TW202213052A - Position detection device, page detection method, and sheet-like recording medium - Google Patents

Abstract

To enable detection of page information of a certain page during writing without providing a projecting part for page detection, without using an optical or magnetic detection means or a sensor that reads a code such as a two-dimensional code, and without user operation. A position detection device 10 according to the present invention detects a position indicated by a stylus Sa configured to be usable for visible handwriting on a notepad P1 placed on a touch surface 10a. The position detection device 10 comprises a sensor that senses a page identification member for identifying each page constituting a plurality of pages placed on the notepad P1, and a control circuit connected to the sensor. The page identification member is configured by a conductor, and the sensor is configured to detect the conductor using a capacitive sensing method. The control circuit is configured to be capable of identifying the page being handwritten with the stylus Sa in response to the detection of the conductor by the sensor.

Description

Position detection device, page detection method, and sheet-like recording medium

The present invention relates to a position detection device, a page detection method, and a sheet-like recording medium.

When writing characters or drawings on a sheet-like recording medium such as manuscript paper, there is known a handwritten data drawing device that can electronically import the handwriting as handwritten data. Such a device generally includes a position detection device such as a digitizer, and a stylus having both the function of a pointer and the function of a ballpoint pen. The sheet-like recording medium is arranged on the touch surface of the position detection device. According to this configuration, when the user uses the ballpoint pen function of the stylus to write characters or pictures on the surface of the sheet-like recording medium, the position detection device can obtain the information representing the stylus on the touch surface. A sequence of coordinate data for a movement track. The series of coordinate data obtained in this way becomes handwritten data representing the handwriting of the electronic pen.

In addition, as a sheet-like recording medium used in a handwritten document drawing device, there are cases where a plurality of pages are provided as in a notebook or the like. In this case, the handwritten data drawing device needs to create handwritten data separately for each page. This is because, if this is not done, the handwriting written on each of the plural pages of the sheet-like recording medium will overlap each other on the screen within one page. In this regard, Patent Document 1 discloses the following general technique. That is, by providing an operation key for switching a file to be a storage target of coordinate data to a new file at the position detection device, to constitute a file of handwritten data at each page. In addition, Patent Document 2 discloses a general technique in which a barcode representing a document name or a page number is pre-printed on each page of a sheet-like recording medium, and a barcode reader is used to read to read this barcode to identify the page the user is writing. [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 6005880 [Patent Document 2] Japanese Patent Laid-Open No. 2001-147771

[The problem to be solved by the invention]

However, in the technique of Patent Document 1, if the user forgets to press the operation key, the handwriting written on each of the plural pages of the sheet-like recording medium will be on the screen and within one page displayed on top of each other. Moreover, in the technique of patent document 2, since the protrusion part required for a barcode reader appears on the surface on which the sheet-like recording medium is mounted, it is not aesthetically pleasing in design.

Although it may be considered to allow the user to identify the page being written by optically detecting the holes provided in each page of the sheet-like recording medium, however, if it is configured to radiate light from a dedicated light source and To measure the intensity of the reflected light, it is necessary to provide a complicated structure for transmitting and receiving light. It may be considered to use indoor lighting or external light such as sunlight instead of a dedicated light source. However, in this case, the detection accuracy may vary depending on the intensity of the external light.

In addition, although it is also possible to add a symbol such as a QR code representing the page to the surface of each page, and to read the symbol with a sensor to allow the user to identify the page being written, however, In this method, the sensor for reading the symbols needs to be arranged to cover the surface side of the page, and the sensor may hinder the page turning.

Furthermore, although a method of disposing a magnetic material on each page and magnetically identifying page turns can be considered, however, considering the expansion of the magnetic field, there is a great limit on the number of pages that can be overlapped .

Therefore, one of the objectives of the present invention is to provide a position detection device, a printer and a page detection method which can avoid the above-mentioned general problems and can specify the page being written. [means to solve the problem]

The position detection device described in the present embodiment includes a mounting surface on which a sheet-like recording medium configured so that a plurality of pages overlap each other is placed, and the position detection device , which corresponds to the handwriting operation on the sheet-like recording medium placed on the mounting surface by the stylus, and detects the position indicated by the stylus. The stylus is composed of A position detection device capable of visually recognizing handwriting on the sheet-like recording medium mounted on the mounting surface is characterized in that it is provided with a sensor that senses for each A page identification member for identifying the pages, the respective pages constitute the plurality of pages arranged in the sheet-like recording medium placed on the mounting surface; and a control circuit is connected with the aforementioned The sensor is connected, the page identification member is formed by a conductor, and the sensor is configured to detect the conductor by electrostatic capacitance, and the control circuit is configured as The target page of the handwriting operation by the stylus can be recognized in response to the detection of the conductive body disposed in the sheet-like recording medium by the sensor.

The page detection method described in this embodiment detects a page corresponding to a handwriting operation by a touch pen on a sheet-like recording medium placed on a placement surface, the placement surface, The above-mentioned sheet-like recording medium constituted so that a plurality of the above-mentioned pages are stacked on each other is placed, and the touch pen is configured to be able to perform a recording operation on the above-mentioned sheet-like recording medium placed on the above-mentioned placing surface. Visually recognizable handwriting, and the method for detecting a page, are characterized in that: corresponding to the fact that the stylus is separated from the sheet-like recording medium placed on the placing surface, an electrostatic capacitance is used to separate the stylus. In this way, a page identification member composed of a conductor is sensed for identifying each page that constitutes the sheet-like record placed on the mounting surface. The plurality of pages in the medium are configured to be able to correspond to the detection of the conductors arranged in the sheet-like recording medium by the sensors, and to be able to respond to handwriting operations by the stylus pen. the object page for identification.

The sheet-like recording medium described in this embodiment is constituted in such a way that a plurality of pages overlap each other, and is characterized in that it is used together with a page-turning state detection device, and the page-turning state detection device is a Equipped with an electrostatic sensor, the electrostatic sensor is used for identifying the mounting surface on which the sheet-like recording medium is placed and each page of the sheet-like recording medium, and the sheet-like recording medium is A page identification member for identifying each of the pages constituting the plurality of pages is arranged, and the page identification member is constituted by a conductor, so that it can be configured based on the sensing According to the detection state of the electrical conductor by the device, the page corresponding to the page-turning of the sheet-like recording medium constituted so that a plurality of pages are overlapped with each other is recognized. [Effect of invention]

According to the present invention, there is no need to provide a protruding portion for page detection, and it is not necessary to use optical or magnetic detection means, or a sensor that can read symbols such as two-dimensional codes, and There is also no need for user operation to detect the page information of the page being written.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

FIG. 1 is a diagram showing the position detection device 10 and the touch panel terminal 30 according to the first embodiment of the present invention. The position detection device 10 has a built-in projection type electrostatic capacitance sensor (PCAP, electrostatic sensor), and is used to detect the touch on the touch surface 10a shown in the figure by this sensor. A device for the position of the pen Sa. The touch pen Sa corresponds to the active electrostatic method. It functions as a pointer for indicating a position on the touch surface 10a, and also functions as a writing implement (for example, a ballpoint pen) for leaving handwriting visibly on the surface of the sheet-like recording medium effect. The touch panel terminal 30 is a computer having a touch screen 31 corresponding to touch input. The position detection device 10 and the touch panel terminal 30 are connected to each other by wireless communication such as Bluetooth (registered trademark) or wired communication such as USB.

