JP6849774B2 - Methods, programs, and computers - Google Patents

Description

The present invention relates to a handwriting data drawing method and a handwriting data drawing device, and more particularly to a handwriting data drawing method and a handwriting data drawing device that electronically captures handwriting written on a paper surface as handwriting data and displays it on a screen.

When writing characters or pictures on a paper medium such as report paper, there is known a handwriting data drawing device that can electronically capture the handwriting as handwriting data. This type of device is generally configured to include a position detector such as a digitizer and an electronic pen that has both a function as an indicator and a function as a ballpoint pen. The paper medium is placed on the touch surface of the digitizer. According to this configuration, when a user writes characters or pictures on the surface of a paper medium using the ballpoint pen function of an electronic pen, the position detector acquires a series of coordinate data indicating a movement trajectory on the touch surface of the electronic pen. can do. The series of coordinate data acquired in this way becomes handwritten data indicating the handwriting of the electronic pen. Patent Document 1 discloses an example of such a handwritten data drawing device.

Patent Documents 2 and 3 disclose an example of a handwritten data drawing device that uses electronic paper composed of an ultra-thin display as a paper medium, instead of traditional paper made from plant fibers as a raw material. In these examples, the electronic paper and the position detector are placed on top of each other, and the user writes on the electronic paper with an electronic pen. Electronic paper does not have a position detection function, and handwriting is detected by a position detector. The position detector is configured to display the detected handwriting on electronic paper, thus giving the user the experience of writing on electronic paper.

Japanese Unexamined Patent Publication No. 2001-147771 JP-A-2007-206845 Japanese Unexamined Patent Publication No. 2003-022257

By the way, as illustrated in Patent Documents 1 and 2, for example, as a paper medium (traditional paper or electronic paper) used in a handwriting data drawing device, a paper medium including a plurality of pages may be used. In this case, the handwriting data drawing device needs to create the handwriting data separately for each page. Otherwise, the handwriting written on each of the plurality of pages of the paper medium will overlap in one page on the screen.

In Patent Documents 1 and 2, the handwritten data drawing device is provided with a function of discriminating the page being written, thereby realizing the creation of handwritten data for each page. Specifically, first, in the example of Patent Document 1, a barcode indicating a document name and a page number is pre-printed on each page of a paper medium, and the handwritten data drawing device reads the barcode with a code reader. This is configured to allow the user to determine which page is being written. On the other hand, in the example of Patent Document 2, an IC chip that stores a unique ID code is embedded in each page of the electronic paper, and the handwriting data drawing device reads the ID code to write the page that the user is writing. Is configured to determine.

However, according to the techniques of Patent Documents 1 and 2, since it is necessary to print a barcode or embed an IC chip in a paper medium in advance, it is essential to use a dedicated paper medium. If only a dedicated paper medium can be used, it will not be attractive as a product and will hinder its spread. Therefore, even though a general-purpose paper medium is used, by providing page breaks at arbitrary positions after the fact, each page It is desirable to be able to create handwritten data of.

Further, the handwritten data drawing apparatus of Patent Document 1 has a turning detection function. By using this function, it is possible to detect that the page being written has changed, so it is possible to create handwritten data for each page.

However, as disclosed in Patent Document 1, in order to realize the turning detection function, it is necessary to implement the hardware for that purpose in the handwriting data drawing device. Such hardware implementation causes a factor that pushes up the price of the handwriting data drawing device and also causes a failure. Therefore, not only the hardware of the handwriting data drawing device but also the post-processing by the software is used for each page. It is required to be able to create handwritten data.

Therefore, one of the objects of the present invention is handwriting that can appropriately classify handwritten data indicating the handwriting into handwritten data for each page after acquiring the handwriting written on a general-purpose paper medium including a plurality of pages. It is an object of the present invention to provide a data drawing method and a handwritten data drawing apparatus.

Further, in order to achieve the above purpose, even if the page break can be specified by the user after the fact, the handwritten data is already superimposed in the same place due to an erroneous operation. It's not easy for users to specify page breaks.

Even if the history of coordinate input operations is retained, the number of coordinate data input when taking input operation notes or sketching a picture is extremely large. Searching for an appropriate delimiter position from the inside causes a great burden on the user. Further, if the process of repeating the redrawing is performed every time the input coordinate position is returned by one on the time axis, the processing capacity of the handwriting data drawing device is also squeezed.

Therefore, another object of the present invention is a handwriting data drawing method and handwriting that can appropriately classify handwriting data for each page by a process that does not cause a heavy burden on the user and is light for the handwriting data drawing device. The purpose is to provide a data drawing device.

The handwritten data drawing method according to the first aspect of the present invention is for generating handwritten data composed of one or more stroke data based on the result of writing by a user on each page of a paper medium having a plurality of pages. A handwritten data drawing method, in which an acquisition step of acquiring a series of stroke data generated based on the writing result and ordered in the writing order, and a display in which all of the series of stroke data are displayed on a display means. A continuous part of the series of stroke data is specified based on the step, the input receiving step for receiving the input of the division position of the series of stroke data, the division position, and the writing order of the series of stroke data. A specific step, a redisplay step of rewriting the display of the display means by drawing a continuous portion of the specified series of stroke data in the writing order, and the input reception until a predetermined operation is input. It includes a step, the specific step, and a step of repeating the redisplay step.

Further, the handwritten data drawing method according to the second aspect of the present invention is the handwritten data drawing method according to the first aspect, and further, the input reception step displays the first user interface using the display unit. In the first user interface, the latest writing order of the acquired series of stroke data is associated with the maximum value, and the oldest of the series of stroke data is written. By having the user input one value in the range in which the writing order is associated with the minimum value, the input of the delimiter position is accepted.

Further, the handwritten data drawing method according to the third aspect of the present invention is the handwritten data drawing method according to the second aspect, and the first user interface is written first in the series of stroke data. The slider is composed of a slider having a starting point and the last written stroke data of the series of stroke data as an ending point, and the slider has a handle configured to be movable on the slider, and the input The reception step is configured to acquire the user-designated delimiter position based on the position of the handle on the slider, and the slider has one or more scales that correspond one-to-one with each of the series of stroke data. It is to have more.

Further, in the handwritten data drawing method according to the fourth aspect of the present invention, the handle moves to a position corresponding to each of the one or more scales in the handwritten data drawing method according to the third aspect, and the slider. It is configured so that it does not stop elsewhere above.

Further, the handwritten data drawing method according to the fifth aspect of the present invention further corresponds to the page division or the section division in the handwritten data drawing method according to the first aspect, and the predetermined operation is the division. It is a position determination operation, and if the division position is a page division when the predetermined operation is accepted, the first page is generated from one or more stroke data displayed on the display means at that time. At the same time, a second page is generated from the remaining one or more stroke data in the series of stroke data, and if the division position is a section division, one or more displayed on the display means at that time. A page generation step of generating a first section from the stroke data and generating a second section from the remaining one or more stroke data of the series of stroke data is further included.

Further, the handwritten data drawing method according to the sixth aspect of the present invention is the handwritten data drawing method according to the fifth aspect. Further, in the page generation step, if the break position is a page break, the first and first steps are made. The order information indicating the page creation order is associated with each of the two pages, and if the delimiter position is a section delimiter, the order information indicating the section creation order is associated with each of the first and second sections. It is composed.

The handwritten data drawing device according to the present invention is a handwritten data drawing device for generating handwritten data composed of one or more stroke data based on the result of writing by a user on each page of a paper medium having a plurality of pages. There is a stroke acquisition unit that acquires a series of stroke data that is generated based on the writing result and is ordered in the writing order, and a display unit that displays all of the series of stroke data on the display means. , The delimiter position input receiving unit that accepts the input of the delimiter position of the series of stroke data, the delimiter position, and the continuous part of the series of stroke data are specified based on the writing order of the series of stroke data. It includes a continuous portion specifying unit and a redisplay unit that rewrites the display of the display means by drawing the continuous portion of the specified series of stroke data in the writing order.

When a user writes on actual paper, it is usually not possible for a page or section to change while writing with a certain handwriting (stroke). Therefore, there is no problem in use in specifying the division in stroke data units as the position for dividing the data.

The present invention has been made in view of this point, and according to the first aspect thereof, after acquiring the handwriting written on each page of a general-purpose paper medium including a plurality of pages, the user is given a delimiter position. Since the steps of operating, identifying the continuous part of the stroke data by the delimiter position, and rewriting the display are repeated, the user can visually confirm the appropriate delimiter position and then classify the handwritten data for each page. It will be possible.

