Video input processor, imaging signal-processing circuit, and method for reducing noises in imaging signals

一种成像信号、视频输入的技术，应用在成像信号处理电路和降低成像信号中噪声领域，能够解决劣化陡度等问题

CN101309360AInactive Publication Date: 2008-11-19SONY CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2008-11-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

A video input processor is disclosed. The processor includes: an imaging signal-generating portion configured to image a subject and producing first imaging signals containing visible light components and a second imaging signal containing near-infrared light components; a gain adjustment portion configured to adjustably set a maximum gain value according to a relative magnitude between the visible light components and the near-infrared light components and adjust a gain for the first imaging signals at the set maximum gain value; and a noise reduction portion configured to reduce noises in the first imaging signals after the gain has been adjusted.
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Description

Video input processor, imaging signal processing circuit and method for reducing noise Cross References to Related Applications The present invention contains subject matter related to Japanese Patent Application JP2007-131557 filed in the Japan Patent Office on May 17, 2007, the entire content of which is hereby incorporated by reference. technical field The present invention relates to a video input processor for imaging a scene and suppressing noise components of an imaging signal produced by signal processing. The invention also relates to an imaging signal processing circuit and a method for reducing noise in the imaging signal. Background technique The auto-exposure function is activated when a scene is imaged by a camera arrangement designed, for example, to image a motion picture sequence or a still image with increased ISO sensitivity. This shortens the exposure time of the sensor (imaging device) and increases the gain of the output signal from the sensor. T...

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