The X direction and the Y direction shown in FIG. 1 are directions corresponding to the horizontal direction and the depth direction, respectively, for the user of the position detection device 10 . The position detection device 10 has the shape of a rectangle whose side in the Y direction is generally longer than that in the X direction, and as shown in FIG. The present P1 is used in a state mounted on the touch surface 10a. That is, the touch surface 10a of the position detection device 10 is configured to also function as a mounting surface on which a sheet-shaped recording medium is placed so that a plurality of pages are overlapped with each other. be constituted. Although the details will be described later, if the user uses the stylus Sa as a writing implement to write characters or pictures on the surface of the notepad P1, the trajectory of the stylus Sa is detected by the position detection device 10. The system is detected as a series of coordinate data. The touch panel terminal 30 obtains the series of coordinate data from the position detection device 10 , generates stroke data, and displays the data on the touch screen 31 . In FIG. 1, it is directed to "through these processes, the text series of "MAKING IDEAS" entered on the notepad P1 by the user is displayed on the touch screen 31 of the touch panel terminal 30" status for display.

As shown in FIG. 1 , the position detection device 10 includes a power key 11 , a power lamp 12 , a recording medium fixing portion 13 , and a stylus holding portion 14 . The power key 11 is a switch for turning the power of the position detection device 10 ON and OFF. In addition, the power lamp 12 is a lamp which is turned on when the power of the position detection device 10 is turned on and turned off when it is turned off.

The recording medium fixing portion 13 serves as an opening portion, and is configured to be capable of inserting the bottom sheet of the notepad P1, which is an example of a sheet-shaped recording medium. The user fixes the notebook P1 to the position detection device 10 by inserting the bottom sheet of the notebook P1 into the recording medium fixing portion 13 . The stylus holding portion 14 is a pit for fixing the stylus Sa. When the user does not use the stylus Sa, the end portion of the stylus Sa is inserted into the stylus by inserting the clip of the stylus Sa into the recording medium fixing portion 13 . The stylus Sa is fixed to the position detection device 10 in the recess of the holding portion 14 .

As a basic operation, the position detection device 10 is configured to gradually accumulate a series of coordinate data detected successively in one file. Therefore, if the user writes on a plurality of pages while turning over the notepad P1, the coordinate data of the handwriting related to the different pages is included in one file. If a series of coordinate data accumulated in this way is displayed on the touch screen 31 of the touch panel terminal 30, the handwriting related to the plural pages is displayed in a superimposed manner.

Since this cannot be used in practice, the position detection device 10 is configured to identify the page being written by the user, and to perform a similar calculation of the accumulated coordinates every time the page is changed. The additional relationship between the page switching of the data file for changes, etc. and the coordinate data. The page information of the page being written is detected by "pre-writing mutually different identification information (components for page identification) to each page of the notepad P1, and making it possible through electrical interaction. The position detection device 10 reads the identification information" to realize it. According to this, the position detection device 10 can detect the page information of the page being written without providing a protrusion for page detection and without requiring user operation. Therefore, since it is possible to create a file including a series of coordinate data for each of the pages, it is possible to prevent handwriting related to a plurality of pages from being overlapped and displayed on the touch screen 31 .

FIG. 2( a ) is a diagram showing an example of identification information written in advance in each page of the notepad P1 having a total of 5 pages. The identification information according to this example is constituted by making the page a conductive mark M that can be identified with each other. The conductive mark M is formed by arranging (printing) a conductive material on each page in the production stage of the notepad P1, and is formed in a different form on each page. is printed and thus functions as identifying information for each page. In addition, the conductive material used in the printing of the conductive mark M is preferably a transparent material such as ITO (Indium Tin Oxide), but it can also be formed by using an opaque conductive material. Conductivity symbol M. The reading (sensing) of the conductive mark M by the position detection device 10 is performed by the same principle as the detection of the finger by the electrostatic capacitance method. This is done, for example, by generating a heat map representing the location of the electrical conductors within the touch surface 10a, and extracting the conductive marks M therefrom.

If the structure of the conductive mark M shown in FIG. 2( a ) is explained in detail, first, the conductive mark M printed on the first page, which is the uppermost page, is made along the lines for the memo. For the user of this P1, it is composed of 5 diagonal lines lined up on the long side of the left side. The conductive mark M printed on the 2nd page is made by "removing the 4 diagonal lines from the conductive mark M on the 1st page and removing the 1 diagonal line on the lowermost side (user side)" constituted. Hereinafter, similarly, the conductive mark M printed on the nth page (n≧2) is made by "from the conductive mark M on the n-1th page, the lowermost one is slanted. It consists of 6-n slashes removed.

FIG. 2( b ) is a diagram showing the heat map generated by the position detection device 10 when the user is writing to each page of FIG. 2( a ). As shown in the figure, when the user is writing on the first page, for example, the conductors detected by the position detection device 10 are five conductors that are lined up along the left end of the touch surface 10a. The shape of the slash. Also, when the user is writing on the second page, for example, the conductors detected by the position detection device 10 have the shape of four diagonal lines lined up along the left end of the touch surface 10a. Hereinafter, similarly, when the user is writing to the nth page (n≧2), the conductors detected by the position detection device 10 are 6- The shape of n oblique lines. By arranging, for example, the conductors included in each page in this way, the detection results of each page by the position detection device 10 can be made different from each other. Therefore, the user becomes able to identify the page that is being written.

In the position detection device 10, "information representing the position and shape of the conductive mark M printed on each page of the notepad P1" and "the content of the detected conductive mark M ( For example, the number of slashes) and the page being written are added to the correspondence table". The position detection device 10 that generates a heat map as shown in Fig. 2(b), first, by performing a geometry based on "information representing the position and shape of the conductive mark M" memorized in advance Shape matching to extract the conductive marks M contained in the generated heat map. Next, the position detection device 10 detects the page information of the page being written by referring to the correspondence table based on the extracted conductive mark M. Thereby, the position detection device 10 functions as a page turning state detection device.

Table 1 is a diagram showing one example of the correspondence table memorized by the position detection device 10 . In this table, the example of the case where the electroconductive mark M shown in FIG.2(a) is used is shown. The correspondence table resulting from this example, as shown in Table 1, is obtained by adding and corresponding to each other "the number of diagonal lines constituting the conductive mark M" and "the page information of the page being written". constitute. Therefore, the position detection device 10 can detect the page information of the page being written based on the number of diagonal lines included in the conductive mark M extracted from the heat map.

Here, FIG. 3( a ) is a diagram showing another example of identification information written in advance in each page of the notepad P1 with a total of 5 pages, and FIG. 3( b ) is a diagram for the current When the user is writing to each page of FIG. 3( a ), the heat map generated by the position detection device 10 is used as a display image. In this example, the conductive mark M of each page is constituted by only one oblique line, but its positions are different depending on the page. ) same heatmap. Therefore, the position detection device 10 can detect the page information of the page being written by the same process as when the conductive mark M of FIG. 2(a) is used. As described above, the specific aspect of the conductive mark M is not limited to one. That is, it is only necessary to configure a plurality of conductors arranged on a sheet-like recording medium composed of a plurality of pages so as to be capable of being electrostatically detected by the position detection device 10 and capable of writing A plurality of conductors can be arranged on the sheet-like recording medium by means of page entry for identification.

