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Display control method and its device for LED display screen non-linear correction

A technology for an LED display screen and a display control method, which is applied to static indicators, instruments, etc., can solve the problems of high cost and complicated hardware circuits, and achieve the effect of enhancing the sense of hierarchy and increasing the distinguishable display gray level.

Inactive Publication Date: 2003-06-25
LEYARD
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  • Abstract
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  • Claims
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Problems solved by technology

Although the device can improve the display effect of the LED display device, it is very complicated in terms of hardware circuit and the cost is very high

Method used

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  • Display control method and its device for LED display screen non-linear correction
  • Display control method and its device for LED display screen non-linear correction
  • Display control method and its device for LED display screen non-linear correction

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Embodiment Construction

[0022] The non-linear correction display control method of LED display screen comprises the following steps: (1) constructing a non-linear correction curve; (2) forming non-linear correction data according to the constructed non-linear correction curve; (4) forming and storing a non-linear data storage table In the nonlinear memory, the data in the nonlinear memory is stored according to the data calculated by the nonlinear curve function; (5) Grayscale data reading and scanning: read all the grayscale data stored in the grayscale memory And scan, compare all the grayscale data with the address data of the non-linear memory, if it is greater than or equal to, output 1, otherwise output 0, and the scanning is completed in sequence. (6) Data sending: output the corrected gray scale data to the display screen.

[0023] Non-linear correction curve, similar to Y=KX r Type of function curve, where r is the nonlinear correction coefficient. According to the visual characteristics of...

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Abstract

The present invention provides one simple and convenient LED display screen nonlinearity correcting method and device. The technological scheme includes the following steps: constituting nonlinearity correcting curve; forming nonlinearity correcting data; forming nonlinearity memory list storing in nonlinearity memory, reading grey data and scanning; and sending corrected grey data to display screen. The device includes R, G and B grey input unit, R, G and B grey output unit and nonlinearity correcting chip in between.

Description

technical field [0001] The invention belongs to the technical field of LED display screens, in particular to a non-linear correction display control method and device for LED display screens. Background technique [0002] According to the spectral characteristics of LED light-emitting tubes, a monochromatic light-emitting tube can only emit light within a certain wavelength range. In LED display technology, we use the "addition principle" of red, green, and blue primary colors to obtain most of the light. Color natural light display effect, at the same time, due to the light-emitting spectrum characteristics of the LED light-emitting tube itself, such as the discontinuity of the spectrum, if a linear display is used, the obtained image will be too saturated, the definition will be reduced, and the layering will not be strong. The whole picture has a foggy feeling, and the color of the image is seriously distorted, which basically fails to meet the display requirements. To s...

Claims

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Application Information

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IPC IPC(8): G09G3/02G09G3/32
Inventor 耿伟夏兴伟
Owner LEYARD
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