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Format changing apparatus and method

A technology of format conversion and format information, applied in the direction of standard conversion and so on

Inactive Publication Date: 2007-01-10
LG ELECTRONIC (HUIZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] Therefore, when doing up-conversion in the case of the above-mentioned US patent US 5,835,160, a processing time of the magnitude of the output rate is required

Method used

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  • Format changing apparatus and method

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Embodiment Construction

[0031] Below, the structure and effect of examples of the present invention will be described with reference to the accompanying drawings. The structure and effect of the present invention illustrated according to the accompanying drawings are only described as an embodiment, and the above-mentioned technical ideas and core structures and effects of the present invention do not limited to this.

[0032] Typically, when upconverting, the output pixel to be interpolated lies between two input pixels.

[0033] At this time, if the information on the size of the input / output video is used, the position of the output pixel to be interpolated can be known in advance before the spatial resolution is converted.

[0034] Therefore, in the present invention, by simultaneously interpolating between two input pixels to generate a plurality of output pixels during one clock cycle, the spatial resolution conversion time can be shortened. That is, each clock cycle, by interpolating a plural...

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Abstract

Characters of format conversion device and method are that when carrying out conversion of increasing frequency in case that size of an input image is smaller than size of the output image, the invention generates multiple output pixels to be mapped between two input pixels within one clock cycle by using simultaneous interpolation so as to reach effect of shortening time of format conversion.

Description

technical field [0001] The invention relates to a device and method for transforming the spatial resolution of digital images. Background technique [0002] The formats that express the image space resolution include QCIF format, QVGA format, SIF format, CIF format, NTSC format, PAL format, 480P format, 720P format, 1080I format, etc. Therefore, in a fixed display device that inputs multiple resolutions, it is necessary to perform spatial resolution conversion in order to coordinate outputs. [0003] Generally, in order to transform the spatial resolution of an image, an inverse mapping method of re-mapping the coordinates of the output image on the coordinates of the input image needs to be used. [0004] figure 1 is an example showing this inverse mapping approach. [0005] When the size of the input image and the output image are different, since the output image coordinates mapped on the input image coordinates are not on the same input image coordinates, it is necess...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01
Inventor 金大重
Owner LG ELECTRONIC (HUIZHOU) CO LTD