JP2010267196A - Handwriting reader - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive configuration for detecting handwriting written by using a general writing material on general paper, in a handwriting reader. <P>SOLUTION: The handwriting reader 1 includes a read part 2 for outputting an electric signal in accordance with the handwriting written by a user. The read part 2 has: an EAP member 21 formed by EAP; many upper side electrodes 22 provided on the upper side of the EAP member 21; many lower side electrodes 23 provided on the lower side of the EAP member 21; and an upper surface sheet 24 provided on the upper side electrodes 22. When general paper 80 is placed on the upper surface sheet 24 and something is written on the paper 80 using a general writing material 90, the EAP member 21 is deformed by the pressure of the handwriting, distances between the upper side electrodes 22 and the lower side electrodes 23 are changed, and capacitance by the upper side electrodes 22 and the lower side electrodes 23 is changed. The change in capacitance is output, through upper side wiring 28 and lower side wiring 29, from the upper side electrodes 22 and the lower side electrodes 23 as electric signals in accordance with the handwriting. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a handwriting reader that detects a handwriting written by a user and converts it into electronic information.

  Conventionally, a person's finger or a dedicated pen with conductivity is brought into contact with the surface of the dedicated panel with conductivity, and the contact position is detected by a change in capacitance, and the handwriting by the person's finger or the dedicated pen is detected. There is an electrostatic coupling type handwriting reader which detects the above. However, in such a handwriting reading device, the handwriting cannot be detected across the insulator, so that the handwriting written on a general paper using a general writing instrument cannot be detected.

  In addition, by using a dedicated pen that outputs an alternating magnetic field and writing on the sheet body in which the loop coil is embedded, the position of the dedicated pen is detected by the change in magnetism, and the handwriting by the dedicated pen is detected. There is a combined handwriting reader. However, in such a handwriting reading device, handwriting cannot be detected unless a dedicated pen that outputs an alternating magnetic field is used. Therefore, handwriting written on general paper using a general writing instrument can be detected. Can not.

  Therefore, the two electrodes are opposed to each other across a minute space, the electrodes are bent at a place where pressure is applied, the electrodes are brought into contact with each other and energized, and the resistance value when the electrodes are in contact with each other and energized is obtained. Based on this, there is known a resistance film type handwriting reader which detects a handwriting by detecting a position where pressure is applied (see, for example, Patent Documents 1 to 3). In the handwriting reading devices described in Patent Documents 1 to 3, it is possible to detect handwriting written on general paper using a general writing tool by placing general paper. However, it is not easy for such a handwriting reader to form a minute space between two electrodes, the structure becomes complicated, the manufacturing difficulty increases, and the cost increases.

  On the other hand, there is known a handwriting reader that detects a writing pressure with a pressure sensor provided at a writing tip of an input pen and can adjust a line width or a line density of the handwriting according to the writing pressure (for example, Patent Documents). 4). This Patent Document 4 does not describe any specific method for detecting a handwriting.

  Also, a handwriting reading device is known in which the thickness of the handwriting line can be adjusted according to the rest time of the pen tip (see, for example, Patent Document 5). This Patent Document 5 does not describe any specific method for detecting a handwriting.

JP 2003-15815 A Japanese Patent Laid-Open No. 11-65770 JP 7-319609 A JP-A-8-87372 JP-A-9-212285

  By the way, in the handwriting reading device, a configuration capable of detecting a handwriting when writing on a general paper using a general writing tool is highly convenient, and a general writing tool is used on a general paper. It is desired to realize a configuration capable of detecting a handwriting at the time of writing with use at low cost. In addition, in the electrostatic coupling method, the magnetic coupling method, and the resistance film type handwriting detection method in the conventional handwriting reader, the writing pressure by writing cannot be detected unless a dedicated pen provided with a pressure sensor is used. That is, if a general writing instrument is used, the writing pressure by writing cannot be detected. For this reason, even when writing using a general writing instrument, if the writing pressure by writing can be detected, the convenience is remarkably improved.

  The present invention has been made in order to solve the above-described problems, and a handwriting that can realize at low cost a configuration capable of detecting a handwriting when writing on a general sheet using a general writing instrument. An object is to provide a reader.

  In order to achieve the above object, the invention of claim 1 detects a handwriting written by a user based on an electric signal output from the reading unit that outputs an electric signal according to the writing by the user and the reading unit. In the handwriting reading device including the detection processing unit, the reading unit includes an EAP member formed of EAP (Electroactive Polymer: electric field responsive polymer) and a large number of minute elements arranged in a matrix on the upper side of the EAP member. An upper electrode, a plurality of minute lower electrodes arranged in a matrix on the lower side of the EAP member, and a sheet provided on the upper electrode for a user to place paper on the sheet. An electrical signal corresponding to writing on the paper is output from the upper electrode or the lower electrode, and the detection processing unit is configured to output the sheet via the paper on the sheet based on the electrical signal output from the upper electrode or the lower electrode. Joined By detecting the pressure, and detects the handwriting is written on the paper.

  According to a second aspect of the present invention, in the handwriting reading device according to the first aspect, the detection processing unit further generates a handwriting pressure of the handwriting written on the paper based on an electric signal output from the upper electrode or the lower electrode. It is to detect.

  According to a third aspect of the present invention, in the handwriting reading device according to the second aspect, the reading unit is a sheet-like member having flexibility, and one end of the reading unit is connected, and the reading unit is used when the apparatus is not used. A winding unit for enabling winding is further provided, and a detection processing unit is disposed inside the winding unit.

  According to a fourth aspect of the present invention, in the handwriting reading device according to the first aspect, the reading unit is a sheet-like member having flexibility, and one end of the reading unit is connected, and the reading unit is used when the apparatus is not used. A winding unit for enabling winding is further provided, and a detection processing unit is disposed inside the winding unit.

  According to the first aspect of the present invention, when a general sheet is placed on the sheet of the reading unit and writing is performed on the sheet on the sheet using a general writing instrument, the pressure (writing pressure) by the writing is applied. The shape of the EAP member is deformed, the distance between the upper electrode and the lower electrode at the location where the pressure is applied is reduced, and the capacitance due to the upper electrode and the lower electrode at the location where the pressure is applied increases. . At this time, the greater the applied pressure (the greater the writing pressure), the closer the distance between the upper electrode and the lower electrode, and the greater the capacitance between the upper electrode and the lower electrode. This change in capacitance is output as an electrical signal from the upper electrode or lower electrode of the reading unit. That is, an electric signal corresponding to writing on the sheet on the sheet (positional coordinates where pressure is applied by writing and electric signal corresponding to the magnitude of pressure (writing pressure) applied by writing) is the upper side of the reading unit. Output from the electrode or the lower electrode. Then, the handwriting written on the paper is detected by the detection processing unit based on the electrical signal output from the upper electrode or the lower electrode of the reading unit.

  In this way, by placing a general sheet on the sheet of the reading unit and writing on the sheet on the sheet using a general writing instrument, using a general writing instrument on a general sheet The handwriting at the time of writing can be detected. Moreover, it is not necessary to form a small space between the two electrodes as in the conventional resistive film system, the reading unit has a simple structure and can be easily manufactured, and the handwriting reading device is inexpensive. Can be realized.

  According to the invention of claim 2, in addition to the two-dimensional trajectory written by writing as the handwritten written on the paper based on the electric signal output from the upper electrode or the lower electrode by the detection processing unit, by writing The writing pressure (which could not be detected by the conventional electrostatic coupling method, magnetic coupling method, and resistive film method) is detected. Therefore, convenience is improved.

  According to the invention of claim 3 and claim 4, when the handwriting reading device is not used or carried, the handwriting reading device can be stored compactly by winding the reading portion around the winding portion, In addition, portability can be improved.

