CN101807126A - Touch pen and method for realizing touch function - Google Patents
Touch pen and method for realizing touch function Download PDFInfo
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- CN101807126A CN101807126A CN201010144596A CN201010144596A CN101807126A CN 101807126 A CN101807126 A CN 101807126A CN 201010144596 A CN201010144596 A CN 201010144596A CN 201010144596 A CN201010144596 A CN 201010144596A CN 101807126 A CN101807126 A CN 101807126A
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Abstract
The embodiment of the invention provides a touch pen and a method for realizing the touch function. The touch pen comprises an acceleration sensor, a pressure sensor and a processor, wherein the acceleration sensor is used for measuring the acceleration of the touch pen during the movement; the pressure sensor is used for sensing a functional item selected by the touch pen on a display screen and outputting the selected information; and the processor is used for calculating the position information of the selected functional item and sending the position information to a host based on the acceleration measured by the acceleration sensor when receiving the selected information, so that the host enables the corresponding function based on the position information. The embodiment of the invention can realize the touch function without using special touch screens, thereby reducing the cost.
Description
Technical field
The present invention relates to terminal technology, relate in particular to the method for a kind of felt pen and realization touch function.
Background technology
Display screen is the important output device of various intellectual computing devices, and the user can in time understand the running status of current device by display screen.Occurred a kind of touch-screen in the display screen of current use, by touch-screen, the user can remove input equipments such as keyboard, mouse from, and the user is selection function, input characters etc. on touch-screen directly.That is, touch-screen combines input, output function.The technology of touch-screen use at present mainly contains two kinds of condenser type, resistance-types, is mainly detected the electric capacity or the resistance variations of current screen by display screen.The screen of touch-screen needs special display screen, and needs specific testing circuit.When the screen of touch-screen was big more, its price was all the more expensive.
In realizing process of the present invention, the inventor finds prior art, and there are the following problems at least: the realization of touch function needs special touch-screen, and special touch-screen cost is higher.
Summary of the invention
The embodiment of the invention provides a kind of felt pen and realizes the method for touch function, in order to the cost problem of higher that the realization that solves touch function needs special touch-screen to cause, reaches non-touch panel device and realizes touch function.
The embodiment of the invention provides a kind of felt pen, comprising:
Acceleration transducer, the acceleration when being used to measure described felt pen and moving;
Pressure transducer is used for the touch sensitive pen and chooses function items on the display screen, and information is chosen in output;
Processor is used to receive described when choosing information, according to the acceleration that described acceleration transducer is measured, calculates the positional information of the function items of choosing, and described positional information is sent to main frame, so that main frame starts corresponding function according to described positional information.
The embodiment of the invention provides a kind of method that realizes touch function, comprising:
Acceleration when the measurement felt pen moves;
When being elected to the function items on the middle display screen, information is chosen in output;
According to the acceleration of measuring, calculate the positional information of the function items of choosing;
Described positional information is sent to main frame, so that the function of the described function items correspondence of choosing of described host-initiated.
As shown from the above technical solution, the felt pen of the embodiment of the invention can send to main frame with the positional information of choosing, and by the host-initiated corresponding function, realization need not touch-screen and realizes touch function.Owing to need not special touch-screen, can reduce cost.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done an introduction simply in will describing embodiment below, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the felt pen of first embodiment of the invention;
Fig. 2 is the structural representation of the felt pen of second embodiment of the invention;
Fig. 3 is the schematic flow sheet of the method for second embodiment of the invention;
Fig. 4 is the position dimension synoptic diagram of display screen in the embodiment of the invention;
Fig. 5 is the structural representation of system of the application scenarios one of the embodiment of the invention;
Fig. 6 is the structural representation of system of the application scenarios two of the embodiment of the invention;
Fig. 7 is the structural representation of the felt pen of third embodiment of the invention;
Fig. 8 is the schematic flow sheet of the method for third embodiment of the invention;
Fig. 9 is the alliance synoptic diagram of third embodiment of the invention;
Figure 10 adopts felt pen to measure the synoptic diagram at display screen pitch angle in the third embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is the structural representation of the felt pen of first embodiment of the invention, comprises acceleration transducer 11, pressure transducer 12 and processor 13; Acceleration when acceleration transducer 11 is used to measure described felt pen and moves; Pressure transducer 12 is used for the touch sensitive pen and chooses function items on the display screen, and information is chosen in output; Processor 13 is used to receive described when choosing information, acceleration according to described acceleration transducer 11 measurements, the positional information of the function items that calculating is chosen, and described positional information sent to main frame, so that main frame starts corresponding function according to described positional information.
