CN103500549A - Driving circuit and driving method of LED or nixie tube - Google Patents
Driving circuit and driving method of LED or nixie tube Download PDFInfo
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- CN103500549A CN103500549A CN201310423339.8A CN201310423339A CN103500549A CN 103500549 A CN103500549 A CN 103500549A CN 201310423339 A CN201310423339 A CN 201310423339A CN 103500549 A CN103500549 A CN 103500549A
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- 102100021133 Nuclear protein 1 Human genes 0.000 claims description 10
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Abstract
The invention provides a driving circuit of an LED or a nixie tube, which comprises a driving chip, and a data port and a common port for driving the LED or the nixie tube, wherein the driving chip comprises an IO end, and the data port is connected to the IO end of the driving chip through the common port. The invention also provides a driving method of the LED or the nixie tube. The invention has the beneficial effects that: the same nixie tube and the same LED are driven, fewer IO ports can be used, MCU pin resources are saved, and hardware cost is saved.
Description
Technical field
The present invention relates to driving circuit and the driving method thereof of a kind of LED or charactron.
Background technology
Charactron and LED lamp, as the operation demonstration of large small household appliances, are very general.Both drive principle are identical, below only take LED as example, and its driving method is described.The method that many driving LED are arranged in the market, all be divided into number
According to mouth (following old be the LED mouth) and public port (following old be com port).Drive more LED, need
Take a large amount of IO mouths.
Take that to drive 56 LED be example, as shown in Figure 3,4, is the most frequently used a kind of driving method at present, needs 15 IO drive 56 LED.This conventional drive scheme, COM1～COM8 mouth adopts and refreshes in turn, and the same time only has 1
Individual mouthful enables, when LED1～LED7 enables at each com port, refreshes corresponding data, com port and LED mouth
Control separately, to driving the pin demand more.
Summary of the invention
The present invention aims to provide driving circuit and the driving method of a kind of LED or charactron, can, with less IO mouth, drive more LED or charactron.
To achieve these goals, the present invention adopts following technical scheme:
The driving circuit of a kind of LED or charactron, comprise the data port and the public port that drive chip and drive described LED or charactron, described driving chip comprises the IO end, it is characterized in that, described data port is connected to the IO end of described driving chip by described public port.
Further, described data port is identical with the quantity of described public port.
Further, the quantity of the described LED of one of them port driver of described public port or charactron is less than the quantity of data port.
Further, to be less than the quantity of data port be 1 to the quantity of the described LED of one of them port driver of described public port or charactron.
Further, described data port and described public port are multiplexing, and described data port shields respectively corresponding LED or charactron.
Further, described data port is n, is respectively LED1 to LEDn, and described public port is n, is respectively COM1 to COMn, and described LED or charactron are that n* (n-1) is individual.
Further, the quantity that described data port shields respectively corresponding LED or charactron is individual for (n-1).
Further, described data port is 8, is respectively LED1 to LED8, and described public port is 8, is respectively COM1 to COM8, and described LED or charactron are 56.
Further, to shield respectively the quantity of corresponding LED or charactron be 7 to described data port.
The present invention also provides the driving method of a kind of LED or charactron.
Beneficial effect of the present invention: drive identical charactron and LED, can use less IO mouth, save MCU pin resource, save hardware cost.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of the driving circuit according to the present invention.
Fig. 2 is the theory diagram of the driving circuit according to the present invention.
Fig. 3 is the schematic diagram of existing driving circuit.
Fig. 4 is the theory diagram of existing driving circuit.
Embodiment
As shown in Figure 1, 2, the embodiment of the present invention provides the driving circuit of a kind of LED or charactron to comprise and has driven chip MCU, drives chip MCU to comprise IO end (IO1-IO8), data port (LED1-LED8) and public port (COM1-COM8).Data port (LED1-LED8) and public port (COM1-COM8) driving LED or charactron (LED12 to LED18, LED21, LED23 to 28, LED31 to 32, LED34 to LED 38, LED41 to 43, LED45 to 48, LED51 to 54, LED56 to 58, LED61 to 65, LED67 to 68, LED71 to 76, LED78, LED81 to 87), data port LED1 to LED8 is connected to and drives the IO1 to IO8 of chip to hold by public port COM1 to COM8 respectively.This scheme driving circuit can make COM1～COM8 and LED1～LED8 multiplexing, when a certain COM refreshes in turn, the LED mouth corresponding with it does not enable, the new corresponding data of other LED mouth brush.This scheme drives the pin demand less, can effectively utilize the IO mouth of MCU.Drive the chip I/O pin status mutually three state should be arranged: low level, high level and high-impedance state.
Data port of the present invention can be respectively LED1 to LEDn for n, and public port can be respectively COM1 to COMn for n, and LED or charactron are that n* (n-1) is individual, drives chip MCU to comprise that the IO end is for n.
The invention also discloses the driving method of a kind of LED or charactron, comprise the following steps, step 1, energising; Step 2, shadow data mouth LED1, refresh public port COM2-COMn, lights respectively corresponding LED or charactron; Step 3, shadow data mouth LED2, refresh public port COM1, COM3-COMn, lights respectively corresponding LED or charactron; Until, step n+1, shadow data mouth LEDn, refresh public port COM1-COM(n-1), light respectively corresponding LED or charactron.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the driving circuit of a LED or charactron, comprise the data port and the public port that drive chip and drive described LED or charactron, described driving chip comprises the IO end, it is characterized in that, described data port is connected to the IO end of described driving chip by described public port.
