CN103812493A - Key trigger method - Google Patents
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- CN103812493A CN103812493A CN201210439042.6A CN201210439042A CN103812493A CN 103812493 A CN103812493 A CN 103812493A CN 201210439042 A CN201210439042 A CN 201210439042A CN 103812493 A CN103812493 A CN 103812493A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
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- 238000004088 simulation Methods 0.000 description 2
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Abstract
The invention discloses a key trigger method comprising: receiving a pressing signal in order that a keyboard acquires a piece of positional information and multiple reference values according to the pressing signal; calculating a variation value according to the reference values and acquiring a key state according a preset rule; if the key state is a key touched state, transmitting a prompt signal used for indicating the positional information; and if the key state is a key down state, transmitting the positional information. Thus, the above method can be used in keyboards in different types to simulate three states, including key touched, key down, and key untouched, of a conventional keyboard.
Description
Technical field
The present invention is about a kind of button triggering method of keyboard.
Background technology
Along with scientific and technological progress, the application of contact panel is more and more universal, particularly in capacitive contact panel.In general, capacitance type touch-control panel is the mode according to capacitive sensing, the position of the variation of capacitance on detecting panel, convert coordinate to via processor again and obtain the positional information of touching, finally convert again the position (for example: the position that the letter on keyboard or slide-mouse are clicked) of practice to.
But, capacitive contact panel is a smooth plane, be different from the mode of traditional mechanical keyboard, as long as finger slightly touching just can be responded to some extent, thus, user cannot continue the custom of general use mechanical keyboard, first touches the occupation mode that press target location again, must be correctly first from visually observing selected position of wanting to click, therefore the situation of false touch or some wrong position often occurs.
In view of this, the application of most of capacitance type touch-control panel, particularly in the part of capacitive touch controlled keyboard, common triggering mode is when detecting after user's pressing position, can immediately the alphabetical information of pressing position directly not sent, can want to be first shown on screen until after finger decontrols, then the alphabetical information of final stop place information representative is sent.For instance, in the time that a user wants to click " H " letter, user can first touch any position by single finger, as long as in the situation that this single finger is not decontroled, move to correct position by the mode sliding, just can not produce the situation generation of falsely dropping word.
But, use traditional mechanical keyboard for custom, particularly in the user who uses ten fingers to typewrite simultaneously, above-mentioned method cannot be suitable for completely.For instance, the user of general skilled typewriting, is the letter of wanting to click for pressing although moment only has a finger, and all the other nine fingers are still placed the ready position of corresponding alphabet key, and the typewriting mode of comparing single finger can increase the speed of typewriting.
Therefore, whether there are a kind of mechanism or device capacitive touch controlled keyboard can be able to be simulated to traditional mechanical keyboard, allow user can first touch the typewriting mode of pressing again target location, reduce the probability of false touch or some wrong position, allow capacitive touch controlled keyboard except possessing the advantage of oneself, also can continue the advantage of the traditional mechanical keyboard of simulation.
Summary of the invention
In view of above-mentioned shortcoming and invention motivation, the inventor urgently considers to the greatest extent, finally develops the present invention.A category of the present invention is to disclose a kind of button triggering method that is applied to contact panel, the situation that it presses (press) button by detecting user, simulates three kinds of states that traditional mechanical keyboard has contact, presses and do not contact on using.
Button triggering method of the present invention is pressed signal by receiving one, makes a keyboard press signal and obtain a positional information and multiple reference value according to this, then calculates a changing value according to those reference values, and obtain a key-press status according to a preset rules.In the time that this key-press status is a contact condition, send a cue in order to represent this positional information, in the time that this key-press status is a down state, send this positional information.
According to one embodiment of the invention, a kind of button triggering method that is applied to capacitive touch controlled keyboard, it comprises that step has: receive and one press signal, make this capacitive touch controlled keyboard press signal and obtain a positional information and multiple capacitance according to this; Calculate a capacitance variations value according to those capacitances, to obtain a key-press status; In the time that this key-press status is a contact condition (key touched), send a cue, in order to represent this positional information; In the time that this key-press status is a down state (key down), send this positional information.
According to another embodiment of the present invention, a kind of button triggering method that is applied to screen type keyboard, it comprises step: receive and one press signal, make this screen type touch control keyboard press signal and obtain a positional information and multiple area value according to this; Calculate an area changing value according to those area values, to obtain a key-press status; In the time that this key-press status is a contact condition, send a cue, in order to represent this positional information; And in the time that this key-press status is a down state, send this positional information.
Therefore, by above-mentioned method, the present invention utilizes reference value setting with its variable quantity, keyboard pressing state area to be divided into three kinds of states that contact, press and do not contact, and simulates by this traditional mechanical keyboard in using above, and custom first touches the use habit that press target location again.
