JP5120291B2 - Stroke playback device and program - Google Patents

Description

  The present invention relates to a stroke reproducing apparatus that receives and processes information from an electronic pen.

  In recent years, electronic pens that digitize written information have been developed, and “Anoto pen” developed by Swedish company Anoto is known as a representative example. Anotopen is used with dedicated paper on which a predetermined dot pattern is printed. In addition to the usual ink cartridge for writing characters, etc., the anotopen has a small camera for capturing the dot pattern printed on the dedicated paper and the position coordinates on the dedicated paper from the captured dot pattern. A processor for calculating and a data communication unit for transmitting the calculated position coordinates and the like to an external device are mounted. When the user writes characters on the special paper with an anotopen or puts a check mark on the image designed on the special paper, the small camera captures the dot pattern printed on the special paper as the pen moves. The entry information such as characters and images written by the user is recognized from the continuous position coordinates calculated by the processor. Then, this entry information is transmitted from the Anotopen by the data communication unit to a nearby terminal device such as a personal computer or a mobile phone (for example, see Patent Document 1).

  Patent Document 2 records the answering process by a student of a problem received by a student unit (personal computer) in a distance learning as a moving image file, and this moving image file is instructed via an instructor unit (personal computer). ) And the correspondence education system that the instructor can replay is described, and a graph that visualizes the student's writing status is displayed on the display, and this is used to reproduce only the time zone in which there is writing A method has been proposed.

Japanese translation of PCT publication No. 2003-511761 JP 2004-145247 A

  In the prior art, when there is a part to be confirmed with special attention in a moving image file to be played back, it is not convenient because it is necessary to change the playback speed during playback. Therefore, according to the present invention, it is possible to set the playback speed of the stroke in the specified range in advance without changing the playback speed during playback of the entry information. Provided is a stroke reproduction device capable of automatically changing a reproduction speed.

  In one aspect of the present invention, a stroke reproduction device that reproduces and displays a handwritten stroke on a display unit is designated by a range designation unit that designates an arbitrary range on the screen of the display unit and the range designation unit. A reproduction speed setting means for setting the reproduction speed of the handwritten stroke in the selected range, and the handwritten stroke in the range designated by the range designation means is reproduced on the display means by the reproduction speed set by the reproduction speed setting means. Processing means.

  In the above stroke reproducing apparatus, the processing means reproduces and displays the handwritten stroke entered by the user on the display means. At this time, if the viewer preliminarily designates an arbitrary range by the range designation means and sets the reproduction speed by the reproduction speed setting means, the processing means sets the reproduction speed at which the stroke within the designated range is set. Play with. Thus, for example, the viewer designates a range to be confirmed with particular care and sets a playback speed within the range, so that the viewer does not have to change the playback speed during playback of the stroke. The stroke of the designated range can be analyzed without being distracted by the operation at the set stroke reproduction speed of the designated range, and convenience is improved.

  In one aspect of the above-described stroke reproduction device, the reproduction speed setting means can set the reproduction speeds of the handwritten stroke inside the range designated by the range designation means and the handwritten stroke outside the designated range. is there. In this way, the viewer, for example, sets the playback speed outside the specified range to be faster than the initial setting, quickly follows the entire entry process, and makes the playback speed of the specified range slower than the initial setting. This makes it possible to analyze only the range that you want to check with special care and improve efficiency.

  The stroke reproduction apparatus further includes stroke display setting means for setting a display color or display thickness of a handwritten stroke in the range specified by the range specifying means, and the processing means includes the stroke display setting means. The handwriting stroke in the range designated by the range designation means may be reproduced by the display means in accordance with the display color or thickness set by. Thereby, in the range designated in advance by the range designation means, the stroke can be displayed by the display color or thickness set by the stroke display setting means, and the stroke can be easily recognized by the viewer. .

  In another aspect of the present invention, a program executed by a stroke reproduction device that reproduces and displays a handwritten stroke on a display unit includes a range designation unit that designates an arbitrary range on the screen of the display unit, and the range designation Reproduction speed setting means for setting the reproduction speed of the handwritten stroke in the range designated by the means, and the handwritten stroke in the range designated by the range designation means according to the reproduction speed set by the reproduction speed setting means The stroke reproducing apparatus is caused to function as processing means for causing the means to reproduce.

  In one aspect of the program, the playback speed setting unit is configured to be able to set the playback speeds of the handwritten stroke inside the range specified by the range specifying unit and the handwritten stroke outside the specified range. Good.

  Further, in the above program, the program is executed by a stroke reproduction device further comprising stroke display setting means for setting the display color or display thickness of the handwritten stroke in the range specified by the range specifying means, The processing means may be configured to cause the display means to reproduce the handwritten stroke in the range specified by the range specifying means according to the display color or thickness set by the stroke display setting means.

  By executing these programs, the above-described stroke reproduction device can be realized.

  According to the present invention, it is possible to designate a range in advance and set the playback speed of the stroke in the range, and it is possible to play back the stroke in the arbitrarily designated range at the set playback speed.

It is a system configuration figure of a stroke reproduction system in this embodiment. It is explanatory drawing which shows the relationship between the arrangement | positioning of the dot in a dot pattern, and the value converted. (A) shows a dot pattern typically, and (b) is a figure showing an example of information corresponding to it. It is the schematic which shows the structure of an electronic pen. It is a functional block diagram of a stroke reproducing device. It is an example which displayed the contents of entry of electronic pen 1A with the drawing application. It is an example of a reproduction controller. It is an example of a designated range setting screen. It is an example which displayed the entry content of the electronic pen 1B with the drawing application. It is an example of the drawing application which displayed the entry content of the electronic pen 1A and the electronic pen 1B simultaneously. It is an example of a display at a certain time of the drawing application which is playing back the entry contents of the electronic pen 1A. It is an example of a drawing application when the designated range 505A is designated as the entry content of the electronic pen 1A. This is a display example at a certain point in time for a drawing application that is playing back the entry contents of the electronic pen 1A in a state where the designated range 505A is designated and the reproduction setting of the designated range 505A is changed. This is a display example at a certain point of time when a drawing application reproducing the entry contents of the electronic pen 1A and the electronic pen 1B in a state where the designated ranges 505A and 505B are designated and the reproduction settings of the designated ranges 505A and 505B are changed. . It is a processing flow by the stroke reproduction | regeneration system in 1st Embodiment. It is a processing flow by the stroke reproduction | regeneration system in 2nd Embodiment.

