CN201290107Y - Key-press processing circuit responding based on priority order - Google Patents
Key-press processing circuit responding based on priority order Download PDFInfo
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- CN201290107Y CN201290107Y CNU2008202123078U CN200820212307U CN201290107Y CN 201290107 Y CN201290107 Y CN 201290107Y CN U2008202123078 U CNU2008202123078 U CN U2008202123078U CN 200820212307 U CN200820212307 U CN 200820212307U CN 201290107 Y CN201290107 Y CN 201290107Y
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Abstract
The utility model relates to a key processing circuit responding in order of priority. The key processing circuit is connected between at least two key input terminals and key output terminals, and comprises current-limiting resistors in series connection with the input terminal of each key and an N-channel MOS pipe arranged between output terminals of each two keys, thereby realizing the priority of the key processing circuit. Under the circumstance that two or more keys are pressed simultaneously during fault operation or the induction process of induction keys, the keystroke information is transformed to a processor after being pre-processed by the circuit, therefore, responding keys in order of priority is realized, priority key output is formed and the problems caused by pressing a plurality of keys simultaneously are avoided.
Description
Technical field
The utility model relates to the button treatment circuit, more particularly, relates to a kind of button treatment circuit by the priority response.
Background technology
In the button of present various electric equipment products on the market, its key circuit is regardless of priority, the situation that two or more keys are pressed simultaneously can occur in the induction process of misoperation or induced key, these key informations are sent to processor rather than carry out in advance being sent to processor again after the processing of circuit.Can cause back level when therefore, this button treatment circuit is directly handled handling procedure is complicated and maybe can't discern key information; When key information is encoded transmission, revolving die plan voltage transmission, obscure, make processor can't correctly discern the button situation because of the while button causes the output result.
The utility model content
The technical problems to be solved in the utility model is, can cause the back level when directly handling at the above-mentioned button treatment circuit of prior art handling procedure is complicated maybe can't discern key information; When key information is encoded transmission, revolving die plan voltage transmission, obscure, make processor can't correctly discern defectives such as button situation, a kind of button treatment circuit by the priority response is provided because of the while button causes the output result.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of button treatment circuit by the priority response, described button treatment circuit is connected between two button inputs and the button output at least, and described button treatment circuit comprises the current-limiting resistance that is connected on each button input and is connected N-channel MOS pipe between per two button outputs.
In the button treatment circuit by the priority response described in the utility model, described button input comprises the first button input k1_in and the second button input k2_in, described button output comprises the first button output k1_out and the second button output k2_out, described button treatment circuit comprises: resistance R 1, R2, N-channel MOS pipe V1;
Wherein, an end of resistance R 2 is connected with the second button input k2_in, and the other end is connected to the drain electrode of described N-channel MOS pipe V1, and the drain electrode of described N-channel MOS pipe V1 is also connected to the second button output k2_out;
One end of resistance R 1 is connected with the first button input k1_in, and the other end is connected to the grid of described N-channel MOS pipe V1, and the grid of described N-channel MOS pipe V1 is also connected to the first button output k1_out;
The source ground of described N-channel MOS pipe V1.
In the button treatment circuit by the priority response described in the utility model, described button treatment circuit also comprises: capacitor C 1, C2; Wherein, an end of capacitor C 1 is connected other end ground connection with the first button output k1_out; One end of capacitor C 2 is connected other end ground connection with the second button output k2_out.
In the button treatment circuit by the priority response described in the utility model, described button input comprises the first button input k1_in, the second button input k2_in and the 3rd button input k3_in, described button output comprises the first button output k1_out, the second button output k2_out and the 3rd button output k3_out, described button treatment circuit comprises: resistance R 1, R2, R3, N-channel MOS pipe V1, V2, V3;
Wherein, one end of resistance R 3 is connected with the 3rd button input k3_in, the other end is connected to the drain electrode of described N-channel MOS pipe V3 and the drain electrode of N-channel MOS pipe V2, and the drain electrode of the drain electrode of described N-channel MOS pipe V3 and N-channel MOS pipe V2 is also connected to the 3rd button output k3_out;
One end of resistance R 2 is connected with the second button input k2_in, the other end is connected to the drain electrode of described N-channel MOS pipe V1 and the grid of N-channel MOS pipe V3, and the grid of the drain electrode of described N-channel MOS pipe V1 and N-channel MOS pipe V3 is also connected to the second button output k2_out;
One end of resistance R 1 is connected with the first button input k1_in, the other end is connected to the grid of described N-channel MOS pipe V1 and the grid of N-channel MOS pipe V2, and the grid of the grid of described N-channel MOS pipe V1 and N-channel MOS pipe V2 is also connected to the first button output k1_out;
The source grounding of described N-channel MOS pipe V1, V2, V3.
In the button treatment circuit by the priority response described in the utility model, described button treatment circuit also comprises: capacitor C 1, C2, C3; Wherein, an end of capacitor C 1 is connected other end ground connection with the first button output k1_out; One end of capacitor C 2 is connected other end ground connection with the second button output k2_out; One end of capacitor C 3 is connected other end ground connection with the 3rd button output k3_out.
In the button treatment circuit by the priority response described in the utility model, described button input comprises the first button input k1_in, the second button input k2_in, the 3rd button input k3_in and the 4th button input k4_in, described button output comprises the first button output k1_out, the second button output k2_out, the 3rd button output k3_out and the 4th button output k4_out, described button treatment circuit comprises: resistance R 1, R2, R3, R4, N-channel MOS pipe V1, V2, V3, V4, V5, V6;
Wherein, one end of resistance R 4 is connected with the 4th button input k4_in, the other end is connected to the drain electrode of described N-channel MOS pipe V6, the drain electrode of N-channel MOS pipe V5 and the drain electrode of N-channel MOS pipe V4, and the drain electrode of the drain electrode of described N-channel MOS pipe V6, N-channel MOS pipe V5 and the drain electrode of N-channel MOS pipe V4 are also connected to the 4th button output k4_out;
One end of resistance R 3 is connected with the 3rd button input k3_in, the other end is connected to the drain electrode of described N-channel MOS pipe V3, the drain electrode of N-channel MOS pipe V2 and the grid of N-channel MOS pipe V6, and the drain electrode of the drain electrode of described N-channel MOS pipe V3, N-channel MOS pipe V2 and the grid of N-channel MOS pipe V6 are also connected to the 3rd button output k3_out;
One end of resistance R 2 is connected with the second button input k2_in, the other end is connected to the drain electrode of described N-channel MOS pipe V1 and the grid of N-channel MOS pipe V3, and the grid of the drain electrode of described N-channel MOS pipe V1 and N-channel MOS pipe V3 is also connected to the second button output k2_out;
One end of resistance R 1 is connected with the first button input k1_in, the other end is connected to the grid of described N-channel MOS pipe V1, the grid of N-channel MOS pipe V2 and the grid of N-channel MOS pipe V4, and the grid of the grid of described N-channel MOS pipe V1, N-channel MOS pipe V2 and the grid of N-channel MOS pipe V4 are also connected to the first button output k1_out;
The source grounding of described N-channel MOS pipe V1, V2, V3, V4, V5, V6.
In the button treatment circuit by the priority response described in the utility model, described button treatment circuit also comprises: capacitor C 1, C2, C3, C4; Wherein, an end of capacitor C 1 is connected other end ground connection with the first button output k1_out; One end of capacitor C 2 is connected other end ground connection with the second button output k2_out; One end of capacitor C 3 is connected other end ground connection with the 3rd button output k3_out; One end of capacitor C 4 is connected other end ground connection with the 4th button output k4_out.。
Implement the button treatment circuit by the priority response of the present utility model, has following beneficial effect: the priority that has realized the button treatment circuit, occur the situation that two or more keys are pressed simultaneously in the induction process of misoperation or induced key, these key informations can be sent to processor after the processing of circuit again through carrying out in advance.Can cause the back level when therefore, this button treatment circuit has been avoided direct processing handling procedure is complicated and maybe can't discern key information; Avoided when key information is encoded transmission, revolving die plan voltage transmission, obscuring, made processor can't correctly discern the button situation because of the while button causes the output result.Realized forming preferential button output, avoided many buttons to press the problem that causes simultaneously by priority response button.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the circuit theory diagrams of the utility model by button treatment circuit first embodiment of priority response;
Fig. 2 is the circuit theory diagrams of the utility model by button treatment circuit second embodiment of priority response;
Fig. 3 is the circuit theory diagrams of the utility model by button treatment circuit the 3rd embodiment of priority response.
Embodiment
The purpose of technical solutions of the utility model is to set the priority of button, and according to the sequential processes push button signalling of priority, when the high button of priority was pressed, the button that other priority is low all was under an embargo.
Button treatment circuit by priority response of the present utility model is fit to the situation of two and above button, is connected in series the priority treatment effect that this button treatment circuit can produce button at original button input and button output.Among three embodiment of the present utility model shown in Fig. 1～3, embodiment wherein shown in Figure 1 is the situation of 2 buttons, embodiment shown in Figure 2 is the situation of 3 buttons, embodiment shown in Figure 3 is the situation of 4 buttons, the priority of button is according to button 1, button 2, button 3, the sequence arrangement of button 4.The button useful signal is example with the high level, increases inverter for the effective signal demand of low level and handles.
Wherein, k1_in, k2_in, k3_in, signals such as k4_in are original buttons 1, button 2, button 3, the button input of pressing key input signal of button 4, k1_out, k2_out, k3_out, k3_out are treated buttons 1, button 2, button 3, the button output of pressing key output signal of button 4.
R1, R2, R3, R4 are current-limiting resistances, Standard resistance range is 0 ohm and arrives 100K, one of each button input series connection.
C1, C2, C3, C4 are filter capacitors, each connects a filter capacitor over the ground each output, range of capacity be 100pF to 4.7uF, can not adorn yet.
VD1 is an electrostatic protection device, can omit except last button output generally speaking, and other outputs all need electrostatic protection.Can adopt other electrostatic protection device,, also can select not adorn in the occasion of guaranteeing not have static.
V1, V2, V3, V4 are the N-channel MOS pipes, start to control to make to use.V1 is that first button forbids that preferentially second button use, and when first button is high level, forces second button output to become low level by the inverting function of V1.V2 is that first button forbids that preferentially the 3rd button use, and when first button is high level, forces the 3rd button output to become low level by the inverting function of V2.V3 is that second button forbids that preferentially the 3rd button use, and when second button is high level, forces the 3rd button output to become low level by the inverting function of V3.The situation of other more buttons and the like, suppose to have n button, then need n (n-1)/2 a N-channel MOS pipe to control.
As shown in Figure 1, in button treatment circuit first embodiment by the priority response of the present utility model, described button input comprises the first button input k1_in and the second button input k2_in, described button output comprises the first button output k1_out and the second button output k2_out, described button treatment circuit comprises: resistance R 1, R2, N-channel MOS pipe V1; Wherein, an end of resistance R 2 is connected with the second button input k2_in, and the other end is connected to the drain electrode of N-channel MOS pipe V1, and the drain electrode of described N-channel MOS pipe V1 is also connected to the second button output k2_out; One end of resistance R 1 is connected with the first button input k1_in, and the other end is connected to the grid of N-channel MOS pipe V1, and the grid of described N-channel MOS pipe V1 is also connected to the first button output k1_out; The source ground of N-channel MOS pipe V1.Preferably, this button treatment circuit also comprises: capacitor C 1, C2; Wherein, an end of capacitor C 1 is connected other end ground connection with the first button output k1_out; One end of capacitor C 2 is connected other end ground connection with the second button output k2_out.
As shown in Figure 2, in button treatment circuit second embodiment by the priority response of the present utility model, this button input comprises the first button input k1_in, the second button input k2_in and the 3rd button input k3_in, the button output comprises the first button output k1_out, the second button output k2_out and the 3rd button output k3_out, described button treatment circuit comprises: resistance R 1, R2, R3, N-channel MOS pipe V1, V2, V3; Wherein, one end of resistance R 3 is connected with the 3rd button input k3_in, the other end is connected to the drain electrode of N-channel MOS pipe V3 and the drain electrode of N-channel MOS pipe V2, and the drain electrode of the drain electrode of N-channel MOS pipe V3 and N-channel MOS pipe V2 is also connected to the 3rd button output k3_out; One end of resistance R 2 is connected with the second button input k2_in, and the other end is connected to the drain electrode of N-channel MOS pipe V1 and the grid of N-channel MOS pipe V3, and the grid of the drain electrode of N-channel MOS pipe V1 and N-channel MOS pipe V3 is also connected to the second button output k2_out; One end of resistance R 1 is connected with the first button input k1_in, and the other end is connected to the grid of N-channel MOS pipe V1 and the grid of N-channel MOS pipe V2, and the grid of the grid of N-channel MOS pipe V1 and N-channel MOS pipe V2 is also connected to the first button output k1_out; The source grounding of N-channel MOS pipe V1, V2, V3.Preferably, this button treatment circuit also comprises: capacitor C 1, C2, C3; Wherein, an end of capacitor C 1 is connected other end ground connection with the first button output k1_out; One end of capacitor C 2 is connected other end ground connection with the second button output k2_out; One end of capacitor C 3 is connected other end ground connection with the 3rd button output k3_out.
As shown in Figure 3, in button treatment circuit the 3rd embodiment by the priority response of the present utility model, this button input comprises the first button input k1_in, the second button input k2_in, the 3rd button input k3_in and the 4th button input k4_in, the button output comprises the first button output k1_out, the second button output k2_out, the 3rd button output k3_out and the 4th button output k4_out, described button treatment circuit comprises: resistance R 1, R2, R3, R4, N-channel MOS pipe V1, V2, V3, V4, V5, V6; Wherein, one end of resistance R 4 is connected with the 4th button input k4_in, the other end is connected to the drain electrode of described N-channel MOS pipe V6, the drain electrode of N-channel MOS pipe V5 and the drain electrode of N-channel MOS pipe V4, and the drain electrode of the drain electrode of described N-channel MOS pipe V6, N-channel MOS pipe V5 and the drain electrode of N-channel MOS pipe V4 are also connected to the 4th button output k4_out; One end of resistance R 3 is connected with the 3rd button input k3_in, the other end is connected to the drain electrode of described N-channel MOS pipe V3, the drain electrode of N-channel MOS pipe V2 and the grid of N-channel MOS pipe V6, and the drain electrode of the drain electrode of described N-channel MOS pipe V3, N-channel MOS pipe V2 and the grid of N-channel MOS pipe V6 are also connected to the 3rd button output k3_out; One end of resistance R 2 is connected with the second button input k2_in, the other end is connected to the drain electrode of described N-channel MOS pipe V1 and the grid of N-channel MOS pipe V3, and the grid of the drain electrode of described N-channel MOS pipe V1 and N-channel MOS pipe V3 is also connected to the second button output k2_out; One end of resistance R 1 is connected with the first button input k1_in, the other end is connected to the grid of described N-channel MOS pipe V1, the grid of N-channel MOS pipe V2 and the grid of N-channel MOS pipe V4, and the grid of the grid of described N-channel MOS pipe V1, N-channel MOS pipe V2 and the grid of N-channel MOS pipe V4 are also connected to the first button output k1_out; The source grounding of described N-channel MOS pipe V1, V2, V3, V4, V5, V6.Preferably, this button treatment circuit also comprises: capacitor C 1, C2, C3, C4; Wherein, an end of capacitor C 1 is connected other end ground connection with the first button output k1_out; One end of capacitor C 2 is connected other end ground connection with the second button output k2_out; One end of capacitor C 3 is connected other end ground connection with the 3rd button output k3_out; One end of capacitor C 4 is connected other end ground connection with the 4th button output k4_out.
