CN101498979B - Method for implementing virtual keyboard by utilizing condenser type touch screen - Google Patents
Method for implementing virtual keyboard by utilizing condenser type touch screen Download PDFInfo
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- CN101498979B CN101498979B CN2009100248010A CN200910024801A CN101498979B CN 101498979 B CN101498979 B CN 101498979B CN 2009100248010 A CN2009100248010 A CN 2009100248010A CN 200910024801 A CN200910024801 A CN 200910024801A CN 101498979 B CN101498979 B CN 101498979B
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Abstract
The invention relates to a method for realizing a virtual keyboard by using a capacitive touch screen. Whether a user strikes a virtual button is judged by detecting and judging the induction pressure of the touched virtual button by a touched object is greater than or equal to a preset induction pressure; if the induction pressure of the touched virtual button by a touched object is greater than or equal to a preset induction pressure, corresponding strike confirmation command of the touched virtual button is sent to a host computer, and the control touch screen of the host computer displays the corresponding characters of the virtual button and/or carries out a key command. The method for realizing a virtual keyboard by using a capacitive touch screen provided by the invention can efficiently avoid error touch actions so that the real intention of the user is understood by identifying and judging the induction pressure of the touch screen by the touched object (finger, touch control pen). Multi-point touch technology is used so that multiple points can be simultaneously identified and the combination operation of multiple buttons can be realized by using the virtual keyboard.
Description
Technical field
The present invention relates to the method for touch-screen applications in man-machine input system, especially a kind of method of utilizing capacitive touch screen to realize dummy keyboard.
Background technology
The keyboard input is traditional, the most general present a kind of input mode, people utilize the combination of different key on the keyboard to carry out various inputs, but since under a lot of situations of electronic product in order to pursue portability, to pursue small size, in addition to the requirement of large display screen, often make keyboard less, button is less, is unfavorable for operation.
Adopt touch screen design, this will be the development trend of small-sized notebook computer and smart mobile phone.Small-sized notebook computer be exactly small and exquisite by volume, be easy to carry and cheap and be subjected to the favor in market, in limited volume, how to save cost, and reasonable Arrangement element, be that a lot of manufacturers are making great efforts improved problem always, adopt touch screen design, combined with virtual keyboard and refer to touch function more, can make notebook computer save the space of devices such as keyboard, Trackpad, mouse, be used for more distributing rationally other functional module.Can reduce the cost greatly, and the configuration design of complete machine there has been more selection, can have satisfied low-medium-high level user's different demands.
At above-mentioned situation, people have developed a kind of dummy keyboard, and it can show more button by the area of touch-screen.Typical case's representative in the smart mobile phone is " iphone " mobile phone of Apple, and it has only a button, full touch-screen form, and switching to the literal inputting interface has the dummy keyboard on the touch-screen to import.
The input mode of dummy keyboard is on the capacitive touch screens such as existing small-sized notebook computer and smart mobile phone: when the finger or the capacitance touching control pen touch certain button on the dummy keyboard, during such as letter (a), this button (a) can become big or become another kind of color, touched this button with the prompting user, when finger or capacitance pen when leaving touch-screen, the viewing area of this touch-screen can show that this button (a) is to the viewing area or carry out other instructions that this button sends.
The dummy keyboard of this class capacitance plate no doubt is quick on the draw, but a very big shortcoming is arranged: when finger or capacitance touching control pen touch button, as long as finger or touch control capacitance pen one leave touch-screen, will show letter in the viewing area or carry out the order of this button.When our finger or capacitance pen when running into button because of carelessness, also can be performed the order of this button.Though, existing resistance screen can overcome this misoperation, because the resistance screen wants certain pressure just can carry out action to button, and it is to be difficult to accomplish to many finger identifications that the resistance screen has a fatal shortcoming, and keyboard is must multiple spot be discerned, as realizing capital and small letter function etc. by " shift " and letter.
Summary of the invention
The objective of the invention is to overcome the defective of above-mentioned touch virtual keyboard, utilize touch-screen, touch-control chip and single-chip microcomputer to detect, and solve the misoperation that produces because of careless touch by the pressure recognition function to shielding coordinate information.
