JP2009157420A - Terminal apparatus and its program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal apparatus capable of displaying the partial image of an image to be displayed by automatic scrolling in response to an optionally set route. <P>SOLUTION: Entry information corresponding to a stroke S from pen-down to pen-up, which is drawn on exclusive paper 2 with a coded pattern printed thereon, is generated with an electronic pen 1 and transmitted to the terminal apparatus 3, and then, the partial image of the image to be displayed is displayed on the display of the terminal apparatus 3, based on the received entry information. In this case, the size of the exclusive paper 2 is previously made to correspond to the size of the image to be displayed with the use of reduction scale information, thereby enlarging the stroke S drawn on the exclusive paper 2 so as to be a stroke route Sa on the image to be displayed. Then, the partial image is displayed so as to allow the start point of the stroke route Sa to be positioned inward for the portion of a prescribed distance from the upper left end of the display frame D on the display. In this state, the intersection of the stroke with the display frame D on the display is obtained, and the partial image is made to slid to allow the stroke to pass the intersection. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention belongs to the technical field of displaying a partial image of a display target image on a display based on a stroke drawn on dedicated paper with an electronic pen or a scanner.

  In recent years, pen-type input devices called “electronic pens”, “digital pens” and the like have appeared (hereinafter referred to as “electronic pens” in this specification), and a representative example thereof is Anoto (Anoto, Sweden). "Anoto pen" developed by the company is known (see Patent Document 1). This anotopen is used with special paper on which a predetermined dot pattern is printed. In addition to the usual ink-type pen tip, the anotopen has a small camera for reading the dot pattern on the special paper and a data communication unit. It is installed.

  When a user writes characters on the special paper with an annotation pen, or puts a check mark on the image designed on the special paper, the small camera displays the dot pattern printed on the special paper as the pen moves. Entry information such as characters and images detected and written by the user is acquired. This entry information is transmitted from the Anotopen by the data communication unit to a terminal device such as a nearby personal computer or mobile phone.

  The system using this anotopen can be used as an input device in place of the keyboard, and is very easy to use for users who are reluctant to use the personal computer and keyboard described above. Therefore, currently, a system using an electronic pen is becoming widespread as a method for digitizing data entered in various business documents, application forms, contracts, and the like (see, for example, Patent Document 2).

  On the other hand, as a screen scrolling method for a stylus, when a user taps on the stylus with an electronic pen after drawing a stroke, the stroke method moves in parallel to the tapped point with the point closest to the present in time series as the drawn stroke. Alternatively, a stroke method is known in which, when a stroke is drawn, two points on the stylus are tapped with an electronic pen, and the drawn stroke is translated by a vector amount between the two points (for example, Patent Document 3).

Japanese translation of PCT publication No. 2003-511761 JP 2004-153612 A JP-A-6-149464

  When using an electronic pen such as that found in the above Anoto technology, characters and designs are entered on a special paper on which a predetermined dot pattern is printed, and the characters and designs corresponding to the entered information are sent to the terminal device. Can be displayed on the display. However, when the paper size is larger than the display screen size of the terminal device, there is a problem that the entire written stroke may not be displayed.

  As a method for controlling the display position of such a stroke, for example, Japanese Patent Laid-Open No. 6-149464 (Patent Document 3) discloses a method of translating a stroke by a vector amount between two points tapped with an electronic pen. It is disclosed. However, in the method described in Patent Document 3, the scrolling performed by tapping two points with the electronic pen to move the entered stroke is a linear image movement between the two points, and a complicated path is taken. I couldn't scroll.

  The present invention has been made in view of such problems, and an object of the present invention is to automatically scroll and display a partial image of a display target image according to an arbitrarily set route. It is providing the terminal device which has this, and its program.

  A terminal device according to the present invention is a terminal device that receives entry information generated and transmitted by an electronic pen or scanner in response to a stroke drawn by the electronic pen or scanner on a dedicated paper on which a coded pattern is printed. Receiving means for receiving entry information, and processing means for displaying a partial image of the image while moving the display target image on the display corresponding to the path of the stroke based on the received entry information. And

  According to this terminal device, when a user draws a stroke on a dedicated paper with an electronic pen or a scanner, entry information is transmitted to the terminal device by the electronic pen or the scanner, and the terminal device receives the information from the electronic pen or the scanner by the receiving means. The sent entry information is received, and the processing means displays a partial image of the image while moving the display target image on the display corresponding to the stroke path based on the received entry information. Therefore, if an arbitrary path is drawn with a stroke on the dedicated paper, the partial image can be displayed on the display while moving the display target image according to the stroke path.

