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Display output port anti-crosstalk method and device

An output port, anti-crosstalk technology, applied in the field of display screen, can solve the problems of mutual interference and affect the display effect, and achieve the effect of reducing signal crosstalk and improving EMI.

Active Publication Date: 2021-04-02
SHENZHEN SUNMOON MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In traditional display screens, when different OUT ports are turned on at the same time, the different OUT ports will interfere with each other, thus affecting the display effect.

Method used

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  • Display output port anti-crosstalk method and device
  • Display output port anti-crosstalk method and device
  • Display output port anti-crosstalk method and device

Examples

Experimental program
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Embodiment 1

[0030] figure 1 This is a flowchart of a method for preventing crosstalk at an output port of a display screen provided by Embodiment 1 of the present invention. like figure 1 As shown, the anti-crosstalk method for the output port of the display screen provided by the present invention includes the following steps:

[0031] Step S1, according to the sampling data, calculate the open width value of the output current of each port in one display sub-cycle;

[0032] Specifically, in an embodiment of the present invention, a 16-bit grayscale value can represent any data in the range of 0 to 65536 (2^16=65536). The width represents a level, then between two "frame change enable", 65535 (2^16=65536) global clocks are required to display all data completely. This is the case of 1 sweep. Assuming that the number of scanning lines is N, then between two "frame change enable", [65535*N] global clocks are required to display all data completely. Therefore, according to different fr...

Embodiment 2

[0043] Based on the same inventive concept, this embodiment discloses an anti-crosstalk device for an output port of a display screen, and the device includes:

[0044] The opening width value calculation module is used to calculate the opening width value of the output current of each port in one display sub-cycle according to the sampled data;

[0045] an on-off time point calculation module, configured to determine the port-on time point and the port-off time point of each port within one display sub-period according to the on-time setting value of the output current and the on-off width value; and

[0046] The port control module is configured to control the opening and closing of the corresponding port according to the opening time point of the port and the closing time point of the port.

[0047] In the device provided by the present invention, the set value X of the turn-on time is less than or equal to the effective number of global clocks in the display sub-cycle.

...

Embodiment 3

[0052] Based on the same inventive concept, this embodiment discloses an anti-crosstalk device for an output port of a display screen, including a processor and a memory, where the memory stores a computer program, and the computer program is implemented as described in the first embodiment when executed by the processor steps of the method.

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Abstract

The invention discloses a method for preventing crosstalk at an output port of a display screen, comprising the following steps: calculating the opening width of the output current of each port in a display sub-period according to sampling data; setting the value and the opening width according to the opening time of the output current , determine the port opening time point and port closing time point of each port in a display sub-period; then control the opening and closing of the corresponding port according to the port opening time point and port closing time point, so as to realize different OUT ports in one Different positions in the display cycle start to output current, but it does not affect the display time width; thereby avoiding the simultaneous opening of different ports, thereby reducing signal crosstalk on the display and improving EMI.

Description

technical field [0001] The present invention relates to the technical field of display screens, in particular to a method and a device for preventing crosstalk of display screen output ports by setting the output current to be turned on at any position within a display period. Background technique [0002] As a rapidly developing emerging industry, LED display, as an important way of information dissemination, has been widely used in advertising, stage background, traffic guidance and other fields. With the increasing demand for LED display in society, LED display technology is also constantly innovating. However, when different OUT ports are turned on at the same time in the traditional display screen, the different OUT ports will interfere with each other, thereby affecting the display effect. Therefore, a method is needed to solve the signal crosstalk between the OUT ports, thereby reducing the signal crosstalk on the display screen and improving the EMI. SUMMARY OF TH...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32
CPCG09G3/32
Inventor 陈克勇陆锡权李照华
Owner SHENZHEN SUNMOON MICROELECTRONICS
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