CN108399019A - For improving the correcting circuit of button spring erroneous judgement - Google Patents
For improving the correcting circuit of button spring erroneous judgement Download PDFInfo
- Publication number
- CN108399019A CN108399019A CN201710066824.2A CN201710066824A CN108399019A CN 108399019 A CN108399019 A CN 108399019A CN 201710066824 A CN201710066824 A CN 201710066824A CN 108399019 A CN108399019 A CN 108399019A
- Authority
- CN
- China
- Prior art keywords
- predetermined voltage
- button
- correcting circuit
- control unit
- triggering signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
- G06F3/0383—Signal control means within the pointing device
Abstract
The present invention is to disclose a kind of correcting circuit being used for improving button spring erroneous judgement, and unit and a control unit are generated it includes having a comparing unit, a predetermined voltage.There is the comparing unit first input end, one second input terminal and an output end, the first input end to be used for receiving one of button generation triggering signal.The predetermined voltage generates unit and is electrically connected to second input terminal, for generating one first predetermined voltage.The control unit is electrically connected to the output end.The control unit decides whether to execute polling mechanism according to one of comparing unit comparison result, and a confirmation signal is generated when one of polling mechanism polling result maintains a specific level.Wherein the confirmation signal is used for confirming that the button triggers really for a ppu.
Description
Technical field
The present invention is to provide a kind of correcting circuit, espespecially a kind of correcting circuit that can be used for improving button spring erroneous judgement.
Background technology
Computer mouse is typically provided with left button and right button, and user generates through right and left key is clicked different from navigation module
Control signal.The left button of mouse and right button are for common press button mechanism, and user pushes key cap of key set and triggers generation control
Signal processed, after person's external force to be used removes, keycap returns to elemental height position by the restoring force of elastic element again.By frequent
And long-term use, the elastic element of button have elastic fatigue phenomenon, being vulnerable to the strength of ambient vibration influences, and keycap is allowed to exist
The person of being not used still moves up and down when pressing, and it is toggled will to judge into button by accident for mouse at this time.Traditional settling mode is profit
Whether remove to judge button by certain triggering or only unexpected spring with polling mechanism, however longer poll judges that the time can lead
It causes mouse to have Caton phenomenon in operation, shortens poll and judge that the time separately causes to judge by accident because button bounces；Therefore how to design one kind
Can shorten poll judge the time but also reduce spring erroneous judgement alignment technique, just for the developing goal of associated mechanisms industry it
One.
Invention content
The present invention is to provide a kind of correcting circuit that can be used for improving button spring erroneous judgement, above-mentioned to solve the problems, such as.
The claim of the present invention is to disclose a kind of correcting circuit being used for improving button spring erroneous judgement, it includes
There are a comparing unit, a predetermined voltage to generate unit and predetermined voltage generation unit.The comparing unit is defeated with one first
Enter end, one second input terminal and an output end, which is used for receiving one of button generation triggering signal.This is predetermined
Voltage generating unit is electrically connected to second input terminal, for generating one first predetermined voltage.The control unit is electrically connected to this
Output end.The control unit decides whether execution polling mechanism according to one of comparing unit comparison result, and in the poll machine
One of system polling result generates a confirmation signal when maintaining a specific level.Wherein the confirmation signal is used for at an outside
Reason device confirms that the button triggers really.
The claim of the present invention separately discloses the correcting circuit and has additionally comprised an edge trigger element, is electrically connected to this
First input end and the button, to judge whether the triggering signal occurs transition.When one of triggering signal current potential changes, open
The comparing unit is moved to decide whether to execute polling mechanism, when which does not change, which separately judges that the button does not have
There is certain triggering.
The claim of the present invention separately disclose the control unit one of triggering signal voltage value higher than this first
The polling mechanism is executed when predetermined voltage, and prompt news are sent out when the voltage value is less than or equal to first predetermined voltage
Number.The control unit judges that the button does not trigger really when the voltage value is less than or equal to first predetermined voltage.The control
One of unit record processed triggering signal voltage value is less than one of first predetermined voltage cumulant, and corresponding according to the cumulant
Send out a prompt signal.
