CN104333935A - Control circuit for displaying and controlling method for display device - Google Patents
Control circuit for displaying and controlling method for display device Download PDFInfo
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- CN104333935A CN104333935A CN201310309823.8A CN201310309823A CN104333935A CN 104333935 A CN104333935 A CN 104333935A CN 201310309823 A CN201310309823 A CN 201310309823A CN 104333935 A CN104333935 A CN 104333935A
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Abstract
The invention provides a control circuit for displaying, which comprises the components of a display device that comprises N LED lamps, wherein the N LED lamps are arranged in a matrix manner and furthermore the N LED lamps are arranged at cross point positions of the matrix, the anode of the LED lamp of each line/row in the matrix is connected with a first common end, and furthermore the cathode is connected with a second common end; and a control module, wherein the first output end of the control module is connected with each first common end, and the second output end of the control module is connected with each second common end. The control module controls the input signals of the first common ends and the second common ends for making the N LED lamps be lightened or extinguished. The control circuit for displaying according to the invention can drive more LED lamps through a relatively small control module, and can save resource and realizes low cost. The invention simultaneously provides a controlling method for the display device.
Description
Technical field
The present invention relates to kitchen guarding's technical field of electric appliances, particularly a kind of control circuit for showing, and a kind of control method of display unit.
Background technology
The existing normally each LED of LED for electromagnetic oven display needs two chip pins (negative pole and positive pole) to light to control LED, and when connecting pin difference output low level and the high level of LED negative pole and positive pole, LED is lit.As control N(N>=2) individual LED is when lighting, if each LED is driven by two chip pins, then need 2*N pin, if the negative pole of N number of LED or positive pole to be joined together to form common negative pole or common cathode circuit, then a N+1 chip pin driving N LED can be used.But, for needing the system driving more LED, chip pin resource-constrained, the situation that chip pin is not enough may be there is, even if use special driving chip to drive, also can take the chip pin of natively few driving chip.
In sum, the shortcoming that prior art exists is: when the driving inadequate resource of control chip, and the difficulty realizing driving more LED is comparatively large, also wastes the resource of control chip.In addition, realize the driving to more LED by replacing control chip such as single-chip microcomputer or increase driving chip, cost is higher.
Summary of the invention
Object of the present invention is intended to solve one of above-mentioned technical problem at least to a certain extent.
For this reason, one object of the present invention is to propose a kind of control circuit for showing, and this control circuit can drive more LED with the pin of less control module, can saving resource, and cost is low.
Another object of the present invention is the control method proposing a kind of display unit.
For achieving the above object, the embodiment of one aspect of the present invention proposes a kind of control circuit for showing, this control circuit comprises: display unit, described display unit comprises: N number of LED, described N number of LED is arranged in a matrix pattern and described N number of LED is arranged at the cross-point locations of described matrix, in described matrix, the positive pole of the LED of every row/column is all connected to first common port, and the negative pole of the LED often arranging in described matrix/often go all is connected to second common port; Control module, first output of described control module is connected with each described first common port respectively, second output of described control module is connected with each described second common port respectively, and described control module controls the input signal of described first common port and described second common port to make described N number of LED light on and off according to display.
According to the control circuit for showing of the embodiment of the present invention, arranged in a matrix pattern by N number of LED of display unit, thus control module can control more LED with less control end such as pin, can saving resource.In addition, this control circuit cost is lower.
Wherein, the LED being arranged at each cross-point locations of described matrix can be the LED of a LED or multiple parallel connection or series connection.
The LED arranging multiple parallel connection or series connection can strengthen display effect.
In one embodiment of the invention, described matrix crossing points is M, when described matrix crossing points quantity M for extraction of square root number time, described N number of LED with
matrix pattern arrange; And when the quantity M of described matrix crossing points is non-extraction of square root number, described N number of LED is row/column with m and is that the matrix pattern of column/row is arranged with n, and wherein, m and n is natural number, m*n>=M and m and n with minimum.
Wherein, described N number of LED is arranged described M matrix crossing points position mean allocation.
In another embodiment of the present invention, after control module to determine the position of described N number of LED according to idsplay order, described control module controls the positive pole input high level of the LED in described crosspoint and controls its negative pole input low level and light to make the LED be arranged on described crosspoint, and controls the positive pole input high level of the described LED be in beyond described crosspoint and negative pole input high level extinguishes to make described corresponding LED of going out.
In yet another embodiment of the present invention, described control module is also for controlling the alternately light on and off in Preset Time of described N number of LED.
