CN203378108U - Control circuit used for display - Google Patents
Control circuit used for display Download PDFInfo
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- CN203378108U CN203378108U CN201320438807.4U CN201320438807U CN203378108U CN 203378108 U CN203378108 U CN 203378108U CN 201320438807 U CN201320438807 U CN 201320438807U CN 203378108 U CN203378108 U CN 203378108U
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- led lamp
- matrix
- control module
- common port
- control circuit
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Abstract
The utility model provides a control circuit used for a display comprising a display device comprising N LED lamps. The N LED lamps are arranged in a matrix mode, and are disposed on cross point positions of the matrix. Anodes of the LED lamps of each row/column of the matrix are connected with a first public end, and cathodes of the LED lamps of each row/column of the matrix are connected with a second public end. A first output end of a control module is respectively connected with the first public ends, and a second end of the control module is respectively connected with the second public ends. The control module can be used to control input signals of the first public ends and the second public ends to turn on or off the N LED lamps according to display commands. The control circuit used for the display is advantageous in that the pins of the small control module can be used to drive a plurality of LED lamps, and therefore the resources can be saved, and the costs are low.
Description
Technical field
The utility model relates to kitchen guarding's technical field of electric appliances, particularly a kind of control circuit for showing.
Background technology
Have now the LED lamp that shows for electromagnetic oven normally each LED lamp need two chip pins (negative pole and positive pole) to light to control the LED lamp, when connecting LED lamp negative pole and anodal pin respectively when output low level and high level, the LED lamp is lit.When controlling N(N >=2) individual LED lamp is while lighting, if each LED lamp is driven by two chip pins, need 2*N pin, if the negative pole of N LED lamp or positive pole are joined together to form to common negative pole or common cathode circuit, can use a N+1 chip pin driving N LED lamp.But, for the system of the more LED lamp of demand motive, the situation that chip pin is not enough, may appear in the chip pin resource-constrained, even drive with special-purpose driving chip, also can take the original chip pin with regard to few driving chip.
In sum, the shortcoming that prior art exists is: when the driving inadequate resource of control chip, realize that the difficulty that more LED lamp is driven is larger, the resource of also wasting control chip.In addition, by changing for example single-chip microcomputer or increase and drive chip to realize that cost is higher to the driving of more LED lamp of control chip.
The utility model content
The purpose of this utility model is intended to solve at least to a certain extent one of above-mentioned technical problem.
For this reason, the purpose of this utility model is to propose a kind of control circuit for showing, this control circuit can drive with the pin of less control module more LED lamp, can saving resource, and cost is low.
For achieving the above object, the utility model proposes a kind of control circuit for showing, this control circuit comprises: display unit, described display unit comprises: N LED lamp, described N LED lamp is arranged at the position, crosspoint of described matrix with matrix pattern setting and described N LED lamp, in described matrix, the positive pole of the LED lamp of every row/column all is connected in first common port, and in described matrix, the negative pole of the LED lamp of every row/every row all is connected in second common port; Control module, the first output of described control module is connected with each described first common port respectively, the second output of described control module is connected with each described second common port respectively, and described control module is controlled the input signal of described the first common port and described the second common port so that described N LED lamp on/off according to display.
According to the control circuit for showing of the present utility model, N the LED lamp by display unit be with the matrix pattern setting, thus control module can with less control end for example pin control more LED lamp, can saving resource.In addition, this control circuit cost is lower.
Wherein, the LED lamp that is arranged at each position, crosspoint of described matrix can be the LED lamp of a LED lamp or a plurality of parallel connection or series connection.
The LED lamp that a plurality of parallel connections or series connection are set can strengthen display effect.
Further, described matrix crosspoint is M, when described matrix crosspoint quantity M during for the extraction of square root number, described N LED lamp with
the matrix pattern setting; And when the quantity M in described matrix crosspoint be non-extraction of square root while counting, described N LED lamp be take the matrix pattern setting that m is column/row as row/column and the n of take, wherein, m and n are natural number, m*n>=M and m and n's and minimum.
Wherein, described N LED lamp arranges in position, described M matrix crosspoint mean allocation.
