Image display method and apparatus

An image display and image technology, applied in the field of communication, can solve the problems of high memory power consumption, low read transmission efficiency, etc.

Active Publication Date: 2010-06-02
HUAWEI TECH CO LTD
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  • Abstract
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Problems solved by technology

[0007] However, when the Video layer is turned on, the Display Controller reads the Video layer from the off-chip DRAM according to the display frame rate. Under the condition that the display frame rate is 60 frames per second, the power consumption of reading the Video is about 40mW.
The Display Controller can support real-time rotation for the Graphic layer, but for the Video layer, it needs to be scanned column-by-column when rotating, and almost every read operation needs to activate the row (Activate Row). The efficiency of read transmission Low, resulting in high power consumption of its memory, so the Display Controller generally does not support rotation of the Video layer, and the rotation of the Video needs to be completed by the rotation engine alone

Method used

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  • Image display method and apparatus
  • Image display method and apparatus

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] see image 3 , is a schematic composition diagram of a specific embodiment of the image display device in the present invention. The unit includes:

[0028] The obtaining unit 1 is used for obtaining the update window information according to the information of the layer to be updated when the image needs to be updated. Wherein, whether the relevant image needs to be updated can be known by sampling the update request of each layer at the beginning of each...

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Abstract

The invention discloses an image display method, including obtaining the update window information according to the layer information required to update when the image displays the update; reading inthe layer image information according to the updated window information; storing the image information to the buffer storage after being processed; controlling the display device to display the imageinformation of each layer stored in the buffer storage after being processed. The invention also discloses an image display device. The invention can reduce the power waste for reading the image meanwhile reduce the cost of the storage.

Description

technical field [0001] The present invention relates to the communication field, in particular to an image display method and device. Background technique [0002] At present, more and more high-end mobile terminal devices have the functions of multi-layer overlay and full-screen rotating display. Multi-layer superposition is mainly used in video telephony, camera, photo taking and media playback. In these applications, it is sometimes necessary to superimpose one or two video (Video) layers with the graphics (Graphic) layer containing the user interface , the terminal that supports the mouse (Cursor) will also stack the Cursor layer on the top layer. At the same time, in order to support the two display modes of horizontal screen and vertical screen, it is also necessary to rotate the multi-layer superimposed image by 90 degrees / 270 degrees through the whole screen rotation and then send it to the LCD for display. [0003] At present, image display devices that realize th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G5/36G09G5/397G09G5/42
CPCG09G5/397G09G5/14G09G2340/125G09G5/393G09G2340/0492
Inventor 黄骏季渊
Owner HUAWEI TECH CO LTD
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