(A) is a perspective view of the state which unfolded the reading part which shows the whole structure of the handwriting reader which concerns on one Embodiment of this invention, (b) is a perspective view of the state which wound the reading part around the winding part, ( FIG. 3C is a plan view of a state where the reading unit is expanded and a sheet is placed. (A) is a partially broken perspective view of the reading unit of the handwriting reader, (b) is a cross-sectional view when the reading unit is not written, (c) is when the reading unit is written Sectional drawing. The electric block block diagram of the handwriting reader.

  Hereinafter, a handwriting reader according to an embodiment of the present invention will be described with reference to the drawings. 1A, 1B, and 1C show the configuration of the handwriting reader according to the present embodiment. The handwriting reading device 1 is a device that detects a handwritten handwritten handwritten by a user such as a memo or minutes, and converts it into electronic information. The handwriting reader 1 reads a handwriting written on a paper 80 using a writing tool 90 and converts it into electronic information. As the paper 80, an arbitrary paper (a commercially available general paper) is used, and as the writing instrument 90, an arbitrary writing tool (a commercially available general writing instrument such as a pencil or a ballpoint pen) is used.

  The handwriting reading device 1 includes a reading unit 2 for reading a handwritten handwritten by a user, a winding unit 3 for enabling the reading unit 2 to be wound, and a handwriting reading device 1 for operating the handwriting reading device 1. And an electric circuit unit 4. The electric circuit unit 4 constitutes a detection processing unit that detects handwriting written by the user. In addition, the handwriting reading device 1 includes an operation unit 5 that is operated by the user to instruct various operations of the handwriting reading device 1, a display unit 6 that performs various displays related to the operation of the handwriting reading device 1, and a memory card 7. Card mounting portion 8 for mounting the card.

  The reading unit 2 is a pressure-sensitive device that outputs a position coordinate to which pressure is applied and the magnitude of the applied pressure as an electrical signal, and a sheet 80 on which a user writes characters, figures, and the like is placed. When the user writes on the paper 80 using the writing tool 90, an electrical signal corresponding to the writing on the paper 80 by the user (according to the position coordinates where pressure is applied by writing and the magnitude of the applied pressure). An electrical signal) is output. The reading unit 2 has a rectangular shape, and is large enough to place an A4 size paper as the paper 80.

  The reading unit 2 is a flexible sheet-like member, one end side in the longitudinal direction is connected to the winding unit 3, and the other end side in the longitudinal direction is a free end. The reading unit 2 is a flexible sheet-like member, and can be wound around the winding unit 3. Details of the configuration of the reading unit 2 will be described later.

  The winding unit 3 is formed of a material such as hard plastic so as to have rigidity, and one end in the longitudinal direction of the reading unit 2 is connected thereto. The winding unit 3 is formed in an elongated shape so that the reading unit 2 can be wound when the handwriting reader 1 is not used or carried. Further, the winding unit 3 can be stably placed on a desk or the like when using the handwriting reader 1 (so that the reading unit 2 does not move by changing the posture of the winding unit 3). The bottom surface is formed flat.

  Further, the winding part 3 is formed to be hollow inside, and the electric circuit part 4 is disposed inside the winding part 3. That is, the winding part 3 also serves as a housing that houses the electric circuit part 4. The operation unit 5 and the display unit 6 are provided on the upper surface of the winding unit 3, and the card mounting unit 8 is provided on the side surface of the winding unit 3.

  The electric circuit unit 4 operates the handwriting reading device 1 in response to the operation of the operation unit 5 by the user, detects the handwriting written by the user based on the electric signal output from the reading unit 2, and electronic information Convert to

  When the handwriting reading device 1 is used, the handwriting reading device 1 is placed on a desk or the like with the reading unit 2 unfolded, and the paper 80 is placed on the reading unit 2 (see FIG. 1A). In this state, when the user writes characters or figures on the paper 80 on the reading unit 2 by hand using the writing instrument 90, the written handwriting is detected and converted into electronic information.