  In this terminal device, the processing means displays the partial image so that the start point of the stroke path is located within the display frame of the display, and in this state, obtains the intersection of the stroke path and the display frame of the display, and determines the intersection as the stroke. The partial image may be slid so that the route passes. Accordingly, the partial image can be displayed by moving the display target image along the stroke path.

  In addition, the program according to the present invention is provided in a terminal device that receives entry information generated and transmitted by an electronic pen or scanner corresponding to a stroke drawn by an electronic pen or scanner on a dedicated paper on which a coded pattern is printed. , Receiving means for receiving entry information, and functioning as processing means for displaying a partial image of the image while moving the display target image on the display corresponding to the stroke path based on the received entry information .

  In the above program, the processing means displays the partial image so that the starting point of the stroke path is located within the display frame of the display, and in this state, obtains the intersection of the stroke path and the display frame of the display, and determines the intersection as the stroke. The partial image may be slid so that the route passes.

  With this program, the terminal device according to the present invention can be configured.

  According to the terminal device and the program thereof according to the present invention, when the size of the display target image is larger than the display size, the partial image is automatically scrolled and displayed based on the stroke information entered on the dedicated paper. The display target image can be efficiently displayed without performing a pen operation.

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

[System configuration of image display system]
FIG. 1 shows a system configuration diagram of an image display system 4 using the terminal device 3 of the present embodiment. As shown in FIG. 1, in this image display system 4, when a stroke (handwriting from pen down to pen up) is drawn on the dedicated paper 2 with the electronic pen 1, the terminal device 3 displays a display target image on the display. The partial image is scroll-displayed. A dot pattern (coded pattern) is printed on the dedicated paper 2 used here. Further, the electronic pen 1 includes a pen tip portion 6 similar to a normal ink pen, and when the user writes a stroke on the dedicated paper 2 by the pen tip portion 6 in the same manner as a normal ink pen, the electronic pen 1 The dot pattern printed on the dedicated paper 2 is read locally and continuously along the trajectory (handwriting) of the pen tip 6 and the coordinates of the local position on the dedicated paper 2 are calculated. At the same time, the electronic pen identification ID for identifying the electronic pen 1 and the written time information (time stamp) are associated with each other.

[Special paper]
First, the dedicated paper 2 used in the image display system 4 will be described. The special paper 2 is obtained by printing a dot pattern on the paper and further reducing the picture A as a display target image on the paper (refer to FIG. 7: illustration of the special paper 2 is omitted). The dot pattern is printed with ink containing carbon that absorbs infrared rays. In addition, the design of the picture A that has been reduced-printed is printed with ordinary ink that does not contain carbon. These dot patterns and designs may be printed on the paper at the same time, or one of them may be printed first.

[Dot pattern]
Next, the dot pattern printed on the dedicated paper 2 will be described. The dot pattern read by the electronic pen 1 employs the above-mentioned Anoto technology. FIG. 2 is a diagram illustrating the relationship between the dot position of the dot pattern printed on the dedicated paper 2 and the value to which the dot is converted. As shown in FIG. 2, each dot of the dot pattern is associated with a predetermined value depending on its position. That is, each dot is associated with a value of 0 to 3 depending on the direction in which the position of the dot is shifted from the reference position of the grid (intersection of vertical and horizontal lines: grid point). The value of each dot is further converted into a first bit value for the X coordinate and a second bit value for the Y coordinate. The dot pattern is configured such that the position coordinates on the dedicated paper 2 are determined by the combination of information thus associated.

  FIG. 3A shows an arrangement of dot patterns in a certain local portion on the dedicated paper 2. As shown in FIG. 3 (a), 6 × 6 dots are arranged within a range of about 2 mm in length and width so that a unique pattern can be obtained no matter where 6 × 6 dots are taken from any part of the dedicated paper 2. ing. The dot pattern formed by these 36 (= 6 × 6) dots holds the position coordinates (for example, where the dot pattern is located on the dedicated paper 2). FIG. 3B is a diagram in which each dot shown in FIG. 3A is converted into a value associated with the regularity shown in FIG. 2 according to the shift direction from the reference position of the lattice. This conversion is performed by the electronic pen 1 that captures an image of a dot pattern.

