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A system to accelerate the arithmetic coding processing speed and its method

A technology of processing speed and arithmetic coding, which is applied in television, electrical components, digital video signal modification, etc., can solve problems such as multi-floating point operations, arithmetic coding program running speed is difficult to meet daily applications, unfavorable hardware implementation, etc.

Inactive Publication Date: 2009-10-28
PRIMAX ELECTRONICS LTD
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Problems solved by technology

Unfortunately, although arithmetic coding can obtain the shortest code length, its own complexity and the existence of many floating-point operations are not conducive to hardware implementation, which also makes arithmetic coding very slow at runtime.
Even in today's fast-changing central processing unit (CPU) speed, the operation speed of arithmetic coding programs is difficult to meet the needs of daily applications.

Method used

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  • A system to accelerate the arithmetic coding processing speed and its method
  • A system to accelerate the arithmetic coding processing speed and its method
  • A system to accelerate the arithmetic coding processing speed and its method

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Embodiment Construction

[0042] Please refer to figure 1 , is a system architecture diagram of the present invention. The difference from the previous processing method is that in the past, when using arithmetic coding to process image compression, it was all in a sequential manner, and only one pixel data could be read at a time, such as Figure 2a As shown, when the pixel 1 is read in, it is first judged whether the read-in pixel PIX is a more probable symbol (MPS, More Probable Symbol)? If so, call the symbolic function codes (CODEMPS) with a higher probability of occurrence to perform calculation processing; otherwise, call the symbolic function codes (CODELPS) with a lower probability of occurrence to perform calculation processing, and then a set of A and C values ​​can be obtained 190.

[0043] To give an example for illustration, please refer to Figure 3a, which is a schematic diagram of the known sequential processing of pixel data arithmetic coding, assuming that the probability of "0" i...

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Abstract

The invention relates to a system for accelerating the arithmetic code processing and relative method. Wherein, when the input data is two continuous equal pixels and background values, it adds one group of calculate circuit and one group of accelerate list, to judge the calculate method of output interval size and base, to calculate out the values in one time impulse, to accelerate the speed.

Description

technical field [0001] The present invention relates to a system and method for speeding up arithmetic coding processing, in particular to a system and method for compressing binary image data applied in the Joint Bi-level Image Experts Group (JBIG) its method. Background technique [0002] In today's society where information circulation is widespread, the demand for images is increasing, and the digitization of images is an inevitable trend. However, the amount of data occupied by digitized images is quite large, occupying too much memory, making data transmission and processing quite time-consuming, and it is extremely inconvenient in transmission and processing. Data compression is the best The solution. [0003] The application prospect of image data compression technology is very broad. It can be said that all digital image products involve image data compression technology, and the digitalization of electronic products is the general trend. For example, digital hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N19/102H04N19/146
Inventor 毛清龙陈丕崇
Owner PRIMAX ELECTRONICS LTD
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