JP6408273B2 - Information processing apparatus, information processing program, and information processing method - Google Patents

Description

  The present invention relates to an information processing apparatus, an information processing program, and an information processing method.

  In the character recognition device disclosed in Patent Document 1, when the stroke erasing button is pressed, only one stroke input immediately before the stroke erasing button is pressed is deleted. Patent Document 1 discloses that the stroke to which the point belongs may be erased by the user touching an arbitrary place in the character input area with a pen.

JP-A-10-116318

  However, in the above background art, when a stroke erasing button is pressed or an arbitrary place is touched with a pen, the corresponding stroke is erased immediately, and an undesired stroke may be accidentally erased. .

  Therefore, a main object of the present invention is to provide a novel information processing apparatus, information processing program, and information processing method.

  Another object of the present invention is to provide an information processing apparatus, an information processing program, and an information processing method capable of accurately erasing a desired line.

The information processing apparatus of the first invention is an information processing apparatus to be displayed on the display device by drawing the hand-drawn image that is handwritten by using the input means, the input detecting means for detecting an input instruction by the input means, the input follow the instructions to erase the line according to the locus to instruction completion from the instruction start, first control means for displaying on the display device for each line, the first erase mode or input instruction indicates a line to erase the portion indicated by the input instruction A mode selection means for selecting the second erase mode according to the user's instruction, and a confirmation menu for allowing the user to confirm whether or not to erase the line indicated by the input instruction when the second erase mode is selected; A second control means is provided for erasing the line when an input instruction for erasing is detected via the confirmation menu .

According to the first invention, when the second erasing mode is selected, since the line is erased after whether clear the line indicated by the input instruction is confirmed, the user is exactly the desired line Can be erased.
In the information processing apparatus of the second invention, the second control means displays the line indicated by the input instruction in a recognizable manner.
According to the second aspect, the line indicated by the input instruction can be recognized.

The information processing apparatus of the third invention, the second control means causes the flashing display lines indicated by the input instruction.

According to the third invention, the line indicated by the input instruction is displayed in a blinking manner, whereby the user can surely recognize the selected line.

The information processing apparatus of the fourth invention, the second control means causes grayed out a line indicated by the input instruction.

The fifth information processing apparatus of the present invention, the second control means causes the display by changing the thickness of the lines indicated by the input instruction.

The information processing apparatus of the sixth invention, the second control means causes the display to change the color of the line indicated by the input instruction.

In the fourth to sixth inventions, similarly to the third invention, the user can surely recognize the line indicated by the input instruction .

The information processing apparatus according to the seventh aspect of the present invention further comprises an erasure notification means for notifying the user that the line is to be erased before the line indicated by the input instruction is erased by the second control means .

According to the seventh aspect , similarly to the first aspect, the user can accurately erase a desired line.

An eighth invention is an information processing program executed by a computer for displaying handwritten content on a display device using an input means, wherein the processor of the computer detects an input instruction by the input means, according input instruction, the line according to the locus to instruction completion from the instruction start, first control means for displaying on the display device for each line, the first erase mode or input instruction indicates a line to erase the portion indicated by the input instruction A mode selection means for selecting a second erase mode to be erased in accordance with a user's instruction, and a confirmation menu for allowing the user to confirm whether or not to erase the line indicated by the input instruction when the second erase mode is selected; when detecting an input instruction of the erasing run through the confirmation menu, function as a second control means for erasing the line, the information processing program It is.

An eighth invention is provided with a display means for displaying the input detection section, and handwritten content by using an input means for detecting an input instruction by the input means, an information processing method of a computer, (a) input According to the instruction, a step of displaying a line following the locus from the start of the instruction to the end of the instruction on the display unit for each line, and (b) a first erasing mode for erasing a portion indicated by the input instruction or a line indicated by the input instruction A step of selecting the second erase mode in accordance with the user's instruction ; and (c) when the second erase mode is selected, a confirmation menu is displayed for allowing the user to confirm whether or not to erase the line indicated by the input instruction. This is an information processing method including a step of erasing the line when an input instruction to execute erasure is detected via the confirmation menu .

In the eighth and ninth inventions, similarly to the first invention, the user can accurately erase a desired line.

  According to the present invention, the user can recognize the selected line and, after confirming whether or not to erase the line selected by the selection means, the user erases the desired line, so that the desired line can be erased accurately.

