the reading of pixels a difficult problem in design. One of the ways to improve the frame rate is to reduce the readout time by using high speed circuits. However, the traditional high-speed circuit design is complex and difficult to implement, and increases cost and wafer area. In view of this, there is an urgent need for a novel image sensor to improve the above problems. SUMMARY OF THE INVENTION [0003] One of the objectives of the present invention is to provide a multi-pixel sharing circuit, such as an 8-pixel sharing circuit with dual readout channels. [0004] According to an exemplary embodiment of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/378
Inventor 林东龙李仲仁张中玮
Owner HIMAX IMAGING LIMITED
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