FIG. 4 is a diagram showing the internal structure of the position detection device 10 and the touch panel terminal 30 . As shown in the figure, the position detection device 10 is further provided with a sensor 15 , a sensor controller 16 , a memory 17 and a wireless communication unit 18 . In addition, the touch panel terminal 30 includes a wireless communication unit 32, a stroke builder 33, an editor 34, and a memory 35 in addition to the touch screen 31 shown in FIG. .

The sensor 15 is a projected electrostatic capacitance sensor (PCAP) corresponding to the position detection of the stylus Sa by the active electrostatic method and the position detection of the conductor by the electrostatic capacitance method. ). The sensor 15 is disposed on the side of the back surface of the sheet-like recording medium placed on the placement surface of the position detection device 10, and senses the conductive mark M serving as a page identification member.

FIG. 5 is a diagram showing the detailed structure of the sensor 15 . As shown in the figure, the sensor 15 is configured by including a plurality of linear electrodes 15x and 15y arranged so as to cover the entire touch surface 10a. The plurality of linear electrodes 15x are linear electrodes extending in the Y direction, and are arranged at equal intervals in the X direction orthogonal to the Y direction. The plurality of linear electrodes 15y are linear electrodes extending in the X direction, and are arranged at equal intervals in the Y direction. The plurality of linear electrodes 15x and 15y are connected to the sensor controller 16, respectively.

Back to Figure 4. The sensor controller 16 is a control circuit that uses the sensor 15 to detect the position of the stylus Sa and also to receive the data sent by the stylus Sa, and is controlled by an integrated circuit. be constituted. The position detection of the stylus Sa is performed by an active electrostatic method. In addition, the sensor controller 16 also performs "by using the sensor 15 to detect the position of the conductor in the touch surface 10a to generate the above-mentioned heat map, and based on the result to detect the user The processing of the page information of the page in writing".

The memory 17 is configured as a memory device that manages data in units of files in this example. The sensor controller 16 is configured to combine "coordinate data representing the position of the touch pen Sa detected by the active electrostatic method" and "data received from the touch pen Sa" (hereinafter, collectively referred to as the "Handwritten data") is written into the file in the memory 17 . With this, a series of handwritten data representing the user's handwriting is accumulated in the file. The above-mentioned correspondence table is also stored in the memory 17 .

FIG. 6 is a diagram showing handwritten data output from the sensor controller 16 and a file for storing the handwritten data. The sensor controller 16 according to this example is configured to generate "coordinate data (X, Y) representing the position of the touch pen Sa" and "the pen pressure value P received from the touch pen Sa" And switch information SW1, SW2 (to be described later)" and "time stamp information representing the time T at which the position was detected" are handwritten data, and output to the memory 17 . Hereinafter, the description will be continued on the premise of this example.

The sensor controller 16 is configured such that when the power of the position detection device 10 is turned on, and when the page detected based on the reading result of the identification information is changed (that is, writing is in progress). When there is a page change in the page), a new file is generated in the memory 17. In FIG. 6 , the file of #1 is a file generated in response to the power-on of the position detection device 10 , and the files of #2 and #3 are generated in response to “the page being written”. The file generated by page change". The sensor controller 16, if a new file is generated, changes the output destination of the handwritten data to the file. By doing so, it becomes a file in which handwritten data is sequentially generated for each page. In addition, it is also possible to generate handwritten data covering plural pages as one file by adding and linking "information representing pages" to "handwritten data generated in time series". Furthermore, by attaching and memorizing "information representing the time at which the handwritten data was created (time stamp information)", it becomes possible to efficiently process and edit the handwritten data.

Back to Figure 4. The wireless communication unit 18 is a functional unit that takes out the file stored in the memory 17 and transmits a message to the touch panel terminal 30 . The extraction and transmission of files by the wireless communication unit 18 may be implemented in response to a transmission instruction from the touch panel terminal 30, or may be implemented in response to a position detection device installed in the Executed by the user's operation at the operation means at 10 places. Moreover, when the position detection device 10 and the touch panel terminal 30 are close to each other to a distance that can communicate with each other, it may be configured to automatically execute the transmission. In addition, the wireless communication unit 18 may be configured not to transmit handwritten data in units of files, but to store handwritten data corresponding to one coordinate in the memory every time the sensor controller 16 is used. In 17, the accumulated handwritten data is sent together with information specific to the page on which the handwritten data is written. With such a configuration, handwritten data can be displayed on the touch screen 31 of the touch panel terminal 30 in real time. In this case, the management of files is implemented at the touch panel terminal 30 .

The description is moved to the touch panel terminal 30 , and the wireless communication unit 32 receives the handwritten data from the position detection device 10 and supplies it to the stroke creator 33 . The stroke builder 33 generates stroke data, which is vector data for drawing, based on a series of handwritten data supplied from the wireless communication unit 32 , and stores the stroke data in the memory 35 .

In FIG. 6 , the stroke data stored in the memory 35 by the stroke builder 33 is also shown. As shown in the figure, the stroke data is data including one or more handwritten data, and the stroke builder 33 is configured to integrate one or more stroke data into each file and store it in the memory 35 . middle.

The method of generating the stroke data by the stroke builder 33 will be described in detail. In order to generate stroke data from a series of handwritten data, it is first necessary to determine the separation between strokes. The stroke builder 33 determines the segment by referring to the pen pressure value P in each handwritten data. That is, since the corresponding pen pressure value P is the unit handwritten data below a specific value such as 0, it is obtained when it is in the suspended state, so it is not one that affects the handwriting. . Therefore, the stroke builder 33 excludes such handwritten data from the object of generating the stroke data, and determines the part containing the excluded handwritten data as the segment of the stroke. Then, one stroke data is generated by a group of one or more handwritten data detected according to the segment.

When generating the stroke data, the stroke constructor 33 assigns sequence information to each of a series of generated stroke data by referring to the time stamp information of each handwritten data. In this way, each stroke data in the file stored in the memory 35 is sequentially added with the writing order. In the example of FIG. 6 , the data marked “order n” (n is a natural number) is the order information, and the natural number n represents the writing order.

The editor 34 is configured to include: extracting files stored in the memory 35 , performing rendering processing on each stroke data contained in the files, and displaying the result on the touch screen 31 The above functions, and the function of recognizing the user's touch operation on the touch screen 31 and performing processing corresponding to the content thereof.

Next, the detection of the stylus Sa and the generation of the heat map by the sensor controller 16 will be described in detail.

First, if the detection of the stylus Sa is described with reference to FIG. 5 , the sensor controller 16 is configured to use the plural linear electrodes 15 x (or plural linear electrodes 15 x shown in FIG. 5 ) all of the electrodes 15y), and periodically send the uplink signal. The uplink signal is a signal having the function of "letting the stylus Sa know the timing of sending the downlink signal" and the function of "sending a command to the stylus Sa".

The stylus Sa that has received the uplink signal transmits the downlink signal at the timing shown by the uplink signal. When the stylus Sa has not been paired with the sensor controller 16, the downlink signal is constituted by an unmodulated burst signal of a certain duration. Hereinafter, this burst signal is referred to as a "position signal". On the other hand, when the stylus Sa and the sensor controller 16 are paired with each other, the downlink signal is composed of a position signal and a data signal with a shorter duration. A data signal is a signal that has been modulated by "data instructed by commands contained in the uplink signal". As examples of the data transmitted by the data signal, for example, "the pen pressure value representing the pressure applied to the front end of the stylus Sa", "representing the pressure set on the stylus Sa" "Switch information of the ON and OFF state of the button", "Pen ID pre-stored at the stylus Sa", etc. The above-mentioned pen pressure value P is equivalent to the pen pressure value, and the switch information SW1 and SW2 are equivalent to this switch information.