The claim of the present invention separately discloses predetermined voltage generation unit and is separately used for generating one second predetermined voltage,
When one of triggering signal current potential does not change, which further compares the triggering signal and second predetermined voltage,
To judge whether the button does not trigger really.The control unit separately in one of triggering signal voltage value greater than or equal to this
Two predetermined voltages send out a prompt signal.
The claim of the present invention separately disclose the control unit be in the polling result in a preset period of time or one
When all maintaining the specific level in preset times, the confirmation signal is generated.The time span of the preset period of time or this default time
Count the operating frequency respective change according to the control unit.
The correcting circuit of the present invention preferably use high operating frequency control unit, can it is intensive and rapidly detecting button be
No certain triggering.Correcting circuit decides whether to start comparing unit using the transition of edge-triggered unit detecting triggering signal；Than
Compared with unit be used for execute button triggering signal and first and second predetermined voltage comparison operation, by analyze trigger signal into
Enter number and/or the period of critical zone, can accurately judge that button is to belong to be pressed triggering or only mechanism really by user
The spring of misalignment is judged by accident.Therefore, correcting circuit both shortens poll time using the control unit of high operating frequency, further again
Triggering/spring judgment mechanism that button is carried out by edge-triggered unit and comparing unit, avoids erroneous judgement from causing keyswitch type electronic
The operation misalignment of equipment.
Description of the drawings
Fig. 1 is the circuit diagram of the correcting circuit of the embodiment of the present invention.
The operation workflow figure of the correcting circuit of Fig. 2 embodiment of the present invention.
The correcting circuit of Fig. 3 embodiment of the present invention analyzes the waveform diagram of triggering signal.
Drawing reference numeral explanation：
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific implementation mode
It please refers to Fig.1 to Fig.3, Fig. 1 is the circuit diagram of the correcting circuit 10 of the embodiment of the present invention, and Fig. 2 present invention is real
The operation workflow figure of the correcting circuit 10 of example is applied, the correcting circuit 10 of Fig. 3 embodiment of the present invention analyzes the waveform of triggering signal S
Schematic diagram.10 preferred application of correcting circuit is in the electronic equipment with button, such as the navigation device of computer mouse, thereby
Improve the spring erroneous judgement of button.User's pressing keys or button may all will produce triggering signal S by influence of ambient vibration.
The numerical value change of triggering signal S produced by certain pressing keys is usually larger, and button is bounced produced triggering by ambient vibration
The numerical value change of signal S is typically small, and correcting circuit 10 of the invention is using edge-triggered technology and comparator detection techniques point
Analysis effectively differentiates whether button is triggered or the vibration bullet of only button by user accordingly according to the parameter characteristic of triggering signal S
It jumps.
As shown in Figure 1, correcting circuit 10 includes comparing unit 12, predetermined voltage generation unit 14, edge-triggered unit 16
And control unit 18.Edge-triggered unit 16 is electrically connected to the first input end 121 and button or can another electricity of comparing unit 12
It is connected to control unit 18.Predetermined voltage generates the second input terminal 122 that unit 14 is electrically connected to comparing unit 12, and controls single
Member 18 is electrically connected to the output end 123 of comparing unit 12.Special one is mentioned that, edge-triggered unit 16 belongs to selection element,
It can be considered with user and be arranged or remove.When correcting circuit 10 does not have edge-triggered unit 16, comparing unit 12 is duration
It maintains and causes hair pattern；If there is correcting circuit 10 edge-triggered unit 16, comparing unit 12 can generally rest on suspend mode
To save electric power, wait for that edge-triggered unit 16 judges to trigger whether signal S occurs transition, to decide whether to start comparing unit 12
Carry out the spring analysis of misjudgement of button.