Technical scheme of the present invention is:
A kind of method of utilizing capacitive touch screen to realize dummy keyboard comprises touch-screen 1 is provided, and it is characterized in that further comprising the steps of:
A) carry out related with main frame 2 touch-screen 1; B) show default dummy keyboard interface 3 by host computer control touch-screen 1, default virtual key 4 on the dummy keyboard interface 3; C) detect the positional information that touches the touching object on the dummy keyboard interface 3; If touch objects touch is to one or more virtual keys 4, then d) send the touched virtual key that arrives 4 pairing positional informations to main frame; E) host computer control touch-screen 1 shows the activation display message of virtual key 4; F) detect the induction pressure of touching object to the touched virtual key that arrives 4; G) detect and judge the touching object to the induction pressure of the touched virtual key that arrives 4 whether more than or equal to a predetermined inductive pressure; If the touching object to the induction pressure of the touched virtual key that arrives 4 more than or equal to a predetermined inductive pressure, h then) to main frame send touched to virtual key 4 pairing knocking confirm instruction, and host computer control touch-screen 1 shows these virtual key 4 pairing characters and/or carries out key command; If the touching object to the induction pressure of the touched virtual key that arrives 4 less than a predetermined inductive pressure, then execution in step c).
The activation display message of described virtual key 4 is shown as the color of amplifying or dwindling or changing demonstration for this virtual key 4.
The kind of described virtual key 4 is digital keys, character keys or function button.
Described touching object is flexible pointer for pointing or touch nib.
Described touch-screen 1 posts the condenser type multi-point touch panel of indium tin oxide transparent conductive semiconductor film for the surface.
Described step g) may further comprise the steps:
Default several capacitive sensing unit 100 on touch-screen, the area of each capacitive sensing unit 100 is as the induction area S0 of unit; Detect the number and the position that in the touched virtual key that arrives 4 zones capacitive sensing unit 100 of capacitance variation take place; Calculate and also to draw this touched virtual key that arrives 4 pairing induction area S101, induction area S101 be take place in the touched virtual key that arrives 4 zones capacitance variation capacitive sensing unit 100 the induction area S0 of unit area and; Relatively this touched to virtual key 4 pairing induction area S101 and default threshold values induction area Stap size and judge: if should be touched to virtual key 4 pairing induction area S101 greater than or wait the threshold values induction area Stap that equals to preset, then judgement touch object to the induction pressure of the touched virtual key that arrives 4 more than or equal to a predetermined inductive pressure; If this touched virtual key that arrives 4 pairing induction area S101 less than default threshold values induction area Stap, then judge touch object to the induction pressure of the touched virtual key that arrives 4 less than a predetermined inductive pressure.
The invention has the beneficial effects as follows:
The method of utilizing capacitive touch screen to realize dummy keyboard provided by the invention can effectively avoid false touch to touch action, by touching object (finger, pointer) is discerned, judged the induction pressure of touch-screen, thereby understands user's real intention.Adopt the multiple point touching technology, can discern multiple spot simultaneously, can utilize dummy keyboard to realize the combination operation of many buttons.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Fig. 2 is the synoptic diagram one of embodiments of the invention.
Fig. 3 is the synoptic diagram two of embodiments of the invention.
Fig. 4 is the synoptic diagram three of embodiments of the invention.
Fig. 5 is the synoptic diagram four of embodiments of the invention.
Fig. 6 is the syndeton synoptic diagram of touch-screen of the present invention and main frame.
Fig. 7 is the syndeton synoptic diagram of co-ordinate position information processing unit of the present invention and touch-screen.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
In conjunction with Fig. 6, Fig. 7, the condenser type multi-point touch panel that posts indium tin oxide transparent conductive semiconductor film with the surface is the example explanation, the indium tin oxide panel 10 of touch-screen 1 is connected coordinate information processing unit 13 and liquid crystal driver module 12 respectively with liquid crystal module 11, and liquid crystal driver module 12 is connected with main frame 2 with connecting line by communication interface with coordinate information processing unit 13.
Coordinate information processing unit 13 comprises touch-control chip 130 and microprocessor 131, the sweep trace of indium tin oxide panel 10 is connected with the sweep trace pin of touch-control chip 130, the signal output part of touch-control chip 130 connects the signal input part of microprocessor MCU131, and the signal output part of microprocessor MCU131 is connected with main frame 2 with connecting line by communication interface.
A number of touch-control chip 130 is decided by the area of touch-screen 1, and the touch-screen 1 below 4.3 cun uses one piece of touch-control chip 130 that has 32 sweep traces just can realize method of the present invention.8.9 very little or larger sized touch-screen 1 can connect many pieces of touch-control chips 130.
Default several capacitive sensing unit 100 on the indium tin oxide panel 10 of touch-screen 1, the area of each capacitive sensing unit 100 is as the induction area S0 of unit.The area of each capacitive sensing unit 100 can be each junior unit that the sweep trace network constituted or the area of the unit inductance capacitance on the sweep trace.
