JP2009237825A - Handwriting information creation device and handwriting information management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably transmit handwriting information created by a handwriting information creation device to an external device. <P>SOLUTION: A pen main unit 60A includes a pen chip 64 forming handwriting corresponding to a writing operation by a user on a medium with a code image printed thereon, and a controlling/processing unit 61 reading the code image of a position on a medium on which the handwriting is formed with the chip 64 and creating handwriting information that is information related to the writing operation by the user on the basis of the code image. An entire or a part of a communication unit 66 wirelessly transmitting the handwriting information created by the controlling/processing unit 61 to a terminal device is arranged at a cap unit 60B freely detachably mounted on the main unit 60A in order to protect the chip 64. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a handwriting information generation device and a handwriting information management system.

2. Description of the Related Art In recent years, attention has been paid to a technique in which characters, figures, and the like written on a medium such as paper are converted into electronic data, which is transferred to a personal computer, a mobile phone, etc., and the written contents are stored.
For example, in the technique described in Patent Document 1, characters written with a pen device using a medium on which code images of various patterns with fine dots are printed and a pen device having an image pickup device, for example, A code image at a position such as a figure is read into the image sensor. Thereby, the position coordinates of characters and figures are specified, and an electronic document composed of written characters and figures is generated, and characters and figures are added to a predetermined electronic document.
For example, in the technique described in Patent Document 2, a code image printed on a predetermined area on a medium is read by a pen device, for example, a command for instructing a computer to open a web browser program is created. Link to a predetermined web address.

JP 2004-94907 A Special table 2003-523572 gazette

Here, in general, a pen-type handwriting information generation apparatus that reads handwriting formed on a medium and generates handwriting information is provided with a protective cap for protecting the pen shaft for writing. At the time of writing operation, the protective cap is removed from the pen shaft side of the handwriting information generating apparatus body, and is usually mounted and stored on the end side opposite to the pen shaft side. However, the handwriting information generating device body on the end side opposite to the pen shaft side is provided with a communication function unit for transmitting the generated handwriting information to the external device, and a protective cap is attached. As a result, communication with external devices may become unstable.
An object of the present invention is to stably transmit handwriting information generated by a handwriting information generation device that generates handwriting information to an external device.

  The invention according to claim 1 is a writing unit that forms a handwriting corresponding to a user's writing operation on a medium on which a code image is printed, and the code at a position on the medium where the handwriting is formed by the writing unit. Read the image, handwriting information generating means for generating handwriting information that is information related to the user's writing operation based on the code image, an apparatus main body portion in which the writing part and the handwriting information generating means are arranged, A protective cover part that is detachably attached to the apparatus main body part and protects the writing part, and the protective cover part wirelessly transmits the handwriting information generated by the handwriting information generating means to an external device. This is a handwriting information generation device characterized in that all or part of the wireless transmission means is arranged.

According to a second aspect of the present invention, the apparatus main body is generated by the handwriting information generation means in a state where the protective cover is attached to an end of the apparatus main body on the side where the writing unit is disposed. A first output terminal for outputting the handwritten information to the wireless transmission means, and a state in which the protective cover part is attached to an end of the apparatus main body opposite to the side where the writing part is disposed And a second output terminal for outputting the handwriting information to the wireless transmission means, and the protective cover portion is disposed at an end portion of the apparatus main body portion on the side where the writing portion is disposed. The second output terminal connected to the first output terminal in the mounted state and mounted to the end of the apparatus main body opposite to the side where the writing unit is disposed. 2. An input terminal to be connected is arranged. It is a handwriting information generating device.
The invention according to claim 3 stores the handwriting information output control means for controlling the output destination of the handwriting information generated by the handwriting information generation means, and the handwriting information generated by the handwriting information generation means. And the handwriting information output control means includes: the input terminal arranged in the protective cover part; and the first output terminal or the second output terminal arranged in the apparatus main body part. The handwriting information generating apparatus according to claim 2, wherein the handwriting information generated by the handwriting information generating unit is output to the storage unit in a state where and are not connected.

In the invention according to claim 4, the handwriting information output control means outputs the handwriting information generated by the handwriting information generation means in a state where communication between the wireless transmission means and the external device is not established. 4. The handwriting information generation apparatus according to claim 3, wherein the handwriting information generation apparatus outputs the data to a storage unit.
According to a fifth aspect of the present invention, the handwriting information output control means includes the input terminal arranged in the protective cover part, and the first output terminal or the second output arranged in the apparatus main body part. Output the handwriting information generated by the handwriting information generation means to the wireless transmission means in a state where a terminal is connected and communication between the wireless transmission means and the external device is established. The handwriting information generation apparatus according to claim 3, wherein:
The invention according to claim 6 is characterized in that the apparatus main body portion is configured to be capable of mounting a plurality of the protective cover portions in which all or part of the wireless transmission means having different communication methods are arranged. A handwriting information generation apparatus according to claim 1.
The invention according to claim 7 is characterized in that the protective cover portion includes an antenna portion that constitutes a part of the wireless transmission means and that transmits a signal wirelessly to the external device. It is a handwriting information generation apparatus of description.

  The invention according to claim 8 is a handwriting information generating device that generates handwriting information that is information related to a user's writing operation on a medium on which a document image and a code image based on an electronic document are printed, and the handwriting information The handwriting information generated by the generation device is acquired, and the acquired handwriting information is managed in association with the medium or the electronic document printed on the medium. An information transmission device that acquires handwriting information and transmits the acquired handwriting information to the handwriting information management device, wherein the handwriting information generation device forms a handwriting corresponding to the user's writing operation on the medium. A handwriting information generating unit that reads the code image at a position on the medium where the handwriting is formed by the writing unit, and generates the handwriting information based on the code image; An apparatus main body in which a writing part and the handwriting information generating means are arranged, and a protective cover part that is detachably attached to the apparatus main body part and protects the writing part. The handwriting information management system is characterized in that all or part of wireless transmission means for wirelessly transmitting the handwriting information generated by the handwriting information generation means to the information transmitting device is arranged.

The invention according to claim 9 is the handwriting information generation device, wherein the handwriting information generation device is configured such that the protection cover portion is attached to an end portion of the device main body portion on the side where the writing portion is disposed. A first output terminal for outputting the handwriting information generated by the information generating means to the wireless transmitting means, and an end of the protective cover portion opposite to the side where the writing portion of the apparatus main body is disposed; And a second output terminal that outputs the handwriting information to the wireless transmission means in a state of being attached to the part, and the protective cover part of the handwriting information generating device is configured such that the protective cover part is a part of the apparatus main body part. Connected to the first output terminal in a state of being attached to the end portion on the side where the writing portion is disposed, and on the end portion on the opposite side of the device body portion from the side on which the writing portion is disposed. Input connected to the second output terminal in a mounted state Children are handwriting information management system according to claim 8, characterized in that it is arranged.
The handwriting information generation device generates the handwriting information output control means for controlling the output destination of the handwriting information generated by the handwriting information generation means, and the handwriting information generation means. Storage means for storing the written handwriting information, wherein the handwriting information output control means includes the input terminal arranged in the protective cover part and the first output terminal arranged in the apparatus main body part. The handwriting information management system according to claim 9, wherein the handwriting information generated by the handwriting information generation unit is output to the storage unit in a state where the second output terminal is not connected. is there.
The handwriting information output control means of the handwriting information generation apparatus is generated by the handwriting information generation means in a state where communication between the wireless transmission means and the external device is not established. The handwriting information management system according to claim 10, wherein the handwriting information is output to the storage unit.

In the invention described in claim 12, the handwriting information output control means of the handwriting information generating device includes the input terminal arranged in the protective cover part and the first output terminal arranged in the apparatus main body part. Alternatively, the handwriting information generated by the handwriting information generation unit in a state where the second output terminal is connected and communication between the wireless transmission unit and the external device is established is the wireless 11. The handwriting information management system according to claim 10, wherein the handwriting information management system outputs to a transmission means.
The invention according to claim 13 is characterized in that the information transmission device downloads software for operating the wireless transmission unit to the wireless transmission unit arranged in the protective cover part of the handwriting information generation device. The handwriting information management system according to claim 8.
The handwriting information generation device according to the fourteenth aspect of the present invention is configured such that a plurality of the protective cover portions in which all or a part of the wireless transmission units having different communication methods are arranged in the device main body portion can be attached. The handwriting information management system according to claim 8, wherein:

According to the first aspect of the present invention, the handwriting information generated by the handwriting information generation device can be stably transmitted to the external device as compared with the case where the present invention is not adopted.
According to the second aspect of the present invention, the handwriting information is transmitted wirelessly regardless of whether the protective cover portion is attached to either the end portion of the apparatus main body where the writing portion is arranged or the opposite end portion. It can be transmitted from the transmission means to the external device.
According to claim 3 of the present invention, as compared with the case where the present invention is not adopted, the protective cover portion is provided on both the end portion on the side where the writing portion of the apparatus main body portion is disposed and the opposite end portion. Even when handwriting information is generated in a state where the handwriting information is not attached, the disappearance of the generated handwriting information can be suppressed.
According to claim 4 of the present invention, compared to the case where the present invention is not adopted, it is possible to suppress the disappearance of handwriting information generated in a state where communication with the external device is not established.

According to claim 5 of the present invention, handwriting information is output to the wireless transmission means when the wireless transmission means can wirelessly transmit the handwriting information to the external device. In comparison, the disappearance of handwriting information can be suppressed.
According to the sixth aspect of the present invention, it is possible to select the wireless transmission means corresponding to the communication method provided in the external device in the handwriting information generation device.
According to claim 7 of the present invention, it is possible to stabilize the communication between the wireless transmission means and the external device as compared with the case where the present invention is not adopted.

