JP2016157322A - Output device, output device system, image display system, output method, computer program, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an output device capable of improving reduced conversion accuracy, when converting an added external force into an output value and to provide an output device system, an image display system, an output method, a computer program, and a recording medium.SOLUTION: An output device 1 including a detection part which detects an external force, a conversion part which converts the value of the external force detected by the detection part on the basis of predetermined conversion information, and an output part which outputs the output value obtained by converting the value of the external force in the conversion part to an external device 2 includes a condition determination part which determines whether or not a predetermined condition relating to the updating of the conversion information is satisfied and an updating part which updates the conversion information on the basis of the output value obtained by conversion in the conversion part, after the condition determination part determines that the predetermined condition is satisfied.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an output device that outputs an output value corresponding to an external force, an output method, a computer program, and a recording medium. The present invention also relates to an output device system including the output device and an image display system.

  Conventionally, a method of outputting an output value corresponding to an external force applied to a tip portion to an external device is known. Patent Document 1 discloses an electronic pen that includes a bending member that bends in response to an external force applied to its tip, and a strain sensor that detects distortion of the bending member. The electronic pen disclosed in Patent Document 1 converts the detection result of the distortion sensor into a writing pressure value that is an output value using a predetermined mathematical expression, and outputs the converted writing pressure value to an external device. Since the electronic pen disclosed in Patent Document 1 can detect the displacement of the tip portion due to the applied external force three-dimensionally by the bending member and the strain sensor, the pen pressure value to be converted is highly accurate. be able to.

JP 2006-92410 A

  In general, sensors have a variation factor of detection accuracy. The fluctuation factors are, for example, individual differences between sensors, sensor deterioration over time, and the like. However, the electronic pen disclosed in Patent Document 1 does not take into consideration a variation factor of detection accuracy in the strain sensor. Therefore, there is a possibility that the accuracy of the pen pressure value converted by the electronic pen is affected by the variation factor.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an output device, an output device system, and an image display capable of improving reduced conversion accuracy when converting an applied external force into an output value. A system, an output method, a computer program, and a recording medium are provided.

  An output device according to the present invention includes a detection unit that detects an external force, a conversion unit that converts a value of the external force detected by the detection unit based on predetermined conversion information, and a conversion unit that converts the value of the external force. In an output device including an output unit that outputs the obtained output value to an external device, a condition determination unit that determines whether or not a predetermined condition for updating the conversion information is satisfied, and the condition determination unit satisfies the predetermined condition And an update unit that updates the conversion information based on an output value obtained by conversion by the conversion unit after determining that the conversion is satisfied.

  The output device according to the present invention determines that a storage unit that stores a reference output value to be output to the external device when a specific external force is applied to the detection unit, and the condition determination unit satisfies a predetermined condition. A division unit that divides an output value obtained by subsequent conversion by the conversion unit by a reference output value stored in the storage unit; and the update unit uses the division result of the division unit to perform the conversion It is characterized in that information is updated.

  The output device according to the present invention further includes a division result determination unit that determines whether or not the division result is within a predetermined numerical range, and the update unit includes the division result determination unit within the predetermined numerical range. If it is determined that there is, the conversion information is updated.

  The output device according to the present invention further includes a notification unit that notifies when the condition determination unit determines that the predetermined condition is satisfied, and the update unit is obtained by performing conversion at the conversion unit after the notification unit notifies. The conversion information is updated based on the output value obtained.

  In the output device according to the present invention, the conversion information includes a plurality of output values corresponding to a plurality of external force values, and a plurality of conversion values included in the conversion information based on the external force values detected by the detection unit. A selection unit that selects one or two output values from the output value is further provided, and the conversion unit converts the value of the external force based on the one or two output values selected by the selection unit. The updating unit is configured to update the plurality of output values.

  The output device according to the present invention is a pen type, and the detection unit is configured to detect an external force applied to a distal end portion of the own device.

  The output device according to the present invention further includes a posture detection unit that detects a posture of the device, and the condition determination unit determines that a predetermined condition is satisfied when the posture detection unit detects a specific posture. It is characterized by being.

  The output device according to the present invention is characterized in that the specific posture is a posture in which the tip portion is directed vertically downward.

  The output device system according to the present invention includes the above-described output device, and the output device that is open so as to be insertable from a tip portion, has a cylindrical shape having a bottom, and supports the output device in a state of being inserted. The output device is inserted into the stand and is engaged with the engaging portion when the tip is pushed to press the bottom of the stand. And an engagement detection unit that detects engagement of the engagement unit with the engaged unit. The condition determination unit is configured such that the engagement detection unit detects engagement. In this case, it is determined that a predetermined condition is satisfied.

  The output device system according to the present invention has the above-described output device and the output device open so that it can be inserted from the tip, and has a cylindrical shape having a bottom, and supplies power to the electromagnet provided at the bottom. A power supply unit, and a stand having a notification unit that notifies the output device when the power supply unit supplies power to the electromagnet, the output device further including a magnetic body, and the update unit includes the notification unit. The conversion information is updated based on an output value obtained by conversion by the conversion unit after receiving a notification from the unit.

  The image display system according to the present invention inputs the output device described above and an output value output from the output device, and draws based on the input output value and a trajectory when the tip portion contacts a specific contacted surface. And a display device that displays an image on a display screen.

  The output method according to the present invention is an output method for detecting an external force, converting a value of the detected external force based on predetermined conversion information, and outputting an output value obtained by the conversion to the outside. Determining whether or not a predetermined condition for updating is satisfied, and updating the conversion information based on an output value obtained by conversion after determining that the predetermined condition is satisfied. Features.

  A computer program according to the present invention acquires a value of an external force, converts the acquired value of the external force based on predetermined conversion information, and causes the computer to execute a process of outputting an output value obtained by the conversion In step (b), the computer determines whether or not a predetermined condition relating to the update of the conversion information is satisfied, and based on an output value obtained by conversion after determining that the predetermined condition is satisfied. And a step of updating information.

  A recording medium according to the present invention records the above-described computer program.

  According to the present invention, when the applied external force is converted into an output value, the reduced conversion accuracy can be improved.

1 is a schematic diagram illustrating a configuration of an image display system in Embodiment 1. FIG. It is a block diagram which shows the structure of a touch pen and a display apparatus. It is a conceptual diagram which shows an example of a reference | standard table. It is a conceptual diagram which shows an example of a conversion table. It is a flowchart which shows the process sequence of a touch pen when converting the value of the pressure applied to the front-end | tip part into an output value, and transmitting the converted output value to a display apparatus. It is explanatory drawing explaining the example which the conversion accuracy of the output value of a touch pen falls. It is a flowchart which shows the process sequence of a touch pen when updating a conversion table. It is explanatory drawing explaining the effect by updating a conversion table. 10 is a flowchart illustrating a processing procedure of the image display system when the touch pen in Embodiment 2 updates a conversion table. 10 is a flowchart illustrating a processing procedure of the image display system when the touch pen in Embodiment 2 updates a conversion table. It is a schematic diagram which shows the structure of the touch pen system in Embodiment 3. It is a block diagram which shows the structure of a touch pen. It is a flowchart which shows the process sequence of a touch pen when updating a conversion table. It is a schematic diagram which shows the structure of the touch pen system in Embodiment 4. It is a flowchart which shows the process sequence of a touch pen when updating a conversion table. It is a schematic diagram which shows the structure of the touch pen system in Embodiment 5. It is a block diagram which shows the structure of a stand. It is a conceptual diagram which shows an example of a switching table. It is a flowchart which shows the process sequence of a touch pen system when a touch pen updates a conversion table.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. In each of the embodiments described below, a case where the output device of the present invention is applied to a touch pen (electronic pen) will be described. For example, the output is applied to an input device such as a pen tablet provided with a sensor that detects pressure or the like. An apparatus may be applied. Further, the output device may be applied to various information processing devices such as a smartphone and a tablet terminal that include a sensor that detects illuminance, temperature, acceleration, and the like and outputs a value according to a detection result of the sensor to the outside. . That is, the output device of the present invention can be applied to any output device that outputs an output value corresponding to an applied external force to the outside.

(Embodiment 1)
FIG. 1 is a schematic diagram illustrating a configuration of an image display system according to the first embodiment. The image display system includes a touch pen 1 and a display device 2. The touch pen 1 is a pen-type output device that detects a pressure applied to the distal end portion 1 a and transmits an output value corresponding to the detected pressure to the display device 2. The case of the touch pen 1 is provided with a notification unit 15 and a button 16 to be described later. The display device 2 includes a display unit 21 that displays an image and a touch panel device 22 that controls display of the image on the display unit 21. The display device 2 acquires the coordinates of the trajectory of the touch pen 1 when touching or approaching the display surface of the display unit 21, and based on the acquired coordinates, the display unit 21 displays a drawing image representing the trajectory. To display. The display surface of the display unit 21 in the first embodiment corresponds to a contacted surface. The user of the image display system according to the first embodiment displays a drawn image representing the movement trajectory of the distal end portion 1a by moving the distal end portion 1a of the touch pen 1 in contact with or close to the display unit 21. It can be displayed on the unit 21. At this time, the touch pen 1 transmits an output value corresponding to the pressure applied to the tip portion 1a to the display device 2. The display device 2 receives the output value from the touch pen 1 and displays a drawn image in a display mode corresponding to the magnitude of the output value on the display unit 21. For example, the display device 2 displays, on the display unit 21, a drawing image having a different line width depending on the output value, such as a drawing image A in FIG. 1. The display device 2 in the first embodiment corresponds to an external device.
Note that the display device 2 only needs to display a drawn image having a display mode corresponding to the magnitude of the output value from the touch pen 1 on the display unit 21, for example, the density of the display color according to the magnitude of the output value. Different drawing images may be displayed. Further, the display device 2 may acquire the coordinates of the touch pen 1 when contacting or approaching a specific contacted surface other than the display surface of the display unit 21. For example, the display device 2 may acquire the coordinates of the touch pen 1 when the operation surface of the pen tablet is used as a contacted surface.

  FIG. 2 is a block diagram illustrating configurations of the touch pen 1 and the display device 2. The touch pen 1 includes a control unit 11, a storage unit 12, a communication unit 13, a detection unit 14, a notification unit 15, and a button 16, and each is connected via a bus. The control unit 11 includes a CPU (Central Processing Unit), an MPU (Micro Processor Unit), or the like, and controls the operation of each unit included in the touch pen 1. Specifically, the CPU or MPU of the control unit 11 controls the operation of each unit by executing a later-described control program stored in the storage unit 12.

  The storage unit 12 includes an EEPROM (Electrically Erasable and Programmable ROM: registered trademark), a flash memory, a nonvolatile memory such as an HDD (Hard Disk Drive), and a volatile memory such as an SRAM (Static RAM) and a DRAM (Dynamic RAM). Is provided. A control program for the control unit 11 to perform processing is stored in the nonvolatile memory of the storage unit 12. The control program is a computer program in which processing contents when communicating with the display device 2 and processing contents when controlling each unit included in the touch pen 1 are described. The volatile memory of the storage unit 12 temporarily stores various data generated by the control unit 11 executing the control program. In addition, the control part 11 and the memory | storage part 12 may be comprised integrally.

  The control program related to the touch pen 1 may be a copy of the control program 3a recorded on the recording medium 3 so as to be readable by the computer. The storage unit 12 stores a control program 3a read from the recording medium 3 by a reading device (not shown). The recording medium 3 is a CD (Compact Disc) -ROM, a DVD (Digital Versatile Disc) -ROM, an optical disc such as a BD (Blu-ray (registered trademark) Disc), a magnetic disc such as a flexible disc or a hard disc, a magnetic optical disc, and a semiconductor. Memory, etc. The control program stored in the storage unit 12 may be a control program transmitted to the communication unit 13 described later via an arbitrary transmission medium such as a communication network or a broadcast wave. The present invention can also be realized in the form of an information signal in which a control program is embedded in a carrier wave in electronic transmission.

  The storage unit 12 stores a reference table 121 and a conversion table 122. The reference table 121 is a table in which an output value to be output by the touch pen 1 when a specific pressure is applied to the tip portion 1a of the touch pen 1 is stored. The conversion table 122 is a table that stores values used when converting a pressure value applied to the tip 1a of the touch pen 1 into an output value. Details of the reference table 121 and the conversion table 122 will be described later.

  The communication unit 13 performs wireless communication with the display device 2 in accordance with instructions from the control unit 11. The communication unit 13 communicates with the display device 2 by, for example, wireless communication conforming to the IEEE 802.11 standard, Bluetooth (registered trademark), ZigBee (registered trademark), Z-wave (registered trademark), infrared communication, or the like. I do. The communication unit 13 may be any electromagnetic wave frequency band, standard, or the like as long as it communicates wirelessly. The communication unit 13 may communicate with the display device 2 by wire.

  The detection unit 14 is, for example, a pressure sensor having a diaphragm or the like, and detects the pressure applied to the tip 1a. For example, each time the pressure is detected, the detection unit 14 outputs a signal indicating the detected pressure value to the control unit 11.

  The notification unit 15 is a lamp such as an LED (Light Emitting Diode), for example, and is provided in the housing of the touch pen 1. The notification unit 15 is turned on or off according to an instruction from the control unit 11. In addition, the alerting | reporting part 15 may be able to be lighted in different lighting modes, such as changing a lighting color other than blinking. In the first embodiment, the notification unit 15 is mainly described as a lamp. However, the notification unit 15 may be a configuration capable of notification such as a configuration of outputting sound such as a speaker or a configuration of generating vibration.

  The button 16 is a button provided on the housing of the touch pen 1. When the button 16 is pressed, a signal indicating that the button 16 is pressed is output to the control unit 11.

  The display device 2 includes a display unit 21 and a touch panel device 22. The display unit 21 is, for example, a liquid crystal display, a plasma display, an organic EL (Electroluminescence) panel, or the like, and displays information to be notified to the user, information necessary for operation, and the like according to instructions from the touch panel device 22.

  The touch panel device 22 includes a control unit 22a, a communication unit 22b, and a coordinate acquisition unit 22c, and the control unit 22a is connected to the communication unit 22b and the coordinate acquisition unit 22c. The control unit 22a includes a CPU, an MPU, or the like, and controls the operation of each unit provided in the touch panel device 22. The control unit 22a includes an image information generation unit 22d. The image information generation unit 22d generates image information representing a drawing image based on coordinate information when the touch pen 1 is in contact with or close to the display unit 21 and output value information transmitted from the touch pen 1. To do. The control unit 22a outputs the image information generated by the image information generation unit 22d to the display unit 21, and causes the display unit 21 to display a drawing image represented by the image information. The coordinate information is information acquired by a coordinate acquisition unit 22c described later.

  The communication unit 22b performs wireless communication with the touch pen 1 in accordance with an instruction from the control unit 22a. The communication unit 22b performs communication with the touch pen 1 by, for example, wireless communication compliant with the IEEE 802.11 standard, Bluetooth, ZigBee, Z-wave, infrared communication, or the like. The communication unit 22b may be any electromagnetic wave frequency band, standard, or the like as long as it communicates wirelessly. Moreover, you may make it the communication part 22b communicate with the touch pen 1 by a wire communication.

  The coordinate acquisition unit 22 c includes a touch panel, and acquires coordinate information when the touch pen 1 contacts or approaches the display unit 21. When the touch pen 1 comes into contact with or approaches the coordinate acquisition unit 22c by various methods such as a method using an infrared light emitting element and an infrared light receiving element, a method using a transparent electrode, and a method using a resistive film. Get coordinate information at. The coordinate acquisition unit 22c outputs the acquired coordinate information to the control unit 22a.

  FIG. 3 is a conceptual diagram illustrating an example of the reference table 121. The reference table 121 stores a reference output value for each pressure value. In the reference table 121, for example, a pressure value 300g and a reference output value 2500, and a pressure value 500g and a reference output value 2700 are stored in association with each other. That is, the reference table 121 of FIG. 3 has an output value that the touch pen 1 should output when a pressure of 300 g is applied to the tip end portion 1a, and a touch pen when a pressure of 500 g is applied to the tip end portion 1a. 1 indicates that the output value to be output is 2700. The reference output value includes, for example, various statistics such as an average, a mode, and a median of output values when 300 g and 500 g of pressure are applied to the tip portions 1a of a plurality of touch pens 1 prepared as samples. Can be used.

  FIG. 4 is a conceptual diagram illustrating an example of the conversion table 122. The conversion table 122 stores an output value for each input value. The input value is a pressure value detected by the detection unit 14. The output value is a value that the touch pen 1 should output according to the value of the input value. In the first embodiment, eight input values and output values are stored in association with each other. The conversion table 122 corresponds to conversion information.

  In the image display system configured as described above, when the detection unit 14 detects the pressure value applied to the tip 1a, the touch pen 1 converts the pressure value into an output value using the conversion table 122. Then, the converted output value is transmitted to the display device 2.

  FIG. 5 is a flowchart showing a processing procedure of the touch pen 1 when the pressure value applied to the tip 1a is converted into an output value and the converted output value is transmitted to the display device 2. The control unit 11 of the touch pen 1 determines whether or not the detection unit 14 has detected a pressure (step S11). For example, the control unit 11 determines whether or not a signal representing a pressure value is input from the detection unit 14. When it determines with not detecting the pressure (S11: NO), the control part 11 does not perform the process converted into an output value, but waits for a process until a pressure is detected.

  When it determines with having detected the pressure (S11: YES), the control part 11 selects one or two output values from the conversion table 122 (step S12). For example, when the same input value as the pressure value detected by the detection unit 14 is stored in the conversion table 122, the control unit 11 selects one output value corresponding to the input value. For example, when the same input value as the pressure value is not stored in the conversion table 122, the control unit 11 selects two input values immediately before and immediately after the pressure value from the output values stored in the conversion table 122. Two output values corresponding to each value are selected. For example, when the pressure value detected by the detection unit 14 is 50 g, the control unit 11 selects an output value of 1500 from the conversion table 122. Further, for example, when the pressure value detected by the detection unit 14 is 70 g, the control unit 11 selects the output values 1500 and 1900 corresponding to the input values 50 and 100 from the conversion table 122, respectively. The control unit 11 functions as a selection unit by executing a control program in step S12.

  Next, the control unit 11 converts the pressure value detected by the detection unit 14 into an output value (step S13). For example, when there is one selected output value, the control unit 11 sets the selected output value as an output value to be converted. That is, the control unit 11 converts the pressure value into an output value by selecting an output value corresponding to the pressure value detected by the detection unit 14 from the conversion table 122 in step S12. For example, when there are two selected output values, the control unit 11 converts the pressure value by performing linear interpolation based on the following equation (1) using the two selected values. The control unit 11 functions as a conversion unit by executing the control program in step S13.

Pout = ((T2−T1) / (P2−P1)) × (Pin−P1) + T1 (1)
However,
T1 <T2
T1: Selected output value T2: Selected output value P1: Input value P2 corresponding to T1: Input value Pout corresponding to T2: Output value Pin as a conversion result: Pressure value detected by the detection unit 14

  Here, when the output value corresponding to the pressure value detected by the detection unit 14 exists in the conversion table 122, the control unit 11 sets the output value as an output value to be converted. Can be reduced. Further, the control unit 11 makes it easy to convert the value obtained by linear interpolation using the two output values selected when the output value corresponding to the pressure value does not exist in the conversion table 122 to the output value to be converted. An output value to be converted into can be obtained. Furthermore, since the control unit 11 performs the linear interpolation, it is not necessary for the touch pen 1 to store output values corresponding to all pressure values that can be detected by the detection unit 14 in the conversion table 122. The amount of area used can be reduced.

  After the process of step S13, the control unit 11 issues an instruction to the communication unit 13 and transmits the converted output value to the display device 2 (step S14). Thereafter, the control unit 11 finishes the process. The communication unit 13 corresponds to an output unit.

  The touch pen 1 can transmit an output value corresponding to the pressure applied to the tip portion 1a to the display device 2 by the processing procedure shown in FIG. However, the detection accuracy of the detection unit 14 may vary depending on the environment around the touch pen 1, deterioration over time, and the like. For this reason, the touch pen 1 cannot obtain a desired output value to be converted according to the pressure actually applied to the tip 1a, that is, the output value conversion accuracy may be reduced.

  FIG. 6 is an explanatory diagram illustrating an example in which the conversion accuracy of the output value of the touch pen 1 is lowered. FIG. 6 shows a graph of the output value converted by the touch pen 1, the horizontal axis shows the pressure applied to the tip 1 a, and the vertical axis shows the output value converted by the touch pen 1. Is shown. In FIG. 6, the thick line represents the output value converted by the touch pen 1 with no reduction in conversion accuracy, and the thin line represents the output value converted by the touch pen 1 with a decrease in conversion accuracy. As shown in FIG. 6, the output value converted when 50 g of pressure is applied to the tip 1a of the touch pen 1 with no reduction in conversion accuracy, and 100 g at the tip 1a of the touch pen 1 with reduced conversion accuracy. The output value converted when the pressure is applied is the same. That is, the touch pen 1 having a reduced conversion accuracy is subjected to a pressure of 50 g even though a pressure of 100 g is applied to the tip 1 a due to a decrease in the detection accuracy of the detection unit 14. The output value is converted to Therefore, when the user uses the touch pen 1 with reduced conversion accuracy, a desired drawing image cannot be displayed on the display device 2, and convenience is reduced. The touch pen 1 in the present application executes a process of updating the stored contents of the conversion table 122 in order to improve the reduced conversion accuracy. The processing procedure will be described below.

  FIG. 7 is a flowchart illustrating a processing procedure of the touch pen 1 when the conversion table 122 is updated. The control unit 11 of the touch pen 1 determines whether or not the power of its own device is turned on (step S21). For example, the control unit 11 determines whether or not a signal indicating power-on is input from a power button (not shown). When it is determined that the power is not turned on (S21: NO), the control unit 11 does not perform the process until the power is turned on.

  When it determines with the power supply having been turned on (S21: YES), the control part 11 determines whether the button 16 is pressed down (step S22). The control unit 11 determines whether or not a signal is input from the button 16. Here, the control part 11 determines whether the power supply of the own apparatus was turned on in the state by which the button 16 was pressed by performing the process of step S21 and step S22. When it determines with the button 16 not being pressed down (S22: NO), the control part 11 complete | finishes a process and performs the process shown in FIG.

  If it is determined that the button 16 is pressed (S22: YES), the control unit 11 reads one reference output value from the reference table 121 (step S23). Thereafter, the control unit 11 performs a notification process based on the read reference output value (step S24). For example, the control unit 11 causes the notification unit 15 to notify the tip portion 1a of the pressure value corresponding to the read reference output value. When the control unit 11 reads the reference output value of 2500 from the reference table 121 as shown in FIG. 3 in step S23, the control unit 11 instructs the notification unit 15 to apply a pressure of 300 g to the distal end portion 1a. For example, based on the instruction, the notification unit 15 repeats a lighting mode in which the light is continuously turned off for 3 seconds after being turned on three times at intervals of 0.5 seconds. The notification process may be any notification mode as long as the pressure value corresponding to the reference output value read to the user is notified.

Thereafter, the control unit 11 determines whether or not a completion operation has been accepted (step S25).
The completion operation is an operation indicating that the operation of applying pressure to the distal end portion 1a has been completed by the user, for example, an operation of pressing the button 16 once. Here, the user applies pressure to the distal end portion 1a based on the notification process. For example, when the touch pen 1 makes a notification to apply a pressure of 300 g in the notification process, the user uses a push gauge or the like to apply a pressure of 300 g to the tip 1a. Thereafter, the user performs a completion operation with 300 g of pressure applied to the tip 1a.

  When it is determined that the completion operation has not been received (S25: NO), the control unit 11 waits until the completion operation is received. That is, the control unit 11 stands by until a pressure corresponding to the notification process is applied to the tip portion 1a by the user.

  When it is determined that the completion operation has been received (S25: YES), the control unit 11 reads the output value obtained by converting the detection value of the detection unit 14 by performing the same processing as in step S12 and step S13 in FIG. Divide by the reference output value (step S26). In the following, unless otherwise specified, an output value converted by performing the same processing as Step S12 and Step S13 in FIG. 5 is referred to as a conversion value. Here, the control unit 11 calculates the difference between the converted value and the reference output value by performing the process of step S26. Moreover, the control part 11 functions as a division part by executing a control program in step S26. Thereafter, the control unit 11 temporarily stores the division result in the storage unit 12 (step S27).

  Next, the control unit 11 determines whether or not reading of all reference output values from the reference table 121 has been completed (step S28). For example, the control unit 11 determines whether or not the processing in step S23 has been performed by the number of rows in the reference table 121. If it is determined that the reading has not been completed (S28: NO), the control unit 11 returns the process to step S23. At this time, the control unit 11 reads from the reference table 121 a reference output value different from the reference output value read in the process of the previous step S23.

  When it is determined that the reading has been completed (S28: YES), the control unit 11 calculates an average value of the temporarily stored division results (step S29). Next, the control unit 11 performs an update process for updating the output value stored in the conversion table 122 using the calculated average value (step S30). In the update process, the control unit 11 stores the division result obtained by dividing each output value stored in the conversion table 122 by the calculated average value in the conversion table 122 as a new output value. The control unit 11 functions as an update unit by executing the control program in step S30. After performing the process of step S30, the controller 11 finishes the process and performs the process shown in FIG.

  The touch pen 1 can improve the reduced conversion accuracy by executing the process shown in FIG. 5 using the conversion table 122 updated by the process shown in FIG. FIG. 8 is an explanatory diagram for explaining the effect of updating the conversion table 122. FIG. 8 shows a graph of output values converted by the touch pen 1 in the same manner as in FIG. 6, and the thick and thin lines in FIG. 8 are the same as the thick and thin lines in FIG. 6, respectively. The broken line in FIG. 8 represents the output value after the conversion table 122 of the touch pen 1 having a decrease in conversion accuracy is updated by the process shown in FIG. That is, when the touch pen 1 with reduced conversion accuracy performs the process shown in FIG. 7, the output value of the thin line can be changed to the output value of the broken line, and the touch pen 1 with no decrease in conversion accuracy indicated by the thick line. The output value can be approached. Therefore, the touch pen 1 according to the first embodiment converts the pressure applied to the distal end portion 1a into an output value by updating the conversion table 122 even when, for example, the pressure detection accuracy by the detection unit 14 is reduced. In doing so, the reduced conversion accuracy can be improved.

(Embodiment 2)
In the second embodiment, an example in which the conversion table 122 is updated by performing communication between the touch pen 1 and an external device having a communication function will be described. In the following description, an example in which the external device is the display device 2 will be described. However, devices having various communication functions such as other computers and tablet terminals may be external devices. In addition, since the other configurations and functions other than the configurations and functions described below are the same as those of the first embodiment, the same reference numerals are given to the same parts, and the detailed description of the same configurations and the functions thereof are the same. Description of the effect is omitted.

  FIGS. 9 and 10 are flowcharts illustrating the processing procedure of the image display system when the touch pen 1 according to the second embodiment updates the conversion table 122. The control unit 22a of the touch panel device 22 in the display device 2 determines whether or not a start operation is accepted (step S31). The start operation is an operation for starting the update of the conversion table 122. For example, the start operation is an operation in which the user touches the button indicating the start of the update displayed on the display unit 21. The control unit 22a determines that the start operation has been received when the coordinates acquired when the user touches are included in the coordinate range of the button displayed on the display unit 21. When it determines with not accepting start operation (S31: NO), the control part 22a waits for a process until it accepts start operation.

  If it is determined that the start operation has been received (S31: YES), the control unit 22a issues an instruction to the communication unit 22b and transmits a start signal indicating the start of update of the conversion table 122 to the touch pen 1 (step S32).

  The communication unit 13 of the touch pen 1 receives the start signal transmitted from the display device 2 (step S33). Thereafter, the touch pen 1 reads one reference output value from the reference table 121 (step S34). The process of step S34 is the same process as step S23 in FIG. Next, the control unit 11 issues an instruction to the communication unit 13 and transmits a display signal to the display device 2 (step S35). The display signal is a signal representing a pressure value corresponding to the read reference output value. The control unit 11 transmits a display signal to display the pressure value on the display unit 21 of the display device 2.

  The communication unit 22b of the touch panel device 22 in the display device 2 receives the display signal (step S36). Next, the control unit 22a of the touch panel device 22 displays the pressure value included in the received display signal on the display unit 21 (step S37). The control unit 22a outputs information on the pressure value represented by the received display signal to the display unit 21, thereby causing the display unit 21 to display the pressure value. For example, when a pressure value representing 300 g is displayed in the display signal, the user uses a push gauge or the like to apply a pressure of 300 g to the tip portion 1a.

  Next, the control unit 22a determines whether or not a completion operation has been accepted (step S38). The completion operation in the second embodiment is an operation indicating that the operation of applying pressure to the distal end portion 1a is completed by the user, for example, an operation for ending the display of the pressure value displayed on the display unit 21.

  If it is determined that the completion operation has not been accepted (S38: NO), the control unit 22a waits for processing until the completion operation is accepted. On the other hand, when it is determined that the completion operation has been accepted (S38: YES), the control unit 22a issues an instruction to the communication unit 22b and transmits a completion signal indicating that the completion operation has been accepted (step S39).

  The communication unit 13 of the touch pen 1 receives the completion signal (step S40). The control unit 11 of the touch pen 1 divides the converted value by the reference output value read in step S34 (step S41). The control unit 11 functions as a division unit by executing a control program in step S41.

  Thereafter, the control unit 11 determines whether or not the division result is within a predetermined numerical range (step S42). The predetermined numerical range is, for example, 0.5 to 1.5. That is, in step S42, the control unit 11 determines whether or not the deviation between the converted value and the reference output value is normal. The control unit 11 functions as a division result determination unit by executing a control program in step S42.

  When it is determined that the division result is not within the predetermined numerical range, that is, when it is determined that the deviation is abnormal (S42: NO), the control unit 11 issues an instruction to the communication unit 13, and the display device 2 is informed of the deviation. An error signal indicating that is abnormal is transmitted (step S43), and the process ends.

The control unit 22a of the display device 2 determines whether or not the communication unit 22b has received an error signal (step S44). When it determines with having received the error signal (S44: YES), the control part 22a displays an error on the display part 21 based on the received error signal (step S45), and complete | finishes a process. For example, the error display is a display indicating that the update of the conversion table 122 is to be stopped. Here, the reason why the deviation becomes abnormal is that a pressure value different from the pressure value displayed on the display unit 21 is applied to the distal end portion 1a by the user, the detection unit 14 is broken, or the like. Can be mentioned. Therefore, the error display may be a display prompting the user to perform the start operation again, or a display notifying that the touch pen 1 may be broken.
If it is determined that an error signal has not been received (S44: NO), the process proceeds to step S51 described below.

  On the other hand, when it is determined in step S42 that the division result is within the predetermined numerical range, that is, when the deviation is normal (S42: YES), the control unit 11 temporarily stores the division result in the storage unit 12. (Step S46). Thereafter, the control unit 11 determines whether or not all the reference output values have been read from the reference table 121 (step S47). The processing in step S47 is the same as the processing in step S28 in FIG. When it is determined that the reading has not been completed (S47: NO), the control unit 11 returns the process to step S34. At this time, the control unit 11 reads from the reference table 121 a reference output value that is different from the reference output value read in the process of the previous step S34.

  When it is determined that the reading has been completed (S47: YES), the control unit 11 advances the process to step S48 and step S49. The processing in step S48 and step S49 is the same as the processing in step S29 and step S30 in FIG. After the process of step S49, the control unit 11 issues an instruction to the communication unit 13, transmits an end signal indicating that the update of the conversion table 122 is completed to the display device 2 (step S50), and ends the process.

  The control unit 22a of the display device 2 determines whether or not the communication unit 22b has received an end signal (step S51). When it determines with not having received the completion | finish signal (S51: NO), the control part 22a returns a process to step S36. On the other hand, when it determines with having received the completion | finish signal (S51: YES), the control part 22a performs the display which shows that the update of the conversion table 122 of the touch pen 1 was complete | finished on the display part 21 (step S52), and performs a process. Finish.

  With the above configuration and processing, the same effects as in the first embodiment can be obtained. Further, when the process of improving the conversion accuracy of the touch pen 1 is performed, the display device 2 can display on the display unit 21 in step S37, step S45, and step S52 in FIG. Can be improved. Moreover, since the touch pen 1 can update the conversion table 122 when the shift between the converted value and the reference output value is normal by the process of step S42 as described above, the conversion accuracy of the output value is reduced. It can improve more reliably.

(Embodiment 3)
In the third embodiment, an example will be described in which the process of updating the conversion table 122 is started when the touch pen 1 specifies its own posture and specifies that it is in a specific posture. In the following description, a touch pen system including the touch pen 1 and a stand that supports the touch pen 1 will be described. In addition, since the other configurations and operations other than the configurations and operations described below are the same as those in the first and second embodiments, the same reference numerals are given to the same parts, and the detailed description on the same configurations and The description of the function and effect is omitted.

  FIG. 11 is a schematic diagram illustrating a configuration of a touch pen system according to the third embodiment. The touch pen system according to the third embodiment includes a touch pen 1 and a stand 4 that supports the touch pen 1. The stand 4 has a cylindrical shape having a bottom, and is open so that the touch pen 1 can be inserted from the distal end portion 1a. The stand 4 is placed with the opening facing upward. FIG. 11 schematically shows the touch pen system when the touch pen 1 is supported while being inserted from the opening of the stand 4. The touch pen 1 is supported so as to stand upright in a state where the distal end portion 1 a is in contact with the bottom surface of the stand 4. That is, when the touch pen 1 is supported by the stand 4, a pressure corresponding to its own weight is applied to the distal end portion 1 a.

  FIG. 12 is a block diagram illustrating a configuration of the touch pen 1. The storage unit 12 of the touch pen 1 according to the third embodiment stores reference information 123 instead of the reference table 121 according to the first embodiment. The reference information 123 is information representing one output value that the touch pen 1 should output when a pressure equivalent to the weight of the touch pen 1 is applied to the tip 1a. The touch pen 1 according to the third embodiment includes an acceleration detection unit 17. The acceleration detection unit 17 includes, for example, various sensors such as a three-axis acceleration sensor that can detect its own acceleration. For example, when the touch pen 1 is stationary, the acceleration detection unit 17 can detect gravitational acceleration. In addition, the acceleration detection unit 17 outputs a signal representing the detected acceleration to the control unit 11. Further, the touch pen 1 includes a timer unit 18. The timer unit 18 includes, for example, a timer, a real-time clock, and the like, starts timing according to the control of the control unit 11, and gives the timing result to the control unit 11.

  The touch pen 1 configured as described above detects that the posture is supported by the stand 4 as shown in FIG. 11 based on the detection value of the acceleration detection unit 17 and starts updating the conversion table 122. The processing procedure will be described below.

FIG. 13 is a flowchart illustrating a processing procedure of the touch pen 1 when the conversion table 122 is updated. The control unit 11 of the touch pen 1 determines whether or not the posture supported by the stand 4, that is, the posture with the tip 1a facing downward is detected (step S61). For example, when the acceleration detection unit 17 detects an acceleration equivalent to the gravitational acceleration on the tip end 1a side in the axial center direction of the touch pen 1 and the acceleration in the other direction is equal to or less than a predetermined threshold, the control unit 11 Is detected. The acceleration equivalent to the gravitational acceleration is, for example, an acceleration within a range from a value that is 1 m / s ² smaller than the value of the gravitational acceleration to a value that is 1 m / s ² larger than the value of the gravitational acceleration, and the predetermined threshold is 1 m, for example. / S ² . The control unit 11 functions as an attitude detection unit by executing a control program in step S61. When it determines with not detecting the supported attitude | position (S61: NO), the control part 11 waits for a process until the said attitude | position is detected.

  When it determines with having detected the supported attitude | position (S61: YES), the control part 11 issues an instruction | indication to the time measuring part 18, and starts time measuring (step S62). Next, the control unit 11 determines whether another posture is detected (step S63). For example, the control unit 11 determines whether or not a signal representing an acceleration other than the acceleration representing the posture supported by the stand 4 is input from the acceleration detection unit 17. When it determines with having detected another attitude | position (S63: YES), the control part 11 gives the instruction | indication to the time measuring part 18, and resets time measuring (step S64). Then, the control part 11 returns a process to step S61.

  When it is determined that a different posture has not been detected (S63: NO), the control unit 11 determines whether or not a predetermined time has elapsed since the start of timing (step S65). The predetermined time is, for example, 5 seconds. When it determines with predetermined time not having passed (S65: NO), the control part 11 returns a process to step S63.

  When it is determined that the predetermined time has elapsed (S65: YES), the control unit 11 divides the converted value by the reference output value read from the storage unit 12 (step S66). Specifically, the control unit 11 reads the reference information 123 stored in the storage unit 12, and divides the converted value by the output value represented by the read reference information 123. Then, the control part 11 advances a process to step S67, and finishes a process after that. The process of step S67 is the same as the process of step S30 in FIG.

  With the configuration and processing described above, the touch pen 1 can update the conversion table 122 based on the value of its own weight without applying a specific pressure to the tip 1a by the user.

(Embodiment 4)
In the fourth embodiment, an example in which the touch pen 1 is supported in a state of being engaged with the stand 4 and updating of the conversion table 122 is started by detecting the state will be described. Since the other configurations and operations other than the configurations and operations described below are the same as those in the third embodiment, the same reference numerals are given to the same parts, and the detailed description of the same configurations and the operations thereof are the same. Description of the effect is omitted.

  FIG. 14 is a schematic diagram illustrating a configuration of a touch pen system according to the fourth embodiment. FIG. 14A schematically shows a state before the touch pen 1 is supported by the stand 4, and FIG. 14B schematically shows a state where the touch pen 1 is supported by the stand 4. The touch pen 1 according to the fourth embodiment is provided with two buttons 19. The two buttons 19 are provided at positions sandwiching the axis of the touch pen 1 so as to be pressed toward the axis. That is, when the button 19 is pressed, the touch pen 1 is formed with the recess 1b. Each button 19 is provided, for example, on the inner side of the housing of the touch pen 1 so that the button 19 is not accidentally pressed when the user holds the touch pen 1. Furthermore, each button 19 outputs a signal indicating that the button 19 has been pressed to the control unit 11 while the button 19 is being pressed.

  The stand 4 includes two convex portions 41 on the inner peripheral surface. Specifically, each of the convex portions 41 is formed on the inner peripheral surface of the stand 4 at a position where the dimension from the bottom of the stand 4 to the bottom part of the touch pen 1 is substantially equal to the dimension from the button 19 to the tip 1a. .

The user inserts the touch pen 1 into the opening of the stand 4 from the tip portion 1a, and pushes the tip portion 1a against the bottom portion of the stand 4 so that the button 19 is pushed down to the convex portion 41, and the concave portion 1b is formed. The convex part 41 engages. By engaging the concave portion 1b of the touch pen 1 and the convex portion 41 of the stand 4, the touch pen 1 is supported by the stand 4 in a state as shown in FIG. 14B. At this time, a predetermined pressure such as 300 g is applied to the distal end portion 1a. The concave portion 1b of the touch pen 1 corresponds to the engaged portion, and the convex portion 41 of the stand 4 corresponds to the engaging portion.
The reference information 123 stored in the touch pen 1 according to the fourth embodiment is information representing one output value to be output when the predetermined pressure is applied to the distal end portion 1a.

  FIG. 15 is a flowchart illustrating a processing procedure of the touch pen 1 when the conversion table 122 is updated. Note that the processing in step S72, step S74 to step S77 in FIG. 15 is the same as the processing in step S62, step S64, step S65 to step S67 in FIG. The control unit 11 of the touch pen 1 determines whether or not it is detected that the button 19 has been pressed (step S71). For example, the control unit 11 determines whether or not a signal indicating that the button 19 is pressed is input. The control unit 11 functions as an engagement detection unit by executing a control program in step S71.

  When it is determined that the button 19 has not been pressed (S71: NO), the control unit 11 waits for processing until it is detected that the button 19 has been pressed. On the other hand, when it determines with having detected that the button 19 was pressed (S71: YES), the control part 11 advances a process to step S72.

  After the process of step S72, the control unit 11 determines whether or not the button 19 is released (step S73). For example, the control unit 11 determines that the pressing is released when a signal indicating that the button 19 is pressed is not input. When it is determined that the press has been released (S73: YES), the control unit 11 proceeds to step S74, and when it is determined that the press has not been released (S73: NO), the control unit 11 performs a process at step S75. Proceed.

  With the above configuration and processing, the touch pen 1 is based on the value of pressure applied to the distal end portion 1a when the convex portion 41 of the stand 4 is engaged with the concave portion 1b formed when the button 19 is pressed. The conversion table 122 can be updated. Further, since the concave portion 1b of the touch pen 1 and the convex portion 41 of the stand 4 are engaged, a pressure higher than its own weight can be applied to the distal end portion 1a, so that the conversion accuracy can be further improved.

(Embodiment 5)
In the fifth embodiment, an example will be described in which an electromagnet is provided in the stand 4 and the magnitude of pressure applied to the tip 1a of the touch pen 1 is switched by switching the magnitude of the magnetic force generated by the electromagnet. Since the other configurations and operations other than the configurations and operations described below are the same as those in the third embodiment, the same reference numerals are given to the same parts, and the detailed description of the same configurations and the operations thereof are the same. Description of the effect is omitted.

  FIG. 16 is a schematic diagram illustrating a configuration of a touch pen system according to the fifth embodiment. In the touch pen 1 according to the fifth embodiment, a magnetic body 5 is provided in a housing. The magnetic body 5 has a magnetic body regardless of a metal such as iron or ferrite, or a non-metal. The stand 4 has an electromagnet 42 embedded at the bottom. In the touch pen system according to the fifth embodiment, the stand 4 switches the strength of attracting the magnetic body 5 by switching the magnitude of the magnetic force generated in the electromagnet 42.

  Next, the structure of the stand 4 in Embodiment 5 is demonstrated. FIG. 17 is a block diagram showing the configuration of the stand 4. The stand 4 includes a control unit 43, a storage unit 44, a communication unit 45, a power source 46, switches 47a and 47b, and resistors 48a and 48b, in addition to the electromagnet 42 described above. The control unit 43 includes, for example, an MPU, a CPU, etc., and controls the operation of each unit included in the stand 4. Specifically, the MPU or CPU of the control unit 43 controls the operation of each unit by executing a later-described control program stored in the storage unit 44.

  The storage unit 44 includes a nonvolatile memory such as an EEPROM, a flash memory, and an HDD, and a volatile memory such as an SRAM and a DRAM, and is connected to the control unit 43. The nonvolatile memory of the storage unit 44 stores a control program for the control unit 43 to perform processing. The control program is a computer program in which the contents of processing for switching the magnitude of the magnetic force generated in the electromagnet 42 are described. The volatile memory of the storage unit 44 temporarily stores various data generated by the control unit 43 executing the control program. In addition, the control part 43 and the memory | storage part 44 may be comprised integrally.

  In addition, a switching table 441 is stored in the storage unit 44. The switching table 441 is a table used when the control unit 43 switches the magnitude of the magnetic force generated by the electromagnet 42, which will be described later.

  The communication unit 45 is connected to the control unit 43 and performs wireless communication with the touch pen 1 in accordance with instructions from the control unit 43. The communication unit 45 performs communication with the touch pen 1 by wireless communication, Bluetooth, ZigBee, Z-wave, infrared communication, or the like based on the IEEE 802.11 standard, for example. The communication unit 45 is not limited to the electromagnetic wave frequency band, standard, or the like as long as it communicates wirelessly. The communication unit 45 may communicate with the touch pen 1 by wire.

  The power source 46 is a power source configured to be able to output a predetermined voltage such as 5 V. One end is grounded, and the other end is connected to the electromagnet 42 via the switches 47a and 47b and resistors 48a and 48b. Power to The power source 46 corresponds to a power feeding unit.

  The switch 47a is connected to the power source 46 and the resistor 48a, and the switch 47b is connected to the power source 46 and the resistor 48b. The control unit 43 switches the current path between the power supply 46 and the electromagnet 42 by controlling opening and closing of the switches 47a and 47b. The resistor 48a is, for example, a 16.7Ω resistor, and the resistor 48b is, for example, a 10Ω resistor.

  FIG. 18 is a conceptual diagram illustrating an example of the switching table 441. The switching table 441 stores a switch number for each pressure value. In the switching table 441, for example, the pressure value 300g and the switch number 1 and the pressure value 500g and the switch number 2 are stored in association with each other. For example, the switch number 1 represents the switch 47a, and the switch number 2 represents the switch 47b. When the controller 43 applies 300 g of pressure to the tip 1a of the touch pen 1 supported by the stand 4, the switch 47a is turned on with reference to the switching table 441, and when the pressure of 500g is applied to the tip 1a, the switching table 43 Referring to 441, the switch 47b is turned on.

  The touch pen 1 according to the fifth embodiment stores a reference table 121 similar to that of the first embodiment in the storage unit 12 instead of the reference information 123. The communication unit 13 of the touch pen 1 is configured to be able to communicate with the stand 4.

  In the touch pen system as described above, the touch pen 1 causes the stand 4 to switch the switches 47 a and 47 b on and off by communicating with the stand 4. Here, since the resistance values of the resistors 48a and 48b are different from each other, the magnitude of the magnetic force generated by the electromagnet 42 changes when the switches 47a and 47b are switched. That is, since the force that attracts the magnetic body 5 of the touch pen 1 is changed by turning on and off the switches 47a and 47b, the pressure applied to the tip 1a changes. The touch pen 1 updates the conversion table 122 by changing the force that attracts the magnetic body 5 to the stand 4. The processing procedure will be described below.

  FIG. 19 is a flowchart illustrating a processing procedure of the touch pen system when the touch pen 1 updates the conversion table 122. The control unit 11 of the touch pen 1 determines whether or not a start condition for starting the update of the conversion table 122 is satisfied (step S81). For example, the start condition may be a case where a specific posture is detected as in the third embodiment, or a case where the button 16 is pressed for a predetermined number of seconds such as 2 seconds. The control unit 11 functions as a condition determination unit by executing a control program in step S81.

  When it is determined that the start condition is not satisfied (S81: NO), the control unit 11 waits for processing until the start condition is satisfied. On the other hand, when it is determined that the start condition is satisfied (S81: YES), the control unit 11 issues an instruction to the communication unit 13 and transmits a start signal indicating the start of update of the conversion table 122 to the stand 4 (step S82). ).

  The communication unit 45 of the stand 4 receives the start signal transmitted from the touch pen 1 (step S83). The control unit 43 of the stand 4 turns on one of the switches 47a and 47b (step S84).

  Next, the control unit 43 issues an instruction to the communication unit 45, and transmits an on signal indicating that the switch is turned on to the touch pen 1 (step S85). At this time, the control unit 43 refers to the switching table 441 and executes a process of including information indicating the pressure value corresponding to the turned-on switch in the ON signal. For example, when the switch turned on in step S84 is the switch 47a, information representing a pressure value of 300 g is included in the on signal. The communication unit 45 corresponds to a notification unit.

  On the other hand, the communication unit 13 of the touch pen 1 receives the ON signal transmitted from the stand 4 (step S86). The control unit 11 of the touch pen 1 reads one reference output value corresponding to the pressure value included in the received ON signal from the reference table 121 (step S87). Then, the control part 11 performs the process of step S88 and step S89. Here, the processing of step S88 and step S89 is the same as step S26 and step S27 in FIG. Thereafter, the control unit 11 issues an instruction to the communication unit 13 and transmits a process completion signal indicating that the process of step S89 is completed to the stand 4 (step S90).

  The communication unit 45 of the stand 4 receives the processing completion signal transmitted from the touch pen 1 (step S91). Thereafter, the control unit 43 of the stand 4 determines whether or not the switch switching is completed (step S92). For example, the control unit 43 determines whether or not the switching is completed depending on whether or not the processing completion signal has been received twice and whether or not each of the switches 47a and 47b has been turned on once. If it is determined that the switching has not been completed (S92: NO), the control unit 43 returns the process to step S84. At this time, the control unit 43 turns on a switch different from the switch turned on in the process of the previous step S84 among the switches 47a and 47b.

  When it is determined that the switching has been completed (S92: YES), the control unit 43 instructs the communication unit 45 to transmit a switching completion signal indicating that the switching of the switch is completed to the touch pen 1 (step S93).

  The control unit 11 of the touch pen 1 determines whether or not the communication unit 13 has received a switching completion signal (step S94). When it determines with not having received the switch completion signal (S94: NO), the control part 11 returns a process to step S86. That is, every time the control unit 11 receives an ON signal from the stand 4, the control unit 11 executes the processes of steps S <b> 87 to S <b> 90. On the other hand, when it determines with having received the switch completion signal (S94: YES), a process is complete | finished after performing the process of step S95 and step S96. Here, the processing in step S95 and step S96 is the same as that in step S29 and step S30 in FIG.

  With the above configuration and processing, the touch pen 1 updates the conversion table 122 based on the value of the external force applied to the distal end portion 1a when the magnetic body 5 is attracted by the electromagnet 42 provided on the stand 4, for example. can do.

  In the first to fifth embodiments, it has been described that the conversion accuracy of the output value in the touch pen 1 can be improved, but the conversion accuracy can be improved, but it can also be used for other purposes. For example, in the manufacturing process of the touch pen 1, the process of updating the conversion table 122 as described above may be performed in order to correct the variation in detection accuracy of the sensor used in the detection unit 14.

  In addition, it should be understood that the embodiment disclosed this time is illustrative in all respects and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the meanings described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims. Further, the technical features described in the above embodiments of the present invention can be combined with each other to form a new technical plan.

  In Embodiment 1 of the present invention, a detection unit (14) that detects an external force, and a conversion unit (11) that converts the value of the external force detected by the detection unit (14) based on predetermined conversion information (122). And an output device (1) that outputs an output value obtained by converting the value of the external force by the converter (11) to the external device (2). In the output device (1), the conversion information (122 ) And a condition determination unit (11) that determines whether or not a predetermined condition related to the update is satisfied, and after the condition determination unit (11) determines that the predetermined condition is satisfied, the conversion unit (11) performs conversion. And an update unit (11) for updating the conversion information (11) based on the output value.

  In this invention, a detection part (14) detects the external force applied to the own apparatus. The conversion unit (11) converts the value of the external force detected by the detection unit (14) based on predetermined conversion information (122). The output unit (11) outputs an output value obtained by converting the value of the external force by the conversion unit to the external device (2). The condition determination unit (11) determines whether or not a predetermined condition relating to the update of the conversion information (122) is satisfied. The update unit (11) updates the conversion information (122) based on the output value obtained by the conversion unit (11) after the condition determination unit (11) determines that the predetermined condition is satisfied. . Therefore, the output device (1) can update the conversion information (122) based on the determination result of the condition determination unit (11). Therefore, for example, even when the detection accuracy of the external force by the detection unit (14) decreases and the conversion accuracy when converting the applied external force into an output value decreases, by updating the conversion information (122) The reduced conversion accuracy can be improved.

  In Embodiment 2 of the present invention, a storage unit (12) that stores a reference output value to be output to the external device (2) when a specific external force is applied to the detection unit (14), and the condition The division unit (11) that divides the output value obtained by conversion by the conversion unit (11) by the reference output value stored in the storage unit (12) after the determination unit (11) determines that the predetermined condition is satisfied. 11), and the update unit (11) updates the conversion information (122) using the division result of the division unit (11).

  In the present invention, the storage unit (12) stores the reference output value to be output to the external device (2) when a specific external force is applied to the detection unit (14). That is, the output device (1) stores an output value serving as a reference to be converted when a specific external force is applied. The division unit (11) uses the reference output value stored in the storage unit (12) as the output value obtained by converting the conversion unit (11) after the condition determination unit (11) determines that the predetermined condition is satisfied. Divide by. The update unit (11) updates the conversion information (122) using the division result of the division unit (11). Therefore, for example, the division unit (11) can calculate the ratio of the output value converted by the conversion unit (11) to the reference output value when the specific external force is applied to the detection unit (14). . The ratio represents a difference between the output value converted by the conversion unit (11) and the reference output value. Moreover, the update part (11) can update the conversion information (122) so that the shift | offset | difference represented by the said ratio may be reduced.

  In Embodiment 3 of this invention, the division result determination part (11) which determines whether the said division result is in a predetermined numerical range is further provided, The said update part (11) is the said division result determination part. When it is determined that (11) is within a predetermined numerical range, the conversion information (122) is updated.

  In the present invention, the division result determination unit (11) determines whether the division result by the division unit (11) is within a predetermined numerical range. The update unit (11) updates the conversion information (122) when the division result determination unit (11) determines that it is within a predetermined numerical range. In the output device (1), for example, when the division result is not within a predetermined numerical range, an external force different from the external force corresponding to the reference output value is applied by the user, and the detection unit (14) fails. Can be determined. Therefore, since the output device (1) can update the conversion information (122) when the specific external force is applied, it is possible to more reliably improve the decrease in the conversion accuracy of the output value.

  In Embodiment 4 of this invention, it further has the alerting | reporting part (15) notified when the said condition determination part (11) determines with satisfy | filling predetermined conditions, The said update part (11) is the said alerting | reporting part (15). ), The conversion information (122) is updated based on an output value obtained by conversion by the conversion unit (11).

  In this invention, an alerting | reporting part (15) alert | reports, when it determines with the condition determination part (11) satisfy | filling predetermined conditions. The update unit (11) updates the conversion information (122) based on the output value obtained by the conversion by the conversion unit (11) after the notification unit (15) notifies. Therefore, for example, the output device (1) can notify the user that a specific external force is applied by the notification unit (15), and the conversion information is based on the specific external force applied by the user. (122) can be updated.

  In Embodiment 5 of the present invention, the conversion information (122) includes a plurality of output values corresponding to a plurality of external force values, respectively, and based on the external force values detected by the detection unit (14), It further includes a selection unit (11) that selects one or two output values from a plurality of output values included in the conversion information (122), and the conversion unit (11) is the 1 selected by the selection unit (11). The external force value is converted based on one or two output values, and the updating unit (11) updates the plurality of output values.

In the present invention, the conversion information (122) includes a plurality of output values corresponding to a plurality of external force values. The selection unit (11) selects one or two output values from a plurality of output values included in the conversion information (122) based on the value of the external force detected by the detection unit (14). The conversion unit (11) converts the value of the external force based on the one or two output values. Therefore, for example, when there is an output value corresponding to the value of the external force detected by the detection unit (14), the output device (1) sets the output value as an output value to be converted. Can be reduced. In addition, for example, when the output value corresponding to the value of the external force is not included in the conversion information (122), the output device (1) performs linear interpolation using two output values included in the conversion information (122). By making the value an output value to be converted, an output value to be converted can be easily obtained. Furthermore, since the output device (1) does not need to store the output values corresponding to all the values of the external force that can be detected by the detection unit (14) as the output values to be converted by performing the linear interpolation, the storage unit The amount of use of the storage area in (12) can be reduced.
The updating unit (11) updates a plurality of output values included in the conversion information (122). Therefore, the conversion unit (11) can convert the value of the external force detected by the detection unit (14) based on the output value updated to improve the conversion accuracy. Therefore, the output device (1) can improve the reduced conversion accuracy even when the conversion accuracy when converting the applied external force into an output value is reduced.

  In Embodiment 6 of the present invention, it is a pen type, and the detection unit (14) is configured to detect an external force applied to the front end (1a) of the device itself.

  In the present invention, the output device (1) is a pen type. Moreover, a detection part (14) detects the external force applied to the front-end | tip part (1a) of an own apparatus. Therefore, the output device (1) can be applied to, for example, a touch pen used when displaying a drawing image on the display screen of the display device (2).

  In the seventh embodiment of the present invention, the apparatus further includes an attitude detection unit (11) for detecting the attitude of the own device, and the condition determination unit (11) is configured such that the attitude detection unit (11) detects a specific attitude. It is determined that the predetermined condition is satisfied.

  In the present invention, the posture detection unit (11) detects the posture of the device itself. The condition determination unit (11) determines that the predetermined condition is satisfied when the posture detection unit (11) specifies a specific posture. Therefore, the output device (1) can determine the timing for updating the conversion information (122) according to the posture of the own device.

  In Embodiment 8 of the present invention, the specific posture is a posture in which the tip end portion (1a) is directed downward in the vertical direction.

  In the present invention, the output device (1) can update the conversion information (122) when the device is in a posture in which the tip portion (1a) is directed downward in the vertical direction. For example, when the output device (1) is inserted from the tip (1a) into a cylindrical stand (4) having a bottom that opens upward, the tip (1a) has a posture in which the tip (1a) faces downward in a substantially vertical direction. In addition, a pressure corresponding to its own weight is applied from the bottom of the stand (4) to the tip (1a). In this case, the output device (1) can update the conversion information (122) based on the value of its own weight without applying a specific external force.

  In Embodiment 9 of the present invention, the output device (1) according to any one of Embodiments 6 to 8 and the output device (1) are opened so as to be insertable from the distal end portion (1a). And a stand (4) which has a cylindrical shape with a bottom and is provided with an engagement portion (41) for supporting the output device (1) in a state in which the output device (1) is inserted, and the output device (1) The engaged portion (1b) which is inserted into the stand (4) and is engaged with the engaging portion (41) when the distal end portion (1a) is pushed so as to press the bottom portion of the stand. And an engagement detection part (11) for detecting engagement of the engagement part (41) with the engaged part (1b), wherein the condition determination part (11) It is characterized in that when the detection unit (11) detects engagement, it is determined that a predetermined condition is satisfied.

  In this invention, the output apparatus (1) as described in any one of Embodiment 6 to 8 and the stand (4) of the said output apparatus (1) are provided. In the stand (4) of Embodiment 8, the output device (1) is open so as to be insertable from the tip (1a), has a cylindrical shape with a bottom, and the output device (1) is inserted. The engaging part (41) to support is provided inside. When the output device (1) is inserted into the stand (4) and the front end portion (1a) of the own device is pushed so as to press the bottom of the stand, the output device (1) is engaged with the engaged portion (1b). Engage with the part (41). The output device (1) detects the engagement of the engaging portion (41) with the engaged portion (1b) by the engagement detecting portion (11). The condition determination unit (11) of the output device (1) determines that the predetermined condition is satisfied when the engagement detection unit (11) detects engagement. Accordingly, the output device (1) converts the conversion information (based on the value of the external force applied to the tip portion (1a) when the engaging portion (41) is engaged with the engaged portion (1b) of its own device. 122) can be updated.