Accompanying drawing explanation
Fig. 1 is the flow chart of an embodiment of button triggering method of the present invention.
Fig. 2 is the waveform schematic diagram of an embodiment of corresponding diagram 1 capacitance variation.
Fig. 3 is the flow chart of steps of an embodiment of step S12 in Fig. 1.
Fig. 4 is the flow chart of steps of another embodiment of step S12 in Fig. 1.
Fig. 5 is the waveform schematic diagram of an embodiment of corresponding diagram 4 capacitance variation.
Fig. 6 is the flow chart of another embodiment of button triggering method of the present invention.
Fig. 7 is the flow chart of steps of an embodiment of step S22 in Fig. 6.
[main element symbol description]
T
1very first time point t
2the second time point
C
1very first time point capacitance C
2the second time point capacitance
C
thcontact threshold value C
th2the second electric capacity threshold value
V
ppress rate value V
thpress speed threshold value
Embodiment
Disclose button triggering method of the present invention with embodiment below and be applied to dissimilar keyboard, simulate three kinds of states that traditional mechanical keyboard has contact, presses and do not contact on using.
Please refer to shown in Fig. 1 and Fig. 2, Fig. 1 is the flow chart of an embodiment of button triggering method of the present invention, and Fig. 2 is the waveform schematic diagram of an embodiment of corresponding diagram 1 capacitance variation.In this embodiment, button triggering method is applied to a capacitive touch controlled keyboard, and it comprises that step has: S10 receives and one presses signal, makes this capacitive touch controlled keyboard press signal and obtain a positional information and multiple capacitance according to this; S12 calculates a capacitance variations value according to those capacitances, to obtain a key-press status; S14, in the time that this key-press status is a contact condition (key touched), sends a cue, in order to represent this positional information; And S16 is in the time that this key-press status is a down state (key down), sends this positional information.
When a user touches this capacitive touch controlled keyboard, this capacitive touch controlled keyboard can be because user's touching produces capacity effect, and then find out the position that user touches, that is, as described in step S10, the capacitance that this capacitive touch controlled keyboard produces according to capacity effect is obtained the positional information of corresponding finger touches, and this positional information is corresponding to a key position.
But in order to reduce the burden of false touch or system computing, in general, this capacitive touch controlled keyboard can be preset with a contact threshold value C
th, the capacitance producing when capacity effect is lower than this contact threshold value C
thtime, can be regarded as noise or directly be left in the basket, be defined as not contact condition in this.In other words, have only higher than this contact threshold value C
tthe capacitance of h, just can be identified as effectively and press.Therefore, be at least more than or equal to default contact threshold value C in corresponding those capacitances of signal of pressing described in step S10
th.And this default contact threshold value C
thsize, the common skill personage that has of this case technical field knows, contact threshold value C
thsetting depend on accuracy and sensitivity between balance, contact threshold value C
thset higher accuracy higher, otherwise, contact threshold value C
thset lower sensitivity higher.
Please separately arrange in pairs or groups with reference to shown in figure 2 and Fig. 3, Fig. 3 is the flow chart of steps of an embodiment of step S12 in Fig. 1.According to an embodiment, step S12 judges the pressed state of keyboard by the speed of user's pressing keys, and it comprises step: S120 calculates one according to those capacitances and presses rate value V
p; Relatively this presses rate value V to S122
pwith one press speed threshold value V
th; S124 presses rate value V when this
pbe greater than this and press speed threshold value V
twhen h, setting this key-press status is this down state; S126 presses rate value V when this
pbe less than this and press speed threshold value V
thtime, setting this key-press status is this contact condition.
In order to simulate the button of corresponding traditional mechanical key dish, user can first be found want to press position (for example: character position) after again the application of force press, the characteristic being directly proportional to finger contact area by capacitance, when the finger application of force down will certainly can produce extruding and allow contact area increase pointing relative keyboard, make the capacitance of inductance capacitance increase, utilize by this variable quantity of capacitance to judge the speed that finger is pressed.
In simple terms, as shown in Figure 2, in very first time t
1with the second time t
2time interval in, when the slope of curve of capacitance variation is greater than default slope value, represent that user's presses rate value V
pbe greater than the default speed threshold value V that presses
th, accordingly, presses rate value V
pcan following relationship represent:
Wherein, C
1for the capacitance of the very first time, C
2be the capacitance of the second time, Δ T is time interval, and Δ C is capacitance variation amount.
In addition, the speed that the method for above-mentioned judgement key-press status is pressed by user, another embodiment shown in collocation Fig. 4 and Fig. 5, Fig. 4 is the flow chart of steps of another embodiment of step S12 in Fig. 1, Fig. 5 is the waveform schematic diagram of an embodiment of corresponding diagram 4 capacitance variation.
