CN105955526A - Touch device - Google Patents
Touch device Download PDFInfo
- Publication number
- CN105955526A CN105955526A CN201610257583.5A CN201610257583A CN105955526A CN 105955526 A CN105955526 A CN 105955526A CN 201610257583 A CN201610257583 A CN 201610257583A CN 105955526 A CN105955526 A CN 105955526A
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- Prior art keywords
- touch screen
- amplitude
- signal
- capacitance pen
- nib
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention provides a touch device, comprising a capacitance pen and a touch screen. The capacitance pen comprises a penholder, a nib, and a sending circuit and a sending control unit held in the penholder. The sending control unit controls the sending circuit to send signals to the touch screen through the nib. When specific conditions are satisfied, the sending control unit adjusts the sending circuit to send signal amplitude to the touch screen.
Description
Technical field
The present invention relates to contactor control device, particularly relate to a kind of can reduce capacitance pen power consumption touch
Control device.
Background technology
Along with the development of information technology, the electronic equipment of such as portable mobile apparatus and people
Life the most closely related.This portable mobile apparatus can receive the input of user,
And perform the desired function of user according to this input.As the input dress receiving user's input
Putting, contactor control device is widely used with little, lightweight, the easily operated advantage of its volume.
Contactor control device is broadly divided into two kinds, resistance type touch control device and capacitive touch device.
Resistance type touch control device low cost, easily fabricated, but can only support singly to refer to operation.Electric capacity
The operability of formula contactor control device is relatively strong, support to refer to function more, thus becomes current touch-control dress
The first-selection put.
Capacitance touch-control device includes capacitive touch screen, and capacitive touch screen can be by being distributed in it
On orthogonal electric capacity figure carry out perception finger (or stylus) and touch the capacitance variations that causes, from
And measure touch location and touch intensity.Capacitive touch screen can be in capacitance touch-control device
Transparent panel above, it is also possible to be opaque human-machine interaction board.
Owing to bigger contact area can be needed by the electric conductor of touch screen perception, so can make
Becoming the problem that location is inaccurate, the support to pen simultaneously is not the most ideal.Therefore, people
Expect that capacitance touch-control device can support writing of pen, at least include very thin nib, unsettled sense
Should, precise positioning, the pressure sensitivity function such as accurately.
Actively capacitance pen solves the problems referred to above, it be a kind of with capacitive touch screen with the use of
Capacitance pen.Actively capacitance pen can send the high-voltage pulse signal Tong Bu with capacitive touch screen,
Enhancing capacitive sensing, such that it is able to reduce contact area, the thinnest nib clearly enhances use
Family is experienced.
Fig. 1 shows the schematic diagram of the operation principle of contactor control device.
As it is shown in figure 1, contactor control device includes: panel, it is configured with mutually orthogonal use
Parallel capacitance pole plate in receiving and transmitting signal；Sending capacitor plate, it is arranged on the panel,
For being sent out probing wave；Pen 11, its synchronization sent by nib receiving panel and life
Make information, then send signal wave by nib to described panel；Receiving capacitor plate, it is arranged
On the panel, for receiving probing wave and the signal of described pen of described transmission capacitor plate
Ripple；Analogy signal processing unit, it sends according to the capacitor plate controlling processing unit selection
Respective waveforms, or pretreatment is from receiving capacitor plate signal；Control processing unit 14,
Pretreated reception signal is digital signal by AD conversion by it, and is obtained by process
Touch location, obtains position and the information of pen passback of pen in the case of pen is capacitance pen.
Visible, it is by with tactile mostly that capacitance pen and capacitance touch control board carry out the mutual mode of information
Capacitance Coupled between control plate realizes, i.e. by metal structure and the capacitance touch control board of nib position
Interact.
Between the nib of capacitance pen and touch screen to couple electric capacity the least, probably arrive at 100fF
Between 1.5pF, and this electric capacity is along with the distance between nib and the touch screen of capacitance pen
Increasing and reduce, therefore, the capacitive reactance of the communication link between capacitance pen and touch screen is very big,
Touch screen to receive the written signal sent and be necessary for improving the nib transmission signal of capacitance pen
Amplitude.The amplitude sending signal is generally 25V, and amplitude improves will necessarily increase capacitance pen
Power consumption, this mainly causes by two aspects: first, rating formula P=U2/ R, U increase
Power P is caused to increase.Second, capacitance pen is powered by battery, and cell voltage is generally 1.2V
To 3.7V, and boosting to 25V, necessarily there is transition loss centre.