[Electronic pen]
Next, the electronic pen 1 will be described. As shown in FIG. 4, the electronic pen 1 includes a processor 8, a memory 9, a speaker 10, a data communication unit 11, a battery 12, an LED 13, a CMOS camera 14, a clock 15, a pressure sensor 16, and a housing 7. And an ink cartridge 17. The tip of the ink cartridge 17 is a pen tip portion 6, and the user can draw a stroke or the like while bringing the pen tip portion 6 of the electronic pen 1 into contact with the special paper 2.

  The LED 13 and the CMOS camera 14 are attached in the vicinity of the pen tip portion 6 of the electronic pen 1, and an opening 18 is formed in a portion of the housing 7 facing the LED 13 and the CMOS camera 14. The LED 13 illuminates infrared rays toward the vicinity of the pen tip portion 6 on the dedicated paper 2 (region 19: see FIG. 1). The region 19 is slightly deviated from the position where the pen tip portion 6 contacts the special paper 2. The CMOS camera 14 captures a dot pattern in the area 19 illuminated by the LED 13 and supplies image data of the dot pattern to the processor 8.

  Here, since carbon absorbs infrared rays, the infrared rays irradiated by the LED 13 are absorbed by the carbon contained in the dots. Therefore, the dot portion has a small amount of infrared reflection, and the portion other than the dot has a large amount of infrared reflection. Therefore, by taking a picture with the CMOS camera 14, by setting a threshold value based on the difference in the amount of reflected infrared light, it is possible to distinguish the dot region containing carbon from the other regions. Even if the design of the painting A is printed in the shooting region, the ink of the design does not contain carbon, so that the dot pattern can be recognized. Note that the shooting area by the CMOS camera 14 is a range including a size of about 2 mm × about 2 mm as shown in FIG. 3A, and the CMOS camera 14 is shot 75 times per second.

  The battery 12 is for supplying electric power to each component in the electronic pen 1. For example, the battery 12 is configured to turn on / off the electronic pen 1 itself by removing a cap (not shown) of the electronic pen 1. May be. The pressure sensor 16 detects the pressure applied to the pen tip 6 when the user writes characters or the like on the dedicated paper 2 with the electronic pen 1, that is, the writing pressure, and supplies the detected pressure to the processor 8.

  The processor 8 switches on / off the switches of the LED 13 and the CMOS camera 14 based on the writing pressure data supplied from the pressure sensor 16. That is, when a user writes characters or the like on the special paper 2 with the electronic pen 1, the pen tip portion 6 is applied with a writing pressure, and when the pressure sensor 16 detects a writing pressure exceeding a predetermined value, the processor 8. Determines that the user has started entry and activates the LED 13 and the CMOS camera 14.

  While the user's entry is performed, the processor 8 determines the position coordinates (simply “coordinates”) of the X and Y coordinates on the dedicated paper 20 of the stroke to be entered by the user from the dot pattern of the image data supplied by the CMOS camera 14. Data is also calculated continuously. That is, the processor 8 converts the dot pattern image data supplied by the CMOS camera 14 as shown in FIG. 3A into the data array shown in FIG. The coordinate bit value and the Y coordinate bit value are converted, and X and Y coordinate data are calculated from the data array by a predetermined calculation method. The processor 8 calculates the dot pattern address set for each page or type of the dedicated paper 2 from the dot pattern arrangement. Then, the processor 8 associates the current time (time stamp) transmitted from the clock 15, the pen pressure data, and the X and Y coordinate data. Since the 6 × 6 dot pattern on the dedicated paper 2 does not overlap within the dedicated paper 2, when the user fills in the necessary items with the electronic pen 1, It can be specified by the coordinate calculation by the processor 8 whether it corresponds to the position.

  An electronic pen identification ID for identifying the electronic pen 1 is stored in the memory 9, and coordinate data calculated by the processor 8 is arranged and stored in time series along with time information (time stamp). Go. The speaker 10 outputs the content instructed by the processor 8 by voice.

  Then, the data communication unit 11 associates the electronic pen identification information, time information (time stamp), writing pressure data, dot pattern address, and X and Y coordinate data, and transmits them to the terminal device 3 as entry information. To do. Transmission by the data communication unit 11 is immediately and sequentially performed toward the terminal device 3 by Bluetooth (registered trademark) wireless transmission.