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

<First Embodiment>
[System configuration of stroke playback system]
As shown in FIG. 1, a stroke reproduction system 10 according to the first embodiment includes an answer sheet 4, an electronic pen 1 used by a user, and a stroke reproduction device 2 that receives and processes entry information from the electronic pen 1. It consists of. Further, the projector 3 may display an image on the display (display means) of the stroke reproducing device 2 on a screen.

[Answer sheet]
First, the answer sheet 4 will be described. On answer sheets 4A and 4B (4), a dot pattern (coded pattern), which will be described later, is printed on almost the entire surface, and a column for entering affiliation (class) and name, a question, and an answer column are printed thereon. ing. The dot pattern is printed with ink containing carbon that absorbs infrared rays, and problems and entry fields are printed with ink that does not absorb in the infrared region.

[Dot pattern]
Next, the dot pattern (coded pattern) printed on the answer sheet 4 will be described. FIG. 2 is a diagram for explaining the relationship between the dots of the dot pattern printed on the answer sheet 4 and the values to which the dots are converted. As shown in FIG. 2, each dot of the dot pattern is associated with a predetermined value depending on its position. In other words, each dot is associated with a value of 0 to 3 depending on which direction the top, bottom, left, or right is shifted from the reference position of the grid (intersection of the vertical line and horizontal line). The value of each dot can be further converted into a first bit value for the X coordinate and a second bit value for the Y coordinate. The position coordinates on the answer sheet 4 are determined by the combination of the information thus associated.

  FIG. 3A shows an arrangement of a certain dot pattern. As shown in FIG. 3A, 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 which part of the answer sheet 4 is taken 6 × 6 dots. ing. A dot pattern formed by these 36 dots holds position coordinates (for example, where the dot pattern is located on the answer sheet 4) and a dot pattern address (coded pattern address). 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. 3 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. 4, the electronic pen 1 includes an ink cartridge 104, an LED 105, a CMOS camera 106, a pressure sensor 107, a processor 108 including a CPU, a memory 109 such as a ROM and a RAM, A communication unit 111 including a real time clock 110, an antenna, and the like, and a battery 112 are provided. The tip of the ink cartridge 104 is a pen tip portion 103, and the user brings the pen tip portion 103 of the electronic pen 1 into contact with the answer sheet 4 to enter the affiliation (class) and name, Enter the answer in the answer field.

  The battery 112 is for supplying electric power to each component in the electronic pen 1. For example, the battery 112 is configured to turn on / off the electronic pen 1 itself by attaching and detaching a cap (not shown) of the electronic pen 1. May be. The real time clock 110 transmits time information indicating the current time (time stamp) and supplies the time information to the processor 108. The pressure sensor 107 detects the pressure applied through the ink cartridge 104 from the pen tip 103 when the user writes or taps the answer sheet 4 or taps the answer sheet 4 with the electronic pen 1, that is, the writing pressure. Transmit to the processor 108.

  The processor 108 switches on / off the switches of the LED 105 and the CMOS camera 106 based on the writing pressure data supplied from the pressure sensor 107. That is, when the user writes characters or the like on the answer sheet 4 with the electronic pen 1, the pen pressure is applied to the pen tip portion 103, and when the pressure sensor 107 detects a writing pressure exceeding a predetermined value, the processor 108 Is started, the LED 105 and the CMOS camera 106 are operated.

  The LED 105 and the CMOS camera 106 are attached near the pen tip portion 103 of the electronic pen 1, and an opening 102 is formed in a portion of the housing 101 that faces the LED 105 and the CMOS camera 106. The LED 105 illuminates infrared rays toward the vicinity of the pen tip portion 103 on the answer sheet 4. The area is slightly shifted from the position where the pen tip portion 103 contacts the answer sheet 4. The CMOS camera 106 captures a dot pattern in the area illuminated by the LED 105 and supplies image data of the dot pattern to the processor 108. Here, since carbon absorbs infrared rays, the infrared rays irradiated by the LED 105 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. By photographing with the CMOS camera 106, a threshold value is provided based on the difference in the amount of reflected infrared light, so that a dot region containing carbon can be distinguished from other regions. Therefore, since the ink printed with the question on the answer sheet 4 and the answer column does not have absorbability in the infrared region, the processor 108 can recognize the dot pattern. Note that the shooting area by the CMOS camera 106 is a range including a size of about 2 mm × about 2 mm as shown in FIG. 3A, and the shooting by the CMOS camera 106 is performed at regular intervals of about 50 to 100 times per second. Is called.

  The processor 108 performs X and Y coordinates (simply “coordinate data”) on the answer sheet 4 of the stroke (handwriting) to be entered by the user from the dot pattern of the image data supplied by the CMOS camera 106 during the user entry. And a dot pattern address (coded pattern address) unique to the answer sheet 4 are continuously calculated. That is, the processor 108 converts the image data of the dot pattern as shown in FIG. 3A supplied by the CMOS camera 106 into the data array shown in FIG. The data is converted into a Y coordinate bit value, and X, Y coordinate data and a dot pattern address are calculated from the data array by a predetermined calculation method. Then, the processor 108 associates the current time (time stamp: entered time information) transmitted from the real-time clock 110, the writing pressure data, the dot pattern address, and the X and Y coordinate data. Since the 6 × 6 dot pattern in the answer sheet 4 does not overlap in the answer sheet 4, when the user enters characters or the like with the electronic pen 1, the entered position corresponds to any position on the answer sheet 4. This can be specified by coordinate calculation by the processor 108.