According to claim 8 of the present invention, handwriting information generated by the handwriting information generation device can be stably transmitted to the information transmission device, compared to a case where the present invention is not adopted.
According to the ninth aspect of the present invention, the handwriting information is transmitted wirelessly regardless of whether the protective cover portion is attached to either the end portion of the apparatus main body portion where the writing portion is disposed or the opposite end portion. The information can be transmitted from the transmitting means to the information transmitting apparatus.
According to the tenth aspect of the present invention, compared to the case where the present invention is not adopted, the protective cover portion is provided on either the end portion on the side where the writing portion of the apparatus main body portion is disposed or on the opposite end portion. Even when handwriting information is generated in a state where the handwriting information is not attached, the disappearance of the generated handwriting information can be suppressed.
According to the eleventh aspect of the present invention, compared to the case where the present invention is not adopted, it is possible to suppress the disappearance of handwriting information generated in a state where communication with the information transmitting apparatus is not established.

According to the twelfth aspect of the present invention, when the handwriting information is output to the wireless transmission means when the wireless transmission means is ready to wirelessly transmit the handwriting information to the information transmission device, the present invention is not adopted. Compared to the above, disappearance of handwriting information can be suppressed.
According to the thirteenth aspect of the present invention, it is possible to set the wireless transmission means corresponding to the communication method provided in the information transmission apparatus in the handwriting information generation apparatus.
According to the fourteenth aspect of the present invention, it is possible to select the wireless transmission means corresponding to the communication method provided in the information transmission device in the handwriting information generation device.

The best mode for carrying out the present invention (hereinafter referred to as “embodiment”) will be described below in detail with reference to the accompanying drawings.
First, the overall configuration of the handwriting information management system in the present embodiment will be described.
FIG. 1 is a diagram showing an example of the configuration of the handwriting information management system of the present embodiment. As shown in FIG. 1, the handwriting information management system includes a terminal device 10, a document server 20 as an example of a handwriting information management device, an identification information server 30 as an example of a handwriting information management device, and an image forming apparatus. 40 and a terminal device 50 as an example of an information transmission device are connected to a network 80. In addition, a digital pen 60 as an example of a handwriting information generation device is connected to the terminal device 50 in a communicable manner.

In the handwriting information management system of this embodiment, when a print request for an electronic document is made from the terminal device 10, the document server 20 receives the print request from the terminal device 10, and the print request is sent to the image forming apparatus 40. An instruction to print the electronic document is issued. Thereby, the image forming apparatus 40 prints the document image of the electronic document on a medium such as paper. At this time, the image forming apparatus 40 prints a code image on the medium in addition to the document image.
The code image here is an image of the identification code and the position code obtained by encoding the identification information and the position information. The identification information is information for uniquely identifying a medium, and is issued by the identification information server 30 in the present embodiment. The position information is information for specifying the coordinate position on the medium, and is generated by the document server 20 in the present embodiment.
Then, when the user writes (handwriting) on the medium on which the document image and the code image are printed using the digital pen 60, the digital pen 60 writes the handwritten information (handwriting information) based on the position information included in the code image. Is generated. At the same time, the digital pen 60 recognizes identification information included in the code image. Then, the recognized identification information and handwriting information are sent to the document server 20 via the terminal device 50. The document server 20 that has received the identification information and the handwriting information specifies the electronic document printed on the medium based on the identification information, and stores the specified electronic document and the handwriting information in association with each other.
In addition, the digital pen 60 is set with a function of using the position information and identification information included in the code image as reference information for linking to predetermined information instead of generating handwriting information. For example, the position information and the identification information are used as information for generating a command for opening a predetermined web browser program and linking the terminal device 50 to a predetermined web address or the like. In that case, the terminal device 50 links to a predetermined web address based on the position information and the identification information, and acquires the predetermined information.

In this specification, electronic data that is the basis of an image recorded on a medium is expressed as “electronic document”. However, this does not mean only data obtained by digitizing a “document” including text. For example, "electronic document" including image data (regardless of raster data or vector data) such as pictures, photographs, figures, etc., data recorded by database management software or spreadsheet software, and other printable electronic data It is said.
In the present specification, the “medium” may be any material as long as it can print an image. A typical example is paper, but it may be a plastic sheet such as an OHP sheet or a metal plate.
Furthermore, in this specification, processing is performed using identification information for uniquely identifying each of the electronic document, the medium, and the digital pen 60 and the user. It shall mean the identification information. That is, in the present embodiment, this identification information is used as an example of medium identification information uniquely given to the medium.

Then, each component which comprises the handwriting information management system of this Embodiment is demonstrated in detail.
The terminal device 10 is a computer device that requests the document server 20 to print an electronic document. Here, as the terminal device 10, for example, a personal computer, a workstation, or another computer is used.
The document server 20 is an example of a handwriting information management device, and is a computer device that stores and manages electronic documents. Also, when a request for printing an electronic document is received from the terminal device 10, an image of the electronic document and a code image representing identification information and position information are generated, and a print command for printing a composite image obtained by synthesizing the image on a medium is generated. Output to the forming apparatus 40. Here, as the document server 20, for example, a personal computer, a workstation, or another computer is used.

The identification information server 30 is an example of a handwriting information management device, and is a computer device that issues identification information to be given to a medium. The issued identification information is stored in association with the electronic document printed on the medium to which the identification information is assigned. Here, as the identification information server 30, for example, a personal computer, a workstation, or another computer is used.
The image forming apparatus 40 is an apparatus that prints an image on a medium and outputs it as a print document. The image forming apparatus 40 may be a single printer or printing machine, or may be a so-called “multifunction machine” having a scanner or a communication function. Here, as an image forming method in the image forming apparatus 40, for example, an electrophotographic method may be used, but other methods may be used.

The terminal device 50 is an example of an information transmission device (external device), and information obtained by digitizing writing on a print document (hereinafter referred to as “handwriting information”) is an electronic source of an image recorded in the print document. It is a computer device that transmits to the identification information server 30 to be reflected in the document. Alternatively, the electronic document to be reflected in the handwriting information may be displayed on a display (not shown), and the handwriting information may be displayed on the display. Here, as the terminal device 50, for example, a personal computer, a workstation, or another computer is used.
The terminal device 50 is also a computer device that links to predetermined information based on position information and identification information sent from the digital pen 60. For example, the terminal device 50 generates a command to open a predetermined web browser program and link to a predetermined web address or the like from the position information and the identification information. And based on position information and identification information, it links to a predetermined web address and acquires predetermined information.
The terminal device 50 is connected to the digital pen 60 by a wireless method such as Bluetooth (registered trademark), Zigbee, UWB (Ultra Wide Band), or an infrared communication function, and communicates with the digital pen 60. Then, identification information and handwriting information or position information are acquired from the digital pen 60. Here, as a communication method between the digital pen 60 and the terminal device 50, a wired method such as a USB (Universal Serial Bus) cable may be used.

  The digital pen 60 is an example of a handwriting information generation device, and is a pen device used for writing characters or figures on a printed document. An image sensor that reads a code image printed on the medium is provided. And the positional information which is an example of the information acquired from the code | cord image read with the image pick-up element is detected. Furthermore, handwriting information obtained by converting character or graphics written from the position information into image data is generated and stored based on the position information. Further, identification information which is an example of information acquired from the code image read by the image sensor is detected and stored.

Subsequently, details of each component constituting the handwriting information management system will be described.
First, the configuration of the document server 20 will be described.
FIG. 2 is a block diagram illustrating an example of a functional configuration of the document server 20. As shown in FIG. 2, the document server 20 includes a reception unit 21, an identification information acquisition unit 22, an electronic document management unit 23, a handwriting information management unit 24, and a document / handwriting information storage unit 25. Further, it includes an identification code generation unit 27a, a position code generation unit 27b, a code arrangement unit 27c, a pattern image storage unit 27d, and a code image generation unit 27e. Furthermore, a document image generation unit 26, an image composition unit 28, and a transmission unit 29 are provided.

The receiving unit 21 receives a print request from the terminal device 10. Here, in addition to the electronic document, the print request includes identification information (hereinafter referred to as “document ID”) of the electronic document to be printed and various kinds of information for determining the layout of the electronic document on the printed medium. Settings (hereinafter referred to as “print settings”) are included. The document ID is assigned to each electronic document by the terminal device 10, but may be assigned by the document server 20. Further, the receiving unit 21 receives from the identification information server 30 identification information that is uniquely given to the medium on which the print document is printed. Further, when writing is performed on the print document, the identification information embedded in the print document and handwriting information obtained by digitizing the content of the print document (written image) are received from the identification information server 30. .
The identification information acquisition unit 22 acquires the document ID and print settings from the reception unit 21, passes them to the transmission unit 29, instructs transmission of an identification information issue request, passes this to the document image generation unit 26, and sends the document Instructs generation of an image. Further, the identification information of the medium is acquired from the receiving unit 21, and this is passed to the identification code generating unit 27a to instruct generation of the identification code.

  The electronic document management unit 23 acquires the identification information and the electronic document received by the reception unit 21 and registers them in the document / handwriting information storage unit 25 in association with each other based on the document ID. Also, a new electronic document (second electronic document) that reflects the state of the electronic document stored in the document / handwriting information storage unit 25 printed on the medium according to the print settings is generated, and the generated second The second electronic document is stored in the document / handwriting information storage unit 25. Further, when the display or printing of the electronic document is instructed, the corresponding identification information and electronic document are taken out from the document / handwriting information storage unit 25.

The handwriting information management unit 24 acquires the identification information and handwriting information received by the receiving unit 21 and registers the handwriting information in the document / handwriting information storage unit 25 in association with the electronic document based on the identification information. When the display of handwriting information is instructed, the corresponding identification information and handwriting information are extracted from the document / handwriting information storage unit 25.
The document / handwriting information storage unit 25 stores an electronic document managed by the electronic document management unit 23 and handwriting information managed by the handwriting information management unit 24. Here, in the present embodiment, the document / handwriting information storage unit 25 is provided as an example of a storage unit that stores the identification information, the electronic document, and the handwriting information in association with each other.

The identification code generation unit 27a generates identification code by encoding identification information for specifying a medium.
The position code generation unit 27b encodes position information indicating the coordinate position on the medium to generate a position code.
The code arrangement unit 27c arranges the identification code generated by the identification code generation unit 27a, the position code generated by the position code generation unit 27b, and the like on a two-dimensional plane according to a predetermined layout (see FIG. 3 in the subsequent stage). Then, a two-dimensional code array is generated.
The pattern image storage unit 27d stores a pattern image corresponding to the code value of each code stored in the code array.
The code image generation unit 27e refers to the two-dimensional code array generated by the code arrangement unit 27c, selects a pattern image corresponding to each code value, and generates a code image.

The document image generation unit 26 acquires a document ID and print settings from the identification information acquisition unit 22, and reads an electronic document specified by the document ID from the document / handwriting information storage unit 25. Then, a document image of the electronic document is generated according to the print setting.
The image composition unit 28 synthesizes the code image generated by the code image generation unit 27e and the document image generated by the document image generation unit 26 to generate a composite image.
The transmission unit 29 transmits an identification information issuance request to the identification information server 30. Also, an image print command for the medium is transmitted to the image forming apparatus 40. Furthermore, when the display of handwriting information is instructed, the identification information and handwriting information are transmitted to the identification information server 30.

Here, the code image generated by the document server 20 of the present embodiment will be described.
FIG. 3 is a diagram illustrating an example of an image constituting the code image. First, unit patterns constituting a code image will be described. FIG. 3A shows an example of the unit pattern.
The unit pattern is the minimum unit for embedding information. In FIG. 3A, a black area and a shaded area are areas where dots can be arranged, and a white area between them is an area where dots cannot be arranged. In addition, among the areas where dots can be arranged, dots are arranged in black areas, and dots are not arranged in hatched areas. That is, FIG. 3A shows an example in which a unit pattern is configured by arranging dots at two places (black areas) selected from nine places where dots can be arranged. Here, since there are 36 (= ₉ C ₂ ) combinations for selecting 2 locations out of 9 locations, there are 36 types of unit patterns. Of these, four types of unit patterns are used as synchronization patterns. The synchronization pattern is a pattern for detecting the rotation of the image and specifying the relative positions of the identification code and the position code. In particular, since it is necessary to detect the rotation of the image, the four types of synchronization patterns are selected such that when one of the synchronization patterns is rotated 90 degrees, another synchronization pattern is obtained. Further, the 32 types of unit patterns other than the 4 types of unit patterns are used as information patterns expressing the identification code and the position code, and 5-bit information is expressed.

  By the way, the dots shown in FIG. 3A are only for information representation, and do not necessarily coincide with the dots that mean the minimum points constituting the image. In the present embodiment, dots for information expression (the minimum square in FIG. 3A) have a size of 2 dots × 2 dots at 600 dpi. Since the size of one dot at 600 dpi is 0.0423 mm, one side of a dot for information expression (the minimum square in FIG. 3A) is 84.6 μm (= 0.0423 mm × 2). The larger the dot for information expression, the more likely it is to be noticeable. Therefore, it is preferable that the dot is as small as possible. However, if it is too small, printing with a printer becomes impossible. Therefore, the above values larger than 50 μm and smaller than 100 μm are employed as the size of dots for information expression. However, the above value 84.6 μm is a numerical value to the last, and is about 100 μm in the actually printed toner image. In the present specification, the term “dot” refers to a dot for information expression, not a dot that means the minimum point constituting an image unless otherwise specified.

Next, a code block composed of such unit patterns will be described. FIG. 3B shows an example of the layout of the code block. Here, not the image but the code arrangement immediately before being replaced by the pattern image is shown. That is, a unit pattern as shown in FIG. 3A (any one of 36 unit patterns) is arranged in the smallest square (hereinafter referred to as “unit block”) in FIG. Will be formed.
In the layout of FIG. 3B, the synchronization code is arranged in one unit block at the upper left of the code block. Further, the X position code is arranged in the four unit blocks on the right side of the unit block in which the synchronization code is arranged, and the Y position code is arranged in the four unit blocks on the lower side of the unit block in which the synchronization code is arranged. . Furthermore, identification codes are arranged in 16 (= 4 × 4) unit blocks surrounded by unit blocks in which these position codes are arranged.

Here, encoding of identification information will be described.
When encoding identification information, the bit string which comprises identification information is divided | segmented into a some block in order to perform RS encoding. Although there are several methods for encoding, RS encoding is suitable in this embodiment. This is because the RS code is a multi-value coding method, and in this case, the value represented by the unit block corresponds to the multi-value of the RS code. For example, when 5-bit information is expressed by one unit block, the 60-bit identification information is divided into 12 blocks having a block length of 5 bits. If an RS code capable of correcting two blocks of errors is employed, the code length is 16 blocks, which can be accommodated in a unit block in which the identification code in the code block of FIG. Note that the encoding method is not limited to the RS code, and other encoding methods such as a BCH code may be used.

Subsequently, encoding of position information will be described.
For encoding the position information, an M-sequence code, which is a kind of pseudo-random sequence, is used. Here, the M sequence refers to a sequence having the longest period among a shift register having a certain length and a code sequence generated by feedback. When K is the number of stages in the shift register, the sequence length of the M sequence is 2 ^K −1. Arbitrary consecutive K bits extracted from the M sequence have a property that they do not appear at other positions in the same M sequence. Therefore, the position information is encoded using this property.
By the way, in the present embodiment, a necessary M-sequence order is obtained from the length of position information to be encoded, and an M-sequence is generated. However, if the length of the position information to be encoded is known in advance, it is not necessary to generate the M sequence each time. That is, a fixed M sequence may be generated in advance and stored in a memory or the like.
For example, it is assumed that an M sequence (K = 13) having a sequence length of 8191 is used. In this case, since the position code is also embedded in units of 5 bits, 5 bits are taken out from the M sequence having a sequence length of 8191 and blocked.

  In this specification, the identification information and the position information are clearly distinguished and used for the sake of simplicity. However, there is a technique in which a wide range of position information is prepared, the position information is cut out and embedded from different ranges for each medium, and the medium is identified by the difference in position information. Therefore, in such a method, it is assumed that the position information has a function for identifying the medium, and the position information is also considered as the identification information.

Next, the configuration of the identification information server 30 will be described.
FIG. 4 is a block diagram illustrating an example of a functional configuration of the identification information server 30. As illustrated in FIG. 4, the identification information server 30 includes a reception unit 31, an identification information management unit 32, an identification information storage unit 33, a display information generation unit 34, and a transmission unit 39.
The receiving unit 31 receives an identification information issue request from the document server 20. The receiving unit 31 receives medium identification information and handwriting information from the terminal device 50 when writing is performed on the print document. Here, in the present embodiment, the medium identification information and the handwriting information are received from the terminal device 50, and when the display of the handwriting information is instructed, the medium identification information and the handwriting information are obtained from the document server 20. A receiving unit 31 is provided as an example of receiving means for receiving.

When there is a request for issuing identification information, the identification information management unit 32 issues the identification information without duplication, and stores the document ID and print settings specified at that time in association with the identification information. In response to designation of identification information, a document ID and print settings corresponding to the identification information are extracted.
The identification information storage unit 33 stores the identification information in the used / unused state, the document ID of the electronic document printed on the medium to which the identification information is added, and the electronic document printed on the medium to which the identification information is printed. It is a database that stores print settings in association with each other.
The display information generation unit 34 generates display information for displaying the handwriting information based on the information acquired from the document server 20 when the display of the handwriting information is instructed. As this display information, for example, data serving as a source for generating an image to be displayed on the terminal device 50 is generated.

  The transmission unit 39 transmits identification information issued in response to a request from the document server 20 to the document server 20. In addition, when writing on a print document is performed, medium identification information and handwriting information are transmitted to the document server 20. Further, when the display of handwriting information is instructed, the display information is transmitted to the terminal device 50.

Next, the digital pen 60 will be described.
The digital pen 60 according to the present embodiment is configured as a pen type suitable for a writing operation, and is an example of a pen body portion 60A that is an example of an apparatus body portion and a protective cover portion that protects a pen tip 64 (see the latter stage). It is comprised by two components with the cap part 60B. First, FIG. 5 is an overall configuration diagram of the digital pen 60. FIG. 5A is an external perspective view of the digital pen 60 in a state where the cap portion 60B is attached to the distal end portion of the pen body portion 60A, and FIG. FIG. 6C is an external perspective view of the cap portion 60B of the pen 60, and FIG. 5C is an external perspective view of the digital pen 60 in a state where the cap portion 60B is attached to the rear end portion of the pen body portion 60A. As shown in FIG. 5, the digital pen 60 of the present embodiment is configured such that a cap portion 60B is detachably attached to the front end portion and the rear end portion with respect to the pen body portion 60A.
When the “reference mode” (refer to the subsequent stage) is used in a state where the digital pen 60 is not used or in a state where the cap unit 60B is mounted, as shown in FIG. Attached to the tip of the main body 60A. Further, when the digital pen 60 is used in the “writing mode” (see later) or the “reference mode”, as shown in FIG. 5C, from the viewpoint of preventing the cap portion 60B from being lost or damaged, the cap portion 60B is attached to the rear end of the pen body 60A.

