JP2012226478A - Portable information terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable information terminal which can give a desired tactile feel corresponding to vibration information without being influenced by an individual difference, secular changes, or the like.SOLUTION: A portable information terminal 10 includes: a touch sensor 101; a vibration generating unit 106 for vibrating a touch surface 101a of the touch sensor 101 on the basis of vibration information; a storage unit 107 for storing a vibration reference value; and a control unit 105 for generating a vibration to the touch surface 101a by the vibration generating unit 106. The control unit 105 produces correction information of the vibration information by using the vibration reference value, and, when the touch sensor 101 receives an input, corrects the vibration information by the correction information to generate a vibration to the touch surface 101a by the vibration generating unit 106 on the basis of the corrected vibration information.

Description

  The present invention relates to a portable information terminal that receives an input to a touch sensor and generates vibration.

  In recent years, portable information terminals having a touch sensor such as a touch panel or a touch switch that accepts an input by an operator are widely used. Various types of touch sensors such as a resistive film type, a capacitance type, and an optical type are known. However, any type of touch sensor accepts a touch input by a finger or a stylus pen, and the touch sensor itself is not physically displaced like a push button switch even when touched.

  As described above, even when the touch sensor is touched, the touch sensor itself is not physically displaced, so that the operator cannot obtain feedback for the input even if the input is accepted. For this reason, the operator is likely to repeatedly input such as touching the same position many times, and may stress the operator. As a technique for preventing such repeated input, a technique has been proposed in which when an operator operates a touch sensor, the touch surface is vibrated to present a tactile sensation to the operator (for example, Patent Document 1). .

Japanese Patent No. 4633183

  If a technique for presenting a tactile sensation as disclosed in Patent Document 1 is used, the operator feels the touch of the surface of an object displayed on the Web screen in a pseudo manner while the Web browser is activated on the portable information terminal. It is possible to make it.

  However, even if the portable information terminal is vibrated with the same vibration information, the generated vibration may differ due to individual differences at the time of shipment, aging, or the like. For this reason, even if vibration information is set for image data or the like on the Web screen, a desired tactile sensation may not be presented to the operator.

  Accordingly, an object of the present invention made in view of such a point is to provide a portable information terminal that can present a desired tactile sensation corresponding to vibration information without being influenced by individual differences or aging.

The invention of the portable information terminal according to the first aspect for achieving the above object is as follows:
A touch sensor;
A vibration generating unit that vibrates the touch surface of the touch sensor based on vibration information;
A storage unit for storing a vibration reference value;
A control unit that generates vibration on the touch surface by the vibration generation unit,
The controller is
Generating correction information of the vibration information using the vibration reference value;
When the touch sensor receives an input, the vibration information is corrected by the correction information, and the vibration generated by the vibration generating unit is generated by the vibration information corrected.

The invention according to the second aspect is the portable information terminal according to the first aspect,
A tactile output measuring unit for measuring vibration on the touch surface;
The controller is
A correction coefficient of the vibration information is obtained based on the vibration reference value and a measurement value output from the tactile output measurement unit when the vibration generation unit generates vibration based on an evaluation input signal. To do.

Furthermore, the invention according to the third aspect is the portable information terminal according to the first or second aspect,
And a receiving unit that receives vibration information.

  According to the present invention, it is possible to provide a portable information terminal capable of presenting a desired tactile sensation corresponding to vibration information without being affected by individual differences or secular changes.

It is explanatory drawing of operation | movement of the tactile-service system provided with the portable information terminal which concerns on one embodiment of this invention. It is a sequence diagram which shows the operation | movement of FIG. It is a functional block diagram which shows the structure of the principal part of the portable information terminal of FIG. It is a block diagram which shows an example of the mounting structure of the portable information terminal of FIG. It is a functional block diagram which shows the structure of the principal part of the reference | standard tactile signal management server of FIG. It is a flowchart which shows the process of the portable information terminal in the operation | movement of FIG. FIG. 7 is a diagram illustrating an example of an image displayed on the display unit of the portable information terminal in the process of FIG. 6. It is explanatory drawing of the evaluation input signal group of the capability evaluation which the portable information terminal of FIG. 1 performs.