Wherein, interface between acceleration transducer 11 and the processor 13 can be universal serial port, for example, serial peripheral interface (Serial Peripheral Interface, SPI), internal integrated circuit (Inter-Integrated Circuit, I2C) interface, UART Universal Asynchronous Receiver Transmitter (Universal AsynchronousReceiver/Transmitter, UART) interface etc.
The positional information of the function items that present embodiment can be chosen felt pen sends to main frame, and by the corresponding function that host-initiated obtains according to positional information, realization need not touch-screen and realizes touch function.Owing to need not special touch-screen, can reduce cost.
Fig. 2 is the structural representation of the felt pen of second embodiment of the invention, and present embodiment can be applied in when choosing function items, under the scene of the vertical display screen of felt pen.
In the present embodiment, because the vertical display screen of felt pen when choosing function items, therefore, the projection of all modules on display screen is identical on the felt pen, be that the position coordinates of each module on display screen is identical, therefore, acceleration transducer is the position coordinates of pressure transducer on display screen at the position coordinates on the display screen.
In the embodiment of the invention, because pressure transducer is as choosing the module of induction, therefore, the position coordinates of pressure transducer on display screen is the position coordinates of the function items chosen.
So, elected in during function items during the vertical display screen of felt pen, the position coordinates of the function items of choosing is the position coordinates of acceleration transducer on display screen.
According to physics principle, because acceleration is measured by acceleration transducer, therefore the position coordinates that utilizes acceleration to measure in real time is the position coordinates of acceleration transducer on display screen.
In the present embodiment, because when choosing function items, the position coordinates of acceleration transducer on display screen is identical with the position coordinates of the function items of choosing, therefore, the position coordinates of the function items of choosing that measure is processor and receives the position coordinates of acceleration transducer on display screen that obtains according to acceleration calculation when choosing information.
Referring to Fig. 2, present embodiment comprises acceleration transducer 21, pressure transducer 22 and processor 23.Concrete function can be referring to first embodiment.
Wherein, function items can be menu, toolbar (toolbar) or icon (ICON) etc.
Present embodiment can further include communication interface 24, and communication interface 24 is used for connection processing device 23 and main frame.Communication interface 24 can be wired mode, and (Universal SerialBus USB), perhaps also can be wireless mode, for example bluetooth as USB (universal serial bus).
Present embodiment can further include modifier key 25, and modifier key 25 is used for starting to be measured, so that described processor begins to calculate in real time the positional information of acceleration transducer on display screen after starting measurement.
The processor 23 of present embodiment comprises first processing unit 231, first processing unit 231 is used for the acceleration according to described acceleration transducer 21 measurements, start measurement from described modifier key 25, calculate the position coordinates of described acceleration transducer 21 on described display screen in real time, described when choosing information with what receive 22 outputs of described pressure transducer, the position coordinates of described acceleration transducer 21 on described display screen is as the position coordinates of the function items of choosing, afterwards, the positional information of the function items that obtains choosing according to the size of the position coordinates of the function items of choosing and display screen.
Further, present embodiment can also comprise power supply 26, and wherein, the input of power supply 26 can be the power supply that main frame provides, and also can be the power supply that provides of battery of apolegamy.
Present embodiment can be realized touch function in the following way:
Fig. 3 is the schematic flow sheet of the method for second embodiment of the invention, comprising:
Step 31: with certain point on the display screen is relative initial point (that is, as starting point), is started by modifier key at relative initial point and measures.
Fig. 4 is the position dimension synoptic diagram of display screen in the embodiment of the invention, referring to Fig. 4, suppose with 1 be relative initial point, then 1 respectively with 2 and 3 s' relative position, be the size L and the W of display screen.