  FIG. 6 is a schematic diagram illustrating the internal configuration of the digital pen 60. As shown in FIG. 6, the pen main body 60A of the digital pen 60 includes a pen tip 64, which is an example of a writing unit that writes on the medium, a control / processing unit 61 that performs operation control and signal processing of the entire pen, and a medium. An infrared LED 62 for irradiating infrared light thereon, an infrared CMOS 63 for reading a code image by detecting reflected light from the medium, and an information memory 65 as an example of a storage means for storing identification information, handwriting information, and position information It has. Furthermore, a rechargeable battery 67 that supplies power for driving each part of the digital pen 60 is provided.

In addition, the pen body 60A of the digital pen 60 is equipped with a cap 60B for protecting the pen tip 64 on the digital pen 60 as a switching member that outputs an on / off signal corresponding to various operations performed by the user. A cap switch SW1 for detecting whether or not there is a writing pressure detection switch SW2 for detecting a writing operation by the digital pen 60 by a pressure (writing pressure) applied to the pen tip 64, and a user switch SW3 for receiving an ON / OFF input by a user operation. I have. The cap switch SW1 and the user switch SW3 are provided on the side surface portion of the main body casing 68, and the writing pressure detection switch SW2 is provided inside the main body casing 68.
Further, an output terminal CNT2 and an output terminal CNT3 for outputting a data signal generated by the control / processing unit 61 are provided on a side surface portion of the main body casing 68. The output terminal CNT2 is an example of a first output terminal, and is arranged on the tip side of the pen body 60A (the side on which the pen tip 64 is arranged). The output terminal CNT3 is an example of a second output terminal, and is disposed on the rear end side of the pen body 60A (the side opposite to the side where the pen tip 64 is disposed).
The infrared LED 62, the infrared CMOS 63, the information memory 65, the cap switch SW1, the writing pressure detection switch SW2, the user switch SW3, the output terminal CNT2, and the output terminal CNT3 are connected to the control / processing unit 61. Connected to send and receive signals.

  On the other hand, the cap unit 60B of the digital pen 60 includes a communication unit 66 as an example of a wireless transmission unit that wirelessly transmits a data signal to a terminal device 50 that is an example of an information transmission device (external device), and a control / processing unit. An input terminal CNT1 which is an example of an input terminal for inputting a data signal sent from 61 to the communication unit 66 is provided. The communication unit 66 and the input terminal CNT1 are connected by a signal line (not shown) disposed inside the wall surface or the inner peripheral surface of the cap unit 60B. Then, the communication unit 66 performs wireless communication with the terminal device 50, and sends identification information, which is an example of a data signal generated by the control / processing unit 61, and handwriting information or position information to the terminal device 50. Send.

Here, the connection between the communication unit 66 provided in the cap unit 60B and the control / processing unit 61 of the pen body unit 60A will be described.
In the state in which the cap unit 60B is attached to the tip end portion of the pen body unit 60A (see FIG. 5A), the communication unit 66 has the input terminal CNT1 on the cap unit 60B side and the pen body as shown in FIG. The output terminal CNT2 on the unit 60A side is connected, and the control / processing unit 61 and the communication unit 66 are set in a state where data signals can be transmitted and received. That is, the output terminal CNT2 on the pen body portion 60A side is arranged at a position to be connected to the input terminal CNT1 on the cap portion 60B side when the cap portion 60B is mounted at a predetermined position on the tip end side of the pen body portion 60A. ing. Thereby, as shown in FIG. 6, the cap portion 60B is mounted at a predetermined position on the tip end side of the pen body portion 60A, so that the input terminal CNT1 and the output terminal CNT2 are connected. . Then, the control / processing unit 61 detects that the input terminal CNT1 and the output terminal CNT2 are connected, and transmits a data signal to the communication unit 66.

  When the cap 60B is attached to the rear end of the pen body 60A (see FIG. 5C), the input terminal CNT1 on the cap 60B side and the output terminal CNT3 on the pen body 60A are connected. Then, the control / processing unit 61 and the communication unit 66 are set in a state where data signals can be transmitted and received. That is, the output terminal CNT3 on the pen body portion 60A side is arranged at a position to be connected to the input terminal CNT1 on the cap portion 60B side when the cap portion 60B is mounted at a predetermined position on the rear end side of the pen body portion 60A. Is done. Here, FIG. 7 shows a state in which the cap part 60B is attached to the rear end part of the pen body part 60A, and the input terminal CNT1 on the cap part 60B side and the output terminal CNT3 on the pen body part 60A side are connected. FIG. As shown in FIG. 7, the cap 60B is attached to a predetermined position on the rear end side of the pen body 60A, so that the input terminal CNT1 and the output terminal CNT3 are connected. Then, the control / processing unit 61 detects that the input terminal CNT1 and the output terminal CNT3 are connected, and transmits a data signal to the communication unit 66.

The input terminal CNT1 provided on the cap portion 60B side is provided in an annular shape on the inner peripheral surface of the wall surface of the cap portion 60B, for example. Thereby, the input terminal CNT1 and the output terminal CNT2 or the output terminal CNT3 are connected regardless of the relative positions of the cap part 60B and the pen body part 60A in the circumferential direction. In this case, the output terminal CNT2 and the output terminal CNT3 on the pen body portion 60A side may be provided in an annular shape on the outer peripheral surface of the main body casing 68, or one or a plurality of them may be provided on the same circumference. Good.
Also, one or a plurality of input terminals CNT1 are provided on the same circumference of the inner peripheral surface of the wall surface of the cap portion 60B, and the output terminals CNT2 and CNT3 on the pen main body portion 60A side are also the same on the outer peripheral surface of the main body housing 68. You may comprise so that one or more may be provided on the circumference. In this configuration, the input terminal CNT1 and the output terminal CNT2 or the output terminal CNT3 are connected when the cap part 60B and the pen body part 60A are mounted in a predetermined positional relationship with respect to the circumferential direction. Accordingly, a switch function for determining whether or not to transmit a data signal (identification information, handwriting information, and position information) from the communication unit 66 to the terminal device 50 depending on whether or not the cap unit 60B is mounted at a predetermined position in the circumferential direction. Will have.

Furthermore, a configuration in which the input terminal CNT1 is configured to protrude freely and the output terminal CNT2 or the output terminal CNT3 is provided in a recess that is difficult for the user to directly contact may be used. FIG. 8 is a diagram for explaining the connection between the projecting input terminal CNT1 and the output terminal CNT3 provided in the recess when the cap unit 60B is attached to the rear end of the pen body 60A. As shown in FIG. 8A, the input terminal CNT1 is elastically supported to urge the input terminal CNT1 to the inside of the cap part 60B until the cap part 60B is attached to the rear end part of the pen body part 60A. In response to the elastic force from the body CNT1a, it protrudes and is located inside the cap portion 60B. Subsequently, as shown in FIG. 8B, when the cap portion 60B starts to be attached to the rear end portion of the pen main body portion 60A, the elastic support body CNT1a is pressed by the main body housing 68 to be compressed and input. The terminal CNT1 slides while being in contact with the surface of the main body casing 68. Then, as shown in FIG. 8C, when the input terminal CNT1 reaches the position of the output terminal CNT3, the elastic support CNT1a is released by the recess CNT3b in which the output terminal CNT3 is arranged, and the input terminal CNT1 again It protrudes and is located inside the cap part 60B. Thereby, the input terminal CNT1 and the output terminal CNT3 are connected. In addition, when the input terminal CNT1 reaches the recess CNT3b, the user feels a click and recognizes that the cap portion 60B is mounted at a predetermined position.
By providing the output terminal CNT2 in the same concave portion, the input terminal CNT1 that can freely protrude and the output terminal CNT2 provided in the concave portion when the cap portion 60B is attached to the tip portion of the pen body portion 60A are shown in FIG. The connection is made in the same manner as in the state shown in FIG.

In this case, the output terminal CNT2 and the output terminal CNT3 are configured by push switches, and the input terminal CNT1 presses the output terminal CNT2 and the output terminal CNT3, whereby the output terminal CNT2 and the output terminal CNT3 and the control / processing unit 61 You may comprise so that a connection may be turned ON. As a result, the input terminal CNT1 is set to the position where the output terminal CNT2 or the output terminal CNT3 is arranged, so that the control / processing unit 61 detects and controls the connection between the input terminal CNT1 and the output terminal CNT2 or the output terminal CNT3. / Output of the data signal from the processing unit 61 is started.
Further, the input terminal CNT1 of the cap part 60B is integrally fixed to the openable / closable lid part, and the input terminal CNT1 is retracted by opening the lid part until the cap part 60B is attached to the pen body part 60A. deep. The input terminal CNT1, the output terminal CNT2, and the output terminal CNT3 may be connected by closing the lid when the cap part 60B is attached to a predetermined position of the pen body 60A.