  The memory 109 stores property information such as a pen ID such as “pen01” for identifying the electronic pen 1, a pen manufacturer number, and a pen software version. The communication unit 111 associates the pen ID (electronic pen identification information), time information (time stamp), writing pressure data, dot pattern address, and X and Y coordinate data, and reproduces strokes as entry information. Transmit to device 2. Transmission to the stroke reproducing device 2 by the communication unit 111 is performed instantaneously and sequentially by wireless transmission of Bluetooth (registered trademark).

[Stroke playback device]
Next, the stroke reproducing device 2 will be described. The stroke reproduction device 2 is configured by a personal computer or the like, which includes an antenna device capable of data communication with the electronic pen 1, a processor such as a CPU, a memory such as a ROM or a RAM, a display, a mouse or a keyboard as hardware. Is done. FIG. 5 is a functional block diagram of the stroke reproducing device 2. Functionally, the stroke reproducing apparatus 2 includes an input unit 21 such as a mouse and a keyboard, a receiving unit 22, a transmitting unit 23, a display unit 24, a storage unit 25, and a processing unit 26. Then, the stroke reproduction device 2 performs a predetermined process based on the entry information received from the electronic pen 1.

  The receiving means 22 is constituted by an antenna receiving circuit or the like, receives entry information from the electronic pen 1 and transmits it to the processing means 26. The transmission unit 23 transmits a video signal according to an instruction from the processing unit 26 to the projector 3. The data transmission method to the projector 3 may be wired or wireless. If the projector 3 is not connected, the transmission unit 23 may not be provided. The display means 24 is constituted by a display or the like, and displays the contents instructed by the processing means 26.

  The storage unit 25 is configured by a memory such as a ROM or a RAM. The storage unit 25 stores the entry information received from the electronic pen 1 for each pen ID according to the processing instruction of the processing unit 26. In addition, the storage unit 25 stores in advance information that associates the image information of the pattern of the answer sheet 4 with the coordinate area, and a program of the drawing application 5 described later. Further, the storage unit 25 stores normal reproduction setting setting information related to stroke reproduction, which will be described later, and setting information related to stroke reproduction of the designated range 505.

  The processing unit 26 is configured by a processor such as a CPU, and based on the entry information received from the electronic pen 1 by the receiving unit 22, the stroke is reproduced and displayed on the display unit 24 or displayed on the display unit 24. A predetermined process such as causing the transmission unit 23 to transmit a video signal for projecting an image similar to the image to the projector 3 to the projector 3 is executed. Specifically, the processing unit 26 activates the drawing application 5 to display it on the display unit 24, and reproduces a stroke on the drawing application 5. The projector 3 projects an image similar to the image (video) displayed on the display unit 24 on the screen based on the video signal received from the transmission unit 23.

[Screen display by drawing application]
Next, a display form of the drawing application 5 processed by the stroke reproduction device 2 based on the entry information received from the electronic pen 1 will be described.

(Display form 1)
FIG. 6 shows a display form of the drawing application 5 that displays the entry contents of the electronic pen 1A (pen ID “pen01”). The user's handwritten stroke stored as entry information in the storage unit 25 by the stroke reproduction device 2 is drawn on the stroke display area 501 of the drawing application 5 together with the image information of the pattern on the answer sheet 4 by the processing unit 26. When the stroke to be drawn becomes larger than the stroke display area 501 due to enlarged display or the like, the processing means 26 enables the horizontal scroll bar and the vertical scroll bar, and scrolls the stroke display area 501 by the user's mouse operation. The entire stroke may be displayed in a plurality of times. In the drawing application 5, all users who have filled in the answer sheet 4 with the electronic pen 1 are displayed as user-specific display buttons 503 in the user display list 502 on the right side of the screen. In the display example of FIG. 6, a user-specific display button 503A corresponding to a user who uses the electronic pen with the pen ID “pen01” and a user-specific display button 503B corresponding to the user who uses the electronic pen with the pen ID “pen02” are displayed. Has been. The drawing application 5 further displays an application end button 504 at the upper right portion of the screen and a playback controller 6 at the lower portion of the screen. The reproduction controller 6 is a controller including an execution button related to a function for reproducing and displaying a stroke as a moving image.

  Here, when the viewer selects the user-specific display button 503A with the pen ID “pen01” (click operation of the mouse), the processing unit 26 selects the user-specific display button 503A and places the user-specific display button 503A on the left side of the user-specific display button 503A. “●” is displayed. At this time, nothing is displayed on the left side of the unselected user-specific display button 503B (indicated by a broken line “◯” in FIG. 6). In the example of FIG. 6, the selected state of the button is indicated by a black circle “●”, and the non-selected state is indicated by a broken line “○”, but the color of the entire button may be changed, or the button expression may be uneven. Thus, the selected / unselected state may be indicated. Then, the processing unit 26 calls the stroke information corresponding to the pen ID “pen01” stored in the storage unit 25 and displays the stroke of the pen ID “pen01” in the stroke display area 501A. When the viewer selects the user-specific display button 503B with the pen ID “pen02” displayed in the user display list 502, the processing unit 26 converts the display content of the stroke display area 501 into the stroke information of the user selected by the viewer. Switching (see FIG. 9). When the viewer selects the application end button 504, the processing unit 26 ends the drawing application 5.