Step 32: felt pen is by pushing the function items of choosing on the display screen, and output chose information to give processor after pressure transducer was sensed and pushed.
Wherein, pressure transducer can be positioned at the nib position of felt pen.Choose information can be the semaphore that changes, for example, magnitude of voltage.
Step 33: when felt pen was chosen function items, processor calculated the position coordinates of acceleration transducer on display screen.
Wherein, after modifier key startup measurement, processor can calculate the position coordinates of acceleration transducer on display screen in real time.Modifier key can be given processor by output level after starting measurement, calculates in real time so that processor is known beginning.Real-time computing technique can be as follows:
Referring to Fig. 4, suppose that acceleration transducer is that the real time position coordinate of starting point is respectively X with relative initial point (point 1) on display screen
N, Y
NWith measured X
NBe example, position coordinates can be measured in the following way:
Because there are following relation in position, speed and acceleration:
Wherein, X
n, X
N-1Represent the adjacent corresponding position of two discrete time points, V
n, V
N-1Represent the corresponding speed of adjacent two discrete time points, a represents real time acceleration, and Δ t represents the mistiming of predefined adjacent two discrete time points.
Because the three-dimensional real time acceleration when acceleration transducer can be measured felt pen and moves, and initial position, acceleration and the speed of felt pen is respectively 0, i.e. X
0=0, a
0=0, V
0=0.Therefore, the acceleration with the traveling time and the acceleration transducer of felt pen are measured adopts the above-mentioned relation formula to carry out real-time integration and can obtain real time position X
n
For example, because Δ t preestablishes the mistiming, be known quantity, can obtain starting after the measurement through the real time acceleration a behind the Δ t by acceleration transducer
1, and, X
0=0, V
0=0, therefore, can obtain through the position X behind the Δ t according to the relation of acceleration, speed, position
1=a
1* (Δ t)
2, the rest may be inferred, can obtain real time position X
N, wherein,
Expression rounds downwards, and traveling time is represented to measure current measured X from startup
NThe time mistiming.
The position coordinates Y of another dimension of acceleration transducer
NAlso can adopt measured X
NMode measure, repeat no more.
Can obtain the real time position coordinate of acceleration transducer on display screen by above-mentioned real-time integral and calculating, because position coordinates can obtain in real time, therefore the position coordinates of correspondence also is available when choosing information when processor receives, and is assumed to be X and Y.
Step 34: when felt pen was chosen function items, processor calculated the positional information of the function items of choosing.
Because felt pen is perpendicular to display screen in the present embodiment, therefore, acceleration transducer is the position coordinates of pressure transducer on display screen, the position coordinates of the function items of also promptly choosing at the position coordinates on the display screen.So the position coordinates of the function items of choosing is X and Y.
Wherein, positional information can be the ratio of the size of the position coordinates of the function items chosen and display screen.For example, this positional information is X/L and Y/W.
The size L of display screen, W also can adopt above-mentioned to X
NMetering system measure, at this moment, modifier key 25 also is used for finish measuring.For example, be example to measure L, start measurement at 1 by modifier key, start the information of measuring and pass to processor by modifier key; When felt pen moves at 2, finish to measure by modifier key, the information that finishes to measure passes to processor by modifier key.Wherein, can set modifier key that is used to start and the modifier key that is used to finish respectively, perhaps, only set a modifier key,, press once expression again and finish measurement by once expression startup measurement.Afterwards, measure from starting, processor can calculate the positional information of felt pen in real time, owing to be real-time measurement, can obtain L and W when therefore finishing to measure.
Step 35: processor is with the positional information of the function items chosen, and for example, above-mentioned size sends to main frame than X/L and Y/W by communication interface.
Wherein, communication interface can be wired mode, for example, and the USB mode; Also can be wireless mode, for example, bluetooth approach.
Step 36: main frame is determined the function items chosen, starts function corresponding.