  When the handwriting reader 1 is not used or carried, the reading unit 2 is wound around the winding unit 3 (see FIG. 1B). By winding the reading unit 2 around the winding unit 3 in this way, the handwriting reading device 1 can be stored in a compact manner, and portability can be improved.

  2A, 2B, and 2C show the configuration of the reading unit 2. FIG. The reading unit 2 includes an EAP member 21 formed of EAP (Electroactive Polymer: electric field responsive polymer), which is a kind of dielectric, and a large number of microscopic elements arranged in a matrix (vertically and horizontally) above the EAP member 21. Upper electrode 22, a large number of minute lower electrodes 23 arranged in a matrix (vertically and horizontally) below EAP member 21, upper surface sheet 24 provided on upper electrode 22, and lower electrode 23 And a lower surface sheet 25 provided on the upper surface.

  The upper electrode 22 is electrically connected by a plurality of upper wirings 28. Each of the upper wirings 28 electrically connects the upper electrodes 22 arranged in the horizontal direction among the upper electrodes 22 arranged vertically and horizontally in series. That is, among the upper electrodes 22 arranged in the vertical and horizontal directions, one row arranged in the horizontal direction is electrically connected in series by the upper wiring 28.

  The lower electrode 23 is electrically connected by a plurality of lower wirings 29. Each lower wiring 29 electrically connects in series one row of lower electrodes 23 arranged in the vertical direction among the lower electrodes 23 arranged vertically and horizontally. That is, among the lower electrodes 23 arranged vertically and horizontally, one row arranged in the vertical direction is electrically connected in series by the lower wiring 29.

  The upper surface sheet 24 is a sheet for protecting the upper electrode 22 and is a sheet for the user to place a sheet. The lower surface sheet 25 is a sheet for protecting the lower electrode 23. The top sheet 24 and the bottom sheet 25 are made of an insulating material.

  In the reading unit 2 having such a configuration, when a sheet 80 is placed on the top sheet 24 and writing is performed on the sheet 80 on the top sheet 24 using the writing tool 90 (see FIG. 2C), the writing is performed. The shape of the EAP member 21 is deformed by the pressure (writing pressure) due to the pressure, and the distance between the upper electrode 22 and the lower electrode 23 where the pressure due to the writing is applied approaches from t1 to t2, and the pressure due to the writing is applied. The electrostatic capacitance due to the upper electrode 22 and the lower electrode 23 at the place is increased. Further, the greater the pressure by writing (the greater the writing pressure), the closer the distance between the upper electrode 22 and the lower electrode 23, and the greater the capacitance between the upper electrode 22 and the lower electrode 23.

  Further, when writing is no longer performed (when pressure by writing is no longer applied), the elasticity of the EAP member 21 itself returns to the shape before the writing of the shape of the EAP member 21 (before pressure is applied by writing), The distance between the upper electrode 22 and the lower electrode 23 returns to the distance before the writing, and the electrostatic capacitance due to the upper electrode 22 and the lower electrode 23 also returns to the electrostatic capacity before the writing.

  Such a change in capacitance is generated as an electric signal from the upper electrode 22 and the lower electrode 23 (the upper electrode 22 and the lower electrode 23 where pressure is applied by writing) where the capacitance has changed. Then, the signal is output via the upper wiring 28 and the lower wiring 29 connected to the upper electrode 22 and the lower electrode 23.

  That is, according to the reading unit 2 configured as described above, when writing is performed on the sheet 80 placed on the upper surface sheet 24, the capacitance due to the upper electrode 22 and the lower electrode 23 at the written position is increased. The capacitance changes depending on the pressure (writing pressure) by writing, and the change in the capacitance is transmitted from the upper electrode 22 and the lower electrode 23 to the upper wiring 28 and the lower wiring 29 as electrical signals corresponding to the writing. Is output via.