  The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

FIG. 1 is a block diagram showing an electrical configuration of the information processing apparatus according to the first embodiment. FIG. 2A is an illustrative view showing an example of a touch screen (initial screen) before handwriting is started, and FIG. 2B is an illustrative view showing another example of the touch screen. FIG. 3A shows an example of a touch screen on which an erroneous character is handwritten, and FIG. 3B shows an example of a touch screen when a part of the handwritten character is erased by a conventional eraser tool. Indicates. FIG. 4A shows an example of a touch screen when an erasing mode for erasing an erroneous handwritten character is selected, and FIG. 4B shows a single line selected from a handwritten image in the selection mode. An example of a touch screen in the case where the FIG. 5 shows a touch screen when the selected line is erased in the selection mode. FIG. 6 is an illustrative view showing one example of a memory map of the RAM shown in FIG. FIG. 7 is an illustrative view showing one example of handwritten input data. FIG. 8 is a flowchart showing a part of an example of the handwriting control process of the CPU shown in FIG. FIG. 9 is another part of the CPU handwriting control process shown in FIG. 1, and is a flowchart subsequent to FIG. FIG. 10 is another part of the handwriting control process of the CPU shown in FIG. 1, and is a flowchart subsequent to FIG. FIG. 11 is another part of the handwriting control process of the CPU shown in FIG. 1, and is a flowchart subsequent to FIG. FIG. 12 is a part of the handwriting control process of the CPU in the second embodiment, and is a flowchart subsequent to FIG. FIG. 13 is a part of the handwriting control process of the CPU in the third embodiment, and is a flowchart subsequent to FIG. FIG. 14 is a part of the CPU handwriting control process in the fourth embodiment, and is a flowchart subsequent to FIG. 9. FIG. 15 is an illustrative view showing one example of a touch screen in the fifth embodiment. FIG. 16 shows a part of the handwriting control process of the CPU in the fifth embodiment, and is a flowchart subsequent to FIG.

<First embodiment>
FIG. 1 is a block diagram showing an example of an electrical configuration of an information processing apparatus according to an embodiment of the present invention.

  Referring to FIG. 1, information processing apparatus 10 according to the first embodiment of the present invention includes a CPU 12. A RAM 14, a touch panel control circuit 16, and a drawing control circuit 18 are connected to the CPU 12 via a bus 30. A touch panel 20 is connected to the touch panel control circuit 16, and a display 22 is connected to the drawing control circuit 18.

  In the first embodiment, a case where the information processing apparatus 10 is applied to an electronic blackboard will be described. However, the information processing apparatus 10 is applied not only to an electronic blackboard but also to various information devices or electronic devices such as a tablet terminal, a smartphone, and a PC. In response to the input, handwritten characters, figures, symbols, and the like are drawn (displayed) on the display 22.

  In the first embodiment, a case where the touch panel 20 is used as an example of the input unit will be described. However, as an input unit other than the touch panel 20, a pointing device such as a computer mouse, a touch pad, or a pen tablet is used. Also good. The information processing apparatus 10 may be provided with a hardware key such as an operation panel or a hardware keyboard as other input means.

  Returning to FIG. 1, the CPU 12 governs overall control of the information processing apparatus 10. The RAM 14 is used as a work area and a buffer area for the CPU 12.

  The touch panel control circuit 16 applies necessary voltage and the like to the touch panel 20, detects a touch operation (touch input) within the touch effective range of the touch panel 20, and outputs touch coordinate data indicating the position of the touch input to the CPU 12. Output to.

  The touch panel 20 is a general-purpose touch panel, and an arbitrary system such as an electrostatic capacity system, an electromagnetic induction system, a resistance film system, and an infrared system can be used. In the first embodiment, as the touch panel 20, a capacitive touch panel is provided on the display surface of the display 22.

  The drawing control circuit 18 includes a GPU, a VRAM, and the like. Under the instruction of the CPU 12, the GPU displays a screen on the display 22 using handwritten input data 332 and image generation data 334 (see FIG. 6) stored in the RAM 14. Screen data for displaying (a touch screen 100 described later) is generated in the VRAM, and the generated screen is displayed on the display 22. As the display 22, for example, an LCD or an EL (Electro-Luminescence) display can be used.

  In the information processing apparatus 10 having such a configuration, in the handwriting input mode, the user uses the touch panel 20 to input characters, figures, symbols, and the like (hereinafter sometimes referred to as “characters”) by handwriting (touch input). Then, the touch panel control circuit 16 detects the touch input and outputs touch coordinate data corresponding to the touch position to the CPU 12. The CPU 12 draws (displays) handwritten characters on the display 22 based on the touch coordinate data output from the touch panel control circuit 16. That is, under the instruction of the CPU 12, handwritten characters and the like are drawn on the VRAM in the drawing control circuit 18, and image data corresponding to an image including the handwritten characters and the like drawn on the VRAM is output to the display 22. Therefore, an image including characters handwritten by the user is displayed on the display 22. Hereinafter, in this specification, an image including a handwritten character is referred to as a “handwritten image” on the premise that the user handwrites the character.