Particularly, after determining the position of described N LED lamp according to idsplay order in control module, described control module control described crosspoint the LED lamp anodal input high level and control its negative pole input low level so that the LED lamp be arranged on described crosspoint lights, and the anodal input high level of the described LED lamp beyond controlling in described crosspoint and negative pole input high level so that the described corresponding LED lamp gone out extinguish.
Preferably, described control module is also for controlling the alternately light on and off in Preset Time of described N LED lamp.
The aspect that the utility model is additional and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
The accompanying drawing explanation
Above-mentioned and/or the additional aspect of the utility model and advantage will become from the following description of the accompanying drawings of embodiments and obviously and easily understand, wherein:
Fig. 1 is the schematic diagram according to the control circuit for demonstration of the utility model embodiment;
Fig. 2 is the schematic diagram according to the control circuit for demonstration of an embodiment of the present utility model; And
Fig. 3 is the schematic diagram according to the control circuit for demonstration of another embodiment of the present utility model.
Reference numeral:
Embodiment
Below describe embodiment of the present utility model in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label means same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
Disclosing hereinafter provides many different embodiment or example to be used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter parts and the setting of specific examples are described.Certainly, they are only example, and purpose does not lie in restriction the utility model.In addition, the utility model can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and purpose clearly, itself do not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the utility model provides and the example of material, but those of ordinary skills can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, First Characteristic described below Second Characteristic it " on " structure can comprise that the first and second Characteristics creations are for the direct embodiment of contact, also can comprise the embodiment of other Characteristics creation between the first and second features, such the first and second features may not be direct contacts.
In description of the present utility model, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection, can be also the connection of two element internals, can be directly to be connected, and also can indirectly be connected by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
The control circuit for showing according to the utility model embodiment is described with reference to the accompanying drawings.
As shown in Figure 1, the control circuit for showing of the utility model embodiment comprises display module 101 and control module 102.Wherein, display unit 101 comprises N LED lamp, N LED lamp is arranged at the position, crosspoint of matrix with matrix pattern setting and N LED lamp, in matrix, the positive pole of the LED lamp of every row/column all is connected in first common port, and in matrix, the negative pole of the LED lamp of every row/every row all is connected in second common port.The first output of control module 102 is connected with each first common port respectively, the second output of control module 102 is connected with each second common port respectively, and control module 102 is controlled the input signal of the first common port and the second common port so that N LED lamp is bright or go out according to display.For example, in an embodiment of the present utility model, control module 102 can or drive chip for single-chip microcomputer, the first output and second output of control module 102 are output pin, thereby output pin and the positive pole of LED lamp are connected to control the input signal of N LED lamp with the negative pole two ends, control the bright of LED lamp or go out.
The control circuit for showing of the utility model embodiment adopts arranged in matrix LED lamp, can realize adopting the control pin of minimum control module 102 to drive more LED lamp, usually, when demand motive N LED lamp, when wherein N is more than or equal to 4, just can adopt the method for matrix that circuit is set, can save for example resource of single-chip microcomputer of control module 102.In an embodiment of the present utility model, determine the number in needed matrix crosspoint according to the quantity N of LED lamp, for example the number in matrix crosspoint is M, as the quantity M in matrix crosspoint during for the extraction of square root number, N LED lamp can with
the matrix pattern setting, now only need