  Considering a configuration in which a constant DC voltage is applied to the upper electrode 22 and the lower electrode 23, if the capacitance of the upper electrode 22 and the lower electrode 23 changes, Q = CV (Q: charge charge amount) , C: electrostatic capacity, V: voltage), the charge amount of the upper electrode 22 and the lower electrode 23 changes according to the change of the electrostatic capacity. The magnitude of the change in the charge amount corresponds to the magnitude of the change in capacitance, that is, the pressure (writing pressure) applied by writing. The change in the charge amount causes a current to flow through the upper wiring 28 and the lower wiring 29 connected to the upper electrode 22 and the lower electrode 23 where the capacitance has changed.

  Therefore, in a configuration in which a constant DC voltage is applied to the upper electrode 22 and the lower electrode 23, an electrical signal corresponding to writing is output as a current flowing through the upper wiring 28 and the lower wiring 29. The upper wiring 28 and the lower wiring 29 through which current flows correspond to the position coordinates to which pressure is applied by writing, and the magnitude of the flowing current is the magnitude of pressure applied by writing (writing pressure). Corresponding to

Further, when considering the configuration in which an AC voltage is applied to the upper electrode 22 and the lower electrode 23, when the capacitances of the upper electrode 22 and the lower electrode 23 change, the capacitance changes according to the change of the capacitance. The relaxation time until the charge is discharged from the upper electrode 22 and the lower electrode 23 (the time until the voltage becomes 0 when the charge is discharged) changes. The magnitude of this change in relaxation time corresponds to the magnitude of the change in capacitance, that is, the magnitude of pressure (writing pressure) applied by writing. The change in the relaxation time is caused by the difference in change in voltage between the upper wiring 28 and the lower wiring 29 connected to the upper electrode 22 and the lower electrode 23 where the capacitance has changed (electrostatic capacitance). Causes the difference to the voltage change (in the unwritten reference state) before the capacitance changes. This depends on V = V ₀ × e ^{(−λ × t)} (V: voltage after the start of discharge, V ₀ : voltage before the start of discharge, and λ: capacitance when the charge is discharged. (Time constant, t: time), the voltage between the upper wiring 28 and the lower wiring 29 is a time constant depending on the magnitude of the capacitance, and exponentially with time. This is because it decreases.

  Therefore, in the configuration in which an alternating voltage is applied to the upper electrode 22 and the lower electrode 23, the electrical signal corresponding to the writing is a difference in change in voltage between the upper wiring 28 and the lower wiring 29 (capacitance). Is output as the difference in voltage change (in a reference state that is not written) before. Then, the upper wiring 28 and the lower wiring 29 in which the voltage change occurs correspond to the position coordinates to which pressure is applied by writing, and the degree of voltage change difference (the voltage becomes 0 when the electric charge is discharged). Change amount of relaxation time until) corresponds to the magnitude of pressure (writing pressure) applied by writing.

  As described above, when the reading unit 2 is written on the paper 80 placed on the upper surface sheet 24, an electric signal corresponding to the writing (positional coordinates where pressure is applied by writing, and writing is added). An electric signal corresponding to the magnitude of the pressure (writing pressure) is output from the upper electrode 22 and the lower electrode 23 through the upper wiring 28 and the lower wiring 29.

  FIG. 3 shows an electrical block configuration of the handwriting reader 1. The electric circuit unit 4 includes a power source 41, an AD conversion unit 42, a storage unit 43, a control unit 44 including a CPU, a ROM, and the like that control the operation of the handwriting reading device 1. The ROM of the control unit 44 stores a program and various data for controlling the operation of the handwriting reader 1.