  Hereinafter, an embodiment of a portable information terminal according to the present invention will be described with reference to the drawings.

  FIG. 1 is an explanatory diagram of a tactile service system 1 including a portable information terminal according to the present embodiment. The tactile service system 1 shown in FIG. 1 includes a mobile information terminal 10a of a terminal type “type A”, a mobile information terminal 10b of a terminal type “type B”, radio base stations 15a and 15b, a Web server 20, and a reference. And a tactile signal management server 30. The radio base stations 15 a and 15 b, the web server 20, and the reference tactile signal management server 30 are connected via a network 40.

  FIG. 2 is a sequence diagram showing the operation of FIG. With reference to FIG. 2, the outline | summary of operation | movement of the haptic service system 1 shown in FIG. 1 is demonstrated. Since the portable information terminal 10a and the portable information terminal 10b shown in FIG. 1 can have the same configuration and operation, they will be referred to as the portable information terminal 10 in the following description. The Web server 20 stores in advance Web page information in which display information such as image data, image information, or character string data is associated with vibration information. First, the portable information terminal 10 transmits an access request for web page information to the web server 20 (step 1). When receiving this access request from the portable information terminal 10, the Web server 20 transmits Web page information including the image data A (display information) and the tactile number “m” (vibration information) to the portable information terminal 10 ( Step 2).

  The portable information terminal 10 stores a plurality of tactile signals and stores each tactile signal in association with a tactile number. The tactile signal is, for example, a signal such as voltage, current, amplitude, or frequency, and is a signal that defines a vibration pattern. Furthermore, the portable information terminal 10 performs a tactile output capability evaluation and stores an evaluation result group obtained by the capability evaluation. After step 2, the mobile information terminal 10 determines whether or not the tactile number “m” included in the Web page information acquired from the Web server 20 is registered in the mobile information terminal 10.

  When the tactile number “m” included in the Web page information is registered in the portable information terminal 10, the portable information terminal 10 sends a tactile signal “S (m)” (vibration information) corresponding to the tactile number “m”. The read tactile signal “S (m)” is corrected based on this evaluation result group. Thereafter, the portable information terminal 10 displays the image data A, generates vibration based on the corrected tactile signal “Srev” (vibration information), and presents a tactile sensation to the operator.

  On the other hand, when the tactile number “m” included in the Web page information is not registered in the portable information terminal 10, the portable information terminal 10 acquires the tactile signal “S (m)” corresponding to the tactile number “m”. Therefore, the terminal type information “type B” and the tactile number “m” are transmitted to the reference tactile signal management server 30 (step 3).

  The reference tactile signal management server 30 stores in advance a plurality of terminal type information and a plurality of tactile numbers, and stores a plurality of tactile signals in association with the terminal type information and the tactile number, respectively. After step 3, when receiving the terminal type information “type B” and the tactile number “m” from the portable information terminal 10, the reference tactile signal management server 30 corresponds to the terminal type information “type B” and the tactile number “m”. The tactile signal “S (m)” is read out. Thereafter, the reference tactile signal management server 30 associates the terminal type information “type B”, the tactile number “m”, and the tactile signal “S (m)” and transmits them to the portable information terminal 10 (step 4).

  After step 4, the portable information terminal 10 reads the evaluation result group and corrects the haptic signal “S (m)” received from the reference haptic signal management server 30 based on the evaluation result group. Thereafter, the portable information terminal 10 displays the image data A, generates vibration based on the corrected tactile signal “Srev”, and presents a tactile sensation to the operator.

  Next, with reference to FIGS. 3 to 5, the configuration of the portable information terminal 10 and the reference tactile signal management server 30 constituting the tactile service system 1 will be described. FIG. 3 is a functional block diagram illustrating a configuration of a main part of the portable information terminal 10. The portable information terminal 10 includes a touch sensor 101, an imaging unit 102, a display unit 103, a transmission / reception unit 104, a control unit 105, a vibration generation unit 106, a storage unit 107, and a tactile output measurement unit 108. .

  The touch sensor 101 is disposed on the front surface of the display unit 103, and detects the position of a touch input on the touch surface when an operator's finger or the like touches the touch surface of the touch sensor 101. The touch sensor 101 is composed of, for example, a resistive film type, a capacitance type, an optical type touch panel, a touch switch, or the like.

  The imaging unit 102 captures an image of an external object or the like according to the operation of the operator, and acquires image data.

  The display unit 103 displays images, characters, and the like. The display unit 103 is configured using, for example, a liquid crystal display panel or an organic EL display panel.

  The transmission / reception unit 104 transmits and receives signals between the Web server 20 and the reference tactile signal management server 30 via the external network 40 wirelessly.

  The vibration generation unit 106 is configured using a piezoelectric vibrator or the like, and generates vibration on the touch surface of the touch sensor 101 or the casing of the portable information terminal 10, so that an operator's finger or the like that is in contact with the touch surface The tactile sensation is stimulated, thereby presenting a tactile sensation.

  The storage unit 107 stores a program executed by a central processing unit (not shown) and has a tactile information database 114. The tactile information database 114 stores a plurality of tactile signals in association with tactile numbers, and stores an evaluation input signal group used for evaluating the tactile output ability and an evaluation result group obtained by the ability evaluation. The tactile signal is, for example, a signal such as voltage, current, amplitude, or frequency, and is a signal that defines a vibration pattern.

  When the vibration generation unit 106 generates vibration on the touch surface of the touch sensor 101 or the casing of the portable information terminal 10, the tactile output measurement unit 108 measures a tactile output such as voltage, current, or frequency. The tactile output measuring unit 108 is constituted by, for example, a piezoelectric element or a strain gauge sensor.

  The control unit 105 is realized by, for example, a central processing unit (CPU) (not shown) executing a program stored in the storage unit 107. The control unit 105 controls the touch sensor 101, the imaging unit 102, the display unit 103, the transmission / reception unit 104, the vibration generation unit 106, the storage unit 107, and the tactile output measurement unit 108. Further, the control unit 105 has functions of a Web screen configuration unit 110, a Web page analysis unit 111, a vibration information conversion unit 112, and a vibration information correction unit 113. Further, the control unit 105 uses the vibration generation unit 106 and the tactile output measurement unit 108 to generate vibration in response to a call received during the manner mode, for example, or during the test mode. Perform the ability evaluation when you Then, the control unit 105 registers an evaluation result group obtained by ability evaluation in the tactile information database 114.

  The web screen configuration unit 110 of the control unit 105 configures a web screen to be displayed on the display unit 103 based on display information such as image data, image information, or character string data included in the web page information received from the web server 20. To do. Here, the image information is information such as a URL of image data, for example.

  The web page analysis unit 111 of the control unit 105 analyzes web page information received from the web server 20. Specifically, the Web page analysis unit 111 determines whether or not the tactile number is included in the Web page information, and determines whether or not the tactile number included in the Web page information is registered in the tactile information database 114. I do.

  When the web page analysis unit 111 determines that the tactile number included in the web page information is registered in the tactile information database 114, the vibration information conversion unit 112 of the control unit 105 corresponds to the tactile number from the tactile information database 114. Read the tactile signal.

  The vibration information correction unit 113 of the control unit 105 reads out the evaluation result group from the tactile information database 114, and corrects the tactile signal read out from the tactile information database 114 by the vibration information conversion unit 112 with this evaluation result group. This correction process will be described in detail later.

  FIG. 4 is a configuration diagram showing an example of a mounting structure of the portable information terminal 10 of FIG. 4A is a cross-sectional view of a main part, and FIG. 4B is a plan view of the main part. The display unit 103 is housed and held in the housing 120. The touch sensor 101 is held on the display unit 103 via insulators 121 provided at four corners outside the display area A of the display unit 103 indicated by a two-dot chain line in FIG.

  The casing 120 is provided with an upper cover 122 so as to cover the touch surface 101 a of the touch sensor 101 outside the display area A of the display unit 103, and an elastic member is provided between the upper cover 122 and the touch sensor 101. An insulator 123 made of

  Further, on the back surface of the touch sensor 101, a vibration generating unit 106 made of a piezoelectric element for vibrating the touch sensor 101 is provided in the vicinity of two opposing sides by bonding or the like. The touch sensor 101 is vibrated by the vibration generating unit 106 to vibrate the touch surface 101a. Note that in FIG. 4B, the housing 120, the upper cover 122, and the insulator 123 illustrated in FIG. 4A are not illustrated.

  The tactile output measuring unit 108 is made of a piezoelectric element, and is provided on the surface of the touch sensor 101 by adhesion or the like in the vicinity of one side covered with the upper cover 122. When vibration is generated on the touch surface 101a of the touch sensor 101 by the vibration generation unit 106, the tactile output measurement unit 108 outputs a voltage value as a measurement value based on the deflection generated in the touch sensor 101 due to the vibration.

  FIG. 5 is a functional block diagram illustrating a configuration of a main part of the reference tactile signal management server 30. The reference tactile signal management server 30 includes a transmission / reception unit 301 and a reference tactile signal database 302.

  The transmission / reception unit 301 transmits and receives signals between the portable information terminal 10 and the Web server 20 via the external network 40.

  The reference tactile signal database 302 stores a plurality of terminal type information and a plurality of tactile numbers, and stores a plurality of tactile signals in association with the terminal type information and the tactile number, respectively.

  Next, the operation of the portable information terminal 10 will be described in more detail with reference to FIGS. FIG. 6 is a flowchart showing processing of the portable information terminal 10. FIG. 7 is a diagram illustrating an example of an image displayed on the display unit 103 of the portable information terminal 10 in the process of FIG. In the following description, the terminal type of the portable information terminal 10 is “type B”. In FIG. 6, first, when an operator makes a request for access to Web page information to the portable information terminal 10, the control unit 105 transmits this access request from the transmission / reception unit 104 to the Web server 20 (step S10). . When receiving an access request from the portable information terminal 10, the Web server 20 transmits Web page information to the portable information terminal 10.

  When the portable information terminal 10 receives the Web page information from the Web server 20 by the transmission / reception unit 104 (step S11), the Web screen configuration unit 110 of the control unit 105 displays image data, character string data, and the like included in the Web page information. The web screen is configured based on the display information. Then, the control unit 105 displays the Web screen configured by the Web screen configuration unit 110 on the display unit 103 (Step S12).

  Next, the Web page analysis unit 111 of the control unit 105 determines whether or not the tactile number is included in the Web page information received in S11 (Step S13). When the tactile number is not included in the web page information in step S13, the control unit 105 ends the process. In this case, since the Web page information includes only display information, an image as shown in FIG. In FIG. 7A, the display information is blanket image data, and only the blanket image is displayed on the display unit 103.

  On the other hand, when the tactile number is included in the web page information in step S13, the web page analyzing unit 111 of the control unit 105 determines whether or not this tactile number is registered in the tactile information database 114 of the storage unit 107. (Step S14). If the tactile number is registered in the tactile information database 114 in step S14, the control unit 105 proceeds to step S17.

  On the other hand, if the tactile number “m” included in the Web page information is not registered in the tactile information database 14 in step S14, the control unit 105 obtains the tactile signal corresponding to the tactile number “m” in order to obtain the reference tactile sense. A reference tactile signal request is transmitted to the signal management server 30 (step S15). This reference tactile signal request is a signal including the terminal type information “type B” and tactile number “m” of the portable information terminal 10.

