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Apparatus for calculating absolute difference value, and motion estimation apparatus and motion picture encoding apparatus

A technology of absolute difference and motion estimation, applied in image communication, television, electrical components, etc., can solve the problems of increased load and large number of SAD computing units

Inactive Publication Date: 2005-06-08
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0013] Also, because the conventional SAD calculation unit requires at least two adders in each absolute difference calculator, a large number of adders is required, and the load of the SAD calculation unit increases

Method used

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  • Apparatus for calculating absolute difference value, and motion estimation apparatus and motion picture encoding apparatus
  • Apparatus for calculating absolute difference value, and motion estimation apparatus and motion picture encoding apparatus
  • Apparatus for calculating absolute difference value, and motion estimation apparatus and motion picture encoding apparatus

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Embodiment Construction

[0027] Embodiments of the invention will now be described in detail, examples of which are shown in the accompanying drawings, wherein like reference numerals refer to like parts throughout. The embodiments are described below in order to explain the present invention by referring to the figures.

[0028] Figure 5 is a schematic diagram of a SAD calculation unit for a 2×2 block according to the first embodiment of the present invention. In the first embodiment of the present invention, a SAD calculation unit for a 2×2 block is described for convenience of explanation. However, those skilled in the art will understand how to apply the SAD computation unit to 16x16 blocks.

[0029] Figure 5 The shown SAD calculation unit includes: a first difference calculation unit 510, a second difference calculation unit 530, a third difference calculation unit 550, a fourth difference calculation unit 570, a first pseudo absolute value calculation unit 520, a Second pseudo absolute val...

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Abstract

An apparatus for calculating an absolute difference that promotes an efficient structure of a SAD calculation unit having a tree structure, and a motion estimation apparatus and a moving image encoding apparatus using the apparatus for calculating an absolute difference. The number of adders required for each absolute difference calculation unit can be reduced by performing calculation after inputting output carries output from a plurality of pseudo absolute difference calculation units to adders in the adder tree.

Description

[0001] This application claims priority to Korean Patent Application No. 2003-86747 filed with the Korean Intellectual Property Office on December 2, 2003, which is hereby incorporated by reference in its entirety. technical field [0002] The present invention relates to an apparatus for calculating an absolute difference and a motion estimation apparatus using the apparatus for calculating an absolute difference, and more particularly, to an apparatus for calculating an absolute difference which facilitates An efficient structure of an absolute difference calculation unit, and a motion estimation device using the device for calculating an absolute difference. Background technique [0003] Since digital video recorders (DVRs) and personal video recorders (PVRs) have been widely used recently, a great deal of research and development on image compression is ongoing. Because conventional DVRs and PVRs compress input images...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/50H04N19/42H04N19/51
CPCH04N19/43H04N19/51H04N19/61
Inventor 宋秉哲
Owner SAMSUNG ELECTRONICS CO LTD
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