For example, the upper application software of main frame can be provided with the corresponding relation of function items and position coordinates, and this corresponding relation can be arranged to different corresponding relations according to the size of different display resolutions or display screen.Afterwards, after main frame receives positional information (as above-mentioned size than X/L, Y/W), can be according to the big or small L of the current display screen of main frame, position coordinates X, the Y that W calculates function items, again according to the current display resolution of main frame or the setting of display screen, find the corresponding function items and the corresponding relation of position coordinates, afterwards, find corresponding function items according to corresponding relation and the X that calculates, Y.Afterwards, can start function corresponding.
Fig. 5 is the structural representation of system of the application scenarios one of the embodiment of the invention, and Fig. 6 is the structural representation of system of the application scenarios two of the embodiment of the invention.Referring to Fig. 5 or Fig. 6, felt pen can be connected with main frame by wired mode or wireless mode, and display screen adopts common display screen, need not special touch-screen.
Present embodiment is measured the position coordinates of acceleration transducer on display screen by processor, because when felt pen is vertical with display screen, the position coordinates of the function items of choosing is identical with the position coordinates of acceleration transducer on display screen, therefore, the position coordinates of acceleration transducer on display screen that measures according to processor, the positional information of the function items that can obtain choosing, after processor sends to main frame with this positional information, can be so that main frame starts corresponding function according to this positional information.Realization need not special touch-screen and realizes touch function, reduces cost.
Usually, when the user uses felt pen, can not be forever perpendicular to display screen, at this moment, the position coordinates of the function items of choosing is not the position coordinates of acceleration transducer on display screen.Can realize in the following way:
Fig. 7 is the structural representation of the felt pen of third embodiment of the invention, present embodiment can be applied in elected in during function items, under the scene of felt pen out of plumb display screen.Referring to Fig. 7, present embodiment comprises acceleration transducer 71, pressure transducer 72, processor 73 and communication interface 74, can further include modifier key 75 and power supply 76.The concrete function of above-mentioned module can be referring to second embodiment.
Among the present embodiment and second embodiment, because acceleration is measured by acceleration transducer, therefore, the position coordinates that measures in real time according to acceleration is the position coordinates of acceleration transducer on display screen.
In a second embodiment, since when choosing function items felt pen perpendicular to display screen, so the position coordinates of the function items of choosing is identical with the position coordinates of acceleration transducer on display screen.Therefore, the position coordinates of acceleration transducer on display screen that can measure when choosing function items is as the position coordinates of the function items of choosing.
But, in the present embodiment, because felt pen is non-perpendicular to display screen when choosing function items, at this moment, the position coordinates of the function items of choosing and the acceleration transducer position coordinates on display screen is inequality, therefore, after measuring the position coordinates of acceleration transducer on display screen, also need further the position coordinates of the function items that obtains choosing according to correlation parameter.Specific as follows:
Present embodiment further comprises gyroscope 77, and gyroscope 77 is used to measure the angle of inclination of described felt pen and vertical direction when choosing function items.Wherein, the interface between gyroscope 77 and the processor 73 can be universal serial port, for example, and SPI, I2C, UART etc.
The processor 73 of present embodiment comprises first processing unit 731 and second processing unit 732, first processing unit 731 is used for the acceleration according to described acceleration transducer 71 measurements, start measurement from described modifier key 75, calculate the position coordinates of described acceleration transducer 71 on described display screen in real time.Second processing unit 732 is used to receive described when choosing information, calculate the positional information of the function items of choosing, wherein, the positional information of the function items of choosing can obtain according to the position coordinates of the function items of choosing and the size of display screen, the parameter that need adopt when wherein, calculating the position coordinates of the function items choose comprises the distance of described angle of inclination, described acceleration transducer position coordinates, described pressure transducer and the described acceleration transducer on described display screen.Wherein, the distance of pressure transducer and acceleration transducer fixedly installs when felt pen is installed, and therefore, this distance can be used as known quantity.
Present embodiment is compared with second embodiment, calculating acceleration transducer behind the position coordinates on the display screen, also need to calculate the position coordinates of the function items of choosing according to above-mentioned parameter, rather than as the position coordinates of the position coordinates of directly degree of the will speed up sensor among second embodiment on display screen as the function items of choosing.All the other realize that principle is identical with second embodiment.