For achieving the above object, the present invention's embodiment on the other hand proposes a kind of control method of display unit, display unit in this control method comprises: N number of LED, described N number of LED is arranged in a matrix pattern and described N number of LED is arranged at the cross-point locations of described matrix, in described matrix, the positive pole of the LED of every row/column is all connected to first common port, and the negative pole of the LED often arranging in described matrix/often go all is connected to second common port, described control method comprises the following steps: determine the corresponding bright or position of LED of going out according to idsplay order, and according to the described corresponding bright or position of LED of going out, the input signal controlling described first common port and described second common port is to make described N number of LED bright or go out.
According to the control method of the display unit of the embodiment of the present invention, shown by the display unit controlling to arrange in a matrix pattern, the LED controlling more display unit with less control end such as pin can be realized, can saving resource.In addition, control method of the present invention to realize cost lower.
In one embodiment of the invention, according to the described corresponding bright or position of LED of going out, the input signal controlling described first common port and described second common port specifically comprises to make described N number of LED light on and off: determine the described corresponding bright or position of LED of going out; Control the positive pole input high level of described corresponding bright LED and control its negative pole input low level and light to make described corresponding bright LED; And control the positive pole input high level of described corresponding LED of going out and control its negative pole input high level to make described corresponding LED extinguishing of going out.
In another embodiment of the present invention, the control method of above-mentioned display unit also comprises: control the alternately light on and off in Preset Time of described corresponding bright LED.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the schematic diagram of control circuit for showing according to the embodiment of the present invention;
Fig. 2 is the schematic diagram of the control circuit for showing according to an embodiment of the invention;
Fig. 3 is the schematic diagram of control circuit for showing according to another embodiment of the invention; And
Fig. 4 is the flow chart of the control method of display unit according to the embodiment of the present invention.
Reference numeral:
Display module 101 and control module 102.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it " on " structure can comprise the embodiment that the first and second features are formed as directly contact, also can comprise other feature and be formed in embodiment between the first and second features, such first and second features may not be direct contacts.
In describing the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
The control method for the control circuit that shows and a kind of display unit according to the embodiment of the present invention is described with reference to the accompanying drawings.
As shown in Figure 1, the embodiment of the present invention comprise display module 101 and control module 102 for the control circuit shown.Wherein, display unit 101 comprises N number of LED, N number of LED is arranged in a matrix pattern and N number of LED is arranged at the cross-point locations of matrix, in matrix, the positive pole of the LED of every row/column is all connected to first common port, and the negative pole of the LED often arranging in matrix/often go all is connected to second common port.First output of control module 102 is connected with each first common port respectively, second output of control module 102 is connected with each second common port respectively, and control module 102 controls the first common port and the second common port input signal according to display is to make N number of LED bright or go out.Such as in one embodiment of the invention, control module 102 can be single-chip microcomputer or driving chip, first output and second output of control module 102 are output pin, and the positive pole of output pin and LED and negative pole two ends are connected to control the input signal of N number of LED thus control the bright of LED or go out.
The control circuit employing arranged in matrix LED for showing of the embodiment of the present invention, can realize adopting the control pin of minimum control module 102 to drive more LED, usually, when a needs driving N LED, when wherein N is more than or equal to 4, just can adopt the method for matrix that circuit is set, the resource of control module 102 such as single-chip microcomputer can be saved.In one embodiment of the invention, determine the number of required matrix crossing points according to the quantity N of LED, the number of such as matrix crossing points is M, and when the quantity M of matrix crossing points is for extraction of square root number, N number of LED can be with
matrix pattern arrange, now only need
the pin of individual control module 102 such as single-chip microcomputer gets final product a driving N LED; In addition, when matrix crossing points quantity M be non-extraction of square root number time, N number of LED can be row/column with m and be that the matrix pattern of column/row is arranged with n, wherein, m and n is natural number, m*n>=M and m and n with minimum, the pin of m+n control module 102 such as single-chip microcomputer is now only needed to get final product a driving N LED, it should be noted that, wherein, N number of LED is arranged M matrix crossing points position mean allocation.Particularly, as shown in Figure 2, to drive 12 LED, each matrix crossing points establishes a lamp, crosspoint is 12, i.e. M=12, 12 is non-extraction of square root number, then can be row/column with m and be that the matrix pattern of column/row arranges 12 LED with n, the matrix pattern of to be such as row with m with n be row arranges this 12 lamps, wherein, m and n can select 1 and 12 respectively, 2 and 6, 3 and 4, the paired natural numbers such as 3 and 5, two natural products are all more than or equal to 12, i.e. 1*12 >=12, 2*6 >=12, 3*4 >=12, 3*5 >=12, 3+4 < 2+6=3+5 < 1+12 simultaneously, follow minimum principle, then 12 LED can be set with the matrix pattern of m*n=3*4, only need the pin of 7 control modules 102 such as single-chip microcomputer just passable, if and conventionally in circuit by single-chip microcomputer Direct driver, then need 24 pins or 13 pins, if driven with LED driving chip, then need to take 13 pins driven in hop count.Wherein, the positive pole of the LED often arranged all with the first corresponding common port such as the first common port 1, first common port 2 is connected respectively with the 3rd common port 3, first common port 1, first common port 2 can be connected with the first output of control module 102 with the 3rd common port 3, in addition, often go LED negative pole all with the second corresponding common port such as the second common port 4, second common port 5, second common port 6 is connected respectively with the second common port 7, second common port 4, second common port 5, second common port 6 can be connected with the second output of control module 102 such as single-chip microcomputer with the second common port 7.And as Fig. 3, the quantity N of LED is 24, matrix crossing points M is also 12, each crosspoint mean allocation 2 LED, then the type of drive of control circuit and identical in Fig. 2.
