CN101169691A - Electromagnetic pen using signal amplitude for controlling drag function - Google Patents
Electromagnetic pen using signal amplitude for controlling drag function Download PDFInfo
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- CN101169691A CN101169691A CNA2006101428178A CN200610142817A CN101169691A CN 101169691 A CN101169691 A CN 101169691A CN A2006101428178 A CNA2006101428178 A CN A2006101428178A CN 200610142817 A CN200610142817 A CN 200610142817A CN 101169691 A CN101169691 A CN 101169691A
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Abstract
The invention discloses an electromagnetic induction pen controlling dragging function with signal oscillation amplitudes. The circuit of the electromagnetic induction pen comprises a direct-current voltage source, which outputs high and low voltage direct-current signals; a pen nib switch, which receives a pen nib pressure that decides whether the pen nib switch turns to the high voltage direct-current signal or the low voltage direct-current signal of the direct-current voltage source; and a programmable LC oscillation circuit, which is connected to the pen nib switch and the pen nib pressure that determine an output electromagnetic wave. With only an exceedingly slight shift of the pen nib, the pen nib switch can be turned to the high voltage direct-current signal and trigger the electromagnetic induction pen to give ink for writing conveniently. The ink effluence of the electromagnetic induction pen is controlled by oscillation amplitude changes of the output electromagnetic waves. The invention can effectively solve the problem that a user needs to apply force when writing and can better the touch feeling in writing at the same time.
Description
Technical field
The invention relates to a kind of electromagnetic pen with signal amplitude for controlling drag function.
Background technology
Traditional electromagnetic pen, it uses one programmable (Programmable) LC oscillatory circuit usually in electromagnetic pen, when nib is subjected to pressure at right angle, its programmable LC oscillatory circuit produces the signal of different frequency, digiboard is according to the variation of this frequency, and the lines of generation different thicknesses.
Fig. 1 is a block schematic diagram, and the pressure that the programmable LC oscillatory circuit of traditional electromagnetic pen is sent here according to nib is described, produces the electromagnetic wave of frequency change.But because in the capacitor and inductor manufacturing of programmable LC oscillatory circuit tolerance is arranged, frequency is not an entirely accurate, so the threshold frequency of electromagnetic pen water outlet can not be designed to too close marginal frequency, in order to avoid cause the misoperation of improper water outlet.
The design of this traditional electromagnetic pen causes nib must apply to a certain degree strength, just can reach the purpose of writing, but thus, when the user need gently write but not drawing etc. need to a certain degree under the pressure status, nib must apply to a certain degree pressure in vertical direction, and writing process is had some setbacks.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, a kind of electromagnetic pen that can write by little pressure is proposed, allow the user gently write and get final product water outlet, improve the sense of touch of writing.
The electromagnetic pen that the present invention can overcome aforementioned conventional need vertically apply to a certain degree strength could be write problem on digiboard shortcoming.The present invention is a kind of electromagnetic pen with amplitude control drag function, and it only needs indivisible nib displacement, in other words, only needs the minimum application of force to get final product the trigger number letter stencil, promotes the sense of touch when writing.
For achieving the above object, the invention provides a kind of electromagnetic pen with signal amplitude for controlling drag function, this electromagnetic pen comprises: a direct current (DC) voltage source, an exportable high-voltage direct-current signal and a low-voltage direct current signal; One tip switch (pen tip switch), after it received a pen point pressure, this pen point pressure determined this tip switch to switch to this high-voltage direct-current signal or this low-voltage direct current signal of this direct voltage source; And an oscillatory circuit, it is connected in this tip switch and this pen point pressure, and this tip switch and this pen point pressure determine an output electromagnetic wave.
This tip switch is by the high or low voltage direct current signal of pen point pressure with the selective reception direct voltage source, and promptly the amplitude variations of this electromagnetic pen output electromagnetic wave signal comprises customizing messages, in order to whether to control this electromagnetic pen water outlet.The electromagnetic wave of this electromagnetic pen output comprises amplitude and frequency signal, and wherein amplitude signal has only high and low two kinds of amplitudes.On behalf of pen point pressure, the electromagnetic wave of high-amplitude signal reach the water outlet critical value, and can write on digiboard, draw; On behalf of pen point pressure, the electromagnetic wave of low-amplitude signal do not reach the water outlet critical value, can't write.And when pen point pressure reach water outlet critical after, nib continues the application of force then can change the electromagnetic frequency of output, then on the digiboard according to the variation of wave frequency to show the person's handwriting of different thicknesses.
Aforesaid electromagnetic pen, wherein: when this pen point pressure reaches a water outlet when critical, this tip switch switches to this high-voltage direct-current signal of this direct voltage source.