  In Embodiment 10 of the present invention, the output device (1) according to any one of Embodiments 6 to 8 and the output device (1) are opened so as to be insertable from the distal end portion (1a). The bottom of the electromagnet (42), the power supply unit (46) for supplying power to the electromagnet (42), and the power supply unit (46) for supplying power to the electromagnet (42). A stand (4) having a notification unit (45) for notifying the output device (1) when the output device (1) is present, the output device (1) further comprising a magnetic body (5), and the updating unit (11) Is configured to update the conversion information (122) based on the output value obtained by the conversion by the conversion unit (11) after receiving the notification from the notification unit (45). And

  In this invention, the output apparatus (1) and the stand (4) as described in any one of Embodiment 6-8 are provided. The stand (4) according to the tenth embodiment has an output device (1) that is open so that the output device (1) can be inserted from the distal end (1a), has a cylindrical shape with a bottom, A power supply unit (46) that supplies power to the electromagnet (42) and a notification unit (45) that notifies the output device (1) when the power supply unit (46) supplies power to the electromagnet (42). The output device (1) has a magnetic body (5). Further, the update unit (11) of the output device (1) converts based on the output value obtained by conversion by the conversion unit (11) after receiving the notification from the notification unit (45) of the stand (4). Information (122) is updated. Therefore, for example, the output device (1) has the value of the external force applied to the tip (1a) when the magnetic body (5) of the device is attracted by the electromagnet (42) provided on the stand (4). Based on this, the conversion information (122) can be updated.

  In Embodiment 11 of the present invention, the output device (1) according to any one of Embodiments 6 to 8 and the output value output by the output device (1) are input, and the input output value And a display device (2) for displaying on the display screen a drawing image (A) based on a locus when the tip (1a) contacts a specific contacted surface.

  In this invention, the output apparatus (1) and display apparatus (2) as described in any one of Embodiment 6-8 are provided. The display device (2) receives the output value output from the output device (1), and the locus when the input output value and the tip (1a) of the output device (1) are in contact with a specific contacted surface. A drawing image (A) based on the above is displayed on the display screen. Therefore, the display device (2) can draw the drawn image (A) based on the output value output from the output device (1) that can improve the reduced conversion accuracy when converting the applied external force into the output value. ) Can be displayed on the display screen.

  In Embodiment 12 of the present invention, in the output method of detecting an external force, converting the detected external force value based on predetermined conversion information (122), and outputting the output value obtained by the conversion to the outside, Based on a step of determining whether or not a predetermined condition relating to the update of the conversion information (122) is satisfied, and an output value obtained by conversion after determining that the predetermined condition is satisfied, the conversion information (122 ) Is updated.

  In the present invention, the output method includes a step of determining whether or not a predetermined condition relating to the update of the conversion information (122) is satisfied. The output method includes a step of updating the conversion information (122) based on an output value obtained by conversion after it is determined that the predetermined condition is satisfied. Therefore, the output method according to the present invention can update the conversion information (122) when a predetermined condition is satisfied. Therefore, for example, even when the detection accuracy of the external force is reduced and the conversion accuracy when the applied external force is converted into an output value is reduced, the reduced conversion accuracy is obtained by updating the conversion information (122). Can be improved.

  In the embodiment 13 of the present invention, the process of acquiring the value of the external force, converting the acquired value of the external force based on the predetermined conversion information (122), and outputting the output value obtained by the conversion is performed on the computer. In the computer program to be executed, the computer determines whether or not a predetermined condition relating to the update of the conversion information (122) is satisfied, and an output obtained by converting after determining that the predetermined condition is satisfied And updating the conversion information (122) based on the value.

  In the present invention, the computer determines whether or not a predetermined condition relating to the update of the conversion information (122) is satisfied. The computer updates the conversion information (122) based on the output value obtained by conversion after determining that the predetermined condition is satisfied. Therefore, the computer can update the conversion information (122) when the predetermined condition is satisfied. Therefore, for example, even when the detection accuracy of the external force is reduced and the conversion accuracy when the applied external force is converted into an output value is reduced, the reduced conversion accuracy is obtained by updating the conversion information (122). Can be improved.

  Embodiment 14 of the present invention is characterized in that the computer program (3a) described in Embodiment 13 is recorded.

  In the present invention, the above-described computer program (3a) is recorded on the recording medium (3). The computer reads the computer program (3a) from the recording medium (3), and the output device (1) and the output method described above are realized by the computer.

DESCRIPTION OF SYMBOLS 1 Touch pen 1a Tip part 1b Recessed part 2 Display apparatus 3 Recording medium 3a Computer program 4 Stand 5 Magnetic body 11 Control part 12 Storage part 121 Reference table 122 Conversion table 13 Communication part 14 Detection part 15 Notification part 16 Button 17 Acceleration detection part 18 Timekeeping Unit 19 Button 21 Display unit 22 Touch panel device 22a Control unit 22b Communication unit 22c Coordinate acquisition unit 22d Image information generation unit 41 Protrusion unit 42 Electromagnet 43 Control unit 44 Storage unit 45 Communication unit 46 Power supply 47a, 47b Switch 48a, 48b Resistance

Claims (14)

A detection unit that detects an external force, a conversion unit that converts the value of the external force detected by the detection unit based on predetermined conversion information, and an output value obtained by converting the value of the external force by the conversion unit In an output device comprising an output unit that outputs to
A condition determination unit that determines whether or not a predetermined condition relating to the update of the conversion information is satisfied;
An output device comprising: an update unit that updates the conversion information based on an output value obtained by conversion by the conversion unit after the condition determination unit determines that the predetermined condition is satisfied. A storage unit for storing a reference output value to be output to the external device when a specific external force is applied to the detection unit;
A division unit that divides the output value obtained by conversion by the conversion unit after determining that the condition determination unit satisfies a predetermined condition by a reference output value stored in the storage unit;
The output device according to claim 1, wherein the update unit is configured to update the conversion information using a division result of the division unit. A division result determination unit for determining whether or not the division result is within a predetermined numerical range;
The output device according to claim 2, wherein the updating unit updates the conversion information when the division result determining unit determines that the division result is within a predetermined numerical range. A notification section for notifying when the condition determination section determines that the predetermined condition is satisfied;
4. The update unit according to claim 1, wherein the update unit updates the conversion information based on an output value obtained by conversion by the conversion unit after the notification unit notifies. The output device according to any one of the above. The conversion information includes a plurality of output values corresponding to a plurality of external force values,
A selection unit that selects one or two output values from a plurality of output values included in the conversion information based on the value of the external force detected by the detection unit;
The conversion unit is configured to convert the value of the external force based on one or two output values selected by the selection unit,
The output device according to any one of claims 1 to 4, wherein the update unit updates the plurality of output values. Is a pen type,
The output device according to any one of claims 1 to 5, wherein the detection unit is configured to detect an external force applied to a tip portion of the device itself. It further includes a posture detection unit that detects the posture of the device itself,
The output device according to claim 6, wherein the condition determination unit determines that a predetermined condition is satisfied when the posture detection unit detects a specific posture. The output device according to claim 7, wherein the specific posture is a posture in which the tip end portion is directed vertically downward. An output device according to any one of claims 6 to 8,
The output device is open so as to be insertable from a tip portion, has a cylindrical shape with a bottom, and includes a stand provided inside with an engaging portion that supports the output device in a inserted state,
The output device is
An engaged portion that is inserted into the stand and is engaged with the engaging portion when the tip is pushed so as to press the bottom of the stand;
An engagement detection unit that detects engagement of the engagement unit with the engaged unit;
The output device system, wherein the condition determination unit determines that a predetermined condition is satisfied when the engagement detection unit detects engagement. An output device according to any one of claims 6 to 8,
The output device is open so that it can be inserted from the tip, has a cylindrical shape with a bottom, an electromagnet provided at the bottom, a power feeding unit that feeds power to the electromagnet, and the power feeding unit feeds the electromagnet A stand having a notification unit for notifying the output device in case,
The output device further includes a magnetic body,
The output unit system, wherein the update unit updates the conversion information based on an output value obtained by conversion by the conversion unit after receiving the notification from the notification unit. An output device according to any one of claims 6 to 8,
A display device configured to input an output value output from the output device and display a drawing image based on the input output value and a trajectory when the tip is in contact with a specific contacted surface on a display screen. Image display system. In an output method for detecting an external force, converting the detected external force value based on predetermined conversion information, and outputting the output value obtained by conversion to the outside,
Determining whether or not a predetermined condition relating to the update of the conversion information is satisfied;
And updating the conversion information based on an output value obtained by conversion after it is determined that the predetermined condition is satisfied. In a computer program for acquiring an external force value, converting the acquired external force value based on predetermined conversion information, and causing a computer to execute a process of outputting an output value obtained by conversion,
In the computer,
Determining whether or not a predetermined condition relating to the update of the conversion information is satisfied;
And a step of updating the conversion information based on an output value obtained by conversion after it is determined that the predetermined condition is satisfied.   14. A computer-readable recording medium in which the computer program according to claim 13 is recorded.

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