JP2012118849A - Electronic writing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a right page to be additionally described to correspond to stroke data of additional description contents and to be stored without instruction for imparting page numbers by an operator.SOLUTION: A handwriting input device produces stroke data corresponding to descriptions onto a notebook by an electronic pen 2, imparts a page number identifying a page to the stroke data, and stores the stroke data correspondingly to the imparted page number. Furthermore, the handwriting input device includes a turn detection section 76 which detects turning operations in an advancing direction or in a backward direction when a page of the notebook is turned. After the turning operation in the backward direction is detected by the turn detection section 76, first stroke data are produced and further, when the turning operation in the advancing direction is detected by the turn detection section 76, it is determined if it is returned to the latest page just before the turning operation in the backward direction is detected by the turn detection section 76.

Description

  The present invention relates to an electronic writing device capable of electronically inputting an operator's writing content.

  2. Description of the Related Art In recent years, an electronic writing device that can electronically input handwritten content of an operator is known. In this electronic writing apparatus, an operator writes a desired handwritten character string or the like on a writing surface of a writing object using an electronic writing instrument such as a so-called electronic pen. At the same time, a magnetic field is transmitted from the electronic writing instrument, and the magnetic field is received by a coil disposed on the back surface of the writing object. Thereby, stroke data is generated by the temporal change of the position information corresponding to the writing operation on the writing surface, and stored as an electronic file. In the above-mentioned writing object used in such an electronic writing apparatus, usually, a plurality of paper media are stacked, and an operator performs writing on each page while turning the paper media in order. .

  As an example of such an electronic writing apparatus, there is a technique described in Patent Document 1, for example. In this prior art, a turning detection unit for detecting the turning operation of the writing object is provided. Thereby, the electronic file of the input stroke data is stored in correspondence with each page detected by the turning detection unit.

JP 2001-147771 A

  However, the following problems exist in the above conventional technology. That is, since the thickness of the paper medium is generally relatively thin, it is difficult for the turning detection unit to accurately detect the number of turning pages even if the turning direction of the writing object can be reliably determined. In particular, when the operator turns a plurality of paper media, it is difficult to accurately detect the number of the turned sheets.

  On the other hand, when the operator sequentially writes on the script as described above, the operator turns the page of the script in the direction of returning to the past page and appends to the past page on his / her own will. May do. When the additional writing is finished, the operator returns the page of the cursive body to the advance direction and returns to the original page, that is, the latest page. When such additional writing is performed, the above-described electronic writing apparatus of the prior art is turned in the return direction or the advance direction due to the low detection accuracy as described above, and thus there is a possibility that the number of turning sheets cannot be detected accurately. In this case, it is possible that the page actually entered and the page recognized by the device will not match by going back multiple pages at the time of appending and the page number recognized by the operator at that time. It was necessary to perform operations such as input and grant.

  The object of the present invention is to recognize and store the stroke data of the additional writing contents as the additional writing data even if the operator does not instruct the assignment of the page number. It is to provide an electronic writing device that can be used.

  In order to achieve the above object, the first invention has a coil corresponding to the writing portion of the substantially notebook-shaped writing body provided with the writing portion, and a signal generating means including a magnetic field applying coil, Acquires position information of the electronic writing instrument acquired based on the reception result of the coil for position detection transmitted from the electronic writing instrument in order to perform data input corresponding to the writing content to the writing object. Using the position information acquired by the position acquisition means, stroke data generation means for generating stroke data corresponding to the description on the writing object by the electronic writing instrument, and the stroke data generation Page adding means for assigning a page number for identifying the page of the cursive body to the stroke data generated by the means, and the stroke data generating means Storage control means for storing the generated stroke data in association with the page number given by the page giving means, and when the page of the writing object is turned, its page advance direction or page return The page turning detection means for detecting the turning operation of the cursive body in the direction, and the page turning detection means that is detected by the position acquisition means after the page turning detection is detected by the page turning detection means. When the first stroke data is generated by the stroke data generation means using the position information and the page turning detection means detects that the page is turned in the page advance direction, the page turning detection means To determine whether or not the page returned to the previous page immediately before it was detected that the page was turned in the page return direction. Return determination means, and the storage control means stores the first stroke data as additional write data in association with a temporary page number for additional writing indicating that the page adding means is an additional page. It is characterized by doing.

  The electronic writing device according to the first aspect of the present invention includes a writing portion that includes a writing portion and performs a page advance and return by a turning operation. At least one coil is arranged corresponding to the writing part. An electronic writing instrument having a signal generating means including a magnetic field application coil transmits a writing signal for position detection, and the writing signal is received by the coil. When the operator uses the electronic writing instrument to describe the object to be written, position information of the electronic writing instrument corresponding to the writing operation is acquired by the position acquisition unit. Using the temporal change of the position information, stroke data corresponding to the description on the writing object is generated by the stroke data generating means. A page number corresponding to the actual page of the script is assigned to the generated stroke data by the page assigning means. Thereby, the page number equivalent to the actual description page when the operator sequentially describes the writing object is sequentially given to the stroke data corresponding to the description.

  As described above, when the operator sequentially writes on the script, the operator turns the page of the script in the returning direction and goes back to the past page on his / her own will. There is a case. When the additional writing is finished, the operator returns the page of the cursive body to the advance direction and returns to the original page, that is, the latest page. However, when the additional writing is performed over a plurality of pages, the operator returns the last page after sequentially completing the additional writing for all of the plurality of pages to be added while returning the page in the advance direction. .

  Here, the electronic writing apparatus according to the first invention of the present application is provided with a page turning detection means corresponding to the above turning operation. When the operator turns the page of the script in the advance direction or the return direction as described above, this is detected by the page turning detection means. At that time, depending on the mode of the page turning operation, for example, when the operator turns a plurality of paper sheets of the cursive at the same time or turns it quickly, the page turning detection means accurately performs the page turning operation. It may not be detected. In this case, it is currently in a state where the operator has added to the cursive body, or has returned to the latest page, or whether the operator has yet to append to the cursive body. The electronic writing device may not be recognized correctly.

  Therefore, the electronic writing apparatus according to the first invention of the present application is provided with a return determination means. The return determination means generates the first stroke data by the stroke data generation means using the position information acquired by the position acquisition means after the page turning detection means detects that the page has been turned in the page return direction. If the page turning detection means detects that the page has been turned in the page advance direction, the determination of the conforming condition and the nonconforming condition of the original page is repeated to determine whether the original page has been restored. .

  In addition, the storage control means stores the first stroke data as additional write data in association with a temporary page number for additional writing that indicates that the page adding means is an additional page. Thus, the first stroke data can be stored in association with an appropriate temporary page number for additional writing without assigning an accurate page number.

  According to a second invention, in the first invention, the writing body includes a first writing portion and a second writing portion, and is configured to be openable and closable, and the coil is the first of the writing body. A first coil corresponding to the writing unit; and a second coil corresponding to the second writing unit, wherein the return determination unit uses the position information acquired by the position acquisition unit, and the electronic writing instrument. The page is turned in the page return direction by the writing area detecting means for detecting which area is included in the first writing part or the second writing part and the page turning detecting means. Is detected, the first stroke data is generated by the stroke data generation unit using the position information acquired by the position acquisition unit, and the page turning detection unit further advances the page. When the second stroke data is generated by the stroke data generation unit using the position information acquired by the position acquisition unit after it is detected that the page has been turned, at least the writing area Using the position information acquired by the position acquisition means corresponding to the original page immediately before the page turning detection means detects that the page has been turned in the page return direction detected by the detection means. The end point of the original stroke data generated by the stroke data generation means is compared with the start point of the second stroke data, and a page number to be associated with the second stroke data is determined for the original stroke data. First determination means for determining whether or not to use the original page number assigned by the page assignment means. The storage control unit associates the second stroke data with the original page number when the first determination unit determines that the page number to be associated with the second stroke data is the original page number. It is characterized by being attached and memorized.

  In the electronic writing device according to the second aspect of the present invention, the writing body includes a first writing portion and a second writing portion, and is configured to be openable and closable. The coil includes at least one first coil corresponding to the first writing unit and at least one second coil corresponding to the second writing unit. The return determination means includes a writing area detection means and a first determination means. When the operator turns the cursive object in the page return direction with the intention of additional writing, the position of the end point of the original stroke data generated by the stroke data generating means immediately before the page turning is written. It is detected by the area detecting means. Further, after the above, when the operator turns the writing object in the page advance direction, the position of the start point of the second stroke data generated by the stroke data generation means after performing the page turning is detected in the writing area. Detected by means. When the additional writing is completed and the page returns to the same page as before the additional writing starts, the original stroke data corresponds to the written content described immediately before the additional writing, and the second stroke data is the continuation of the written content. Equivalent to. Therefore, there should be a close relationship between the position of the end point of the original stroke data and the position of the start point of the second stroke data. Therefore, in the electronic writing device according to the second aspect of the present invention, the first determination means compares the position of the end point of the original stroke data with the position of the start point of the second stroke data. In other words, the first determination means compares whether the second stroke data is a continuation of the original stroke data. Then, as a result of the above, the first determination means determines whether or not to use the original page number of the original stroke data for the second stroke data. When the first determination unit determines to associate the original page number with the second stroke data, the storage control unit associates and stores the second stroke data with the original page number. As a result, when all of the additional writing by the operator is completed at that time and the writing mode returns to the normal writing order, the correct page number corresponding to the return is given to the subsequent stroke data. . As a result of the above, the electronic writing device of the second invention of the present application returns to the original latest page after completion of the operator's additional writing even when the page turning detection means cannot accurately detect the page turning operation. It is possible to accurately recognize that it is in a state.

  In a third aspect based on the second aspect, the first determination means uses the writing area detection means to determine that the end point of the original stroke data is an intermediate area of the first writing section and the second stroke data The start point is an intermediate region of the second writing unit, or the end point of the original stroke data is an intermediate region of the second writing unit and the start point of the second stroke data is the first writing unit Is detected, it is determined that the page number to be associated with the second stroke data is not the original page number.