When the sensor controller 16 has not been paired with the stylus Sa, after sending the uplink signal, the sensor controller 16 scans all of the plurality of linear electrodes 15x and 15y. Touch the entire surface 10a to try to detect the downlink signal sent by the touch pen Sa (global scan). When the downlink signal is detected by this detection process, the sensor controller 16 detects a touch based on the reception strength of the downlink signal at each of the plurality of linear electrodes 15x and 15y The position of the pen Sa, and a specific pairing action is performed between itself and the stylus Sa. By the end of this operation, the sensor controller 16 and the stylus Sa are in a state of being paired with each other.

The sensor controller 16 paired with the stylus Sa, after sending the uplink signal, controls only the last detected touch among the plurality of linear electrodes 15x, 15y. A specific number near the position of the stylus Sa is scanned to try to detect the position signal sent by the stylus Sa by touching only a part of the surface 10a (partial scanning). After that, the position of the stylus Sa is retrieved based on the reception strength of the downlink signal at each of the linear electrodes 15x and 15y. Next, the sensor controller 16 receives a signal by scanning only one of the plurality of linear electrodes 15x and 15y that is located near the position of the stylus Sa detected last. The data signal sent by the stylus Sa. Then, by demodulating the received data signal, the data sent by the touch pen Sa is obtained.

The sensor controller 16 performs processing for determining the state of the touch pen Sa based on the pen pressure value included in the received data signal. Specifically, when the received pen pressure value is 0, the sensor controller 16 determines that the touch pen Sa is in a floating state (a state in which the pen tip is separated from the sheet-like recording medium). On the other hand, when the received pen pressure value is larger than 0, the sensor controller 16 determines that the stylus Sa is in the touch state (the tip of the pen is in the touch state with the touch surface 10a). state of contact). The state of the stylus Sa determined in this way is used to determine the reading timing of the conductive mark M formed of the conductor.

Next, the generation of the heat map will be described. The generation of the heat map by the sensor controller 16 is performed by the same principle as the detection of fingers by the general electrostatic capacitance method. Hereinafter, a detailed description will be given with reference to FIG. 7 .

FIG. 7 is a diagram illustrating the principle of heat map generation by the sensor controller 16 . For simplification, only four linear electrodes 15x are shown in this figure, but in reality, more linear electrodes 15x are arranged. Hereinafter, the description will be continued assuming that the number of the linear electrodes 15x is K.

The sensor controller 16 first supplies the detection signal FDS shown in the figure to each of the linear electrodes 15x. The detection signal FDS is, for example, a signal composed of K signals s ₁ to s _K composed of K pulses represented by "1" or "-1", respectively. The nth (n=1 to K) pulse of each of the signals s ₁ to s _K constitutes a pulse group pn, and each pulse that constitutes one pulse group pn is input in parallel to each linear electrode 15x place.

When the number system of the linear electrodes 15x is four, the signals s ₁ to s _K are composed of four pulses represented by "1" or "-1", respectively. Specifically, as shown in FIG. 7, the signal s ₁ is formed by "1, 1, 1, 1", and the signal s ₂ is formed by "1, 1, -1, -1" The signal s ₃ is formed by "1, -1, -1, 1", and the signal s ₄ is formed by "1-1, 1, -1".

Functionally, the sensor controller 16 includes a shift register 16a and a correlator 16b. The shift register 16a is a memory portion in the form of FIFO, and is configured to store the same number of data (ie, K pieces) as the number of the linear electrodes 15x. When data is newly stored in the shift register 16a, the data stored before K times are deleted. The sensor controller 16 repeatedly performs “in a state where _one linear electrode 15y is selected, successively input the pulse groups p1 to _p4 to each linear electrode 15x” for each linear electrode 15y. action. As a result, at the linear electrode 15y being selected, four levels L ₁ to L ₄ corresponding to the pulse groups p ₁ to p ₄ appear successively. The sensor controller 16 successively obtains the levels L ₁ to L ₄ appearing at the linear electrode 15y in this manner, and successively stores them in the shift register 16a.

The specific content of the levels L ₁ to L ₄ will be described in detail by taking the case where the linear electrode 15y ₁ shown in FIG. 7 is selected as an example. In the following description, the capacitances formed between the linear electrode 15y ₁ and each of the _four linear electrodes _15x1 to 15x4 are set as C ₁₁ to C ₄₁ , respectively.

First, the level L ₁ stored in the shift register 16a corresponding to the pulse group p ₁ is represented by the capacitance vector (C ₁₁ , C ₂₁ , C ₃₁ , C ₄₁ ) and the pulse group p ₁ The inner product between the levels (1, 1, 1, 1). This inner product, as also shown in Figure 7, is calculated as _C11 + _C21 + _C31 + _C41 . Similarly, the level L ₂ stored in the shift register 16a corresponding to the pulse group p ₂ becomes the capacitance vector (C ₁₁ , C ₂₁ , C ₃₁ , C ₄₁ ) and the pulse group p ₁ The inner product between the revealed levels (1, 1, -1, -1), and calculated as C ₁₁ +C ₂₁ -C ₃₁ -C ₄₁ , is stored in the shift buffer corresponding to the burst p ₃ The level L ₃ in the register 16a becomes the difference between the capacitance vector (C ₁₁ , C ₂₁ , C ₃₁ , C ₄₁ ) and the level (1, -1, -1, ₁ ) exhibited by the pulse group p3 The inner product between them is calculated as C ₁₁ -C ₂₁ -C ₃₁ +C ₄₁ , and the level L ₄ stored in the shift register 16a corresponding to the pulse group p ₄ becomes the vector of capacitance ( The inner product between C ₁₁ , C ₂₁ , C ₃₁ , C ₄₁ ) and the level (1, -1, 1, -1) exhibited by burst p ₄ is calculated as C ₁₁ -C ₂₁ +C ₃₁ -C ₄₁ .

The sensor controller 16 uses the correlator 16b to successively calculate and store the levels L ₁ to L in the shift register 16a for each of the four pulse groups p ₁ to p _{4 4} , the correlation value between T ₁ ~T ₄ . The specific content of the correlation values T ₁ to T ₄ calculated in this way, as shown in FIG. 7 , are 4C ₁₁ , 4C ₂₁ , 4C ₃₁ , and 4C ₄₁ , respectively. That is, in the correlation values T ₁ to T ₄ , changes in capacitances formed at intersections between the linear electrodes 15x ₁ to 15x ₄ and the linear electrodes 15y ₁ are reflected, respectively.

The sensor controller 16 calculates correlation values T ₁ to T ₄ for each of the linear electrodes 15y. Afterwards, the above heatmap is generated by mapping the calculated results to the plane. With this, the generation of the heatmap ends.

Above, the detection of the stylus Sa and the generation of the heat map by the sensor controller 16 have been described in detail. Next, while referring to the flowchart of the processing performed by the sensor controller 16, the sensor controller 16 is directed to the processing including "detecting the page information of the page being written based on the generated heat map". The overall flow of the processing will be explained in detail.