  The reading unit 2 outputs an electrical signal corresponding to the user's writing (positional coordinates to which pressure is applied by writing and an electrical signal corresponding to the magnitude of the applied pressure). When operated by the user, the operation unit 5 outputs an operation signal corresponding to the operation. The display unit 6 performs various displays related to the operation of the handwriting reading device 1 under the control of the control unit 44.

  The power source 41 generates operating power necessary for the operation of each part of the handwriting reading device 1 based on the power of a battery (not shown) attached to the handwriting reading device 1. The operating power generated by the power supply 41 is supplied to the control unit 44 and to each part of the handwriting reading device 1 under the control of the control unit 44. The AD conversion unit 42 converts an electrical signal output from the reading unit 2 (output from the upper electrode 22 and the lower electrode 23 of the reading unit 2 via the upper wiring 28 and the lower wiring 29) into a digital signal. Output. The storage unit 43 stores various electronic information such as handwriting data of handwriting written by the user under the control of the control unit 44.

  The control unit 44 receives an operation signal output from the operation unit 5 (that is, receives an operation of the operation unit 5 by the user), turns on the power of the handwriting reading device 1, and detects a handwriting written by the user. Various operations of the handwriting reading device 1 such as a handwriting detection processing operation for converting to handwriting data and a handwriting data transfer operation for transferring handwriting data to the memory card 7 are controlled.

  The handwriting detection processing operation is performed as follows under the control of the control unit 44. That is, the control unit 44 supplies power to the reading unit 2 (applies a constant DC voltage or AC voltage to the upper electrode 22 and the lower electrode 23 of the reading unit 2). Then, the control unit 44 is output based on the digital signal output from the AD conversion unit 42 (that is, output from the upper electrode 22 and the lower electrode 23 of the reading unit 2 via the upper wiring 28 and the lower wiring 29). Based on the electrical signal), the position coordinates to which the pressure is applied on the upper surface sheet 24 of the reading unit 2 and the magnitude of the applied pressure are detected, and the handwriting written by the user is detected.

  At this time, the control unit 44 detects a two-dimensional trajectory and a writing pressure at each position of the two-dimensional trajectory as handwriting written by the user. Further, the control unit 44 determines whether the pressure applied on the upper surface sheet 24 of the reading unit 2 is the pressure that is written by the user based on the detected pressure distribution pattern and the magnitude of the pressure. It is determined whether or not the pressure is due to the hand or finger touching the reading unit 2, and the handwriting written by the user is detected.

  Then, the control unit 44 converts the detected handwriting into handwriting data (generates data indicating the position coordinates of each position of the two-dimensional trajectory and data indicating the pen pressure at each position of the two-dimensional trajectory. The handwriting data is stored in the storage unit 43. The handwriting detection processing operation is performed in response to a handwriting detection start operation by the user at the operation unit 5.

  The handwriting data transfer operation is performed as follows under the control of the control unit 44. That is, the control unit 44 reads the handwriting data stored in the storage unit 43 and transfers the handwriting data to the memory card 7 mounted on the card mounting unit 8. The handwriting data transferred to the memory card 7 is stored in the memory card 7. The handwriting data transfer operation is performed in response to a handwriting data transfer operation on the operation unit 5 by the user.

  The memory card 7 in which handwriting data is stored is attached to, for example, a personal computer, and the handwriting data stored in the memory card 7 is taken out to the personal computer, and the handwriting image based on the handwriting data is stored in the personal computer. Printed out. At this time, the handwriting image is based on handwriting data (data indicating the writing pressure at each position of the two-dimensional trajectory) (that is, based on the writing pressure) and, as necessary, the handwriting line density and line width. Etc. are edited and printed out. For example, when the writing pressure is low, the line width of the handwriting data may be interpolated.

  According to the handwriting reading apparatus 1 having such a configuration, the general paper 80 is placed on the upper surface sheet 24 of the reading unit 2, and the general writing tool 90 is used on the paper 80 on the upper surface sheet 24. When writing is performed, an electrical signal corresponding to the writing (position coordinates where pressure is applied by writing and an electrical signal corresponding to the magnitude of pressure (writing pressure) applied by writing) is output from the reading unit 2. The handwriting written on the sheet 80 is detected by the electric circuit unit 4 (control unit 44) based on the electric signal output from the reading unit 2.

  As described above, the general paper 80 is placed on the upper surface sheet 24 of the reading unit 2, and writing is performed on the paper 80 on the upper surface sheet 24 using the general writing tool 90. 80, the handwriting at the time of writing using a general writing instrument 90 can be detected. Moreover, it is not necessary to form a small space between two electrodes as in the conventional resistive film system, the reading unit 2 has a simple structure, and the reading unit 2 can be easily manufactured. 1 can be realized at low cost.

  Further, as handwriting written on the paper 80, in addition to a two-dimensional locus by writing, writing pressure by writing (thing that could not be detected by the conventional electrostatic coupling method, magnetic coupling method, and resistive film method) is detected. Is done. Therefore, convenience is improved.

  Moreover, when the handwriting reader 1 is not used or carried, the handwriting reader 1 can be stored in a compact manner by winding the reading unit 2 around the winding unit 3 and also improve portability. Can do.

  In addition, this invention is not restricted to the structure of the said embodiment, A various deformation | transformation is possible. For example, a sensor for detecting that the paper is placed on the reading unit is provided, and the handwriting detection processing operation and the handwriting data transfer operation are automatically performed in conjunction with the detection output of the sensor. Good. Further, it is preferable to form the bottom surface of the winding unit and the bottom sheet of the reading unit with a material having a high friction coefficient such as rubber so that the handwriting reading device does not slip when the handwriting reading device is placed on a desk or the like. . Further, it is desirable that the control unit detects the writing speed. Thereby, when using a credit card, the speed of the signature made by the card user is detected, and a warning or the like can be given when the speed of the signature is too slow.

DESCRIPTION OF SYMBOLS 1 Handwriting reader 2 Reading part 3 Winding part 4 Electric circuit part (detection processing part)
DESCRIPTION OF SYMBOLS 5 Operation part 6 Display part 7 Memory card 8 Card mounting part 21 EAP member 22 Upper electrode 23 Lower electrode 24 Upper surface sheet 25 Lower surface sheet 28 Upper side wiring 29 Lower side wiring 41 Power supply 42 AD conversion part 43 Memory | storage part 44 Control part 80 Paper 90 Writing instruments

Claims (4)

In a handwriting reading device comprising: a reading unit that outputs an electric signal according to a writing by a user; and a detection processing unit that detects a handwriting written by the user based on the electric signal output from the reading unit;
The reading unit is
An EAP member formed of EAP (Electroactive Polymer);
A number of minute upper electrodes arranged in a matrix on the upper side of the EAP member;
A number of minute lower electrodes arranged in a matrix on the lower side of the EAP member;
A sheet provided on the upper electrode for the user to place paper;
An electrical signal corresponding to writing on the sheet on the sheet is output from the upper electrode or the lower electrode,
The detection processing unit
Based on the electrical signal output from the upper electrode or the lower electrode, by detecting the pressure applied to the sheet through the paper on the sheet, the handwriting written on the paper is detected,
A handwriting reader characterized by that. The detection processing unit further detects a writing pressure of a handwriting written on the paper based on an electric signal output from the upper electrode or the lower electrode.
The handwriting reader according to claim 1. The reading unit is a sheet-like member having flexibility,
One end of the reading unit is connected, further comprising a winding unit for enabling the reading unit to be wound when the apparatus is not used,
The detection processing unit is arranged inside the winding unit,
The handwriting reader according to claim 2. The reading unit is a sheet-like member having flexibility,
One end of the reading unit is connected, further comprising a winding unit for enabling the reading unit to be wound when the apparatus is not used,
The detection processing unit is arranged inside the winding unit,
The handwriting reader according to claim 1.

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