In one embodiment of the invention, control module 102 can determine the corresponding bright or position of LED of going out in N number of LED according to idsplay order, wherein, corresponding LED that is bright or that go out can be understood as the LED needing to light or keep the state of going out according to idsplay order, could be shown by the corresponding on and off controlling LED to the information of idsplay order.Such as idsplay order is display numeral " 8 ", then need corresponding LED to light some LED simultaneously and keep state of going out, thus can demonstrate numeral " 8 ".
Particularly, in another embodiment of the present invention, after control module 102 determines the corresponding bright or position of LED of going out, control module 102 controls the positive pole input high level of corresponding bright LED and controls its negative pole input low level and light to make corresponding bright LED, and controls the positive pole input high level of corresponding LED of going out and control its negative pole input high level and extinguish to make corresponding LED of going out.That is, when needs lightening LED lamp, control module 102 such as single-chip microcomputer only needs the position in the crosspoint of the matrix residing for idsplay order determination LED such as single-chip microcomputer only need determine the crosspoint of which two pin, then, the pin of the positive pole of this LED of Single-chip Controlling exports high level, and controlling the pin output low level of the negative pole of this LED, then the LED at this place will light.Particularly, as shown in Figure 2, as No. 6 LED lighted by needs, and No. 6 LED are in the crosspoint place of the first common port 2 and the second common port 5, then control module 102 such as single-chip microcomputer only need in the second output output low level be connected with the second common port 5 of second common port 5 place's output low level and control module 102, first output be connected with the first common port 2 of control module 102 exports high level, simultaneously with the first common port 1 and the first common port 3, and second common port 4, first output of the control module 102 that the second common port 6 is connected with the second common port 7 and the second output export high level, only can light No. 6 LED in 12 LED.In other words, such as, as No. 6 LED lighted by needs, then single-chip microcomputer only in the 5th pin place output low level, need export high level at the 2nd pin place, pin 4,6 and 7 is all exported high level simultaneously, only can light No. 6 LED in 12 LED.
In one embodiment of the invention, the LED being arranged at each cross-point locations of matrix can be the LED of a LED or multiple parallel connection or series connection, the LED arranging multiple parallel connection or series connection can strengthen the effect of display, can the quantity of the LED of each cross-point locations of selection matrix as required.Such as shown in Fig. 3, it is the schematic diagram that there are two LED in each crosspoint of the matrix in 12 crosspoints.
In another embodiment of the present invention, control module 102 controls the alternately light on and off in Preset Time of N number of LED.Preset Time here can be the extremely short time, can be understood as human eye cannot time of perception, according to the display characteristic of LED, controls LED and replace light on and off within the extremely short time, the state that Human Perception goes out less than LED, then LED is in the state always lighted in form.
In sum, according to the control circuit for showing of the embodiment of the present invention, by arranging N number of LED of display unit in a matrix pattern, thus control module can control more LED with less control end such as pin, can saving resource.In addition, the LED arranging multiple parallel connection or series connection in the crosspoint of matrix can strengthen display.And the cost of this control circuit is lower.
The control method of the display unit according to the embodiment of the present invention is described with reference to the accompanying drawings.