  In the case of a two-page spread with a first writing part and a second writing part, in a normal writing mode by an operator, after writing to the first writing part, the second writing part is transferred to the second writing part. It is natural that when the writing of the part is finished, the page is turned and the first writing part is made again. Therefore, in the case where additional writing is performed in a state where the original stroke data is completed in the middle of the first writing part, when the additional writing is completely completed, the second stroke data starts from the middle region of the first writing part, It should start from the writing start area of the second writing part corresponding to the next page of the first writing part. Alternatively, when additional writing is performed in a state where the original stroke data is completed in the middle of the second writing part, when the additional writing is completely completed, the second stroke data starts from the middle region of the second writing part, It should start from the writing start area of the first writing part corresponding to the next page of the second writing part. Therefore, in the third invention of the present application, when the first determination means does not satisfy at least the above, the page number to be associated with the second stroke data is not the original page number, that is, the postscript is not completely completed. . As a result, it is possible to accurately recognize that the additional writing by the operator has not been completed yet and the operator has not returned to the original latest page.

  A fourth invention is the case where the page number to be associated with the second stroke data is not determined to be the original page number by at least the first determination means in the second or third invention, and After the second stroke data is generated by the stroke data generation unit using the position information acquired by the position acquisition unit, it is further detected that the page is turned in the page advance direction by the page turning detection unit. The page number to be associated with the second stroke data according to whether or not the number of page turning detected in the page advance direction by the page turning detection means is a plurality of pages. Second determination for determining whether to use the original page number assigned by the page assigning means And when the page number to be associated with the second stroke data is determined to be the original page number by the second determination unit, the storage control unit converts the second stroke data into the original stroke number. It is characterized by being stored in association with a page number.

  As described above, when additional writing is performed in a state where the original stroke data is completed in the middle of the second writing part, the second stroke data is obtained from the intermediate region of the second writing part when the additional writing is completed. It should start from the writing start area of the first writing part corresponding to the next page of the second writing part. When returning to the middle part of the second writing part, which is the former, if writing to the second writing part is finished immediately, before starting from the first writing part on the next page, Page turning is performed. Since the number of page turning pages at this time is one page, when the number of page turning pages is a plurality of pages, this is not the mode of return at the time of completion of additional writing as described above. Therefore, in the fourth invention of the present application, paying attention to this point, the second determination means determines the page number of the second stroke data as the original page number depending on whether the number of page turnings in the advance direction is a plurality of pages. It is determined whether or not to do. As a result, it is possible to accurately recognize that the additional writing by the operator has not been completed yet and the operator has not returned to the original latest page.

  According to a fifth aspect of the present invention, in the fourth aspect of the invention, the second determination means determines the second stroke data when the number of page turning detected in the page advance direction by the page turning detection means is a plurality of pages. It is determined that the page number to be associated with is not the original page number.

  In the fifth invention of the present application, based on the above-mentioned attention, when the number of page turning executed after at least the generation of the second stroke data is performed by the second determination means is a plurality of pages, the second stroke data The page number to be associated with is regarded as not the original page number. That is, the second determination means regards that the additional writing is not completely completed. As a result, it is possible to accurately recognize that the additional writing by the operator has not been completed yet and the operator has not returned to the original latest page.

  A sixth invention is the case where the page number to be associated with the second stroke data is not determined to be the original page number by at least the second determination means in the fourth or fifth invention, and When the second stroke data is generated by the stroke data generation means and the page turning detection means detects that the page is turned in the page advance direction, the second stroke data generated until the page is turned is generated. Whether or not the page number to be associated with the second stroke data is set to the original page number assigned by the page assigning means to the original stroke data, using the detection result of the writing area detecting means for the stroke data. A third determination unit for determining, and the storage control unit is configured by the third determination unit. Serial When the second stroke data page number to be associated to is determined to the be the original page number, characterized by storing the second stroke data wherein in association with the original page number.

  As described above, when additional writing is performed in a state where the original stroke data is completed in the middle of the second writing unit, the second stroke data generated after turning the page in the feed direction at the end of additional writing is the second stroke data. It may start from the writing start area of the first writing part corresponding to the next page of the writing part. If the second stroke data started from the writing start area of the first writing part continues further, the process proceeds to the second writing part corresponding to the next page. When the description in the second writing section is completed, the page is turned in the feed direction by the operator.

  Accordingly, in the sixth invention of the present application, paying attention to this point, the third determination means writes the second stroke data generated between the page turning in the two advance directions and the page turning in the advance direction. It is determined whether or not the page number of the second stroke data is set as the original page number using the detection result by the area detecting means. As a result, it is possible to accurately recognize that the additional writing by the operator has been completed and the state has returned to the original latest page.

  In a seventh aspect based on the sixth aspect, the third determining means is configured such that the writing area detecting means causes the starting point of the second stroke data to be the writing start area of the first writing section, and the second When it is detected that the starting point in the second writing part of the stroke data is the writing starting area of the second writing part, the page number to be associated with the second stroke data is the original page number. It is characterized by determining.

  In the seventh invention of the present application, based on the above-mentioned attention, the start point of the second stroke data generated during the page turning operation executed twice by the third determination means is the writing start area of the first writing unit. When the starting point in the second writing section is also the writing start area, the page number to be associated with the second stroke data is regarded as the original page number. That is, the third determination means regards that the additional writing has been completed. As a result, it is possible to accurately recognize that the additional writing by the operator has been completed and the state has returned to the original latest page.

  An eighth invention is the above-described sixth or seventh invention, wherein at least the page number to be associated with the second stroke data is not determined by the third determination means as the original page number, and The position information acquired by the position acquisition unit after the second stroke data is generated by the stroke data generation unit and the page turning detection unit detects that the page is turned in the page advance direction. When the third stroke data is generated by the stroke data generation means using the above, the start and end points of the second stroke data detected by the writing area detection means, and the start of the third stroke data The page number to be correlated with the second stroke data is compared with the original stroke. 4th determination means for determining whether or not the original page number assigned to the page data by the page assignment means is provided, and the storage control means associates the second stroke data with the fourth determination means. When it is determined that the power page number is the original page number, the second stroke data is stored in association with the original page number.

  As described above, when the second stroke data generated after the page turning operation in the page advance direction is started from the first writing unit, the writing proceeds and moves to the second writing unit corresponding to the next page. When the writing proceeds further, the page turning operation is performed by the operator, and the operation proceeds to the first writing unit corresponding to the next page. In this case, at least the end point of the second stroke data should be located in the second writing part, and the starting point of the third stroke data should be located in the first writing part. Alternatively, when the second stroke data generated after the page turning operation in the page advance direction is started from the second writing unit, the page turning operation is performed by the operator when writing proceeds, and the next page is supported. Move to the first writing section. When the writing further proceeds, the second writing section corresponding to the next page is further moved. In this case, at least the end point of the second stroke data should be located in the second writing part, and the starting point of the third stroke data generated after the turning operation should be located in the first writing part. Therefore, in the eighth invention of the present application, paying attention to this point, the fourth determination means compares the start point and end point of the second stroke data with the start point of the third stroke data, and the comparison result is obtained. It is used to determine whether or not the page number of the second stroke data is the original page number. As a result, it is possible to accurately recognize that the additional writing by the operator has not been completed and the state has not returned to the original latest page.

  In a ninth aspect based on the eighth aspect, the fourth determining means is configured such that the writing area detecting means has a start point and an end point of the second stroke data in the first writing portion and the third stroke data. Or the start point and end point of the second stroke data are in the second writing part and the start point of the third stroke data is in the second writing part. If it is detected that there is, the page number to be associated with the second stroke data is determined not to be the original page number.

  In the ninth invention of the present application, based on the above-mentioned attention, the fourth determination means causes the start point and the end point of the second stroke data to be in the first writing part, and the start point of the third stroke data is also set to the first writing part. If there is, and if the start point and end point of the second stroke data are in the second writing part and the start point of the third stroke data is also in the second writing part, it should be associated with the second stroke data The page number is considered not the original page number. That is, the fourth determination means regards that the additional writing is not completely completed. As a result, it is possible to accurately recognize that the additional writing by the operator is not completed and the state has not been returned to the original latest page.

  A tenth aspect of the present invention is the above-described eighth or ninth aspect, wherein at least the fourth determination unit does not determine that the page number to be associated with the second stroke data is not the original page number, and When the third stroke data is generated by the stroke data generation means and the page turning detection means detects that the page is turned in the page advance direction, the third stroke data generated until the page is turned is generated. Whether or not the page number to be associated with the second stroke data is set to the original page number assigned by the page assigning means to the original stroke data, using the detection result of the writing area detecting means for the stroke data. A fifth determining means for determining, wherein the storage control means is controlled by the fifth determining means. The second when the page number to be associated with the stroke data is determined to the be the original page number, characterized by storing the second stroke data in association with the original page number.

  As described above, when additional writing is performed in a state where the original stroke data is finished in the middle of the first writing part, the second stroke data is in the middle of the first writing part after turning the page in the feed direction at the end of the additional writing. After the writing progresses and moves to the second writing part corresponding to the next page, after the page turning operation by the operator, the third stroke data is further received from the first writing part corresponding to the next page. May be started. In this case, the second stroke data may be started from the writing start area of the second writing unit. Alternatively, when additional writing is performed in a state where the original stroke data is finished in the middle of the second writing part, the second stroke data is started from the middle of the second writing part after turning the page in the feed direction at the end of the additional writing. In some cases, the writing progresses, and after the page turning operation by the operator, the third stroke data is started from the first writing unit corresponding to the next page. In any of these cases, the third stroke data is started from the writing start area of the first writing unit.

  Accordingly, in the tenth invention of the present application, paying attention to this point, the fifth determination means uses the detection result by the writing area detection means for the third stroke data generated after the page turning in the advance direction, It is determined whether or not the page number of the 2-stroke data is used as the original page number. As a result, it is possible to accurately recognize that the additional writing by the operator has been completed and the state has returned to the original latest page.

  In an eleventh aspect based on the tenth aspect, the fifth determining means detects that the starting point of the third stroke data is the writing start area of the first writing section by the writing area detecting means. In this case, it is determined that the page number to be associated with the end point of the third stroke data is the original page number.

  In the 11th invention of the present application, based on the above-mentioned attention, when the start point of the third stroke data generated after the page turning operation by the fifth determining means is the writing start area of the first writing unit, The page number to be associated with the end point of the third stroke data is regarded as the original page number. That is, it is considered that the additional writing is completely completed by the fifth determining means. As a result, it is possible to accurately recognize that the additional writing by the operator has been completed and the state has returned to the original latest page.

  In a twelfth aspect based on the second aspect, there is provided an operation means capable of instructing increase / decrease of a page number to be given by the page giving means, wherein the first determination means is the page turning detection means in the page return direction. After it is detected that the page is turned, the first stroke data is generated by the stroke data generation unit using the position information acquired by the position acquisition unit, and further, the page turning detection unit detects the page. When it is detected that the page has been turned in the advance direction, the decrease number of the page number instructed by the operation means matches the page turn number detected in the page advance direction by the page turning detection means. In this case, it is determined that the page number to be associated with the second stroke data is the original page number. To.