A kind of method of utilizing capacitive touch screen to realize dummy keyboard comprises touch-screen 1 is provided, and it is characterized in that further comprising the steps of:
At first, carry out related with main frame 2 touch-screen 1; By host computer control liquid crystal driver module 12, after entering the dummy keyboard mode, show default dummy keyboard interface 3 by host computer control touch-screen 1, as Fig. 2, default virtual key 4 on the dummy keyboard interface 3, but the button of virtual key 4 reference standard computor-keyboards, the kind of virtual key 4 are digital keys, character keys or function button.Dummy keyboard interface 3 can be positioned at the below of touch-screen 1 to meet most users' custom, certainly, also can be presented at arbitrary zone of touch-screen 1.
Then, detect the positional information that touches the touching object on the dummy keyboard interface 3 by the touch-control chip in the coordinate position processing unit 13 130; If detect touch objects touch to one or more virtual keys 4, then by the microprocessor MCU131 in the coordinate position processing unit 13 to main frame send touched to virtual key 4 pairing positional informations.
Then, host computer control touch-screen 1 shows the activation display message of virtual key 4, and the activation display message of virtual key 4 is shown as the color of amplifying or dwindling or changing demonstration for this virtual key 4; Simultaneously, detect by the touch-control chip in the coordinate position processing unit 13 130 and judge the touching object to touched to the induction pressure of virtual key 4 whether more than or equal to a predetermined inductive pressure; If the touching object to the induction pressure of the touched virtual key that arrives 4 more than or equal to a predetermined inductive pressure, then by the microprocessor MCU131 in the coordinate position processing unit 13 to main frame send touched to pairing the knocking of virtual key 4 confirm instruction, and show these virtual key 4 pairing characters and/or carry out key command by host computer control touch-screen 1.If the touching object less than a predetermined inductive pressure, then is repeated below step to the induction pressure of the touched virtual key that arrives 4: detect the positional information that touches the touching object on the dummy keyboard interface 3 by the touch-control chip in the coordinate position processing unit 13 130.
In the above-mentioned steps, detect and judge the touching object to touched to the induction pressure of virtual key 4 whether may further comprise the steps more than or equal to a predetermined inductive pressure:
Default several capacitive sensing unit 100 on touch-screen 1, the area of each capacitive sensing unit 100 is as the induction area S0 of unit; Detect the number and the position that in the touched virtual key that arrives 4 zones capacitive sensing unit 100 of capacitance variation take place; Calculate and also to draw this touched virtual key that arrives 4 pairing induction area S101, induction area S101 be take place in the touched virtual key that arrives 4 zones capacitance variation capacitive sensing unit 100 the induction area S0 of unit area and; Relatively these the touched virtual key that arrives 4 pairing induction area S101 also judge with default the big or small of threshold values induction area Stap:
If should be touched to virtual key 4 pairing induction area S101 greater than or wait the threshold values induction area Stap that equals to preset, then judgement touch object to the induction pressure of the touched virtual key that arrives 4 more than or equal to a predetermined inductive pressure; Such criterion meets conventional touch-screen use-pattern, because finger or flexible touch pen point have certain flexibility, and the indium tin oxide panel 10 of touch-screen 1 is a rigidity, so when finger or flexible touch pen point apply the pressure of variation to the indium tin oxide panel 10 of touch-screen 1, it with the real area that indium tin oxide panel 10 is contacted respective change takes place also: promptly pressure is big more, the real area that is contacted with indium tin oxide panel 10 is also big more, pressure is more little, the real area that is contacted with indium tin oxide panel 10 is also more little, can be used as the criterion that the identification user truly knocks the intention expression with this.Simultaneously, utilize the area of each junior unit that indium tin oxide panel 10 upper tracer networks are constituted or the unit inductance capacitance on the sweep trace to indicate finger or flexible touch pen point that indium tin oxide panel 10 applied pressures of touch-screen 1 are changed indirectly, to reach the purpose that actual pressure is converted into the variation of 1 inductance capacitance that can discern of capacitive touch screen.
If this touched virtual key that arrives 4 pairing induction area S101 less than default threshold values induction area Stap, then judge touch object to the induction pressure of the touched virtual key that arrives 4 less than a predetermined inductive pressure.
Threshold values induction area Stap can adjust according to actual needs, is limited to an induction area S0 of unit down.Also predeterminable a plurality of different value is to adapt to the different user's of skill level use-pattern.
The touching object can be finger or pointer, and the touching nib of pointer is advisable with flexibility touching nib.And can touch touch-screen 1 simultaneously by a plurality of touch pen point of a plurality of fingers or an a plurality of pointer or a pointer.