[Configuration of terminal device]
Next, the terminal device 3 will be described with reference to FIG. FIG. 5 is a functional block diagram of the terminal device 3. As shown in the figure, the terminal device 3 functionally includes a receiving means 31 including an antenna device and a receiving circuit capable of data communication with the electronic pen 1, a storage means 32 including a memory such as a ROM, a RAM, and a hard disk, a CPU, and the like. A processing unit 33 including a processor, a display unit 34 including a display, an input unit 35 such as a mouse or a keyboard, a clock 36 for transmitting the current time, and a personal computer including a transmission unit 37. Then, the terminal device 3 performs a predetermined process by executing a dedicated application using the entry information received from the electronic pen 1.

[Dedicated application]
Next, the dedicated application (program) 40 installed in the terminal device 3 will be described with reference to FIG. FIG. 6 shows a module configuration of the dedicated application 40. As illustrated in FIG. 6, the dedicated application 40 includes a reception module 41, a storage module 42, and a processing module 43.

  The reception module 41 has a function of causing the reception unit 31 to receive entry information created by a specific protocol transmitted from each electronic pen 1. The reception unit 31 is received by the terminal device 3 by an antenna, a reception circuit, or the like. Is a module that configures

  The storage module 42 corresponds to the dot pattern address on the dedicated paper 2 and displays image data, window information, various setting information for displaying the painting A, which is the display target image, on the display means 34, and the dots on the dedicated paper 2. This is a module that retains the correspondence between the pattern address and the scale information of the dedicated paper 2 for the display target image and stores it in the storage means 32, or stores the entry information acquired from the electronic pen 1 in a predetermined format. This is a module that configures the storage means 32 in the terminal device 3.

  The processing module 43 has a function of causing the display unit 34 to display a display target image while scrolling based on strokes drawn on the dedicated paper 2 in various forms. This module constitutes the means 33.

[Display processing function of terminal device by execution of dedicated application]
The process performed by the dedicated application 40 installed in the terminal device 3 automatically scrolls the partial image of the display target image on the display of the display unit 34 based on a stroke arbitrarily drawn by the user with the electronic pen 1. It is a process to display. An outline of processing performed by the terminal device 3 by executing the dedicated application 40 will be described with reference to FIGS.

  FIG. 7 is a diagram showing a picture A that is a display target image and a dedicated paper 2 corresponding thereto. As shown in FIG. 7, the size of the dedicated paper 2 is smaller than that of the painting A, and the size of the dedicated paper 2 and the size of the painting A are previously associated with each other by the scale information. It is stored in the storage means 32 of the terminal device 3 in association with the pattern address and the image data of the painting A. The picture A is assumed to have a size L larger than the display frame D of the display of the terminal device 3, and the special paper 2 having a size smaller than the picture A is used.

  FIG. 8 is a diagram illustrating a stroke S drawn on the dedicated paper 2, a display frame D for displaying the painting A which is a display target image on the display, and a stroke path Sa on the display target image corresponding to the stroke S. . As shown in FIG. 8, before the scrolling is started, the processing means 33 sets the initial position of the picture A displayed on the display to an area near the upper left of the picture A. In this state, a stroke S (line segment drawn from pen down to pen up) is written on the dedicated paper 2 with the electronic pen 1, and the entry information of the stroke S from the electronic pen 1 to the terminal device 3 via Bluetooth (registered) When wirelessly transmitted by the trademark method, in the terminal device 3, the receiving means 31 receives the entry information and transmits the entry information to the processing means 33. The processing unit 33 stores the received entry information in the storage unit 31, reads scale information associated with the dot pattern address in the entry information from the storage unit 32, and the painting A of the stroke S drawn on the dedicated paper 2. The stroke path Sa serving as the corresponding position above is calculated.

  Then, as shown in FIG. 9, the processing means 33 displays the partial image so that the starting point of the stroke path Sa is positioned at the inner coordinates of (X1, Y1) from the upper left end of the display frame D of the display. And the processing means 33 calculates | requires the intersection T of the stroke path | route Sa and the display frame D of a display in this state.