  In the twelfth aspect of the present invention, there is provided operating means that allows the operator to specify a page number when the operator turns the page in the page turning direction or the page returning direction. When the operator instructs to decrease the page number in the page return direction by using this operation means and performs additional writing, and when turning the page in the page turning direction after the additional writing, the page number in the page turning direction is inadvertently moved by the operating means. It is possible to forget to instruct the increase. In the eleventh aspect of the present invention, in response to such a case, the first determination means is instructed by the operation means and the number of page turning by the page turning detection means when the page turning is performed in the page turning direction. Compare the page number decrease. When the page turning number and the page number decrease number coincide with each other, it is considered that the operator has simply forgotten the instruction to increase the page number as described above, and the second stroke data includes the original page number. Associate page numbers. As a result, it is possible to accurately recognize that the operator's additional writing has been completed and the original latest page has been reliably returned.

  According to the present invention, even if the operator does not instruct the assignment of a page number, the correct page to be additionally written can be made to correspond to the stroke data of the additionally written content and stored.

It is an external appearance perspective view, a conceptual top view, and a conceptual side view showing the mode at the time of use of the handwriting input device of one embodiment of the present invention. It is a functional block diagram showing the functional structure of a handwriting input device. It is a notional top view showing the internal configuration of a coil sheet. It is an external appearance perspective view showing the structure of a turning detection part. It is a figure explaining the case where a page movement is determined using a page switching key. It is a figure explaining the case where a page movement is determined only by turning detection. It is a figure explaining the newest page nonconformity conditions contrary to the 1st principle. It is a figure explaining the newest page nonconformity conditions contrary to the 1st principle. It is a figure explaining the newest page nonconformity conditions contrary to the 2nd principle. It is a figure explaining the newest page nonconformity conditions contrary to the 2nd principle. It is a figure explaining the newest page nonconformity conditions contrary to the 2nd principle. It is a figure explaining the newest page adaptation conditions. It is a figure explaining the newest page adaptation conditions. It is a flowchart showing the control procedure which CPU of a coordinate detection apparatus performs. It is a flowchart showing the control procedure which CPU of a coordinate detection apparatus performs. It is a flowchart showing the control procedure which CPU of a coordinate detection apparatus performs. It is a flowchart showing the control procedure which CPU of a coordinate detection apparatus performs. It is a flowchart showing the control procedure which CPU of a coordinate detection apparatus performs. It is a conceptual side view of the handwriting input device provided with the turning detection part which has an image sensor.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1A, a handwriting input device 1 that is an electronic writing device according to the present embodiment includes a coordinate detection device 3 that is an electronic recording terminal. At the time of use, the operator holds the electronic pen 2 which is an electronic writing instrument. In addition to the function as a writing instrument, the electronic pen 2 functions as an input unit for input position coordinates, that is, coordinate data.

  As shown in FIGS. 1 (a), 1 (b), and 1 (c), the coordinate detection device 3 has a predetermined first direction (left and right direction in FIG. 1 (b)) so as to substantially cover the notebook 30. The sheet body 10 made of a plastic member is formed into a shape that can be spread. In the following description, the first direction (the left-right direction in FIG. 1B) is the first based on the state in which the sheet body 10 is installed in the above-described spread shape (the state in FIG. 1B). A direction 4 is defined, and a second direction (vertical direction in FIG. 1B) perpendicular to the first direction 4 is defined as a second direction 5.

  The sheet body 10 includes a left sheet portion 10 </ b> L, a right sheet portion 10 </ b> R, and a bent portion 10 </ b> T located at the center portion in the first direction 4. The left sheet portion 10L is provided on one side (left side in FIG. 1B) of the bent portion 10T along the first direction 4 and includes a left coil sheet 100L. The right sheet portion 10R is provided on the other side (the right side in FIG. 1B) of the bent portion 10T along the first direction 4 and includes a right coil sheet 100R. The bent portion 10T is a portion that can be bent by the operator.

  As shown in FIG. 1B and FIG. 1C, a control circuit unit case 25 is provided at the end opposite to the bent portion 10T in the first direction 4 of the left seat portion 10L, that is, the left end portion. ing. Note that the control circuit unit case 25 may be provided at the end of the right seat portion 10R opposite to the bent portion 10T in the first direction 4, that is, the right end portion. A control circuit unit 20 and a battery 21 are housed in the control circuit unit case 25. A notebook 30 having a shape that can be spread in the first direction 4, which is a substantially notebook-shaped writing body, is arranged so as to overlap the sheet body 10. Note that a notebook holding section 11 as shown in FIG. 1A may be provided on each of the left sheet section 10L and the right sheet section 10R. Thereby, the coordinate detection apparatus 3 can be integrated with the notebook 30 easily and reliably, and the handleability by the operator can be improved.

  The operator uses the electronic pen 2 to write a handwritten desired character string or the like on the left writing surface 31L or the right writing surface 31R of the notebook 30. By the movement of the electronic pen 2 corresponding to the writing operation, stroke data to be described later corresponding to the written character string or the like is generated, and the generated stroke data is stored in the electronic file. At that time, the operator switches the page of the electronic file, that is, advances the page or moves the page in the same way as writing is performed while actually switching the page to the left writing surface 31L, the right writing surface 31R, etc. of the notebook 30 using ink. The data can be saved while being restored (described later). This page switching of the electronic file is performed by operating page switching keys 77 and 78 (see FIG. 2 described later). The left writing surface 31L and the right writing surface 31R correspond to the first writing portion and the second writing portion described in each claim, respectively, and collectively correspond to the writing portion described in each claim.

  Further, the coordinate detection device 3 includes a turning detection unit 76 as a page turning detection unit. The turning detection unit 76 has a substantially rectangular parallelepiped arm 76a. The left end of the turning detection unit 76 is fixed to the control circuit unit case 25, and the right end of the turning detection unit 76 is provided so as to overlap the left side edge of the left writing surface 31 </ b> L of the notebook 30. As a result, a plurality of sheets, in this example, a paper medium, that are positioned on the left writing surface 31L of the notebook 30 in an open state are sandwiched between the arm 76a of the turning detection unit 76 and the left sheet unit 10L.

  In this example, the notebook 30 is bound in a left-close manner. That is, the operator advances the page by turning the paper located on the right writing surface 31R to the left, and returns the page by turning the paper located on the left writing surface 31L to the right. When the operator performs a turning operation for advancing the page with respect to the notebook 30, the operator performs an operation of inserting the sheet between the arm 76a of the page turning detection unit 76 and the left sheet portion 10L. When performing an operation of turning the page back, the operator performs an operation of extracting the sheet from between the arm 76a of the turning detection unit 76 and the left sheet portion 10L. The page turning detection unit 76 can determine the page turning direction by detecting such insertion and removal of paper. The detailed configuration of the turning detection unit 76 will be described later with reference to FIG.

  When the operator uses the handwriting input device 1, a power switch (not shown) provided in the electronic pen 2 is turned on. As shown in FIG. 2, the electronic pen 2 includes a pen tip 2a provided at the tip, a tip switch 42 that operates according to the contact state of the pen tip 2a with the writing surface 31, and an LC oscillation that is a signal generating means. A circuit 41, a magnetic field application coil 44, and a battery 43 are included.

  The magnetic field application coil 44 is electrically connected to the LC oscillation circuit 41 and transmits an alternating magnetic field (hereinafter simply referred to as “magnetic field” as appropriate) as a position detection writing signal.

  The tip switch 42 operates according to the contact state of the pen tip 2a with the writing surfaces 31L and 31R. The tip switch 42 outputs to the LC oscillation circuit 41 a command signal S0 for switching between transmission and stop of the magnetic field from the magnetic field application coil 44. The tip switch 42 is turned on when the operator presses the pen tip 2a against the writing surfaces 31L and 31R in order to write characters or the like, that is, when the pen is down. In this case, the command signal S0 is output to the LC oscillation circuit 41. On the other hand, when the operator stops writing of characters or the like and moves the pen tip 2a away from the writing surfaces 31L and 31R, that is, when the pen is up, the tip switch 42 is turned off. In this case, the command signal S0 is not output to the LC oscillation circuit 41.

  The LC oscillation circuit 41 generates an alternating magnetic field (hereinafter simply referred to as “magnetic field” as appropriate) when the command signal S 0 is input from the tip switch 42, and transmits the alternating magnetic field via the magnetic field application coil 44. The alternating magnetic field functions as a writing signal for inputting data corresponding to the writing contents on the writing surfaces 31L and 31R.

  The battery 43 supplies power to the LC oscillation circuit 41 when the power switch of the electronic pen 2 is turned on.

  As shown in FIG. 2, the coordinate detection device 3 includes coil sheets 100 </ b> L and 100 </ b> R, a control circuit unit 20, and a battery 21.

  The coil sheets 100L and 100R include a sense coil unit 110 as shown in FIG. That is, the coil sheets 100L and 100R are configured by resin-molding the sense coil portions 110 arranged as shown in FIG. 3 into, for example, a rectangular thin plate shape. The sense coil part 110 provided in the coil sheet 100L corresponds to the first coil described in each claim, and the sense coil part 110 provided in the coil sheet 100R corresponds to the second coil described in each claim. Together, they correspond to the coil described in each claim.

  As shown in FIG. 3, the sense coil unit 110 includes m loop-shaped sense coils X <b> 1 to Xm arranged in the x-axis direction corresponding to the first direction 4 and y corresponding to the second direction 5. It is constituted by n loop-shaped sense coils Y1 to Yn arranged in the axial direction. The sense coils X1 to Xm and the sense coils Y1 to Yn are arranged in an orthogonal positional relationship. The sense coils X1 to Xm and Y1 to Yn are formed of, for example, a copper wire having an insulating coating layer formed on the surface. The sense coils X1 to Xm and Y1 to Yn transmit information from the electronic pen 2 to the coordinate detection device 3 in response to the magnetic field generated from the LC oscillation circuit 41 of the electronic pen 2 and transmitted from the magnetic field application coil 44. A signal S1 (see FIG. 2) for input is generated. That is, the electronic pen 2 is connected to the coordinate detection device 3 so as to be able to transmit information. In addition, the sense coils X1 to Xm and Y1 to Yn are connected to a later-described multiplexer 62 by lead lines not shown and described.