In addition, when specifying, since the continuous parts in the writing order are collectively specified as continuous parts in units of stroke data, the user is not burdened with specifying the stroke data that should belong to a predetermined page or the like, and handwriting is performed. For the data drawing device, the calculation load is reduced as compared with the case where redrawing is performed for each coordinate data.

Further, according to the second aspect of the present invention, the latest writing order in the writing order of the series of stroke data is associated with the maximum value, and the oldest writing order in the writing order of the series of stroke data is the smallest. By letting the user enter a value in one of the ranges associated with the value, the user can understand the meaning of the range, for example, with a slider that allows the user to enter a value within a range or the upper limit of the range. It is possible to intuitively prompt the user to input an input value within an appropriate range in a GUI or the like in which text is input after indicating the lower limit writing order.

Further, according to the third aspect of the present invention, by further having one or more scales corresponding to each of the series of stroke data on a one-to-one basis, it is suitable for the user to handle the processing in units of stroke data. The division position can be indicated.

Further, according to the fourth aspect of the present invention, the handle is moved only to the division position suitable for the user (that is, the stroke division position) corresponding to the processing in the stroke data unit (instead of the coordinate data unit). This makes it possible to facilitate the user's input of stroke delimiters.

Further, according to the fifth aspect of the present invention, the handwritten data input as written on one page or section in response to the user performing the operation of determining the delimiter position is input to two pages or It becomes possible to divide into sections.

Further, according to the sixth aspect of the present invention, it is possible to order each page or each section after division in the writing order.

It is a figure which shows the appearance of the handwriting data drawing apparatus 1 by this embodiment. It is a figure which shows the internal structure of the electronic pen 10, the digitizer 2, and the computer 30 shown in FIG. It is a figure which shows the internal structure of the touch sensor 2b and the sensor controller 20 shown in FIG. It is a figure which shows the example of the handwriting data file by this embodiment. It is a figure which shows the processing flow of the input / output part 21 which concerns on the lighting control of the LED lamp 5b shown in FIG. It is a figure which shows the functional block of the editor 34 shown in FIG. It is a figure which shows the display example of the touch screen 31 which received the display process by the display part 61 shown in FIG. It is a figure which shows the display example of the touch screen 31 after the touch button 70 shown in FIG. 7 is tapped by a user. It is a figure which shows the display example of the touch screen 31 when the user who saw the display of FIG. 8 moves a handle 72 by a slide operation. It is a figure which shows the display example of the touch screen 31 when the user who saw the display of FIG. 8 moves a handle 72 by a slide operation. FIG. 10 is a diagram showing a display example of the touch screen 31 after the user taps the touch button 74 in FIG. It is a figure which shows the processing flow of the editor 34 shown in FIG. It is a figure which shows the modification of the slider 71 by this embodiment. It is a figure which shows the other modification of the slider 71 by this embodiment. It is a figure which shows the further modification example of the slider 71 by this embodiment. It is a figure which shows the modification of the 1st and 2nd user interface by this embodiment.

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

FIG. 1 is a diagram showing the appearance of the handwritten data drawing apparatus 1 according to the present embodiment. As shown in the figure, the handwriting data drawing device 1 includes a digitizer 2, an electronic pen 10, and a tablet-type computer 30. Of these, the digitizer 2 is a device having a function as a position detector constituting a position detection device by an electromagnetic induction (EMR: Electro-Magnetic Resonance) method and a function as a stationery called a clipboard or a clipboard. Further, the electronic pen 10 is a device having a function as an indicator constituting a position detection device by an electromagnetic induction method and a function as a writing instrument for leaving a handwriting on the surface of a paper medium such as a ballpoint pen. Both the digitizer 2 and the computer 30 have a flat plate-like appearance, and are fixed to one side and the other side of the spread of the notebook type cover 40, respectively.

First, an outline of the handwritten data drawing device 1 will be described. The handwriting data drawing device 1 is a series of handwriting showing the handwriting when the user writes characters or pictures on the surface (writing surface) of the report paper P sandwiched between the digitizers 2 as the stationery using the electronic pen 10 as the writing tool. The handwritten data including the coordinate data of the above is taken in by the digitizer 2 as a position detector, later transferred to the computer 30, and displayed on the touch screen 31 of the computer 30.

As a basic operation, the digitizer 2 is configured to accumulate a series of coordinate data to be sequentially captured in one file. Since the process of recognizing which page of the report paper P is written is not performed, if the user writes on multiple pages while turning over the report paper P, different pages are contained in one file. Coordinate data related to handwriting will be included. When the handwritten data accumulated in this way is displayed on the touch screen 31 of the computer 30, the handwriting on a plurality of pages is displayed in an overlapping manner.

However, since this cannot withstand actual use, the digitizer 2 is provided with an operation button 4. When the user presses the operation button 4, the digitizer 2 switches the file in which the coordinate data is stored to a new file. As a result, a file of handwritten data is created for each page, so that it is possible to prevent the handwriting on the plurality of pages from overlapping and being displayed on the touch screen 31 as described above.

However, as a practical matter, the user may forget to press the operation button 4. In particular, except when the handwritten data is displayed on the touch screen 31 of the computer 30 in real time (details will be described later), the user must operate the operation button 4 without visually recognizing the handwritten data detected by the digitizer 2. However, this induces forgetting to press the operation button 4. The handwriting data drawing device 1 according to the present embodiment prevents the operation button 4 from being forgotten to be pressed by devising the lighting state of the LED lamps 5a and 5b provided in the digitizer 2, and the user temporarily presses the operation button 4. Even if it is forgotten, it is possible to divide the page after the fact by a user operation on the computer 30. Hereinafter, the details will be described step by step.

First, the digitizer 2 will be described. The digitizer 2 as a stationery is configured to have a flat surface 2a on which the report paper P is placed and a clip 3 provided near one end of the surface 2a. The clip 3 is configured to be able to hold a paper medium, and the user uses the handwriting data drawing device 1 with the report paper P sandwiched between the clips 3. Although the report paper P is used in the present embodiment, it goes without saying that other types of paper media (including traditional paper and electronic paper) may be used. However, since it is used by being sandwiched between the electronic pen 10 as an indicator and the digitizer 2 as a position detector, a paper medium having an action of obstructing the passage of a magnetic field or an electromagnetic wave, such as a paper in which a magnetic material is squeezed, is used. , Cannot be used with the handwritten data drawing device 1.

The digitizer 2 as a position detector includes a CPU and a storage device (not shown) and a touch sensor 2b (shown). The operation of the digitizer 2 described below is executed by operating the CPU according to the program stored in the storage device. Further, the digitizer 2 is configured to operate by electric power supplied from a built-in battery (not shown).

The touch sensor 2b has a configuration in which a plurality of loop coils LC (see FIG. 3 described later) are arranged in a rectangular plane region, and is a part of the surface 2a as shown by a broken line in FIG. Be placed. As shown in FIG. 1, the specific shape and position of the installation area of the touch sensor 2b are such that when the report paper P is placed on the surface 2a, the entire report paper P falls within the installation area. It is composed of. This is to enable the user's handwriting to be captured as handwritten data on the entire surface of the report paper P.

The digitizer 2 has a function of acquiring coordinate data indicating the position of the electronic pen 10 on the touch sensor 2b. This acquisition is performed periodically while the electronic pen 10 is present on the touch sensor 2b. Therefore, when the electronic pen 10 moves on the touch sensor 2b, a series of coordinate data indicating the movement locus (= handwriting) is acquired by the digitizer 2. The digitizer 2 is configured to sequentially store a series of coordinate data thus acquired in the memory 23 shown in FIG. 2, which will be described later.

Further, the digitizer 2 receives various information about the electronic pen 10 (information indicating the force applied to the pen tip 10a from the writing surface at the time of writing (hereinafter, referred to as "writing pressure") and an electron each time the coordinate data is acquired. The side switch information indicating the on / off state of the side switches 10b and 10c provided on the pen 10; hereinafter, may be collectively referred to as “pen information”) is acquired, and is associated with the acquired coordinate data, which will be described later. It is configured to be stored in the memory 23 shown in 2.

Here, the digitizer 2 using the electromagnetic induction method can obtain coordinate data and pen information about the electronic pen 10 as long as the electronic pen 10 is not necessarily in contact with the touch sensor 2b but is close to the touch sensor 2b. Can be obtained. Therefore, even if the report paper P is sandwiched between the electronic pen 10 and the touch sensor 2b, the digitizer 2 can acquire the coordinate data and the pen information as long as the thickness of the report paper P is less than or equal to a certain level.

On the contrary, even when the electronic pen 10 is not in contact with the surface of the report paper P and the writing is not actually performed, if the distance between the electronic pen 10 and the touch sensor 2b is less than a certain level, the digitizer 2 acquires coordinate data and pen information. This is dealt with by excluding the coordinate data whose pen pressure is zero from the stroke data generation target when the stroke data (described later) is generated by the computer 30. Details will be described later.

In addition, as mentioned above, the digitizer 2 includes an operation button 4 and LED lamps 5a and 5b. All of these are arranged on the surface 2a as shown in FIG. As a specific position on the surface 2a, a position that is not hidden even if the report paper P is placed is selected so that the user who is writing can operate or visually recognize it. The arrangement shown in FIG. 1 is an example of such an arrangement. In this example, the LED lamp 5a, the operation button 4, and the LED lamp 5b are arranged side by side along one side of the surface 2a in the longitudinal direction. The specific functions and uses of the operation buttons 4 and the LED lamps 5a and 5b will be described in detail later.

Next, the electronic pen 10 will be described. As shown in FIG. 1, a pen tip 10a is provided at one end of the electronic pen 10. The user writes characters and pictures by moving the pressing position while pressing the pen tip 10a against the surface of the report paper P.

Although not shown, the electronic pen 10 as a writing instrument is configured as a ballpoint pen having, for example, a thin tube for storing ink and an exuding portion for exuding the ink accumulated in the tube from the pen tip 10a. In this case, the ink exuded from the pen tip 10a through the exuding portion forms a handwriting on the writing surface.

The function required for the electronic pen 10 as a writing instrument is essentially a function capable of writing on a paper medium placed on the surface of the digitizer 2. Therefore, it is not essential for the electronic pen 10 to have a ballpoint pen function as described above, and the electronic pen 10 may be configured so that writing can be performed using graphite, for example, a pencil or a mechanical pencil. Further, for example, when using thermal paper or electronic paper, the electronic pen 10 can be configured as a stylus having no ability to put ink or graphite on the writing surface.

The electronic pen 10 as an indicator extracts power for operation from the two side switches 10b and 10c shown in the drawing and a magnetic field (described later) generated by the digitizer 2, which is not shown in FIG. On the other hand, it is configured to have a resonance circuit (see FIG. 2 described later) that plays a role of transmitting a signal. Further, the electronic pen 10 includes a side switch information acquisition unit (not shown) that acquires side switch information indicating an on / off state of each of the side switches 10b and 10c. It is not essential that the electronic pen 10 is provided with a side switch, and the number of side switches provided is not limited to two and may be one or more.

Hereinafter, the configuration and function of the position detection device configured by these will be described in more detail with reference to the internal configurations of the electronic pen 10 and the digitizer 2.

FIG. 2 shows the internal configuration of the electronic pen 10 and the digitizer 2. As shown in the figure, the electronic pen 10 includes an LC resonance circuit including a capacitor 11 and an inductor 12. Further, the digitizer 2 includes a sensor controller 20, an input / output unit 21, a wireless communication unit 22, and a memory 23.

The inductor 12 of the electronic pen 10 plays a role of generating an induced voltage according to the magnetic field supplied from the touch sensor 2b of the digitizer 2 and charging the capacitor 11. After the supply of the magnetic field from the touch sensor 2b is stopped, the inductor 12 transmits a reflected signal to the digitizer 2 by using the voltage accumulated in the capacitor 11. The reflected signal transmitted in this way includes a continuous signal for position detection, a start signal indicating the end of the continuous signal, and side switch information in this order.

The capacitance of the capacitor 11 is configured to change depending on the force (= writing pressure) applied from the writing surface to the pen tip 10a (FIG. 1) of the electronic pen 10. Since the resonance frequency of the resonance circuit changes when the capacitance of the capacitor 11 changes, the frequency of the reflected signal transmitted as described above also changes depending on the writing pressure. This change in frequency is used to detect the pen pressure by the digitizer 2. Details will be described later.

The sensor controller 20 of the digitizer 2 periodically acquires coordinate data indicating the position of the electronic pen 10 on the touch sensor 2b, and each time the coordinate data is acquired, the sensor controller 20 of the electronic pen 10 acquires the pen information of the electronic pen 10 and corresponds to these. It is configured to have a function of being attached and stored in the memory 23.

FIG. 3 is a diagram showing the internal configurations of the touch sensor 2b and the sensor controller 20. As shown in the figure, first, the touch sensor 2b has a configuration in which a plurality of loop coils LC are arranged in a rectangular plane region. One end of each loop coil LC is grounded and the other end is connected to the sensor controller 20. In FIG. 3, as an example of a plurality of loop coils LC, 40 loop coils X _{1 to} X _{40 extending in the y direction and 40 Y 1} to X 40 extending in the x direction orthogonal to the y direction are shown. It is illustrated and Y _40. Hereinafter, the description will be continued the 80 pieces of the loop coil _{X 1 ~X 40, Y 1 ~Y} 40 on the assumption, the number of loop coils LC to be provided to the touch sensor 2b is not limited to this.

As shown in FIG. 3, the sensor controller 20 includes a selection circuit 50, a switch circuit 51, an amplifier 52, a detection circuit 53, a low-pass filter (LPF) 54, a sample hold circuit (S / H) 55, and the like. It includes an analog-to-digital conversion circuit (A / D) 56, a control unit 57, an oscillator 58, and a current driver 59.

The other end of each loop coil LC is connected to the selection circuit 50. Selection circuit 50 selects one or a plurality of a loop coil _X 1 _{to X 40,} Y 1 _{to Y 40} under the control of the control unit 57, connecting the selection to the switching circuit 51 circuit Is.

The switch circuit 51 is a switch having one common terminal and two selection terminals, and is configured so that the selection terminals connected to the common terminals can be switched according to the control from the control unit 57. The selection circuit 50 is connected to the common terminal of the switch circuit 51, the input terminal of the amplifier 52 is connected to one selection terminal, and the output terminal of the current driver 59 is connected to the other selection terminal.

The amplifier 52 is a circuit that amplifies the voltage signal supplied from the selection circuit 50 via the switch circuit 51 and outputs it to the detection circuit 53. The detection circuit 53 is a circuit that generates an envelope signal by performing an envelope detection on a voltage signal output from the amplifier 52 and outputs the envelope signal to the low-pass filter 54. The low-pass filter 54 plays a role of removing high frequency components from the envelope signal generated by the detection circuit 53. The sample hold circuit 55 is configured to perform a sample operation and a hold operation of the envelope signal whose high frequency component has been removed by the low-pass filter 54 at predetermined time intervals. The analog-to-digital conversion circuit 56 generates a digital signal by performing analog-digital conversion on the signal held by the sample hold circuit 55, and outputs the digital signal to the control unit 57.

The control unit 57 is a processor that operates according to a program stored in a storage device (not shown). The operation performed by the control unit 57 includes control of the selection circuit 50, the switch circuit 51, the sample hold circuit 55, and the analog-to-digital conversion circuit 56, and a process of acquiring coordinate data and pen information of the electronic pen 10.

The oscillator 58 is configured to generate an AC signal of a predetermined frequency. The current driver 59 plays a role of converting the AC signal output from the oscillator 58 into a current signal and supplying it to the switch circuit 51.

The acquisition of coordinate data and pen information by the control unit 57 will be specifically described. First, the control unit 57 is configured to connect the other selection terminal of the switch circuit 51 (selection terminal connected to the current driver 59) to the common terminal, the loop coil X ₁ to X 40 to the selection circuit _50, Y Have them select one of _{1 to Y 40.} Then, a magnetic field is generated in the selected loop coil LC by the current signal output from the current driver 59. Although here is to select the loop coil LC of one selects for example one from among the loop coils _X 1 _{to X 40,} a single total of two from among the loop coils _Y 1 _{to Y 40} It may be that. Moreover, as it apart from the loop coil _{X 1 ~X 40, Y 1 ~Y} 40, disposed loop coil of the magnetic field generating only along the outer periphery of the touch sensor 2b, at this stage of selecting only the dedicated loop coils May be good.

When the electronic pen 10 enters the magnetic field generated in the loop coil LC, an induced voltage is generated in the inductor 12 (FIG. 2) of the electronic pen 10 and the electric charge is accumulated in the capacitor 11 (FIG. 2) as described above. To. After a predetermined time has elapsed since the control unit 57 connects the other selection terminal of the switch circuit 51 to the common terminal, this time, the control unit 57 has one selection terminal of the switch circuit 51 (selection terminal connected to the amplifier 52). To the common terminal. Then, the generation of the magnetic field from the loop coil LC ends. In response to this, the electronic pen 10 starts transmitting the above-mentioned reflected signal (a signal including a continuous signal, a start signal, and side switch information in this order).