Particularly, adopt the felt pen of present embodiment can realize touch function in the following way:
Fig. 8 is the schematic flow sheet of the method for third embodiment of the invention, comprising:
Step 81-83: corresponding identical with step 31-33.
Step 84: when felt pen is chosen function items, the position coordinates of processor calculation pressure sensor on display screen.
Wherein, the position coordinates of pressure transducer on display screen is the position coordinates of the function items chosen.
For example, can comprise:
According to described acceleration, measure beginning from described startup and calculate the position coordinates of described acceleration transducer on described display screen in real time;
Described when choosing information what receive the output of described pressure transducer, according to described angle of inclination, the described acceleration transducer position coordinates on described display screen and the distance of described pressure transducer and described acceleration transducer, obtain the position coordinates of the described function items of choosing, and obtain the positional information of the described function items of choosing according to the size of the position coordinates of the described function items of choosing and described display screen.
Particularly, suppose that this position coordinates is respectively X ' and Y '.This X ' and Y ' can be by position coordinates X and the Y of acceleration transducer on display screen, the tilt angle alpha of felt pen and vertical direction, distance D between acceleration transducer and the pressure transducer, calculate, specific as follows: Fig. 9 is the alliance synoptic diagram of third embodiment of the invention, referring to Fig. 9, display screen 92 is β with the angle of surface level, felt pen 91 and be α perpendicular to the angle between the vertical line of surface level, felt pen 91 and felt pen are γ at the angle between the vertical projection on the display screen, and pressure transducer 911 and acceleration transducer 912 are D along the distance of felt pen direction.Wherein, α can adopt gyroscope 913 to measure, and D is the parameter that processor can be known in advance.
According to above-mentioned corresponding relation, can obtain γ=90 °-alpha+beta
Wherein, B is pressure transducer and the distance of acceleration transducer between the vertical projection on the display screen.
Afterwards, according to the angle of gyroscope in X, Y direction, and above-mentioned B, can obtain the position coordinates of pressure transducer on display screen:
X '=X-B * cos θ
1Y '=Y-B * cos θ
2Wherein, X and Y are the position coordinates of acceleration transducer on display screen, can adopt the method for second embodiment to calculate; X ' and Y ' are the position coordinates of pressure transducer on display screen, the position coordinates of the function items of promptly choosing; θ
1, θ
2Be respectively the angle of the direction of B and X, Y-axis, can obtain by the three-dimensional perspective of gyroscope survey.
Further, need at first obtain the angle β of display screen and surface level this moment, and this angle can measure in the following way:
Mode one, display screen self is equipped with gyroscope, measures current angle of inclination in real time, sends the angle of inclination data to felt pen by communication interface again.
Mode two utilizes felt pen to measure.Be specially:
Figure 10 adopts felt pen to measure the synoptic diagram at display screen pitch angle in the third embodiment of the invention, referring to Figure 10, with felt pen 101 parallel being placed on the display screen 102, afterwards, the gyroscope of felt pen 101 can measure and perpendicular to the angle theta between the vertical line of surface level, afterwards, calculate β according to formula β=90 °-θ.
Step 85: when felt pen was chosen function items, processor calculated the positional information of the function items of choosing.Wherein, positional information can be X '/L and Y '/W, and X ' and Y ' also are the position coordinates of pressure transducer on display screen for the position coordinates of the function items chosen; L and W are the size of display screen.The measurement of L, W can be specifically referring to second embodiment.
Step 86-87: corresponding identical with step 35-36.
Present embodiment can be applied under the system's scene shown in Fig. 5 or 6 equally.
Present embodiment is by measuring the angle of inclination, can obtain felt pen and display screen when non-perpendicular, the positional information of the function items of choosing, and then startup corresponding function.Realization need not special felt pen and realizes touch function, reduces cost.