  Each of the sense coils X1 to Xm is formed in a substantially rectangular shape including a side having a width P1 in the x-axis direction and a side having a length P2 in the y-axis direction longer than P1. Each of the sense coils X1 to Xm is arranged continuously in the x-axis direction at a predetermined constant pitch. For example, the adjacent sense coils X1 to Xm are overlapped with each other at a half pitch of P1.

  Each of the sense coils Y1 to Yn is formed in a substantially rectangular shape having a side having a width P3 in the x-axis direction and a side having a length P1 in the y-axis direction shorter than P3. Each of the sense coils Y1 to Yn is continuously arranged in the y-axis direction at a predetermined constant pitch. For example, the adjacent sense coils Y1 to Yn are overlapped at a pitch of 1/2 of P1.

  In FIG. 3, for the sake of simplicity, the sides of the sense coils X1 to Xm and the sense coils Y1 to Yn are not overlapped for convenience. Not. Further, the lead lines entering the multiplexer 62 are omitted, and the shapes of the sense coils X1 to Xm, Y1 to Yn are illustrated.

  Returning to FIG. 2, the control circuit unit 20 includes a microcomputer 80, a multiplexer 62 (hereinafter referred to as “MUX 62” as appropriate), an amplifier circuit 64, a rectifier circuit 66, a flash memory 72, a communication interface 73, and a display. A section 74, a turning detection section 76, and a page "advance" key 77 and a page "return" key 78 as operation means.

  The microcomputer 80 controls various processes executed by the coordinate detection device 3. In the microcomputer 80, the CPU 80a, the ROM 80b, the RAM 80c, and other A / D conversion function units, interrupt function units, and the like are configured as one integrated circuit.

  The MUX 62 sequentially selects one sense coil among the sense coils X1 to Xm and Y1 to Yn of the sense coil unit 110 based on the coil selection signal S3 from the microcomputer 80. The MUX 62 receives the signal S1 generated by magnetic induction with the magnetic field generated from the LC oscillation circuit 41 of the electronic pen 2 in the selected sense coils X1 to Xm, Y1 to Yn, and the corresponding signal S11. Is output to the amplifier circuit 64. Note that the magnetic induction of the sense coils X1 to Xm and Y1 to Yn with the magnetic field generated from the LC oscillation circuit 41 of the electronic pen 2 substantially corresponds to reception of the magnetic field.

  The amplifier circuit 64 amplifies the signal S11 input from the MUX 62. The signal S13 amplified by the amplifier circuit 64 is input to the rectifier circuit 66. The rectifier circuit 66 amplitude-detects the signal S13 input from the amplifier circuit 64, smoothes it, and converts it into a DC signal. The signal S14 subjected to amplitude detection by the rectifier circuit 66 is input to the microcomputer 80. As described above, the microcomputer 80 has an A / D conversion function, and converts the input signal S14 after amplitude detection into a digital signal. At this time, a position coordinate table (not shown) is stored in the ROM 80b of the microcomputer 80. The microcomputer 80 applies a position coordinate table to the digital signal to thereby obtain coordinate data of a contact point between the electronic pen 2 and the notebook 30 (hereinafter, simply referred to as “coordinate data of the electronic pen 2” as appropriate), that is, The x coordinate in the x axis direction and the y coordinate in the y axis direction are calculated. The calculated coordinate data is stored in the flash memory 72.

  In the flash memory 72, an electronic file is prepared in advance, and stroke data based on a pen position data sequence including a plurality of coordinate data calculated by the microcomputer 80 is written in the electronic file, and is added to a page number described later. Correspondingly saved.

  The communication interface 73 is an interface for providing stroke data based on a later-described pen position data sequence including a plurality of coordinate data stored in the flash memory 72 to an external device such as a personal computer PC as illustrated. . Specifically, the communication interface 73 is, for example, a USB interface for Universal Serial Bus (USB) connection, a memory card slot such as an SD card, or a wireless or wired network interface.

  The display unit 74 is configured by, for example, liquid crystal (Liquid Crystal Display, LCD). The display unit 74 displays predetermined information related to the operation state of the coordinate detection device 3 such as the remaining amount of the battery 21.

  A page “advance” key 77 and a page “return” key 78 are keys for the operator to instruct page switching of the electronic file, that is, page advance or page return.

  The battery 21 supplies power to the microcomputer 80 and the like when a power switch (not shown) provided in the coordinate detection device 3 is turned on.

  As shown in FIG. 4, the turning detection unit 76 includes a base 91, a pedestal 92, an urging spring 93, an arm 76 a, a roller 94, and a rotary encoder 95. A pedestal portion is fixed upright at one end of the base portion 91, and one end of the arm 76a is pivotally supported at the upper end of the pedestal portion 92 so as to be swingable. The arm 76 a is urged by a urging spring 93 in a direction to rotate toward the base portion 91. A roller 94 is rotatably provided inside the free end of the arm 76a. The lower side surface of the roller 94 is exposed from the lower surface of the arm 76 a and faces the upper surface of the base portion 91. A rotary encoder 95 is provided on the rotating shaft of the roller 94. The rotary encoder 95 includes, for example, a double slit that is coaxial and has a period shifted by ¼ (not shown in particular), so that the rotation direction of the roller 94 can be detected.

  The turning detection unit 76 having such a configuration is provided in the coordinate detection device 3 as shown in FIG. At this time, the base portion 91 is fixed so as to extend over the control circuit portion case 25 and the left seat portion 10L. Accordingly, a plurality of sheets positioned on the left writing surface 31 </ b> L of the notebook 30 are sandwiched between the lower side surface of the roller 94 and the upper surface of the base portion 91. As described above, when performing a turning operation for advancing the page, the operator inserts a sheet between the roller 94 and the base portion 91, whereby the roller 94 rotates in the clockwise direction in the drawing. To do. When the page turning operation is performed, the operator pulls out the sheet from between the roller 94 and the base portion 91, whereby the roller 94 rotates counterclockwise in the drawing. In this way, the turning detection unit 76 can detect the page turning direction in the notebook 30. Further, the turning detection unit 76 can detect whether the number of turned pages is one or more.

(A) Method principle of this embodiment (A-1) Determination of latest page accompanying page turning operation and additional writing The feature of the present embodiment having the above-described configuration is the processing content when additional writing is performed by the operator. In other words, the operator returns the page from the latest page of the notebook 30 at his / her will and makes additional writing with the electronic pen 2, and stroke data corresponding to the additional writing (hereinafter referred to as “first stroke data” as appropriate). Is input later. After that, the operator advances the page and performs writing with the electronic pen 2 again, and stroke data corresponding to the writing (hereinafter referred to as “second stroke data” or “third stroke data” as appropriate, details will be described later). input. At this time, in the present embodiment, it is determined whether or not the second stroke data or the third stroke data is performed at the page position of the original latest page. In the present embodiment, every time the turning operation in the advance direction is performed, the names of the stroke data are switched in the order of the first stroke data, the second stroke data, and the third stroke data.

  First, page numbers equivalent to the actual description pages when the operator sequentially describes the notes 30 are sequentially given to the stroke data corresponding to the descriptions. As described above, when the operator sequentially describes the latest pages in the notebook 30 (hereinafter, such a description is referred to as “latest writing”), the operator performs his / her own note. In some cases, 30 pages are turned back from the latest page in the backward direction, and additional writing is performed retroactively to the past pages (hereinafter, such additional writing is referred to as “additional writing”). When the additional writing is completed, the operator returns the page of the notebook 30 in the advance direction, and returns the notebook 30 to the original page, that is, the latest page. However, when performing additional writing over a plurality of pages, the operator returns the page in the advance direction, finishes the additional writing sequentially for all of the plurality of pages that are the target of additional writing, and then writes the notes. 30 is returned to the latest page. Note that the latest written stroke data corresponds to the original stroke data described in each claim.

  Here, in order to assign and manage the page numbers corresponding to the stroke data of the latest writing and additional writing, respectively, the page numbers where the latest writing and additional writing are actually performed are the coordinate detection devices. 3 need to be recognized by the microcomputer 80. In order for the microcomputer 80 of the coordinate detection device 3 to accurately recognize the page number, the operator usually turns the “return” key 77 or “advance” corresponding to the turning direction each time a sheet of the note 30 is turned. A key 78 is pressed to input page switching.

  For example, as shown in FIG. 5, in the state where the fourth page is the latest page (the state shown on the right side in the figure), when the additional writing is performed on the first page, the operator writes the left writing surface 31L. Each time a sheet located at is turned rightward or turned back, the “return” key 78 is pressed once and this is repeated twice. In FIG. 5, the turning operation in the returning direction is simply abbreviated as “returning” (the same applies to the following drawings). Then, when the operator performs additional writing on the first page located on the right writing surface 31R (shaded portion in the figure), the corresponding first stroke data is input to the microcomputer 80 of the coordinate detection device 3. At this time, as a result of the “return” key 78 being pressed twice from the fourth page, which is the latest page, and the additional writing is performed on the right writing surface 31R, the microcomputer 80 of the coordinate detection device 3 corresponds to the additional writing. It can be clearly recognized that the first stroke data is input corresponding to the first page of the note 30. Thereafter, each time a sheet positioned on the right writing surface 31R is turned to the right and turned in the advance direction, the operator presses the “advance” key 77 once and repeats this twice. Thus, the microcomputer 80 of the coordinate detection device 3 can recognize that the fourth page, which is the latest page, is open. In FIG. 5, the turning operation in the advance direction is simply abbreviated as “advance turning” (the same applies to the following drawings).

  However, the pressing operation of the “return” key 78 and the “advance” key 77 as described above is very troublesome, and the operator needs to press each key 77 in the case of writing back to the past page quickly. , 78 is often forgotten.

  Therefore, in the present embodiment, as described above, the turning detection unit 76 that can automatically detect the turning operation is provided. However, even in the page turning detection unit 76, the page turning operation unit 76 performs the page turning operation depending on the mode of the page turning operation, for example, when the operator turns a plurality of sheets of the notebook 30 at the same time, or turns the page 30 quickly. It may not be detected accurately.

