CN108008840A - Synchronization time difference launches the method and capacitance pen and touch-control input device of signal - Google Patents
Synchronization time difference launches the method and capacitance pen and touch-control input device of signal Download PDFInfo
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- CN108008840A CN108008840A CN201610955255.2A CN201610955255A CN108008840A CN 108008840 A CN108008840 A CN 108008840A CN 201610955255 A CN201610955255 A CN 201610955255A CN 108008840 A CN108008840 A CN 108008840A
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- capacitance pen
- time difference
- capacitance
- time
- synchronization means
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000005684 electric field Effects 0.000 description 15
- 230000006698 induction Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 230000005611 electricity Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
- G06F3/033—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
-
- 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
Abstract
The invention discloses the method and capacitance pen and touch-control input device of a kind of synchronization time difference transmitting signal, is specifically a kind of method of synchronization time difference transmitting signal and the capacitance pen and touch-control input device of adopting said method.Make multiple capacitance pen synchronization time difference transmitting signals using the time difference synchronization means of touch-control input device and the synchronization interface of capacitance pen.
Description
Technical field
The invention relates to launch the method for signal and the capacitance pen of adopting said method and touch-control input device, particularly
It is related to a kind of method of synchronization time difference transmitting signal and the capacitance pen and touch-control input device of adopting said method.
Background technology
The mainstream that touch-control input has been touch technology application is carried out with capacitance pen.Capacitance pen can provide user and be write
Or application is performed with user interface on contact panel.When capacitance pen is near to or in contact with contact panel, by detecing
The information such as the coordinate of capacitance pen, posture can be obtained by surveying between capacitance pen and the induction electrode of contact panel the capacitive coupling produced.
For the capacitive coupling between capacitance pen to be established and the induction electrode of contact panel to obtain the coordinate of capacitance pen, capacitance pen needs
Receive the drive signal of induction electrode and output signal to induction electrode.In addition to the coordinate of capacitance pen, the inclination of capacitance pen
Angle or pen point pressure gradient information be capacitance pen on contact panel using key message with function.
Fig. 1 is shown in the schematic diagram that capacitance pen is used on the contact panel of touch-control input device.As shown in Figure 1, capacitance pen
101 batteries 105 and transmitting high voltage electric field signal for including the circuit board 104 with capacitance pen circuit, supplying capacitance pen power supply
Emission electrode 106.Contact panel 100, which includes, has capacitive sensing electrod-array, and capacitive sensing electrod-array includes multiple sensings
Electrode, wherein induction electrode include emission electrode (Tx) and receiving electrode (Rx).The capacitive sensing electrod-array of contact panel 100
Then driven by the touch-control circuit on touch-control circuit plate 102, touch-control circuit includes touch-control IC chip.The electricity of capacitance pen 101
Capacitance pen circuit on road plate 104 can produce the high-voltage signal of specific frequency, this high-voltage signal is electric via the transmitting of capacitance pen 101
Pole 106 is exported to the capacitive sensing electrode of contact panel 100, forms electric field signal.
Touch-control on the contact panel 100 and touch-control circuit plate 102 of touch-control input device (such as tablet computer or mobile phone)
Circuit, receives the electric field signal that emission electrode 106 is launched, and public according to the strong and weak and specific coordinate algorithm of electric field signal
Formula, calculates the coordinate value of capacitance pen 101.
When using the capacitance pen of more than two, within the same period, the capacitance pen of more than two may be when overlapping
Interior transmitting signal, causes contact panel end that signal can not be correctly received, so that number, that is, capacitance of None- identified signal source
The source of the number, also None- identified signal of pen.That is, there is the uncertain time difference between more than two capacitance pens.
Fig. 2 shows time slot (Time Slot) schematic diagram of two capacitance pens overlapping period transmitting signal on contact panel.