Be understandable that, realize above-mentioned functions in order to support felt pen, the main frame of the embodiment of the invention needs corresponding support software, and this support software can be mapped to the positional information of the pressure transducer in the embodiment of the invention in the user interface control of operating system, realizes touch function.By the felt pen and the corresponding support software of main frame of the embodiment of the invention, can support a large amount of display screens that does not possess touch function to realize touch function; Further, can realize the handwriting functions input of non-touch-screen by the felt pen of the embodiment of the invention.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of programmed instruction, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a felt pen is characterized in that, comprising:
Acceleration transducer, the acceleration when being used to measure described felt pen and moving;
Pressure transducer is used for the touch sensitive pen and chooses function items on the display screen, and information is chosen in output;
Processor is used to receive described when choosing information, according to the acceleration that described acceleration transducer is measured, calculates the positional information of the function items of choosing, and described positional information is sent to main frame, so that main frame starts corresponding function according to described positional information.
2. felt pen according to claim 1, it is characterized in that, described felt pen also comprises modifier key, and described modifier key is used for starting to be measured, so that described processor begins to calculate in real time the position coordinates of described acceleration transducer on display screen after starting measurement.
3. felt pen according to claim 2 is characterized in that, described felt pen is being chosen function items, during vertical described display screen,
Described processor comprises: first processing unit, be used for acceleration according to described acceleration transducer measurement, start measurement from described modifier key, calculate the position coordinates of described acceleration transducer on described display screen in real time, described when choosing information what receive the output of described pressure transducer, position coordinates on described display screen is as the position coordinates of the function items of choosing with described acceleration transducer or pressure transducer, and obtains the positional information of the described function items of choosing according to the size of the position coordinates of the described function items of choosing and described display screen.
4. felt pen according to claim 2 is characterized in that described felt pen is when choosing function items, during non-perpendicular described display screen, described felt pen also comprises: gyroscope is used for measuring when choosing function items the angle of inclination of described felt pen and vertical direction;
Described processor comprises:
First processing unit is used for the acceleration according to described acceleration transducer measurement, starts from described modifier key and measures, and calculates the position coordinates of described acceleration transducer on described display screen in real time;
Second processing unit is used to receive described when choosing information, calculates the positional information of the function items of choosing.
5. according to each described felt pen of claim 1-4, it is characterized in that, also comprise:
Communication interface connects described processor and main frame, describedly is connected to wired connection or wireless connections.
6. a method that realizes touch function is characterized in that, comprising:
Acceleration when the measurement felt pen moves;
When being elected to the function items on the middle display screen, information is chosen in output;
According to the acceleration of measuring, calculate the positional information of the function items of choosing;
Described positional information is sent to main frame, so that the function of the described function items correspondence of choosing of described host-initiated.
7. method according to claim 6 is characterized in that, also comprises: start and measure.
8. method according to claim 7 is characterized in that described acceleration is measured by acceleration transducer, when described felt pen is being chosen function items, and during vertical described display screen,
Described according to the acceleration of measuring, calculate the positional information of the function items of choosing, comprising:
According to described acceleration, measure beginning from described startup and calculate the position coordinates of described acceleration transducer on described display screen in real time, described when choosing information what receive the output of described pressure transducer, with the position coordinates of the position coordinates of described acceleration transducer on described display screen, and obtain the positional information of the described function items of choosing according to the size of the position coordinates of the described function items of choosing and described display screen as the function items of choosing.
9. method according to claim 7, it is characterized in that, described acceleration is measured by acceleration transducer, the described information of choosing is generated by pressure transducer, when described felt pen is being chosen function items, during non-perpendicular described display screen, described method also comprises: the angle of inclination of measuring described felt pen and vertical direction when choosing function items;
Described according to the acceleration of measuring, calculate the positional information of the function items of choosing, comprising:
According to described acceleration, measure beginning from described startup and calculate the position coordinates of described acceleration transducer on described display screen in real time;
Described when choosing information what receive the output of described pressure transducer, according to described angle of inclination, the described acceleration transducer position coordinates on described display screen and the distance of described pressure transducer and described acceleration transducer, obtain the position coordinates of the described function items of choosing, and obtain the positional information of the described function items of choosing according to the size of the position coordinates of the described function items of choosing and described display screen.
10. according to each described method of claim 6-9, it is characterized in that, also comprise:
Start and finish to measure by modifier key, so that processor obtains the real time position coordinate of described felt pen.
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Application publication date: 20100818 |