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Reference address computing device and method for motion compensation of image processing

A technology of motion compensation and reference address, which is applied in image communication, digital video signal modification, electrical components, etc., can solve the problems of large number of transistors and complex circuits, and achieve the effect of simplifying the circuit

Inactive Publication Date: 2006-05-03
ALICORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the hardware circuit for calculating the motion vector (MV) of the above two specifications (spec) is to be realized, the circuit is quite complicated and the number of transistors used must be quite large.

Method used

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  • Reference address computing device and method for motion compensation of image processing
  • Reference address computing device and method for motion compensation of image processing
  • Reference address computing device and method for motion compensation of image processing

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Embodiment Construction

[0038]Please refer to FIG. 4 , which is a reference address calculation device for motion compensation of image processing according to the present invention. The motion vector calculation device for image processing includes a shifter 32, and the shifter 32 includes three shifters, which can logically shift the motion vector of the image data by three bits to the right. The present invention also includes a Motion vector correction look-up table 31, the motion vector correction look-up table 31 of the image data provides the difference correction value of three bits of logical shift to the right and the video verification prototype, the value of the motion vector correction look-up table 31 is a pre-calculated good value. The motion vector correction look-up table 31 takes the zeroth to the third bit of the image data motion vector as a unit, and every sixteen is a unit, wherein the third, fourth, fifth, sixth, seventh, fourteenth, and fifteenth bits There is a difference of...

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Abstract

This invention discloses a device for computing the reference address of motion compensation to the image process including: a shifter shifting the motion vector of the image data to three bits to the right logically, a motion vector correction check list providing the difference correction value of the value for shifting three bits to the right and that of the original video check, a block shift address list connected to the motion vector check list providing the shift address of the computed image data related to image initial points and an adder connecting to the shifter and said block shift address list for totaling the result of shifting three bits of the motion vector to the right logically and the shift address of the current decode block to get the reference address of the motion compensation of the image data.

Description

technical field [0001] The present invention relates to a kind of reference address device and method of the motion compensation of image processing, particularly relate to a kind of used in moving picture expert group standard four (MPEG4) and DivX (this DivX is cooperated by the MPEG-4 V3 image format of Microsoft) A reference address calculation device and method for motion compensation (an image coding standard formed by combining MP3 or Windows Media Audio V2 sound effects). Background technique [0002] The Motion Picture Experts Group Specification 4 (MPEG4) and DivX decoder is a macro that compresses each of the Motion Picture Experts Group Specification 4 (MPEG4) and DivX coded bit streams based on previously transmitted and decoded images block decoding. In order to effectively compress the image in motion in the macroblock, each macroblock is related to the previous image macroblock, and the displacement between the macroblock and the associated image macroblock ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M7/42H04N19/91
Inventor 纪富中
Owner ALICORP