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A method and a device for image composition display of multi-layer and multi-format input

An image synthesis, multi-format technology, used in static indicators, cathode ray tube indicators, instruments, etc., to achieve the effect of low frequency, low data bandwidth, and low cost

Inactive Publication Date: 2011-09-14
SHANGHAI INFOTM MICROELECTRONICS
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  • Claims
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Problems solved by technology

Although the performance of embedded processors has also improved a lot, it is far from being satisfied with the increased overhead of image resolution, so there is a method of hardware acceleration.

Method used

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  • A method and a device for image composition display of multi-layer and multi-format input
  • A method and a device for image composition display of multi-layer and multi-format input
  • A method and a device for image composition display of multi-layer and multi-format input

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Embodiment Construction

[0035] The present invention will be further described below by taking three-layer image synthesis as an example.

[0036] Such as Figure 4 As shown, there are three layers of image W0 in the bottom layer and W2 in the highest layer, and W1 in the middle layer. In order to be easy to understand, the following will illustrate the process of compositing by taking the layer to complete full occlusion (when two layers overlap, the underlying layer is completely invisible).

[0037] As for W0, since it is the bottom layer among the three layers, the reading of data by its data prefetching unit depends on the status of W1 and W2 layers. The data prefetching unit first analyzes the influence of W1 and W2 on it, judges whether the current pixel is blocked, and how many pixels are not blocked from the current pixel, and according to the judgment, the prefetching unit starts to prefetch the data from the current pixel until it starts to be blocked. All pixel data for a pixel point. ...

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Abstract

The invention discloses a method and a device for image composition display of multi-layer and multi-format input. The method and the device are characterized by first performing composition anticipation of each layer respectively through a prefetching module, reading data according to anticipation results, realizing image merging of the layers on a pixel-by-pixel basis through an image merging module during display. The method and device significantly reduce a demand of the image composition for data bandwidth through the intelligent anticipation of the prefetching module.

Description

Technical field: [0001] The present invention relates to the field of chip design, and more specifically, relates to a method and device for composite display of multi-layer images supporting multi-layer and multi-format images on the same display interface. Background technique: [0002] With the rapid development of science and technology, it is accompanied by people's pursuit of higher quality of visual effects (including definition and screen size, etc.), so the resolution of various display media is also increasing year by year. Correspondingly, the performance requirements for the display control equipment are also correspondingly increased. [0003] The function of layer synthesis is to synthesize multiple images of different formats according to the position and attributes of the layers and display them on the same display screen. [0004] The initial layer synthesis is generally done by software. Although the performance of the embedded processor has also improved...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/00G09G5/02
Inventor 金荣伟李兴仁林锦麟刘春晖
Owner SHANGHAI INFOTM MICROELECTRONICS
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