the individual control module 102 for example pin of single-chip microcomputer gets final product a driving N LED lamp; In addition, when the matrix crosspoint quantity M be that non-extraction of square root is while counting, N LED lamp can be take the matrix pattern setting that m is column/row as row/column and the n of take, wherein, m and n are natural number, m*n>=M and m and n's and minimum, for example the pin of single-chip microcomputer can a driving N LED lamp now only to need m+n control module 102, it should be noted that, wherein, N LED lamp arranges in position, M matrix crosspoint mean allocation.Particularly, as shown in Figure 2, take that to drive 12 LED lamps be example, a lamp is established in each matrix crosspoint, crosspoint is 12, be M=12, 12 is non-extraction of square root number, the matrix pattern that the m of can take is column/row as row/column and the n of take arranges 12 LED lamps, the m of for example take be take n as row and is that the matrix pattern of row arranges this 12 lamps, wherein, m and n can select respectively 1 and 12, 2 and 6, 3 and 4, the paired natural numbers such as 3 and 5, two natural products all are more than or equal to 12, be 1*12 >=12, 2*6 >=12, 3*4 >=12, 3*5 >=12, while 3+4<2+6=3+5<1+12, follow minimum principle, 12 LED lamps can be set with the matrix pattern of m*n=3*4, for example the pin of single-chip microcomputer is just passable only to need 7 control modules 102, if and directly driven by single-chip microcomputer according to circuit of the prior art, need 24 pins or 13 pins, if drive chip drives with the LED lamp, need to take 13 pins that drive in hop count.Wherein, the positive pole of the LED lamp of every row all with corresponding the first common port the first common port 1 for example, the first common port 2 is connected respectively with the 3rd common port 3, the first common port 1, the first common port 2 can be connected with the first output of control module 102 with the 3rd common port 3, in addition, the negative pole of the LED lamp of every row all with corresponding the second common port the second common port 4 for example, the second common port 5, the second common port 6 is connected respectively with the second common port 7, the second common port 4, the second common port 5, the second common port 6 and the second common port 7 can with control module 102 for example the second output of single-chip microcomputer be connected.And, as Fig. 3, the quantity N of LED lamp is 24, matrix crosspoint M is also 12,2 LED lamps of each crosspoint mean allocation, identical with in Fig. 2 of the type of drive of control circuit.
In an embodiment of the present utility model, control module 102 can be determined according to idsplay order the position of the corresponding bright or LED lamp that goes out in N LED lamp, wherein, corresponding bright or LED lamp that go out can be understood as the LED lamp that need to light or keep the state of going out according to idsplay order, by the corresponding on and off of controlling the LED lamp, could the information of idsplay order be shown.For example idsplay order, for showing numeral " 8 ", needs corresponding LED lamp to light some LED lamps simultaneously and keeps the state that goes out, thereby can demonstrate numeral " 8 ".
Particularly, in another embodiment of the present utility model, after control module 102 is determined the position of the corresponding bright or LED lamp that goes out, control module 102 is controlled the anodal input high level of corresponding bright LED lamp and is controlled its negative pole input low level so that corresponding bright LED lamp lights, and controls the anodal input high level of the corresponding LED lamp gone out and control its negative pole input high level so that the corresponding LED lamp gone out extinguishes.That is to say, when the needs lightening LED lamp, control module 102 for example single-chip microcomputer only need to according to idsplay order determine the residing matrix of LED lamp crosspoint position for example single-chip microcomputer only need determine the crosspoint of any two pins, then, the pin output high level of the positive pole of this LED lamp of Single-chip Controlling, and control the pin output low level of the negative pole of this LED lamp, the LED lamp at this place will light.Particularly, as shown in Figure 2, as needs are lighted the LED lamp No. 6, and No. 6 crosspoint places of LED lamp in the first common port 2 and the second common port 5, control module 102 for example single-chip microcomputer need in second common port 5 place's output low levels, be only the second output output low level be connected with the second common port 5 of control module 102, the first output output high level be connected with the first common port 2 of control module 102, simultaneously with the first common port 1 and the first common port 3, and second common port 4, the 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 output high level, can only light No. 6 LED lamps in 12 LED lamps.In other words, for example, as needs are lighted the LED lamp No. 6, single-chip microcomputer only need at the 2nd pin place output high level, all be exported high level to pin 4,6 and 7 in the 5th pin place output low level, can only light No. 6 LED lamps in 12 LED lamps simultaneously.
In an embodiment of the present utility model, the LED lamp that is arranged at each position, crosspoint of matrix can be the LED lamp of a LED lamp or a plurality of parallel connection or series connection, the LED lamp that a plurality of parallel connections or series connection are set can strengthen the effect of demonstration, as required the quantity of the LED lamp of each position, crosspoint of selection matrix.For example, shown in Fig. 3, be the schematic diagram that there are two LED lamps in each crosspoint of the matrix in 12 crosspoints.