  FIG. 7 shows an example of the playback controller 6. The playback controller 6 includes a playback bar 601, a playback pointer 602, a playback button 603, a stop button 604, a cueing movement button 605, a one-stroke back button 606, a one-stroke forward button 607, a tail movement button 608, and a playback speed setting list 609. , A stroke number display 610 and an option display button 611. Next, the function of each component of the playback controller 6 will be described. The reproduction bar 601 indicates the number of strokes to be reproduced by a number line. The playback pointer 602 indicates the position of the number of elapsed strokes from the start time on the playback bar 601. It can be moved by dragging, and the stroke information display time can be arbitrarily designated. The playback button 603 starts playback display. A stop button 604 stops reproduction display. The cue movement button 605 rewinds the playback display time to the start time. A one-stroke return button 606 rewinds the playback display time point to the time point before one stroke. The button 607 that advances one stroke advances the playback display time point to the time point after one stroke. The last movement button 608 advances the playback display time to the playback end time. The playback speed setting list 609 is a pull-down menu system, and the initial playback speed is 1 to 5 in 5 stages (1 is the slowest speed, 3 is the actual entry speed, and 5 is the fastest speed) Change with. The playback speed set in the playback speed setting list 609 is stored in the storage unit 25 as the playback speed of the normal playback setting. The stroke number display 610 displays the number of strokes that have elapsed since the start of playback and the total number of stroke information to be played back. The option display button 611 pops up a reproduction setting screen (window) 7 for a specified range.

  Note that when the playback button 603 is selected in a state where the viewer does not specify the specified range, the processing unit 26 plays back and displays the stroke of the user (pen ID) selected by the viewer in the stroke display area 501. At this time, the playback speed set in the playback speed setting list 609 and the playback stroke color and playback stroke size set in advance are played back as normal playback settings.

  FIG. 8 shows an example of the designated range reproduction setting screen 7. The designated range reproduction setting screen 7 includes a designated range reproduction speed setting list 701, a designated range reproduction stroke color setting list 702, a designated range reproduction stroke size setting list 703, a confirmation button 704, and a cancel button 705. . Next, the function of each component of the designated range reproduction setting screen 7 will be described. The specified range playback speed setting list 701 is a pull-down menu method, and changes the playback speed of the specified range in five stages from 1 to 5 (1 is the slowest speed, 3 is the actual entry speed, and 5 is the highest. Play at fast speed). The designated range reproduction stroke color setting list 702 has a pull-down menu method, and changes the designated range reproduction stroke color (changes the stroke color to be drawn to black, red, blue, etc.). The designated range reproduction stroke size setting list 703 has a pull-down menu method, and changes the designated range reproduction stroke size (pt). The confirm button 704 confirms the changed contents of the designated range reproduction setting screen 7 and stores them in the storage means 25, and closes the designated range reproduction setting screen 7. A cancel button 705 cancels the change contents of the designated range reproduction setting screen 7 and closes the designated range reproduction setting screen 7.

(Display form 2)
FIG. 9 shows a display form of the drawing application 5 when the display content is switched from the display example of FIG. 6 to the entry content of the electronic pen 1B (pen ID “pen02”). When the viewer selects the user-specific display button 503A with the pen ID “pen01” again, the processing unit 26 deselects the user-specific display button 503A and turns off the display of “●” on the left side of the user-specific display button 503A. (Represented by a broken line “◯”), the stroke “pen01” displayed in the stroke display area 501A is erased from the screen. Next, when the viewer selects the user-specific display button 503B with the pen ID “pen02”, the processing unit 26 selects the user-specific display button 503B and displays “●” on the left side of the user-specific display button 503B. . Then, the processing unit 26 calls the stroke information corresponding to the pen ID “pen02” stored in the storage unit 25 and draws the stroke of the pen ID “pen02” at a time in the stroke display area 501B. Further, the processing means 26 causes the number of strokes displayed 610 </ b> B of the playback controller 6 to display the number of strokes that have elapsed from the start of playback of the stroke with the pen ID “pen02” and the total number of stroke information to be played back. The number of elapsed strokes at this time coincides with the total number.

(Display form 3)
FIG. 10 shows the display of the drawing application 5 when the display example of FIG. 6 is switched to display the entry contents of the electronic pen 1A (pen ID “pen01”) and the electronic pen 1B (pen ID “pen02”) simultaneously. The form is shown. When the viewer selects the user-specific display button 503B of “pen02” in a state where the user-specific display button 503A of “pen01” is selected, the processing unit 26 selects both the user-specific display buttons 503A and 503B. Both are selected and “●” is displayed on the left side. The processing unit 26 shifts the display position of the stroke display area 501A on which the stroke with the pen ID “pen01” is drawn, and draws the stroke with the pen ID “pen02” at a time in the stroke display area 501B. The processing unit 26 sets the stroke number display 610 of the playback controller 6 to the number of elapsed strokes from the playback start time / the target of playback, which is the sum of the stroke with the pen ID “pen01” and the stroke with the pen ID “pen02”. Display the total number of stroke information.

(Display form 4)
FIG. 11 shows a display form at a certain point in time of the drawing application 5 that reproduces and displays the entry content of the electronic pen 1A (pen ID “pen01”). When the viewer selects the playback button 603 of the playback controller 6 from the state where the entry content of the electronic pen 1A (pen ID “pen01”) is displayed as shown in FIG. The means 26 refers to the time information associated with the stroke information of the pen ID “pen01” and reproduces and displays the strokes in the stroke display area 501A in the order in which the strokes are entered on the answer sheet 4A. The processing means 26 displays on the stroke number display 610A of the playback controller 6 the elapsed stroke number “59” from the start of playback of the stroke with the pen ID “pen01” and the total number “245” of stroke information to be played back. . That is, the total number of stroke information to be reproduced for the stroke with the pen ID “pen01” is 245, and the stroke display area 501A displays up to the 59th stroke. At this time, the playback pointer 602 is at the position 59/245 on the playback bar 601.

(Display form 5)
FIG. 12 shows a display form of the drawing application 5 when the designated range 505A is designated as the entry content of the electronic pen 1A (pen ID “pen01”) and the reproduction speed is set. The viewer arbitrarily designates the designated range 505A by moving the cursor and performing a drag operation on the stroke display area 501A in which the stroke of the pen ID “pen01” is displayed. The processing unit 26 stores the coordinate information corresponding to the designated range 505A in the storage unit 25, and displays the rectangle indicating the designated range 505A on the display unit 24 as a broken line. Here, when the viewer selects the option display button 611, the processing means 26 pops up the reproduction setting screen 7 in the designated range. The viewer can change the reproduction setting (reproduction speed, reproduction stroke color, and reproduction stroke size) of the designated range 505A designated on the reproduction setting screen 7 of the designated range. Specifically, the reproduction setting of the specified range is set to a speed “2”, “red” color, and thickness “14 pt” that are slightly slower than normal (see FIG. 8). Note that the reproduction setting of the designated range may be performed before the designated range 505A is designated.