  For example, as shown in FIG. 6, from the state in which the 10th page is the latest page (the state in the upper right in the figure), the operator repeats the turning operation in the return direction and adds the first stroke data to the 5th page. There is a case where the second stroke data is written on the left writing surface 31L after writing and then repeating the turning operation in the advance direction. In such a case, the microcomputer 80 of the coordinate detection device 3 determines whether the page on which the second stroke data is described is the middle page of the sixth page or the eighth page or the tenth page of the latest page. It cannot be recognized correctly. As described above, the intermediate page is a page between the page on which additional writing has been performed and the latest page (hereinafter the same). This is partly due to the low accuracy of detecting the number of sheets to be turned even if the turning direction can be accurately detected due to the configuration of the turning detection unit 76. In other words, whether the operator's additional writing to the note 30 is currently completed and the original latest page is restored, or whether the operator's additional writing to the note 30 is still being performed on the intermediate page, May not be accurately recognized by the microcomputer 80 of the coordinate detection device 3.

  However, when managing stroke data in units of pages, at least add the stroke data input after turning in the advance direction to the latest page or intermediate page, in other words, whether it is the latest write It is necessary to determine whether it is a write. Hereinafter, a method for determining the latest page executed by the microcomputer 80 of the coordinate detection device 3 of the present embodiment in accordance with the page turning operation and the additional writing will be described in order.

  First, as a premise for executing the method of the present embodiment, the latest writing on the note 30 by the operator is always performed according to the following two principles. That is, as a first principle, writing is always performed in a page-first manner on each page. That is, in a writing area of one page, writing is not performed in a subsequent area while leaving a blank in a writing start area at the top of each page or a writing middle area other than the top and bottom of each page. Moreover, it is not written several times, overlapping with the same writing area of one page. Next, as a second principle, even when viewed in page units, writing is always performed in a first-order manner. In other words, it will not be written on a subsequent page while leaving a completely blank page.

(A-2) Latest page nonconformity condition First, the latest page nonconformity condition when stroke data is input with the electronic pen 2 will be described. When the page to which the stroke data is input satisfies the nonconforming condition of the latest page, it is determined that the page is not the latest page. This is also a conforming condition for the intermediate page.

(A-2-1) In the case of contrary to the first principle In the writing mode according to the first principle described above, after writing is made on the left writing surface 31L, the writing proceeds to the right writing surface 31R, and writing on the right writing surface 31R is performed. When finished, the page turns and the writing is performed again on the left writing surface 31L. Therefore, when additional writing is performed in a state where the latest written stroke data is completed in the middle of the left writing surface 31L, the second stroke data is an intermediate region of the left writing surface 31L when the additional writing is completed. Or from the writing start area of the right writing surface 31R corresponding to the next page of the left writing surface 31L. Alternatively, when the additional writing is performed in a state where the latest writing stroke data is completed in the middle of the right writing surface 31R, the second stroke data is an intermediate region of the right writing surface 31R when the additional writing is completely completed. Or from the writing start area of the left writing surface 31L corresponding to the next page of the right writing surface 31R. Therefore, there should be a close relationship between the position of the end point of the latest written stroke data and the position of the start point of the second stroke data.

  Therefore, in the present embodiment, if at least the above does not apply, for example, as shown in FIGS. 7 and 8, the second stroke data is not the continuation of the latest written stroke data. It is considered that the page number to be associated with the data is not the latest page number, that is, the write-once is not completely completed. That is, in such cases, the latest page is incompatible with the first principle. A page determined to have the second stroke data input so as to satisfy this nonconformity condition is determined as an intermediate page.

(A-2-2) Contrary to the second principle (1)
As described above, when the additional writing is performed in a state where the latest writing stroke data is completed in the middle of the right writing surface 31R, when the additional writing is completely completed, the second stroke data is stored in the right writing surface. It should start from the middle region of 31R or from the writing start region of the left writing surface 31L corresponding to the next page of the right writing surface 31R. When returning to the middle area of the right writing surface 31R, which is the former, if writing to the right writing surface 31R is finished immediately, before starting from the left writing surface 31L of the next page, Page turning is performed. Since the number of page turning pages at this time is one page, when the number of page turning pages is a plurality of pages, it is not a mode of return upon completion of additional writing as described above.

  Therefore, in this embodiment, paying attention to this point, whether or not the page number corresponding to the second stroke data is the latest page number depends on whether or not the number of page turnings in the advance direction is a plurality of pages. Determined. For example, as shown in FIG. 9, when the number of page turning executed after at least generation of the second stroke data is a plurality of pages, the page number to be associated with the second stroke data is the latest page number. Not considered to be. That is, in such a case, the latest page is incompatible with the second principle. A page determined to have the second stroke data input so as to satisfy this nonconformity condition is determined as an intermediate page.

(A-2-3) Cases against the second principle (2)
As described above, when the second stroke data generated after the page turning operation in the page advance direction is started from the left writing surface 31L, the writing proceeds and the right writing surface 31R corresponding to the next page is displayed. If the writing proceeds further, the operator performs a page turning operation, and further moves to the left writing surface 31L corresponding to the next page. In this case, at least the end point of the second stroke data should be located on the right writing surface 31R, and the start point of the third stroke data should be located on the left writing surface 31L. Alternatively, when the second stroke data generated after the page turning operation in the page advance direction is started from the right writing surface 31R, the page turning operation is performed by the operator when writing proceeds, and the next page is supported. Move to the left writing surface 31L. When the writing further proceeds, the right writing surface 31R corresponding to the next page further moves. In this case, at least the end point of the second stroke data should be located on the right writing surface 31R, and the start point of the third stroke data generated after the turning operation should be located on the left writing surface 31L.

  Therefore, in the present embodiment, paying attention to this point, the start point and end point of the second stroke data are compared with the start point of the third stroke data, and the page of the second stroke data is used by using the comparison result. It is determined whether or not the number is the latest page number. For example, as shown in FIG. 10, when the start point and end point of the second stroke data are on the left writing surface 31L and the start point of the third stroke data is also on the left writing surface 31L, the second stroke data The page number to be associated with is regarded as not the latest page number. In addition, as shown in FIG. 11, even when the start point and end point of the second stroke data are on the right writing surface 31R and the start point of the third stroke data is also on the right writing surface 31R, The page number to be associated is considered not the latest page number. That is, it is regarded that the additional writing is not completely completed. That is, in these cases, the latest page is incompatible with the second principle. A page determined to have the second stroke data input so as to satisfy this nonconformity condition is determined as an intermediate page.

(A-3) Latest page adaptation condition Next, the latest page adaptation condition when stroke data is input will be described. When the page in which the stroke data is input satisfies the conforming condition of the latest page, it is determined that the page is surely the latest page.

(A-3-1) When the second stroke data input during the turning operation performed twice in the advance direction starts from the respective writing start areas of the left writing surface and the right writing surface, as described above. When the additional writing is performed in a state where the latest writing stroke data is completed in the middle of the right writing surface 31R, the second stroke data generated after turning the page in the feed direction at the end of the additional writing is the right writing. There is a case where the writing starts on the left writing surface 31L corresponding to the next page of the surface 31R. If the second stroke data starting from the writing start area of the left writing surface 31L continues further, the right writing surface 31R corresponding to the next page moves. When writing on the right writing surface 31R is completed, the operator turns the page in the feed direction.

  Therefore, in this embodiment, paying attention to this point, the page number of the second stroke data is set to the latest page number based on the writing area of the second stroke data generated during the page turning in the two advance directions. It is determined whether or not. For example, as shown in the A route in FIG. 12, the start point of the second stroke data generated during the page turning operation executed twice is the writing start area of the left writing surface 31L, and the right writing surface 31R. If the starting point is also the writing start area, the page number to be associated with the second stroke data is regarded as the latest page number. That is, it is considered that the latest writing has been completed. That is, in such a case, the latest page conformity condition is set. When it is determined that the second stroke data is input so as to satisfy the conformance condition, the page of the right writing surface 31R to which the second stroke data is input is determined as the current latest page.

(A-3-2) When the start point of the third stroke data is the writing start area of the left writing surface As described above, the latest writing stroke data is written in the state of being completed in the middle of the left writing surface 31L. When the additional writing is completed, the second stroke data may be started from the middle of the left writing surface 31L after turning the page in the feed direction at the end of the additional writing. At that time, after further writing and moving to the right writing surface 31R corresponding to the next page, there is a page turning operation by the operator, and then the third stroke data from the left writing surface 31L corresponding to the next page. May be started. The second stroke data may be started from the writing start area of the right writing surface 31R. Alternatively, as described above, when additional writing is performed in a state where the latest writing stroke data is completed in the middle of the right writing surface 31R, the second stroke data is added after the page is turned in the feed direction at the end of additional writing. It may start from the middle of the right writing surface 31R. At that time, writing further proceeds, there is a page turning operation by the operator, and the third stroke data may be started from the left writing surface 31L corresponding to the next page. In both cases, the third stroke data starts from the writing start area of the left writing surface 31L.

  Therefore, in this embodiment, paying attention to this point, whether the page number of the second stroke data is the latest page number based on the writing area of the third stroke data generated after the page turning in the advance direction. It is determined whether or not. For example, when the start point of the third stroke data generated after the page turning operation is the writing start area of the left writing surface 31L as shown in the B route of FIG. 12 and FIG. The page number to be associated with the end point of the stroke data is regarded as the latest page number. That is, it is considered that the additional writing has been completely completed. That is, in such a case, it becomes the conformity condition of the latest page. When it is determined that the third stroke data is input so as to satisfy this conformance condition, the page at the end point of the third stroke data is determined as the current latest page.

(B) Flowchart that realizes the technique principle of the present embodiment In order to realize the technique principle as described above, the control contents of the processing executed by the CPU 80a of the microcomputer 80 of the coordinate detection device 3 are shown in FIGS. Will be described. In addition, this flow is started by turning on the power of the coordinate detection device 3 in a state where the latest page is opened.

  In FIG. 14, first, in step SS5, the CPU 80a determines whether or not the turning detection unit 76 has detected a turning operation in the return direction. If a turning operation in the return direction is detected, the determination is satisfied, and the routine goes to Step SS30 in FIG. On the other hand, when the turning operation in the return direction is not detected, the determination at Step SS5 is not satisfied, and the routine goes to Step SS10.