The utility model describes by several specific embodiments, it will be appreciated by those skilled in the art that, under the situation that does not break away from the utility model scope, can also carry out various conversion and be equal to alternative the utility model.In addition, at particular condition or concrete condition, can make various modifications to the utility model, and not break away from scope of the present utility model.Therefore, the utility model is not limited to disclosed specific embodiment, and should comprise the whole execution modes that fall in the utility model claim scope.
Claims (7)
1, a kind of button treatment circuit by the priority response, described button treatment circuit is connected between two button inputs and the button output at least, it is characterized in that described button treatment circuit comprises the current-limiting resistance that is connected on each button input and is connected N-channel MOS pipe between per two button outputs.
2, the button treatment circuit by the priority response according to claim 1, it is characterized in that, described button input comprises the first button input k1_in and the second button input k2_in, described button output comprises the first button output k1_out and the second button output k2_out, described button treatment circuit comprises: resistance R 1, R2, N-channel MOS pipe V1;
Wherein, an end of resistance R 2 is connected with the second button input k2_in, and the other end is connected to the drain electrode of described N-channel MOS pipe V1, and the drain electrode of described N-channel MOS pipe V1 is also connected to the second button output k2_out;
One end of resistance R 1 is connected with the first button input k1_in, and the other end is connected to the grid of described N-channel MOS pipe V1, and the grid of described N-channel MOS pipe V1 is also connected to the first button output k1_out;
The source ground of described N-channel MOS pipe V1.
3, the button treatment circuit by the priority response according to claim 2 is characterized in that described button treatment circuit also comprises: capacitor C 1, C2; Wherein, an end of capacitor C 1 is connected other end ground connection with the first button output k1_out; One end of capacitor C 2 is connected other end ground connection with the second button output k2_out.
4, the button treatment circuit by the priority response according to claim 1, it is characterized in that, described button input comprises the first button input k1_in, the second button input k2_in and the 3rd button input k3_in, described button output comprises the first button output k1_out, the second button output k2_out and the 3rd button output k3_out, described button treatment circuit comprises: resistance R 1, R2, R3, N-channel MOS pipe V1, V2, V3;
Wherein, one end of resistance R 3 is connected with the 3rd button input k3_in, the other end is connected to the drain electrode of described N-channel MOS pipe V3 and the drain electrode of N-channel MOS pipe V2, and the drain electrode of the drain electrode of described N-channel MOS pipe V3 and N-channel MOS pipe V2 is also connected to the 3rd button output k3_out;
One end of resistance R 2 is connected with the second button input k2_in, the other end is connected to the drain electrode of described N-channel MOS pipe V1 and the grid of N-channel MOS pipe V3, and the grid of the drain electrode of described N-channel MOS pipe V1 and N-channel MOS pipe V3 is also connected to the second button output k2_out;
One end of resistance R 1 is connected with the first button input k1_in, the other end is connected to the grid of described N-channel MOS pipe V1 and the grid of N-channel MOS pipe V2, and the grid of the grid of described N-channel MOS pipe V1 and N-channel MOS pipe V2 is also connected to the first button output k1_out;
The source grounding of described N-channel MOS pipe V1, V2, V3.
5, the button treatment circuit by the priority response according to claim 4 is characterized in that described button treatment circuit also comprises: capacitor C 1, C2, C3; Wherein, an end of capacitor C 1 is connected other end ground connection with the first button output k1_out; One end of capacitor C 2 is connected other end ground connection with the second button output k2_out; One end of capacitor C 3 is connected other end ground connection with the 3rd button output k3_out.