  When receiving the reference tactile signal request from the portable information terminal 10, the reference tactile signal management server 30 receives the tactile signal “S (m) corresponding to the terminal type information“ type B ”and the tactile number“ m ”from the reference tactile signal database 302. "Is read out. Thereafter, the reference tactile signal management server 30 associates the terminal type information “B”, the tactile number “m”, and the tactile signal “S (m)” with each other and transmits them to the portable information terminal 10. Here, the reference tactile signal management server 30 transmits a tactile signal “S (m)” corresponding to the terminal type “type B” of the portable information terminal 10 to the portable information terminal 10, whereby a plurality of different terminal types are associated. The tactile output on the portable information terminal can be made equivalent.

  When receiving the terminal type information “B”, the tactile number “m”, and the tactile signal “S (m)” from the reference tactile signal management server 30, the control unit 105 of the portable information terminal 10 receives the tactile number “m” and the tactile sensation. The signal “S (m)” is associated and registered in the haptic information database 114 (step S16), and the process proceeds to step S17.

  In step S16, when the control unit 105 determines that the tactile number “m” and the tactile signal “S (m)” cannot be registered based on the storage capacity of the tactile information database 114, first, the tactile sense that is not used frequently is used. The number and the tactile sensation signal are deleted from the haptic information database 114. Thereafter, the control unit 105 registers the haptic number “m” and the haptic signal “S (m)” received in step S <b> 16 in the haptic information database 114.

  In step S17, the vibration information conversion unit 112 of the control unit 105 reads the haptic signal “S (m)” corresponding to the haptic number “m” included in the Web page information from the haptic information database 114 (step S17).

  After step S17, the vibration information correction unit 113 of the control unit 105 reads the evaluation result group from the tactile information database 114, and uses the tactile signal “S (m)” read by the vibration information conversion unit 112 in step S17 as the evaluation result. Correction is performed based on the group (step S18).

  After step S18, the control unit 105 determines whether vibration can be generated by the vibration generation unit 106 based on the corrected tactile signal “Srev” (step S19). Here, for example, if the corrected tactile signal “Srev” exceeds the maximum value Imax of the input to the vibration generating unit 106, the control unit 105 determines that vibration cannot be generated, and the corrected tactile signal “Srev”. Is less than the maximum input value Imax, it is determined that vibration can be generated.

  If the control unit 105 determines in step S19 that vibration can be generated, the control unit 105 displays an image as shown in FIG. 7B on the display unit 103 and can generate vibration for the operator. Notify that there is. When the operator touches the touch sensor 101 and the contact position is within the region corresponding to the image, the control unit 105 causes the vibration generation unit 106 to vibrate based on the corrected tactile signal “Srev”. Generate (step S20). In FIG. 7B, the display information is blanket image data, and a pointing mark is displayed on the display unit 103 so as to overlap the blanket image. After step S20, the control unit 105 ends the process.

  On the other hand, when it is determined in step S19 that vibrations cannot be generated, the control unit 105 displays an image as shown in FIG. 7C on the display unit 103 to notify the operator that vibrations cannot be generated. (Step S21), the process ends. In FIG. 7C, the display information is blanket image data, and a pointing mark is superimposed on the blanket image on the display unit 103 and further a cross mark is displayed thereon.

  Here, the capability evaluation performed by the portable information terminal 10 will be described with reference to FIG. In the following description, it is assumed that the vibration generating unit 106 and the tactile output measuring unit 108 are composed of piezoelectric elements. FIG. 8 is an explanatory diagram of an evaluation input signal group used when the portable information terminal 10 performs capability evaluation. In FIG. 8, the rows corresponding to “type 0” to “type n” correspond to the evaluation input signals, respectively. In the example of FIG. 8, each evaluation input signal includes a waveform pattern and a voltage value. “Waveform pattern 0” to “waveform pattern n” are composed of voltage waveforms having different frequencies. “Voltage 0” to “voltage n” mean the amplitudes of “waveform pattern 0” to “waveform pattern n”, respectively.