  In the digital pen 60 of the present embodiment, the data signal (identification information and handwriting information from the control / processing unit 61 is sent from the output terminal CNT2 or the output terminal CNT3 to the communication unit 66 via the input terminal CNT1 as described above. And position information) are output. In addition, although not shown in FIGS. 6 and 7, the power supply from the battery 67 to the communication unit 66 is similarly performed by connecting the input terminal CNT1 and the output terminal CNT2 or the output terminal CNT3. You may comprise. Further, a power line different from the signal line to the output terminal CNT2 and the output terminal CNT3 may be separately arranged, and power may be supplied from the battery 67 to the communication unit 66 using this power line.

Next, each functional unit provided in the pen body 60A of the digital pen 60 will be described.
First, the infrared LED 62 is composed of one or a plurality of LEDs (Light Emitting Diodes) that emit infrared light having a wavelength of 700 to 1000 μm. Then, pulse lighting is performed based on a drive signal transmitted from an illumination drive unit 614 in the control / processing unit 61 described later.
The infrared CMOS 63 is a CMOS sensor (Complementary Metal Oxide Semiconductor) having sensitivity in the infrared region, and uses a global shutter system capable of simultaneously transferring captured images. The infrared CMOS 63 captures a code image printed on the medium in synchronization with an image capture signal transmitted at a cycle (frame rate) of about 50 fps to 100 fps (frame per second). The image capture signal is generated by an image capture signal generation unit 615 in the control / processing unit 61 described later, and is transmitted to the infrared CMOS 63.

Next, the control / processing unit 61 will be described. FIG. 9 is a block diagram illustrating an example of a functional configuration of the control / processing unit 61. As shown in FIG. 9, the control / processing unit 61 acquires identification information and position information from the processing result in the image processing unit 611 and the image processing unit 611 that process the code image read by the infrared CMOS 63, Furthermore, a data processing unit 612 that generates handwriting information, an output unit 613 that outputs the identification information acquired and generated by the data processing unit 612 and handwriting information or position information to the information memory 65 or the communication unit 66, and an infrared LED 62 An illumination drive unit 614 for driving the image, an image capture signal generation unit 615 for generating an image capture signal of a predetermined period to be transmitted to the infrared CMOS 63, an operation control unit 616 for controlling the operation of each unit, and pen identification information (pen ID ) Is stored.
Here, the image processing unit 611 and the data processing unit 612 function as handwriting information generation means for generating handwriting information based on the code image printed on the medium.

The image processing unit 611 includes an image acquisition unit 611a and a dot array generation unit 611b.
The image acquisition unit 611a acquires a code image read from a print document by the infrared CMOS 63. Moreover, the noise contained in a code image is removed as needed.
The dot array generation unit 611b generates a dot array with reference to the dot positions in the code image. That is, on a two-dimensional array, for example, “1” is stored at a position where there is a dot and “0” is stored at a position where there is no dot, thereby replacing the dot detected as an image with digital data. Then, this two-dimensional array is output as a dot array.

The data processing unit 612 includes a code array generation unit 612a, an identification information acquisition unit 612b, a position information acquisition unit 612c, and a handwriting information generation unit 612d.
The code array generation unit 612a detects a block corresponding to the unit pattern in the code block on the dot array. Specifically, a frame having the same shape and size as the block in which the unit pattern is arranged is moved on the dot array, and the frame is fixed at a position where the number of dots in the frame becomes equal. For example, if the unit pattern of FIG. 3A is used, a frame having a size corresponding to 3 dots × 3 dots is moved, and the frame is fixed at a position where the number of dots included in the frame is 2. Then, a code array is generated that stores code values determined from dot positions in each block delimited by the frame. When this code array is generated, the position of the synchronization code is specified by searching for a code value of a predetermined synchronization code.

The identification information acquisition unit 612b detects the identification code based on the position of the synchronization code from the code array. Then, the identification code is decoded using the parameters used in the RS encoding process at the time of image generation, and identification information is acquired.
The position information acquisition unit 612c detects a position code with reference to the position of the synchronization code from the code array. Then, an M-sequence partial sequence is extracted from the position code, the position of this partial sequence in the M-sequence used at the time of image generation is referenced, and a value obtained by correcting this position with an offset using a synchronization code is acquired as position information. The reason for correcting with the offset is that a synchronization code is arranged between the position codes.
The handwriting information generation unit 612d generates handwriting information obtained by connecting the position information acquired by the position information acquisition unit 612c. The handwriting information here is data obtained by connecting and digitizing the locus of the tip of the pen tip 64 when writing (handwriting) is performed with the pen tip 64 (see FIGS. 6 and 7).

  By the way, the digital pen 60 is set with a function capable of using a plurality of different operation modes. For example, in the digital pen 60 of the present embodiment, the “writing mode” that is an operation mode in which a writing image drawn on the medium by the pen tip 64 is transmitted as handwriting information to the terminal device 50, and the identification information obtained from the medium In addition, a “reference mode” is set as an operation mode used as reference information for linking one or both of position information to specific information. As an operation example in the “reference mode”, as reference information for generating a command for opening a predetermined web browser program for the terminal device 50 and linking to a web address or the like in which specific information is stored and described, The position information acquired by the position information acquisition unit 612c and the identification information acquired by the identification information acquisition unit 612b are used. In the “reference mode”, only one of the position information and the identification information may be used.

  The operation modes such as “writing mode” and “reference mode” in the digital pen 60 are on / off states of the cap switch SW1, the writing pressure detection switch SW2, and the user switch SW3 that output an on / off signal corresponding to the user's operation. Is set by the operation control unit 616. Then, the operation control unit 616 sends a control signal instructing the data processing unit 612 to set the “writing mode” or the “reference mode”.

The handwriting information generation unit 612d operates according to a control signal that instructs setting of the “writing mode” from the operation control unit 616. Thereby, in the “writing mode”, the identification information acquired by the identification information acquisition unit 612b and the handwriting information generated by the handwriting information generation unit 612d are sent to the output unit 613.
On the other hand, when the “reference mode” is set by the control signal from the operation control unit 616, the handwriting information generation unit 612d stops its function. Thereby, in the “reference mode”, the identification information acquired by the identification information acquisition unit 612b and the position information acquired by the position information acquisition unit 612c are output to the output unit 613.
The handwriting information generation unit 612d may be operated in both the “writing mode” and the “reference mode” to generate handwriting information from the position information. At that time, when the “writing mode” is set, the handwriting information is used as it is as handwriting information obtained by connecting the tips of the pen tip 64. When “reference mode” is set, handwriting information is used as reference information.

The output unit 613 outputs identification information and handwriting information or position information to the information memory 65 or the communication unit 66. That is, when the input terminal CNT1 on the cap unit 60B side and the output terminal CNT2 or the output terminal CNT3 on the pen body unit 60A side are connected, and communication between the communication unit 66 and the terminal device 50 is established. The output unit 613 outputs identification information and handwriting information or position information to the communication unit 66.
On the other hand, when the input terminal CNT1 on the cap part 60B side is not connected to the output terminal CNT2 and the output terminal CNT3 on the pen body part 60A side, or the input terminal CNT1 on the cap part 60B side and the output on the pen body part 60A side When the terminal CNT2 or the output terminal CNT3 is connected, but communication between the communication unit 66 and the terminal device 50 is not established, the output unit 613 displays identification information, handwriting information, or position information. Is output to the information memory 65. The information memory 65 stores the acquired identification information and handwriting information or position information.
The output unit 613 is connected to the input terminal CNT1 on the cap unit 60B side and the output terminal CNT2 or the output terminal CNT3 on the pen body unit 60A side, and communication between the communication unit 66 and the terminal device 50 is established. The identification information and handwriting information are read from the information memory 65 and output to the communication unit 66.
Note that the output unit 613 may be configured to output either one of identification information and handwriting information or position information to the information memory 65 or the communication unit 66.

The image capture signal generation unit 615 generates an image capture signal having a period (frame rate) of, for example, 50 fps to 100 fps and transmits the image capture signal to the infrared CMOS 63. The infrared CMOS 63 sequentially captures the code images printed on the medium at the frame rate set by the transmitted image capture signal. Further, the image capture signal generation unit 615 transmits the generated image capture signal to the illumination drive unit 614.
The illumination drive unit 614 generates a drive signal for driving the infrared LED 62 and turns on the infrared LED 62 in pulses. At that time, in order to correspond to the frame rate in the infrared CMOS 63, the drive signal is output in synchronization with the image capture signal generated by the image capture signal generation unit 615. Thereby, the power consumption in the infrared LED 62 is reduced.

In the digital pen 60, first, when the infrared LED 62 driven by the illumination driving unit 614 irradiates the medium with infrared light, the infrared is synchronized with the image capture signal from the image capture signal generation unit 615. The CMOS 63 receives the reflected light and reads the code image printed on the medium. The code image read by the infrared CMOS 63 is sent to the image processing unit 611 in the control / processing unit 61.
In the image processing unit 611, the image acquisition unit 611a acquires the read code image. At that time, if noise is included in the code image, it is removed. Subsequently, the dot array generation unit 611b converts the dot positions included in the code image into digital data and generates a dot array. Then, the generated dot array is sent to the data processing unit 612.

