CN105023534A - Multiplexing circuit for key input and nixie tube driving, refrigerator and electronic apparatus - Google Patents
Multiplexing circuit for key input and nixie tube driving, refrigerator and electronic apparatus Download PDFInfo
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- CN105023534A CN105023534A CN201510450648.3A CN201510450648A CN105023534A CN 105023534 A CN105023534 A CN 105023534A CN 201510450648 A CN201510450648 A CN 201510450648A CN 105023534 A CN105023534 A CN 105023534A
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Abstract
The invention discloses a multiplexing circuit for key input and nixie tube driving, a refrigerator and an electronic apparatus, wherein the circuit comprises at least a nixie tube, driving chips used for driving the nixie tube display and key units set corresponding to the number of the nixie tube; the nixie tube has a public port and multiple segment ports; the driving chips comprise driving ports corresponding to the number of the public ports and segment control ports corresponding to the number of segment ports; the public ports of the nixie tube and the driving ports of the driving chips are connected, and each segment port of the nixie tube is connected to the corresponding segment control port of the driving chip; the key units comprise at least an adjusting end, and the adjusting end of the key unit is connected to the segment control port of the driving chip that is connected to the nixie tube; the segment control port is used to input the trigger signal of the key unit and output the driving signal for driving the the chip driving nixie tube display. In the invention, the utilization rate of the I/O port of the driving chip is increased, and the I/O port of the driving chip is saved.
Description
Technical field
The present invention relates to electronic circuit technology field, particularly a kind of key-press input and charactron drive multiplex circuit, refrigerator and electronic equipment.
Background technology
At present, in the home appliances such as refrigerator, electromagnetic oven and micro-wave oven, be substantially all adopt charactron to carry out the current operational factor of display device.Wherein, charactron is driven by driving chip, and corresponding configuration has key circuit to carry out optimum configurations.But in this circuit, because the pin of charactron is more, the I/O mouth of required driving chip is just relatively many, and key circuit also needs to take a part of I/O mouth, like this, in actual applications, when the button configured is more, just there will be the situation of the I/O mouth shortage of driving chip.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of key-press input and charactron drives multiplex circuit, is intended to the utilization factor of the I/O mouth improving driving chip.
For achieving the above object, the present invention proposes a kind of key-press input and charactron drives multiplex circuit, and this key-press input and charactron drive multiplex circuit to comprise at least one charactron, push-button unit for driving the driving chip of described numeral method and corresponding described charactron quantity to arrange; Described charactron has public port and multiple segmentation port; Described driving chip comprises the Discrete control port that the driving port corresponding with described public port quantity and corresponding described segmentation port number are arranged; The public port of described charactron is connected with the driving port of described driving chip, and the Discrete control port that each segmentation port of described charactron is corresponding with on described driving chip connects; Described push-button unit comprises at least one adjustment end, the adjustment end of described push-button unit is connected with the Discrete control port being connected with described charactron of described driving chip, described Discrete control port, for inputting the trigger pip of described push-button unit, and export the drive singal that described driving chip drives described numeral method.
Preferentially, described push-button unit comprises rise branch road and lowers branch road, and the adjustment end of described rise branch road is connected with a Discrete control port of described driving chip, and the adjustment end of described downward branch road is connected with another Discrete control port of described driving chip; Wherein, described rise branch road or downward branch road are for exporting the trigger pip for described driving chip adjustment equipment current operating parameter.
Preferentially, described rise branch road comprises the first power supply, the first resistance, the second resistance and the first button, one end of described first resistance is connected with described first power supply, and the other end of described first resistance is successively through described second resistance, the first button ground connection; One end that described first resistance is connected with described second resistance is the adjustment end of described rise branch road; Described downward branch road comprises the second power supply, the 3rd resistance, the 4th resistance and the second button, and one end of described 3rd resistance is connected with described second power supply, and the other end of described 3rd resistance is successively through described 4th resistance, the second button ground connection; One end that described 3rd resistance is connected with described 4th resistance is the adjustment end of described downward branch road.
