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Image scaling device, method and image display device

An image display device and a technology for image scaling, applied in the field of image display devices and image scaling devices, can solve the problem of not taking into account the cost and image output delay at the same time, and achieve the problem of eliminating the zoom effect and the asynchronous delay that cannot be taken into account at the same time Effect

Inactive Publication Date: 2008-05-21
ACTIONS ZHUHAI TECH CO
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Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide an image zooming device, aiming to solve the problem that the current image zooming device does not take into account both cost and image output delay

Method used

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  • Image scaling device, method and image display device
  • Image scaling device, method and image display device
  • Image scaling device, method and image display device

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] In the embodiment of the present invention, by adopting the configurable line buffer during vertical scaling, and assigning the configurable line buffer to the Y channel in the YUV block storage mode, the YUV asymmetrical hardware structure is realized; In the storage mode, the line buffer is allocated to the U and V channels, which realizes the symmetrical structure of YUV and eliminates the phenomenon of asynchronous delay.

[0027] FIG. 1 is a schematic diagram of the structure of various module units when the image display device performs image scaling. For the convenience of description...

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Abstract

The present invention is applicable to the field of image display, and provides an image scaling device, method and equipment. The image scaling device includes a vertical scaling unit and a horizontal scaling unit. The vertical scaling unit includes three sets of data respectively related to Y, U and V Corresponding data channel controller, at least two line buffers, and interpolation operator, the vertical scaling unit further includes: a configurable line buffer; and a configurable line buffer controller, which is set according to the image pixel data storage mode The configurable line buffer is used as the line buffer corresponding to the Y data channel controller or the line buffer corresponding to the U and V data channel controllers. Through the use of configurable line buffers, the present invention can realize the flexible conversion between symmetrical and asymmetrical line buffer structures of each data channel in the vertical scaling unit under different color data storage modes, thus without increasing the hardware cost The problem of asynchronous delay of each channel is eliminated.

Description

technical field [0001] The invention belongs to the field of image display, and in particular relates to an image scaling device, method and image display equipment. Background technique [0002] Embedded image display devices, such as video playback and graphic display of computer systems, are currently widely used and promising directions. Since the size of the original image or video is inconsistent with the display resolution of the actual display, how to realize image scaling has become an important issue in computer display. [0003] Image scaling involves two-dimensional scaling. The usual practice is to perform two one-dimensional scaling in the vertical direction and the horizontal direction. When vertical scaling, since the image data is based on the horizontal scanning method, the upper and lower points in the image are in time There will be a delay of one line of data, so when performing multi-tap interpolation operations, correspondingly use several line buffer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/373H04N5/44
Inventor 黎明付文海李炜
Owner ACTIONS ZHUHAI TECH CO
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