(Display form 6)
FIG. 13 shows a display form at a certain point in time for the drawing application 5 that reproduces and displays the entry contents of the electronic pen 1A (pen01) in which the designated range 505A is designated and the reproduction setting of the designated range 505A is set. . When the viewer selects the playback button 603 of the playback controller 6, the processing unit 26 performs normal playback speed, playback stroke color, and playback in the order in which the stroke of the pen ID “pen01” is entered in the stroke display area 501A. Playback and display with stroke size. When the stroke is reproduced within the designated range 505A, the processing unit 26 reproduces the target stroke with the reproduction speed, reproduction stroke color, and reproduction stroke size set on the reproduction setting screen 7 of the designated range. Specifically, the processing means 26 reproduces the stroke in the specified range 505A with the speed “2”, the “red” color, and the thickness “14 pt”. Further, the processing means 26 displays the number of strokes to be reproduced / the total number of stroke information to be reproduced from the reproduction start time of the stroke of the pen ID “pen01” on the stroke number display 610A of the reproduction controller 6.

(Display form 7)
In FIG. 14, the electronic pen 1A (pen ID “pen01”) and the electronic pen 1B (pen ID “pen02”) in a state where the designated ranges 505A and 505B are designated and the reproduction settings of the designated ranges 505A and 505B are changed. The display form at a certain point in time of the drawing application 5 reproducing the entry content is shown. When the viewer arbitrarily designates the designated range 505A by moving the cursor and performing a drag operation on the stroke display area 501A where the stroke of the pen ID “pen01” is displayed, the processing means 26 designates the designated range 505A. The coordinate information corresponding to the range 505A is stored in the storage unit 25, and the designated range 505A is represented by a broken-line rectangle and displayed on the display unit 24. Further, the processing unit 26 automatically sets the same range on the stroke display area 501B where the stroke of the pen ID “pen02” is displayed as the designated range 505B, and represents the designated range 505B by a broken-line rectangle. It is displayed on the display means 24. Alternatively, the designated range 505B may be designated by a user arbitrarily performing a new drag operation. When the viewer selects the playback button 603 of the playback controller 6, the processing means 26 enters the stroke of the pen ID “pen01” in the stroke display area 501A and the stroke of the pen ID “pen02” in the stroke display area 501B. Reproduction is performed at the normal reproduction speed, reproduction stroke color, and reproduction stroke size in the order in which they are performed. When the stroke reproduction becomes a stroke in the designated range 505A or a stroke in 505B, the processing means 26 reproduces the target stroke with the reproduction speed, reproduction stroke color and reproduction stroke size of the designated range set by the viewer. Further, the processing means 26 displays the number of strokes that have elapsed from the start of playback of the stroke that is the sum of the stroke of the pen ID “pen01” and the stroke of the pen ID “pen02” in the stroke number display 610 of the playback controller 6, and Display the total number of target stroke information.

[Processing flow by stroke playback system]
Next, a processing flow of reproduction display by the stroke reproduction system 10 of the first embodiment will be described with reference to FIG.

  When the viewer selects the play button 603, the processing means 26 determines whether or not the viewer has designated the designated range 505 by a drag operation (step S101). When it is determined that the designated range 505 is not designated (step S101: No), the processing means 26 reads the normal reproduction setting stored in the storage means 25 (step S102). Next, the processing means 26 draws strokes in the stroke display area 501 in order from the stroke with the earliest time entered on the answer sheet 4 based on the read reproduction setting (step S103). Here, the processing means 26 determines whether or not there is a stroke to be drawn next every time one stroke is drawn (step S104). When it is determined that there is a next stroke (step S104: Yes), the processing unit 26 returns to step S102 and repeats steps S102 to S104. When it is determined that there is no next stroke (step S104: No), the processing unit 26 ends the process.

  On the other hand, when it is determined in step S101 that the designated range 505 is designated (step S101: Yes), the processing unit 26 determines whether or not the stroke to be drawn currently is a stroke in the designated range 505. Determination is made (step S105). When the processing unit 26 determines that the stroke to be rendered is a stroke within the specified range 505 (step S105: Yes), the processing unit 26 reads the reproduction setting of the specified range 505 stored in the storage unit 25. (Step S106), the stroke is rendered in the stroke display area 501 so as to have the reproduction speed, reproduction stroke color, and reproduction stroke size within the specified range (step S107). On the other hand, if it is determined in step S105 that the stroke is not within the specified range 505 (step S105: No), the processing unit 26 reads the normal reproduction setting stored in the storage unit 25 (step S108), and the stroke display area A stroke is drawn at 501 (step S107). Then, the processing unit 26 determines whether or not there is a next stroke to be drawn (step S109), and if it is determined that there is a next stroke (step S109: Yes), the processing unit 26 performs step S105. Returning to step S105, steps S105 to S109 are repeated. When the processing unit 26 determines that there is no next stroke (step S109: No), the processing unit 26 ends the process. The processing unit 26 updates and displays the number of elapsed strokes from the stroke reproduction start time in the stroke number display 610 of the reproduction controller 6 every time one stroke is drawn. In this way, the processing means 26 reproduces and displays the stroke display area 501 by drawing all the strokes of the electronic pen 1 continuously.

(Display form 1)
Next, the reproduction display process in the display mode 1 shown in FIG. 6 will be described with reference to FIG. When the viewer selects the playback button 603 (mouse click operation) while the user-specific display button 503A of the pen ID “pen01” is selected, the processing means 26 causes the viewer to specify a specified range by dragging the mouse. It is determined whether or not 505A is designated (step S101). At this time, the processing means 26 determines that the viewer does not designate the designated range 505A (step S101: No), and reads the normal reproduction setting stored in the storage means 25 (step S102). The processing means 26 draws the strokes entered with the pen ID “pen01” in the stroke display area 501A based on the read reproduction settings in the order of entry times (step S103). Then, the processing means 26 determines whether or not there is a next stroke every time one stroke is drawn (step S104), and if it is determined that there is a next stroke (step S104: Yes), the processing means. 26 returns to step S102 and repeats steps S102 to S104. This routine is repeated 245 times until all strokes are drawn, and when the processing unit 26 determines that there is no next stroke (step S104: No), the processing unit 26 ends the processing. In this way, the processing means 26 reproduces and displays by drawing all 245 strokes of the pen ID “pen01” continuously in the stroke display area 501A.

(Display form 2)
Next, the reproduction display processing in the display mode 2 shown in FIG. 9 will be described with reference to FIG. When the viewer selects the play button 603 while the user-specific display button 503B of the pen ID “pen02” is selected, the processing unit 26 determines whether or not the viewer has designated the designated range 505B by dragging. Determination is made (step S101). At this time, the processing means 26 determines that the viewer does not designate the designated range 505B (step S101: No), and reads the normal reproduction setting stored in the storage means 25 (step S102). The processing means 26 draws the stroke entered with the pen ID “pen02” in the stroke display area 501B (step S103). Then, the processing means 26 determines whether or not there is a next stroke (step S104). If it is determined that there is a next stroke (step S104: Yes), the processing means 26 returns to step S102, and step S102 to S104 are repeated. This routine is repeated 231 times, and when the processing unit 26 determines that there is no next stroke (step S104: No), the processing unit 26 ends the process. Thus, the processing means 26 draws all the strokes entered with the pen ID “pen02” in the stroke display area 501B.

(Display form 3)
Next, the reproduction display process in the display mode 3 shown in FIG. 10 will be described with reference to FIG. When the viewer selects the play button 603 in a state where both the user-specific display button 503A and the user-specific display button 503B are selected, the processing means 26 indicates that the viewer has specified the designated ranges 505A and 505B by dragging. It is determined whether or not (step S101). At this time, the processing means 26 determines that the viewer does not designate the designated ranges 505A and 505B (step S101: No), and reads the normal reproduction setting stored in the storage means 25 (step S102). The processing means 26 draws the stroke entered with the pen ID “pen01” in the stroke display area 501A and the stroke entered with the pen ID “pen02” in the stroke display area 501B (step S103). Then, the processing means 26 determines whether or not there is a next stroke (step S104). If it is determined that there is a next stroke (step S104: Yes), the processing means 26 returns to step S102, and step S102 to S104 are repeated. This routine is repeated 245 times for the stroke entered with the pen ID “pen01” and 231 times for the stroke entered with the pen ID “pen02”. When the processing means 26 determines that there is no next stroke (step S104: No), the processing means 26 ends the processing. In this way, the processing means 26 draws all strokes entered with the pen ID “pen01” and the pen ID “pen02” in each stroke display area 501.

(Display form 4)
Next, reproduction display processing in the display mode 4 shown in FIG. 11 will be described with reference to FIG. When the viewer selects the play button 603 while the user-specific display button 503A is selected, the processing unit 26 determines whether or not the viewer has designated the designated range 505A by dragging (step S101). . At this time, the processing means 26 determines that the viewer does not designate the designated range 505A (step S101: No), and reads the normal reproduction setting stored in the storage means 25 (step S102). The processing means 26 draws the stroke entered with the pen ID “pen01” in the stroke display area 501A (step S103). Then, the processing means 26 determines whether or not there is a next stroke (step S104). If it is determined that there is a next stroke (step S104: Yes), the processing means 26 returns to step S102, and step S102 to S104 are repeated. FIG. 11 shows a display form of the drawing application 5 when this routine is repeated 59 times.

(Display form 5)
In the display form 5 shown in FIG. 12, when the viewer designates the designated range 505A by moving the cursor in the stroke display area 501A and performing a drag operation, the processing means 26 stores the coordinate information corresponding to the designated range 505A. The data is stored in the means 25, and a rectangle indicating the designated range 505A is represented by a broken line and displayed on the display means 24. Further, when the viewer selects the option display button 611, the processing unit 26 pops up the reproduction setting screen 7 in the designated range. Then, when the viewer changes the playback settings (playback speed, playback stroke color, and playback stroke size) of the designated range 505A as necessary and selects the confirm button 704, the processing means 26 changes the setting information to the designated range 505A. Is stored in the storage means 25 as the reproduction setting within the specified range, and the reproduction setting screen 7 in the designated range is closed.

(Display form 6)
Next, reproduction display processing in the display mode 6 shown in FIG. 13 will be described with reference to FIG. When the viewer selects the play button 603 in a state where the designated range 505A is designated and the playback setting of the designated range 505A is set, the processing unit 26 determines whether the viewer designates the designated range 505A by dragging. It is determined whether or not (step S101). At this time, the processing means 26 determines that the viewer has designated the designated range 505A (step S101: Yes), and subsequently, whether or not the stroke to be drawn now is a stroke within the designated range 505A. Is determined (step S105). At this time, the processing means 26 determines that the current stroke is not a stroke in the designated range 505A until the stroke in the designated range 505A becomes a drawing target (step S105: No), and the storage means 25 stores it. The normal reproduction setting is read (step S108), and the stroke outside the designated range 505A written with the pen ID “pen01” is drawn in the stroke display area 501A with the normal reproduction setting (step S107). Then, the processing means 26 determines whether or not there is a next stroke (step S109). If it is determined that there is a next stroke (step S109: Yes), the processing means 26 returns to step S105, and step S105, S108, S107 and S109 are repeated.