Aforesaid electromagnetic pen, wherein: when this pen point pressure does not reach a water outlet when critical, this tip switch switches to this low-voltage direct current signal of this direct voltage source.
Aforesaid electromagnetic pen, wherein: this output electromagnetic wave is sent to a receiving trap, and this output electromagnetic wave also comprises the signal of an amplitude and a frequency.
Aforesaid electromagnetic pen, wherein: it is critical that electromagnetic this amplitude signal of this output makes this receiving trap identification whether reach a water outlet.
Aforesaid electromagnetic pen, wherein: when this tip switch switched to this high-voltage direct-current signal of this direct voltage source, then to make this receiving trap reach this water outlet critical for this output electromagnetic wave of this electromagnetic pen.
Aforesaid electromagnetic pen, wherein: when this tip switch switched to this low-voltage direct current signal of this direct voltage source, then to make this receiving trap not reach this water outlet critical for this output electromagnetic wave of this electromagnetic pen.
Aforesaid electromagnetic pen, wherein: this tip switch can be pressure-sensitive switch, spring loaded switch, conductive rubber formula switch or diaphragm type switch.
Aforesaid electromagnetic pen, wherein: this oscillatory circuit is a programmable LC oscillatory circuit.
The present invention can effectively solve the problem that need exert oneself when the user writes, and can improve the sense of touch when writing simultaneously.
Description of drawings
Fig. 1 is a synoptic diagram, a kind of traditional electromagnetic pen is described, the electromagnetic wave of stressed generation frequency change.
Fig. 2 is a synoptic diagram, and the electromagnetic pen circuit with amplitude control drag function of the present invention is described.
Fig. 3 is a work example, and the electromagnetic wave form varies of electromagnetic pen of the present invention is described.
Fig. 4 is a work example of the present invention, illustrates that electromagnetic pen of the present invention exports the pressure rank of electromagnetic frequency change correspondence.
Wherein, description of reference numerals is as follows:
201 direct voltage source 201a high-voltage direct-current signals
201b low-voltage direct current signal 203 tip switch
205 programmable LC oscillatory circuit 207 electromagnetic waves
209 pen point pressure
The electromagnetic wave signal of electromagnetic wave signal 303 high amplitudes of 301 short arcs
305 high amplitudes, high-frequency electromagnetic wave 307 high amplitudes, low-frequency electromagnetic wave
309 water outlets are critical
Embodiment
Fig. 2 is a circuit diagram of controlling the electromagnetic pen of drag function with amplitude of the present invention.With reference to figure 2, the circuit 200 of electromagnetic pen of the present invention comprises a direct current voltage source 201, and it exports a high-voltage direct-current signal 201a and a low-voltage direct current signal 201b, a tip switch 203 and a programmable LC oscillatory circuit 205.Wherein tip switch 203 receives a pen point pressure 209, and these pen point pressure 209 control tip switch 203 receive the high-voltage direct-current signal 201a or the low-voltage direct current signal 201b of direct voltage source 201 with decision.
The tip switch 203 of electromagnetic pen of the present invention can be pressure-sensitive switch, spring loaded switch, conductive rubber formula switch or diaphragm type switch.
In the electromagnetic wave signal 207 of circuit 200 outputs of electromagnetic pen of the present invention, its amplitude signal that comprises is to be realized by the direct current signal that tip switch 203 receives direct voltage source 201, and the electromagnetic wave signal 207 of this circuit 200 outputs only comprises the signal of high and low two kinds of amplitudes, the Push And Release of this that is corresponding electromagnetic pen water outlet.
In sum, when the nib of electromagnetic pen of the present invention spirals in a receiving trap (as digiboard) top, in its induction height, but do not touch receiving trap, pen point pressure 209 does not reach a water outlet when critical, then tip switch 203 switches to low-voltage direct current signal 201b, and this signal is sent to programmable LC oscillatory circuit 205, and promptly this electromagnetic pen is exported the electromagnetic wave signal 207 of a short arc.And when the nib of electromagnetic pen touches in this receiving trap, after pen point pressure 209 reaches the critical stroke of water outlet, tip switch 203 receives high-voltage direct-current signal 201a, and this signal is sent to programmable LC oscillatory circuit 205, then electromagnetic pen is exported the electromagnetic wave signal 207 of a high amplitude to receiving trap.
When the pen point pressure 209 of electromagnetic pen reach water outlet critical after, pen point pressure 209 continues to strengthen, and then can influence programmable LC oscillatory circuit 205, and the electromagnetic wave signal 207 of exporting a high amplitude, different frequency is to receiving trap.And receiving trap also can be divided into the electromagnetic wave signal that receives different pressure rank (as 512 rank), and also the pen point pressure 209 when electromagnetic pen 200 is big more, then sends high amplitude, low-frequency electromagnetic wave, and corresponding pressure rank are high more.