  Further, as shown in FIGS. 10A to 10C, the processing means 33 slides the partial image so that the stroke path Sa passes through the intersection T between the stroke path Sa and the display frame D of the display. When the end point of the stroke path Sa reaches the intersection point T, the sliding of the partial image is finished. In this way, the partial image of the painting A displayed on the display of the display means 34 is automatically scrolled by the terminal device 3 in which the dedicated application 40 is installed.

[Processing flow of display by image display system]
Next, processing performed by the image display system 4 of the present embodiment will be described with reference to the flowchart of FIG.

  The electronic pen 1 draws a stroke by the user pen downing the electronic pen 1 onto the dedicated paper 2, generates entry information corresponding to the stroke, and transmits it to the terminal device 3 until the pen is up. . That is, when the user touches the pen tip 6 of the electronic pen 1 to the dedicated paper 2 (pen down) to draw a stroke, the electronic pen 1 detects a writing pressure of a predetermined value or more by the pressure sensor 16. Thus, contact with the dedicated paper 2 is detected (step S11), the dot pattern is imaged with the CMOS camera 14 while irradiating infrared rays with the LED 13, and the image data of the imaged dot pattern is transferred to the dedicated paper 2 with the processor 8. The coordinate data and dot pattern address at the contact position are calculated. The processor 8 generates entry information in which the dot pattern address, the coordinate data, the writing pressure data, and the current time display (time stamp) are associated, and transmits the entry information to the terminal device 3 via the data communication unit 11. (Step S12).

  As described above, the electronic pen 1 continues to generate entry information of the stroke S and continues to transmit it to the terminal device 3 while the user continues to draw the stroke S on the dedicated paper 2. When the user removes (pens up) the electronic pen 1 from the dedicated paper 2, the processor 8 recognizes that the writing pressure detected by the pressure sensor 16 is less than a predetermined value (step S13). The transmission to the terminal device 3 is interrupted. If the user continues to touch (pen down) to draw the next stroke for automatic scrolling (step S14; Yes), the process of generating the stroke entry information again and sending it to the terminal device 3 (Step S12) is repeated. On the other hand, when the user does not draw a stroke with the electronic pen 1, pen down is not detected (step S <b> 14; No), and transmission of entry information from the electronic pen 1 to the terminal device 3 is stopped as it is. become.

  In the terminal device 3, the processing unit 33 activates a dedicated application, reads the window information and various setting information stored in the storage unit 32, and displays a partial image of the painting A corresponding to the stroke drawn on the dedicated paper 2. An initial state that can be displayed on the display means 34, that is, an area near the upper left of the painting A is displayed as shown in FIG. 8 (step S15).

  In this state, when the terminal device 3 receives the entry information transmitted by the electronic pen 1 by the receiving means 31 (step S16), the processing means 33 stores the received entry information in the storage means 32 and also the painting. An automatic scroll process for continuously displaying the partial image A along the stroke path Sa is performed (step S17).

  That is, the processing unit 33 extracts the dot pattern address from the entry information, reads out the scale information associated with the dot pattern address from the storage unit 32, and loads the dedicated paper 2 on the basis of the coordinate data and the scale information of the entry information. A stroke path Sa that is a corresponding position of the drawn stroke S on the picture A is calculated. Then, as shown in FIG. 9, the processing unit 33 displays the partial image so that the start point of the stroke path Sa is positioned at the inner coordinates of (X1, Y1) from the upper left end of the display frame D of the display, The intersection T between the stroke path Sa and the display frame D of the display is obtained. Further, as shown in FIGS. 10A to 10C, the processing unit 33 performs the intersection T between the stroke path Sa and the display frame D of the display. The partial image is slid so that the stroke path Sa passes, and the sliding of the partial image is finished when the end point of the stroke path Sa reaches the intersection T.

  Then, the processing means 33 determines whether or not the application has been terminated by the user (step S18). If no termination operation has been detected (step S18; No), the process returns to step S16. It will be in a standby state for receiving entry information. On the other hand, when detecting the end operation by the user (step S18; Yes), the processing unit 33 ends the automatic scrolling application.