Preferentially, described first power supply and the second power supply are same power supply.
Preferentially, described driving chip be connected with the first current-limiting resistance between each Discrete control port and segmentation port of corresponding charactron.
Preferentially, described driving chip each Discrete control port and corresponding rise branch road and lower between branch road and be connected with the second current-limiting resistance.
Preferentially, described first current-limiting resistance has the first end that the Discrete control port corresponding with on described driving chip connects and the second end be connected with segmentation port corresponding on described charactron, and the second end of the first current-limiting resistance that the Discrete control port that the adjustment end of described rise branch road is corresponding with on described driving chip connects connects; Second end of the first current-limiting resistance that the Discrete control port that the adjustment end of described downward branch road is corresponding with on described driving chip connects connects.。
Preferentially, described charactron is common anode pole charactron.
The present invention also provides a kind of refrigerator, described refrigerator comprises key-press input as above and charactron drives multiplex circuit, and described key-press input and charactron drive multiplex circuit to comprise at least one charactron, push-button unit for driving the driving chip of described numeral method and corresponding described charactron quantity to arrange; Described charactron has public port and multiple segmentation port; Described driving chip comprises the Discrete control port that the driving port corresponding with described public port quantity and corresponding described segmentation port number are arranged; The public port of described charactron is connected with the driving port of described driving chip, and the Discrete control port that each segmentation port of described charactron is corresponding with on described driving chip connects; Described push-button unit comprises at least one adjustment end, the adjustment end of described push-button unit is connected with the Discrete control port being connected with described charactron of described driving chip, described Discrete control port, for inputting the trigger pip of described push-button unit, and export the drive singal that described driving chip drives described numeral method.
The present invention also provides a kind of electronic equipment, described electronic equipment comprises key-press input described above and charactron drives multiplex circuit, and described key-press input and charactron drive multiplex circuit to comprise at least one charactron, push-button unit for driving the driving chip of described numeral method and corresponding described charactron quantity to arrange; Described charactron has public port and multiple segmentation port; Described driving chip comprises the Discrete control port that the driving port corresponding with described public port quantity and corresponding described segmentation port number are arranged; The public port of described charactron is connected with the driving port of described driving chip, and the Discrete control port that each segmentation port of described charactron is corresponding with on described driving chip connects; Described push-button unit comprises at least one adjustment end, the adjustment end of described push-button unit is connected with the Discrete control port being connected with described charactron of described driving chip, described Discrete control port, for inputting the trigger pip of described push-button unit, and export the drive singal that described driving chip drives described numeral method.
The present invention is by arranging charactron, driving chip and push-button unit, and the segmentation port of charactron and the Discrete control port of driving chip are connected one to one, the public port of charactron is connected with the driving port of driving chip, and is connected with the Discrete control port being connected with charactron of driving chip by the adjustment end of push-button unit; Operationally, driving chip drives numeral method parameter by Discrete control port output drive signal, when push-button unit output key trigger pip, the button trigger pip of the Discrete control port input press key unit output of driving chip, and corresponding adjustment display parameter, and be shown on charactron; So, just achieving the same Discrete control port of the segmentation port common drive chip of push-button unit and charactron, this improves the Discrete control port of driving chip, is also the utilization factor of I/O mouth.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram that key-press input of the present invention and charactron drive multiplex circuit preferred embodiment;
Fig. 2 drives the electrical block diagram of multiplex circuit for the key-press input shown in Fig. 1 and charactron.
Drawing reference numeral illustrates:
| Label | Title | Label | Title |
| 100 | Driving chip | R4 | 4th resistance |
| 200 | Push-button unit | R5 | 5th resistance |
| 300 | Charactron | R6 | 6th resistance |
| segA | First Discrete control port | R7 | 7th resistance |
| segB | Second Discrete control port | R8 | 8th resistance |
| segC | 3rd Discrete control port | R9 | 9th resistance |
| segD | 4th Discrete control port | R10 | Tenth resistance |
| segE | 5th Discrete control port | R11 | 11 resistance |
| segF | 6th Discrete control port | COM1 | First public port |
| segG | 7th Discrete control port | COM2 | Second public port |
| 10 | Raise branch road | LED1 | First Digital sum pipe |
| 20 | Lower branch road | LED2 | Second charactron |
| K1 | First button | a | First segmentation port |
| K2 | Second button | b | Second segmentation port |
| S1 | First drives port | c | 3rd segmentation port |
| S2 | Second drives port | d | 4th segmentation port |
| VCC | First power supply | e | 5th segmentation port |
| R1 | First resistance | f | 6th segmentation port |
| R2 | Second resistance | g | 7th segmentation port |
| R3 | 3rd resistance |
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Be described further with regard to technical scheme of the present invention below in conjunction with drawings and the specific embodiments.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The present invention proposes a kind of key-press input and charactron drives multiplex circuit, is applicable in the home electronics such as various electronic equipment, particularly refrigerator, air-conditioning, micro-wave oven, below for ease of understanding, is specifically described in various embodiments of the present invention for refrigerator.
With reference to Fig. 1 and Fig. 2, in an embodiment of the present invention, this key-press input and charactron drive multiplex circuit to comprise at least one charactron 300, push-button unit 200 for driving the driving chip 100 of numeral method and corresponding described charactron quantity to arrange; Described charactron 300 has public port and multiple segmentation port; Described driving chip 100 comprises the Discrete control port that the driving port corresponding with described public port quantity and corresponding described segmentation port number are arranged; The public port of described charactron 300 is connected with the driving port of described driving chip 100, and the Discrete control port that each segmentation port of described charactron 300 is corresponding with on described driving chip 100 connects; Described push-button unit 200 comprises at least one adjustment end, the adjustment end of described push-button unit 200 is connected with the Discrete control port being connected with described charactron 300 of described driving chip 100, described Discrete control port, for the trigger pip of described push-button unit 200 is inputed to driving chip 100, and export the drive singal that described driving chip 100 drives described charactron 300 to show.
During work, driving chip 100 passes through to drive port and segmentation port output drive signal, to drive charactron 300 display parameter.When push-button unit 200 triggers, output key trigger pip, this button trigger pip inputs to this driving chip 100 by the Discrete control port being connected with described charactron 300 of driving chip 100, the parameter in current driving chip 100 is adjusted according to described button trigger pip to make driving chip 100, can be raise or lower, after having adjusted, driving chip 100 is according to the parameter arranged, configure corresponding Discrete control port output drive signal, the parameter after adjustment is shown to drive charactron 300, so, just the same Discrete control port of the segmentation port common drive chip 100 of push-button unit 200 and charactron 300 is achieved, therefore, just improve the utilization factor of the Discrete control port (I/O mouth) of driving chip 100, and then can circuit cost be saved.
In the present embodiment, charactron 300 can be used for display device operational factor; Push-button unit 200 adjusts the trigger pip of equipment current operating parameter for described driving chip 100 for exporting.The quantity of charactron 300 can be one, also can be multiple, in practical application, the demand of corresponding device is arranged, such as, this charactron 300 is applied to refrigerator, during temperature for one or more reefer of display refrigerator, then may correspond to each reefer and a charactron 300 is set, for the temperature of display reefer.It should be noted that, when charactron 300 is multiple, each public port of each charactron 300 and each driving port of driving chip 100 connect one to one, and the same Discrete control port of the segmentation port and driving chip 100 that each charactron 300 show same section is connected.Wherein, charactron 300 can adopt common cathode charactron or common anode pole charactron to realize, and adopts common anode pole charactron in this preferred embodiment.Wherein, charactron 300 can also be one or multidigit nixie tube 300, and when adopting multidigit nixie tube 300, the public port of each charactron 300 connects separately the driving port of a driving chip 100, the same function segmentation port (showing the port of identical section) of each multidigit nixie tube 300 can be connected with the same Discrete control port of driving chip 100, also can be, the Discrete control port that the same function segmentation port of each multidigit nixie tube 300 is different from driving chip 100 connects, and does not limit herein; Certainly, in order to save the Discrete control port of driving chip 100, the present embodiment preferably adopts front a kind of embodiment.Such as, in circuit as shown in Figure 2, described charactron 300 is double figures code pipe, and quantity is two.This double figures code pipe 300 comprises the first public port COM1, the second public port COM2, the first segmentation port a, the second segmentation port b, the 3rd segmentation port c, the 4th segmentation port d, the 5th segmentation port e, the 6th segmentation port f and the 7th segmentation port g.Wherein, the first Digital sum pipe LED1 in this double figures code pipe 300 and second charactron LED2 includes seven light emitting diodes (without radix point), i.e. seven display sections of corresponding charactron 300.Wherein, the anode interconnect of seven light emitting diodes in the first Digital sum pipe LED1, form the first public port COM1 of double figures code pipe 300, the anode interconnect of seven light emitting diodes in second charactron LED2, form the second public port COM2 of double figures code pipe 300; The cathode interconnect of the same display section corresponding to seven light emitting diodes in second charactron LED2 of seven light emitting diodes in the first Digital sum pipe LED1, to form the described first to the 7th segmentation port.In this embodiment, driving chip 100 exports high level signal by driving port, Discrete control port output low level signal, to the first to the 7th corresponding segmentation port, is lighted to control corresponding light emitting diode, is demonstrated different characters to make charactron 300.
Above-mentioned driving chip 100 can comprise driving port and the Discrete control port of any amount, in the preferred embodiment, described driving chip 100 comprises the first Discrete control port segA, the second Discrete control port segB, the 3rd Discrete control port segC, the 4th Discrete control port segD, the 5th Discrete control port segE, the 6th Discrete control port segF, the 7th Discrete control port segG, the first driving port S1, the second driving port S2.
In the preferred embodiment, charactron 300 is double figures code pipe, can refer to Fig. 2, first Discrete control port segA of described driving chip 100 is connected with the first segmentation port a of charactron 300, second Discrete control port segB of described driving chip 100 is connected with the second segmentation port b of charactron 300, described driving chip 100 the 3rd Discrete control port segC is connected with the 3rd segmentation port c of charactron 300, 4th Discrete control port segD of described driving chip 100 is connected with the 4th segmentation port d of charactron 300, 5th Discrete control port segE of described driving chip 100 is connected with the 5th segmentation port e of charactron 300, 6th Discrete control port segF of described driving chip 100 is connected with the 6th segmentation port f of charactron 300, 7th Discrete control port segG of described driving chip 100 is connected with the 7th segmentation port g of charactron 300.
In this embodiment, the first Digital sum pipe LED1 and second charactron LED2 adopts dynamic driving, and driving chip 100 takes turns common port COM1 and the common port COM2 of each LED charactron of current control by timesharing, just makes each charactron timesharing show.The lighting time of every bit charactron is 1 ~ 2 millisecond, and just can ensure that the numeral that each numeral method goes out is stable, human eye can not see scintillation, and this is because the visual persistence phenomenon of people and the afterglow effect of light-emittingdiode determine.
Above-mentioned push-button unit 200 can be the circuit realizing arbitrarily its button Trigger Function, can be used for the operational factor of rise equipment, also can lower the operational factor of equipment.Illustrate below in conjunction with refrigerator, in a preferred embodiment, this refrigerator has reefer and refrigerating chamber, push-button unit comprise rise branch road 10 for raising temperature of refrigerating chamber, for lower temperature of refrigerating chamber downward branch road 20, for raising the rise branch road 10 of freezer temperature and the downward branch road 20 for lowering freezer temperature.In this embodiment, the mode that totalizer can be adopted at every turn to add 1 realizes temperature regulating, and the mode at every turn being subtracted 1 by subtracter realizes lower temperature regulating.