FIG. 8 is a flowchart of the processing performed by the sensor controller 16 . In this figure, it is for "in the state where the notepad P1 is placed on the touch surface 10a, the power key 11 shown in FIG. 1 is pressed, and the power supply of the position detection device 10 is turned on." processing is shown.

If the power of the position detection device 10 is turned on, in this example, the sensor controller 16 first generates a heat map (step S1 ). The specific method of this generation is the same as above. Next, the sensor controller 16 detects the page information of the page the user is writing based on the generated heat map (step S2). The specific method of this generation is also the same as above. In step S2, the sensor controller 16 also performs a process of temporarily storing the information representing the detected page in the memory 17. In addition, the sensor controller 16 performs the process of "generating a file for writing handwritten data and writing it into the memory 17" (step S3).

Next, the sensor controller 16 sends the uplink signal (step S4). Next, it is determined whether the stylus Sa has been paired with each other (step S5 ). If it is paired, the global scan is performed (step S6 ). If the pairing has not been completed, the partial scan is performed (step S8 ) and the data signal is received (step S8 ). Step S9).

After performing step S6, the sensor controller 16 writes the coordinate data representing the detected position into the file generated at step S3 (step S7). In this case, the information other than the coordinate data and the time stamp information becomes null. On the other hand, after performing steps S8 and S9, the sensor controller 16 writes the detected position and the received data into the file generated at step S3 (step S10), And the state of the touch pen Sa (floating state or touching state) is determined based on the received pen pressure value (step S11, determination step).

After the completion of step S7 or step S11, the sensor controller 16 next determines whether the floating state or the unpaired state has continued for a specific time (step S12). The sensor controller 16, which has obtained a negative determination result, returns to step S4 and continues processing. On the other hand, the sensor controller 16, which has obtained a positive determination result, generates a heat map by detecting the position of the conductor in the touch surface 10a (step S13, the position detection step), and based on The generated heat map is used to detect the page information of the page the user is writing (step S14). The details of the processing of steps S13 and S14 are the same as the processing of the above-mentioned steps S1 and S2. After that, the sensor controller 16 compares the "page detected at step S14" with "based on the information temporarily stored in the memory 17 at step S2 or the previous step S14" The displayed page" is compared to determine whether the page being written has been changed (step S15).

When it is determined in step S15 that there is no change, the sensor controller 16 returns to step S4 and continues processing. On the other hand, when it is determined in step S15 that there is a change, the sensor controller 16 additionally generates a new file for writing the handwritten data, and writes it into the memory 17 (step S16 ) ). After that, the new file created in this way becomes the target of writing in steps S7 and S10.

As described above, according to the position detection device 10 according to the present embodiment, the sensor controller 16 reads the information of each page through the electrostatic capacitive interaction with the conductive mark M. The identification information is used to detect the page information of the page being written based on the result. Therefore, it is possible not to provide a protruding portion for page detection at the touch surface 10a, nor to use optics or magnetism. The detection means is a sensor that reads symbols such as two-dimensional codes, and does not require user operation to detect the page information of the page being written. In addition, the sensor 15 for detecting handwritten information may be configured to be able to detect the conductive mark M in common.

In addition, according to the position detection device 10 according to the present embodiment, the sensor controller 16 is used when the stylus Sa is in a floating state, or when there is no touch that has been paired with each other. In the case of the stylus Sa, since the detection process of the written page is executed, it is possible to appropriately perform the page detection process at the timing when there is a possibility that the user is turning the page.

In addition, according to the position detection device 10 according to the present embodiment, not only the fact that the page being written is changed, but also the page number of the page being written can be specified. Therefore, the sensor controller 16 can also attach the specified page number to the file stored in the memory 17 as the metadata. In this way, in the application program of the touch panel terminal 30, it becomes possible to perform processing corresponding to the page number of the notepad P1.

Next, the position detection device 10 according to the second embodiment of the present invention will be described. FIG. 9 is a diagram showing the internal structure of the position detection device 10 and the touch panel terminal 30 according to the second embodiment of the present invention. As shown in the figure, the position detection device 10 according to the present embodiment includes a sensor controller 16 , a memory 17 , a wireless communication unit 18 , sensors 20 and 21 , and a reading unit 22 , and constitute it. The configuration of the touch panel terminal 30 is the same as that of the first embodiment.

As can be understood by comparing FIG. 9 with FIG. 4 , the position detection device 10 according to the present embodiment is provided with sensors 20 and 21 instead of the sensor 15 , and in addition to the sensor controller In addition to 16, a reading section 22 is also provided, and in this point, it is different from the position detection device 10 according to the first embodiment. In addition, in the present embodiment, instead of the touch pen Sa corresponding to the active electrostatic system, a touch pen Sb corresponding to the electromagnetic induction system (EMR) is used. Since other configurations are the same as the position detection device 10 according to the first embodiment, the following description will focus on the differences from the position detection device 10 according to the first embodiment.

The sensor 20 is a sensor corresponding to the electromagnetic induction method detected by the touch pen Sb. In addition, the sensor 21 is a projection type electrostatic capacitance type sensor (PCAP) corresponding to the position detection of the conductor by the electrostatic capacitance method. The sensor 20 is used to detect the stylus Sb, and the sensor 21 is used to read the identification information of each page.

FIG. 10 is a diagram showing the detailed structures of the sensors 20 and 21 and the stylus Sb. As shown in FIG. 10, the sensors 20, 21 are arranged side by side along the X direction. In addition, the sensor 21 is arranged on the left side of the sensor 20 when viewed from the user. Thereby, it is possible to use a sheet-like recording medium having a configuration in which conductive marks M are formed along the left side when viewed from the user, as in the notebook P1 shown in FIG. 3 . . In addition, the stylus pen Sb is provided with the LC resonance circuit which consists of the capacitor|condenser 50 and the inductance 51, and is comprised.

First, if attention is paid to the stylus pen Sb, the inductor 51 functions to generate an induced voltage in response to the magnetic field supplied from the sensor 20 and to charge the capacitor 50 . After the supply of the magnetic field from the sensor 20 is stopped, the inductor 51 uses the voltage accumulated in the capacitor 50 to send a signal back to the sensor 20 . The loopback signal includes a continuous signal for position detection, a start signal representing the end of the continuous signal, and side switch information in sequence.

The capacitor 50 is constituted so as to change its capacitance based on the pressure (=pen pressure value) applied to the tip of the stylus pen Sb. Since the resonant frequency of the resonant circuit will change if the capacitance of the capacitor 50 changes, the frequency of the loopback signal sent as described above also changes with the pen pressure value. The sensor controller 16 according to the present embodiment obtains the pen pressure value from the stylus pen Sb by detecting the frequency change.

Next, if attention is paid to the sensors 20 and 21, first, the specific configuration of the sensor 21 is the same as that of the first embodiment except that the width in the X direction is narrowed. The illustrated sensor 15 is the same. The reading unit 22 generates a heat map by the same processing as the processing of the sensor controller 16 described in the first embodiment, and writes it into a specific area in the memory 17 .

On the other hand, since the sensor 20 is of the electromagnetic induction type, it has a structure different from that of the sensor 15 of the electrostatic capacitance type. Hereinafter, referring to FIG. 10 , the structure of the sensor 20 and the detection of the stylus Sb by the sensor controller 16 using the sensor 20 will be described in detail.