Fig. 3 is a work example, and the electromagnetic wave form varies figure as the electromagnetic pen output of Fig. 2 is described.With reference to figure 3, when this electromagnetic pen spirals above a digiboard and does not touch digiboard, pen point pressure 209 does not reach the water outlet that can write critical 309, tip switch 203 receives a low-voltage direct current signal 201b, then the electromagnetic wave signal of electromagnetic pen output is the electromagnetic wave signal of a short arc, shown in 301.The design of critical 309 values of pen point pressure 209 water outlets is to produce (promptly avoid electromagnetic pen not have under the situation of the application of force, digiboard is judged by accident and the misoperation of water outlet) for the phenomenon of leaking of avoiding electromagnetic pen.
When the nib of electromagnetic pen touches in digiboard, and after pen point pressure 209 reaches critical 309 values of water outlet, tip switch 203 switches to a high-voltage direct-current signal 201a, then the electromagnetic wave signal of electromagnetic pen 200 outputs is the electromagnetic wave signal of a high amplitude, shown in 303, that is the user gently writes on digiboard and gets final product water outlet.If the user continues after nib is exerted pressure the stroke 303a that reaches certain, the electromagnetic wave 305,307 that output high amplitude, different frequency change is to digiboard, as use gravity picture (corresponding to electromagnetic wave 307) thicker than the lines that draw (corresponding to electromagnetic wave 305) shows on digiboard at the lines as shown on the digiboard, so on digiboard, can show the lines and the variation of different thicknesses.
In sum, to reach water outlet critical 309 when the pen point pressure 209 of electromagnetic pen, and electromagnetic wave signal is changed into high amplitude by short arc, and this electromagnetic pen can be write on digiboard, draw.And along with the application of force of pen point pressure 209 changes, also and then change and export electromagnetic frequency signal, it also can be converted into the pressure rank of corresponding order on digiboard.
Fig. 4 exports a work example on the pressure rank of electromagnetic frequency change correspondence for the electromagnetic pen circuit of Fig. 2.The pairing pressure of electromagnetic frequency change rank with this electromagnetic pen output in this example are made as 512 rank.Wherein critical 309 values of the water outlet of this electromagnetic pen are 50 corresponding to pressure rank value.Can be in order to write when pressure rank value between 50～100 expression electromagnetic pens, the lines of its demonstration do not have the branch of thickness.Value surpasses 100 when the pressure rank, represents that this electromagnetic pen can be used for drawing, and the lines of its demonstration have the branch of thickness.
When nib touches in digiboard, after its pen point pressure 209 reaches critical 309 values of water outlet, after tip switch 203 switches to a high-voltage direct-current signal 201a, and the electromagnetic wave signal 303 of exporting a high amplitude is to digiboard, its corresponding pressure rank value is then between 50～100, and this electromagnetic pen 200 can be write on digiboard.After reaching critical 309 values of water outlet, pen point pressure 209 continues to exert pressure, the pressure rank value of the frequency change correspondence of its output electromagnetic wave 207 is between 100～511, the frequency of promptly exporting electromagnetic wave 207 is low more, and corresponding pressure rank value is high more, and the vestige that shows on the digiboard is wide more.
Be without loss of generality, the setting of the water outlet critical value of tip switch can be adjusted at the design of different electromagnetic pens, is mainly to make writing of user convenient and comfortable, promptly only needs indivisible nib displacement can reach the water outlet critical value and triggers and write.And being connected in the programmable LC oscillatory circuit of tip switch, its major function is in order to the sensing pen point pressure, to send the electromagnetic wave that different frequency changes.
The above only is a preferred possible embodiments of the present invention; be not so limit claim of the present invention; without departing from the spirit and scope of the present invention, when can doing a little change and modification, so protection scope of the present invention is as the criterion when looking the scope that accompanying Claim defines.
Claims (9)
1. electromagnetic pen with signal amplitude for controlling drag function, this electromagnetic pen comprises:
One direct current voltage source, an exportable high-voltage direct-current signal and a low-voltage direct current signal;
One tip switch, after it received a pen point pressure, this pen point pressure determined this tip switch to switch to this high-voltage direct-current signal or this low-voltage direct current signal of this direct voltage source; And
One oscillatory circuit, it is connected in this tip switch and this pen point pressure, and this tip switch and this pen point pressure determine an output electromagnetic wave.
2. electromagnetic pen as claimed in claim 1, wherein: when this pen point pressure reaches a water outlet when critical, this tip switch switches to this high-voltage direct-current signal of this direct voltage source.
3. electromagnetic pen as claimed in claim 1, wherein: when this pen point pressure does not reach a water outlet when critical, this tip switch switches to this low-voltage direct current signal of this direct voltage source.