Wherein, display unit comprises N number of LED, N number of LED is arranged in a matrix pattern and N number of LED is arranged at the cross-point locations of matrix, in one embodiment of the invention, the number of required matrix crossing points can be determined according to the quantity N of LED, the number of such as matrix crossing points is M, when matrix crossing points quantity M for extraction of square root number time, N number of LED can be with
matrix pattern arrange, now only need
the pin of individual control module 102 such as single-chip microcomputer gets final product a driving N LED; In addition, when matrix crossing points quantity M be non-extraction of square root number time, N number of LED can be row/column with m and be that the matrix pattern of column/row is arranged with n, wherein, m and n is natural number, m*n>=M and m and n with minimum, the pin of m+n control module 102 such as single-chip microcomputer is now only needed to get final product a driving N LED, it should be noted that, wherein, N number of LED is arranged M matrix crossing points position mean allocation.In matrix, the positive pole of the LED of every row/column is all connected to first common port, and the negative pole of the LED often arranging in matrix/often go all is connected to second common port, and as shown in Figure 4, the control method of the display unit of the embodiment of the present invention comprises the following steps:
S401, determines the corresponding bright or position of LED of going out according to idsplay order.
Wherein, corresponding LED that is bright or that go out can be understood as the LED needing to light or keep the state of going out according to idsplay order, could be shown by the corresponding on and off controlling LED to the information of idsplay order.Such as idsplay order is display numeral " 8 ", then need corresponding LED to light some LED simultaneously and keep state of going out, thus can demonstrate numeral " 8 ".After determining that corresponding LED that is bright or that go out is in the position in the crosspoint of matrix, enter step S402.
S402, according to the corresponding bright or position of LED of going out, the input signal controlling the first common port and the second common port is to make N number of LED bright or go out.
In one embodiment of the invention, this step specifically comprises: according to the corresponding bright or position of LED of going out, control the positive pole input high level of corresponding bright LED and control its negative pole input low level and light to make corresponding bright LED, and control the positive pole input high level of corresponding LED of going out and control its negative pole input high level and extinguish to make corresponding LED of going out.That is, when needs lightening LED lamp, the crosspoint of two pins at this LED place in single-chip microcomputer is such as determined in the position in the crosspoint of the matrix residing for idsplay order determination LED, then, the pin controlling the positive pole of this LED exports high level, and controlling the pin output low level of the negative pole of this LED, then the LED at this place will light.Particularly, as shown in Figure 2, the positive pole of the LED often arranged of display unit 101 all with the first corresponding common port such as the first common port 1, first common port 2 is connected respectively with the 3rd common port 3, first common port 1, first common port 2 can be connected with the first output of control module 102 with the 3rd common port 3, in addition, often go LED negative pole all with the second corresponding common port such as the second common port 4, second common port 5, second common port 6 is connected respectively with the second common port 7, second common port 4, second common port 5, second common port 6 can be connected with the second output of control module 102 such as single-chip microcomputer with the second common port 7.As No. 6 LED lighted by needs, and No. 6 LED are in the crosspoint place of the first common port 2 and the second common port 5, the second output output low level that then only namely need be connected with the second common port 5 in the second common port 5 place output low level, the first output be connected with the first common port 2 exports high level, the first output be simultaneously connected with the first common port 1 and the first common port 3 and the second common port 4, second common port 6 and the second common port 7 and the second output export high level, only can light No. 6 LED in 12 LED.In other words, such as, as No. 6 LED lighted by needs, then only in the 5th pin place output low level, high level need be exported at the 2nd pin place, pin 4,6 and 7 all be exported high level simultaneously, only can light No. 6 LED in 12 LED.
In another embodiment of the present invention, the control method of above-mentioned display unit also comprises: control the alternately light on and off in Preset Time of corresponding bright LED.Preset Time here can be the extremely short time, can think for human eye cannot time of perception, according to the display characteristic of LED, within the extremely short time, control LED replace light on and off, the state that Human Perception goes out less than LED, then LED is in the state always lighted in form.
In sum, according to the control method of the display unit of the embodiment of the present invention, shown by the display unit controlling to arrange according to matrix pattern, the LED controlling more display unit with less control end such as pin can be realized, can saving resource.In addition, control method of the present invention to realize cost lower.