The sensor 20, as shown in FIG. 10, has a configuration in which a plurality of loop coils LC are arranged in a rectangular planar area. The plural loop coils LC include plural loop coils LC extending in the Y direction and plural loop coils LC extending in the X direction. One end of each loop coil LC is grounded, and the other end is connected to the sensor controller 16 .

The sensor controller 16 sequentially selects one at a time from the plurality of loop coils LC, and supplies a current signal to the selected loop coil LC. In this way, a magnetic field is generated around the loop coil LC, and an induced voltage is generated at the inductor 51 in the stylus Sb located in the magnetic field. The sensor controller 16 stops the supply of the current signal after a certain time has elapsed from the start of the supply of the current signal. In this way, the magnetic field generated around the loop coil LC is eliminated, and the transmission of the above-mentioned return signal from the stylus pen Sb is started. The sensor controller 16 detects the position of the stylus pen Sb based on the signal strength of the loopback signal transmitted in this way at each loop LC, and decodes the loopback signal by decoding the loopback signal. , and obtain the data sent by the touch pen Sb (including the pen pressure value).

FIG. 11 is a flowchart of the processing performed by the sensor controller 16 according to the present embodiment. In this figure, the same is true for "in a state where the notepad P1 is placed on the touch surface 10a, the power key 11 shown in FIG. 1 is pressed, and the power supply of the position detection device 10 is The processing after turning ON" is displayed.

When the power supply of the position detection device 10 is turned on, first, the generation of the heat map is performed by the reading unit 22 (step S20). As described above, the reading unit 22 stores the generated heat map in a specific area of the memory 17 . After that, the reading unit 22 continuously updates the information in the specific area of the memory 17 by periodically generating a heat map.

The sensor controller 16 obtains a heat map from a specific area of the memory 17 (step S21). Then, based on the obtained heat map, the page information of the page being written is detected (step S22 ), and a file for writing the handwritten data is generated (step S23 ). The details of the processing of steps S22 and S23 are the same as the processing of steps S2 and S3 shown in FIG. 8 .

Next, the sensor controller 16 detects the position of the stylus pen Sb (step S24). The details of this position detection are the same as above, and as a result, "coordinate data representing the position of the stylus pen Sb" and "data sent by the stylus pen Sb (including the pen pressure value)" are obtained. The sensor controller 16 writes the detected position and the obtained data in the file generated at step S23 (step S25).

Next, the sensor controller 16 obtains the heat map again from a specific area of the memory 17 (step S26). Then, based on the obtained heat map, the page information of the page being written is detected (step S27). The details of the processing of steps S26 and S27 are the same as the processing of steps S21 and S22 described above. After that, the sensor controller 16 temporarily stores the information in the memory 17 based on the "page information detected at step S27" and "based on the information at step S22 or the previous step S27" The displayed page information" is compared to determine whether the page being written has been changed (step S28).

When it is determined in step S28 that there is no change, the sensor controller 16 returns to step S24 and continues processing. On the other hand, when it is determined in step S28 that there is a change, the sensor controller 16 additionally generates a new file for writing the handwritten data, and writes it into the memory 17 (step S29 ). ). After that, the new file created in this way becomes the object of writing in step S25.

As described above, according to the position detection device 10 according to the present embodiment, since the reading section 22 reads the identification information of each page through the electrical interaction with the conductive mark M, The sensor controller 16 detects the page information of the page being written on the basis of the result, so it is possible not to provide a protruding part for page detection at the touch surface 10a, nor to use an optical The detection means of sex or magnetism or the sensor that reads symbols such as two-dimensional codes, and also does not require user operation, to detect the page information of the page being written.

In addition, according to the position detection device 10 according to the present embodiment, the "sensor 21 used for generating the heat map" and the "sensor used for reading the stylus pen Sb" 20" are set independently of each other, therefore, electromagnetic induction (EMR) can be used in the detection of the stylus pen Sb, and even when the stylus pen Sb is in a floating state, it can be uninterrupted. to continuously detect the position of the stylus Sb.

Furthermore, according to the position detection device 10 according to the present embodiment, since the function of the sensor 21 is limited to the generation of the heat map, it is possible to use a sensor optimized for the generation of the heat map. Tester 21. Specifically, the sampling frequency of the detection signal FDS is higher than that of a conventional sensor, and therefore, a sensor with better sensitivity can be used. In addition, in order to reduce the influence of parasitic capacitance, it is possible to simultaneously respond to the operation of "supplying the detection signal FDS to the linear electrode 15x, and receiving the signal by the linear electrode 15y" and "supplying the detection signal to the linear electrode 15y". Using the signal FDS, and the wire-shaped electrode 15x for receiving and switching the action, a heat map is generated.

In addition, even according to the position detection device 10 according to the present embodiment, the same as the position detection device 10 according to the first embodiment, not only can it identify that the page being written is changed, but It also becomes the page number that can identify the page being written. Therefore, the sensor controller 16 can also attach the specified page number to the file stored in the memory 17 as the metadata. In this way, in the application program of the touch panel terminal 30, it becomes possible to perform processing corresponding to the page number of the notepad P1.

Next, the position detection device 10 according to the third embodiment of the present invention will be described. FIG. 12 is a diagram showing the internal structure of the position detection device 10 and the touch panel terminal 30 according to the third embodiment of the present invention. As shown in the figure, the position detection device 10 according to the present embodiment includes a sensor controller 16 , a memory 17 , a wireless communication unit 18 , a sensor 20 , and an IC tag reader 23 , and constitute it. The configuration of the touch panel terminal 30 is the same as that of the first and second embodiments.

As can be understood by comparing FIG. 12 with FIG. 9 , the position detection device 10 according to the present embodiment does not include the sensor 21 and the reading unit 22 , but has an IC tag on the other hand. The reader 23 is different from the position detection device 10 according to the second embodiment in this point. Moreover, in this embodiment, instead of the conductor (conductive mark M), the information written in the IC tag R is used as identification information of each page. Since other configurations are the same as the position detection device 10 according to the second embodiment, the following description will focus on the differences from the position detection device 10 according to the second embodiment.

First, FIG. 13 is a diagram showing the sheet-like recording medium P2 according to the present embodiment and the method of writing identification information to the sheet-like recording medium P2. The sheet-like recording medium P2 according to the present embodiment is a collection of single sheets that are not bundled, and typically, is printer paper. IC tags R are embedded in advance on each page of the sheet-like recording medium P2.

In Fig. 13, an example is shown for the case of "in the junior high school, the teacher prepares the answer sheet for the examination". The teacher in this example uses a computer 70 such as a personal computer to create a manuscript, and uses the printer 60 to print, thereby creating an educational teaching material (answer sheet) according to the present embodiment. The printer 60 is provided with an IC tag writer 62 for writing on the IC tag R in the vicinity of the paper discharge port 61 from which the printed paper is discharged, and is configured to be compatible with the printing operation. At the same time, identification information is written to the IC tag R of each page. Hereinafter, with reference to the functional blocks of the printer 60, a more detailed description will be given for the preparation of the answer sheet.

FIG. 14 is a schematic block diagram showing the functional blocks of the printer 60 . As shown in the figure, the printer 60 is configured by including a control unit 63 and a reception unit 64 in addition to the IC tag writer 62 shown in FIG. 13 .