[Operational effects of this embodiment]
According to the image display system 4 using the terminal device 3, when the user draws a stroke S of an arbitrary shape on the dedicated paper 2 with the electronic pen 1, the electronic pen 1 displays the position coordinates of the drawn stroke S. Calculation is performed at a predetermined interval, entry information including the position coordinates is generated, and the entry information is immediately and sequentially transmitted to the terminal device 3. And the terminal device 3 acquires entry information from the electronic pen 1, and the starting point of the stroke path Sa enlarged on the picture A based on the entry information is from the upper left end of the display frame D of the display (X1, Y1). By displaying the partial image so as to be located only inside, obtaining the intersection T of the stroke path Sa and the display frame D of the display in this state, and sliding the partial image so that the stroke path Sa passes through the intersection T, A partial image of the painting A is automatically scrolled and displayed along the stroke S. Therefore, the user can display the stroke A by drawing the stroke S with the electronic pen 1 along the area to be enlarged and displayed on the display of the terminal device 3 on the dedicated paper 2 on which the picture A is reduced and printed. The desired area can be viewed on the display of the terminal device 3.

[Other Embodiments]
The present invention is not limited to the above embodiment.

  In the above embodiment, the electronic pen 1 is used as a device for drawing characters and patterns on the dedicated paper 2, but a pen-type scanner without an ink cartridge may be used. In addition, the display target image is not limited to a painting, and may be an image of animals or plants, a map, or the like. When the processing means 33 receives and processes the entry information of the next stroke S while the display means 34 is scrolling the display, the processing means 33 stops the scrolling display at the present stage and immediately Scroll display along the stroke path Sa corresponding to the next stroke S may be started.

1 is a system configuration diagram of an image display system according to an embodiment of the present invention. It is explanatory drawing of the expression method of the information by the dot pattern printed on the exclusive paper. (A) shows a dot pattern typically and (b) is an explanatory view showing an example of information corresponding to it. It is explanatory drawing which shows typically the electronic pen shown in FIG. It is a functional block diagram of the terminal device shown in FIG. It is a module block diagram of the exclusive application in a terminal device. It is explanatory drawing which shows a display object image and the dedicated paper corresponding to it. It is explanatory drawing which shows the relationship between the stroke drawn on the exclusive paper, and the corresponding stroke on a display target image. It is explanatory drawing which shows the state which displayed the partial image so that the starting point of a stroke may be located inside predetermined distance from the upper left end of the display frame of a display. It is explanatory drawing which shows a mode that the partial image of a display target image is automatically scrolled and displayed on a display. It is a flowchart which shows the display display process performed with the image display system of embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Electronic pen, 2 ... Exclusive paper, 3 ... Terminal device, 4 ... Image display system, 6 ... Pen tip part, 7 ... Case, 8 ... Processor, 9 ... Memory, 10 ... Speaker, 11 ... Data communication unit, DESCRIPTION OF SYMBOLS 12 ... Battery, 13 ... LED, 14 ... CMOS camera, 15 ... Clock, 16 ... Pressure sensor, 17 ... Ink cartridge, 18 ... Opening part, 19 ... Area | region, 31 ... Receiving means, 32 ... Memory | storage means, 33 ... Processing means 34 ... display means, 35 ... input means, 36 ... clock, 37 ... transmission means, 40 ... dedicated application (program), 41 ... reception module, 42 ... storage module, 43 ... processing module, A ... painting, D ... display Display frame, S ... stroke, Sa ... stroke path, T ... intersection.

Claims (4)

A terminal device for receiving entry information generated and transmitted by an electronic pen or scanner in response to a stroke drawn by an electronic pen or scanner on dedicated paper on which a coded pattern is printed,
Receiving means for receiving the entry information;
A terminal device comprising: processing means for displaying a partial image of the image while moving the display target image on the display corresponding to a stroke path based on the received entry information.   The processing means displays the partial image so that the starting point of the stroke path is located within the display frame of the display, and in this state, obtains the intersection of the stroke path and the display frame of the display, and the stroke path passes through the intersection. The terminal device according to claim 1, wherein the partial image is slid. To a terminal device that receives entry information generated and transmitted by an electronic pen or scanner in response to a stroke drawn by an electronic pen or scanner on dedicated paper on which a coded pattern is printed,
A receiving means for receiving the entry information;
A program that functions as a processing unit that displays a partial image of an image to be displayed on a display while moving the display target image in accordance with a stroke path based on the received entry information.   The processing means displays a partial image so that the starting point of the stroke path is located within the display frame of the display, and in this state, obtains the intersection of the stroke path and the display frame of the display, and the stroke path passes through the intersection. The program according to claim 3, wherein the partial image is slid.

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