First, step 200 and step 202 are executed, button is caused to send out and generates triggering signal S, and edge-triggered unit 16 connects
Triggering signal S is received, and judges whether the current potential for triggering signal S changes.When the current potential does not change, step 204 is executed, is pressed
Key is not triggered really, and comparing unit 12 is still maintained at suspend mode at this time.When the current potential of triggering signal S changes, hold
Row step 206, edge-triggered unit 16 send out startup signal and wake up comparing unit 12, and comparing unit 12 is by triggering signal S and in advance
Constant voltage generates the first predetermined voltage V1 caused by unit 14 and is compared.Wherein, if correcting circuit 10 is touched without edge
Bill member 16, the triggering signal S that button generates is to be sent directly into comparing unit 12 via first input end 121, by comparing unit
12 carry out the comparison operation of triggering signal S and the first predetermined voltage V1.
When the voltage value for triggering signal S is less than or equal to the first predetermined voltage V1, step 208, control unit 18 are executed
Judge that button does not trigger really, and selectively sends out prompt signal；Prompt signal is to remind user's button weathered not
It may use or arbitrarily be used for other possible prompting items.When the voltage value for triggering signal S is higher than the first predetermined voltage V1,
Step 210 is executed, control unit 18 starts polling mechanism.In a step 208, if the voltage value of triggering signal S is less than first
The number cumulant of predetermined voltage V1 is few, can be considered that button only belongs to temporary failure；If control unit 18 records it
Voltage value is more less than the number cumulant of the first predetermined voltage V1, can just judge that button is weathered, and accordingly send out prompt
Signal.
After polling mechanism starts, if (such as 1 millisecond, right actual numerical value is not within preset certain period for polling result
It is limited to this) specific level can be maintained, step 212 is executed, control unit 18 can generate confirmation signal, and correcting circuit 10 will be true
Recognize signal and be transmitted to the electronic device for being matched with keyswitch type electronic equipment, button is judged by the ppu of the electronic device
The button that electronic equipment generates clicks signal, to execute relevant application program when button is triggered really.If poll knot
Fruit can not be maintained at specific level within certain period, execute step 214, and correcting circuit 10 will not generate confirmation signal, assert
Triggering signal is generated because of the unexpected spring of button, thus judges that button is not triggered really.
In the step 212, in order to avoid the erroneous judgement of polling mechanism, control unit 18 preferably can be in polling result when default
When all maintaining specific level in section or preset times, just generates and confirm signal (implying that aforementioned preset certain period)；And
And the sum of time span or preset times of preset period of time is respective change according to the operating frequency of control unit 18.Such as
If operating frequency can execute 200 button detections for the control unit 18 of 32MHz within 3 milliseconds of period, if correcting circuit
The 10 button detections for using the control unit 18,200 times that operating frequency is 72MHz instead can accelerate to complete in 1.3 milliseconds；Its is pre-
If the parameter value of period and preset times is not limited to described in above-mentioned state sample implementation, hold depending on design requirement.
It separately can be used to generate the second predetermined voltage different from the first predetermined voltage V1 in addition, predetermined voltage generates unit 14
V2.By taking computer mouse as an example, the first predetermined voltage V1 may be set to 3 volts, and the second predetermined voltage V2 is then set as 0.3 volt,
Interval range between first predetermined voltage V1 and the second predetermined voltage V2 is defined as critical zone, and right practical application is not limited to
This.In step 202, when edge-triggered unit 16 judges that the current potential of triggering signal S does not change, comparing unit 12 is alternative
Separately compare triggering signal S and the second predetermined voltage V2.When the voltage value of triggering signal S enters critical zone, its voltage value is implied that
When less than the first predetermined voltage V1 and greater than or equal to the second predetermined voltage V2, control unit 18 assert that button does not touch really
It sends out and sends out prompt signal；As described in before taking off embodiment, correcting circuit 10 can enter critical zone according to the voltage value of triggering signal S
Number number and/or time length, remind the user button is weathered need to replace in real time.