  The processing unit 26 repeats this routine, and when the stroke in the designated range 505A becomes a drawing target, the processing unit 26 determines that the current stroke is a stroke in the designated range 505A (step S105: Yes) and stores it. The reproduction setting of the designated range 505A stored in the means 25 is read (step S106), and the stroke in the designated range 505A entered with the pen ID “pen01” is drawn in the stroke display area 501A with the reproduction setting of the designated range 505A. (Step S107). Then, the processing means 26 determines whether or not there is a next stroke (step S109). If it is determined that there is a next stroke (step S109: Yes), the processing means 26 returns to step S105, and step S105 to S107 and S109 are repeated. The processing means 26 repeats this routine, and when a stroke outside the designated range 505A becomes a drawing target, it again determines that the current stroke is not a stroke within the designated range 505A (step S105: No), and steps S105, S108, S107 and S109 are repeated. FIG. 13 shows a display form of the drawing application 5 when these routines are repeated 59 times.

  Thereafter, when the processing unit 26 proceeds with the reproduction display process and determines that there is no next stroke (step S109: No), the processing unit 26 ends the process. Thus, the processing means 26 draws the strokes within and outside the designated range 505A at the respective reproduction speeds for all the strokes entered with the pen ID “pen01” in the stroke display area 501A.

(Display form 7)
Next, reproduction display processing in the display mode 7 shown in FIG. 14 will be described with reference to FIG. When the viewer selects the play button 603 in the state where the designated ranges 505A and 505B are designated and the reproduction settings of the designated ranges 505A and 505B are set, the processing means 26 follows the processing flow shown in FIG. The process is performed separately for each reproduction display on the stroke display areas 501A and 501B. In other words, the processing means 26 determines whether or not each of the stroke display areas 501A and 501B is specified for each of the stroke display areas 501A and 501B by determining whether or not the viewer designates the designated ranges 505A and 505B (step S101). At this time, the processing means 26 determines that the viewer has designated the designated ranges 505A and 505B (step S101: Yes), and the current stroke is within the designated range 505A for each of the stroke display areas 501A and 501B. It is determined whether the stroke is within the designated range 505B (step S105). At this time, the processing means 26 determines that the current stroke is not a stroke inside the designated range 505A to 505B until the stroke in the designated range 505A or the stroke in the designated range 505B becomes a drawing target (step S105: No), normal playback settings stored in the storage means 25 are read (step S108). Then, if the stroke to be drawn is a stroke outside the designated range 505A entered with the pen ID “pen01”, the processing means 26 designates the designated range entered with the pen ID “pen02” in the stroke display area 501A. If the stroke is outside 505B, the stroke is displayed in the stroke display area 501B with normal playback settings (step S107). Then, the processing means 26 determines whether or not there is a next stroke (step S109). If it is determined that there is a next stroke (step S109: Yes), the processing means 26 returns to step S105, and step S105, S108, S107 and S109 are repeated.

  The processing unit 26 repeats this routine, and when the stroke in the designated range 505A or the stroke in the designated range 505B becomes a drawing target, the processing unit 26 determines that the current stroke is a stroke inside the designated range 505A to 505B. The determination is made (step S105: Yes), and the reproduction settings of the designated ranges 505A to 505B stored in the storage unit 25 are read (step S106). Then, if the stroke to be drawn is the stroke within the designated range 505A entered with the pen ID “pen01”, the processing means 26 designates the designated range entered with the pen ID “pen02” in the stroke display area 501A. If the stroke is within 505B, the stroke is displayed in the stroke display area 501B with the reproduction settings of the designated ranges 505A and 505B (step S107). Then, the processing means 26 determines whether or not there is a next stroke (step S109). If it is determined that there is a next stroke (step S109: Yes), the processing means 26 returns to step S105, and step S105 to S107 and S109 are repeated.

  The processing means 26 repeats this routine, and when the stroke in the designated range 505A or the stroke in the designated range 505B is no longer a drawing target, it is determined again that the current stroke is not a stroke inside the designated range 505A or 505B ( Step S105: No), Steps S105, S108, S107 and S109 are repeated. FIG. 14 shows the display form of the drawing application 5 when these routines are repeated 113 times for each of the stroke display areas 501A and 501B.

  Thereafter, when the processing unit 26 advances the processing and determines that there is no next stroke (step S109: No), the processing unit 26 ends the processing. In this way, the processing means 26 draws strokes within and outside the designated range 505A in the stroke display area 501A for all strokes entered with the pen ID “pen01” at the respective playback speeds. For all strokes entered with the ID “pen02”, strokes within and outside the designated range 505B are drawn in the stroke display area 501B at the respective playback speeds.

[Operational effects of the stroke reproduction system of the first embodiment]
According to this stroke reproduction system 10, the viewer can reproduce and display the entry contents entered by the user on the answer sheet 4 with the electronic pen 1 as a handwritten stroke, without changing the reproduction speed setting during reproduction. It is possible to automatically change the playback speed of the strokes entered in the arbitrarily specified range for playback. For example, the viewer designates in advance a range of the answer sheet 4 to be checked with particular care, and the stroke playback speed of the content entered by the user with the electronic pen 1 in the range is made slower than the normal playback speed. By setting to, the stroke playback speed in the specified range is automatically changed without changing the playback speed during stroke playback, so that the operation of the stroke playback device 2 is distracted. The range you want to check carefully can be analyzed carefully, improving convenience. In addition, you can set the playback speed inside and outside the range you want to check, so you can quickly play back only the range you want to check while quickly following the entire entry process, improving work efficiency. . Moreover, according to this stroke reproduction system 10, since the viewer can understand the user's entry process, he / she can also teach the stroke order of kanji. Moreover, since the color and thickness to display about the stroke of the range designated previously can also be set, it can make it easy for a viewer to recognize a stroke.

Second Embodiment
Next, a second embodiment will be described. Parts similar to those in the second embodiment and the first embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate. The second embodiment is different from the first embodiment only in the processing flow by the stroke reproduction system 10.

  A processing flow of reproduction display by the stroke reproduction system 10 of the second embodiment will be described with reference to FIG.