The control unit 57 is configured to determine the content of the reflected signal transmitted by the electronic pen 10 by decoding the digital signal supplied from the analog-to-digital conversion circuit 56. Then, while the electronic pen 10 is transmitting a continuous signal, the loop coil LC selected by the selection circuit 50 is continuously switched, so that the loop coils X _{1 to} X ₄₀ and Y _{1 to Y 40} are respectively used. Scan the generated voltage. Since the voltage detected in this way increases as the distance between the loop coil LC and the electronic pen 10 becomes shorter, the control unit 57 can obtain coordinate data indicating the position of the electronic pen 10 from the scanning result.

In order to shorten the scanning time, it is only the first time that all the loop coil LCs are scanned and the position is detected as described above (in this case, in the first position detection, the electronic pen 10 transmits the start signal and the pen information. Even during transmission, these are regarded as continuous signals to perform position detection), and from the second time onward, only the loop coil LC located in the vicinity of the previously detected position may be scanned.

On the other hand, while the electronic pen 10 is transmitting the side switch information, the control unit 57 receives any one loop coil LC (usually, the detected electronic pen) according to the position of the detected electronic pen 10. The one closest to the position of 10) is selected by the selection circuit 50. Then, the side switch information transmitted by the electronic pen 10 is acquired from the decoding result of the signal obtained through the loop coil LC thus selected.

Here, as described above, the frequency of the reflected signal transmitted by the electronic pen 10 changes depending on the writing pressure. The control unit 57 is configured to be able to detect the frequency of the reflected signal transmitted by the electronic pen 10, and is configured to acquire the writing pressure of the electronic pen 10 from the detected frequency.

The control unit 57 associates the coordinate data and pen information (pen pressure and side switch information) acquired as described above with the time stamp information indicating the time when the acquisition is completed, and the memory shown in FIG. It is sequentially accumulated in 23. The memory 23 is configured to manage data in file units, and the control unit 57 writes the acquired coordinate data and pen information to a file in the memory 23 to store them in the memory 23. ..

Return to FIG. The input / output unit 21 is configured to have a function of executing processing according to a pressed state of the operation button 4 and a function of controlling the lighting state of the LED lamps 5a and 5b.

The operation button 4 is an operation receiving means for receiving a predetermined operation by the user. Hereinafter, the processing of the input / output unit 21 relating to the operation button 4 will be described with reference to the following Table 1.

As shown in Table 1, the digitizer 2 has two modes, a scan mode and a sleep mode. The scan mode is a mode for executing a search (position detection) of the electronic pen 10 and acquisition of coordinate data and pen information about the electronic pen 10 found by the search. On the other hand, the sleep mode is a mode in which these are not performed. As shown in Table 1, the digitizer 2 is in a non-operation state (a state in which neither the operation button 4 nor the electronic pen 10 is detected) continues for a predetermined time (for example, 30 minutes) in the scan mode. Automatically, that is, it shifts to sleep mode regardless of user operation. When the user presses the operation button 4 for a short time (for example, pressing the operation button 4 continuously for less than 5 seconds) after the digitizer 2 shifts to the sleep mode, the input / output unit 21 shifts the digitizer 2 to the scan mode.

When the user presses and holds the operation button 4 (for example, pressing it continuously for 5 seconds or more) while the digitizer 2 is in the scan mode, the input / output unit 21 causes the sensor controller 20 to search for the electronic pen 10 again. That is, the sensor controller 20 is made to perform the position detection (the first position detection described above) performed by scanning all the loop coil LCs again.

On the other hand, when the user presses the operation button 4 for a short time (for example, pressing it continuously for less than 5 seconds) when the digitizer 2 is in the scan mode, the input / output unit 21 stores the coordinate data or the like by the sensor controller 20. A process for switching from the previous file (first area in the memory 23) to a new file (second area in the memory 23) is performed. As a result, if it can be assumed that the user is surely pressing the operation button 4 at the timing of turning the page of the report paper P, a handwritten data file is created for each page of the report paper P.

FIG. 4 shows an example of a handwritten data file created in this way. As shown in the figure, data including coordinate data (X, Y), pen pressure P, side switch information SW1 and SW2, and time stamp information time are sequentially expressed from the sensor controller 20 (hereinafter, this data is referred to as "unit". "Handwritten data") is output. The side switch information SW1 and SW2 correspond to the side switches 10b and 10c (FIG. 1) of the electronic pen 10, respectively. The output unit handwritten data is stored in a file in the memory 23, but when the operation button 4 is pressed, the file (for example, the file # 1) that has accumulated the unit handwritten data up to that point is closed. Then, a new storage file (for example, # 2 file) is generated. Each file is associated with a time stamp information time corresponding to the latest unit handwritten data contained therein. As a result, when the computer 30 or the like later refers to each file, it becomes possible to know the writing order between the files.

Returning to FIG. 2, the LED lamps 5a and 5b are light emitting elements, respectively, and function as notification means having a notification function to the user. Hereinafter, the control of the lighting state of the LED lamps 5a and 5b by the input / output unit 21 will be described in detail with reference to Table 2 below.

Table 2 shows the control conditions, the priority of lighting control, the LED lamp to be controlled, and the controlled lighting state. As shown in the table, first, when the remaining amount of the memory 23 is zero, the input / output unit 21 blinks the LED lamp 5a in amber and the LED lamp 5b in green. This lighting state can have a great impact on the user, and the user can see this and know that new handwritten data cannot be stored in the memory 23. In this case, the user controls the wireless communication unit 22, which will be described later, by, for example, operating on the computer 30, so that the file stored in the memory 23 is transmitted to the computer 30. By doing so, it becomes possible to secure a free area in the memory 23. It should be noted that this lighting control is performed in preference to the other types of lighting control described below.

Next, the input / output unit 21 blinks the LED lamp 5a in amber when the remaining amount of the built-in battery of the digitizer 2 becomes a predetermined amount or less. Further, when the built-in battery of the digitizer 2 is being charged, the LED lamp 5a is turned on in amber. As a result, the user can recognize the necessity of charging the built-in battery and the fact that the built-in battery is being charged by referring to the LED lamp 5a. Note that these lighting controls are not performed when the remaining amount of the memory 23 is zero, while they are performed in preference to other types of lighting controls described below.

Next, the input / output unit 21 turns off both the LED lamps 5a and 5b when the digitizer 2 is in the sleep mode. On the other hand, when the digitizer 2 is in the scan mode, the lighting state of the LED lamp 5b is controlled as follows. That is, first, when the electronic pen 10 is being searched, the LED lamp 5b is blinked in green (first color). Further, when the search for the electronic pen 10 is completed and the unit handwriting data is being acquired, but the pen-up state is set and no unit handwriting data is yet accumulated in the file currently accumulating the unit handwriting data. , The LED lamp 5b is turned on in light green (second color). Further, when the unit handwriting data is being acquired and the pen is in the pen-down state, the LED lamp 5b is turned on in green. Then, when the unit handwriting data is being acquired and is in the pen-up state, and one or more unit handwriting data is accumulated in the file currently accumulating the unit handwriting data, the LED lamp 5b is turned light green. Blink slowly. Finally, when the operation button 4 is pressed to switch the file to be stored, the LED lamp 5b blinks quickly in light green only three times. Regarding the determination of whether the electronic pen 10 is in the pen-up state or the pen-down state, the input / output unit 21 monitors the pen pressure included in the pen information output from the sensor controller 20, and the pen pressure is zero. This is done by determining a "pen-up state" in some cases and a "pen-down state" in other cases.

Particularly important in controlling the lighting state of the LED lamp 5b in the scan mode is to make the LED lamp 5b blink slowly in light green. In this case, considering that one or more unit handwritten data is accumulated in the accumulating file and it is in the pen-up state, let's finish writing on one page and move to the next page. There is a possibility that Therefore, the input / output unit 21 sets the LED lamp 5b to a characteristic lighting state of light green and slowly blinking, so that the user is warned, "Is it unnecessary to switch the file that stores the unit handwritten data?" Is urging. If you are really trying to switch pages, the user who is alerted by this lighting state can press the operation button 4 to switch files.

The lighting control of the LED lamp 5b will be described in more detail again with reference to the processing flow of the input / output unit 21.

FIG. 5 is a diagram showing a processing flow of the input / output unit 21 for controlling the lighting of the LED lamp 5b. However, FIG. 5 also describes some other processes (step S6a described later). The processing flow shown in the figure is periodically and repeatedly executed by the input / output unit 21.