2. the driving circuit of a kind of LED as claimed in claim 1 or charactron, is characterized in that, described data port is identical with the quantity of described public port.
3. the driving circuit of a kind of LED as claimed in claim 2 or charactron, is characterized in that, the described LED of one of them port driver of described public port or the quantity of charactron are less than the quantity of data port.
4. the driving circuit of a kind of LED as claimed in claim 3 or charactron, is characterized in that, the quantity that the described LED of one of them port driver of described public port or the quantity of charactron are less than data port is 1.
5. the driving circuit of a kind of LED as claimed in claim 4 or charactron, is characterized in that, described data port and described public port are multiplexing, and described public port shields respectively corresponding LED or charactron.
6. the driving circuit of a kind of LED as claimed in claim 5 or charactron, is characterized in that, described data port is n, is respectively LED1 to LEDn, and described public port is n, is respectively COM1 to COMn, and described LED or charactron are that n* (n-1) is individual.
7. the driving circuit of a kind of LED as claimed in claim 6 or charactron, is characterized in that, the quantity that described data port shields respectively corresponding LED or charactron is that (n-1) is individual.
8. the driving circuit of a kind of LED as claimed in claim 6 or charactron, is characterized in that, described data port is 8, is respectively LED1 to LED8, and described public port is 8, is respectively COM1 to COM8, and described LED or charactron are 56.
9. the driving circuit of a kind of LED as claimed in claim 8 or charactron, is characterized in that, the quantity that described data port shields respectively corresponding LED or charactron is 7.
10. the driving method of a LED or charactron, comprise the following steps,
Step 1, energising;
Step 2, shadow data mouth LED1, refresh public port COM2-COMn, lights respectively corresponding LED or charactron;
Step 3, shadow data mouth LED2, refresh public port COM1, COM3-COMn, lights respectively corresponding LED or charactron;
………
Step n+1, shadow data mouth LEDn, refresh public port COM1-COM(n-1), light respectively corresponding LED or charactron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310423339.8A CN103500549A (en) | 2013-09-17 | 2013-09-17 | Driving circuit and driving method of LED or nixie tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310423339.8A CN103500549A (en) | 2013-09-17 | 2013-09-17 | Driving circuit and driving method of LED or nixie tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103500549A true CN103500549A (en) | 2014-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310423339.8A Pending CN103500549A (en) | 2013-09-17 | 2013-09-17 | Driving circuit and driving method of LED or nixie tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103761942A (en) * | 2014-02-14 | 2014-04-30 | 福州福大海矽微电子有限公司 | Digital tube display and key control chip with array display multiplexing algorithm |
| CN109326241A (en) * | 2018-07-23 | 2019-02-12 | 浙江绍兴苏泊尔生活电器有限公司 | Nixie tube display circuit and electric equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100949466B1 (en) * | 2009-10-16 | 2010-03-29 | 아이케이세미콘(주) | A driver for luminous element |
| CN202352298U (en) * | 2011-12-13 | 2012-07-25 | 无锡华润矽科微电子有限公司 | Display drive circuit structure for multi-sectional nixie tube |
| CN102800271A (en) * | 2012-08-15 | 2012-11-28 | 无锡华润矽科微电子有限公司 | Control method for multi-digit LED nixie tubes |
| CN103165058A (en) * | 2011-12-13 | 2013-06-19 | 无锡华润矽科微电子有限公司 | Multi-section nixie tube display drive circuit structure |
| CN203535931U (en) * | 2013-09-17 | 2014-04-09 | 浙江绍兴苏泊尔生活电器有限公司 | Drive circuit of LED or nixie tube |
-
2013
- 2013-09-17 CN CN201310423339.8A patent/CN103500549A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100949466B1 (en) * | 2009-10-16 | 2010-03-29 | 아이케이세미콘(주) | A driver for luminous element |
| CN202352298U (en) * | 2011-12-13 | 2012-07-25 | 无锡华润矽科微电子有限公司 | Display drive circuit structure for multi-sectional nixie tube |
| CN103165058A (en) * | 2011-12-13 | 2013-06-19 | 无锡华润矽科微电子有限公司 | Multi-section nixie tube display drive circuit structure |
| CN102800271A (en) * | 2012-08-15 | 2012-11-28 | 无锡华润矽科微电子有限公司 | Control method for multi-digit LED nixie tubes |
| CN203535931U (en) * | 2013-09-17 | 2014-04-09 | 浙江绍兴苏泊尔生活电器有限公司 | Drive circuit of LED or nixie tube |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103761942A (en) * | 2014-02-14 | 2014-04-30 | 福州福大海矽微电子有限公司 | Digital tube display and key control chip with array display multiplexing algorithm |
| CN103761942B (en) * | 2014-02-14 | 2015-09-30 | 福州福大海矽微电子有限公司 | The numeral method of tool array display multiplexing algorithm and key control chip |
| CN109326241A (en) * | 2018-07-23 | 2019-02-12 | 浙江绍兴苏泊尔生活电器有限公司 | Nixie tube display circuit and electric equipment |
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Application publication date: 20140108 |
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| RJ01 | Rejection of invention patent application after publication |