Image data compression system and method thereof

A technology of image data and compression system, which is applied in the parts of TV system, image communication, TV, etc., can solve the problems of consuming compression time and affecting the efficiency of compressed image data, and achieve the effect of avoiding compression time.

Inactive Publication Date: 2010-02-03
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Abstract
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Problems solved by technology

In this way, every time you adjust the compression ratio, you need to wait until the compression buffer space is fully occupied, which consumes too much compression time and affects the efficiency of compressing image data.

Method used

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  • Image data compression system and method thereof
  • Image data compression system and method thereof

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Embodiment Construction

[0020] see figure 1 The image data compression system 2 provided by the present invention includes an image acquisition device 4 , a compression format converter 6 , a compression buffer register 8 , a storage device 10 , a synchronization signal generator 12 and a compression ratio controller 14 .

[0021] The image acquisition device 4 can be an image sensor, such as a charge coupled device image sensor (CCD, Charge Coupled Device) or a complementary metal oxide semiconductor image sensor (CMOS, Complementary MetalOxide Semiconductor). The image acquisition device 4 can also be an image memory, which is used to acquire and store original image data from external devices.

[0022] The compressed format converter 6 is connected with the image acquisition device 4 and the compression ratio controller 14 . It is used to compress the original image data acquired by the image acquisition device 4 into a suitable storage format according to the compression ratio adjusted by the co...

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Abstract

The invention discloses an image data compression system, comprising an image acquisition device, a compression format converter, a compression buffer memory register, a storage device and a compression ratio controller, wherein, the compression ratio controller comprises a buffer memory space computation module, an image data computation module and a compression ratio control module, and the compression ratio controller automatically adjusts compression ratio by comparing the proportional values of the buffer memory space used by the compressed image data and the compression buffer register with the proportional values of the compressed original image data and the whole original image data, thus avoiding too much compression time consumption due to the problem that the compression ratio is readjusted after the space of the compression buffer memory register is filled in the compressing process. The invention also provides a compression method of the image data.

Description

technical field [0001] The present invention relates to an image data compression system and method thereof, in particular to an image data compression system and method for compressing image data into JPEG (Joint Photographic Experts Group) format. Background technique [0002] The image data shot by many electronic image devices (such as digital cameras, digital video cameras, etc.) generally all go through an image data compression process before being stored. Since the JPEG image data compression method has a relatively high compression ratio, the current image data compression mostly adopts the JPEG format. [0003] Because the compression of image data is a gradual process, the image data that is compressed first will be temporarily stored in the compression buffer area, and then transmitted to the storage device for storage after all the image data is compressed. The compression ratio of the image data is defined as the ratio of the original image data retained durin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N5/926
CPCH04N7/3038H04N19/00187H04N19/15
Inventor 林昶强
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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