  When the viewer selects the playback button 603, the processing means 26 reads normal playback settings (step S201). Subsequently, the processing unit 26 determines whether or not the viewer has designated the designated range 505 by dragging the mouse (step S202). If the processing means 26 determines that the designated range 505 is not designated (step S202: No), the stroke is entered in the stroke display area 501 with normal playback settings in order from the stroke with the earliest time entered on the answer sheet 4. Drawing is performed (step S203). Here, every time one stroke is drawn, the processing means 26 determines whether or not there is a next stroke to be drawn (step S204), and if it is determined that there is a next stroke (step S204: Yes), the processing means 26 returns to step S203 and repeats steps S203 and S204. When it determines with there being no next stroke (step S204: No), the process means 26 complete | finishes a process.

  On the other hand, when it is determined in step S202 that the designated range 505 is designated (step S202: Yes), the processing unit 26 reads the reproduction setting of the designated range 505 (step S205). Subsequently, the processing means 26 determines whether or not the current stroke to be drawn is a stroke within the designated range 505 (step S206). When it is determined that the stroke is within the designated range 505 (step S206: Yes), the processing unit 26 draws a stroke in the stroke display area 501 with the reproduction setting of the designated range 505 (step S207). If it is determined that it is not a stroke (step S206: No), the processing means 26 draws a stroke in the stroke display area 501 with normal reproduction settings (step S208). Then, after steps S207 to S208, the processing means 26 determines whether or not there is a next stroke (step S209). If it is determined that there is a next stroke (step S209: Yes), the processing unit 26 returns to step S206. Steps S206 to S209 are repeated. When it is determined in step S209 that there is no next stroke (step S209: No), the processing unit 26 ends the process.

[Operational effects by the stroke reproduction system of the second embodiment]
According to this stroke reproduction system 10, the processing means 26 reads normal reproduction settings first, and when the designated range 505 is designated, it is further configured to read the reproduction settings of the designated range 505. Since it is not necessary to read the normal or specified reproduction range 505 for each stroke drawing, the processing load on the processing means 26 and the storage means 25 can be reduced.

<Modification>
In the processing flow by the stroke reproduction system 10 of the above-described embodiment, it is assumed that the designated range 505 is designated or changed or the reproduction setting of the designated range 505 is set in advance before the reproduction display. However, the application of the present invention is not limited to this. In the middle of the processing flow by the stroke reproduction system 10, the viewer designates the designated range 505 by dragging or selects the option display button 611 to pop up the designated range reproduction setting screen 7 to designate the designated range 505. You may be able to change or change the playback settings. In this case, for example, when the option display button 611 is selected by the viewer, the processing unit 26 temporarily stops the reproduction display of the stroke and displays the reproduction setting screen 7 in the designated range. When the viewer changes the reproduction setting of the designated range 505 and selects the confirm button 704, the processing unit 26 stores the reproduction setting of the designated range 505 in the storage unit 25 and displays the reproduction setting screen 7 for the designated range. Turn off. Then, the processing means 26 resumes the stroke reproduction display. At this time, the processing means 26 returns to step S101 or S105 in the process flow of the stroke reproduction system 10 of the first embodiment shown in FIG. 15, and the step 26 in the process flow of the stroke reproduction system 10 of the second embodiment shown in FIG. Returning to S202 or S205, the reproduction of the stroke may be resumed.

DESCRIPTION OF SYMBOLS 1A, 1B (1) ... Electronic pen 2 ... Stroke reproduction apparatus 3 ... Projector 4A, 4B (4) ... Answer sheet 5 ... Drawing application 501A, 501B (501) ... Stroke display area 502 ... User display list 503A, 503B (503) ) ... Display buttons by user 505A, 505B (505) ... Specified range 6 ... Playback controller 603 ... Playback button 609 ... Playback speed setting list 610 ... Stroke number display 611 ... Option display button 7 ... Specified range playback setting screen 701 ... Specify Range playback speed setting list 702 ... Specified range playback stroke color setting list 703 ... Specified range playback stroke size setting list 704 ... Confirm button 21 ... Input means 22 ... Receiving means 23 ... Transmission means 24 ... Display means 25 ... Storage means 26: Processing means

Claims (6)

A stroke reproduction device for reproducing and displaying a handwritten stroke on a display means,
Range designation means for designating an arbitrary range on the screen of the display means;
Reproduction speed setting means for setting the reproduction speed of the handwritten stroke in the range designated by the range designation means;
A stroke reproduction apparatus comprising: processing means for causing the display means to reproduce a handwritten stroke in a range designated by the range designation means at a reproduction speed set by the reproduction speed setting means.   2. The reproduction speed setting means can set the reproduction speeds of a handwritten stroke inside the range designated by the range designation means and a handwritten stroke outside the designated range, respectively. The stroke reproducing device described in 1. Stroke display setting means for setting the display color or display thickness of the handwritten stroke in the range specified by the range specifying means,
2. The processing unit causes the display unit to reproduce a handwritten stroke in a range specified by the range specifying unit according to a display color or thickness set by the stroke display setting unit. Or the stroke reproducing device according to 2; A program executed by a stroke playback device for playing back and displaying handwritten strokes on a display means,
Range designation means for designating an arbitrary range on the screen of the display means,
Reproduction speed setting means for setting the reproduction speed of the handwritten stroke in the range designated by the range designation means;
Processing means for causing the display means to reproduce a handwritten stroke in the range designated by the range designation means at a reproduction speed set by the reproduction speed setting means;
A program for causing the stroke playback device to function as:   5. The reproduction speed setting means can set the reproduction speeds of a handwritten stroke inside the range designated by the range designation means and a handwritten stroke outside the designated range, respectively. The program described in. A program executed by a stroke playback device further comprising stroke display setting means for setting a display color or display thickness of a handwritten stroke in the range specified by the range specifying means,
5. The processing unit causes the display unit to reproduce a handwritten stroke in a range specified by the range specifying unit in accordance with a display color or thickness set by the stroke display setting unit. Or the program of 5.

Images