  And the control part 105 of the portable information terminal 10 reads the evaluation input signal group of FIG. 8 from the tactile information database 114 first, when performing capability evaluation. Next, the control unit 105 sequentially inputs the read evaluation input signal group to the vibration generation unit 106 and causes the vibration generation unit 106 to generate vibrations sequentially. Then, based on the vibrations sequentially generated by the vibration generating unit 106, the haptic output measuring unit 108 sequentially outputs voltage values as measured values. The control unit 105 registers the measurement value group sequentially output by the haptic output measurement unit 108 in the haptic information database 114 as an evaluation result group.

Next, an example of tactile signal correction performed by the vibration information correction unit 133 of the portable information terminal 10 will be described. In the following description, it is assumed that the vibration generating unit 106 and the tactile output measuring unit 108 are composed of piezoelectric elements. Assume that the vibration reference value of the output voltage value from the tactile output measuring unit 108 is Ob with respect to the input voltage value Ib to the vibration generating unit 106. On the other hand, the current portable information terminal 10 assumes that the output voltage value from the tactile output measuring unit 108 is On (On ≠ Ob) with respect to the input voltage value Ib to the vibration generating unit 106 due to secular change or the like. . Then, in order for the current portable information terminal 10 to output the vibration reference value Ob to the tactile output measuring unit 108, the following expression holds for the input voltage value In that needs to be input to the vibration generating unit 106. In the following formula, it is assumed that linearity is established.
Ob = F (Ib)
Ob = G (In)
This
In = G ⁻¹ (F (Ib))
Is obtained.

So, for example,
Ob = αIb
Ob = βIn
Assuming that
In = α / β × Ib
Is obtained. The vibration information correction unit 133 calculates the correction coefficient (correction information) α / β for each waveform pattern in FIG. 8 based on the evaluation result group.

Then, the vibration information correction unit 113 determines the corrected tactile signal Srev in step S18 of FIG.
Srev = α / β × S (m)
Ask for.

  When mobile information terminal 10 according to the present embodiment receives Web page information in which display information and vibration information are associated with each other from Web server 20, the tactile output is determined according to the tactile output capability of mobile information terminal 10. This vibration information is changed so as to satisfy Thereby, the portable information terminal 10 can present a desired tactile sensation corresponding to the vibration information without being influenced by individual differences, secular changes, and the like.

  In addition, this invention is not limited only to the said embodiment, Many deformation | transformation or a change is possible. For example, in the operation described with reference to FIG. 1, the portable information terminal 10 acquires the vibration information from the Web server 20 together with the display information, but the vibration information and the display information may be acquired from different servers. it can.

  In the example of FIG. 8, the waveform pattern of the evaluation input signal is composed of a waveform of one frequency. However, the waveform pattern can be composed of waveforms of a plurality of frequencies. When the waveform pattern is composed of waveforms having a plurality of frequencies, the vibration information correction unit 312 obtains the correction coefficient α / β for each frequency of each waveform constituting the waveform pattern in step S18 of FIG. The tactile signal is corrected based on each correction coefficient α / β.

  In the example of FIG. 4, the vibration generating unit 106 is provided on the back surface of the touch sensor 101, but may be provided on the inner surface of the housing 120 instead. When the vibration generation unit 106 is provided on the inner surface of the housing 120, the vibration generation unit 106 vibrates the housing 120 to stimulate the tactile sensation of the operator's finger or the like that is in contact with the touch sensor 101, thereby generating a tactile sensation. Present.