Corresponding to cold compartment of refrigerator, raising branch road 10 and lowering branch road 20 to adopt following circuit structure as shown in Figure 2 to realize, raise branch road 10 and comprise the first power supply VCC, the first resistance R1, the second resistance R2 and the first button K1, the first end of described first resistance R1 is connected with described first power supply VCC, second end of described first resistance R1 is connected with the first end of described first button K1 by the second resistance R2, the second end ground connection of described first button K1; Described downward branch road 20 comprises the second power supply (Fig. 2 is not shown), the 3rd resistance R3, the 4th resistance R4 and the second button K2, the first end of described 3rd resistance R3 is connected with described first power supply VCC, second end of described 3rd resistance R3 is connected with the first end of described second button K2 by the 4th resistance R4, the second end ground connection of described second button K2.One end that described 3rd resistance R3 is connected with described 4th resistance R4 is the adjustment end of described downward branch road.Wherein, described first resistance R1, the 3rd resistance R3 are pull-up resistor, can avoid key jitter.Wherein, the second resistance R2, the 4th resistance R4 are current-limiting resistance.It should be noted that, described first power supply VCC can be different power supplies from the second power supply, the same power supply of power supply that also can be different, and a kind of embodiment after preferably adopting in this embodiment, as Fig. 2.
When the first button K1 presses, first power supply VCC export power supply successively through the first resistance R1, the second resistance R2 and the first button K1 to, form current return, now, the level of the common port of the first resistance R1 and the second resistance R2 is clamped at a metastable value (high level), after exporting a Discrete control port of driving chip 100 to, just can realize button Trigger Function.
Corresponding to freezer compartment of refrigerator rise branch road 30 with lower the circuit structure of branch road 40 and implement principle and raise branch road 10 in cold compartment of refrigerator and tie and lower the circuit structure of branch road 20 and to implement principle consistent, can refer in cold compartment of refrigerator and raise the embodiment realization that branch road 20 was tied and lowered to branch road 10, repeat no more herein.
Based on above-described embodiment, in embodiment further, each Discrete control port of described driving chip 100 is connected with the first current-limiting resistance with between the segmentation port of corresponding charactron 300; Each Discrete control port of described driving chip 100 and corresponding rise branch road 10 and lower between branch road 20 and be connected with the second current-limiting resistance.Such as, in embodiment as shown in Figure 2, described first current-limiting resistance has seven, and is respectively the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10 and the 11 resistance R11.Wherein, first segmentation port a of described charactron 300 is connected with the first Discrete control port segA of described driving chip 100 by the 5th resistance R5, second segmentation port b of described charactron 300 is connected with the second Discrete control port segB of described driving chip 100 by the 6th resistance R6,3rd segmentation port c of described charactron 300 is connected with the 3rd Discrete control port segC of described driving chip 100 by the 7th resistance R7,4th segmentation port d of described charactron 300 is connected with the 4th Discrete control port segD of described driving chip 100 by the 8th resistance R8,5th segmentation port e of described charactron 300 is connected with the 5th Discrete control port segE of described driving chip 100 by the 9th resistance R9,6th segmentation port f of described charactron 300 is connected with described driving chip 100 the 6th Discrete control port segF by the tenth resistance R10,7th segmentation port g of charactron 300 is connected with the 7th Discrete control port segG of described driving chip 100 by the 11 resistance R11.
