Method and device for improving stroboflash of serial LEDs

Abstract

The invention discloses a method and device for improving stroboflash of serial LEDs, and belongs to the technical field of electronics, and the method comprises the following steps: a data refreshing stage and a data stability maintaining stage; the method is simple and reliable through a random refreshing method, occupies small resources, and does not lose any display data; after the refreshing is realized through a random algorithm, the refreshing interval is random and irregular, the overall refreshing frequency is reduced, the data display is more stable, the discarded total length is limited by the algorithm, the refreshing failure phenomenon is avoided, and no side effect exists; the device adopts the method for improving the stroboflash of the serial LEDs to carry out LED data bit counting, randomly select a refresh interval and adjust a hold time counter. According to the invention, the problem of stroboflash of serial LEDs is solved.

Description

Technical Field

[0001] The invention belongs to the field of electronic technology, and in particular relates to a method and a device for improving the stroboscopic performance of serial LEDs. Background Art

[0002] LED light boards are the most common display output devices for electronic devices. In order to save signal pins, serial signals are often used to drive LED light boards. Today's Ethernet chips and switch chips generally support the output of serial LED code streams, which can be used directly to drive LED light boards. Under normal circumstances, there should be no interference between LED lights, but when there are a large number of LED lights and they are closely arranged, the mutual influence between the LED lights can be recognized by the naked eye.

[0003] The flashing frequencies of adjacent LED lights are close but not exactly the same, so the brightness will be superimposed on each other, and the phase difference of the LED lights will change over time, resulting in periodic changes in the amplitude of the superimposed brightness. This phenomenon is similar to the beating of river water or waves, which is the beat frequency phenomenon. Industrial-grade electronic equipment has a large number of LED lights, and the positions are arranged relatively closely. When there is traffic on the Ethernet interface, the LED will flash. If the flashing frequency exceeds the maximum flashing frequency of the Ethernet chip and the switching chip, the LED flashing effect will be difficult to be perceived by the naked eye, and the naked eye will feel that it is in a low-brightness and always-on state. Therefore, it is necessary to avoid the beat frequency phenomenon caused by the overall refresh frequency of the LED light board being close to the maximum flashing frequency of the Ethernet chip and the switching chip. It is also necessary to avoid the overall refresh frequency of the LED light board being too high, which will lead to the beat frequency phenomenon being aggravated after reaching an integer multiple of the maximum flashing frequency of the Ethernet chip and the switching chip. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a method and device for improving the stroboscopic performance of serial LEDs, which solves the stroboscopic performance of serial LEDs.

[0005] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0006] On the one hand, the present invention provides a method for improving serial LED stroboscopic performance, comprising a data refresh phase and a data stabilization maintenance phase;

[0007] The data refresh phase includes the following steps:

[0008] A1. Start bit counting from LED data output to get the bit counting result;

[0009] A2, determine whether the bit counting result is greater than or equal to the total number of bits of LED data, if so, go to B1, otherwise go to A3;

[0010] A3, continue to execute the output of the current bit of LED data, and add 1 to the bit count result as the new bit count result, and return to A2;

[0011] The data stabilization maintenance stage includes the following steps:

[0012] B1, randomly select a refresh interval and set the hold time counter to zero;

[0013] B2, determine whether the hold time counter is greater than or equal to the refresh interval, if so, return to A1, otherwise go to B3;

[0014] B3. Increase the hold time counter by 1 and return to B2.

[0015] The beneficial effects of the present invention are as follows: the method for improving the serial LED stroboscopic effect proposed by the present invention is simple and reliable through a random refresh method, occupies little resources, and does not lose any display data; after the refresh is implemented through a random algorithm, the refresh interval is random and irregular, the overall refresh number is reduced, the data display is more stable, the total length discarded is limited by the algorithm, refresh failure will not occur, and there are no side effects.

[0016] On the other hand, the present invention further provides a device for improving serial LED stroboscopic performance, which uses the method for improving serial LED stroboscopic performance to count LED data bits, randomly select a refresh interval, and adjust a holding time counter.

[0017] The beneficial effects of the present invention are as follows: a device for improving serial LED flicker provided by the present invention is a device corresponding to the above-mentioned method for improving serial LED flicker, which is used to count LED data bits, randomly select refresh intervals and adjust the hold time counter so that the LED lights in the serially connected LED light board no longer have the flicker phenomenon during operation, thereby improving the stability of visual experience.

[0018] Other advantages of the present invention will be analyzed in more detail in subsequent embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 The present invention is a flowchart of a method for improving the stroboscopic performance of serial LEDs according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0022] Due to the periodicity of the serial LED data output and the periodicity of the serial LED light display, there is a high probability that coupling will occur, thereby exacerbating the visual perception of LED strobing. In order to avoid coupling, the scheme of the present invention introduces a random factor in the LED display refresh mechanism, that is, the LED data refresh interval is random, which can effectively avoid the formation of a beat between the LED data change frequency and the refresh frequency, and the human eye will not feel the low-frequency strobing phenomenon caused by the overall refresh of the LED light.

[0023] like Figure 1 As shown, in one embodiment of the present invention, the present invention provides a method for improving serial LED stroboscopic performance, comprising a data refresh phase and a data stable holding phase;

[0024] The data refresh phase includes the following steps:

[0025] A1. Start bit counting from LED data output to get the bit counting result;

[0026] A2, determine whether the bit counting result is greater than or equal to the total number of bits of LED data, if so, go to B1, otherwise go to A3;

[0027] A3, continue to execute the output of the current bit of LED data, and add 1 to the bit count result as the new bit count result, and return to A2;

[0028] The data stabilization maintenance stage includes the following steps:

[0029] B1, randomly select a refresh interval and set the hold time counter to zero;

[0030] B2, determine whether the hold time counter is greater than or equal to the refresh interval, if so, return to A1, otherwise go to B3;

[0031] B3. Increase the hold time counter by 1 and return to B2.

[0032] The present invention also provides a device for improving serial LED stroboscopic performance. The device adopts the method for improving serial LED stroboscopic performance to count LED data bits, randomly select a refresh interval, and adjust a holding time counter.

[0033] In a practical example of the present invention, in the data refresh stage: the bit output frequency of the LED data for controlling the on and off of the LED lamp is 5 MHz, the duration of each bit is 200 ps, ​​and the LED data output bit counting task and the LED lamp lighting task of each bit are executed from the LED data output until the bit counting result is greater than or equal to the total number of bits of the LED data, and then the data stable holding stage is entered; in the data stable holding stage: the initialization holding time counter is equal to 0, the time interval of the LED data for controlling the on and off of the LED lamp is 20 ms, and the refresh interval is randomly selected between [20 ms, 100 ms], and when the holding time counter is greater than or equal to the refresh interval, the data refresh stage is returned, the LED data output is bit counted again, and the above process is repeated, so that when the light flashing frequency range is approximately between [5 Hz, 50 Hz], the frequency beat phenomenon can be completely eliminated by using the scheme of the present invention, thereby making the visual experience more stable.

[0034] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for improving serial LED stroboscopic performance, characterized in that: It includes the data refresh phase and the data stability maintenance phase; The data refresh phase includes the following steps: A1. Start bit counting from LED data output to get the bit counting result; A2, determine whether the bit counting result is greater than or equal to the total number of bits of LED data, if so, go to B1, otherwise go to A3; A3, continue to execute the output of the current bit of LED data, and add 1 to the bit count result as the new bit count result, and return to A2; The data stabilization maintenance stage includes the following steps: B1, randomly select a refresh interval and set the hold time counter to zero; B2, determine whether the hold time counter is greater than or equal to the refresh interval, if so, return to A1, otherwise go to B3; B3. Increase the hold time counter by 1 and return to B2.

2. A device for improving serial LED stroboscopic performance, characterized in that: The method for improving serial LED stroboscopic frequency as claimed in claim 1 is used to count LED data bits, randomly select a refresh interval and adjust a holding time counter.

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