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Apparatus and method for checking dynamic vector

A dynamic vector and dynamic technology, applied to TV, color TV parts, TV system parts, etc., can solve the problems of reducing memory bandwidth, increasing the circuit scale of dynamic detection part, and not being able to effectively use difference evaluation parts, etc. , to achieve the effect of reducing memory bandwidth, reducing circuit scale and power consumption

Inactive Publication Date: 2005-03-09
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] However, in the motion detection device described in Patent Document 1, there are many judgment processes based on whether the motion detection range of the reference motion vector includes a partial area of ​​the reference image stored in the memory built in the LSI, and at the same time, the motion detection range based on the reference motion vector When the detection range includes only a partial area of ​​the reference image stored in the memory built in the LSI, the difference evaluation part cannot be effectively used because the next judgment processing and setting processing are not completed during the execution of the difference evaluation.
Therefore, it is necessary to increase the processing capacity of the difference evaluation part, and to speed up the judgment processing and setting processing, and there is a problem that the circuit scale of the motion detection part increases.
In addition, since repeated reading of the same coding unit is necessary, there is a problem that it is impossible to reduce memory bandwidth

Method used

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  • Apparatus and method for checking dynamic vector
  • Apparatus and method for checking dynamic vector
  • Apparatus and method for checking dynamic vector

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Experimental program
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no. 1 Embodiment

[0057] Fig. 1 shows a motion vector detection device according to a first embodiment, which is applicable to a moving picture coding system using motion compensation prediction and the like.

[0058] This motion vector detecting device is made up of following parts, namely: external large-capacity memory 110, detection result storage memory 120, reference unit high-speed memory 130, encoding unit high-speed memory 140, motion vector reference memory 150, external large-capacity The address generation unit 101 for image storage in the memory 110 transfers the reference information from the external large-capacity memory 110 to the detection result storage memory 120 and the reference information transfer unit 105 of the memory 150 for motion vector reference, and transfers the reference partial area from the external large The capacity memory 110 is transferred to the reference image transfer unit 103 of the high-speed memory 130 for the reference unit, and the coding unit is tr...

no. 2 Embodiment

[0113] The first embodiment shows an example of performing motion detection in the frame unit shown in Figure 24 and Figure 25, and the second embodiment will use the field unit shown in Figure 26 and Figure 27 in the motion vector detection device shown in Figure 1 An example of performing dynamic detection will be described.

[0114] The input image a data 110a is written and stored in the location indicated by the input image write address 101a generated by the image storage address generation unit 101 of the external large-capacity memory 110 .

[0115] First, with reference to the image storage mode setting section 100, it is judged whether the image to be encoded now is a two-direction predictive encoding image (B image) that is allowed to be used by motion vectors representing sequences from the past and the future in time. A reference image storage mode signal 100a for specifying the reference pixel storage mode of the reference unit high-speed memory 130 is generated ...

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Abstract

A motion vector detector that divides a picture which is encoded into a plurality of encoding blocks and evaluates differences between each encoding block and a reference block in a motion estimation range defined in a reference picture to detect a motion vector between pictures of a moving image.

Description

technical field [0001] The present invention relates to a motion vector detection device and a motion vector detection method for performing necessary motion detection between moving picture frames in a moving picture encoding device using motion compensation prediction such as the MPEG system. Background technique [0002] According to the moving image encoding (hereinafter referred to as MPEG encoding) device of the MPEG standard as the international standard of moving image compression technology, as shown in FIG. , MC (Motion Compensation: dynamic compensation) section 920, DCT (DiscreteCosine Transform: discrete cosine transform) section 925, quantization section 930, encoding multiplexing section 960, inverse quantization section 935, IDCT (Inverse Discrete Cosine Transform: inverse discrete cosine transform conversion) unit 940, partial reproduction unit 945, reproduced image memory 950, and the like. [0003] The input image memory 910 temporarily stores the output ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/50H04N5/14H04N7/12H04N19/105H04N19/136H04N19/139H04N19/159H04N19/167H04N19/196H04N19/42H04N19/423H04N19/503H04N19/51H04N19/57H04N19/577
CPCH04N19/00781H04N19/00587H04N19/00048H04N5/145H04N19/00484H04N19/00024H04N19/105H04N19/51H04N19/61H04N19/112H04N19/423H04N19/43H04N19/156
Inventor 上谷羲治
Owner KK TOSHIBA