In this embodiment, the quantity correspondence of the second current-limiting resistance raises branch road 10 and lowers the quantity setting of branch road 20; It is worth mentioning that, the second current-limiting resistance and the first current-limiting resistance can be same current-limiting resistance, as shown in Figure 2, like this, can simplify circuit structure, save circuit cost.It should be noted that, when the second current-limiting resistance and the first current-limiting resistance are same current-limiting resistance, described first current-limiting resistance has the first end that the Discrete control port corresponding with on described driving chip 100 connects and the second end be connected with segmentation port corresponding on described charactron 300, and the second end of the first current-limiting resistance that the Discrete control port that the adjustment end of described rise branch road is corresponding with on described driving chip 100 connects connects.Particularly, as shown in Figure 2, the adjustment end raising branch road 10 is connected with second end of the 8th resistance R8, and is connected with the Discrete control port segD of driving chip 100 by the 8th resistance R8; The adjustment end lowering branch road 20 is connected with second end of the 9th resistance R9, is connected with the Discrete control port segE of driving chip 100 by the 9th resistance R9.
With reference to accompanying drawing 1 and Fig. 2, and in conjunction with above-described embodiment, below circuit theory of the present invention is further elaborated:
During work, driving chip 100 passes through to drive port and segmentation port output drive signal, to drive charactron 300 display device (such as, refrigerator) current operating parameter.When push-button unit 200 triggers, output key trigger pip, this button trigger pip inputs to this driving chip 100 by the Discrete control port being connected with described charactron 300 of driving chip 100, the parameter in current driving chip 100 is adjusted according to described button trigger pip to make driving chip 100, can be raise or lower, after adjustment completes, driving chip 100 is according to the parameter after adjustment, configure corresponding Discrete control port and export corresponding drive singal, the parameter after adjustment is shown to drive charactron 300, such as, when cold compartment of refrigerator needs lower temperature regulating, then press the second button K2, the the first power supply VCC lowering branch road 20 connects with ground, now, the high level clamper exported by first power supply VCC by the 3rd resistance R3 and the 4th resistance R4 is a metastable value, and exported by the common port of the 3rd resistance R3 and the 4th resistance R4, this signal is by the 9th resistance R9, this driving chip 100 is inputed to after the Discrete control port segE of driving chip 100, parameter is adjusted to trigger driving chip 100, simultaneously, the high level signal that the common port of the 3rd resistance R3 and the 4th resistance R4 exports also exports charactron 300 to, make the segmentation port e of charactron 300 correspondence to be also high level, now the public port of charactron 300 is high level, the light emitting diode that then segmentation port e is corresponding with between public port is not luminous, stops display parameter, after unclamping the second button K2, the common port of the 3rd resistance R3 and the 4th resistance R4 is low level, on driving chip 100 without impact, now, driving chip 100 is according to the parameter after adjustment, configure corresponding Discrete control port and export control level signal, by the parameter display after adjustment on charactron 300.So, just the same Discrete control port of the segmentation port common drive chip 100 of push-button unit 200 and charactron 300 is achieved, thus improve the utilization factor of the Discrete control port (I/O mouth) of driving chip 100, when needing the driving chip 100 using more Discrete control port in circuit performance history, without the need to changing the driving chip 100 of more Discrete control ports, and then circuit cost can be saved.
In addition, the present invention also provides a kind of refrigerator, and this refrigerator can also be the home electronics such as air conditioner, electric cooker; This refrigerator comprises key-press input described above and charactron drives multiplex circuit, and described key-press input and charactron drive the detailed construction of multiplex circuit to can refer to above-described embodiment, repeat no more herein; Be understandable that, owing to employing above-mentioned key-press input and charactron drives multiplex circuit in refrigerator, therefore, the embodiment of this refrigerator comprises whole technical schemes that above-mentioned key-press input and charactron drive the whole embodiment of multiplex circuit, and the technique effect reached is also identical, does not repeat them here.