In conclusion the correcting circuit of the present invention preferably uses the control unit of high operating frequency, it can be intensive and rapidly
Whether detecting button triggers really.Correcting circuit decides whether to start using the transition of edge-triggered unit detecting triggering signal
Comparing unit；Comparing unit be used for execute button triggering signal and first and second predetermined voltage comparison operation, by divide
Analysis triggering signal enters number and/or the period of critical zone, can accurately judge that button is to belong to be pressed really by user to touch
Hair or the only spring of mechanism misalignment erroneous judgement.Therefore, correcting circuit both shortens poll using the control unit of high operating frequency
Time is further carried out triggering/spring judgment mechanism of button by edge-triggered unit and comparing unit, erroneous judgement is avoided to make again
At the operation misalignment of keyswitch type electronic equipment.
The foregoing is merely the preferred embodiments of the invention, all equivalent changes done according to scope of the present invention patent with
Modification, should all belong to the covering scope of the present invention.
Claims (10)
1. a kind of correcting circuit being used for improving button spring erroneous judgement, which is characterized in that it includes have：
There is one comparing unit a first input end, one second input terminal and an output end, the first input end to be used for receiving this
One of button generation triggering signal；
One predetermined voltage generates unit, second input terminal is electrically connected to, for generating one first predetermined voltage；And
One control unit is electrically connected to the output end, which decides whether according to one of comparing unit comparison result
Polling mechanism is executed, and generates a confirmation signal when one of polling mechanism polling result maintains a specific level,
In the confirmation signal be used for for a ppu confirming that the button triggers really.
2. correcting circuit as described in claim 1, which is characterized in that additionally comprised：
One edge trigger element, is electrically connected to the first input end and the button, to judge whether the triggering signal occurs to turn
State.
3. correcting circuit as claimed in claim 2, which is characterized in that when wherein one of triggering signal current potential changes, start
The comparing unit is to decide whether to execute polling mechanism, and when which does not change, which separately judges that the button does not have
Really triggering.
4. correcting circuit as described in claim 1, which is characterized in that wherein the control unit is in one of triggering signal voltage
Value executes the polling mechanism when being higher than first predetermined voltage, and is sent out when the voltage value is less than or equal to first predetermined voltage
Go out a prompt signal.
5. correcting circuit as claimed in claim 4, which is characterized in that wherein the control unit is less than or equal in the voltage value
When first predetermined voltage, judge that the button does not trigger really.
6. correcting circuit as described in claim 1, which is characterized in that wherein the control unit records one of triggering signal electricity
Pressure value accordingly sends out a prompt signal less than one of first predetermined voltage cumulant according to the cumulant.
7. correcting circuit as claimed in claim 2, which is characterized in that wherein the predetermined voltage generates unit and is separately used for generating one
Second predetermined voltage, when one of triggering signal current potential does not change, which further compares the triggering signal and is somebody's turn to do
Second predetermined voltage, to judge whether the button does not trigger really.
8. correcting circuit as claimed in claim 7, which is characterized in that wherein the control unit is separately in one of triggering signal electricity
Pressure value sends out a prompt signal greater than or equal to second predetermined voltage.
9. correcting circuit as described in claim 1, which is characterized in that wherein the control unit is pre- one in the polling result
If all maintain the specific level in the period or in a preset times, the confirmation signal is generated.