As shown in FIG. 5, the input / output unit 21 first determines whether or not the remaining amount of the memory 23 is zero (step S1). As a result, if the remaining amount of the memory 23 is zero, the LED lamp 5b is blinked in green (step S2). On the other hand, if the remaining amount of the memory 23 is not zero, it is next determined whether or not the digitizer 2 has entered the sleep mode (step S3). As a result, if the digitizer 2 has entered the sleep mode, the LED lamp 5b is turned off (step S4). On the other hand, if the digitizer 2 has not entered the sleep mode, it is next determined whether or not the operation button 4 is pressed (step S5). As a result, if it is pressed, the LED lamp 5b is blinked in light green three times quickly (step S6). At the same time, as described above, the input / output unit 21 also performs a process for switching the storage destination of the unit handwritten data by the sensor controller 20 from the previous file to a new file (step S6a).

If the operation button 4 is not pressed in step S5, the input / output unit 21 then determines whether or not the sensor controller 20 is searching for the electronic pen 10 (step S7). As a result, if the search is in progress, the LED lamp 5b is blinked in green (step S8). On the other hand, if the search is not in progress, then it is determined whether or not the electronic pen 10 is in the pen-down state (step S9). As described above, this determination is performed by monitoring the pen pressure output from the sensor controller 20. As a result of the determination, if the pen is in the pen-down state, the LED lamp 5b is turned on in green (third notification, step S10). On the other hand, if it is not in the pen-down state, it is determined whether or not the unit handwritten data is already stored in the stored file (step S11). As a result, if it is not stored, the LED lamp 5b is lit in light green (second notification, step S12), and if it is stored, the LED lamp 5b is slowly blinked in light green (first notification, step S12). ).

By controlling the lighting of the LED lamp 5b by the input / output unit 21 as described above, as described above, when the user finishes writing on a certain page and is about to move to the next page, the user is notified. , "Is it unnecessary to switch the file that stores the unit handwritten data?"

Return to FIG. The wireless communication unit 22 is a functional unit having a function of taking out a file stored in the memory 23 and transmitting the file to the computer 30 by wireless communication. The transmission of the file by the wireless communication unit 22 may be executed in response to a user operation in the digitizer 2, or may be executed in response to a transmission instruction received from the computer 30. In the latter case, the computer 30 may transmit a transmission instruction to the digitizer 2 in response to a user operation on the computer 30. Further, when the digitizer 2 and the computer 30 come close to a communicable distance, the transmission may be automatically executed. Specifically, for example, Bluetooth (registered trademark) is preferably used as the wireless communication, but other communication standards such as Wi-Fi (registered trademark) and NFC (registered trademark) can also be used. Is.

The wireless communication unit 22 according to the present embodiment transmits handwritten data in file units, but each time the sensor controller 20 stores the unit handwritten data for one coordinate in the memory 23, the unit handwritten data is transmitted. It may be that. By doing so, the handwritten data can be displayed in real time on the touch screen 31 of the computer 30. This is also effective when displaying handwritten data on electronic paper as a paper medium as in Patent Documents 2 and 3. In this case, the wireless communication unit 22 preferably notifies the computer 30 to that effect when the operation button 4 is pressed. By doing so, in the present embodiment, the file switching function performed by the input / output unit 21 can be provided on the computer 30 side.

Returning to FIG. 1, the computer 30 will be described next. As described above, the computer 30 is a tablet-type computer, and includes a touch screen 31 and operation buttons 32. Although not shown, the computer 30 includes a CPU and a storage device, and the operations of the computer 30 described below are executed by the CPU operating according to a program stored in the storage device. Further, the touch screen 31 is configured to be able to detect a user's touch operation (including a tap operation and a slide operation), and the computer 30 determines the user operation detected by the touch screen 31 and the pressed state of the operation button 32. It is configured to perform the operation according to.

In the present embodiment, an example in which a tablet-type computer is used as the computer 30 will be described, but the computer 30 as a component of the handwriting data drawing device 1 does not necessarily have to be a tablet-type computer, for example, a desktop-type computer or the like. It may be a notebook type. Further, as shown in FIG. 1, it is not essential to mount the computer 30 together with the digitizer 2 on one notebook type cover 40. Further, the electronic paper as a paper medium to be placed on the digitizer 2 may have a function as a computer 30. Further, the computer 30 may be configured to perform an operation according to an operation by a mouse or a keyboard together with the touch operation of the user or instead of the touch operation of the user.

FIG. 2 also shows the internal configuration of the computer 30. As shown in the figure, the computer 30 includes a wireless communication unit 32, a stroke builder 33, an editor 34, and a memory 35 inside the computer 30.

The wireless communication unit 32 has a function of receiving a series of handwritten data from the digitizer 2 and supplying the stroke builder 33. The stroke builder 33 is configured to generate stroke data, which is vector data for drawing, based on the series of handwritten data supplied in this way, and store the stroke data in the memory 35.

FIG. 4 also shows a specific example of the data stored in the memory 35 by the stroke builder 33. As shown in the figure, the stroke builder 33 performs a process of collecting one or more unit handwritten data stored in each file into stroke unit data (stroke data).

A specific method for generating stroke data will be described. In order to generate stroke data from a series of unit handwritten data, it is first necessary to determine the break between strokes. The stroke builder 33 determines this division by referring to the pen pressure in each unit handwriting data. That is, since the unit handwriting data in which the corresponding writing pressure is zero is acquired in the pen-up state, it does not contribute to the handwriting. Therefore, the stroke builder 33 excludes such unit handwriting data from the generation target of the stroke data, and determines that the place where the excluded unit handwriting data is included is the stroke delimiter. Then, one stroke data is generated by a set of one or more unit handwritten data specified by this delimiter.

When the stroke builder 33 generates the stroke data, the stroke builder 33 adds order information to each of the generated series of stroke data by referring to the time stamp information of each unit handwritten data. As a result, each stroke data in the file stored in the memory 35 is ordered in the writing order. In the example of FIG. 4, the data written as "order n" (n is a natural number) is the order information, and the natural number n indicates the writing order.

As described above, the stroke builder 33 of the present invention holds the stroke data as vector data together with the writing order without rasterizing the unit handwriting data (pixel data conversion). As a result, the stroke data can be specified in the memory 35 based on the writing order in the processing described later.

Return to FIG. The editor 34 has a function of taking out a file stored in the memory 35, performing drawing processing of each stroke data contained therein, and displaying the result on the touch screen 31, and a user's touch operation on the touch screen 31. It is configured to have a function of recognizing and performing processing according to its contents.

FIG. 6 is a diagram showing functional blocks of the editor 34. As shown in the figure, the editor 34 functionally includes a stroke data acquisition unit 60, a display unit 61, a break position input reception unit 62, a continuous part identification unit 63, a redisplay unit 64, a confirmation reception unit 65, a page, and the like. It is configured to have a generation unit 66.

The stroke data acquisition unit 60 is a functional unit that acquires a series of stroke data included in the data corresponding to one page from the memory 35. In this example, the data corresponding to one page is included in one file. One page referred to here may be one section among a plurality of sections contained in a certain file. Further, each of the pages or sections may be extracted from the file by a specific range in the file specified by the start byte position and the end byte position, or by a delimiter code. In the following, the expression "page, etc." may be used to refer to a page or section. The display unit 61 performs a predetermined drawing process on all of the series of stroke data acquired by the stroke data acquisition unit 60, and displays the result on the touch screen 31 (display means).

FIG. 7 is a diagram showing a display example of the touch screen 31 that has undergone display processing by the display unit 61. In the example shown in the figure, the stroke data for two pages of the report paper P, that is, the eight stroke data indicating "123456" (Note: "4" and "5" are respectively) on the page or the like to be displayed. It includes a stroke data group G1 consisting of two strokes) and a stroke data group G2 consisting of nine stroke data indicating "abcdefg" (Note: "b" and "f" are two strokes each). Is assumed. The writing order of these stroke data (writing order indicated by the order information) is the first stroke of "1", "2", "3", "4", the second stroke of "4", and "5". 1st stroke, "5" 2nd stroke, "6", "a", "b" 1st stroke, "b" 2nd stroke, "c", "d", "e", The order is "f", the first stroke, "f", the second stroke, and "g". The user recognizes that the stroke data group G1 and the stroke data group G2 are written on separate pages, but because he forgot to press the operation button 4 when changing pages, these are included in one page or the like. There is. As a result, as shown in FIG. 7, "123456" and "abcdefg" are displayed overlapping on one screen.

Return to FIG. The break position input receiving unit 62 is a functional unit that receives input of a break position of a series of stroke data acquired by the stroke data acquisition unit 60. The delimiter position corresponds to a page delimiter or a section delimiter.

Further, as illustrated in FIG. 7, the break position input reception unit 62 is configured to display a touch button 70 for instructing the user to shift to the page edit mode. When the touch button 70 is tapped by the user, the delimiter position input receiving unit 62 erases the touch button 70, and as illustrated in FIG. 8, a slider 71 (first user interface) for allowing the user to specify the delimiter position. ) And the touch button 74 (second user interface) for causing the user to perform the operation of confirming the division position.

The configurations of the touch button 70, the slider 71, and the touch button 74 will be specifically described. First, the touch buttons 70 and 74 are both buttons for accepting a user's tap operation, and FIGS. 7 and 8 show an example composed of a quadrangular region having a description of "Create Page". It shows. However, it is not essential that the touch buttons 70 and 74 have the same configuration as described above.

The slider 71 is originally a GUI (Graphical User Interface) that accepts an input value of one value within a certain range. In the present embodiment, the maximum value in the range of the slider 71 is associated with the latest stroke data among all the stroke data associated with one acquired page or the like, and is set to the minimum value. Is associated with the stroke data with the oldest writing order. In other words, the slider 71 starts from the first written stroke data in the series of stroke data acquired by the stroke data acquisition unit 60, and is written last among the one or more stroke data. Is configured as the end point. Then, the input value of the slider 71 is used to change the delimiter position between the displayed stroke data and the non-displayed stroke data. That is, the slider 71 has a range in which the latest writing order in the writing order of the series of stroke data is associated with the maximum value, and the oldest writing order in the writing order of the series of stroke data is associated with the minimum value. Have the user enter a value for one of them. Further, the slider 71 has a handle 72 configured to be movable on the slider 71 by a user's slide operation. The handle 72 is a GUI element for operating the slider 71, and is one element of the slider 71, which is also called a knob or a knob. The handle 72 may be the end of a bar that does not have a special shape and is distinguished by a predetermined color. As shown in FIGS. 9 and 10 described later, the area from the start point of the slider 71 to the handle 72 may be highlighted by a thick line or the like. The position of the handle 72 on the slider 71 indicates the break position, and the break position input receiving unit 62 is configured to receive the input of the break position based on the position of the handle 72 on the slider 71.

The slider 71 is further configured to have one or more scales 73 that correspond one-to-one with each of the series of stroke data acquired by the stroke data acquisition unit 60. In the example of FIG. 8, since the stroke data groups G1 and G2 to be displayed include a total of 17 stroke data, the slider 71 is provided with 17 scales 73. It is preferable that the scales 73 are provided at equal intervals, but time stamp information is associated with each stroke data in the file of the memory 35, and the position of each scale 73 on the slider 71 based on the time stamp information. May be decided. The specific interval between the scales 73 varies depending on the number of stroke data to be displayed.

It is preferred that the handle 72 be configured to move to a position corresponding to the scale 73 and not stop elsewhere on the slider 71. That is, when the user moves the handle 72 by the slide operation, it does not move smoothly, but moves in a rattling manner from the scale 73 to the scale 73, and always moves to the position of each scale 73 corresponding to each stroke data. Therefore, it is preferable to set and configure the displacement amount of the handle 72. However, it goes without saying that the handle 72 may be configured so as to move smoothly according to the slide operation of the user.

9 and 10 show a display example when the user who has seen the display of FIG. 8 moves the handle 72 by a slide operation. In the example of FIG. 9, the user moves the handle 72 to the fourth scale 73 from the right. In this case, the stroke data corresponding to "e" corresponds to the dividing position. On the other hand, in the example of FIG. 10, the user moves the handle 72 to the tenth scale 73 from the right. In this case, the stroke data corresponding to "6" corresponds to the dividing position.

Return to FIG. The continuous portion identification unit 63 is indicated by the division position acquired by the division position input reception unit 62 and the writing order of a series of stroke data acquired by the stroke data acquisition unit 60 (order information stored in the file). Based on the writing order), it is configured to specify a continuous part of the series of stroke data. More specifically, the continuous portion specifying unit 63 identifies the stroke data corresponding to the division position from the series of stroke data, and further, based on the writing order, is the oldest of the series of stroke data. The first part including the stroke data written in the above and the stroke data corresponding to the division position and the other second part are specified, and the first part is configured to be a continuous part.

In the example of FIG. 9, 14 stroke data corresponding to "123456abcde" are specified by the continuous portion specifying unit 63. Further, in the example of FIG. 10, eight stroke data corresponding to "123456" are specified by the continuous portion specifying unit 63.

The redisplay unit 64 has a function of rewriting the display of the touch screen 31 by drawing the continuous portion specified by the continuous portion specifying unit 63 in the writing order. As a result, as illustrated in FIGS. 9 and 10, only one or more stroke data constituting the continuous portion specified by the continuous portion specifying unit 63 is displayed on the touch screen 31, and the other stroke data is displayed. Will not be done. Therefore, the user can visually confirm the currently identified stroke data.

Even after the redisplay by the redisplay unit 64, the delimiter position input reception unit 62 keeps displaying the slider 71 as illustrated in FIGS. 9 and 10. Therefore, each time the user moves the handle 72, the processes of the delimiter position input receiving unit 62, the continuous portion specifying unit 63, and the redisplay unit 64 are repeated. As a result, the user can specify only the stroke data group G1 corresponding to the appropriate stroke data specific state (for example, in the example of FIGS. 7 to 10, “123456” written on the first page as shown in FIG. The state of being) can be realized.

Returning to FIG. 6, the confirmation reception unit 65 is a functional unit that accepts a determination operation of the division position. Specifically, this confirmation operation is a tap operation of the touch button 74 (see FIG. 10). The page or the like generation unit 66 is based on one or more stroke data displayed on the touch screen 31 at that time if the delimiter position is a page delimiter when the definite reception unit 65 accepts the definite operation of the delimiter position. The first page is generated, and the second stroke data is based on the remaining one or more stroke data of the initially displayed series of stroke data (series of stroke data acquired by the stroke data acquisition unit 60). If a page is generated and the break position is a section break, the first section is generated based on one or more stroke data displayed on the touch screen 31 at that time, and a series of stroke data initially displayed is generated. A second section is generated based on the remaining one or more stroke data of (a series of stroke data acquired by the stroke data acquisition unit 60). For example, in the example of FIG. 10, when the user taps the touch button 74, the page or the like generation unit 66 has a first page (or a first section) containing eight stroke data corresponding to "123456", respectively. , Each will generate a second page (or second section) containing nine stroke data corresponding to "abcdefg".

FIG. 4 shows another example of the page generated by the page or the like generation unit 66. In this example, the first page is generated from the stroke data up to the seventh of the m stroke data included in the file # 1, and the second page is generated from the stroke data after the eighth.

As shown in FIG. 4, each page generated by the page or the like generation unit 66 is stored in the memory 35 as one file. More specifically, the eighth and subsequent stroke data are deleted from the # 1 file and saved as a new # 1 file (first file). The eighth and subsequent stroke data are stored in the newly created # 1-1 file (second file). On the other hand, when the page or the like generation unit 66 generates sections, one file is composed of a plurality of sections.

The page or the like generation unit 66 is configured to associate each of the newly created first and second pages and the like with order information indicating the order in which the pages and the like are created. This order information is specifically a time stamp. In the example of FIG. 4, the newly created file # 1-1 is associated with the time stamp information _T1n associated with the file # 1 before processing, and the file # 1 after processing is associated with the time stamp information T1n. The time slightly before the time indicated by the _{time stamp information T 1n} associated with the file # 1 before processing _{(denoted as T 1n −} α in FIG. 4) is associated. "Slightly before" indicates that the file # 1 was created before the file # 1-1, and the file created before the file # 1 (not shown). If there is, this is a device to prevent the creation time of the file from being later than the creation time of the # 1 file.

The order information associated with each file may be specifically included in the file name of each file, or may be attached to each file as metadata. According to the former, the user can easily see the order information, and according to the latter, the computer can easily handle the order information.

After the page or the like generation unit 66 creates a new page or the like, the stroke data acquisition unit 60 re-executes the acquisition of a series of stroke data. FIG. 11 shows a display example of the touch screen 31 after the user taps the touch button 74 in FIG. This display example is obtained when the stroke data acquisition unit 60 accesses a page or the like corresponding to "123456" and acquires eight stroke data included in the page or the like. Immediately after the stroke data acquisition unit 60 acquires a series of stroke data, the display unit 61 first displays the touch button 70 (FIG. 7) as described above. In FIG. 11, the touch button 70 (FIG. 7) is displayed. It shows the state after the user taps 70. In FIG. 11, since the number of stroke data being displayed is eight, the number of scales 73 displayed on the slider 71 is also eight. The process when the user slides the handle 72 or taps the touch button 74 on the screen displayed in this way is the same as described above.

In addition, the editor 34, for example, when the user taps the vicinity of the right end of the touch screen 31, the page or the like (hereinafter referred to as A) associated with the creation time one after the page or the like currently being displayed is used. By having the stroke data acquisition unit 60 acquire a series of included stroke data, the displayed page or the like is switched to A, and when the user taps the vicinity of the left end of the touch screen 31, the currently displayed page or the like 1 By having the stroke data acquisition unit 60 acquire a series of stroke data included in the page (hereinafter referred to as B) associated with the previous creation time, the displayed page or the like may be switched to B. .. By doing so, the user can check the contents of any page or the like at his / her own will.

As described above, the editor 34 causes the user to input the stroke data specific information, and corresponds to a specific page of the series of stroke data initially collectively displayed according to the input stroke data specific information. Only what should be displayed can be repeatedly and selectively displayed for confirmation. Then, it is possible to create a page or the like containing only one or more stroke data selectively displayed, and a page or the like containing only other stroke data. Further, the editor 34 does not need a barcode printed on a paper medium or an IC chip embedded in the paper medium at all in order to perform the processing, and does not need a turning detection function. Therefore, in the handwritten data drawing device 1 according to the present embodiment, handwritten data (a set of one or more stroke data) for each page is created from the handwriting written on each page of a general-purpose paper medium including a plurality of pages. However, it can be said that it is realized by software means after the fact.

Hereinafter, the processing performed by the editor 34 will be described in more detail again with reference to the processing flow of the editor 34.

FIG. 12 is a diagram showing a processing flow of the editor 34. As shown in the figure, the editor 34 receives a user's instruction to display handwritten data (step S21), and first acquires a series of stroke data from one of the pages or the like in the memory 35 (step S22). At this time, it is preferable that the page or the like for which the stroke data is acquired can be specified by the user.

Subsequently, the editor 34 draws all of the acquired series of stroke data and displays it on the touch screen 31 (step S23). After that, the user receives an instruction to shift to the page edit mode (tap of the touch button 70 illustrated in FIG. 7) (step S24). Then, when the user's instruction to shift to the page edit mode is received, the editor 34 uses the slider (slider 71, handle 72, scale 73 illustrated in FIG. 8) and the button for accepting the break position determination operation (exemplified in FIG. 8). The touch button 74) is displayed (step S25).

After that, the editor 34 acquires the current position of the slider (step S26), accepts the input of the delimiter position based on the acquired current position (step S27), and a series of series based on the input delimiter position and the writing order. A series of processes of identifying a continuous portion of the stroke data (step S28) and rewriting the display of the touch screen 31 with the specified continuous portion (step S29) are repeated until the user performs the operation of determining the division position. (Step S30). Then, when the demarcation position confirmation operation is performed, the slider and the button for accepting the delimiter position confirmation operation are deleted (step S31), and the page being displayed is specified in the last step S28 executed. While deleting the stroke data that does not belong to the continuous part, the time stamp of the page etc. is corrected to the time stamp of the time "a little before", and a new page etc. containing all the deleted stroke data is created. A time stamp (before correction) of the displayed page or the like is associated (step S31). As a result, the displayed page or the like is divided with a boundary between the delimiter position (stroke data) specified by the current position of the slider acquired in the last step S26 and the stroke data one step after the delimiter position (stroke data). It will be. After that, the processes after step S2 are repeated.

As described above, according to the handwritten data drawing device 1 according to the present embodiment, the LED lamp 5b can be slowly blinked in light green at a timing considered to be a page break, so that the handwritten data storage destination file can be stored. It is possible to prevent forgetting to press the operation button 4 for changing.

Further, according to the handwritten data drawing device 1 according to the present embodiment, the user inputs stroke data specific information to correspond to a specific page of a series of stroke data initially collectively displayed. Can be displayed selectively. That is, since one or more stroke data corresponding to a specific page can be specified by software-like means, according to the handwritten data drawing device 1 according to the present embodiment, a general-purpose paper medium including a plurality of pages can be specified. After acquiring the handwriting written on each page, it becomes possible to appropriately classify the handwritten data for each page.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and the present invention can be implemented in various embodiments without departing from the gist thereof. Of course.

For example, in the above embodiment, an example of using the linear slider 71 (FIG. 8) as the first user interface for causing the user to specify the page break has been described. For example, the circular slider 71 shown in FIG. 13 has been described. It is also possible to use a slider formed in a curved shape as in the above. Further, in the above embodiment, an example of displaying the touch button 74 as the second user interface for causing the user to perform the page break confirmation operation is displayed on the upper right of the touch screen 31, but is illustrated in FIG. 13, for example. Like the touch button 74, the placement of the second user interface is not limited to the upper right corner of the touch screen 31.

Furthermore, it is also possible to use the handle 72 of the slider 71 as the second user interface instead of the touch button 74. In this case, it is preferable that the confirmation reception unit 65 accepts the determination operation of the division position by the user continuously tapping (holding down) the handle 72 for a predetermined time.

Further, in the above embodiment, the scale 73 displayed on the slider 71 is configured to correspond one-to-one with each of the series of stroke data acquired by the stroke data acquisition unit 60, but the series of stroke data It is also possible to configure it as having a many-to-one correspondence with each of the above. By doing so, the user can distinguish each scale 73 even when the number of stroke data constituting the series of stroke data is extremely large.

In this case, it is preferable that the scale of the slider 71 can be expanded by the user pressing the handle 72 or the slider 71 for a predetermined time or longer. That is, assuming that the scale 73 displayed at the beginning when the stroke data acquisition unit 60 acquires a series of stroke data is the first scale, a series of stroke data when the user presses the handle 72 or the slider 71 for a predetermined time or longer. The number of stroke data is less than the number of stroke data, and one or more second scales correspond to each of the group of stroke data corresponding to the pressed position and its vicinity in a many-to-one or one-to-one manner. It is preferable to replace the scale of. By doing so, the user can input the delimiter position finely in stroke data units even when the number of stroke data constituting the series of stroke data is extremely large.

The above points will be specifically described with reference to FIGS. 14 and 15. FIG. 14 shows a state in which the same stroke data as in FIG. 8 is displayed on the touch screen 31, but since two stroke data are assigned to one scale 73, the number of scales 73 is the example of FIG. It is half (however, since the number of stroke data is an odd number of 17, it is exactly half + 1). Explaining the specific allocation, the illustrated scale A has "1" and "2", the scale B has the first stroke of "3" and "4", and the scale C has two strokes of "4". The first stroke of the scale and "5", the second stroke of "5" and "6" on the scale D, the first stroke of "a" and "b" on the scale E, and "" on the scale F. The second stroke and "c" of "b", the scale G has "d" and "e", the scale H has the first stroke of "f" and the second stroke of "f", and the scale I has the second stroke. "G" is assigned to each. In this case, if the user presses and holds the vicinity of the scale 73 of "E" indicated by a circle in FIG. 14, for example, the stroke data assigned to one scale 73 is reduced to, for example, one. In the example of FIG. 14, for example, the second stroke of "4" is on the scale A, the first stroke of "5" is on the scale B, the second stroke of "5" is on the scale C, and the scale D is. "6", scale E has "a", scale F has the first stroke of "b", scale G has the second stroke of "b", and scale H has "c". "D" is assigned to I, respectively. By doing so, the user can specify only the range from the second stroke of "4" to "d" as the delimiter position, and can input the delimiter position in detail in stroke data units.

Further, the slider 71 may be provided with the pointer 74 shown in FIG. 15 in addition to the handle 72 and the memory 73 described above. This point 74 is displayed in the vicinity of the slider 71 for the purpose of presenting the user a candidate position that is a candidate for the division position. The candidate position is derived by the delimiter position input receiving unit 62.

As a method of deriving the candidate position by the delimiter position input receiving unit 62, for example, two methods can be considered. The first is a method that can be used when each of the series of stroke data included in the page or the like is given a time stamp indicating the writing time, and the time stamps of the two adjacent stroke data in the writing order are used. Candidate positions are derived based on the time difference shown. According to this method, a position where it is highly probable that the page has been changed by the user because the time difference is large to some extent or more, for example, the time stamp has passed for one day or more, is set as the candidate position. It becomes possible to calculate.

The second is the displacement of one of the first and second directions (the vertical direction and the horizontal direction of the rectangular writing surface) orthogonal to each other in the writing surface between two stroke data adjacent to each other in the writing order. It is derived based on the quantity. According to this method, there is a high possibility that the user has changed the page, for example, when the handwriting jumps from the bottom to the top of one page, or when the line breaks when writing horizontally. It is possible to calculate the line feed position that should separate the section or the section as a candidate position.