Should be noted that; the technical scheme of each embodiment of the present invention can be combined with each other; but must be can be embodied as basis with those skilled in the art; when technical scheme combination occur conflicting maybe cannot realize time will be understood that the combination of this technical scheme does not exist, also not within the protection domain of application claims.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure transformation utilizing instructions of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. key-press input and charactron drive a multiplex circuit, are characterised in that, comprise at least one charactron, for driving the push-button unit of the driving chip of described numeral method and corresponding described charactron quantity setting; Described charactron has public port and multiple segmentation port; Described driving chip comprises the Discrete control port that the driving port corresponding with described public port quantity and corresponding described segmentation port number are arranged; The public port of described charactron is connected with the driving port of described driving chip, and the Discrete control port that each segmentation port of described charactron is corresponding with on described driving chip connects; Described push-button unit comprises at least one adjustment end, the adjustment end of described push-button unit is connected with the Discrete control port being connected with described charactron of described driving chip, described Discrete control port, for inputting the trigger pip of described push-button unit, and export the drive singal that described driving chip drives described numeral method.
2. key-press input as claimed in claim 1 and charactron drive multiplex circuit, it is characterized in that, described push-button unit comprises rise branch road and lowers branch road, the adjustment end of described rise branch road is connected with a Discrete control port of described driving chip, and the adjustment end of described downward branch road is connected with another Discrete control port of described driving chip; Wherein, described rise branch road or downward branch road are for exporting the trigger pip for described driving chip adjustment equipment current operating parameter.
3. key-press input as claimed in claim 2 and charactron drive multiplex circuit, it is characterized in that, described rise branch road comprises the first power supply, the first resistance, the second resistance and the first button, one end of described first resistance is connected with described first power supply, and the other end of described first resistance is successively through described second resistance, the first button ground connection; One end that described first resistance is connected with described second resistance is the adjustment end of described rise branch road; Described downward branch road comprises the second power supply, the 3rd resistance, the 4th resistance and the second button, and one end of described 3rd resistance is connected with described second power supply, and the other end of described 3rd resistance is successively through described 4th resistance, the second button ground connection; One end that described 3rd resistance is connected with described 4th resistance is the adjustment end of described downward branch road.
4. key-press input as claimed in claim 3 and charactron drive multiplex circuit, and it is characterized in that, described first power supply and the second power supply are same power supply.
5. key-press input as claimed in claim 3 and charactron drive multiplex circuit, it is characterized in that, described driving chip be connected with the first current-limiting resistance between each Discrete control port and segmentation port of corresponding charactron.
6. key-press input as claimed in claim 5 and charactron drive multiplex circuit, it is characterized in that, each Discrete control port of described driving chip and corresponding rise branch road and lower between branch road and be connected with the second current-limiting resistance.
7. key-press input as claimed in claim 5 and charactron drive multiplex circuit, it is characterized in that, described first current-limiting resistance has the first end that the Discrete control port corresponding with on described driving chip connects and the second end be connected with segmentation port corresponding on described charactron, and the second end of the first current-limiting resistance that the Discrete control port that the adjustment end of described rise branch road is corresponding with on described driving chip connects connects; Second end of the first current-limiting resistance that the Discrete control port that the adjustment end of described downward branch road is corresponding with on described driving chip connects connects.
8. key-press input as claimed in claim 1 and charactron drive multiplex circuit, and it is characterized in that, described charactron is common anode pole charactron.
9. a refrigerator, is characterized in that, described refrigerator comprises key-press input described in any one of claim 1-8 and charactron drives multiplex circuit.