The IC tag writer 62 is configured to have a function of writing identification information to the IC tag R. As shown in FIG. The receiving unit 64 is connected to the computer 70 by wire or wireless, and has a function of sending and receiving various signals between itself and the computer 70 . The signal sent from the computer 70 to the receiving unit 64 includes a print signal representing the content of printing and identification information for writing in the IC tag R. The receiving unit 64 is composed of To output the received print signal and identification information to the control unit 63 .

The control unit 63 is the central processing unit of the printer 60, and performs "printing on the paper in response to the printing signal supplied from the receiving unit 64, and prints on the paper embedded in the paper. The IC tag R uses the IC tag writer 62 to write the identification information supplied from the receiving unit 64 ".

The teacher who wants to create the answer sheet, at the computer 70, uses the document creation software to create a manuscript of the answer sheet including the name column and the answer column, and uses the spreadsheet software to write the student's name and the IC tag. The identification information of each page in R has a corresponding correspondence table attached to each other. Afterwards, for example, using the merge printing function of the document creation software, for each record of the corresponding table, a printing signal including the corresponding student name in the above manuscript is generated, and the corresponding The identification information is output to the printer 60 together. The printer 60 that receives this generates an answer sheet including a plurality of pages on which identification information different from each other is written by performing printing and writing to the IC tag R in the same manner as described above.

Returning to FIG. 12, the structure of the position detection apparatus 10 by this embodiment is demonstrated in detail. First, the sensor 20, as described in the second embodiment, is a sensor corresponding to the electromagnetic induction method of detection by the stylus pen Sb. However, since the sensor 21 is not provided, the sensor 20 according to the present embodiment is provided to cover the entire touch surface 10a. Therefore, the user can perform entry to the sheet-like recording medium with the entire touch surface 10a. In addition, instead of the sensor 20, the sensor 15 of the electrostatic capacitance method described in the first embodiment may be used.

The IC tag reader 23 reads the identification information of each page through the electrical interaction with the IC tag R, and performs the process of writing the result into a specific area in the memory 17 . This reading is performed periodically like the reading by the reading unit 22 described in the second embodiment.

FIG. 15 is a flowchart of the processing performed by the sensor controller 16 according to the present embodiment. In this figure, the same is true for "in a state where the notepad P1 is placed on the touch surface 10a, the power key 11 shown in FIG. 1 is pressed, and the power supply of the position detection device 10 is The processing after turning ON" is displayed.

When the power supply of the position detection device 10 is turned on, first, the reading of the identification information from the IC tag R is performed by the IC tag reader 23 (step S30). As described above, the IC tag reader 23 stores the read identification information in a specific area of the memory 17 . After that, the IC tag reader 23 continuously updates the information in the specific area of the memory 17 by periodically reading the identification information from the IC tag R.

The sensor controller 16 obtains identification information from a specific area of the memory 17 (step S31). Then, based on the acquired identification information, the page information of the page being written is detected (step S32 ), and a file for writing the handwritten data is generated (step S33 ). In step S32 , the sensor controller 16 also performs a process of temporarily storing the information representing the detected page in the memory 17 .

Next, the sensor controller 16 detects the position of the stylus pen Sb (step S34). The detected position and the obtained data are written into the file generated at step S33 (step S35). The details of the processing of steps S34 and S35 are the same as the processing of steps S24 and S25 shown in FIG. 11 .

Next, the sensor controller 16 obtains the identification information again from the specific area of the memory 17 (step S36). Then, based on the acquired identification information, the page information of the page being written is detected (step S37). The details of the processing of steps S36 and S37 are the same as the processing of steps S31 and S32 described above. After that, the sensor controller 16 compares "the page detected at step S37" with "based on the information temporarily stored in the memory 17 at step S32 or the previous step S37" The displayed page" is compared to determine whether the page being written has been changed (step S38).

When it is determined in step S38 that there is no change, the sensor controller 16 returns to step S34 and continues processing. On the other hand, when it is determined in step S38 that there is a change, the sensor controller 16 additionally generates a new file for writing the handwritten data, and writes it into the memory 17 (step S39 ). ). After that, the new file created in this way becomes the object of writing in step S35.

As described above, according to the position detection device 10 according to the present embodiment, the identification information of each page is read by the IC tag reader 23 through the electrical interaction with the IC tag R , the sensor controller 16 detects the page information of the page being written based on the result, so it is possible not to set a protruding part at the touch surface 10a for page detection, nor to use Optical or magnetic detection means or sensors that read symbols such as two-dimensional codes, and do not require user operation, can detect the page information of the page being written.

Furthermore, according to the position detection device 10 according to the present embodiment, since the "IC tag reader 23 for reading identification information" and the "sensor controller 16" are different devices, so In the same way as in the second embodiment, the electromagnetic induction method (EMR) can be used for the detection of the stylus pen Sb, and even when the stylus pen Sb is in the floating state, the detection can be performed without interruption. The position of the stylus pen Sb is continuously detected.

Furthermore, according to the printer 60 according to the present embodiment, since the user can write the identification information in the IC tag R of each page, even if it is an answer sheet like an exam, it is not used. The bundled sheet-like recording medium can also be applied to the present invention. Therefore, for example, in the case of "the teacher collects answer sheets from a plurality of students, puts them on the touch panel 10a in batches, and opens them one at a time for grading", the teacher's department can enter the representative into each The handwritten data of the content in the answer sheet is integrated into one file for each answer sheet, and accumulated in the memory 35 one by one.

In addition, the sensor controller 16 according to the present embodiment can also be configured to add the acquired identification information to the file stored in the memory 17 as the metadata. In addition, the touch panel terminal 30 can also be configured to obtain the above-mentioned correspondence table (a table in which the student's name and the identification information of each page written in the IC tag R are added to each other) from the computer 70, The identifying information attached to the file is converted into the student's name. With such a configuration, the teacher can confirm the handwritten data written on the answer sheet by himself/herself in the application program of the touch panel terminal 30 , in association with the name of the student who created the answer sheet.

Although the ideal embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Of course, the present invention can be within the scope of not departing from the gist of the present invention. , and implemented in various forms.

For example, in each of the above-mentioned embodiments, the sensor controller 16 in the position detection device 10 is configured to detect the page information of the page being written, and to perform the processing of dividing the file. It may also be configured that only a part of these processes are performed at the position detection device 10 , and the rest of the processes are performed at the touch panel terminal 30 . If a specific example is given, the sensor controller 16 can also be configured to send information representing the page being written to the touchpad terminal 30, and the touchpad terminal 30 can send information representing the page being written based on the information. The received information is used to split the file.

Also, in the first and second embodiments, as an example of a sheet-like recording medium, the description was made for an example of using a notepad P1 having a binding portion located at the upper part, but for a magazine such as a magazine A normal folio format, that is, each page is a sheet-like recording medium composed of a right page portion and a left page portion, can also be applied. In this case, the conductive mark M may be arranged on either the right page portion or the left page portion.