  In Step SS10, the CPU 80a starts a scan process for the sense coil unit 110 provided in the coil sheets 100L and 100R. While the scan process of the sense coil unit 110 is being executed, a coil selection signal S3 for sequentially selecting the sense coils X1 to Xm and the sense coils Y1 to Yn is output to the MUX 62. Thus, the signal S1 (see FIG. 2) is generated by magnetic induction between the magnetic field generated from the LC oscillation circuit 41 with the tip switch 42 of the electronic pen 2 turned on and any of the sense coils X1 to Xm, Y1 to Yn. Is generated. As described above, the signal S1 from the sense coils X1 to Xm and Y1 to Yn selected by the MUX 62 in a state where the signal S1 is generated is input to the MUX 62. The MUX 62 outputs a signal S11 (see FIG. 2) corresponding to the input signal S1 to the amplifier circuit 64. The signal S11 is amplified by the amplifier circuit 64, the amplified signal S12 (see FIG. 2) is rectified by the rectifier circuit 66, and the rectified signal 14 is input to the microcomputer 80. The CPU 80a of the microcomputer 80 calculates the coordinate data (x, y) of the electronic pen 2 by a known appropriate method based on the coil scan result, that is, the reception result of the magnetic field in the sense coils X1 to Xm and Y1 to Yn. Obtain or calculate. In the present embodiment, the calculation of the coordinate data is performed using a position coordinate table stored in the ROM 80b of the microcomputer 80. The CPU 80a calculates a plurality of the coordinate data, and generates stroke data corresponding to the writing on the writing surfaces 31L and 31R of the notebook 30 by the electronic pen 2 based on the calculated coordinate data.

  Thereafter, the process moves to step SS15, and the CPU 80a determines whether or not the stroke data generated in step SS10 has reached a predetermined amount or more. If the stroke data of a certain amount or more has not been generated yet, the determination is not satisfied and the routine returns to step SS5 and the same procedure is repeated. On the other hand, when stroke data is generated so that it is recognized that the operator has intentionally written on the note 30, the determination in step SS15 is satisfied, and the process proceeds to step SS20.

  In step SS20, the CPU 80a calculates a writing area on the writing surface to which the stroke data generated in step SS10 is input. In other words, the CPU 80a calculates the start point and end point of the stroke data and calculates the area between them. Then, the CPU 80a assigns a page number corresponding to the confirmed page determined by the above-described method to the stroke data and the data of the writing area, and stores the page number in the flash memory 72. Note that at the time of executing step SS20, it is already determined whether the page to which the stroke data is input is the latest page or the intermediate page. For example, immediately after the power is turned on or when the process proceeds from step SS165 or step SS235 described later to step SS5, the page to which the stroke data is input is determined to be the latest page. If the process has shifted from step SS85 (described later) to step SS5, the page on which the stroke data has been input is the intermediate page designated by the “advance” key 77 or the “return” key 78 so far. It has been confirmed.

  Thereafter, the process proceeds to step SS25, and the CPU 80a determines whether or not an operation for instructing to end this flow is input via an appropriate operation unit. If the end operation has not been input, the determination is not satisfied and the process returns to step SS5 and the same procedure is repeated. If an end operation has been input, the determination at step SS25 is satisfied, and this flow is ended.

  On the other hand, in FIG. 15, in step SS30, the CPU 80a stores the position coordinates (A) of the end point of the latest written stroke data immediately before the turning operation in the return direction is detected in step SS5 in the RAM 80c.

  Thereafter, in step SS35, the CPU 80a determines whether or not the “return” key 78 is pressed. If the “return” key 78 is pressed, the determination is satisfied, and the routine goes to Step SS40.

  In step SS40, the CPU 80a sets the data on the electronic file to the page spread state designated by the number of times the “return” key 78 is pressed determined in step SS35, and proceeds to step SS60 described later.

  On the other hand, if the “return” key 78 is not pressed in the determination at step SS35, the determination is not satisfied and the routine goes to step SS45.

  In step SS45, the CPU 80a performs a coil scan by the same control as in step SS10. Note that the stroke data generated by the coil scan in step SS45 corresponds to the first stroke data.

  Thereafter, the process proceeds to step SS50, and the CPU 80a determines whether or not the first stroke data generated in step SS45 has reached a certain amount or more as described above. If stroke data of a certain amount or more has not been generated, the determination is not satisfied, and the procedure returns to step SS35 and the same procedure is repeated. On the other hand, if the generated stroke data has reached a certain amount or more, the determination at step SS50 is satisfied, and the routine goes to step SS55.

  In step SS55, the CPU 80a calculates a writing area on the writing surface to which the stroke data generated in step SS45 is input. In other words, the CPU 80a calculates the start point and end point of the stroke data and calculates the area between them. Then, the CPU 80a assigns the page number of the temporary page for additional writing to the first stroke data and the data in the writing area, and stores it in the flash memory 72 as additional data. Note that the page number of the temporary page is set in advance by appropriate numbering and stored in an appropriate location.

  Thereafter, the process proceeds to step SS60, and the CPU 80a determines whether or not the turning detection unit 76 has detected a turning operation in the advancing direction. If a turning operation in the advancing direction is detected, the determination is satisfied, and the routine goes to Step SS80 shown in FIG. On the other hand, when the turning operation in the advance direction is not detected, the determination at Step SS60 is not satisfied, and the routine goes to Step SS65.

  In step SS65, the CPU 80a performs a coil scan by the same control as in step SS10.

  Thereafter, the process proceeds to step SS70, and the CPU 80a determines whether or not the stroke data generated in step SS65 reaches a certain amount or more as described above. If stroke data of a certain amount or more has not been generated, the determination is not satisfied and the process returns to step SS60 and the same procedure is repeated. On the other hand, if the generated stroke data has reached a certain amount or more, the determination at step SS70 is satisfied, and the routine goes to step SS75.

  In step SS75, the CPU 80a calculates a writing area on the writing surface to which the stroke data generated in step SS65 is input. In other words, the CPU 80a calculates a start point and an end point of the stroke data and calculates a region between them. Then, the CPU 80a assigns a page number of a temporary page for additional writing to the stroke data and the data in the writing area, and stores the stroke data in the flash memory 72. Then, it returns to step SS60 and repeats the same procedure.

  On the other hand, in FIG. 16, in step SS80, the CPU 80a determines whether or not the “advance” key 77 is pressed. If the “advance” key 78 is pressed, the determination is satisfied, and the routine goes to Step SS85.

  In step SS85, the CPU 80a sets the data on the electronic file to the page spread state designated by the number of times of the “advance” key 77 determined in step SS80, and proceeds to step SS5.

  On the other hand, if it is determined in step SS80 that the “advance” key 77 is not pressed, the determination is not satisfied, and the process proceeds to step SS90.

  In step SS90, the CPU 80a performs a coil scan by the same control as in step SS10. Note that the stroke data generated by the coil scan in step SS90 corresponds to the second stroke data.

  Thereafter, the process proceeds to step SS95, and the CPU 80a determines whether or not the second stroke data generated in step SS90 has reached a certain amount or more as described above. If stroke data of a certain amount or more has not been generated, the determination is not satisfied, and the process returns to step SS80 and the same procedure is repeated. On the other hand, if the generated stroke data has reached a certain amount or more, the determination is satisfied, and the routine goes to Step SS100.

  In step SS100, the CPU 80a calculates a writing area on the writing surface to which the second stroke data generated in step SS90 is input. In other words, the CPU 80a calculates the start point and end point of the second stroke data and calculates the area between them. Then, similarly to the above, the page number of the temporary page for additional writing is assigned to the stroke data and the writing area data, and the stroke data is stored in the flash memory 72.

  Thereafter, the process proceeds to step SS105, and the CPU 80a stores the additional writing immediately after the turning operation in the advance direction is detected in step SS60, that is, the position coordinate (B) of the start point of the second stroke data in the RAM 80c.

  Thereafter, the process proceeds to step SS110, and the CPU 80a compares the position coordinates (A) saved in step SS30 with the position coordinates (B) saved in step SS105.

  Thereafter, the process proceeds to step SS115, and the CPU 80a determines whether or not the latest page nonconformity condition is satisfied based on the comparison in step SS110. Specifically, the CPU 80a satisfies the condition described in (A-2-1) above because the position coordinate (B) is located in the middle region of the writing surface on the opposite side of the position coordinate (A). It is determined whether it is satisfied, in other words, whether it is against the first principle described above. If the condition (A-2-1) is satisfied, the determination is satisfied, and the routine goes to Step SS120.

  In Step SS120, the CPU 80a determines that the page to which the second stroke data generated in Step SS90 is input is the intermediate page, and moves to Step SS60 described above.

  On the other hand, in the determination at Step SS115, when the condition (A-2-1) is not satisfied, the determination is not satisfied, and the routine goes to Step SS125.

  In step SS125, the CPU 80a determines whether or not the turning detection unit 76 has detected a turning operation in the advancing direction. If a turning operation in the advance direction is detected, the determination is satisfied, and the routine goes to Step SS145 shown in FIG. On the other hand, when the turning operation in the advance direction is not detected, the determination at Step SS125 is not satisfied, and the routine goes to Step SS130.

  In step SS130, the CPU 80a performs a coil scan by the same control as in step SS10. The stroke data generated by the coil scan in step SS130 corresponds to the second stroke data.

  Thereafter, the process moves to step SS135, and the CPU 80a determines whether or not the second stroke data generated in step SS130 reaches a certain amount or more as described above. If more than a certain amount of stroke data has not been generated, the determination is not satisfied, and the process returns to step SS125 and the same procedure is repeated. On the other hand, if the generated stroke data has reached a certain amount or more, the determination at step SS135 is satisfied, and the routine goes to step SS140.

  In step SS140, the CPU 80a calculates a writing area on the writing surface to which the second stroke data generated in step SS130 is input. In other words, the CPU 80a calculates the start point and end point of the second stroke data, and calculates the area between them. Then, the CPU 80a assigns the page number of the temporary page for additional writing to the stroke data and the data in the writing area, and stores it in the flash memory 72. Then, it returns to step SS125 and repeats the same procedure.

  On the other hand, in FIG. 17, in step SS145, the CPU 80a determines whether or not the turning operation in the advance direction detected in step SS125 is a turning operation of a plurality of sheets. That is, depending on whether or not a plurality of sheet turning operations are detected at the timing of step SS125, the CPU 80a follows the second principle described in (A-2-2) in step SS145. Judge whether it is contrary. If a plurality of turning operations in the advance direction are performed and the condition (A-2-2) is satisfied, the determination in step SS145 is satisfied, and the flow proceeds to step SS150.

  In Step SS150, the CPU 80a determines that the page to which the stroke data generated in Step SS130 is input is the intermediate page, and moves to Step SS60 described above.

  On the other hand, if it is determined in step SS145 that the turning operation in the advance direction is a single sheet turning operation, the determination is not satisfied and the process proceeds to step SS155.