Step S12 can, by setting regular time interval, judge that capacitance size obtains key-press status, and in another embodiment, step S12 comprises step: S130 sets at least one set time section (timesegment); S132 obtains the respectively capacitance of this set time section correspondence; One average electrical capacitance of more at least one set time section of S134 and one second electric capacity threshold value C
th2; S136 works as this average electrical capacitance and is greater than this second electric capacity threshold value C
th2, setting this key-press status is this down state; And S138 is less than this second electric capacity threshold value C when this average electrical capacitance
th2, setting this key-press status is this contact condition.
When step S134 sets, to obtain capacitance be single set time section, and above-mentioned average electrical capacitance is this capacitance, and in like manner, when the capacitance of obtaining is from multiple set time sections, average electrical capacitance is the quantity of total capacitance value divided by set time section.
For instance, suppose that step S134 is take 3 time periods as unit, as long as be greater than the second electric capacity threshold value C in the average electrical capacitance of continuous 3 time periods
th2be judged to be down state; As shown in Figure 5,1st ~ 3 time periods were down state, and 4th ~ 6 time periods were contact condition, and 7th ~ 9 time periods were down state, although the capacitance of the 8th and 9 time periods is lower than the second electric capacity threshold value C
th2, but the average electrical capacitance of 7th ~ 9 time periods is still greater than the second electric capacity threshold value C
th2therefore, be still judged to be down state.Moreover 10th ~ 12 time periods are because capacitance is all lower than contact threshold value C
th, described in step S10, do not reach effectively and touch, therefore can directly be identified as not contact condition.
Therefore,, by the mode of above-mentioned steps S10 and S12, button triggering method of the present invention can be simulated three kinds of states that traditional mechanical keyboard has contact, presses and do not contact on using.
Because capacitive touch controlled keyboard cannot accomplish that, in traditional mechanical keyboard, each button can have the effect of spring, or there is clearance space between button and button, and allow the very clear position of knowing that oneself finger stops at present of user.In view of this, step S14 informs the information of the position representative of the current finger touch of user.
For instance, in the time that key-press status is touch condition, the mode that can show by screen shows letter, changes user in the time using capacitive touch controlled keyboard, must see the position of own finger presses, avoid the situation that produces wrongly written character because of false touch to occur.
This cue can be various ways, comprises the mode of single or its combination, and for example, this cue can be an image, a sound, voice or vibrations.According to diverse location information, the kind of the different cues of arranging in pairs or groups or combination.For instance, in the time that finger touches is arrived the position of " A " letter key by a user, can read " A " this letter by the mode of voice, allow user not need seeing keyboard typing.
It should be noted that working as cue is the mode of sound, voice or vibrations, its application can be benefited and be looked barrier friend, promotes the convenience on using.Braille because most depending on the familiar letter symbol of barrier friend, in order not change their input habit originally, can be by carry out braille design on the contact surface of capacitance keyboard, this is effect that at present general capacitance keyboard cannot be reached.
Please refer to Fig. 6, Fig. 6 is the flow chart of another embodiment of button triggering method of the present invention.Its principle concept and the above embodiments are similar, and difference is that the present embodiment is applied to screen type (for example projected keyboard or other) keyboard, and screen type keyboard utilization finger dead area triggers.Therefore by finger tip (touching) and the difference that refers to abdomen (pressing) size, also can reach three kinds of states that the traditional mechanical keyboard of simulation has contact, presses and do not contact on using.
In this embodiment, button triggering method comprises step: S20 receives and one presses signal, makes this screen type touch control keyboard press signal and obtain a positional information and multiple area value according to this; S22 calculates an area changing value according to those area values, to obtain a key-press status; S24, in the time that this key-press status is a contact condition, sends a cue, in order to represent this positional information; And S26 is in the time that this key-press status is a down state, sends this positional information.
The embodiment of similar above-mentioned capacitance keyboard, step S20 separately comprises a contact area threshold value, when the area receiving does not exceed this contact area threshold value, can be regarded as noise or directly be left in the basket, and is defined as not contact condition in this.
Please coordinate with reference to shown in figure 6 and Fig. 7, Fig. 7 is the flow chart of the sub-step of Fig. 6 step 22.According to an embodiment, step S22 comprises step: S220 sets at least one set time section; S222 obtains the respectively area value of this set time section correspondence; One average area value of more at least one set time section of S224 and a second area threshold value; S226 works as this average area value and is greater than this second area threshold value, and setting this key-press status is this down state; And S228 is less than this second area threshold value when this average area value, setting this key-press status is this contact condition.
When step S228 sets, to obtain area value be single set time section, above-mentioned average electrical capacitance is this corresponding area value, in like manner, when the area value of obtaining is from multiple set time sections, average area value is the quantity of total dead area divided by set time section.Step S24 is identical with above-mentioned steps S14 and S16 with S26, is no longer tired out and states.
Therefore, by above-mentioned step, three kinds of states that button triggering method of the present invention can be divided into the key-press status of keyboard contact, press and not contact by reference to the setting of value, simulate traditional mechanical keyboard by this in using above, and custom first touches the use habit that press target location again.
Only as described above, be only preferred embodiment of the present invention, when can not be in order to limit the enforceable scope of the present invention, all know this case field have common skill personage variation and the modification that obviously can do, all should be considered as not departing from flesh and blood of the present invention.
Claims (10)
1. a button triggering method, comprises step:
Receive and one press signal, make a keyboard press signal and obtain a positional information and multiple reference value according to this;
Calculate a changing value according to those reference values;
Obtain a key-press status according to a preset rules;
In the time that this key-press status is a contact condition, send a cue in order to represent this positional information; And
In the time that this key-press status is a down state, send this positional information.
2. a button triggering method, is applied to a capacitive touch controlled keyboard, and it comprises step:
Receive and one press signal, make this capacitive touch controlled keyboard press signal and obtain a positional information and multiple capacitance according to this;
Calculate a capacitance variations value according to those capacitances, to obtain a key-press status;
In the time that this key-press status is a contact condition, send a cue, in order to represent this positional information;
In the time that this key-press status is a down state, send this positional information.
3. button triggering method as claimed in claim 2, wherein, this calculates a capacitance variations value according to those capacitances, to obtain the step of a key-press status, comprising:
Calculate one according to those capacitances and press rate value;
Relatively this is pressed rate value and and presses speed threshold value;
In the time that this is pressed rate value and is greater than this and presses speed threshold value, setting this key-press status is this down state; And
In the time that this is pressed rate value and is less than this and presses speed threshold value, setting this key-press status is this contact condition.
4. button triggering method as claimed in claim 3, wherein, this calculating of pressing rate value is represented by following relationship:
VP presses rate value, t for this
1for very first time point, t
2be the second time point, C
1for t
1capacitance, C
2for t
2capacitance, △ T be that time interval and △ C are capacitance variation amount.
5. button triggering method as claimed in claim 2, wherein, this calculates a capacitance variations value according to those capacitances, to obtain the step of a key-press status, comprising:
Set at least one set time section;
Obtain respectively this capacitance corresponding to this time period;
The average electrical capacitance of more at least one time period and one second electric capacity threshold value;
When this average electrical capacitance is greater than this second electric capacity threshold value, setting this key-press status is this down state; And
When this average electrical capacitance is less than this second electric capacity threshold value, setting this key-press status is this contact condition.
6. button triggering method as claimed in claim 5, wherein, this average electrical capacitance is that the summation of this capacitance of obtaining from those set time sections is divided by the quantity of this time period.
7. button triggering method as claimed in claim 2, wherein, this capacitive touch controlled keyboard has the design of a braille structure, and person uses to look barrier for one.
8. button triggering method as claimed in claim 1, wherein, this cue is an image, a sound, voice or a vibration signal.
9. a button triggering method, is applied to a screen type touch control keyboard, and it comprises step:
Receive and one press signal, make this screen type touch control keyboard press signal and obtain a positional information and multiple area value according to this;
Calculate an area changing value according to those area values, to obtain a key-press status;
In the time that this key-press status is a contact condition, send a cue, in order to represent this positional information; And
In the time that this key-press status is a down state, send this positional information.
10. button triggering method as claimed in claim 9, wherein, this calculates an area changing value according to those area values, to obtain the step of a key-press status, comprising:
Set at least one set time section;
Obtain respectively area value corresponding to this time period;
One average area value of more at least one set time section and a second area threshold value;
When this average area value is greater than this second area threshold value, setting this key-press status is this down state; And
When this average area value is less than this second area threshold value, setting this key-press status is this contact condition.
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| CN201210439042.6A CN103812493A (en) | 2012-11-06 | 2012-11-06 | Key trigger method |
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| CN201210439042.6A CN103812493A (en) | 2012-11-06 | 2012-11-06 | Key trigger method |
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| CN105894795A (en) * | 2015-12-03 | 2016-08-24 | 乐视移动智能信息技术（北京）有限公司 | Infrared remote control method and device and mobile terminal |
| CN112350707A (en) * | 2020-09-30 | 2021-02-09 | 青岛海尔智能家电科技有限公司 | Method and device for controlling touch switch and all-metal switch |
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Application publication date: 20140521 |