In conjunction with Fig. 2 to Fig. 5, after entering the dummy keyboard mode, when light finger contacted virtual key " A " on the dummy keyboard interface 3, system can discern that this virtual key " A " is touched to be arrived, and the virtual key " A " on this moment dummy keyboard interface 3 is activated and is shown as and becomes big; If this moment, the user thinks further to press virtual key " A ", then can continue this virtual key " A " is applied bigger pressure, have only when touching induction pressure more than or equal to a predetermined inductive pressure, system just discerns the fill order of virtual key " A ", and demonstrates the pairing character of virtual key " A " " a " in the viewing area 5 of touch-screen 1; If the touching induction pressure is during less than a predetermined inductive pressure and finger when still touching virtual key " A ", system only can keep showing the activation display message of this virtual key 4, but can not carry out key command.The so just action of effectively having avoided false touch to touch.After user's finger left virtual key 4 zones on the dummy keyboard interface 3, virtual key 4 no longer was activated, and no longer shows to activate display message.
The number of the virtual key 4 that the present invention can discern at most is 10, and generally speaking, using maximum is " Ctrl ", " Alt " and " Del " these 3 virtual keys 4.
The hardware and software part that the present invention does not relate to all can be passed through existing techniques in realizing, and the using method about keyboard that the present invention does not relate to all can be with reference to existing keyboard using method.
Claims (5)
1. a method of utilizing capacitive touch screen to realize dummy keyboard comprises touch-screen (1) is provided, and it is characterized in that further comprising the steps of:
A) carry out related with main frame (2) touch-screen (1);
B) show default dummy keyboard interface (3) by host computer control touch-screen (1), dummy keyboard interface (3) go up default virtual key (4);
C) detect the positional information that touches the touching object on the dummy keyboard interface (3);
If touch objects touch is to one or more virtual keys (4), then
D) send the pairing positional information of the touched virtual key that arrives (4) to main frame;
E) host computer control touch-screen (1) shows the activation display message of virtual key (4);
F) detect the induction pressure of touching object to the touched virtual key that arrives (4);
G) whether detection and judgement touching object, may further comprise the steps more than or equal to a predetermined inductive pressure the induction pressure of the touched virtual key that arrives (4):
Default several capacitive sensing unit (100) on touch-screen, the area of each capacitive sensing unit (100) is as the induction area S0 of unit;
Detect the number and the position that in the touched virtual key that arrives (4) zone capacitive sensing unit (100) of capacitance variation take place;
Calculate and also to draw this pairing induction area S of touched virtual key that arrives (4) (101), induction area S (101) for the area of the induction area S0 of unit of capacitive sensing unit (100) that capacitance variation takes place in the touched virtual key that arrives (4) zone and;
Relatively this pairing induction area S of touched virtual key that arrives (4) (101) also judges with default the big or small of threshold values induction area Stap:
If this pairing induction area S of touched virtual key that arrives (4) (101) is more than or equal to default threshold values induction area Stap, then
Judge the touching object to the induction pressure of the touched virtual key that arrives (4) more than or equal to a predetermined inductive pressure;
If this pairing induction area S of touched virtual key that arrives (4) (101) is less than default threshold values induction area Stap, then
Judge the touching object to the induction pressure of the touched virtual key that arrives (4) less than a predetermined inductive pressure;
If the touching object to the induction pressure of the touched virtual key that arrives (4) more than or equal to a predetermined inductive pressure, then
H) to main frame send touched to pairing the knocking of virtual key (4) confirm instruction, and
Host computer control touch-screen (1) shows the pairing character of this virtual key (4) and/or carries out key command;
If the touching object to the induction pressure of the touched virtual key that arrives (4) less than a predetermined inductive pressure, then execution in step c).
2. the method for utilizing capacitive touch screen to realize dummy keyboard according to claim 1 is characterized in that the activation display message of described virtual key (4) is shown as the color of amplifying or dwindling or changing demonstration for this virtual key (4).
3. the method for utilizing capacitive touch screen to realize dummy keyboard according to claim 1, the kind that it is characterized in that described virtual key (4) is digital keys, character keys or function button.
4. the method for utilizing capacitive touch screen to realize dummy keyboard according to claim 1 is characterized in that described touching object is flexible pointer for pointing or touch nib.
5. the method for utilizing capacitive touch screen to realize dummy keyboard according to claim 1 is characterized in that described touch-screen (1) posts the condenser type multi-point touch panel of indium tin oxide transparent conductive semiconductor film for the surface.
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| CN2009100248010A CN101498979B (en) | 2009-02-26 | 2009-02-26 | Method for implementing virtual keyboard by utilizing condenser type touch screen |
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| CN2009100248010A CN101498979B (en) | 2009-02-26 | 2009-02-26 | Method for implementing virtual keyboard by utilizing condenser type touch screen |
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| CN108710465A (en) * | 2018-03-19 | 2018-10-26 | 西安艾润物联网技术服务有限责任公司 | License plate number input method virtual key display control method, storage medium and user terminal |
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