It is also possible to implement the first and second user interfaces with hardware buttons. FIG. 16 illustrates such first and second user interfaces. In the handwriting data drawing device 1 shown in the figure, a square stop / confirm button B1, a right-pointing triangle forward button B2, a fast-forward button B3 in which two right-pointing triangles are connected, and a left-pointing triangle return button B4 are attached to one end of the digitizer 2. , A rewind button B5 in which two left-pointing triangles are connected is provided. All of these buttons constitute a first user interface, and button B1 also serves as a second user interface. The digitizer 2 notifies the computer 30 of the pressed state of each of the buttons B1 to B5.

When the user presses the back button B4 once, the delimiter position input receiving unit 62 specifies the stroke data in the writing order immediately before the stroke data specified by the stroke data identification information acquired last. Data specific information is acquired. On the other hand, when the user presses the advance button B2 once, the delimiter position input receiving unit 62 specifies the stroke data in the writing order one after the stroke data specified by the stroke data identification information acquired last. Stroke data specific information to be performed is acquired. The fast-forward button B3 and the rewind button B5 are buttons for automatically producing the same effect as when the forward button B2 and the back button B4 are continuously pressed (fast-forward, rewind), respectively. Fast forward and rewind are stopped by pressing the stop / confirm button B1 during the execution. When the user presses the stop / confirm button B1 while fast forward and rewind are not being executed, the confirmation reception unit 65 accepts the page break confirmation operation. Since the buttons B1 to B5 each have the above-mentioned roles, the handwritten data drawing device 1 of FIG. 16 can create handwritten data for each page in the same manner as the handwritten data drawing device 1 described in the above embodiment. It becomes.

Further, in the above embodiment, the continuous portion specifying unit 63 specifies the first portion including the break position corresponding stroke data as the continuous portion, but the second portion not including the break position corresponding stroke data is specified. It may be specified as a continuous part. Further, although the stroke data written at the earliest is included in the first part, the stroke data written last may be included in the first part.

Further, in the above embodiment, the LED lamp 5a is amber and the LED lamp 5b is green or light green, but this is an example, and the actual colors of the LED lamps 5a and 5b are arbitrary. It is preferable that the colors of the LED lamps 5a and 5b are appropriately determined in consideration of ergonomics so as to give an appropriate impact to the user. The same applies to the lighting state and blinking method of the LED lamps 5a and 5b. Further, in consideration of a visually impaired user, the same notification may be given by sound, vibration, or the like in place of the LED lamps 5a and 5b, or together with the LED lamps 5a and 5b.

Further, in the above embodiment, the LED lamp is used as the notification means having the notification function to the user, but instead of the LED lamp or together with the LED lamp, the notification means is "sound" or "blinking of the icon on the tablet screen". It is also possible to use it as an LED.

Further, in the above embodiment, an example of using the position detection device by the EMR method has been described, but in the present invention, a signal is sent from an indicator equipped with a battery such as an AES (Active ElectroStatic) method to the position detector. It is also suitably applicable to a transmission type position detection device.

1 Handwritten data drawing device 2 Digitizer 2a Surface of digitizer 2 2b Touch sensor 3 Clip 4 Operation buttons 5a, 5b LED lamp 10 Electronic pen 10a Pen tip 10b, 10c Side switch 11 Capacitor 12 inductor 20 Sensor controller 21 Input / output unit 22 Wireless communication Part 23 Memory 30 Computer 31 Touch screen 32 Operation button 32 Wireless communication part 33 Stroke builder 34 Editor 35 Memory 40 Notebook type cover 50 Selection circuit 51 Switch circuit 52 Amplifier 53 Detection circuit 54 Low pass filter 55 Sample hold circuit 56 Analog-to-digital conversion circuit 57 Control unit 58 Oscillator 59 Current driver 60 Stroke data acquisition unit 61 Display unit 62 Separation position input reception unit 63 Continuous part identification unit 64 Redisplay unit 65 Confirmation reception unit 66 Page etc. Generation unit 70, 74 Touch button 71 Slider 72 Handle 73 Scale (Ticks)
B1 Stop / Confirm button B2 Forward button B3 Fast forward button B4 Back button B5 Rewind button G1, G2 Stroke data group LC Loop coil P Report paper

Claims (15)

The computer
Based on detecting the position indicated by the indicator, a third handwritten data including the first and second handwritten data is generated.
The third handwritten data is stored in the first file,
The first and second handwritten data included in the third handwritten data are displayed on the display unit, and the display unit is displayed.
From the first display state in which the first handwritten data and the second handwritten data are displayed on the display unit, the first handwritten data is displayed on the display unit and the second handwritten data is displayed. The display of the display unit is controlled to a second display state that is not displayed on the display unit.
Based on a predetermined operation, the second handwritten data that is not displayed on the display unit in the second display state is deleted from the first file, and is displayed on the display unit in the second display state. The second handwritten data that is not displayed is stored in a second file different from the first file.
A method characterized by that. The computer
A slider and a handle configured to move the slider are displayed on the display unit.
It is configured to control the display of the display unit from the first display state to the second display state based on the position of the handle on the slider.
The method according to claim 1. The slider has one or more scales that correspond one-to-one with each of the series of stroke data constituting the third handwritten data.
The method according to claim 2 , wherein the method is characterized by the above. The handle is configured to move to a position corresponding to each of the one or more scales and not stop elsewhere on the slider.
The method according to claim 3 , wherein the method is characterized by the above. Based on the predetermined operation, the computer has one or more one-to-one correspondences with each of a series of stroke data constituting the first handwritten data displayed on the display unit in the second display state. A slider having a scale is displayed on the display unit.
The method according to claim 2 , wherein the method is characterized by the above. On the computer
A function to generate a third handwritten data including the first and second handwritten data based on the detection of the position indicated by the indicator.
A function of storing the third handwritten data in the first file,
A function of displaying the first and second handwritten data included in the third handwritten data on the display unit based on the first file.
From the first display state in which the first handwritten data and the second handwritten data are displayed on the display unit, the first handwritten data is displayed on the display unit and the second handwritten data is displayed. A function for controlling the display of the display unit in a second display state that is not displayed on the display unit.
Based on a predetermined operation, the second handwritten data that is not displayed on the display unit in the second display state is deleted from the first file, and is displayed on the display unit in the second display state. A program that realizes a function of storing the second handwritten data that is not displayed in a second file different from the first file. On the computer
A function of displaying a slider and a handle configured to move the slider on the display unit,
A function of controlling the display of the display unit from the first display state to the second display state based on the position of the handle on the slider is realized.
The program according to claim 6 , wherein the program is characterized by the above. The slider has one or more scales that correspond one-to-one with each of the series of stroke data constituting the third handwritten data.
The program according to claim 7. The handle is configured to move to a position corresponding to each of the one or more scales and not stop elsewhere on the slider.
8. The program according to claim 8. On the computer
A slider having one or more scales corresponding to each of a series of stroke data constituting the first handwritten data displayed on the display unit in the second display state based on the predetermined operation. To realize the function of displaying on the display unit,
7. The program according to claim 7. A handwritten data generation means for generating a third handwritten data including the first and second handwritten data based on detecting the position indicated by the indicator.
A first storage means for storing the third handwritten data in the first file, and
A display means for displaying the first and second handwritten data included in the third handwritten data on the display unit based on the first file, and
From the first display state in which the first handwritten data and the second handwritten data are displayed on the display unit, the first handwritten data is displayed on the display unit and the second handwritten data is displayed. A display state control means for controlling the display of the display unit in a second display state that is not displayed on the display unit, and
Based on a predetermined operation, the second handwritten data that is not displayed on the display unit in the second display state is deleted from the first file, and is displayed on the display unit in the second display state. A second storage means for controlling the second handwritten data that is not displayed to be stored in a second file different from the first file, and
Have,
A computer that features that. The display state control means is
A slider and a handle configured to move the slider are displayed on the display unit.
It is configured to control the display of the display unit from the first display state to the second display state based on the position of the handle on the slider.
The computer according to claim 11. The slider has one or more scales that correspond one-to-one with each of the series of stroke data constituting the third handwritten data.
The computer according to claim 12. The handle is configured to move to a position corresponding to each of the one or more scales and not stop elsewhere on the slider.
13. The computer according to claim 13. The display state control means has a one-to-one correspondence with each of a series of stroke data constituting the first handwritten data displayed on the display unit in the second display state based on the predetermined operation. A slider having one or more scales is displayed on the display unit.
12. The computer according to claim 12.

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