As shown in Fig. 2, there is the uncertain time difference between the electrode signal transmitting of two capacitance pens.The electrode signal transmitting of two capacitance pens
Time slot (Time Slot) be using beacon as starting, period of beacon is the electrode emission of TB0 to TB1, during which capacitance pen
Frequency is the electric field signal of F1, the then electrode electric field signal that then tranmitting frequency is F2 during pressure gradient time slot, but two
The initial time TB0 of the beacon of capacitance pen is simultaneously differed.When partly overlapping two capacitance pen time slot periods, for example, beacon when
Section TB0 to TB1 or pressure gradient time slot period partly overlap, and contact panel will be unable to correctly identify signal source or capacitance pen
Number, the also status of the source of None- identified signal or capacitance pen.
In order to solve the problem above-mentioned, the present invention proposes the method for synchronization time difference transmitting signal and the electricity of adopting said method
Hold pen and touch-control input device.
The content of the invention
In one embodiment of the invention, propose a kind of method of synchronization time difference transmitting signal, comprise the steps of.
First in step (a), there is provided touch-control input device, the touch-control input device include contact panel and time difference synchronization means.
Then in (b), there is provided at least a two capacitance pen on the contact panel, each capacitance pen includes emission electrode and synchronous boundary
Face, and the time difference synchronization means is connected to the synchronization interface with the synchronous data content of passing time difference.Then in step (c)
In, the inner parameter of reset time difference synchronization means.Then in step (d), time difference synchronization means receives the first capacitance pen
Initial time parameter.Then in step (e), time difference synchronization means is used as benchmark using the initial time of the first capacitance pen
Value.Then in step (f), time difference synchronization means receives the time parameter of the second capacitance pen.Then in step (g), the
The time difference parameter of two capacitance pen receiving time difference synchronization means transmission.In step (h), the adjustment starting transmitting of the second capacitance pen
The time of signal, which makes it launch between the period of signal and the first capacitance pen, has the time difference.Then in step (i), judgement is
The no session number purpose upper limit for reaching capacitance pen.Finally in step (j), determine whether that other capacitance pens add running.If
The line number of capacitance pen does not reach the upper limit, and has other capacitance pens to add running, then repeat step (f)-(j), sequentially makes newly to add
The initial time parameter of the capacitance pen entered adds the time difference.
In another embodiment of the present invention, disclose a kind of capacitance pen using synchronization time difference method for transmitting signal with
Touch-control input device, comprising touch-control input device, at least two capacitance pens and computer-readable storage medium are located at the touch-control
On input unit.Touch-control input device includes contact panel and time difference synchronization means.Each capacitance pen include emission electrode with
Synchronization interface, the time difference synchronization means are connected with the synchronization interface of two capacitance pen with the poor synchronous data of passing time respectively
Hold.Computer-readable storage medium stores computer-executable instructions, to perform the method for synchronization time difference transmitting signal, this method
Comprise the steps of.First in step (a), the inner parameter of reset time difference synchronization means.Then in (b), the time difference
Synchronization means receives the initial time parameter of the first capacitance pen.Then in step (c), time difference synchronization means is with the first capacitance
The initial time of pen is as a reference value.Then in step (d), time difference synchronization means receives the time ginseng of the second capacitance pen
Number.Then in step (e), the time difference parameter of the second capacitance pen receiving time difference synchronization means transmission.Then in step (f)
In, the time of the second capacitance pen adjustment starting transmitting signal, which makes it launch between the period of signal and the first capacitance pen, has the time
Difference.Then in step (g), judge whether to reach the session number purpose upper limit of capacitance pen.In step (h), determine whether
Other capacitance pens add running.If the line number of capacitance pen does not reach the upper limit, and there are other capacitance pens to add running, then repeat to walk
Suddenly (d)-(h), the initial time parameter for the capacitance pen for sequentially making newly to add add the time difference.
Brief description of the drawings
Fig. 1 is shown in the schematic diagram that capacitance pen is used on the contact panel of touch-control input device.
Fig. 2 shows time slot (Time Slot) schematic diagram of two capacitance pens overlapping period transmitting signal on contact panel.
Fig. 3 is shown launches two capacitance pen synchronizing signals using time difference synchronization means according to one embodiment of present invention
The schematic diagram of time difference.
Fig. 4 shows time slot (Time Slot) schematic diagram of multiple capacitance pen synchronization time difference transmitting signals.
Fig. 5 shows a kind of flow chart of the method for synchronization time difference transmitting signal according to an embodiment of the invention.
【Main element symbol description】
100：Contact panel 101：Capacitance pen
104：Circuit board 105：Battery
106：Emission electrode 301：Capacitance pen
3013：Synchronization interface 3014：Circuit board
3015：Battery 3016：Emission electrode
302：Capacitance pen 3023：Synchronization interface
3024：Circuit board 3025：Battery
3026：Emission electrode 303：Time difference synchronization means
501：The inner parameter of reset time difference synchronization means
502：Time difference synchronization means receives the initial time parameter of the first capacitance pen
503：Time difference synchronization means is used as a reference value using the initial time of the first capacitance pen
504：Time difference synchronization means receives the time parameter of the second capacitance pen
505：The time difference parameter Td of second capacitance pen receiving time difference synchronization means transmission
506：The time of second capacitance pen adjustment starting transmitting signal makes between the period of transmitting signal and the first capacitance pen
Time difference with Td
507：Judge whether up to the session number purpose upper limit of capacitance pen
508：Determine whether that other capacitance pens add running
Embodiment
Some embodiments of the present invention will be described in as follows.However, in addition to described below, the present invention can also be extensively
Ground is implemented in other embodiments, and the scope of the present invention and from the restriction of embodiment, its scope of the claims being subject to afterwards.
Furthermore to provide clearer description and being more readily understood the present invention, each several part is not drawn according to its relative size in schema,
Some sizes are exaggerated compared with other scale dependents；Incoherent detail section is not also drawn completely, in the hope of schema
Succinctly.
In an embodiment of the present invention, some are on capacitance pen but for the present invention and non-key, and are this technology
Field has the feature that general technology person is known and can implement or use, and will not describe in detail here.On capacitance pen
There is the feature that general technology person is known and can implement or use with contact panel and for the art.For example, touch-control
Panel has capacitive sensing electrod-array, and capacitive sensing electrod-array includes multiple induction electrodes, and wherein induction electrode includes hair
Radio pole (Tx) and receiving electrode (Rx).When using capacitance pen on contact panel, capacitance pen electrode is close to contact panel
Induction electrode array, and with producing capacitive coupling below capacitance pen or between the induction electrode of neighbouring capacitance pen, while export letter
Number to induction electrode.Contact panel when scanning emission electrode and receiving electrode can inductance capacitance pen core output signal, produce
Inductive signal, the coordinate so as to calculating or determining capacitance pen.Charge accumulation circuitry (charge can be used in capacitive sensing electrod-array
Accumulation circuit), capacitance modulation circuit (capacitance modulation circuit) or any other
It is adapted to and there is the capacitive sensing mode that general technology person is known and can implement or use for the art.
Fig. 3 is shown made for two capacitance pen synchronizing signal launch times using time difference synchronization means according to an embodiment of the invention
The schematic diagram of difference.In this embodiment, capacitance pen 301 and 302 respectively include with capacitance pen circuit circuit board 3014 with
3024th, the synchronization interface 3013 and 3023 on circuit board 3014 and 3024, supply capacitance pen power supply battery 3015 with
3025 and launch electric field signal electrode 3016 and 3026.Touch-control input device (not shown) then has time difference synchronization means
303, time difference synchronization means 303 by capacitance pen 301 and 302 synchronization interface 3013 and 3023 respectively with capacitance pen 301 with
302 connections, time difference synchronization means 303 can be received by the synchronization interface 3013 and 3023 of capacitance pen 301 and 302 carrys out self-capacitance
The signal of pen 301 and 302, and each autoregressive parameter can be transferred to the time by capacitance pen 301 and 302 by synchronization interface 3013 and 3023
Poor synchronization means 303.Then passing time difference synchronizing signal to synchronization interface 3013 and 3023, makes electricity to time difference synchronization means 303
Hold pen 301 and 302 and launch signal in different periods respectively, to reach purpose of multiple capacitance pens in different periods transmitting signal,
And and then enable contact panel that the signal from each capacitance pen is correctly received, to reach multiple capacitance pens on contact panel
The purpose of operation at the same time.
The synchronization interface of capacitance pen 301 and 302 includes IC bus (I2C), serial peripheral interface (SPI) or tandem
Transmit the modes such as communication protocol (Uart).Power supply when time difference synchronization means provides capacitance pen during synchronization.Time difference is same
The data content mutually transmitted between step instrument and capacitance pen further includes the customer identification code (ID) of each capacitance pen, if pairing
Cross or initial time parameter of whether once correcting one's mistakes, at present default initial time parameter, F1 frequency values, the frequency values of F2, capacitance pen
Code name or time difference synchronization means setting capacitance pen sequential write and new time difference parameter (value of Td) etc..
Fig. 4 shows time slot (Time Slot) schematic diagram of multiple capacitance pen synchronization time difference transmitting signals.Such as Fig. 4 institutes
Show that there is time difference Td between the electrode signal transmitting of three capacitance pens.Time slot (the Time of the electrode signal transmitting of three capacitance pens
Slot) using beacon as starting, the period of beacon is TB0 to TB1, and during which the electrode emission frequency of capacitance pen is the electric field of F1
Signal, then the electrode electric field signal that then tranmitting frequency is F2 during pressure gradient time slot, but the beacons of three capacitance pens
Initial time TB0 is simultaneously differed, and at a distance of time difference Td.That is, first capacitance pen tranmitting frequency F1 electric field signal and second
At a distance of the time difference be Td between the electric field signal of capacitance pen tranmitting frequency F1, the electric field signal of the second capacitance pen tranmitting frequency F1 and
Same time difference Td apart between the electric field signal of 3rd capacitance pen tranmitting frequency F1, and the electricity of the first capacitance pen tranmitting frequency F1
Apart the time difference is then 2Td between the electric field signal of field signal and the 3rd capacitance pen tranmitting frequency F1.Therefore time difference Td makes the
The initial time TB0 of the beacon of two capacitance pens is more late than the end time of the pressure stage time slot of the first capacitance pen, also makes the 3rd
The initial time TB0 of the beacon of capacitance pen is more late than the end time of the pressure stage time slot of the second capacitance pen, to avoid difference
The period of capacitance pen beacon partly overlaps with the pressure gradient time slot period, contact panel is correctly identified signal source or electricity
Hold the number of pen or the status of capacitance pen.
Therefore allow multiple capacitance pens to launch signal in different periods, contact panel is correctly received signal, and and then
The number of identification source or the number of capacitance pen, and the source of identification signal.Each capacitance pen maintains original transmitting mould
The frequency range of formula and launched electric field signal, but the specific time difference (i.e. the multiple of Td) is maintained between each capacitance pen.
Fig. 5 shows a kind of flow chart of the method for synchronization time difference transmitting signal according to an embodiment of the invention.