  In step SS155, the CPU 80a receives the second input from the time when the turning operation in the previous advancing direction is detected to the time when the turning operation in the advancing direction in the previous step SS125 is detected. Validate the stroke data.

  Thereafter, the process moves to step SS160, and the CPU 80a determines whether or not the conformity condition of the latest page is satisfied based on the verification in step SS155. Specifically, the CPU 80a writes the start point on the right writing surface 31R as the starting point of the second stroke data generated during the page turning operation executed twice is the writing start region of the left writing surface 31L. It is a start area, and it is determined whether or not the condition (A-3-1) is satisfied. If the condition (A-3-1) is satisfied, the determination is satisfied, and the routine goes to Step SS165.

  In Step SS165, the CPU 80a determines that the right writing surface 31R to which the second stroke data generated in Step SS90 and Step SS130 is input is the current latest page, and proceeds to Step SS5 described above.

  On the other hand, in the determination at Step SS160, when the condition (A-3-1) is not satisfied, the determination is not satisfied, and the routine goes to Step SS170.

  In step SS170, the CPU 80a performs a coil scan by the same control as in step SS10. Note that the stroke data generated by the coil scan in step SS170 corresponds to the third stroke data.

  Thereafter, the process moves to step SS175, and the CPU 80a determines whether or not the third stroke data generated in step SS170 reaches a certain amount or more as described above. If more than a certain amount of stroke data has not been generated, the determination is not satisfied and the routine returns to step SS170 and the same procedure is repeated. On the other hand, if the generated stroke data has reached a certain amount or more, the determination at step SS175 is satisfied, and the routine goes to step SS180.

  In step SS180, the CPU 80a calculates a writing area on the writing surface to which the third stroke data generated in step SS170 is input. In other words, the CPU 80a calculates the start point and end point of the third stroke data, and calculates the area between them. Then, the CPU 80a assigns the page number of the temporary page for additional writing to the stroke data and the data in the writing area, and stores it in the flash memory 72.

  Thereafter, the process moves to step SS185, and the CPU 80a stores the additional writing immediately after the turning operation in the advance direction is detected in step SS125, that is, the position coordinate (C) of the start point of the third stroke data in the RAM 80c.

  Thereafter, the process proceeds to step SS190, and the CPU 80a compares the position coordinates (B) saved in step SS105 with the position coordinates (C) saved in step SS185.

  Thereafter, the process proceeds to step SS195, and the CPU 80a determines whether or not the latest page nonconformity condition is satisfied based on the comparison in step SS190. Specifically, the CPU 80a determines whether the start point and end point of the second stroke data are on the left writing surface 31L and the start point of the third stroke data is also on the left writing surface 31L, or the start point of the second stroke data. In addition, since the end point is on the right writing surface 31R and the start point of the third stroke data is also on the right writing surface 31R, it is determined whether or not the condition described in (A-2-3) is satisfied. In other words, the CPU 80a determines whether or not the second principle is violated. If the condition (A-2-3) is satisfied, the determination is satisfied, and the routine goes to Step SS200.

  In Step SS200, the CPU 80a determines that the page to which the second and third stroke data generated in Step SS170 is input is the intermediate page, and moves to Step SS60 described above.

  On the other hand, in the determination at Step SS195, when the condition (A-3-1) is not satisfied, the determination is not satisfied, and the routine goes to Step SS205 shown in FIG.

  In step SS205, the CPU 80a determines whether or not the turning detection unit 76 has detected a turning operation in the advance direction. If a turning operation in the advance direction is detected, the determination is satisfied, and the routine goes to Step SS225. On the other hand, when the turning operation in the advancing direction is not detected, the determination at Step SS205 is not satisfied, and the routine goes to Step SS210.

  In step SS210, the CPU 80a performs a coil scan by the same control as in step SS10. The stroke data generated by the coil scan in step SS130 corresponds to third stroke data.

  Thereafter, the process moves to step SS215, and the CPU 80a determines whether or not the third stroke data generated in step SS210 reaches a certain amount or more as described above. If stroke data of a certain amount or more has not been generated, the determination is not satisfied, and the process returns to step SS205 and the same procedure is repeated. On the other hand, if the generated stroke data has reached a certain amount or more, the determination at step SS215 is satisfied, and the routine goes to step SS220.

  In step SS220, the CPU 80a calculates a writing area on the writing surface to which the third stroke data generated in step SS210 is input. In other words, the CPU 80a calculates the start point and end point of the third stroke data, and calculates the area between them. Then, the CPU 80a assigns the page number of the temporary page for additional writing to the stroke data and the data in the writing area, and stores it in the flash memory 72. Then, it returns to step SS205 and repeats the same procedure.

  On the other hand, in step SS225, the CPU 80a is input after the turning operation in the preceding advance direction is detected until the turning operation in the immediately preceding step SS205 is detected. The third stroke data is verified. When the stroke data corresponds to the fourth and subsequent stroke data as a result of repeating the turning operation in the advance direction, the CPU 80a executes the corresponding replacement.

  Thereafter, the process proceeds to step SS230, and the CPU 80a determines whether or not the latest page matching condition is satisfied based on the verification in step SS225. Specifically, the CPU 80a determines that the start point of the third and subsequent stroke data generated after the page turning operation is the writing start area of the left writing surface 31L, and satisfies the above condition (A-3-2). It is determined whether or not. If the condition (A-3-2) is satisfied, the determination is satisfied, and the routine goes to Step SS235.

  In Step SS235, the CPU 80a determines that the writing surface to which the end point of the third and subsequent stroke data generated in Step SS170 and Step SS210 is input is the current latest page. Thereafter, the process proceeds to step SS5.

  On the other hand, in the determination at Step SS230, when the condition (A-3-2) is not satisfied, the determination is not satisfied, and the routine goes to Step SS170.

  In the above, Step SS10, Step SS45, Step SS65, Step SS90, Step SS130, Step SS170, and Step SS210 in the flow of FIG. 14 to FIG. 18 function as the position acquisition unit and the stroke data generation unit described in each claim. To do.

  Moreover, the process which calculates the writing area | region respectively performed by step SS20, step SS55, step SS75, step SS100, step SS140, step SS180, and step SS220 functions as a writing area | region detection means of each claim. In addition, the process of assigning page numbers to be executed in step SS20, step SS55, step SS75, step SS100, step SS140, step SS180, and step SS220 functions as a page assigning unit and is stored in the flash memory 72. Functions as storage control means.

  Furthermore, step SS115 functions as a first determination unit described in each claim, step SS145 functions as a second determination unit described in each claim, and step SS160 functions as a third determination unit described in each claim. The procedure of step SS195 functions as a fourth determination unit described in each claim, and the procedure of step SS230 functions as a fifth determination unit described in each claim. And these step SS115, step SS145, step SS160, step SS195, and step SS230, and the above-mentioned step SS20, step SS55, step SS75, step SS100, step SS140, step SS180, and step SS220 are claimed in each claim. It functions as the described return determination means.

  As described above, in the handwriting input device 1 of the present embodiment, after the turning operation in the return direction is detected, the first stroke data is generated, and when the turning operation in the advance direction is detected, The determination of the conforming condition and the nonconforming condition of the latest page is repeated (see Step SS115, Step SS145, Step SS160, Step SS195, Step SS230). From these, it is determined whether or not the page has returned to the latest page. In step SS55, step SS75, step SS100, step SS140, step SS180, and step SS220, the first stroke data and the like are stored in the flash memory 72 as additional write data in association with a separately added temporary page number for additional write. Is done. Thereby, even if it is in a state where an accurate page number is not given to the first stroke data or the like, it can be stored in association with an appropriate temporary page number for additional writing.

  In the present embodiment, in particular, in step SS115, the position coordinate (A) of the end point of the latest written stroke data is compared with the position coordinate (B) of the start point of the second stroke data. In other words, it is compared whether the second stroke data is a continuation of the latest written stroke data. As a result, it is determined whether or not the page number of the second stroke data is the latest page number of the latest written stroke data. Therefore, when it is determined that the page number is the latest page number, the second stroke data is stored in association with the latest page number. As a result, when all the additional writing by the operator is completed at that time, and the latest writing in the normal writing order is restored, the latest page number corresponding to the above restoration is assigned to the subsequent stroke data. The As a result, the handwriting input device 1 according to the present embodiment returns to the original latest page after the additional writing by the operator is completed even when the page turning detection unit 76 cannot accurately detect the page turning operation. It is possible to accurately recognize that it is in the state.

  In the present embodiment, in particular, when the second stroke data is not a continuation of the latest written stroke data, the page number to be associated with the second stroke data is not the latest page number in step SS115. That is, it is regarded that the additional writing is not completely completed. As a result, the handwriting input device 1 can accurately recognize that the write-once by the operator has not been completed yet and has not returned to the original latest page.

  In this embodiment, in particular, in step SS145, when the number of page turning executed after at least generation of the second stroke data is a plurality of pages, the page number to be associated with the second stroke data is the latest. Not considered a page number. That is, it is regarded that the additional writing is not completely completed. As a result, the handwriting input device 1 can accurately recognize that the additional writing by the operator has not yet been completed and has not returned to the original latest page.

  In the present embodiment, in particular, the start point of the second stroke data generated during the page turning operation executed twice is the writing start area of the left writing surface 31L, and the starting point of the right writing surface 31R is also written. If it is the start area, in step SS160, the page number to be associated with the second stroke data is regarded as the latest page number. That is, it is considered that the additional writing has been completely completed. As a result, the handwriting input device 1 can accurately recognize that the additional writing by the operator has been completed and the state has returned to the original latest page.

  In the present embodiment, particularly, when the start point and end point of the second stroke data are on the left writing surface 31L and the start point of the third stroke data is also on the left writing surface 31L, If the start point and end point are on the right writing surface 31R and the start point of the third stroke data is also on the right writing surface 31R, the page number to be associated with the second stroke data is the latest page number in step SS195. It is considered not. That is, it is regarded that the additional writing is not completely completed. As a result, the handwriting input device 1 can accurately recognize that the additional writing by the operator has not been completed and the state has not returned to the original latest page.

  In the present embodiment, in particular, when the start point of the third stroke data generated after the page turning operation is the writing start area of the left writing surface 31L, the end point of the third stroke data is determined in step SS230. The page number to be associated with is regarded as the latest page number. That is, it is considered that the additional writing has been completely completed. As a result, the handwriting input device 1 can accurately recognize that the additional writing by the operator has been completed and the state has returned to the original latest page.

  In the above-described embodiment, the turning detection unit 76 detects the turning direction by the rotation of a roller that sandwiches the paper, but is not limited thereto. For example, like the turning detection unit 76A shown in FIG. 19 corresponding to FIG. 1C, an image sensor 96 is provided on the lower surface of the arm 76a, and the presence / absence and direction of the turning operation are detected from the movement of the paper. You may make it do.

  In addition, the matching conditions of the latest page are not limited to the above two (A-3-1) and (A-3-2), and may be another method. That is, for example, in step SS115, the page turning number by the page turning detection unit 76 when the page turning is performed in the page turning direction is compared with the decrease number of the page number designated by the “return” key 78. . When the page turning number and the page number decrease number coincide with each other, it is considered that the operator has simply forgotten the instruction to increase the page number by pressing the “advance” key 77, and the second stroke data Is associated with the latest page number. As a result, the handwriting input device 1 can accurately recognize that the additional writing by the operator has been completed and that the operator has surely returned to the original latest page.

  Further, in the flowcharts shown in FIGS. 14 to 18, it is assumed that the turning operation in the returning direction is performed only once after returning from the latest page and performing additional writing and returning to the latest page. However, the present invention is not limited to this. For example, although not shown in particular, when each step of step SS60, step SS125, and step SS205 for detecting turning in the advance direction is also detected for turning in the return direction, and a turning operation in the return direction is detected. As a result, the user always moves away from the latest page.

  In the above embodiment, the notebook 30 has a left-closed bookbinding configuration and the left writing surface 31L and the right writing surface 31R are opened in the left-right direction. However, the present invention is not limited to this. For example, although not particularly illustrated, a right-closed bookbinding configuration or a configuration that opens up and down may be used. Also in the writing mode, for example, vertical writing may be used. In these cases, the conforming condition and nonconforming condition of the latest page may be changed as appropriate according to the page configuration and writing mode.

  In addition, the substantially notebook-shaped writing object that advances and returns the page by the turning operation is not necessarily limited to the configuration including two writing surfaces. For example, although not specifically illustrated, the present invention may be applied to a writing object having a configuration in which only a page on the same one side in a spread state is used as a writing surface, such as a so-called report sheet bound. In this case, since the page on the back side of the page that has been turned forward is not a writing surface, the conforming condition and the nonconforming condition of the latest page may be appropriately changed in consideration of this point.

  In addition, in the above, the arrow shown in each figure of FIG. 2 etc. shows an example of the flow of a signal, and does not limit the flow direction of a signal.

  Further, the flowcharts shown in FIGS. 14 to 18 and the like do not limit the present invention to the procedures shown in the above-described flow, and the addition and deletion of the procedures, the change of the order, etc. within the scope not departing from the gist and technical idea of the invention. You may do.

  In addition to those already described above, the methods according to the above-described embodiments and modifications may be used in appropriate combination.

  In addition, although not illustrated one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.

1 Handwriting input device (electronic writing device)
2 Electronic pen (electronic writing instrument)
3 Coordinate detection device (electronic recording terminal)
30 notes (written cursive)
31L, R Writing surface (writing part, first writing part, second writing part)
41 LC oscillation circuit (signal generation means)
44 Magnetic Field Application Coil 76 Page Turning Detection Unit (Page Turning Detection Unit)
77 “advance” key (operation means)
78 “Return” key (operation means)
80a CPU
110 Sense coil (coil)

Claims (12)

A coil corresponding to the writing part of the substantially notebook-shaped writing body with a writing part;
A signal generation means having a coil for applying a magnetic field, and a result of reception at the coil of a position detection writing signal transmitted from an electronic writing instrument to input data corresponding to the writing content to the writing object Acquired based on, position acquisition means for acquiring the position information of the electronic writing instrument,
Using the position information acquired by the position acquisition means, stroke data generation means for generating stroke data corresponding to the description on the writing object by the electronic writing instrument;
Page giving means for giving a page number for identifying the page of the cursive body to the stroke data generated by the stroke data generating means;
Storage control means for storing the stroke data generated by the stroke data generation means in association with the page number assigned by a page giving means;
When the page of the cursive object is turned, a page turning detection means for detecting the curling operation of the cursive object in the page advance direction or the page return direction;
After the page turning detection means detects that the page is turned in the page return direction, the stroke data generation means generates first stroke data using the position information acquired by the position acquisition means. Further, when the page turning detection unit detects that the page is turned in the page advance direction, the page turning detection unit immediately before the page turning detection unit detects that the page is turned in the page return direction. Return determination means for determining whether or not the original page has been returned,
The storage control means
An electronic writing apparatus, wherein the first stroke data is stored as additional data in association with a temporary page number for additional writing that indicates that the page providing means is an additional page. The writing object includes a first writing part and a second writing part, and is configured to be openable and closable, and the coil includes a first coil corresponding to the first writing part of the writing object, and A second coil corresponding to the second writing part,
The return determination means includes
Writing area detecting means for detecting in which area included in the first writing part or the second writing part writing by the electronic writing instrument is performed using the position information acquired by the position acquiring means. When,
After the page turning detection means detects that the page is turned in the page return direction, the stroke data generation means generates first stroke data using the position information acquired by the position acquisition means. Further, after the page turning detection means detects that the page has been turned in the page advance direction, the stroke data generation means uses the position information acquired by the position acquisition means to generate second stroke data. If generated,
At least the position acquired by the position acquisition unit corresponding to the original page immediately before the page turning detection unit detects that the page has been turned in the page return direction detected by the writing area detection unit. Comparing the end point of the original stroke data generated by the stroke data generation means using the position information with the start point of the second stroke data, the page number to be associated with the second stroke data is First determining means for determining whether or not to use the original page number assigned by the page assigning means to the original stroke data;
Have
The storage control means
When the first determination means determines that the page number to be associated with the second stroke data is the original page number, the second stroke data is stored in association with the original page number. The electronic writing apparatus according to claim 1. The first determination means includes
The writing area detecting means allows the end point of the original stroke data to be an intermediate area of the first writing part and the starting point of the second stroke data to be an intermediate area of the second writing part, or When it is detected that the end point of the original stroke data is an intermediate area of the second writing section and the start point of the second stroke data is an intermediate area of the first writing section, the second stroke 3. The electronic writing apparatus according to claim 2, wherein it is determined that a page number to be associated with data is not the original page number. At least when the page number to be associated with the second stroke data is not determined to be the original page number by the first determination unit, and the position information acquired by the position acquisition unit is used. After the second stroke data is generated by the stroke data generation means, when the page turning detection means detects that the page is turned in the page advance direction, the page turning detection means detects the page advance direction. Whether the page number to be associated with the second stroke data is set to the original page number assigned by the page assigning unit to the original stroke data depending on whether the number of page turning detected is a plurality of pages. Having a second determination means for determining
The storage control means
When the second determination means determines that the page number to be associated with the second stroke data is the original page number, the second stroke data is stored in association with the original page number. The electronic writing device according to claim 2 or 3. The second determination means includes
When the number of page turning detected in the page advance direction by the page turning detection means is a plurality of pages, it is determined that the page number to be associated with the second stroke data is not the original page number. The electronic writing device according to claim 4. At least when the second determination means determines that the page number to be associated with the second stroke data is not the original page number, and the stroke data generation means generates the second stroke data, Further, when it is detected by the page turning detection means that the page is turned in the page advance direction, the detection result of the writing area detection means for the second stroke data generated until the page is turned is used. A third determination unit that determines whether the page number to be associated with the second stroke data is the original page number assigned by the page assigning unit to the original stroke data;
The storage control means
When the third determination means determines that the page number to be associated with the second stroke data is the original page number, the second stroke data is stored in association with the original page number. The electronic writing device according to claim 4 or 5. The third determination means includes
By the writing area detecting means, the start point of the second stroke data is the writing start area of the first writing part, and the starting point of the second stroke data in the second writing part is that of the second writing part. The electronic writing apparatus according to claim 6, wherein when it is detected that it is a writing start area, the page number to be associated with the second stroke data is determined to be the original page number. The second stroke data is generated by the stroke data generation unit when at least the page number to be associated with the second stroke data is not determined by the third determination unit as the original page number. Further, after the page turning detection means detects that the page is turned in the page advance direction, the stroke data generation means uses the position information acquired by the position acquisition means to obtain third stroke data. If generated,
By comparing the start point and end point of the second stroke data detected by the writing region detection means with the start point of the third stroke data, a page number to be associated with the second stroke data is determined. A fourth determination unit that determines whether or not to use the original page number assigned by the page assigning unit to the original stroke data;
The storage control means
When it is determined by the fourth determination means that the page number to be associated with the second stroke data is the original page number, the second stroke data is stored in association with the original page number. The electronic writing apparatus according to claim 6 or 7. The fourth determination means includes
According to the writing area detecting means, the start point and the end point of the second stroke data are in the first writing part and the start point of the third stroke data is in the first writing part, or the second When it is detected that the start point and end point of stroke data are in the second writing part and the start point of the third stroke data is in the second writing part, it should be associated with the second stroke data 9. The electronic writing apparatus according to claim 8, wherein a page number is determined not to be the original page number. At least when the page number to be associated with the second stroke data is not determined to be the original page number by the fourth determination unit, and the third stroke data is generated by the stroke data generation unit, Further, when it is detected by the page turning detection means that the page is turned in the page advance direction, the detection result of the writing area detection means for the third stroke data generated until the page is turned is used. And a fifth determination means for determining whether or not the page number to be associated with the second stroke data is the original page number assigned by the page assigning means to the original stroke data,
The storage control means
When the fifth determination means determines that the page number to be associated with the second stroke data is the original page number, the second stroke data is stored in association with the original page number. 10. The electronic writing apparatus according to claim 8, wherein the electronic writing apparatus is characterized in that: The fifth determination means includes
When the writing area detecting means detects that the start point of the third stroke data is the writing start area of the first writing unit, the page number to be associated with the end point of the third stroke data is The electronic writing apparatus according to claim 10, wherein it is determined that the original page number. Having an operation means capable of instructing increase / decrease of the page number to be given by the page giving means;
The first determination means includes
After the page turning detection means detects that the page is turned in the page return direction, the stroke data generation means generates the first stroke data using the position information acquired by the position acquisition means. Further, when it is detected by the page turning detection means that the page has been turned in the page advance direction, the page number reduction number instructed by the operation means and the page turning detection means by the page turning detection means. 3. The electronic writing apparatus according to claim 2, wherein when the number of page turnings detected in the direction matches, the page number to be associated with the second stroke data is determined to be the original page number.

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