  FIG. 2A is an illustrative view showing an example of a touch screen 100 (initial screen) before handwriting is started. That is, FIG. 2A shows the initial touch screen 100 that has executed the drawing application and started the handwriting input mode. FIG. 2B is an illustrative view showing another example of the touch screen 100.

  For example, in the handwriting input mode, the touch screen 100 is displayed on the display 22 as shown in FIGS. As described above, the touch panel 20 is provided on the display surface of the display 22 (the same applies to FIGS. 3 to 5). The same applies to the case where the touch screen 100 is displayed. On the left end of the touch screen 100, images of buttons (function buttons) that perform predetermined functions and buttons (attribute buttons) for setting drawing attributes are displayed. In the first embodiment, a pen button 102 and an eraser button 104 are displayed. The pen button 102 is a button for executing a function of handwriting a line (setting a mode). The eraser button 104 is a button for executing a function for erasing a handwritten line (setting a mode).

  Although illustration is omitted, the touch screen 100 has an attribute button for selecting a line type, line color, and line width (thickness) and functions other than the above (open a new page, save, restore, etc.). Buttons to select are also displayed.

  For example, the user operates the touch panel 20 with the dedicated pen 120. However, the user can also operate with fingers. The operation (input) using the touch panel 20 includes tap (short press), slide (drag), flick, long touch (long press), etc. In the first embodiment, these are “touch input” or simply They are generically named as “input”. Further, changing from a state where the touch panel 20 is not touched to a state where the touch panel 20 is touched is referred to as touch-on (pen down), and changing from a state where the touch panel 20 is touched to a state where the touch panel 20 is not touched is referred to as touch-off (pen Say up). In response to continuous touch input, that is, input by sliding or flicking, the touch panel 20 outputs touch coordinate data corresponding to the current touch position at a cycle shorter than a predetermined cycle. For example, the predetermined period is 1 to several frames, and one frame is 1/30 second or 1/60 second.

  In a general electronic blackboard, when a user handwrites a character, a figure, a symbol, or the like, a line that follows a locus for handwritten input is displayed (drawn) on the touch screen 100. That is, characters, figures, symbols, and the like handwritten by the user (hereinafter, these may be collectively referred to as “handwritten images”) are displayed on the touch screen 100. In FIG. 2B, a touch screen 100 in the middle of handwriting a character is displayed.

  FIG. 3A shows an example of the touch screen 100 on which an erroneous character is handwritten, and FIG. 3B shows an example of the touch screen 100 when a part of the erroneously handwritten character is erased. However, FIG. 3A is an example of the touch screen 100 when the user continues to handwrite characters on the touch screen 100 of FIG.

  As can be seen from FIG. 3A, when handwriting a character or the like, it may be written erroneously. In the example shown in FIG. 3A, when a “blue” character is written in kanji, one horizontal bar is handwritten in the “month” portion. In such a case, when the user touches the eraser button 104, the eraser function is executed, and the eraser cursor 110 is displayed at the position touched with the pen 120. Then, as shown in FIG. 3B, when the pen 120 is traced on the touch screen 100, the eraser cursor 110 is moved according to the movement of the pen 120 (touch position), and the eraser cursor 110 (pen 120) is moved. Partial lines are erased.

  Although not shown in the figure, when the button of the function to restore is touched, the line written immediately before can be erased. In some cases, by touching an arbitrary point, a line including the point can be selectively deleted.

  As shown in FIG. 3B, the conventional eraser function erases all the lines where the pen 120 is moved, so if the lines overlap, it erases even the lines you want to keep. There is.

  In addition, with the undo function, it is possible to delete the line that was just written or the selected line. However, if you touch the undo function button or touch any point, the corresponding line will be deleted. Will be erased immediately, so the necessary lines may be accidentally erased.

  In order to avoid such an inconvenience, in the first embodiment, only unnecessary lines can be erased accurately. This will be specifically described below.

  4A shows an example of the touch screen 100 when an erasing mode for erasing a line is selected, and FIG. 4B shows an example of the touch screen 100 when a line to be erased is selected. FIG. 5 shows an example of the touch screen 100 when the selected line is erased.

  In the first embodiment, when the eraser button 104 is touched, a menu (erase mode selection menu) 200 for selecting an erase mode for erasing a line is displayed as shown in FIG. Is displayed in the vicinity of

  In the first embodiment, the erase mode includes a standard mode and a selection mode. The standard mode is an erasing mode in which lines are erased by the above-described conventional eraser function. The selection mode is an erasing mode for erasing a line selected by the user.

  When the standard mode is selected in the erase mode selection menu 200, the line traced by the user with the pen 120 is erased as described with reference to FIGS. 3 (A) and 3 (B). .

