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Anti-flicker apparatus and method

An anti-flicker and exposure technology, which is applied to TV, color TV parts, electrical components, etc., can solve problems such as flicker, and achieve the effect of avoiding flicker problems

Inactive Publication Date: 2012-06-20
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But now many people will take a digital camera to different countries, so it is impossible to avoid the flickering problem of a camera in different regions

Method used

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  • Anti-flicker apparatus and method
  • Anti-flicker apparatus and method

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Embodiment Construction

[0017] Please also refer to figure 1 figure 2 , image 3 and Figure 4 , figure 1 is the power waveform diagram of 50Hz mains, where the abscissa is time, in milliseconds (ms), and the ordinate is power, in watts (w). figure 2 It is a waveform diagram of the brightness change of the fluorescent lamp, and the brightness of the fluorescent lamp changes with the change of the commercial power. image 3 It is a schematic diagram of the exposure time when the exposure frequency of the image sensor is 30Hz and the exposure time is 5ms. Figure 4 It is a composite graph of the brightness of the fluorescent lamp and the exposure time of the image sensor. The blackened area is the exposure time period of the image sensor. It can be seen from the figure that when the frequency of the commercial power is 50Hz, the brightness of the fluorescent lamp changes during each exposure time, so the exposure amount obtained by the image sensor is also different. Because the least common m...

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Abstract

The invention provides an anti-flicker device which comprises an image sensor, a processor and a memorizer. The memorizer has an anti-flicker program, and the processor can execute the anti-flicker program. The anti-flicker program comprises: a light exposure obtaining module is used for obtaining multiple light exposure amount of the image sensor; a grouping module is used for grouping exposureamount into three groups; a fitted line module is used for fitting exposure amount of each group into a smooth line; a crossing point obtaining point is used for obtaining the crossing point of the fitted line; a sampling time module is used for setting sampling time; an eigenvalue obtaining module is used for obtaining the eigenvalue; a light source frequency determination module is used for judging the light source frequency according with the eigenvalue; and a frequency setting module is used for setting exposure frequency of the image sensor. In addition, the invention also provides an anti-flicker method.

Description

technical field [0001] The present invention relates to an anti-flickering device and method. Background technique [0002] The power frequency currently used in the world is only 50Hz and 60Hz, but the exposure frequency of the image sensor on the digital camera is generally 30Hz. When using a 30Hz image sensor in a 60Hz environment, due to the multiple relationship of the frequency, there will not be a problem of screen flickering due to display asynchrony, but in a 50Hz environment, there will be a problem of screen flickering. Some designs display This problem has been taken into account when selecting the frequency, so different display frequencies of 25Hz or 30Hz will be designed according to the shipping area to meet the needs. But now many people take a digital camera to different countries, so it is unavoidable that one camera flickers in different areas. SUMMARY OF THE INVENTION [0003] In view of the above, it is necessary to provide an anti-flicker device an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/235
Inventor 廖俸庆陈政勇
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD