WO2016002371A1 - タッチパネルコントローラ、タッチパネルシステム、およびスタイラスペン - Google Patents
タッチパネルコントローラ、タッチパネルシステム、およびスタイラスペン Download PDFInfo
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- WO2016002371A1 WO2016002371A1 PCT/JP2015/064355 JP2015064355W WO2016002371A1 WO 2016002371 A1 WO2016002371 A1 WO 2016002371A1 JP 2015064355 W JP2015064355 W JP 2015064355W WO 2016002371 A1 WO2016002371 A1 WO 2016002371A1
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- touch panel
- signal
- stylus pen
- synchronization signal
- preparation
- Prior art date
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- 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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- 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
-
- 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
- G06F3/04162—Control or interface arrangements specially adapted for digitisers for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware
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- 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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0441—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using active external devices, e.g. active pens, for receiving changes in electrical potential transmitted by the digitiser, e.g. tablet driving signals
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- 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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0442—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using active external devices, e.g. active pens, for transmitting changes in electrical potential to be received by the digitiser
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04105—Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
Definitions
- the present invention relates to a touch panel controller that outputs a synchronization signal captured by a stylus pen at a predetermined timing to the touch panel, a stylus pen that captures a synchronization signal of the touch panel at a predetermined timing, and a touch panel including the stylus pen, the touch panel controller, and the touch panel. It is about the system.
- Touch panels have become indispensable as input means to electronic devices.
- Touch panels are generally used as input means from relatively large devices such as televisions, monitors and whiteboards to relatively small devices such as smartphones and tablet terminals.
- Patent Document 1 discloses a touch panel system that can accurately detect each touch position even when touch operations with a plurality of stylus pens and fingers are performed simultaneously.
- the touch panel system of Patent Document 1 includes a plurality of transmission electrodes (first signal lines) to which a drive signal and a pen synchronization signal are applied by a transmission unit, and a plurality of reception electrodes (second signal lines) that output response signals to the reception unit. ), A stylus pen, and a control unit.
- the stylus pen sends a pen identification signal to the receiving electrode in response to detecting the pen synchronizing signal of the transmitting electrode, and the control unit controls the driving timing at which the transmitting unit applies the driving signal and the pen synchronizing signal to the transmitting electrode.
- the touch position is detected based on the detection data output by the receiving unit.
- the drive timing of a stylus pen and the drive timing which a control part drives a transmission electrode can be synchronized, and the indicator which performed touch operation based on a pen identification signal can be discriminate
- the touch operation with a finger and the touch operation via the stylus pen can be detected simultaneously.
- Japanese Patent Publication Japanese Patent Laid-Open No. 2012-22543 (published on February 2, 2012)
- FIG. 11 is a diagram for explaining a mechanism for notifying the external device of the touch panel controller such as a stylus pen of the driving timing of the touch panel controller.
- FIG. 11 shows a signal waveform output from the touch panel controller to drive lines D 0 to D n and a signal waveform D n + 1 for driving the pen tip of the stylus pen.
- a synchronization waveform applied to the drive lines D 0 to D n is received during the synchronization period, and a change in the high state / low state is captured with respect to the received synchronization waveform. Detect a synchronous waveform. Then, the stylus pen sets a drive timing for driving the pen tip of the stylus pen using the detected synchronization waveform. Specifically, during the touch and pen input detection period, the drive signal is sequentially output to the drive lines D 0 to D n .
- the drive signal of the drive line D n-1 is high ( from high) state to the timing of the low (low) state, so that the drive signal of the next drive line D n makes a transition from a low (low) state to the high (high) state.
- the pen tip of the stylus pen is driven, for example, the capacitance of the touch panel is changed, the change in the capacitance is detected via each sense line, and the stylus by the user is detected.
- the touch panel controller detects additional information such as whether or not a button provided on the pen is pressed and writing pressure.
- FIG. 12 is a diagram showing a synchronization waveform received by the stylus pen depending on the position of the stylus pen with respect to the touch panel (distance between the stylus pen and the sensor surface of the touch panel).
- FIG. 12A shows a synchronization waveform received by the stylus pen 103 when the stylus pen 103 is separated from the touch panel 102 by an appropriate distance or more.
- the synchronization waveform received by the stylus pen 103 has no amplitude, and the change between the high state and the low state cannot be correctly captured. In such a case, the stylus pen 103 is The detection of the synchronization signal may fail.
- FIG. 12B is a diagram illustrating a synchronization waveform received by the stylus pen 103 when the stylus pen 103 is at an appropriate distance from the touch panel 102. As shown in the figure, in such a case, a change in the high state / low state is relatively clearly shown in the synchronization waveform received by the stylus pen 103, and the stylus pen 103 Can easily detect the synchronization signal.
- FIG. 12C is a diagram illustrating a synchronization waveform received by the stylus pen 103 when the stylus pen 103 is closer to the touch panel 102 than an appropriate distance.
- the synchronization waveform received by the stylus pen 103 is too strong, and the received synchronization waveform is crushed, resulting in a high state / low state.
- the change in the (Low) state cannot be correctly captured, and the stylus pen 103 may fail to detect the synchronization signal.
- the stylus pen can exist at any position with respect to the touch panel. However, as described above, the stylus pen is more than the appropriate distance from the touch panel or more than the appropriate distance. If it is close, the stylus pen cannot correctly capture the synchronization waveform, and there is a problem that the detection of the synchronization signal may fail.
- the stylus pen fails to detect the synchronization signal, for example, in a stylus pen having a function of driving the pen tip at a predetermined timing, there is a problem that the timing for driving the pen tip cannot be set. .
- An object of the present invention is to provide a touch panel controller, a touch panel system, and a stylus pen that can suppress the possibility that the stylus pen will fail to detect a synchronization signal.
- the touch panel controller of the present invention is a touch panel controller that outputs a synchronization signal captured by the stylus pen at a predetermined timing to the touch panel, and adjusts reception sensitivity of the synchronization signal in the stylus pen.
- a preparation signal including a reference high state and a low state is generated, and the preparation signal is output to the touch panel prior to the timing of outputting the synchronization signal to the touch panel.
- the touch panel controller generates a preparation signal including a high state and a low state, which is a reference for adjusting the reception sensitivity of the synchronization signal in the stylus pen, and outputs the synchronization signal to the touch panel. Prior to the timing, the preparation signal is output to the touch panel.
- the stylus pen can use a preparation signal including a high state and a low state, which is a reference for adjusting the reception sensitivity of the synchronization signal output from the touch panel controller, the stylus pen can detect the synchronization signal.
- a touch panel controller that can suppress the possibility of failure can be realized.
- a touch panel system of the present invention is a touch panel system including a stylus pen, a touch panel, and a touch panel controller that outputs a synchronization signal captured by the stylus pen at a predetermined timing to the touch panel.
- the touch panel controller generates a preparation signal including a high state and a low state, and outputs the preparation signal to the touch panel before timing to output the synchronization signal to the touch panel.
- the touch panel controller generates a preparation signal including a high state and a low state, and outputs the preparation signal to the touch panel prior to the timing of outputting the synchronization signal to the touch panel.
- the stylus pen includes a synchronization signal reception adjustment circuit that adjusts the reception sensitivity of the synchronization signal in the stylus pen during the reception period of the preparation signal based on the received preparation signal.
- the stylus pen can adjust the reception sensitivity of the synchronization signal in the stylus pen during the reception period of the preparation signal based on the received preparation signal.
- a touch panel system capable of suppressing the possibility of failure in detection can be realized.
- the stylus pen of the present invention is a stylus pen that takes in a synchronization signal of a touch panel at a predetermined timing in order to solve the above-described problem, receives a preparation signal at a timing earlier than the synchronization signal, and receives the prepared signal And a synchronization signal reception adjustment circuit for adjusting the reception sensitivity of the synchronization signal during the reception period of the preparation signal.
- the synchronization signal reception that receives the preparation signal at a timing earlier than the synchronization signal and adjusts the reception sensitivity of the synchronization signal during the preparation signal reception period based on the received preparation signal.
- An adjustment circuit is provided.
- the stylus pen can adjust the reception sensitivity of the synchronization signal in the stylus pen during the reception period of the preparation signal based on the received preparation signal, the detection of the synchronization signal fails. It is possible to realize a stylus pen that can suppress the possibility of being lost.
- a touch panel controller a touch panel system, and a stylus pen that can suppress the possibility that the stylus pen will fail to detect the synchronization signal.
- FIG. 1 is a block diagram illustrating a schematic configuration of a touch panel system according to a first embodiment.
- 2 is a diagram showing a schematic circuit configuration of a touch panel provided in the touch panel system of Embodiment 1.
- FIG. It is a figure which shows the signal waveform output to a touch panel from the touch panel controller with which the touch panel system of Embodiment 1 was equipped, and the signal waveform which shows the drive timing which drives the pen tip of a stylus pen. It is a figure which shows the preparation waveform and synchronous waveform which a stylus pen receives by the position of the stylus pen with respect to the touch panel with which the touch panel system of Embodiment 1 was equipped.
- FIG. 2 is a diagram showing a schematic configuration of a touch panel controller provided in the touch panel system of Embodiment 1.
- FIG. 3 is a cross-sectional view showing a configuration of a stylus pen provided in the touch panel system of Embodiment 1.
- FIG. It is a figure for demonstrating the timing which the synchronizing signal detection circuit of a stylus pen takes in a synchronizing signal. It is a figure which shows an example of the waveform of the preparation signal used with the touchscreen system of Embodiment 2.
- FIG. It is a figure which shows an example of the waveform of the preparation signal used with the touchscreen system of Embodiment 3.
- FIG. 10 is a functional block diagram illustrating a configuration of a mobile phone according to a fourth embodiment.
- FIGS. 1 to 10 Embodiments of the present invention will be described with reference to FIGS. 1 to 10 as follows.
- FIG. 1 is a block diagram showing a schematic configuration of a touch panel system 1 of the present embodiment.
- the touch panel system 1 includes a touch panel 2, a stylus pen 3, and a touch panel controller 4 that drives the touch panel 2 and the stylus pen 3.
- FIG. 2 is a diagram illustrating a schematic circuit configuration of the touch panel 2 provided in the touch panel system 1.
- a plurality (n) of drive lines D 0 to D n extending in the left-right direction in the drawing are provided in parallel, and the drive lines D 0 to D n (first signal lines) and A plurality (m) of sense lines S 0 to S m (second signal lines) extending in the vertical direction in the drawing are provided in parallel so as to intersect each other.
- Capacitors C 00 to C nm for accumulating capacitance are provided at the intersections of the drive lines D 0 to D n and the sense lines S 0 to S m . .
- the above m and n may be the same or different.
- the touch panel controller drives each of the drive lines D 0 to D n during a touch and pen input detection period, which will be described in detail later, and also performs the above-described static by touch via each of the sense lines S 0 to S m. A change in electric capacity is detected, and a touch position is detected.
- a capacitive touch panel will be described as an example.
- the stylus pen receives a synchronization signal output from the touch panel controller to the touch panel, and the stylus pen receives the above-mentioned signal at a predetermined timing.
- the method is not limited to this as long as the synchronization signal is captured and the touch panel controller and the stylus pen are synchronized with each other.
- a resistive film type touch panel may be used.
- FIG. 3 is a diagram illustrating a signal waveform output from the touch panel controller to the touch panel and a signal waveform indicating a driving timing for driving the pen tip of the stylus pen.
- the same synchronization signal is output from the touch panel controller 4 (see FIG. 1) to the drive lines D 0 to D n (see FIG. 1) of the touch panel 2 during the synchronization period.
- drive signals are sequentially output to the drive lines D 0 to D n . That is, during the touch and pen input detection period, the timing at which the drive signal of the drive line D n-1 becomes Low from High, so that the drive signal of the next drive line D n becomes High from Low .
- the stylus pen 3 receives the synchronization signal from the touch panel 2, takes in the synchronization signal at a predetermined timing, performs synchronization, are shown, driven in touch and pen input detection period driveline D n
- the pen tip of the stylus pen 3 is driven, Whether the button on the stylus pen 3 is pressed by the user by changing the capacitance on the touch surface, detecting the change in the capacitance via each of the sense lines S 0 to S m
- the touch panel controller 4 detects additional information such as the current state and writing pressure.
- the drive line D n + 1 is referred to as virtual.
- the drive line D n + 1 is not provided on the touch panel 2 unlike the drive lines D 0 to D n, and transmits and receives signals to and from the touch panel controller 4 wirelessly.
- This is a drive line that is virtually incorporated in order to explain that the stylus pen 3 performing the operation receives the synchronization signal and determines the timing for driving the pen tip of the stylus pen 3 based on the synchronization signal. Because.
- the stylus pen 3 is used for the preparation waveform (described later) during the reception preparation period of the synchronization signal indicated by the dotted line and the synchronization waveform during the synchronization period. 2 and the drive waveform during the touch and pen input detection period indicates the timing at which the pen tip of the stylus pen 3 is driven.
- the signal waveforms of the drive lines D 0 to D n shown in FIG. 3 are signals applied from the touch panel controller 4 to the drive lines D 0 to D n of the touch panel 2.
- the drive timing during the touch and pen input detection period of the drive lines D 0 to D n and the drive timing of the pen tip during the touch and pen input detection period of the virtual drive line D n + 1 are matched.
- the sense lines S 0 to S m are driven.
- a synchronization signal reception preparation period is provided at a timing before the synchronization period, and during this synchronization signal reception preparation period, the touch panel controller 4 is provided.
- the same preparation signal (preparation waveform) is applied to the drive lines D 0 to D n of the touch panel 2.
- the stylus pen 3 is supplied from the touch panel controller 4 to the drive lines D 0 to D n of the touch panel 2 before the touch panel controller 4 outputs the synchronization signal.
- synchronization with the stylus pen 3 is performed. This makes it easier to detect the signal.
- the virtual drive line indicating the timing at which the pen tip of the stylus pen 3 is driven is D n + 1 and the drive lines D 0 to D n are provided on the touch panel 2.
- the virtual drive line indicating the timing at which the pen tip of the stylus pen 3 is driven is not necessarily D n + 1 such as D 0 or D n + 2.
- the drive lines D 1 to D n + 1 are provided on the touch panel 2. If it is assumed, D 0 and D n + 2 and later may be set as virtual drive lines, and the pen tip may be driven with this waveform.
- the drive lines D 0 to D n and the virtual drive line D n + 1 will be described as being sequentially driven.
- the drive lines D 0 to D n and the virtual drive line D n + 1 may be driven in parallel by using a sequence signal, a Hadamard code string, or the like.
- the position of the detection object may be detected from the correlation value obtained by performing the correlation calculation, or the position of the detection object may be detected from the restoration value obtained by performing the restoration calculation of the code string.
- the number of times of sensing (number of times of integration) can be increased, so that the S / N ratio is improved and the position is highly accurate. Detection can be performed.
- the present invention is not limited to this, and the drive line D 0 is not limited thereto. also the present invention when only preparation signal in part of the ⁇ D n and synchronization signals are output can be applied.
- FIG. 4 is a diagram illustrating a preparation waveform and a synchronization waveform received by the stylus pen 3 depending on the position of the stylus pen 3 with respect to the touch panel 2 (distance between the stylus pen 3 and the sensor surface of the touch panel 2).
- FIG. 4A is a diagram illustrating a preparation waveform and a synchronization waveform received by the stylus pen 3 when the stylus pen 3 is separated from the touch panel 2 by an appropriate distance or more.
- the touch panel controller 4 Before the touch panel controller 4 outputs a synchronization signal from the touch panel controller 4 to the drive lines D 0 to D n of the touch panel 2, it becomes a reference for adjusting the reception sensitivity of the synchronization signal in the stylus pen 3.
- a preparation signal including a high state and a low state is output.
- the stylus pen 3 includes a synchronization signal reception adjustment circuit that receives the preparation signal and adjusts the reception sensitivity of the synchronization signal based on the received preparation signal.
- the stylus pen 3 when it is determined that the amplitude of the preparation signal received by the stylus pen 3 is small as shown in FIG. 4A, the synchronization shown in FIG. During the signal reception preparation period, the gain is increased and the amplitude is increased, and in the synchronization signal received after the stylus pen 3 receives the preparation signal, the change between the high state and the low state is relatively clear. As shown, the stylus pen 3 can stably detect the synchronization signal.
- FIG. 4B is a diagram showing a preparation waveform and a synchronization waveform received by the stylus pen 3 when the stylus pen 3 is at an appropriate distance from the touch panel 2.
- the change between the high state and the low state appears relatively clearly. Therefore, in the synchronization signal reception adjusting circuit of the stylus pen 3, there is no need to adjust the gain to an appropriate amplitude by increasing or decreasing the gain.
- the synchronization signal received after the stylus pen 3 receives the preparation signal the high state / The change in the low state appears relatively clearly, and the stylus pen 3 can stably detect the synchronization signal.
- FIG. 4C is a diagram illustrating a preparation waveform and a synchronization waveform received by the stylus pen 3 when the stylus pen 3 is closer than an appropriate distance with respect to the touch panel 2.
- the preparation signal received by the stylus pen 3 is too strong in the received signal, and the received preparation waveform is crushed, and the high / low state changes. Cannot be captured correctly.
- the synchronization signal reception adjusting circuit of the stylus pen 3 when it is determined that the amplitude of the preparation signal received by the stylus pen 3 is large as shown in FIG. 4C, the synchronization shown in FIG.
- the gain is adjusted to an appropriate amplitude by reducing the gain so that the change of the high state / low state appears relatively clearly in the synchronization signal received by the stylus pen 3 after receiving the preparation signal.
- the stylus pen 3 can stably detect the synchronization signal.
- the adjustment of the reception sensitivity of the synchronization signal is performed by adjusting the last timing of the synchronization signal reception preparation period (see FIG. 3), that is, the synchronization signal.
- the present invention is not limited to this, and the adjustment of the reception sensitivity of the synchronization signal may be performed during the reception preparation period of the synchronization signal.
- FIG. 5 is a diagram illustrating a schematic configuration of the touch panel controller 4 provided in the touch panel system 1.
- the touch panel controller 4 includes a drive line drive circuit 5, a sense amplifier 6, a timing generator 7, a preparation signal generation unit 8, an AD converter 9, and a processing unit 10. It has been.
- the drive line drive circuit 5 is a circuit that outputs a synchronization signal and a drive signal generated based on the clock signal CL generated by the timing generator 7 to each of the drive lines D 0 to D n .
- the sense amplifier 6 Based on the clock signal CL generated by the timing generator 7, the drive signal, and the pen tip drive signal of the stylus pen 3, the sense amplifier 6 receives the capacitance data via the sense lines S 0 to S m. Is sent to the AD converter 9.
- a clock signal CL is generated and sent to the drive line driving circuit 5, the sense amplifier 6, the preparation signal generating unit 8, and the like.
- the preparation signal generator 8 generates a preparation signal based on the clock signal CL from the timing generator 7, controls the drive line drive circuit 5, and before the synchronization signal is output to each of the drive lines D 0 to D n. Then, a preparation signal is outputted to each of the drive lines D 0 to D n .
- preparation is performed so that one preparation signal selected from various types of preparation signals including preparation signals described in Embodiments 2 and 3 described later can be generated.
- the preparation signal may be generated by the timing generator 7.
- the preparation signal is output at a timing before the synchronization signal is output every time the synchronization signal is output.
- the capacity data is converted into digital data and then sent to the processing unit 10.
- the processing unit 10 performs processing corresponding to the determined input operation based on the capacity data regarding the touch position and additional information.
- the stylus pen 3 of the present embodiment has, for example, a writing pressure sensor for detecting writing pressure, and a writing pressure signal from the writing pressure sensor is output while synchronizing with the touch panel controller 4. It is like that.
- the stylus pen 3 is not necessarily limited thereto, and may not include a writing pressure sensor for detecting writing pressure.
- FIG. 6 is a cross-sectional view showing the configuration of the stylus pen 3.
- the stylus pen 3 includes a pen body 11 that is held by a user and has a conductive grip portion 11 a that is formed in a substantially cylindrical shape so that the user can hold it by a hand.
- a pen tip portion 12 that is pressed against the touch panel 2 at the time of a touch operation is provided at the tip of.
- the pen tip portion 12 is provided on the back side of the pen tip shaft 12b, a pen tip cover 12a, a pen tip shaft 12b, insulators 12c and 12c that hold the pen tip cover 12a in an axially movable manner, and the pen tip shaft 12b.
- a writing pressure sensor 12d is provided on the back side of the pen tip shaft 12b, a pen tip cover 12a, a pen tip shaft 12b, insulators 12c and 12c that hold the pen tip cover 12a in an axially movable manner, and the pen tip shaft 12b.
- a writing pressure sensor 12d is provided on the back side of the pen tip shaft 12b, a pen tip cover 12a, a pen tip shaft 12b, insulators 12c and 12c that hold the pen tip cover 12a in an axially movable manner, and the pen tip shaft 12b.
- the pen tip cover 12a is made of an insulating material, and the pen tip shaft 12b is made of a conductive material, for example, a metal or a conductive synthetic resin material.
- the writing pressure sensor 12d is made of, for example, a semiconductor piezoresistive pressure sensor, and a semiconductor strain gauge is formed on the surface of a diaphragm (not shown). Therefore, when the pen tip cover 12a of the pen tip portion 12 is pressed against the touch panel 2 during the touch operation, the pen tip shaft 12b is pushed through the pen tip cover 12a and presses the surface of the diaphragm of the writing pressure sensor 12d. Thereby, a change in electric resistance due to the piezoresistance effect generated by the deformation of the diaphragm is converted into an electric signal. Thereby, the writing pressure in the stylus pen 3 can be detected. Furthermore, the principle of pen pressure detection is not necessarily limited to this, and other detection principles can be employed.
- the pen body 11 includes a connection switch 13, a control circuit 14, operation changeover switches 15 a and 15 b, a sense circuit 16, a synchronization signal reception adjustment circuit 17, a synchronization signal detection circuit 18, and timing adjustment.
- a circuit 19 and a drive circuit 20 are provided.
- the connection switch 13 has a grip portion terminal connected to the grip portion 11a, a pen tip terminal connected to the pen tip shaft 12b, and a ground terminal having a ground potential.
- the connection switch 13 switches and connects the grip portion terminal to either the pen tip terminal or the ground terminal.
- connection switch 13 can be omitted.
- the grip portion 11a of the pen body 11 is connected to a reference potential (GND), for example.
- GND reference potential
- connection switch 13 is an electronic switch composed of a field effect transistor (FET) and the like, and is on / off controlled by the control circuit 14.
- FET field effect transistor
- the connection switch 13 is off, the pen tip shaft 12 b is electrically disconnected from the grip portion 11 a of the pen body 11.
- the stylus pen 3 may have difficulty in obtaining the synchronization signal of the touch panel 2 even if the pen tip cover 12 a is brought close to the touch panel 2.
- the connection switch 13 when the connection switch 13 is turned on, the pen tip shaft 12b is electrically connected to the grip portion 11a of the pen body 11, and the human body is electrically connected to the pen tip shaft 12b via the grip portion 11a. Accordingly, since the human body has a relatively large capacitance, when the stylus pen 3 comes close to or comes into contact with the touch panel 2, the stylus pen 3 can easily acquire a synchronization signal of the touch panel.
- the stylus pen 3 includes, for example, a push-type first operation switch 21a and a second operation switch 21b. By pressing the first operation switch 21a and the second operation switch 21b, the first operation switch 21a and the second operation switch 21b are pressed.
- the functions assigned to the first operation switch 21 a and the second operation switch 21 b are executed via the control circuit 14. Examples of the function assigned to the first operation switch 21a include an eraser function. The eraser function can be turned on / off with the first operation switch 21a. Further, as a function assigned to the second operation switch 21b, for example, a right click function of the mouse can be cited, and the right click function of the mouse can be turned on / off by the second operation switch 21b. is there.
- the eraser function and the right-click function of the mouse are examples, and are not limited to the eraser function and the right-click function of the mouse. It is also possible to add other functions by providing other operation switches.
- the touch position of the stylus pen 3 on the touch panel 2 is determined when the connection switch 13 of the stylus pen 3 is turned off (the pen tip shaft 12b is electrically disconnected from the grip portion 11a of the pen body 11). It is detected by touching the touch panel 2 with the pen 3. The touch position is detected by driving a virtual drive line D n + 1 or the like.
- the pen tip of the stylus pen 3 is changed by changing the waveform corresponding to the virtual drive line Dn + 1 or the like.
- the capacitance on the touch surface of the touch panel 2 is changed, the change in the capacitance is detected via each of the sense lines S 0 to S m, and the stylus pen 3 provided by the user is provided.
- the touch panel controller 4 detects additional information such as whether or not the button is pressed and writing pressure.
- the stylus pen 3 of the present embodiment transmits and receives signals to and from the touch panel controller 4 wirelessly. Accordingly, the pen tip 12 is driven in the same pattern as driving the virtual drive line D n + 1 so as to match the drive timing of the drive lines D 0 to D n in the touch panel controller 4. Therefore, the stylus pen 3 is provided with a drive circuit 20 so as to be driven in the same manner as the driver of the touch panel controller 4.
- the drive lines D 0 to D n in the touch panel controller 4 are driven based on the drive timing generated by the timing generator 7 (FIG. 5). For this reason, the stylus pen 3 must also be operated in synchronization with the timing when the touch panel controller 4 is driven. Therefore, in the stylus pen 3 of the present embodiment, the sense circuit 16, the synchronization signal reception adjustment circuit 17, the synchronization signal detection circuit 18, and the timing adjustment circuit 19 are provided, so that the touch panel controller 4 is driven by the stylus pen 3. The possibility of failure in signal detection can be suppressed, and the timing of the synchronization signal of the touch panel controller 4 and the timing of the pen synchronization signal generated by the timing adjustment circuit 19 in the stylus pen 3 are determined. Try to match.
- the stylus pen 3 detects the synchronization signal generated by the timing generator 7 (FIG. 5) of the touch panel controller 4 with the sense circuit 16, the synchronization signal reception adjustment circuit 17, and the synchronization signal detection circuit 18.
- the driving operation of the stylus pen 3 is performed by turning on the operation changeover switch 15a and turning off the operation changeover switch 15b, and the touch panel controller 4 by the sense circuit 16, the synchronization signal reception adjustment circuit 17, and the synchronization signal detection circuit 18.
- the preparation signal and the synchronization signal detection period for detecting the preparation signal and the synchronization signal, the preparation period, the operation changeover switch 15a is turned off, and the operation changeover switch 15b is turned on, and the pen tip 12 is turned on by the drive circuit 20. It is configured by repeating three periods with a drive mode period for driving.
- the synchronization signal reception adjustment circuit 17 adjusts the gain setting of the sense circuit 16 and the capture timing of the synchronization signal detection circuit 18 based on the output of the preparation signal of the sense circuit 16.
- the synchronization signal reception adjustment circuit 17 performs the synchronization signal reception preparation period shown in FIG.
- the change between the high state and the low state is relatively clearly shown in the stylus pen 3.
- the synchronization signal reception adjusting circuit 17 determines that the output amplitude of the preparation signal from the sense circuit 16 is too large, the synchronization circuit 16 receives the synchronization signal during the synchronization signal reception preparation period shown in FIG. The gain is adjusted to an appropriate amplitude so that the change of the high state / low state appears relatively clearly in the synchronization signal received by the sense circuit 16 after receiving the preparation signal.
- the synchronization signal can be detected stably.
- the preparation signal and synchronization signal detection period in the stylus pen 3 is a waiting period for detecting a preparation signal first and then detecting a bit pattern representing a synchronization waveform whose reception sensitivity is adjusted based on the preparation waveform. This is a period in which the drive of the pen tip unit 12 is turned off and the sync signal pattern is detected from the pen tip signal waveform.
- the preparatory period in the stylus pen 3 is a preparatory period for starting to drive the pen tip in synchronization with the touch panel controller 4 after the synchronization signal pattern is detected, and is a period for interpreting the additional information taking the drive start timing. It is.
- the drive mode period in the stylus pen 3 is a period in which the pen tip unit 12 is driven by the drive circuit 20, and the pen tip unit is fine-adjusted so as to match the drive timing of the touch panel controller 4.
- 12 is a period during which 12 is driven.
- the drive circuit 20 of the stylus pen 3 is driven in accordance with the drive timing of the touch panel controller 4.
- the drive circuit 20 turns on the operation changeover switch 15 b and turns off the operation changeover switch 15 a to drive the pen tip unit 12 via the control circuit 14.
- the synchronization signal reception adjustment circuit 17 sets the gain of the sense circuit 16 based on the output of the preparation signal of the sense circuit 16 has been described.
- the case of adjusting the capture timing of the synchronization signal detection circuit 18 based on the output of the preparation signal of the sense circuit 16 will be described in the second and third embodiments.
- touch panel system 1 of the present embodiment the functions of drive lines D 0 to D n (first signal lines) and the functions of sense lines S 0 to S m (second signal lines) are fixed. However, the touch position may be detected while the drive lines D 0 to D n and the sense lines S 0 to S m are switched at a constant cycle.
- the preparation signal generated by the preparation signal generation unit 8 (see FIG. 5) of the touch panel controller 4 is the timing at which the synchronization signal detection circuit 18 (see FIG. 6) of the stylus pen 3 takes in the synchronization signal. It differs from the first embodiment in that it is a predetermined signal. Other configurations are as described in the first embodiment. For convenience of explanation, members having the same functions as those shown in the drawings of the first embodiment are given the same reference numerals, and descriptions thereof are omitted.
- FIG. 7 is a diagram for explaining the timing at which the synchronization signal detection circuit 18 of the stylus pen 3 takes in the synchronization signal.
- the synchronization waveform is sampled by the synchronization signal detection circuit 18 at a constant period and one synchronization symbol (unit signal constituting the synchronization signal) indicated by H or L in the figure is acquired, 1 shown in the figure. It is desirable to sample at the center of each synchronization symbol, as in the case where the center of the synchronization symbol is the capture timing.
- the synchronization signal detection circuit 18 of the stylus pen 3 cannot know the capture timing, if the timing at which one synchronization symbol shown in the figure changes is taken as the capture timing, sampling is performed at the data change point. Since either H or L is not stable, detection may fail.
- a signal that determines the timing at which the synchronization signal detection circuit 18 of the stylus pen 3 takes in the synchronization signal is used.
- FIG. 8 is a diagram illustrating an example of a waveform of a preparation signal used in the present embodiment.
- the preparation signal used in this embodiment is a signal that determines the timing at which the synchronization signal detection circuit 18 (see FIG. 6) of the stylus pen 3 takes in the synchronization signal, This is a signal having the center (timing in terms of timing) of one synchronization symbol (unit signal constituting the synchronization signal) as the capture timing.
- the sense circuit 16 (see FIG. 6) of the stylus pen 3 receives such a preparation signal.
- the synchronization signal reception adjustment circuit 17 performs the above preparation of the sense circuit 16. Based on the output of the signal, the gain of the sense circuit 16 is set. At the same time, the synchronization signal reception adjustment circuit 17 also adjusts the capture timing of the synchronization signal detection circuit 18 based on the output of the preparation signal from the sense circuit 16.
- the synchronization signal detection circuit 18 of the stylus pen 3 can generate an appropriate capture timing based on the received preparation waveform and detect a stable synchronization signal.
- the preparation signal received by the stylus pen 3 is used for adjusting the capture timing of the synchronization signal detection circuit 18 before setting the gain of the sense circuit 16 of the stylus pen 3 based on the output of the preparation signal.
- the preparation signal received by the stylus pen 3 after setting the gain of the sense circuit 16 is used as the synchronization signal detection circuit 18. It can be used for adjusting the timing of capturing.
- the preparation signal generated by the preparation signal generation unit 8 (see FIG. 5) of the touch panel controller 4 is a period of one synchronization symbol (unit signal constituting the synchronization signal) of the synchronization signal and the synchronization signal.
- This is different from the first and second embodiments in that it is a signal including phase information.
- Other configurations are as described in the first embodiment.
- members having the same functions as those shown in the drawings of the first embodiment are given the same reference numerals, and descriptions thereof are omitted.
- FIG. 9 is a diagram illustrating an example of a waveform of a preparation signal used in the present embodiment.
- the preparation signal used in the present embodiment is a signal including information on the period of one synchronization symbol (unit signal constituting the synchronization signal) of the synchronization signal and the phase of the synchronization signal.
- the sense circuit 16 (see FIG. 6) of the stylus pen 3 receives such a preparation signal.
- the synchronization signal reception adjustment circuit 17 performs the above preparation of the sense circuit 16. Based on the output of the signal, the gain of the sense circuit 16 is set. At the same time, the synchronization signal reception adjustment circuit 17 also adjusts the capture timing of the synchronization signal detection circuit 18 based on the output of the preparation signal from the sense circuit 16.
- the synchronization signal detection circuit 18 uses the preparation signal to synchronize one synchronization symbol (synchronization signal). It is possible to set so that the synchronization signal is captured at the center (timing timing center) of the unit signal constituting the signal.
- the synchronization signal detection circuit 18 uses the preparation signal to detect the synchronization signal at a predetermined timing to detect H or L. It can be used as a criterion for determination.
- the synchronization signal detection circuit 18 of the stylus pen 3 can generate an appropriate capture timing based on the received preparation waveform and can perform the determination of H or L with higher accuracy. Detection can be performed.
- the preparation signal received by the stylus pen 3 is used to adjust the capture timing of the synchronization signal detection circuit 18 or to adjust the H or L
- the preparation signal received by the stylus pen 3 is set after the gain of the sense circuit 16 is set. It can be used for adjustment of the capture timing of the synchronization signal detection circuit 18 and determination of H or L.
- FIG. 10 is a functional block diagram showing a configuration of a mobile phone 31 (electronic device) as an example of an electronic device including the touch panel system 1 of the first embodiment.
- the mobile phone 31 includes a touch panel system 1, a display panel 22, operation keys 23, a speaker 24, a microphone 25, a camera 26, a CPU (Central Processing Unit) 27, a ROM (Read Only Memory) 28, a RAM (Random Access Memory) 29, And a display control circuit 30.
- a touch panel system 1 a display panel 22, operation keys 23, a speaker 24, a microphone 25, a camera 26, a CPU (Central Processing Unit) 27, a ROM (Read Only Memory) 28, a RAM (Random Access Memory) 29, And a display control circuit 30.
- Each component of the mobile phone 31 is connected to each other by a data bus.
- the touch panel system 1 includes the touch panel 2, the stylus pen 3, and the touch panel controller 4.
- the display panel 22 displays an image stored in the ROM 28 or RAM 29.
- the operation of the display panel 22 is controlled by the display control circuit 30.
- the display panel 22 may be superimposed on the touch panel 2 or may incorporate the touch panel 2. Note that the touch recognition signal generated by the touch recognition unit and indicating the touch position on the touch panel 2 can have the same role as the signal indicating that the operation key 23 has been operated.
- the operation key 23 accepts an input operation by the user of the mobile phone 31.
- the speaker 24 outputs sound based on, for example, music data stored in the ROM 28 or RAM 29.
- the microphone 25 receives a voice input from the user.
- the mobile phone 31 digitizes the input voice (analog data). Then, the mobile phone 31 transmits the digitized voice to a communication partner (for example, another mobile phone).
- the camera 26 shoots a subject and generates image data in response to an input operation to the operation key 23 by the user.
- the image data is stored in the ROM 28, the RAM 29, or an external memory (for example, a memory card).
- the CPU 27 comprehensively controls operations of the touch panel system 1 and the mobile phone 31.
- the CPU 27 executes various programs stored in the ROM 28, for example.
- the ROM 28 stores data in a nonvolatile manner.
- the ROM 28 is a ROM capable of writing and erasing, such as an EPROM (Erasable Programmable ROM) or a flash memory.
- the mobile phone 31 may include an interface for connecting to another electronic device by wire.
- the RAM 29 volatilely stores data generated by execution of the program by the CPU 27 or data input through the operation keys 23.
- the mobile phone 31 provided with the touch panel system 1 also has the same effect as the touch panel system 1 of the above-described embodiment.
- the mobile phone 31 as an example of an electronic device including the touch panel system 1 is a camera-equipped mobile phone or a smartphone, but the electronic device including the touch panel system 1 is not limited thereto.
- a mobile terminal device such as a tablet
- an information processing device such as a PC monitor, signage, an electronic blackboard, and an information display are also included in the electronic device including the touch panel system 1.
- the touch panel controller is a touch panel controller that outputs a synchronization signal captured by the stylus pen at a predetermined timing to the touch panel, and is a high state that serves as a reference for adjusting the reception sensitivity of the synchronization signal in the stylus pen.
- a preparation signal including a low state is generated, and the preparation signal is output to the touch panel before the timing at which the synchronization signal is output to the touch panel.
- the touch panel controller generates a preparation signal including a high state and a low state, which is a reference for adjusting the reception sensitivity of the synchronization signal in the stylus pen, and outputs the synchronization signal to the touch panel. Prior to the timing, the preparation signal is output to the touch panel.
- the stylus pen can use a preparation signal including a high state and a low state, which is a reference for adjusting the reception sensitivity of the synchronization signal output from the touch panel controller, the stylus pen can detect the synchronization signal.
- a touch panel controller that can suppress the possibility of failure can be realized.
- the preparation signal is a signal that determines a timing at which the synchronization signal is captured by the stylus pen.
- the touch panel controller serves as a reference for adjusting the reception sensitivity of the synchronization signal in the stylus pen, and the preparation signal that determines the timing at which the synchronization signal is captured in the stylus pen is applied to the touch panel. Output.
- the stylus pen can use such a preparation signal, it is possible to realize a touch panel controller that can suppress the possibility that the stylus pen fails to detect the synchronization signal.
- the preparation signal is a signal including information on the period of the unit signal constituting the synchronization signal or the phase of the synchronization signal.
- the touch panel controller serves as a reference for adjusting the reception sensitivity of the synchronization signal in the stylus pen, and determines the timing at which the synchronization signal is captured in the stylus pen,
- the preparation signal that can be used for determining the low level is output to the touch panel.
- the stylus pen can use such a preparation signal, it is possible to realize a touch panel controller that can suppress the possibility that the stylus pen fails to detect the synchronization signal.
- a touch panel system is a touch panel system including a stylus pen, a touch panel, and a touch panel controller that outputs a synchronization signal captured by the stylus pen at a predetermined timing to the touch panel.
- the controller generates a preparation signal including a high state and a low state, and outputs the preparation signal to the touch panel before the timing of outputting the synchronization signal to the touch panel, and the stylus pen receives the received stylus pen Based on the preparation signal, a synchronization signal reception adjustment circuit is provided that adjusts the reception sensitivity of the synchronization signal in the stylus pen during the reception period of the preparation signal.
- the touch panel controller generates a preparation signal including a high state and a low state, and outputs the preparation signal to the touch panel prior to the timing of outputting the synchronization signal to the touch panel.
- the stylus pen includes a synchronization signal reception adjustment circuit that adjusts the reception sensitivity of the synchronization signal in the stylus pen during the reception period of the preparation signal based on the received preparation signal.
- the stylus pen can adjust the reception sensitivity of the synchronization signal in the stylus pen during the reception period of the preparation signal based on the received preparation signal.
- a touch panel system capable of suppressing the possibility of failure in detection can be realized.
- the preparation signal is a signal that determines a timing at which the synchronization signal is captured by the stylus pen, and the synchronization signal reception adjustment circuit is in the middle of the reception period of the preparation signal.
- the receiving sensitivity of the received preparation signal and the synchronization signal may be adjusted based on the received preparation signal.
- the synchronization signal reception adjustment circuit can generate an appropriate capture timing based on the received preparation signal and detect a stable synchronization signal, so that the stylus pen can detect the synchronization signal.
- a touch panel system capable of suppressing the possibility of failure in detection can be realized.
- the preparation signal is a signal including information on a cycle of a unit signal constituting the synchronization signal or a phase of the synchronization signal.
- the reception sensitivity of the received preparation signal and the synchronization signal may be adjusted based on the received preparation signal.
- the synchronization signal reception adjustment circuit generates an appropriate capture timing based on the received preparation signal.
- the received preparation signal can also be used to determine whether the synchronization signal is high or low. Therefore, since the stable synchronization signal can be detected, a touch panel system that can suppress the possibility that the stylus pen fails to detect the synchronization signal can be realized.
- the stylus pen according to aspect 7 of the present invention is a stylus pen that captures the synchronization signal of the touch panel at a predetermined timing, receives a preparation signal at a timing before the synchronization signal, and based on the received preparation signal, A synchronization signal reception adjustment circuit is provided for adjusting the reception sensitivity of the synchronization signal during the reception period of the preparation signal.
- the synchronization signal reception that receives the preparation signal at a timing earlier than the synchronization signal and adjusts the reception sensitivity of the synchronization signal during the preparation signal reception period based on the received preparation signal.
- An adjustment circuit is provided.
- the stylus pen can adjust the reception sensitivity of the synchronization signal in the stylus pen during the reception period of the preparation signal based on the received preparation signal, the detection of the synchronization signal fails. It is possible to realize a stylus pen that can suppress the possibility of being lost.
- the synchronization signal reception adjustment circuit receives the preparation signal and the synchronization signal received based on the preparation signal received during the reception period of the preparation signal. It is preferable to adjust the sensitivity.
- the stylus pen can detect a stable synchronization signal, it is possible to realize a stylus pen that can suppress the possibility that the stylus pen fails to detect the synchronization signal. .
- the electronic device includes the touch pen, the touch panel controller, or the touch panel system.
- the present invention can be suitably used for a touch panel system including a touch panel, a touch panel controller, and a stylus pen.
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Abstract
Description
本発明の一実施形態について図1~図6に基づいて説明すれば、以下のとおりである。(タッチパネルシステム)
図1は、本実施の形態のタッチパネルシステム1の概略構成を示すブロック図である。
(タッチパネル)
図2は、タッチパネルシステム1に備えられたタッチパネル2の概略的な回路構成を示す図である。
(タッチパネルコントローラからタッチパネルに出力される信号波形)
図3は、タッチパネルコントローラからタッチパネルに出力される信号波形と、スタイラスペンのペン先を駆動させる駆動タイミングを示す信号波形とを示す図である。
(スタイラスペンが受信する信号波形)
図4は、タッチパネル2に対するスタイラスペン3の位置(スタイラスペン3とタッチパネル2のセンサ面との距離)によって、スタイラスペン3が受信する準備波形および同期波形を示す図である。
(タッチパネルコントローラ)
図5は、タッチパネルシステム1に備えられたタッチパネルコントローラ4の概略構成を示す図である。
(スタイラスペン)
本実施の形態のスタイラスペン3は、例えば、筆圧を検知するための筆圧センサを有しており、この筆圧センサからの筆圧信号は、タッチパネルコントローラ4と同期を取りながら出力されるようになっている。ただし、スタイラスペン3は、必ずしもこれに限らず、筆圧を検知するための筆圧センサを有していなくてもよい。
次に、図7および図8に基づいて、本発明の実施の形態2について説明する。本実施の形態においては、タッチパネルコントローラ4の準備信号生成部8(図5参照)で生成される準備信号が、スタイラスペン3の同期信号検出回路18(図6参照)が同期信号を取り込むタイミングを定めた信号であるという点において、上記の実施の形態1とは異なる。その他の構成については実施の形態1において説明したとおりである。説明の便宜上、上記の実施の形態1の図面に示した部材と同じ機能を有する部材については、同じ符号を付し、その説明を省略する。
次に、図9に基づいて、本発明の実施の形態3について説明する。本実施の形態においては、タッチパネルコントローラ4の準備信号生成部8(図5参照)で生成される準備信号が、同期信号の1同期シンボル(同期信号を構成する単位信号)の周期および上記同期信号の位相の情報を含む信号であるという点において、上記の実施の形態1および2とは異なる。その他の構成については実施の形態1において説明したとおりである。説明の便宜上、上記の実施の形態1の図面に示した部材と同じ機能を有する部材については、同じ符号を付し、その説明を省略する。
本発明の他の実施の形態について図10に基づいて説明すれば、以下の通りである。なお、説明の便宜上、前記実施形態にて説明した部材と同じ機能を有する部材については、同じ符号を付記し、その説明を省略する。
本発明の態様1におけるタッチパネルコントローラは、スタイラスペンによって所定のタイミングで取り込まれる同期信号をタッチパネルに出力するタッチパネルコントローラであって、上記スタイラスペンにおける上記同期信号の受信感度を調整する基準となるハイ状態とロー状態とを含む準備信号を生成し、上記同期信号を上記タッチパネルに出力するタイミングよりも先に、上記準備信号を上記タッチパネルに出力する。
2 タッチパネル
3 スタイラスペン
4 タッチパネルコントローラ
5 ドライブライン駆動回路
6 センスアンプ
7 タイミングジェネレータ
8 準備信号生成部
9 AD変換器
10 処理部
11 ペン本体
11a 把持部
12 ペン先部
12a ペン先カバー
12b ペン先軸
12c 絶縁体
12d 筆圧センサ
13 接続スイッチ
14 制御回路
15a 動作切替スイッチ
15b 動作切替スイッチ
16 センス回路
17 同期信号受信調整回路
18 同期信号検出回路
19 タイミング調整回路
20 ドライブ回路
21a 第1操作スイッチ
21b 第2操作スイッチ
31 携帯電話機(電子機器)
Cnm キャパシタ
Dn ドライブライン
Sm センスライン
Claims (5)
- スタイラスペンによって所定のタイミングで取り込まれる同期信号をタッチパネルに出力するタッチパネルコントローラであって、
上記スタイラスペンにおける上記同期信号の受信感度を調整する基準となるハイ状態とロー状態とを含む準備信号を生成し、上記同期信号を上記タッチパネルに出力するタイミングよりも先に、上記準備信号を上記タッチパネルに出力することを特徴とするタッチパネルコントローラ。 - 上記準備信号は、上記同期信号が上記スタイラスペンによって取り込まれるタイミングを定めた信号であることを特徴とする請求項1に記載のタッチパネルコントローラ。
- 上記準備信号は、上記同期信号を構成する単位信号の周期または上記同期信号の位相の情報を含む信号であることを特徴とする請求項1に記載のタッチパネルコントローラ。
- スタイラスペンと、タッチパネルと、上記スタイラスペンによって所定のタイミングで取り込まれる同期信号を上記タッチパネルに出力するタッチパネルコントローラと、を備えたタッチパネルシステムであって、
上記タッチパネルコントローラは、ハイ状態とロー状態とを含む準備信号を生成し、上記同期信号を上記タッチパネルに出力するタイミングよりも先に、上記準備信号を上記タッチパネルに出力し、
上記スタイラスペンは、受信した上記準備信号に基づいて、上記準備信号の受信期間中に、上記スタイラスペンにおける上記同期信号の受信感度を調整する同期信号受信調整回路を備えていることを特徴とするタッチパネルシステム。 - タッチパネルの同期信号を所定のタイミングで取り込むスタイラスペンであって、
上記同期信号より前のタイミングの準備信号を受信し、受信した上記準備信号に基づいて、上記準備信号の受信期間中に、上記同期信号の受信感度を調整する同期信号受信調整回路を備えていることを特徴とするスタイラスペン。
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US15/311,876 US20170108984A1 (en) | 2014-06-30 | 2015-05-19 | Touch panel controller, touch panel system, and stylus pen |
JP2016531184A JP6072989B2 (ja) | 2014-06-30 | 2015-05-19 | タッチパネルコントローラ、タッチパネルシステム、およびスタイラスペン |
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- 2015-05-19 WO PCT/JP2015/064355 patent/WO2016002371A1/ja active Application Filing
- 2015-05-19 JP JP2016531184A patent/JP6072989B2/ja not_active Expired - Fee Related
- 2015-05-19 US US15/311,876 patent/US20170108984A1/en not_active Abandoned
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JPH06236232A (ja) * | 1992-06-01 | 1994-08-23 | Summagraphics Corp | 同期信号発生器を備えたコードレスのディジタイザ |
JP2012022543A (ja) * | 2010-07-15 | 2012-02-02 | Panasonic Corp | タッチパネルシステム |
JP2013008318A (ja) * | 2011-06-27 | 2013-01-10 | Sharp Corp | 静電容量値分布検出方法、静電容量値分布検出回路、タッチセンサシステム、及び情報入出力機器 |
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US11219211B2 (en) | 2015-03-11 | 2022-01-11 | Basf Agrochemical Products B.V. | Pesticidal mixture comprising a carboxamide compound and a biopesticide |
JP6174291B1 (ja) * | 2016-09-13 | 2017-08-02 | 株式会社ワコム | アナログ回路、位置指示器、及びシステム |
WO2018051388A1 (ja) * | 2016-09-13 | 2018-03-22 | 株式会社ワコム | アナログ回路、位置指示器、及びシステム |
US10296039B2 (en) | 2016-09-13 | 2019-05-21 | Wacom Co., Ltd. | Analog circuit, position indicator, and system |
US10795402B2 (en) | 2016-09-13 | 2020-10-06 | Wacom Co., Ltd. | Analog circuit, position indicator, and system |
JP2018165990A (ja) * | 2018-06-28 | 2018-10-25 | 株式会社ワコム | スタイラス |
Also Published As
Publication number | Publication date |
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JP6072989B2 (ja) | 2017-02-01 |
JPWO2016002371A1 (ja) | 2017-04-27 |
US20170108984A1 (en) | 2017-04-20 |
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