10: Position detection device 10a: touch face 11: Power button 12: Power light 13: Recording medium fixing part 14: Stylus holding part 15,21: Projected electrostatic capacitance sensor 15x, 15y: wire electrodes 16: Sensor Controller 16a: Shift register 16b: Correlator 17: Memory 18: Department of Wireless Communications 20: Sensors of Electromagnetic Induction 22: Reading section 23: IC Tag Reader 30: Touchpad Terminal 31: Touch screen 32: Department of Wireless Communications 33: Stroke Builder 34: Editor 35: Memory 50: Capacitor 51: Inductance 60: Printer 61: Paper outlet 62: IC label writer 63: Control Department 64: Reception Department 70: Computer FDS: Signal for detection LC: Loop Coil M: Conductivity mark P: pen pressure value P1: Notepad P2: sheet-like recording medium R:IC Label Sa: Active electrostatic stylus Sb: Electromagnetic induction stylus SW1,SW2: switch information

FIG. 1 is a diagram showing the position detection device 10 and the touch panel terminal 30 according to the first embodiment of the present invention. [ FIG. 2 ] (a) is a diagram showing an example of identification information written in advance in each page of the notepad P1 having a total of 5 pages, and (b) is a diagram for when the user is ), the heat map generated by the position detection device 10 is used as a display map when each page of ) is written. [FIG. 3](a) is a diagram showing another example of identification information written in advance in each page of the notepad P1 with a total of 5 pages, and FIG. 3(b) is a diagram for when the user is When writing to each page of FIG. 3( a ), the heat map generated by the position detection device 10 is used as a display diagram. FIG. 4 is a diagram showing the internal configuration of the position detection device 10 and the touch panel terminal 30 . [ FIG. 5 ] is a diagram showing the detailed configuration of the sensor 15 . 6 is a diagram showing the handwritten data output from the sensor controller 16 and the file for storing the handwritten data and the stroke data stored in the memory 35 by the stroke builder 33 . [ FIG. 7 ] is a diagram showing the principle of heat map generation by the sensor controller 16 . 8 is a flowchart of the processing performed by the sensor controller 16 according to the first embodiment of the present invention. 9 is a diagram showing the internal configuration of the position detection device 10 and the touch panel terminal 30 according to the second embodiment of the present invention. 10 is a diagram showing the detailed configuration of the sensors 20 and 21 and the stylus pen Sb. FIG. 11 is a flowchart of the processing performed by the sensor controller 16 according to the second embodiment of the present invention. 12 is a diagram showing the internal configuration of the position detection device 10 and the touch panel terminal 30 according to the third embodiment of the present invention. 13 is a diagram showing a sheet-like recording medium P2 according to the third embodiment of the present invention and a method of writing identification information to the sheet-like recording medium P2. FIG. 14 is a schematic block diagram showing the functional blocks of the printer 60 . FIG. 15 is a flowchart of processing performed by the sensor controller 16 according to the third embodiment of the present invention.

10: Position detection device

10a: touch face

11: Power button

12: Power light

13: Recording medium fixing part

14: Stylus holding part

30: Touchpad Terminal

31: Touch screen

P1: Notepad

Sa: Active electrostatic stylus

Claims (13)

A position detection device is provided with a placement surface on which a sheet-like recording medium composed of a plurality of pages is placed on top of each other, the position detection device corresponds to a touch-sensitive The handwriting operation on the sheet-like recording medium placed on the placing surface by the pen detects the position indicated by the stylus pen, and the stylus pen is configured to be capable of The above-mentioned sheet-like recording medium is placed on the surface to perform visually recognizable handwriting, The position detection device is characterized in that it is provided with: A sensor senses a page identification member for identifying each page that constitutes the above-mentioned sheet-like recording medium placed on the above-mentioned placing surface. plural pages; and The control circuit is connected to the aforementioned sensor, The member for page identification is constituted by a conductor, and the sensor is configured to detect the conductor by an electrostatic capacitance method, The control circuit is configured to be able to respond to the detection of the conductors arranged in the sheet-like recording medium by the sensor, and to respond to the target page of the handwriting operation by the touch pen. for identification. The position detection device as recited in claim 1, wherein, The sensor is configured to detect the electrical conductor arranged in the sheet-like recording medium, and to detect the contact with the sheet-like sheet mounted on the mounting surface caused by the touch pen. The position corresponding to the handwriting operation of the recording medium. The position detection device as recited in claim 1, wherein, It is configured to detect the contact with the object caused by the stylus pen by a sensor having a different detection method from the sensor that detects the conductor arranged in the sheet-like recording medium. The position corresponding to the handwriting operation of the sheet-like recording medium mounted on the mounting surface. The position detection device as recited in claim 3, wherein, The sensor that detects the position corresponding to the handwriting operation on the sheet-like recording medium mounted on the mounting surface by the touch pen is configured to detect by electromagnetic induction. out location. The position detection device according to any one of claims 1 to 4, wherein, The position detection device is configured to be able to detect that the stylus pen is in a state of being separated from the sheet-like recording medium placed on the placement surface, The control circuit is configured to be able to correspond to the arrangement by the sensor in a state where the stylus pen is separated from the sheet-like recording medium placed on the placement surface The detection of the electrical conductor in the sheet-like recording medium is used to identify the target page of the handwriting operation by the stylus. The position detection device as recited in claim 5, wherein, The stylus pen is configured to be able to detect the writing pressure, and the position detection device is configured to be able to acquire the writing pressure, The control circuit is configured to detect, based on the detected pen pressure, that the touch pen is in a state of being separated from the sheet-like recording medium placed on the placement surface . The position detection device as recited in claim 5, wherein, The control circuit is configured so as to correspond to the fact that the stylus has been separated from the sheet-like recording medium mounted on the mounting surface for a specific time period, to respond to the The object page of the handwriting operation caused by the aforementioned stylus is identified. A page detection method for detecting a page corresponding to a handwriting operation by a touch pen on a sheet-like recording medium placed on a placement surface on which the placement surface is placed so that the The sheet-like recording medium in which a plurality of the pages are overlapped with each other, and the stylus is configured to be able to visually recognize handwriting on the sheet-like recording medium placed on the mounting surface, The page detection method is characterized by: Corresponding to the fact that the stylus pen is separated from the sheet-like recording medium mounted on the mounting surface, and is sensed by electrostatic capacitance to identify each page. A page identification member composed of a conductor, each of which constitutes the plurality of pages arranged on the sheet-like recording medium placed on the placement surface, The structure is configured to be capable of recognizing the target page of the handwriting operation by the stylus pen in response to the detection of the conductors arranged in the sheet-like recording medium by the sensor. A sheet-like recording medium composed of a plurality of pages overlapping each other, characterized by: It is used together with a page-turning state detection device, and the page-turning state detection device is provided with a mounting surface on which the sheet-like recording medium is placed, and which is used to detect each page of the sheet-like recording medium. The electrostatic sensor for identification, The sheet-like recording medium is provided with a page identification member for identifying each of the pages constituting the plurality of pages, and the page identification member is constituted by a conductor, and is constituted by this. The page corresponding to the page turning of the sheet-like recording medium constituted so that a plurality of pages are overlapped with each other can be recognized based on the detection state of the electrical conductor by the electrostatic sensor. The sheet-like recording medium according to claim 9, wherein, Each page consists of a right page part and a left page part. The sheet-like recording medium according to claim 9, wherein: At least one of the conductors arranged on each of the first page of the plurality of pages and the second page different from the first page, is that the first page and the second page are mutually They are arranged in the same position in an overlapping state. The sheet-like recording medium according to claim 9, wherein: The conductors arranged on each of a first page constituting the plurality of pages and a second page different from the first page are in a state where the first page and the second page overlap each other Instead, they are arranged in mutually different positions. The sheet-like recording medium according to claim 9, wherein, The said conductor is arrange|positioned at the specific position of each of the said plural pages by the manufacturing method of printing.

Images