Describe and can be understood in flow chart or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
In flow charts represent or in this logic otherwise described and/or step, such as, the sequencing list of the executable instruction for realizing logic function can be considered to, may be embodied in any computer-readable medium, for instruction execution system, device or equipment (as computer based system, comprise the system of processor or other can from instruction execution system, device or equipment instruction fetch and perform the system of instruction) use, or to use in conjunction with these instruction execution systems, device or equipment.With regard to this specification, " computer-readable medium " can be anyly can to comprise, store, communicate, propagate or transmission procedure for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronic installation) with one or more wiring, portable computer diskette box (magnetic device), random-access memory (ram), read-only memory (ROM), erasablely edit read-only memory (EPROM or flash memory), fiber device, and portable optic disk read-only memory (CDROM).In addition, computer-readable medium can be even paper or other suitable media that can print described program thereon, because can such as by carrying out optical scanner to paper or other media, then carry out editing, decipher or carry out process with other suitable methods if desired and electronically obtain described program, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the application-specific integrated circuit (ASIC) of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalency thereof.
Claims (10)
1. the control circuit for showing, is characterized in that, comprising:
Display unit, described display unit comprises: N number of LED, described N number of LED is arranged in a matrix pattern and described N number of LED is arranged at the cross-point locations of described matrix, in described matrix, the positive pole of the LED of every row/column is all connected to first common port, and the negative pole of the LED often arranging in described matrix/often go all is connected to second common port;
Control module, first output of described control module is connected with each described first common port respectively, second output of described control module is connected with each described second common port respectively, and described control module controls described first common port and described second common port input signal according to idsplay order is to make described N number of LED bright or go out.
2. the control circuit for showing as claimed in claim 1, it is characterized in that, the LED being arranged at each cross-point locations of described matrix is the LED of a LED or multiple parallel connection or series connection.
3. the control circuit for showing as claimed in claim 1, is characterized in that, described matrix crossing points is M,
When the quantity M of described matrix crossing points be extraction of square root several time, described N number of LED with
matrix pattern arrange; And
When the quantity M of described matrix crossing points is non-extraction of square root several, described N number of LED is row/column with m and is that the matrix pattern of column/row is arranged with n, and wherein, m and n is natural number, m*n >=M and m and n with minimum.
4. the control circuit for showing as claimed in claim 3, is characterized in that, described N number of LED is arranged described M matrix crossing points position mean allocation.
5. the control circuit for showing as claimed in claim 1, is characterized in that, described control module is also for determining the corresponding bright or position of LED of going out in described N number of LED according to idsplay order.
6. the control circuit for showing as claimed in claim 5, it is characterized in that, after control module to determine the corresponding bright or position of LED of going out according to idsplay order, described control module controls the positive pole input high level of described corresponding bright LED and controls its negative pole input low level and light to make described corresponding bright LED, and controls the positive pole input high level of described corresponding LED of going out and control its negative pole input high level and extinguish to make described corresponding LED of going out.
7. the control circuit for showing as claimed in claim 1, is characterized in that, described control module is also for controlling the alternately light on and off in Preset Time of described N number of LED.
8. the control method of a display unit, it is characterized in that, described display unit comprises: N number of LED, described N number of LED is arranged in a matrix pattern and described N number of LED is arranged at the cross-point locations of described matrix, in described matrix, the positive pole of the LED of every row/column is all connected to first common port, and the negative pole of the LED often arranging in described matrix/often go all is connected to second common port, described control method comprises the following steps:
The corresponding bright or position of LED of going out is determined according to idsplay order; And
According to the described corresponding bright or position of LED of going out, the input signal controlling each described first common port and each described second common port is to make described N number of LED bright or go out.
9. the control method of display unit as claimed in claim 8, it is characterized in that, be in the position in the crosspoint of described matrix according to described corresponding LED that is bright or that go out, the input signal controlling each described first common port and each described second common port specifically comprises to make described N number of LED light on and off:
Determine the described corresponding bright or position of LED of going out;
Control the positive pole input high level of described corresponding bright LED and control its negative pole input low level and light to make described corresponding bright LED; And
Control the positive pole input high level of described corresponding LED of going out and control its negative pole input high level to make described corresponding LED extinguishing of going out.
10. the control method of display unit as claimed in claim 8, is characterized in that, also comprise:
Control the alternately light on and off in Preset Time of described corresponding bright LED.
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| CN201310309823.8A CN104333935A (en) | 2013-07-22 | 2013-07-22 | Control circuit for displaying and controlling method for display device |
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| CN201310309823.8A CN104333935A (en) | 2013-07-22 | 2013-07-22 | Control circuit for displaying and controlling method for display device |
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| CN203378108U (en) * | 2013-07-22 | 2014-01-01 | 美的集团股份有限公司 | Control circuit used for display |
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Application publication date: 20150204 |