Method and system for eliminating horizontal image tearing

A horizontal and image technology, applied in the field of image display, can solve the problem of frame rate drop, affecting the display effect, etc., to achieve the effect of ensuring the frame rate and eliminating the horizontal tearing of the image

Inactive Publication Date: 2013-08-21
GUANGDONG VTRON TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

It can be seen from the figure that when the vertical synchronization is turned on when the time f is reached, only 5 frames of a / b / c / d / e / f are displayed, so although turning on the vertical synchronization can eliminate the horizontal tearing of the image phenomenon, but it will cause a sharp drop in the frame rate, which affects the display effect

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  • Method and system for eliminating horizontal image tearing
  • Method and system for eliminating horizontal image tearing
  • Method and system for eliminating horizontal image tearing

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Embodiment Construction

[0022] The technology of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] like figure 1 As shown, the method for eliminating image horizontal tearing of the present invention comprises:

[0024] S1. Establish at least three frame buffers inside the graphics card, and respectively set a read-write mutual exclusion marker and a time marker in the frame buffers; wherein, each frame buffer can be read by the display, and the read-write mutual exclusion The states marked by the exclusive marker are write operation, read operation or idle. When the frame buffer does not perform read and write operations, the read-write mutex marker is marked as an idle state, and there can only be one state at any time; time The marker time value is the time at which the framebuffer completes writing.

[0025] S2. The read-write mutex marker is idle and the read-write mutex marker of the earliest frame buffer of the tim...

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Abstract

A method for eliminating image horizontal tearing, comprising: S1, establishing at least three frame buffers inside the graphics card, setting a read-write mutex marker and a time marker in each frame buffer; S2, setting The read-write mutex marker of the frame buffer is set to the write operation state, and the image data is written into the frame buffer at the same time. The marker is set to an idle state; S3, the read-write mutex marker of the frame buffer is set to a read operation state, and the image data in the read frame buffer is output to the display. After the reading is completed, the read-write mutex The marker is set to the idle state while leaving the value of the time marker unchanged. The present invention also provides a system for eliminating horizontal image tearing. Through the technology of the present invention, in image display, image horizontal tearing is eliminated, and the frame rate of image rendering is guaranteed.

Description

technical field [0001] The invention relates to image display technology, in particular to a method and system for eliminating image horizontal tearing. Background technique [0002] In the current image display field, in order to eliminate the horizontal tearing phenomenon of the picture, we usually need to turn on the vertical synchronization of the graphics card; and turning on the vertical synchronization of the graphics card will cause a sharp drop in the image rendering frame rate. like figure 1 as shown, figure 1 It is a schematic diagram of a sharp drop in frame rate caused by turning on vertical synchronization. Without turning on vertical synchronization, the graphics card can render and display a total of 11 frames of a / b / c / d / e / f / g / h / i / j / k , but in use, the image may be torn horizontally. In "Vertical Synchronization Time of Graphics Card", each black vertical line represents a vertical synchronization, and the time between vertical synchronizations is uniform;...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/14
Inventor 荆建营
Owner GUANGDONG VTRON TECH CO LTD
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