10. an electronic equipment, is characterized in that, described electronic equipment comprises key-press input described in any one of claim 1-8 and charactron drives multiplex circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510450648.3A CN105023534A (en) | 2015-07-24 | 2015-07-24 | Multiplexing circuit for key input and nixie tube driving, refrigerator and electronic apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510450648.3A CN105023534A (en) | 2015-07-24 | 2015-07-24 | Multiplexing circuit for key input and nixie tube driving, refrigerator and electronic apparatus |
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| CN105023534A true CN105023534A (en) | 2015-11-04 |
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| CN201510450648.3A Pending CN105023534A (en) | 2015-07-24 | 2015-07-24 | Multiplexing circuit for key input and nixie tube driving, refrigerator and electronic apparatus |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106683604A (en) * | 2017-03-22 | 2017-05-17 | 佛山市顺德区携创电机制造有限公司 | LED display and key detection multiplexing circuit |
| CN106710498A (en) * | 2017-03-23 | 2017-05-24 | 何义植 | LED (Light Emitting Diode) digital display circuit with programmable control pin and method thereof |
| CN107154238A (en) * | 2017-07-11 | 2017-09-12 | 深圳市同洁科技有限公司 | A kind of electric toothbrush LED dot matrix display devices |
| CN107369403A (en) * | 2017-09-07 | 2017-11-21 | 广东美的暖通设备有限公司 | Button display method and charactron |
| CN109347483A (en) * | 2018-11-30 | 2019-02-15 | 珠海巨晟科技股份有限公司 | A kind of control circuit of touch controlled key and the shared IO of charactron |
| CN110401452A (en) * | 2018-04-25 | 2019-11-01 | 深圳市致行科技有限公司 | Button multiplexing circuit and its button multiplexing method |
| CN110444137A (en) * | 2019-08-15 | 2019-11-12 | 重庆川仪速达机电有限公司 | A kind of multidigit nixie tube display driver circuit and its control method |
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| WO2022166696A1 (en) * | 2021-02-02 | 2022-08-11 | 德沃康科技集团有限公司 | Electric height-adjustable desk controller and electric height-adjustable desk |
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| CN106683604B (en) * | 2017-03-22 | 2020-07-21 | 广东携创电机有限公司 | Multiplexing processing circuit for L ED display and key detection |
| CN106683604A (en) * | 2017-03-22 | 2017-05-17 | 佛山市顺德区携创电机制造有限公司 | LED display and key detection multiplexing circuit |
| CN106710498A (en) * | 2017-03-23 | 2017-05-24 | 何义植 | LED (Light Emitting Diode) digital display circuit with programmable control pin and method thereof |
| CN107154238A (en) * | 2017-07-11 | 2017-09-12 | 深圳市同洁科技有限公司 | A kind of electric toothbrush LED dot matrix display devices |
| CN107369403B (en) * | 2017-09-07 | 2020-09-25 | 广东美的暖通设备有限公司 | Key display method and nixie tube |
| CN107369403A (en) * | 2017-09-07 | 2017-11-21 | 广东美的暖通设备有限公司 | Button display method and charactron |
| CN110401452A (en) * | 2018-04-25 | 2019-11-01 | 深圳市致行科技有限公司 | Button multiplexing circuit and its button multiplexing method |
| CN110401452B (en) * | 2018-04-25 | 2024-04-16 | 深圳市致行科技有限公司 | Key multiplexing circuit and key multiplexing method thereof |
| CN109347483A (en) * | 2018-11-30 | 2019-02-15 | 珠海巨晟科技股份有限公司 | A kind of control circuit of touch controlled key and the shared IO of charactron |
| CN109347483B (en) * | 2018-11-30 | 2024-03-22 | 珠海巨晟科技股份有限公司 | Control circuit for IO shared by touch key and nixie tube |
| CN110444137A (en) * | 2019-08-15 | 2019-11-12 | 重庆川仪速达机电有限公司 | A kind of multidigit nixie tube display driver circuit and its control method |
| CN111181642A (en) * | 2020-02-17 | 2020-05-19 | 海信（山东）冰箱有限公司 | Refrigerator and optical signal transmission system thereof |
| WO2022166696A1 (en) * | 2021-02-02 | 2022-08-11 | 德沃康科技集团有限公司 | Electric height-adjustable desk controller and electric height-adjustable desk |
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Application publication date: 20151104 |