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Access display data region control method at screen displaying

A technology for displaying data and screen display, applied to static indicators, instruments, etc., can solve problems such as inability to completely eliminate screen display errors, high cost, and complex hardware, and achieve the effect of improving actual effects, high cost efficiency, and simple hardware

Inactive Publication Date: 2009-10-14
孙龙 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires additional hardware, which makes the hardware more complicated and costs more. At the same time, it cannot completely eliminate the error of the screen display.

Method used

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  • Access display data region control method at screen displaying
  • Access display data region control method at screen displaying
  • Access display data region control method at screen displaying

Examples

Experimental program
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Effect test

Embodiment Construction

[0025] Preferred embodiments of the present invention are described in detail below.

[0026] as attached figure 1 Shown is a block diagram of the control system structure of the present invention, the system includes a display controller, a display data storage unit that is a display data area, a display and other request sources; The data area reads data, and outputs the display data and the generated control signals (control signals include display clock signals and other necessary control signals for screen display) to the display, and can also handle read and write requests from other request sources; The display data area is the physical place used to store all the data required for screen display. The data stored in the display data area and the display data finally sent to the display by the display controller can be different, but the display data must be stored by the display data area. The data is transformed, that is, the final display data cannot be generated wi...

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Abstract

The invention provides a processing method for other request sources to access the display data area at the same time when the screen is displayed. It is a method for coordinating and managing the relationship between the screen display, the display data area and other request sources that need to access the display data area. In different scanning time periods, other request sources can access the display data area at any time, and control the reading of data and signal input of the display through the display controller to ensure that the managed parts can work normally and complete their respective tasks. This method It solves the screen display error caused by other request sources accessing the display data area at the same time, improves the actual effect of the screen display, not only ensures the work efficiency of other request sources, but also does not need to increase FIFO, and the hardware becomes simple. This method is A simple, reliable, efficient and low-cost processing method.

Description

technical field [0001] The invention relates to a control method for accessing a display data area during screen display, and in particular proposes a solution to screen display errors caused by other request sources accessing the display data area at the same time during the row scanning process of the screen display. Background technique [0002] In the modern information age, the screen display is a very important key device in the process of human-computer interaction. In order to realize the screen display, the display controller needs to periodically read data from the display data area and output to the screen; at the same time, other request sources (such as CPU or other buses and electronic devices that can issue data read and write requests) may also Irregular reading and writing of the display data area, such reading and writing operations from other request sources to the same display data area, will cause conflicts, so that the display controller cannot obtain t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/34
Inventor 孙龙江中尧
Owner 孙龙
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