Therefore, there is the problem that power consumption is higher in the capacitance pen of prior art.
Summary of the invention
The invention provides a kind of contactor control device, including capacitance pen and touch screen.This electric capacity
Pen can according to circumstances reduce the amplitude sending signal, thus is ensureing that capacitance pen normally works
On the premise of reduce the power consumption of capacitance pen.
The contactor control device of the present invention includes capacitance pen and touch screen, it is characterised in that described
Capacitance pen includes: penholder；Nib；The transtation mission circuit being contained in described penholder and transmission control
Unit processed, described transmission control unit controls described transtation mission circuit via described nib to described
Touch screen sends signal；Wherein, when meeting rated condition, described transmission control unit is adjusted
The amplitude of the signal that whole described transtation mission circuit sends to described touch screen.
Preferably, described capacitance pen also includes: contact detector unit, it is positioned at described nib
Whether place, detect and contact between described written and described touch screen, and described rated condition
It is that described contact detector unit senses contacting between described written and described touch screen, its
In, when contacting between described written and described touch screen, described transmission control unit controls institute
State transtation mission circuit and send signal with relatively low amplitude to described touch screen, when described nib and institute
State described transmission control unit when being not in contact with between touch screen and control described transtation mission circuit with relatively
High amplitude sends signal to described touch screen.
Preferably, described contact detector unit is pressure transducer.
Preferably, described capacitance pen also includes: the reception circuit being contained in described penholder,
It receives signal via described nib from described touch screen, and, described touch screen includes connecing
Receiving unit and transmitting element, wherein, the reception unit of described touch screen receives described nib and sends out
The signal sent, the transmitting element of described touch screen sends signal, described electricity to described capacitance pen
The described reception circuit holding pen receives, via described nib, the signal that described touch screen sends, its
In, described rated condition is that the reception circuit of described capacitance pen receives from described touch screen
Amplitude adjusts order.
Preferably, the width of the signal received from described capacitance pen is judged when described touch screen
When degree is higher than amplitude peak threshold value, described touch screen is sent out to the reception unit of described capacitance pen
Described amplitude is sent to adjust order, and, adjust order, described electricity in response to described amplitude
The described transmission control unit holding pen reduces described transtation mission circuit to described touch screen transmission letter
Number amplitude, and, the signal judging to receive from described nib when described touch screen
When amplitude is less than minimum radius threshold value, described touch screen is to the reception circuit of described capacitance pen
Send described amplitude and adjust order, and, adjust order in response to described amplitude, described
The described transmission control unit of capacitance pen raises described transtation mission circuit and sends to described touch screen
The amplitude of signal.
Preferably, the signal warp that described amplitude peak threshold value sends corresponding to described capacitance pen
Saturation value after the control circuit amplification of described touch screen.
Preferably, described minimum radius threshold value is to maintain described capacitance pen and described touch screen
Communicate required minimum signal amplitude.
Preferably, described touch screen also includes: distance detector unit, it is positioned at described touch-control
In the master board of screen, detect the distance change between described written and described touch screen, and
And, between described amplitude peak threshold value and described minimum radius threshold value, it is provided with at least one
Intermediate threshold, wherein, when described distance detector unit detects described written and described touch-control
When distance between screen reduces, described touch screen judges the signal received from described capacitance pen
Amplitude whether exceeded at least one intermediate threshold described, if it is, often
More than an intermediate threshold, send order to the described transmission control unit of described capacitance pen,
Reduce the amplitude of the signal that described transtation mission circuit sends to described touch screen, and, when described
Distance detector unit detects when the distance between described written and described touch screen increases, institute
State touch screen judge the amplitude of the signal received from described capacitance pen the lowest crossed described to
In a few intermediate threshold one, if it is, one intermediate threshold of the lowest mistake, to institute
The described transmission control unit stating capacitance pen sends order, raises described transtation mission circuit to described
The amplitude of the signal that touch screen sends.
Preferably, described distance detector unit senses between described written and described touch screen
The size of coupling electric capacity, thus detects the distance between described written and described touch screen.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the operation principle of contactor control device；
Fig. 2 shows the schematic diagram of the contactor control device of embodiment of the present invention；
Fig. 3 shows the structured flowchart of the capacitance pen of embodiment of the present invention；
Fig. 4 shows the schematic diagram of the one-way communication between active capacitance pen and touch screen；
Fig. 5 shows the schematic diagram of the two-way communication between active capacitance pen and touch screen；
Fig. 6 A and 6B shows that the contactor control device of the present invention adjusts and sends the first of signal amplitude
The schematic diagram of embodiment；
Fig. 7 shows that the contactor control device of the present invention adjusts the second embodiment party sending signal amplitude
The schematic diagram of formula；
Fig. 8 A and 8B shows that the contactor control device of the present invention adjusts and sends the second of signal amplitude
The further schematic diagram of embodiment；
Fig. 9 shows the further structured flowchart of the capacitance pen of embodiment of the present invention.
Detailed description of the invention
For making those skilled in the art be more fully understood that technical scheme, knot below
The capacitance pen that closing the drawings and specific embodiments provides the present invention is described in detail.?
In these accompanying drawings, for element identically or comparably, mark identical label.With
Being only down the preferred forms of the capacitance pen of the present invention, the present invention is not limited in following knot
Structure.
With reference to Fig. 2, the contactor control device of the present invention includes capacitance pen 10 and touch screen 20.Under
Capacitance pen 10 is mainly described in detail by face.
Fig. 3 shows the structured flowchart of the capacitance pen of embodiment of the present invention.
As it is shown on figure 3, the capacitance pen 10 of the present invention includes: penholder 100；Nib 102；
The transtation mission circuit 110 being contained in penholder 100 and transmission control unit 104.Send and control
Unit 104 controls transtation mission circuit 110 via nib 102 to touch screen 20 (not shown)
Send signal.Send control unit 104 to be arranged to, when a given condition is fulfilled, adjust
The amplitude of the signal that transtation mission circuit 110 sends to touch screen 20 via nib 102.
The capacitance pen 10 of the present invention is described in detail below in conjunction with Fig. 4 to Fig. 7.
Interactive mode between capacitance pen and touch screen mainly has two kinds: one-way communication and double
To communication.
Interactive mode between capacitance pen with touch screen is individual event when communicating, capacitance pen
Nib only includes nib, is used for sending signal to touch screen 20.When capacitance pen 10 is with tactile
When interactive mode between control screen 20 is two-way communication, with reference to Fig. 9, here, nib 102
Including the coils that nib 1021 is peripheral with penholder 100 contact position with being positioned at nib 102
1022.Nib 1021 and coil 1022 are respectively intended to send signal and from touch screen to touch screen 20
20 receive signal.
Fig. 4 and Fig. 5 respectively illustrates the schematic diagram of both communication modes.
As shown in Figure 4, in one-way communication, capacitance pen 10 has transtation mission circuit 110.
Transtation mission circuit 110 sends signal S1 by nib to touch screen 20.Touch screen 20 receives
The signal S1 that capacitance pen 10 sends, operates the most accordingly.At this communication mode
Under, capacitance pen 10 only sends signal to touch screen 20 and does not receives signal from touch screen 20.
As it is shown in figure 5, in two-way communication, capacitance pen 10 has transtation mission circuit 110
With reception circuit 112.Transtation mission circuit 110 sends signal S1 by nib to touch screen 20,
Touch screen 20 receives signal S1.On the other hand, touch screen 20 sends letter to capacitance pen 10
Number S2, the reception circuit 112 of capacitance pen 10 receives this signal S2 by nib.This
Under communication mode, capacitance pen 10 both sent signal to touch screen 20, connect from touch screen 20 again
The collection of letters number.
In above two communication mode, capacitance pen 10 will send signal to touch screen 20.
The capacitance pen 10 of the present invention adjusts the amplitude of transmission signal by sending control unit 104,
Thus reduce the power consumption of capacitance pen 10.
Describe in detail referring to Fig. 6 to Fig. 8 and how to adjust the amplitude sending signal.
Fig. 6 A and Fig. 6 B shows that the contactor control device of embodiment of the present invention adjusts and sends signal
The schematic diagram of the first embodiment of amplitude.
In the first embodiment, capacitance pen 10 only includes that transmitting element does not includes connecing
Receive unit, i.e. above-mentioned one-way communication.Capacitance pen 10 can include that contact detection is single
Unit 108, it is positioned at nib, and whether detection nib contacts with between touch screen 20.
When contact detector unit 108 sense be not in contact with between nib and touch screen 20 time,
Send control unit 104 and control nib with higher amplitude V1 ' send signal to touch screen 20；
When contact detector unit 108 senses and contacts between nib with touch screen 20, send control
Unit 104 processed controls nib with relatively low amplitude V2 ' send signal to touch screen 20.
Contact detector unit 108 can be arbitrarily to detect the element of contact condition.Such as,
Contact detector unit 108 can be pressure transducer.
Fig. 7 shows that the contactor control device of the present invention adjusts the second embodiment party sending signal amplitude
The schematic diagram of formula.
In the figure 7, capacitance pen 10 also includes the reception circuit 112 being contained in penholder, its
Signal is received from touch screen 20.Touch screen 20 also includes reception unit and transmitting element (not
Illustrate).The unit that receives of touch screen 20 receives the signal that nib sends, sending out of touch screen 20
Unit is sent to send signal to capacitance pen 10.
Life is adjusted when the reception circuit 112 of capacitance pen 10 receives amplitude from touch screen 20
When making, send control unit 104 and adjust transtation mission circuit 110 by nib to touch screen 20
The amplitude of the signal sent.
It is described in detail below in conjunction with Fig. 7.
The transtation mission circuit 110 of capacitance pen 10 sends, to touch screen 20, the signal that amplitude is V.
When touch screen judges that amplitude V of signal received from capacitance pen 10 is excessive, such as
During higher than predefined amplitude peak threshold value, touch screen 20 is to the reception of capacitance pen 10
Circuit 112 sends amplitude and adjusts order.After receiving the adjustment order of this amplitude, capacitance pen
The transmission control unit 104 of 10 reduces transtation mission circuit 110 and sends signal to touch screen 20
Amplitude V.
It addition, when touch screen 20 judges amplitude V of the signal received from capacitance pen 10
Too small, during the most predefined minimum radius threshold value, touch screen 20 is to capacitance pen
The reception circuit 112 of 10 sends amplitude and adjusts order.After receiving the adjustment order of this amplitude,
The transmission control unit 104 of capacitance pen 10 raises transtation mission circuit 110 to touch screen 20
Amplitude V of the number of delivering letters.
Herein, the signal that the e.g. corresponding capacitance pen 10 of amplitude peak threshold value sends is through touch-control
Saturation value after screen control circuit amplification.Minimum radius threshold value is to maintain capacitance pen 10 and touch
Control screen 20 communicates required minimum signal amplitude.
Second embodiment of the present invention is described in detail below in conjunction with Fig. 8 A and 8B.
Fig. 8 A and 8B shows that the contactor control device of the present invention adjusts and sends the second of signal amplitude
The further schematic diagram of embodiment.
In Fig. 8 A and 8B, touch screen 20 also includes distance detector unit 114, its position
On the master board (not shown) of touch screen 20, between detection nib and touch screen 20
Distance change.
As shown in Figure 8 A, capacitance pen 10 sends signal with amplitude V1 to touch screen 20.With
This simultaneously, capacitance pen 10 moves closer to touch screen 20, and such as, user prepares will be at touch-control
The process write is carried out on screen 20.In this process, touch screen 20 judgement receives
Whether signal amplitude has exceeded required signal amplitude, if it is, send to capacitance pen 10
Order, the transmission control unit 104 of capacitance pen 10 reduces transtation mission circuit 110 and sends signal
Amplitude is V2.It is achieved in the low-power consumption of capacitance pen 10.
In one embodiment of the invention, at above-mentioned amplitude peak threshold value and minimum radius threshold
At least one intermediate threshold it is provided with, when distance detector unit 114 detects nib between value
And when the distance between touch screen 20 reduces, touch screen 20 judges to receive from capacitance pen 10
The amplitude of signal whether exceeded at least one intermediate threshold described.
If it is, often more than an intermediate threshold, to the transmission control unit of capacitance pen 10
104 send order, reduce the amplitude of the signal that transtation mission circuit 110 sends to touch screen 20.
When distance detector unit 114 detects that the distance between nib and touch screen 20 increases,
Touch screen 20 judge the amplitude of the signal received from capacitance pen 10 the lowest crossed described to
In a few intermediate threshold one.
If it is, one intermediate threshold of the lowest mistake, to the transmission control unit of capacitance pen 10
104 send order, raise the amplitude of the signal that transtation mission circuit 110 sends to touch screen 20.
Specifically, such as, define between amplitude peak threshold value and minimum radius threshold value
In the middle of two intermediate threshold, i.e. the first intermediate threshold and the second intermediate threshold, and second
Threshold value is more than the first intermediate threshold.
In this case, nib and touch screen 20 are detected when distance detector unit 114
Between distance when reducing, touch screen 20 judges the signal received from capacitance pen 10
Amplitude whether exceeded the first intermediate threshold.If it is not, then touch screen 20 is not taked any
Action.If it is, send order to the transmission control unit 104 of capacitance pen 10, reduce
The amplitude of the signal that transtation mission circuit 110 sends to touch screen 20.
Subsequently, distance detector unit 114 continues the distance between detection nib and touch screen 20.
And touch screen 20 judges whether the amplitude of the signal received from capacitance pen 10 has exceeded
Two intermediate threshold.If it is not, then touch screen 20 does not take any action.If it is, to
The transmission control unit 104 of capacitance pen 10 sends order, again reduce transtation mission circuit 110 to
The amplitude of the signal that touch screen 20 sends.
On the other hand, detect between nib and touch screen 20 when distance detector unit 114
Distance when increasing, touch screen 20 judges the width of the signal received from capacitance pen 10
Spend and the lowest crossed the second intermediate threshold.If it is not, then touch screen 20 does not take any action.
If it is, send order to the transmission control unit 104 of capacitance pen 10, raise and send electricity
The amplitude of the signal that road 110 sends to touch screen 20.
Subsequently, distance detector unit 114 continues the distance between detection nib and touch screen 20.
And touch screen 20 judges that the amplitude of the signal received from capacitance pen 10 is the lowest and has crossed
One intermediate threshold.If it is not, then touch screen 20 does not take any action.If it is, to
The transmission control unit 104 of capacitance pen 10 sends order, again raise transtation mission circuit 110 to
The amplitude of the signal that touch screen 20 sends.
Above-described embodiment have employed two intermediate threshold, but the present invention is not limited to two
The situation of individual intermediate threshold.Those skilled in the art according to circumstances can use more or more
Few intermediate threshold.
It addition, in the present invention, distance detector unit 114 senses nib and touch screen 20
Between coupling electric capacity size, thus detection nib and touch screen 20 between distance.
As shown in Figure 8 A and 8 B, according to capacity coupled principle, when nib and touch screen
When distance between 20 is bigger, the coupling electric capacity C1 between them is less.And along with nib
With the reduction of the spacing of touch screen 20, coupling electric capacity therebetween becomes greatly C2.Away from
From detector unit 114 be through detection coupling electric capacity change indirectly detect nib with
The change of the distance between touch screen 20.
Utilize the contactor control device of the present invention, can be logical between guarantee capacitance pen and touch screen
The power consumption of capacitance pen is effectively reduced, it is to avoid user frequently changes electricity on the premise of letter quality
Pond or the trouble of charging, use convenient.
Principle that embodiment of above is intended to be merely illustrative of the present and the exemplary reality that uses
Execute mode, but the invention is not limited in this.For one of ordinary skilled in the art
For, without departing from the spirit and substance in the present invention, various modification can be made
And improvement.These modification and improvement are also considered as protection scope of the present invention.
Claims (9)
1. a contactor control device, including capacitance pen and touch screen, it is characterised in that institute
State capacitance pen to include: penholder；Nib；It is contained in the transtation mission circuit in described penholder and transmission
Control unit, described transmission control unit controls described transtation mission circuit via described nib to institute
State touch screen and send signal；Wherein,
When meeting rated condition, described transmission control unit adjusts described transtation mission circuit to institute
State the amplitude of the signal that touch screen sends.
2. contactor control device as claimed in claim 1, wherein, described capacitance pen also includes:
Contact detector unit, it is positioned at described nib place, detect described written and described touch screen it
Between whether contact, and
Described rated condition be described contact detector unit sense described nib with described touch
Contact between control screen, wherein, described in when contacting between described written and described touch screen
Send the control unit described transtation mission circuit of control to send to described touch screen with relatively low amplitude
Signal, described transmission control unit when being not in contact with between described written and described touch screen
Control described transtation mission circuit and send signal with higher amplitude to described touch screen.
3. contactor control device as claimed in claim 2, wherein, described contact detector unit
It it is pressure transducer.
4. contactor control device as claimed in claim 1, wherein, described capacitance pen also includes:
The reception circuit being contained in described penholder, it receives from described touch screen via described nib
Signal, and, described touch screen includes receiving unit and transmitting element, wherein, described tactile
The unit that receives of control screen receives the signal that described nib sends, the transmitting element of described touch screen
Sending signal to described capacitance pen, the described reception circuit of described capacitance pen is via described nib
Receive the signal that described touch screen sends, wherein
Described rated condition is that the reception circuit of described capacitance pen receives from described touch screen
Order is adjusted to amplitude.
5. contactor control device as claimed in claim 4, wherein, when described touch screen judges
When the amplitude of the signal that described capacitance pen receives is higher than amplitude peak threshold value, described tactile
Control screen sends described amplitude to the reception unit of described capacitance pen and adjusts order, and
Order, the described transmission control unit of described capacitance pen is adjusted in response to described amplitude
Reduce described transtation mission circuit and send the amplitude of signal to described touch screen, and
When described touch screen judges that the amplitude of signal that receives from described nib is less than
By a small margin during threshold value, described touch screen sends described width to the reception circuit of described capacitance pen
Degree adjusts order, and
Order, the described transmission control unit of described capacitance pen is adjusted in response to described amplitude
Raise described transtation mission circuit and send the amplitude of signal to described touch screen.
6. contactor control device as claimed in claim 5, wherein, described amplitude peak threshold value
The signal sent corresponding to described capacitance pen is after the control circuit of described touch screen is amplified
Saturation value.
7. contactor control device as claimed in claim 5, wherein, described minimum radius threshold value
It is to maintain described capacitance pen and described touch screen to communicate required minimum signal amplitude.
8. contactor control device as claimed in claim 5, wherein, described touch screen also includes:
Distance detector unit, it is positioned in the master board of described touch screen, detect described nib with
Distance change between described touch screen, and, described amplitude peak threshold value and described
At least one intermediate threshold it is provided with by a small margin between threshold value, wherein,
When described distance detector unit detect between described written and described touch screen away from
In time reducing, whether the amplitude of the signal that the judgement of described touch screen receives from described capacitance pen
Exceed at least one intermediate threshold described, if it is, often more than in one
Between threshold value, send order to the described transmission control unit of described capacitance pen, reduce described sending out
The amplitude of the signal that touch screen described in power transmission road direction sends, and
When described distance detector unit detect between described written and described touch screen away from
In time increasing, whether the amplitude of the signal that the judgement of described touch screen receives from described capacitance pen
Low crossed at least one intermediate threshold described, if it is, in the lowest mistake one
Between threshold value, send order to the described transmission control unit of described capacitance pen, raise described sending out
The amplitude of the signal that touch screen described in power transmission road direction sends.
9. contactor control device as claimed in claim 8, wherein, described distance detector unit
Sense the size coupling electric capacity between described written and described touch screen, thus detect institute
State the distance between written and described touch screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610257583.5A CN105955526A (en) | 2016-04-22 | 2016-04-22 | Touch device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610257583.5A CN105955526A (en) | 2016-04-22 | 2016-04-22 | Touch device |
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| CN105955526A true CN105955526A (en) | 2016-09-21 |
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| CN201610257583.5A Pending CN105955526A (en) | 2016-04-22 | 2016-04-22 | Touch device |
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Application publication date: 20160921 |