10. correcting circuit as claimed in claim 9, which is characterized in that the wherein time span of the preset period of time or this is default
Number according to the control unit operating frequency respective change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710066824.2A CN108399019B (en) | 2017-02-07 | 2017-02-07 | Correction circuit for improving key bounce misjudgment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710066824.2A CN108399019B (en) | 2017-02-07 | 2017-02-07 | Correction circuit for improving key bounce misjudgment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108399019A true CN108399019A (en) | 2018-08-14 |
| CN108399019B CN108399019B (en) | 2021-06-01 |
Family
ID=63094397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710066824.2A Active CN108399019B (en) | 2017-02-07 | 2017-02-07 | Correction circuit for improving key bounce misjudgment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108399019B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7847614B2 (en) * | 2007-05-30 | 2010-12-07 | Kyocera Corporation | Switch noise reduction device and method using counter |
| CN102005199A (en) * | 2010-12-24 | 2011-04-06 | 福建华映显示科技有限公司 | Time schedule controller for liquid crystal display panel and time schedule control method thereof |
| US20110309956A1 (en) * | 2010-06-22 | 2011-12-22 | Microsoft Corporation | Low power sensing via resistive sensor matrix |
| US20120050208A1 (en) * | 2010-08-30 | 2012-03-01 | Microsoft Corporation | Resistive matrix with optimized input scanning |
| CN105589582A (en) * | 2014-11-10 | 2016-05-18 | 原相科技股份有限公司 | Correcting circuit for switching mouse into different sensing modes |
-
2017
- 2017-02-07 CN CN201710066824.2A patent/CN108399019B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7847614B2 (en) * | 2007-05-30 | 2010-12-07 | Kyocera Corporation | Switch noise reduction device and method using counter |
| US20110309956A1 (en) * | 2010-06-22 | 2011-12-22 | Microsoft Corporation | Low power sensing via resistive sensor matrix |
| US20120050208A1 (en) * | 2010-08-30 | 2012-03-01 | Microsoft Corporation | Resistive matrix with optimized input scanning |
| CN102005199A (en) * | 2010-12-24 | 2011-04-06 | 福建华映显示科技有限公司 | Time schedule controller for liquid crystal display panel and time schedule control method thereof |
| CN105589582A (en) * | 2014-11-10 | 2016-05-18 | 原相科技股份有限公司 | Correcting circuit for switching mouse into different sensing modes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108399019B (en) | 2021-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20140278194A1 (en) | Proximity interface development system having analyzer and method | |
| US8723657B2 (en) | Input device, vibration device and input detection method | |
| CN108475597B (en) | Device and method for detecting actuation of a switch | |
| CN108733249A (en) | Portable electric device, contact-controllable detector and its touch detection method | |
| EP3287920A1 (en) | Electronic terminal screen unlocking method, image acquisition method and device | |
| US20130221999A1 (en) | Testing system and method | |
| CN112306248A (en) | Hybrid circuit for touch pad and keyboard | |
| US7809867B2 (en) | Keypad de-bouncing apparatus and method | |
| CN102566822A (en) | Automatic calibration method for touch screen | |
| CN103677551A (en) | Information processing method and electronic device | |
| KR20150111043A (en) | Fingerprint authenticating apparatus detecting finger touch and operating method thereof | |
| US10592023B2 (en) | Touch display assembly, touch input unit and touch input method | |
| JP2022503458A (en) | Speech processing methods, devices, devices, programs and computer storage media | |
| CN108399019A (en) | For improving the correcting circuit of button spring erroneous judgement | |
| CN106468973B (en) | Touch event processing method and device | |
| CN106919285B (en) | Terminal | |
| CN105787313B (en) | Cryptographic system and electronic equipment with the cryptographic system | |
| US20160226521A1 (en) | Touch-on-Metal Keypad with N-1 Key Scan Averaging | |
| US10224927B2 (en) | Input device, terminal device, and computer-readable recording medium | |
| CN107592842B (en) | The detection of the operation of operating element in motor vehicle | |
| US10310672B2 (en) | Input apparatus, input detection method, and in-vehicle apparatus | |
| US10659077B2 (en) | Amending circuit of correcting bouncing misjudgment of a keyswitch | |
| US20070279811A1 (en) | Protection device | |
| CN104615957A (en) | Power mode switching method and device | |
| US20170010696A1 (en) | Input device adaptable to use habit and adapting method therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |