CN108230992B - Method and device for driving light emitting tube matrix and storage medium - Google Patents

Method and device for driving light emitting tube matrix and storage medium Download PDF

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CN108230992B
CN108230992B CN201711432080.8A CN201711432080A CN108230992B CN 108230992 B CN108230992 B CN 108230992B CN 201711432080 A CN201711432080 A CN 201711432080A CN 108230992 B CN108230992 B CN 108230992B
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light
emitting tube
matrix
light emitting
driving
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CN108230992A (en
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张纲耀
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Qingdao Haier Technology Co Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Technology Co Ltd
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]

Abstract

The invention discloses a method and a device for driving a light emitting tube matrix and a storage medium, wherein the method comprises the following steps: determining the target gray level of the matrix luminescence of the luminotron; determining the light emitting state of each light emitting tube in the light emitting tube matrix according to the target gray level; and driving each light-emitting tube in the light-emitting tube matrix to light on or light off according to the light-emitting state of each light-emitting tube. The invention effectively solves the problem of high cost of the matrix gray scale display of the light emitting tube.

Description

Method and device for driving light emitting tube matrix and storage medium
Technical Field
The invention relates to the technical field of electronics, in particular to a method and a device for driving a light emitting tube matrix and a storage medium.
Background
The appearance of LED (Light Emitting Diode) matrix brings leap-type development to the display design of the product. In the existing LED driving control method, to achieve gray scale display of an LED matrix, cost is high and display is single due to limitation of MCU (micro controller Unit) resources in a control circuit.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks, the present invention provides a method, an apparatus and a storage medium for driving a light emitting tube matrix, so as to solve the problem of high cost of implementing gray scale display of the light emitting tube matrix.
In order to solve the above technical problem, a method for driving a light emitting tube matrix according to the present invention includes:
determining the target gray level of the matrix luminescence of the luminotron;
determining the light emitting state of each light emitting tube in the light emitting tube matrix according to the target gray level;
and driving each light-emitting tube in the light-emitting tube matrix to light on or light off according to the light-emitting state of each light-emitting tube.
In order to solve the above technical problem, the light emitting tube matrix driving apparatus in the present invention includes a storage module and a processing module, wherein the storage module stores a light emitting tube matrix driving computer program, and the processing module executes the computer program to implement the steps of the above method.
In order to solve the above technical problem, a computer-readable storage medium of the present invention stores a light emitting tube matrix driving computer program, which is executed by at least one processing module to implement the steps of the method as described above.
The invention has the following beneficial effects:
the invention effectively solves the problem of high cost of gray scale display of the luminous tube matrix by determining the target gray scale level of the luminous tube matrix, determining the luminous state of each luminous tube in the luminous tube matrix according to the target gray scale level and driving each luminous tube in the luminous tube matrix to be turned on or off according to the luminous state of each luminous tube.
Drawings
FIG. 1 is a flowchart of a method for driving a light emitting tube matrix according to an embodiment of the present invention;
FIG. 2 is a block diagram of a light emitting tube matrix driving system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a light emitting tube matrix driving device in an embodiment of the present invention.
Detailed Description
In order to solve the problems of the prior art, the present invention provides a method and an apparatus for driving a light emitting tube matrix, and a storage medium, and the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
Example one
An embodiment of the present invention provides a method for driving a light emitting tube matrix, as shown in fig. 1, the method includes:
s101, determining the target gray level of the matrix luminescence of the luminotron;
s102, determining the light emitting state of each light emitting tube in the light emitting tube matrix according to the target gray level;
and S103, driving each light-emitting tube in the light-emitting tube matrix to light on or light off according to the light-emitting state of each light-emitting tube.
According to the embodiment of the invention, the target gray level of the light emitted by the light emitting tube matrix is determined, the light emitting state of each light emitting tube in the light emitting tube matrix is determined according to the target gray level, and each light emitting tube in the light emitting tube matrix is driven to be turned on or turned off according to the light emitting state of each light emitting tube, so that the problem of high cost of gray level display of the light emitting tube matrix is effectively solved.
In the embodiment of the invention, each luminous tube in the luminous tube matrix can be driven to light on or light off through a preset driving circuit.
The light emitting tube in the embodiment of the invention can be an LED light emitting tube, the driving circuit in the embodiment of the invention can be an LED driving circuit, and the method in the embodiment of the invention can be executed in an MCU of an LED control circuit.
For example, as shown in fig. 2, a light emitting tube matrix driving system is composed of an LED control circuit including an MCU, an LED driving circuit, and an LED light emitting tube matrix, wherein the MCU executes the method in the embodiment of the present invention, so that the LED light emitting tube matrix emits light under the combined action of the LED control circuit and the LED driving circuit, and different LED light emitting tubes have different brightness; meanwhile, special resources of the MCU are not occupied, so that the MCU can not be limited by the MCU resources in the control circuit, the cost is reduced, and the display design of the product is simpler and more convenient.
On the basis of the above embodiment, a modification of the above embodiment is further proposed.
In this embodiment of the present invention, optionally, the determining the target gray level of light emitted by the light emitting tube matrix includes:
setting the gray scale number of the light emitting tube matrix for gray scale display;
and determining the target gray level of the light emitted by the light emitting tube matrix in the gray level number.
In the embodiment of the present invention, optionally, after driving each light emitting tube in the light emitting tube matrix according to the light emitting state of each light emitting tube, the method includes:
and driving the light emitting tube matrix to display the gray scale through a preset driving circuit according to the gray scale number.
The embodiment of the invention not only realizes the gray scale display of the luminous tube matrix, but also makes the display have more layering and makes the design of the product more concise and convenient; in addition, in the process of realizing the gray scale display of the luminous tube matrix, the driving control circuit is not controlled by the limitation of MCU resources in the control circuit, so that the design of the driving control circuit is more convenient, and the cost is low.
In the embodiment of the present invention, optionally, the determining, in the number of gray levels, a target gray level of light emitted by the light emitting tube matrix includes:
determining the number of times of matrix scanning of the light emitting tube according to the gray level number;
and setting the current scanning times as the target gray level of the light emitted by the light emitting tube matrix when the light emitting tube matrix is scanned each time.
In this embodiment of the present invention, optionally, after determining the light emitting states of the light emitting tubes in the light emitting tube matrix according to the target gray scale level, the method includes:
generating a gray level matrix of the light emitting tube matrix according to the gray level of each light emitting tube in the light emitting tube matrix;
and generating a light emitting state matrix of the light emitting tube matrix according to the light emitting state of each light emitting tube and the gray level matrix.
Wherein the target gray level is not less than 0 and not more than the number of gray levels; the luminous state comprises the on and off of the luminous tube.
For example, firstly, the gray scale number of the LED luminous tube matrix is determined to be 8, the corresponding gray scale level is from 0 to 7, wherein 0 is darkest, 7 is brightest, and the higher the numerical value is, the higher the brightness is represented; secondly, before each scanning is started, the gray scale (or brightness) of each LED in the LED matrix can be uniquely determined to form a gray scale matrix A; and then before each scanning, determining the on or off state of the LED in the scanning process according to the gray matrix A, thereby forming a light-emitting state matrix B.
Wherein the gray matrix a and the light-emitting state matrix B are respectively as follows:
Figure BDA0001525087190000041
element a in the grayscale matrix AijRepresenting the gray scale of the corresponding LED, the value range is more than or equal to 0 and less than or equal to aijLess than or equal to 7; element B of the matrix B of the emission statesijIs 0 or 1, 0 representsThe light emitting tube is off, and 1 indicates that the light emitting tube is on.
In the embodiment of the present invention, optionally, the driving, according to the light emitting states of the light emitting tubes, each light emitting tube in the light emitting tube matrix to be turned on or turned off includes:
and driving each light-emitting tube in the light-emitting tube matrix to light on or light off according to the light-emitting state matrix.
Example two
The embodiment of the invention provides a method for driving a light emitting tube matrix, and particularly, the method for controlling the driving circuit to enable LED light emitting tubes to emit light with different brightness according to different gray scales of the LED light emitting tubes in the LED light emitting tube matrix so as to control gray scale display of the LED light emitting tubes in the LED light emitting tube matrix comprises the following steps:
setting the gray scale number of the light emitting tube matrix for gray scale display;
determining the number of times of matrix scanning of the light emitting tube according to the gray level number;
and determining a light-emitting state matrix according to the gray matrix, namely determining the on or off condition of the light-emitting tube in the scanning.
And judging whether the preset scanning time is reached.
And when the scanning time reaches the time, driving the LED luminous tube matrix.
Judging whether the current scanning times reach preset scanning times or not;
if the scanning times are not reached, the next scanning is carried out;
and if the scanning times are reached, ending.
EXAMPLE III
An embodiment of the present invention provides a light emitting tube matrix driving device, as shown in fig. 3, where the driving device includes a storage module 20 and a processing module 22, the storage module 20 stores a light emitting tube matrix driving computer program, and the processing module 22 executes the computer program to implement the steps of the method in any one of the above embodiments.
In the embodiment of the present invention, optionally, the driving device is a micro control unit in the control circuit.
In detail, the processing module executes the computer program to implement the following steps:
determining the target gray level of the matrix luminescence of the luminotron;
determining the light emitting state of each light emitting tube in the light emitting tube matrix according to the target gray level;
and driving each light-emitting tube in the light-emitting tube matrix according to the light-emitting state of each light-emitting tube.
In this embodiment of the present invention, optionally, the determining the target gray level of light emitted by the light emitting tube matrix includes:
setting the gray scale number of the light emitting tube matrix for gray scale display;
and determining the target gray level of the light emitted by the light emitting tube matrix in the gray level number.
In the embodiment of the present invention, optionally, after driving each light emitting tube in the light emitting tube matrix according to the light emitting state of each light emitting tube, the method includes:
and driving the light emitting tube matrix to display the gray scale through a preset driving circuit according to the gray scale number.
In the embodiment of the present invention, optionally, the determining, in the number of gray levels, a target gray level of light emitted by the light emitting tube matrix includes:
determining the number of times of matrix scanning of the light emitting tube according to the gray level number;
and setting the current scanning times as the target gray level of the light emitted by the light emitting tube matrix when the light emitting tube matrix is scanned each time.
In this embodiment of the present invention, optionally, after determining the light emitting states of the light emitting tubes in the light emitting tube matrix according to the target gray scale level, the method includes:
generating a gray level matrix of the light emitting tube matrix according to the gray level of each light emitting tube in the light emitting tube matrix;
and generating a light emitting state matrix of the light emitting tube matrix according to the light emitting state of each light emitting tube and the gray level matrix.
In the embodiment of the present invention, optionally, the driving, according to the light emitting states of the light emitting tubes, each light emitting tube in the light emitting tube matrix to be turned on or turned off includes:
and driving each light-emitting tube in the light-emitting tube matrix to light on or light off according to the light-emitting state matrix.
In the embodiment of the present invention, optionally, the gray scale is not less than 0 and not more than the number of gray scales; the luminous state comprises the on and off of the luminous tube.
In the embodiment of the invention, reference can be also made to the first embodiment and the second embodiment, so that the corresponding technical effects are achieved.
Example four
An embodiment of the present invention provides a computer-readable storage medium, in which a light-emitting tube matrix driving computer program is stored, and the computer program is executed by at least one processing module to implement the steps of the method according to any one of the first embodiment and the second embodiment.
When the embodiment of the invention is specifically implemented, reference can be made to the above embodiments, and corresponding technical effects are achieved.
Computer-readable storage media in embodiments of the invention may be RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage media known in the art. A storage medium may be coupled to the processor such that the processor can read information from, and write information to, the storage medium; or the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (8)

1. A method of driving a matrix of light emitting tubes, the method comprising:
determining the target gray level of the matrix luminescence of the luminotron;
determining the light emitting state of each light emitting tube in the light emitting tube matrix according to the target gray level;
driving each light-emitting tube in the light-emitting tube matrix to be turned on or off according to the light-emitting state of each light-emitting tube;
the determining of the target gray level of the light emitted by the light emitting tube matrix further comprises:
setting the gray scale number of the light emitting tube matrix for gray scale display;
determining a target gray level of the light emitted by the light emitting tube matrix in the gray level;
determining the number of times of matrix scanning of the light emitting tube according to the gray level number;
and setting the current scanning times as the target gray level of the light emitted by the light emitting tube matrix when the light emitting tube matrix is scanned each time.
2. The light-emitting tube matrix driving method according to claim 1, wherein the driving of each light-emitting tube in the light-emitting tube matrix after turning on or off the light-emitting tube according to the light-emitting state of each light-emitting tube comprises:
and driving the light emitting tube matrix to display the gray scale through a preset driving circuit according to the gray scale number.
3. The light-emitting tube matrix driving method according to claim 1, wherein the determining the light-emitting state of each light-emitting tube in the light-emitting tube matrix according to the target gray-scale level comprises:
generating a gray level matrix of the light emitting tube matrix according to the gray level of each light emitting tube in the light emitting tube matrix;
and generating a light emitting state matrix of the light emitting tube matrix according to the light emitting state of each light emitting tube and the gray level matrix.
4. The method for driving the light-emitting tube matrix according to claim 1, wherein the driving of the light-emitting tubes in the light-emitting tube matrix to be turned on or off according to the light-emitting states of the light-emitting tubes specifically includes:
and driving each light-emitting tube in the light-emitting tube matrix to light on or light off according to the light-emitting state matrix.
5. The light emitting tube matrix driving method according to claim 1, wherein the target gray scale level is not less than 0 and not more than the number of gray scales.
6. A light emitting tube matrix driving device, comprising a storage module storing a light emitting tube matrix driving computer program and a processing module executing the computer program to implement the steps of the method according to any one of claims 1 to 5.
7. The device for driving a light emitting tube matrix according to claim 6, wherein the driving device is a micro control unit in a control circuit.
8. A computer-readable storage medium, characterized in that the storage medium stores a light emitting tube matrix driving computer program which, when executed by at least one processing module, implements the steps of the method according to any one of claims 1 to 5.
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