4. electromagnetic pen as claimed in claim 1, wherein: this output electromagnetic wave is sent to a receiving trap, and this output electromagnetic wave also comprises the signal of an amplitude and a frequency.
5. electromagnetic pen as claimed in claim 4, wherein: it is critical that electromagnetic this amplitude signal of this output makes this receiving trap identification whether reach a water outlet.
6. electromagnetic pen as claimed in claim 5, wherein: when this tip switch switched to this high-voltage direct-current signal of this direct voltage source, then to make this receiving trap reach this water outlet critical for this output electromagnetic wave of this electromagnetic pen.
7. electromagnetic pen as claimed in claim 5, wherein: when this tip switch switched to this low-voltage direct current signal of this direct voltage source, then to make this receiving trap not reach this water outlet critical for this output electromagnetic wave of this electromagnetic pen.
8. electromagnetic pen as claimed in claim 1, wherein: this tip switch can be pressure-sensitive switch, spring loaded switch, conductive rubber formula switch or diaphragm type switch.
9. electromagnetic pen as claimed in claim 1, wherein: this oscillatory circuit is a programmable LC oscillatory circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101428178A CN100543660C (en) | 2006-10-26 | 2006-10-26 | Electromagnetic pen with signal amplitude for controlling drag function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101428178A CN100543660C (en) | 2006-10-26 | 2006-10-26 | Electromagnetic pen with signal amplitude for controlling drag function |
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| Publication Number | Publication Date |
|---|---|
| CN101169691A true CN101169691A (en) | 2008-04-30 |
| CN100543660C CN100543660C (en) | 2009-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101428178A Expired - Fee Related CN100543660C (en) | 2006-10-26 | 2006-10-26 | Electromagnetic pen with signal amplitude for controlling drag function |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102591486A (en) * | 2011-01-14 | 2012-07-18 | 元太科技工业股份有限公司 | Active electromagnetic pen |
| CN103576914A (en) * | 2012-07-18 | 2014-02-12 | 宏达国际电子股份有限公司 | Systems and related methods involving stylus tactile feel |
| CN103684254A (en) * | 2012-09-05 | 2014-03-26 | 深圳市经纬科技有限公司 | Temperature frequency difference compensation method, system and terminal for electromagnetic pen |
| CN108287640A (en) * | 2013-11-08 | 2018-07-17 | 禾瑞亚科技股份有限公司 | Sender unit and method of signalling |
| CN109976557A (en) * | 2017-12-27 | 2019-07-05 | 田雪松 | A kind of time writer |
| CN111913599A (en) * | 2020-08-04 | 2020-11-10 | 深圳市千分一智能技术有限公司 | Control method for improving ink discharging precision of active pen and electronic equipment |
| CN112486340A (en) * | 2020-11-27 | 2021-03-12 | 维沃移动通信有限公司 | Touch pen and coding signal control method |
-
2006
- 2006-10-26 CN CNB2006101428178A patent/CN100543660C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102591486A (en) * | 2011-01-14 | 2012-07-18 | 元太科技工业股份有限公司 | Active electromagnetic pen |
| US8928634B2 (en) | 2011-01-14 | 2015-01-06 | E Ink Holdings Inc. | Active electromagnetic pen |
| CN102591486B (en) * | 2011-01-14 | 2015-11-25 | 元太科技工业股份有限公司 | active electromagnetic pen |
| CN103576914A (en) * | 2012-07-18 | 2014-02-12 | 宏达国际电子股份有限公司 | Systems and related methods involving stylus tactile feel |
| CN103576914B (en) * | 2012-07-18 | 2017-03-01 | 宏达国际电子股份有限公司 | In order to provide the System and method for of pointer sense of touch |
| CN103684254A (en) * | 2012-09-05 | 2014-03-26 | 深圳市经纬科技有限公司 | Temperature frequency difference compensation method, system and terminal for electromagnetic pen |
| CN108287640A (en) * | 2013-11-08 | 2018-07-17 | 禾瑞亚科技股份有限公司 | Sender unit and method of signalling |
| CN108287640B (en) * | 2013-11-08 | 2020-07-07 | 禾瑞亚科技股份有限公司 | Transmitter and transmitting method |
| CN109976557A (en) * | 2017-12-27 | 2019-07-05 | 田雪松 | A kind of time writer |
| CN111913599A (en) * | 2020-08-04 | 2020-11-10 | 深圳市千分一智能技术有限公司 | Control method for improving ink discharging precision of active pen and electronic equipment |
| CN112486340A (en) * | 2020-11-27 | 2021-03-12 | 维沃移动通信有限公司 | Touch pen and coding signal control method |
| WO2022111414A1 (en) * | 2020-11-27 | 2022-06-02 | 维沃移动通信有限公司 | Stylus and marking signal control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100543660C (en) | 2009-09-23 |
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