The touch-control input device for performing the method for synchronization time difference transmitting signal includes contact panel and time difference synchronization means, at least two
For a capacitance pen on contact panel, each capacitance pen includes emission electrode and synchronization interface, and time difference synchronization means is connected to often
One synchronization interface is with the synchronous data content of passing time difference.The method of synchronization time difference transmitting signal can be defeated by touch-control is stored in
Enter the computer-executable instructions in the store media of device or formula performs.Store media includes computer-readable storage medium,
Computer-executable instructions are stored, to perform the method for synchronization time difference transmitting signal.Synchronization time difference launches the method bag of signal
Containing following steps.First in step 501, the inner parameter of reset time difference synchronization means.Then in step 502, the time
Poor synchronization means receives the initial time parameter of the first capacitance pen.Then in step 503, time difference synchronization means is with the first electricity
Hold the initial time of pen as a reference value.Then in step 504, time difference synchronization means receives the time ginseng of the second capacitance pen
Number.Then in step 505, the time difference parameter Td of the second capacitance pen receiving time difference synchronization means transmission.Then in step
In 506, the time of the second capacitance pen adjustment starting transmitting signal, make that there is Td between the period of transmitting signal and the first capacitance pen
Time difference.Then in step 507, judge whether to reach the session number purpose upper limit of capacitance pen.Then in step 508,
Determine whether that other capacitance pens add running.The repeat step 504~508 if having other capacitance pens to add running, sequentially makes
The initial time parameter of the capacitance pen newly added adds the time difference of Td.
The above embodiments are only technological thoughts and feature to illustrate the invention, its purpose is in the people for making to be familiar with this skill
Scholar will appreciate that present disclosure and implements according to this, when the scope of the claims that cannot limit the present invention according to this, i.e., it is all other without departing from
The various equivalent changes or modification that disclosed spirit is completed all are covered disclosed herein in the range of, should all wrap
It is contained in following claim.
Claims (10)
- A kind of 1. method of synchronization time difference transmitting signal, it is characterised in that include：(a) touch-control input device is provided, which includes contact panel and time difference synchronization means；(b) at least two capacitance pens are provided on the contact panel, each capacitance pen includes emission electrode and synchronization interface, will The time difference synchronization means is connected to the synchronization interface with the synchronous data content of passing time difference；(c) inner parameter of the time difference synchronization means is reset；(d) the time difference synchronization means receives the initial time parameter of the first capacitance pen；(e) initial time of the time difference synchronization means using first capacitance pen is used as a reference value；(f) the time difference synchronization means receives the time parameter of the second capacitance pen；(g) second capacitance pen receives the time difference parameter of time difference synchronization means transmission；And(h) time of second capacitance pen adjustment starting transmitting signal makes it launch between the period of signal and first capacitance pen With the time difference.
- 2. according to the method described in claim 1, it is characterized in that：Wherein the synchronization interface includes IC bus I2C, sequence Row peripheral interface SPI or serial transmission communication protocol Uart.
- 3. according to the method described in claim 1, it is characterized in that further include：(i) judge whether up to the session number purpose upper limit of capacitance pen；And(j) determine whether that other capacitance pens add running.
- 4. according to the method described in claim 3, it is characterized in that：Wherein if the line number of capacitance pen does not reach the upper limit, and has Other capacitance pens add running, then repeat step (f)-(j), and the initial time parameter for the capacitance pen for sequentially making newly to add adds should Time difference.
- 5. according to the method described in claim 1, it is characterized in that：Phase wherein between the time difference synchronization means and the capacitance pen The time difference synchronization data content mutually transmitted further includes the customer identification code ID of each capacitance pen, if matched or whether Once initial time of correcting one's mistakes parameter, at present default initial time parameter, the frequency values of the capacitance pen, the capacitance pen code name or should Time difference synchronization means sets the sequential write of the capacitance pen and new time difference parameter.
- 6. a kind of capacitance pen and touch-control input device using synchronization time difference method for transmitting signal, it is characterised in that include：Touch-control input device, the touch-control input device include contact panel and time difference synchronization means；At least two capacitance pens, each capacitance pen include emission electrode and synchronization interface, the time difference synchronization means respectively with The synchronization interface of two capacitance pen is connected with the synchronous data content of passing time difference；AndComputer-readable storage medium is located on the touch-control input device, computer-executable instructions is stored, to perform synchronization time The method of difference transmitting signal, this method include:(a) inner parameter of the time difference synchronization means is reset；(b) the time difference synchronization means receives the initial time parameter of the first capacitance pen；(c) initial time of the time difference synchronization means using first capacitance pen is used as a reference value；(d) the time difference synchronization means receives the time parameter of the second capacitance pen；(e) second capacitance pen receives the time difference parameter of time difference synchronization means transmission；And(f) time of second capacitance pen adjustment starting transmitting signal makes it launch between the period of signal and first capacitance pen With the time difference.
- 7. capacitance pen according to claim 6 and touch-control input device, it is characterised in that：Wherein the synchronization interface includes collection Into circuit bus I2C, serial peripheral interface SPI or serial transmission communication protocol Uart.
- 8. capacitance pen according to claim 6 and touch-control input device, it is characterised in that this method further includes:(g) judge whether up to the session number purpose upper limit of capacitance pen；And(h) determine whether that other capacitance pens add running.
- 9. capacitance pen according to claim 8 and touch-control input device, it is characterised in that if the wherein session number of capacitance pen Mesh does not reach the upper limit, and has other capacitance pens to add running, then repeat step (d)-(h), and the capacitance pen for sequentially making newly to add rises Beginning time parameter adds the time difference.
- 10. capacitance pen according to claim 6 and touch-control input device, it is characterised in that the wherein time difference synchronization means Time difference for mutually being transmitted between the capacitance pen synchronous data content further includes the customer identification code ID of each capacitance pen, Whether matched or initial time parameter of whether once correcting one's mistakes, at present default initial time parameter, the capacitance pen frequency values, should The code name of capacitance pen or the time difference synchronization means set the sequential write of the capacitance pen and new time difference parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610955255.2A CN108008840B (en) | 2016-10-27 | 2016-10-27 | The method and capacitance pen and touch-control input device of synchronization time difference transmitting signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610955255.2A CN108008840B (en) | 2016-10-27 | 2016-10-27 | The method and capacitance pen and touch-control input device of synchronization time difference transmitting signal |
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| Publication Number | Publication Date |
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| CN108008840A true CN108008840A (en) | 2018-05-08 |
| CN108008840B CN108008840B (en) | 2019-09-06 |
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| CN201610955255.2A Expired - Fee Related CN108008840B (en) | 2016-10-27 | 2016-10-27 | The method and capacitance pen and touch-control input device of synchronization time difference transmitting signal |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203673444U (en) * | 2013-12-20 | 2014-06-25 | 艾攀科技有限公司 | Active capacitive stylus |
| CN104516606A (en) * | 2013-09-30 | 2015-04-15 | 株式会社日本显示器 | Touch detection device, display device with touch detection function, and electronic apparatus |
| CN105404436A (en) * | 2014-05-13 | 2016-03-16 | 禾瑞亚科技股份有限公司 | Touch processing apparatus and detecting method, and touch system |
| US20160299583A1 (en) * | 2015-03-02 | 2016-10-13 | Wacom Co., Ltd. | Active capacitive stylus, sensor controller, related system and method |
-
2016
- 2016-10-27 CN CN201610955255.2A patent/CN108008840B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104516606A (en) * | 2013-09-30 | 2015-04-15 | 株式会社日本显示器 | Touch detection device, display device with touch detection function, and electronic apparatus |
| CN203673444U (en) * | 2013-12-20 | 2014-06-25 | 艾攀科技有限公司 | Active capacitive stylus |
| CN105404436A (en) * | 2014-05-13 | 2016-03-16 | 禾瑞亚科技股份有限公司 | Touch processing apparatus and detecting method, and touch system |
| US20160299583A1 (en) * | 2015-03-02 | 2016-10-13 | Wacom Co., Ltd. | Active capacitive stylus, sensor controller, related system and method |
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| CN108008840B (en) | 2019-09-06 |
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