 In the present invention, “vibration on the touch surface of the touch sensor by the vibration generation unit” may be any vibration that directly or indirectly vibrates the touch surface of the touch sensor. The portion 106 is a vibration motor (eccentric motor), and the touch surface 101a of the touch sensor 101 is directly vibrated, or the holding member that holds the touch sensor 101 and the casing 120 of the portable information terminal are vibrated to thereby change the touch surface 101a. You may comprise so that it may vibrate indirectly.

  In addition, the “accepting input with the touch sensor” in the present invention may be a case where the input to the touch sensor 101 is detected by detecting contact with the touch sensor 101 by the input object. It may be a case where an input is received when a predetermined load threshold is exceeded.

  When receiving an input when the pressure load on the touch sensor 101 by the input object exceeds a predetermined load threshold, the portable information terminal 10 is provided with a load detection unit that detects the pressure load on the touch surface 101a of the touch sensor 101, When the pressing load detected by the load detection unit satisfies a predetermined criterion for receiving an input, the vibration generation unit 106 may generate vibration to the touch surface 101a. The load detection unit can be configured using an element that reacts linearly to a load such as a strain gauge sensor or a piezoelectric element. In addition, when the vibration generating unit 106 is configured by a piezoelectric element provided in the touch sensor 101, the load detecting unit and the vibration generating unit 106 may be configured to share the piezoelectric element. This is because the piezoelectric element generates electric power when pressure is applied and deforms when electric power is applied. Alternatively, the tactile output measurement unit 108 can also be used as a load detection unit. The time when the pressure load detected by the load detection unit satisfies the predetermined criterion for receiving input may be when the pressure load detected by the load detection unit reaches a predetermined value for receiving input. The pressing load detected by the load detection unit may exceed a predetermined value for receiving input, or may be when the predetermined value for receiving input is detected by the load detection unit.

  In addition, the touch sensor 101 and the display unit 103 can be configured as an integrated device by providing both functions of the touch sensor 101 and the display unit 103 on a common substrate. As an example of a configuration of the device in which both functions of the touch sensor 101 and the display unit 103 are integrated, a plurality of photoelectric conversion elements such as photodiodes are regularly arranged in a matrix electrode array of pixels included in a liquid crystal panel. Some are mixed. This device displays an image with a liquid crystal panel structure, while reflecting the light of a backlight for liquid crystal display at the tip of a pen that touches and inputs a desired position on the surface of the panel. The reflected light is reflected by peripheral photoelectric conversion elements. By receiving the light, the touch position can be detected.

DESCRIPTION OF SYMBOLS 1 Tactile service system 10a, 10b, 10 Portable information terminal 15a, 15b Wireless base station 20 Web server 30 Reference | standard tactile signal management server 40 Network 101 Touch sensor 101a Touch surface 102 Imaging part 103 Display part 104 Transmission / reception part 105 Control part 106 Vibration generation Unit 107 storage unit 108 tactile output measurement unit 110 web screen configuration unit 111 web page analysis unit 112 vibration information conversion unit 113 vibration information correction unit 114 tactile information database 120 housing 121 insulator 122 upper cover 123 insulator 301 transmission / reception unit 302 reference tactile signal The database

Claims (3)

A touch sensor;
A vibration generating unit that vibrates the touch surface of the touch sensor based on vibration information;
A storage unit for storing a vibration reference value;
A control unit that generates vibration on the touch surface by the vibration generation unit,
The controller is
Generating correction information of the vibration information using the vibration reference value;
When the touch sensor receives an input, the vibration information is corrected by the correction information, and the vibration generating unit generates a vibration on the touch surface by the corrected vibration information. A tactile output measuring unit for measuring vibration on the touch surface;
The controller is
A correction coefficient of the vibration information is obtained based on the vibration reference value and a measurement value output from the tactile output measurement unit when the vibration generation unit generates vibration based on an evaluation input signal. The portable information terminal according to claim 1. The portable information terminal according to claim 1, further comprising a receiving unit that receives vibration information.

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