In another embodiment of the present utility model, control module 102 is controlled the alternately light on and off in Preset Time of N LED lamp.The Preset Time here can be the extremely short time, can be understood as the time that human eye cannot perception, according to the display characteristic of LED lamp, control the LED lamp and replace light on and off within the extremely short time, the state that Human Perception goes out less than the LED lamp, the LED lamp state in light always in form.
In sum, according to the control circuit for showing of the utility model embodiment, by N LED lamp of display unit is set with matrix pattern, thus control module can with less control end for example pin control more LED lamp, can saving resource.In addition, the LED lamp that a plurality of parallel connections or series connection is set in the crosspoint of matrix can strengthen demonstration.And the cost of this control circuit is lower.
Each functional unit in each embodiment of the utility model can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module usings that the form of software function module realizes and during as production marketing independently or use, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that in the situation that do not break away from principle of the present utility model and spirit can be carried out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is by claims and be equal to and limit.
Claims (7)
1. the control circuit for showing, is characterized in that, comprising:
Display unit, described display unit comprises: N LED lamp, described N LED lamp is arranged at the position, crosspoint of described matrix with matrix pattern setting and described N LED lamp, in described matrix, the positive pole of the LED lamp of every row/column all is connected in first common port, and in described matrix, the negative pole of the LED lamp of every row/every row all is connected in second common port;
Control module, the first output of described control module is connected with each described first common port respectively, the second output of described control module is connected with each described second common port respectively, and described control module is controlled the input signal of described the first common port and described the second common port so that described N LED lamp is bright or go out according to idsplay order.
2. the control circuit for showing as claimed in claim 1, is characterized in that the LED lamp that the LED lamp that is arranged at each position, crosspoint of described matrix is a LED lamp or a plurality of parallel connection or series connection.
3. the control circuit for showing as claimed in claim 1, is characterized in that, described matrix crosspoint is M,
As the quantity M in described matrix crosspoint when to be extraction of square root several, described N LED lamp with
the matrix pattern setting; And
As the quantity M in described matrix crosspoint when to be non-extraction of square root several, described N LED lamp be take the matrix pattern setting that m is column/row as row/column and the n of take, and wherein, m and n are natural number, m*n >=M and m and n's and minimum.
4. the control circuit for showing as claimed in claim 3, is characterized in that, described N LED lamp arranges in position, described M matrix crosspoint 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 position of the corresponding bright or LED lamp that goes out of described N LED lamp according to idsplay order.
6. the control circuit for showing as claimed in claim 5, it is characterized in that, determine the position of the corresponding bright or LED lamp that goes out according to idsplay order in control module after, described control module is controlled the anodal input high level of described corresponding bright LED lamp and is controlled its negative pole input low level so that described corresponding bright LED lamp lights, and controls the anodal input high level of the described corresponding LED lamp gone out and control its negative pole input high level so that the described corresponding LED lamp gone out extinguishes.
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 LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320438807.4U CN203378108U (en) | 2013-07-22 | 2013-07-22 | Control circuit used for display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320438807.4U CN203378108U (en) | 2013-07-22 | 2013-07-22 | Control circuit used for display |
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|---|---|
| CN203378108U true CN203378108U (en) | 2014-01-01 |
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| CN201320438807.4U Expired - Fee Related CN203378108U (en) | 2013-07-22 | 2013-07-22 | Control circuit used for display |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333935A (en) * | 2013-07-22 | 2015-02-04 | 美的集团股份有限公司 | Control circuit for displaying and controlling method for display device |
| CN111970786A (en) * | 2020-08-21 | 2020-11-20 | 浙江优纳特科学仪器有限公司 | Control method and system of block type indicator light matrix and block type indicator light matrix |
-
2013
- 2013-07-22 CN CN201320438807.4U patent/CN203378108U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333935A (en) * | 2013-07-22 | 2015-02-04 | 美的集团股份有限公司 | Control circuit for displaying and controlling method for display device |
| CN111970786A (en) * | 2020-08-21 | 2020-11-20 | 浙江优纳特科学仪器有限公司 | Control method and system of block type indicator light matrix and block type indicator light matrix |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20210722 |