In the next data processing unit 612, the code array generation unit 612a detects a block from the dot array, and generates a code array that stores a code value for each block. Then, the position of the synchronization code is specified in the code array. Thereafter, the identification information acquisition unit 612b detects the identification code based on the position of the synchronization code, decodes it, and acquires the identification information. The identification information acquired by the identification information acquisition unit 612b is sent to the output unit 613.
Further, the position information acquisition unit 612c detects the position code based on the position of the synchronization code, decodes this, and acquires the position information. When the “writing mode” is set, the position information acquired by the position information acquisition unit 612c is sent to the handwriting information generation unit 612d, and the handwriting information generation unit 612d connects the position information. Handwriting information is generated. The handwriting information generated by the handwriting information generation unit 612d is sent to the output unit 613. On the other hand, when the “reference mode” is set, the position information acquired by the position information acquisition unit 612 c is sent to the output unit 613 as it is.

  As described above, the output unit 613 is connected to the input terminal CNT1 on the cap unit 60B side and the output terminal CNT2 or the output terminal CNT3 on the pen body unit 60A side, and between the communication unit 66 and the terminal device 50. If communication is established, the output unit 613 outputs identification information and handwriting information or position information to the communication unit 66. On the other hand, when the input terminal CNT1 on the cap part 60B side is not connected to the output terminal CNT2 and the output terminal CNT3 on the pen body part 60A side, or the input terminal CNT1 on the cap part 60B side and the output on the pen body part 60A side When the terminal CNT2 or the output terminal CNT3 is connected, but communication between the communication unit 66 and the terminal device 50 is not established, the output unit 613 displays identification information, handwriting information, or position information. Is output to the information memory 65. The information memory 65 stores identification information sent from the output unit 613 and handwriting information or position information. Thereby, even when the input terminal CNT1 on the cap part 60B side and the output terminal CNT2 and the output terminal CNT3 on the pen body part 60A side are not connected or in a state where the communication is not good, the identification information and the handwriting information Or location information is not lost.

Next, transmission of the identification information and handwriting information generated by the control / processing unit 61 to the terminal device 50 via the communication unit 66 will be described.
FIG. 10 is a flowchart illustrating an example of a transmission control procedure of identification information and handwriting information performed by the operation control unit 616 of the control / processing unit 61. As shown in FIG. 10, the operation control unit 616 first determines whether the output terminal CNT2 or the output terminal CNT3 on the pen body 60A side is connected to the input terminal CNT1 on the cap unit 60B side (step). 11). For example, the operation control unit 616 outputs predetermined signals to the output terminal CNT2 and the output terminal CNT3, and the output terminal CNT2 or the output terminal CNT3 becomes the input terminal CNT1 depending on whether or not the predetermined signal is returned from the communication unit 66. Whether or not is connected. When the output terminal CNT2 and the output terminal CNT3 are configured by push switches, the output terminal CNT2 or the output terminal CNT3 is an input terminal depending on whether a predetermined signal is transmitted from the output terminal CNT2 and the output terminal CNT3. It is determined whether or not it is connected to CNT1.

Next, when it is determined that the output terminal CNT2 or the output terminal CNT3 is connected to the input terminal CNT1 (step 12), the operation control unit 616 starts supplying power to the communication unit 66, and then the communication unit 66 And establishment of communication between the terminal device 50 (step 13). That is, until the output terminal CNT2 or the output terminal CNT3 is connected to the input terminal CNT1, a state in which the energization to the communication unit 66 is stopped is set to suppress power consumption.
When communication between the communication unit 66 and the terminal device 50 is established (step 14), the operation control unit 616 sets a power saving mode for suppressing power consumption of the entire digital pen 60 (step 15). . Thereafter, the operation control unit 616 monitors whether the identification information and the handwriting information or the position information are transmitted from the data processing unit 612 to the output unit 613 (step 16).

  When the identification information and the handwriting information or the position information are transmitted from the data processing unit 612 to the output unit 613 (step 17), the power saving mode is canceled (step 18). After canceling the power saving mode, the operation control unit 616 sends the identification information and handwriting information transmitted to the output unit 613 to the communication unit 66 (step 19). Thereby, the communication part 66 transmits identification information, handwriting information, etc. to the terminal device 50 (step 20). The operation control unit 616 here functions as handwriting information output control means for controlling the output destination of handwriting information.

On the other hand, when it is determined that the output terminal CNT2 and the output terminal CNT3 are not connected to the input terminal CNT1 (step 12), the operation control unit 616 sends identification information and handwriting information from the data processing unit 612 to the output unit 613. Etc. are monitored (step 21). When the identification information and handwriting information are transmitted from the data processing unit 612 to the output unit 613 (Step 22), the operation control unit 616 functioning as handwriting information output control means transmits the identification information transmitted to the output unit 613. The handwriting information and the like are sent to the information memory 65 (step 25). The information memory 65 stores the transmitted identification information and handwriting information (step 26). Thereby, the disappearance of the identification information and the handwriting information generated in a state where the output terminal CNT2 and the output terminal CNT3 are not connected to the input terminal CNT1 is suppressed.
The operation control unit 616 returns to step 11 while the identification information and handwriting information are not transmitted (step 22), and determines whether the output terminal CNT2 or the output terminal CNT3 is connected to the input terminal CNT1. . When it is determined that the output terminal CNT2 or the output terminal CNT3 is connected to the input terminal CNT1 (step 12), the operation control unit 616 performs the processing from step 13 onward.

Similarly, even when communication between the communication unit 66 and the terminal device 50 is not established (step 14), the operation control unit 616 receives the identification information and handwriting information from the data processing unit 612 in the output unit 613. The transmission is monitored (step 23). When the identification information and handwriting information are transmitted from the data processing unit 612 to the output unit 613 (step 24), the operation control unit 616 transmits the identification information and handwriting information transmitted to the output unit 613 to the information memory 65. (Step 25). The information memory 65 stores the transmitted identification information and handwriting information (step 26). Thereby, the disappearance of the identification information and the handwriting information generated in a state where the communication between the communication unit 66 and the terminal device 50 is not established is suppressed.
In addition, the operation control unit 616 returns to step 13 while communication between the communication unit 66 and the terminal device 50 is not established (step 24), and performs communication between the communication unit 66 and the terminal device 50. Try to establish. Thereby, when the communication between the communication unit 66 and the terminal device 50 is established (step 14), the operation control unit 616 performs the processing after step 15.

As described above, in the digital pen 60 of the present embodiment, the communication unit 66 that transmits identification information, handwriting information, and position information to the terminal device 50 is provided in the cap unit 60B. Accordingly, there is no member that shields the communication unit 66 even when the cap unit 60B is used in the “writing mode” or the “reference mode” in a state where the cap unit 60B is attached to the rear end of the pen body unit 60A. . On the other hand, in the configuration in which the communication unit 66 is provided inside the pen body 60A, when the cap 60B is attached to the rear end of the pen body 60A, the communication 66 is shielded by the cap 60B. It will be in the state. Therefore, the digital pen 60 of the present embodiment in which the communication unit 66 is provided in the cap unit 60B is more stable in communication with the terminal device 50 than the configuration in which the communication unit 66 is provided in the pen body 60A. Is achieved.
Further, in the digital pen 60 of the present embodiment, since the communication unit 66 is not disposed in the pen body 60A, the pen body 60A can be downsized.

Furthermore, by adopting a configuration in which the communication unit 66 is provided in the cap unit 60B, a plurality of cap units 60B each having a communication unit 66 having a different communication method are prepared, and the communication method provided in the terminal device 50 is supported. The user may select the cap portion 60B that has been set.
In that case, when the operation control unit 616 attempts to establish communication between the communication unit 66 and the terminal device 50 in step 13 of the processing flow of FIG. 10, the operation control unit 616 uses the communication method of the communication unit 66. And attempts to establish communication corresponding to the detected communication method.

In addition, the cap unit 60B includes a communication unit 66 that can communicate with a plurality of different communication methods, and the pen body unit 60A is provided with a changeover switch for switching the communication method so that the communication method can be selected and used by the changeover switch. May be.
Furthermore, it is good also as a structure by which the software which implement | achieves in the communication part 66 the communication system used in the terminal device 50 is downloaded to the communication part 66, for example. In that case, for example, a connector for connecting a USB cable for downloading software to the communication unit 66 is arranged in the cap unit 60B, and predetermined software is downloaded from the terminal device 50 via the USB cable. Thereby, the communication unit 66 provided in the cap unit 60 </ b> B communicates with the terminal device 50 by the communication method used in the terminal device 50.

In the processing flow of FIG. 10 described above, the operation control unit 616 determines in step 11 whether or not the output terminal CNT2 or the output terminal CNT3 on the pen body 60A side is connected to the input terminal CNT1 on the cap unit 60B side. When the determination is made and it is determined that the output terminal CNT2 or the output terminal CNT3 is connected to the input terminal CNT1, control is performed so as to attempt to establish communication between the communication unit 66 and the terminal device 50. In addition to such control processing, a mechanical switch (cap mounting switch) that is turned on when the cap portion 60B is attached to the rear end portion of the pen body portion 60A is connected to the pen body portion 60A side or the cap portion 60B side. The operation control unit 616 may receive the ON signal from the cap mounting switch, and control to try to establish communication between the communication unit 66 and the terminal device 50.
In addition, in the processing flow of FIG. 10, in addition to the determination in step 11, for example, when use in “reference mode” is performed, the communication unit 66 receives the ON signal from the user switch SW <b> 3. It may be controlled to try to establish communication between the terminal device 50 and the terminal device 50. Furthermore, control may be performed so as to attempt to establish communication by receiving ON signals from the user switch SW3 and the writing pressure detection switch SW2. Furthermore, a communication start switch for attempting to establish communication between the communication unit 66 and the terminal device 50 is provided, and control is performed so as to attempt communication establishment by receiving an ON signal from the communication start switch. Also good.

Moreover, in addition to the structure which provides the communication part 66 in the cap part 60B, you may comprise so that the same communication part may be provided also in 60 A of pen main-body parts. Then, the operation control unit 616 determines a communication state between the communication unit 66 provided in the cap unit 60B and the terminal device 50, and a communication state between the communication unit provided in the pen body unit 60A and the terminal device 50. It may be configured to compare and select a better communication state.
Moreover, you may set a use priority between the communication part 66 provided in the cap part 60B, and the communication part provided in 60 A of pen main-body parts. For example, the communication unit 66 provided in the cap unit 60B having a higher priority may be set to use the communication unit provided in the pen body unit 60A when communication becomes unstable.

  Further, in the configuration in which the communication unit 66 is provided in the cap unit 60B, only the antenna unit that wirelessly transmits a signal to the terminal device 50 in the communication unit 66 is arranged in the cap unit 60B, and the functional unit that performs communication control is the pen body unit 60A. You may comprise so that it may arrange | position. Even in such a configuration, the antenna unit of the communication unit 66 is arranged in the cap unit 60B, so that even when the cap unit 60B is attached to the rear end portion of the pen body unit 60A, there is a member that shields the antenna unit. do not do. Therefore, stabilization of communication between the communication unit 66 and the terminal device 50 is achieved.

Next, FIG. 11 is a diagram illustrating a hardware configuration of the control / processing unit 61 of the digital pen 60.
As shown in FIG. 11, the control / processing unit 61 performs digital arithmetic processing according to a predetermined program (firmware) when performing operation control and signal processing of the digital pen 60, and processing executed by the CPU 101. RAM 102 in which programs are stored, ROM 103 in which data such as setting values used in processing programs executed by CPU 101 are stored, EEPROM and flash memory that can be rewritten and can retain data even when power supply is interrupted And an interface unit 105 that controls input / output of signals to / from each unit connected to the control / processing unit 61.
The external storage device 106 stores a program to be executed by the control / processing unit 61. When the control / processing unit 61 reads this program, operation control and signal processing with the digital pen 60 are executed. Is done.

  That is, a program for realizing the functions of the image processing unit 611, the data processing unit 612, the output unit 613, and the operation control unit 616 is read from the external storage device 106 into the RAM 102 in the control / processing unit 61. Then, based on the program read into the RAM 102, the CPU 101 performs various processes. For example, a hard disk or a DVD-ROM provided in the terminal device 50 that communicates with the digital pen 60 functions as the external storage device 106 of the digital pen 60, and this program is loaded into the RAM 102 from the terminal device 50 via the communication line. To be provided. As another providing form, there is a form provided in a state installed in the ROM 103 in advance. Furthermore, after the digital pen 60 is assembled, a program is installed in the nonvolatile memory 104 and loaded from the nonvolatile memory 104 to the RAM 102. Further, there is a form in which a program is transmitted to the digital pen 60 via a network such as the Internet and installed in the RAM 102.

Next, various processes performed on the electronic document in the handwriting information management system of this embodiment will be described.
[Print document generation processing]
FIG. 12 is a sequence diagram illustrating an example of an operation when a print document is generated in the handwriting information management system.
First, the user transmits an instruction to print an electronic document from the terminal device 10 to the document server 20 (step 101). At that time, the terminal device 10 transmits an electronic document to be printed, identification information (document ID) of the electronic document, and print settings designated by the user. Here, the print settings include the page to be printed, the number of copies, the size of the paper that is the medium, the enlargement / reduction ratio, N-up (printing that allocates N pages of the electronic document to one page of the medium), and the size of the margin area. Including settings such as.

The document server 20 receives an electronic document print instruction from the terminal device 10 (step 201). The electronic document to be printed included in the print instruction is sent to the electronic document management unit 23, and the electronic document management unit 23 registers the electronic document in the document / handwriting information storage unit 25 in association with the document ID (step 202). ).
Further, the document server 20 transmits the document ID and print setting of the electronic document instructed to be printed to the identification information server 30 (step 203). Here, for example, a URL (Uniform Resource Locator) may be used as the document ID, but other information may be used as long as the electronic document can be uniquely identified.
Thereby, the identification information server 30 receives the document ID and the print setting (step 301). Then, the identification information management unit 32 that manages the medium identification information acquires unused medium identification information from the identification information storage unit 33 (step 302). Here, the number of pieces of medium identification information to be extracted is determined according to print settings. That is, basically, the number of pieces of medium identification information obtained by multiplying the number of pages to be printed by the number of copies is extracted. However, if N-up printing is specified in the print setting information, this is also taken into consideration. For example, when printing 5 copies of a 10-page electronic document by 2-up printing, 25 (= 10 ÷ 2 × 5) pieces of medium identification information are extracted.
Next, the identification information server 30 associates the identification information, the document ID, and the print settings and registers them in the identification information storage unit 33 (step 303). Then, the identification information server 30 transmits the identification information to the document server 20 (step 304).

Thereby, the document server 20 receives the identification information (step 204). Then, a code image representing the identification information and the position information is generated (step 205).
That is, in the document server 20, the receiving unit 21 receives the medium identification information. Then, the reception unit 21 passes the received medium identification information to the identification information acquisition unit 22. Then, the identification information acquisition unit 22 first passes the acquired medium identification information to the identification code generation unit 27a, and the identification code generation unit 27a encodes the medium identification information using the method described above to generate an identification code. .
In addition, the position code generation unit 27b receives print settings from the reception unit 21, encodes position information in a range corresponding to the print settings using the above-described method, and generates a position code.
Then, the code arrangement unit 27c arranges the medium identification code and the position code according to a predetermined layout, and the code image generation unit 27e converts the image into an image using the pattern image stored in the pattern image storage unit 27d. A code image is generated by.

Thereafter, in the document server 20, the document image generation unit 26 generates a document image of the electronic document (step 206). At that time, the document image generation unit 26 receives the document ID acquired by the identification information acquisition unit 22 in step 201, and reads an electronic document to be printed from the document / handwriting information storage unit 25 based on the document ID. In step 201, the print setting acquired by the identification information acquisition unit 22 is received, and a document image is generated based on the print setting.
Then, the image composition unit 28 synthesizes the code image generated in step 205 and the document image generated in step 206 to generate a composite image (step 207).
Thereafter, the composite image is transferred to the transmission unit 29, and the transmission unit 29 transmits a print command for the composite image to the image forming apparatus 40 (step 208). Here, the composite image print command is transmitted, for example, in a PDL format in which the content to be printed as a code image is set as a PDL command to a PDL (Page Description Language) file including a sequence of print commands for document images. .

  The image forming apparatus 40 receives the composite image (document image and code image of the electronic document) from the document server 20 (step 401). Then, the image forming apparatus 40 develops the document image into an image using Y (yellow), M (magenta), and C (cyan) (step 402). Next, the document image is formed using C, M, and Y toners, and the code image is formed using K (black including carbon) toner (step 403).

In the above-described example, the identification information server 30 simply issues the identification information, and the document server 20 generates a code image including the identification information and instructs the image forming apparatus 40 to form an image. However, the identification information server 30 may generate a code image and instruct the image forming apparatus 40 to form an image.
Further, a configuration in which the code image is generated by the image forming apparatus 40 may be adopted. In that case, the document server 20 or the identification information server 30 adds the identification information to the PDL generated from the electronic document and transmits it to the image forming apparatus 40, and the image forming apparatus 40 generates a code image including the identification information. It will be.

  In the above example, the configuration in which the database (identification information storage unit 33) configured by associating the identification information, the document ID, and the print setting is placed in the identification information server 30 has been described. This is because placing such a database on a sharable device (identification information server 30) makes it possible to handle multiple users and ensure the security of electronic documents using server access control technology. However, such a configuration is not necessarily employed, and a configuration in which the above database is placed in the terminal device 10 or the document server 20 may be employed.

In the image forming apparatus 40 described above, the code image is formed by using K (black containing carbon) toner. This is because the K toner has a larger amount of infrared light absorption than the C (cyan), M (magenta), and Y (yellow) toner, and the digital pen 60 can easily read the code image. is there. However, the code image can also be formed using special toner.
Here, as the special toner, an invisible toner having a maximum absorption rate of 7% or less in the visible light region (400 nm to 700 nm) and an absorption rate of 30% or more in the near infrared region (800 nm to 1000 nm) is exemplified. . Here, “visible” and “invisible” are not related to whether they can be recognized visually. “Visible” and “invisible” are distinguished depending on whether or not an image in a printed document can be recognized by the presence or absence of color development due to absorption of a specific wavelength in the visible light region. Also, “invisible” includes those that have some color developability due to absorption of a specific wavelength in the visible light region but are difficult to be recognized by human eyes.

  Here, the code image is combined with the image of the electronic document and printed. However, the code image may be printed on white paper (notebook, tag, etc.). In that case, the document ID is not included in the print request received in step 201, the identification information is not associated with the document ID and the print setting in step 303, and the generation of the document image in step 206 is not executed. What should I do?

[Handwriting information registration process]
Next, an operation when the digital pen 60 generates handwriting information and registers it in the document server 20 will be described.
As described above, in the digital pen 60, the identification information acquisition unit 612b acquires identification information. In addition, the position information acquisition unit 612c acquires position information. Further, the handwriting information generation unit 612d connects the position information to each other to generate handwriting information. Then, the communication unit 66 transmits the identification information and handwriting information to the identification information server 30 via the terminal device 50. The identification information server 30 registers the handwriting information in the document server 20.
FIG. 13 is a sequence diagram illustrating an example of operations of the identification information server 30 and the document server 20 when registering handwriting information.
In the identification information server 30, first, the receiving unit 31 receives identification information and handwriting information from the digital pen 60 (step 311). Next, the identification information and handwriting information are passed to the identification information management unit 32, and the identification information management unit 32 takes out the document ID associated with the passed identification information from the identification information storage unit 33. Then, the document server 20 (the document server 20 in which the electronic document specified by the document ID exists) is determined as the transmission destination of the identification information and handwriting information received in step 311 (step 312). If the document ID is not associated with the identification information in the identification information storage unit 33, it is considered that the identification information is assigned to a blank sheet (note or tag). In that case, the document server 20 that manages the handwriting information for the white paper may be determined as the transmission destination.
Thereafter, the identification information and the handwriting information are transferred to the transmission unit 39, and the transmission unit 39 transmits the identification information and the handwriting information to the document server 20 determined as the transmission destination in Step 312 (Step 313).

  Thereby, in the document server 20, the receiving part 21 receives identification information and handwriting information (step 211). Then, the reception unit 21 passes the received identification information to the handwriting information management unit 24. Then, the handwriting information management unit 24 stores the identification information and the handwriting information in association with each other in the document / handwriting information storage unit 25 (step 212).

  As described above, in the digital pen 60 used in the handwriting information management system of the present embodiment, the communication unit 66 that transmits identification information, handwriting information, and position information to the terminal device 50 is provided in the cap unit 60B. . Thereby, compared with the structure in which the communication part 66 was provided in the pen main-body part 60A, stabilization of communication with the terminal device 50 is achieved. In addition, since the communication unit 66 is not disposed in the pen body 60A, the mounting space inside the pen body 60A is reduced, and the digital pen 60 can be downsized.

It is the figure which showed an example of the structure of the handwriting information management system of this Embodiment. It is the block diagram which showed an example of the function structure of the document server. It is the figure which showed an example of the image etc. which comprise a code image. It is the block diagram which showed an example of the function structure of the identification information server. 1 is an overall configuration diagram of a digital pen. It is the schematic explaining the internal structure of a digital pen. It is the figure which showed the state in which the cap part was mounted | worn by the rear-end part of the pen main-body part, and the input terminal by the side of a cap part and the output terminal by the side of a pen main-body part were connected. It is a figure explaining the connection of the input terminal which can be protruded when a cap part is mounted | worn with the rear-end part of a pen main-body part, and the output terminal provided in the recessed part. It is the block diagram which showed an example of the function structure of the control / processing part. It is the flowchart which showed an example of the procedure of transmission control of identification information, handwriting information, etc. which the operation control part of a control / processing part performs. It is the figure which showed the hardware constitutions of the control / processing part of a digital pen. It is the sequence diagram which showed an example of the operation | movement at the time of a printed document being produced | generated in a handwriting information management system. It is the sequence diagram which showed an example of operation | movement of the identification information server at the time of registering handwriting information, and a document server.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Terminal device, 20 ... Document server, 25 ... Document / handwriting information storage part, 30 ... Identification information server, 40 ... Image forming apparatus, 50 ... Terminal device, 60 ... Digital pen, 60A ... Pen main-body part, 60B ... Cap 61: Control / Processing Unit, 65 ... Information Memory, 66 ... Communication Unit, 611 ... Image Processing Unit, 612 ... Data Processing Unit, 613 ... Output Unit, 616 ... Operation Control Unit, SW1 ... Cap Switch, SW2 ... Brush Pressure detection switch, SW3 ... User switch, CNT1 ... Input terminal, CNT2, CNT3 ... Output terminal

Claims (14)

A writing unit that forms a handwriting corresponding to a user's writing operation on a medium on which a code image is printed;
Handwriting information generating means for reading the code image at a position on the medium where the handwriting is formed by the writing unit, and generating handwriting information that is information related to the user's writing operation based on the code image;
An apparatus main body in which the writing unit and the handwriting information generation unit are arranged;
A detachable attachment to the apparatus main body, and a protective cover for protecting the writing part;
The handwriting information generation apparatus, wherein the protective cover unit includes all or part of wireless transmission means for wirelessly transmitting the handwriting information generated by the handwriting information generation means to an external device. The apparatus body unit wirelessly transmits the handwriting information generated by the handwriting information generation unit in a state where the protective cover unit is attached to an end of the apparatus body unit on the side where the writing unit is disposed. The handwriting information in the state where the first output terminal for outputting to the means and the protective cover portion are attached to the end of the apparatus main body opposite to the side where the writing portion is disposed And a second output terminal that outputs to
The protective cover portion is connected to the first output terminal in a state in which the protective cover portion is attached to an end portion of the device main body where the writing portion is disposed, and the device main body portion 2. The handwriting information generation according to claim 1, wherein an input terminal connected to the second output terminal is disposed in a state of being attached to an end opposite to the side on which the writing part is disposed. apparatus. Further comprising handwriting information output control means for controlling the output destination of the handwriting information generated by the handwriting information generation means, and storage means for storing the handwriting information generated by the handwriting information generation means,
In the state where the handwriting information output control means is not connected to the input terminal arranged in the protective cover part and the first output terminal or the second output terminal arranged in the apparatus main body part. 3. The handwriting information generation apparatus according to claim 2, wherein the handwriting information generated by the handwriting information generation unit is output to the storage unit.   The handwriting information output control means outputs the handwriting information generated by the handwriting information generation means to the storage means in a state where communication between the wireless transmission means and the external device is not established. The handwriting information generating apparatus according to claim 3.   The handwriting information output control means is connected to the input terminal arranged in the protective cover part and the first output terminal or the second output terminal arranged in the apparatus main body part, and 4. The handwriting information generated by the handwriting information generation unit in a state where communication between the wireless transmission unit and the external device is established, is output to the wireless transmission unit. Handwriting information generation device.   2. The handwriting information generating apparatus according to claim 1, wherein the apparatus main body is configured to be capable of mounting a plurality of the protective cover portions in which all or a part of the wireless transmission means having different communication methods are arranged. .   2. The handwriting information generating apparatus according to claim 1, wherein the protective cover portion includes an antenna portion that constitutes a part of the wireless transmission means and that wirelessly transmits a signal to the external device. A handwriting information generating device that generates handwriting information that is information related to a user's writing operation on a medium on which a document image and a code image based on an electronic document are printed;
The handwriting information management device that acquires the handwriting information generated by the handwriting information generation device and manages the acquired handwriting information in association with the medium or the electronic document printed on the medium;
An information transmitting device that acquires the handwriting information from the handwriting information generation device and transmits the acquired handwriting information to the handwriting information management device,
The handwriting information generation device
A writing unit for forming a handwriting corresponding to the writing operation of the user on the medium;
Handwriting information generating means for reading the code image at a position on the medium where the handwriting is formed by the writing unit, and generating the handwriting information based on the code image;
An apparatus main body in which the writing unit and the handwriting information generation unit are arranged;
A detachable attachment to the apparatus main body, and a protective cover for protecting the writing part;
The handwriting information management system, wherein the protective cover part includes all or part of wireless transmission means for wirelessly transmitting the handwriting information generated by the handwriting information generation means to the information transmission device. The device body portion of the handwriting information generation device is generated by the handwriting information generation means in a state where the protective cover portion is attached to an end portion of the device body portion on which the writing portion is disposed. The first output terminal for outputting handwriting information to the wireless transmission means, and the handwriting in a state where the protective cover part is attached to the end of the apparatus main body opposite to the side where the writing part is disposed. A second output terminal for outputting information to the wireless transmission means,
The protective cover part of the handwriting information generating device is connected to the first output terminal in a state where the protective cover part is attached to an end of the apparatus main body on the side where the writing part is disposed, and The input terminal connected to the second output terminal in a state of being attached to the end of the apparatus main body opposite to the side where the writing unit is arranged is arranged. 8. The handwriting information management system according to 8. The handwriting information generation device stores handwriting information output control means for controlling an output destination of the handwriting information generated by the handwriting information generation means, and the handwriting information generated by the handwriting information generation means. And further comprising means,
In the state where the handwriting information output control means is not connected to the input terminal arranged in the protective cover part and the first output terminal or the second output terminal arranged in the apparatus main body part. The handwriting information management system according to claim 9, wherein the handwriting information generated by the handwriting information generation unit is output to the storage unit.   The handwriting information output control means of the handwriting information generation apparatus stores the handwriting information generated by the handwriting information generation means in the storage means in a state where communication between the wireless transmission means and the external device is not established. 11. The handwriting information management system according to claim 10, wherein the handwriting information management system outputs the handwriting information.   The handwriting information output control means of the handwriting information generating device includes the input terminal arranged in the protective cover part and the first output terminal or the second output terminal arranged in the apparatus main body part. The handwriting information generated by the handwriting information generation unit is output to the wireless transmission unit in a state where the communication is established and communication between the wireless transmission unit and the external device is established. The handwriting information management system according to claim 10.   9. The handwriting information according to claim 8, wherein the information transmission device downloads software for operating the wireless transmission unit to the wireless transmission unit disposed in the protective cover portion of the handwriting information generation device. Management system.   9. The handwriting information generation device is configured such that a plurality of the protective cover portions in which all or a part of the wireless transmission units having different communication methods are arranged in the device main body portion can be attached. The handwriting information management system described.

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