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A kind of ccd noise reduction method and noise reduction device

A noise reduction and data technology, applied in the field of CCD noise reduction, can solve the problems of reducing accuracy, limiting the minimum value of signal charge packets, signal interference, etc., and achieving the effect of reducing performance requirements

Active Publication Date: 2020-04-17
合肥含铭电子技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Noise is superimposed on the signal charge, forming interference to the signal, reducing the accuracy of the restored information represented by the signal charge packet, and limiting the minimum value of the signal charge packet

Method used

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  • A kind of ccd noise reduction method and noise reduction device
  • A kind of ccd noise reduction method and noise reduction device

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] Such as figure 1 As shown, the embodiment of the present invention proposes a noise reduction method of a CCD, comprising the following steps:

[0028] S101: setting a sampling clock;

[0029] S102: Synchronously collect the power signal data when the CCD collects the signal data through the sampling clock;

[0030] S103: Calculate the ripple interference of the power signal data;

[0031] S104: Determine the influence ratio of the ripple interferenc...

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Abstract

The invention provides a CCD noise reduction method, comprising the following steps: Step 1: setting a sampling clock; Step 2: synchronously collecting the power signal data when the CCD collects signal data through the sampling clock; Step 3: calculating the power Ripple interference of signal data; step 4: determine the influence ratio of the ripple interference on the CCD signal; step 5: remove the ripple interference from the CCD signal according to the influence ratio, and complete noise reduction. This solution can reduce the performance requirements on the power supply and CCD.

Description

technical field [0001] The invention relates to the technical field of CCD noise reduction, in particular to a CCD noise reduction method and a noise reduction device. Background technique [0002] With the continuous development of CCD, especially when the low-light CCD develops towards low illumination, noise research has become an obstacle to the further development of CCD. Noise is an important parameter of CCD. It is an important factor in determining the signal-to-noise ratio, and at the same time, the signal-to-noise ratio is one of the most important indicators among various data parameters. With the continuous development of miniaturization and integration of CCD devices, the increase in the number of CCD photosensitive elements will inevitably reduce the area of ​​photosensitive elements, thereby reducing the output saturation signal of CCD. In order to expand the dynamic range of the CCD, it is necessary to reduce the noise of the CCD. [0003] When the CCD is ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/372H04N5/357
CPCH04N25/60H04N25/71
Inventor 罗义斌
Owner 合肥含铭电子技术有限公司