6, the button treatment circuit by the priority response according to claim 1, it is characterized in that, described button input comprises the first button input k1_in, the second button input k2_in, the 3rd button input k3_in and the 4th button input k4_in, described button output comprises the first button output k1_out, the second button output k2_out, the 3rd button output k3_out and the 4th button output k4_out, described button treatment circuit comprises: resistance R 1, R2, R3, R4, N-channel MOS pipe V1, V2, V3, V4, V5, V6;
Wherein, one end of resistance R 4 is connected with the 4th button input k4_in, the other end is connected to the drain electrode of described N-channel MOS pipe V6, the drain electrode of N-channel MOS pipe V5 and the drain electrode of N-channel MOS pipe V4, and the drain electrode of the drain electrode of described N-channel MOS pipe V6, N-channel MOS pipe V5 and the drain electrode of N-channel MOS pipe V4 are also connected to the 4th button output k4_out;
One end of resistance R 3 is connected with the 3rd button input k3_in, the other end is connected to the drain electrode of described N-channel MOS pipe V3, the drain electrode of N-channel MOS pipe V2 and the grid of N-channel MOS pipe V6, and the drain electrode of the drain electrode of described N-channel MOS pipe V3, N-channel MOS pipe V2 and the grid of N-channel MOS pipe V6 are also connected to the 3rd button output k3_out;
One end of resistance R 2 is connected with the second button input k2_in, the other end is connected to the drain electrode of described N-channel MOS pipe V1 and the grid of N-channel MOS pipe V3, and the grid of the drain electrode of described N-channel MOS pipe V1 and N-channel MOS pipe V3 is also connected to the second button output k2_out;
One end of resistance R 1 is connected with the first button input k1_in, the other end is connected to the grid of described N-channel MOS pipe V1, the grid of N-channel MOS pipe V2 and the grid of N-channel MOS pipe V4, and the grid of the grid of described N-channel MOS pipe V1, N-channel MOS pipe V2 and the grid of N-channel MOS pipe V4 are also connected to the first button output k1_out;
The source grounding of described N-channel MOS pipe V1, V2, V3, V4, V5, V6.
7, the button treatment circuit by the priority response according to claim 6 is characterized in that described button treatment circuit also comprises: capacitor C 1, C2, C3, C4; Wherein, an end of capacitor C 1 is connected other end ground connection with the first button output k1_out; One end of capacitor C 2 is connected other end ground connection with the second button output k2_out; One end of capacitor C 3 is connected other end ground connection with the 3rd button output k3_out; One end of capacitor C 4 is connected other end ground connection with the 4th button output k4_out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202123078U CN201290107Y (en) | 2008-09-26 | 2008-09-26 | Key-press processing circuit responding based on priority order |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202123078U CN201290107Y (en) | 2008-09-26 | 2008-09-26 | Key-press processing circuit responding based on priority order |
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| Publication Number | Publication Date |
|---|---|
| CN201290107Y true CN201290107Y (en) | 2009-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202123078U Expired - Fee Related CN201290107Y (en) | 2008-09-26 | 2008-09-26 | Key-press processing circuit responding based on priority order |
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| CN (1) | CN201290107Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522973A (en) * | 2011-12-08 | 2012-06-27 | 中联重科股份有限公司 | Switching value input device, switching value input design method and detection method |
| CN103196626A (en) * | 2013-03-22 | 2013-07-10 | 北京长城电子装备有限责任公司 | Voice broadcasting type digital pressure detecting system |
-
2008
- 2008-09-26 CN CNU2008202123078U patent/CN201290107Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522973A (en) * | 2011-12-08 | 2012-06-27 | 中联重科股份有限公司 | Switching value input device, switching value input design method and detection method |
| CN103196626A (en) * | 2013-03-22 | 2013-07-10 | 北京长城电子装备有限责任公司 | Voice broadcasting type digital pressure detecting system |
| CN103196626B (en) * | 2013-03-22 | 2015-06-10 | 北京长城电子装备有限责任公司 | Voice broadcasting type digital pressure detecting system |
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Granted publication date: 20090812 Termination date: 20110926 |