  On the other hand, when the selection mode is selected, when the user touches (selects) a line to be deleted with the pen 120, the selected line blinks and is selected as shown in FIG. A menu (erase confirmation menu) 202 for confirming whether or not to erase the displayed line is displayed in the vicinity of the selected line (touch position).

  However, in FIG. 4A, the selected line is displayed as a dotted line, thereby indicating that the selected line is blinking.

  Here, when the user touches (selects) erasure, the selected line is erased, and a touch screen 100 as shown in FIG. 5 is displayed. That is, by deleting the selected line, the correct Chinese character “blue” is displayed on the touch screen 100 of FIG.

  On the other hand, when cancel is touched (selected) in the erase confirmation menu 202, the selection of the currently selected line is canceled and the selection of the line to be deleted is performed again.

  As described above, in the selection mode, when a line is selected, the selected line is displayed in a manner that can be recognized by the user. After confirming whether or not to delete, the selected line is selected according to the user's instruction. Is deleted. For this reason, a line can be deleted accurately.

  The above-described operation of the information processing apparatus 10 is realized by the CPU 12 executing the information processing program stored in the RAM 14. In the first embodiment, as an example of the information processing program, a program (handwriting control processing program) for a drawing application that draws and stores handwritten characters is executed. Specific processing will be described later with reference to a flowchart.

  FIG. 6 shows an example of the memory map 300 of the RAM 14 shown in FIG. As shown in FIG. 6, the RAM 14 includes a program storage area 302 and a data storage area 304. The program storage area 302 stores a handwriting control processing program. The handwriting control processing program includes an input detection program 310, an image generation program 312, a display program 314, a line selection program 316, and an erasure program 318.

  The input detection program 310 is a program for acquiring touch coordinate data indicating the position of touch input on the touch panel 20 output from the touch panel control circuit 16 and storing it in the data storage area 304 in time series. However, the input detection program 310 is also a program for detecting an input from a hardware keyboard connected to the information processing apparatus 10 or a hardware operation panel or operation button provided in the information processing apparatus 10.

  The image generation program 312 is a program for generating image data corresponding to the touch screen 100 by using image generation data 334 (to be described later) or using touch coordinate data detected according to the input detection program 310. is there. Specifically, when the image generation program 312 is executed, the GPU draws image data corresponding to the touch screen 100 in the VRAM in the drawing control circuit 18 under the instruction of the CPU 12. The display program 314 is a program for outputting image data generated according to the image generation program 312 to the display 22. Accordingly, the touch screen 100 is displayed on the display 22.

  The line selection program 316 is a program for selecting a line including touch coordinates (points) indicated by the touch coordinate data 330 detected according to the input detection program 310 in the handwritten image displayed on the touch screen 100. That is, the line designated by the user is selected.

  The erase program 318 is a program for erasing lines in the normal mode or the selection mode.

  Although not shown, the handwriting control processing program also stores a program for selecting and executing various functions, a program for setting and changing drawing attributes, and the like.

  The data storage area 304 stores touch coordinate data 330, handwritten input data 332, image generation data 334, selection line data 336, and the like.

  The touch coordinate data 330 is current touch coordinate data (in the current frame) detected (acquired) according to the input detection program 310. When the touch coordinates indicated by the touch coordinate data 330 are included in the display area of a button (102, 104, etc.) displayed on the touch screen 100, a function assigned to the button is executed or an attribute is set. To do. When the touch coordinates indicated by the touch coordinate data 330 are not included in the display area of the buttons (102, 104, etc.) displayed on the touch screen 100, it is determined that the touch coordinates are included in the handwritten image. And stored as handwritten input data 332.

  The handwritten input data 332 is data about a handwritten image. Specifically, as shown in FIG. 7, data corresponding to a touch input locus from touch-on to touch-off is data for a table for managing each line. is there. However, the line includes not only a straight line connecting two points of touch-on and touch-off, but also a curved line (closed curve), a broken line, and a wavy line. A closed curve is a closed line having no end (the start point and the end point are at the same position), and is typically a polygon such as a circle or a rectangle. However, since handwriting is performed, the start point and the end point do not always match.

  As can be seen from FIG. 7, in the handwritten input data 332, coordinate data groups and attribute information are described corresponding to the identification information.

  The identification information is information for individually identifying lines drawn (added) in time series. In the example shown in FIG. 7, numerals are assigned as identification information. However, it is not necessary to be limited to numbers, alphabets may be used, both numbers and alphabets may be used, or symbols that cannot be deciphered by humans may be used.

  The coordinate data group is a set of touch coordinate data corresponding to points (touch coordinates) included in the line indicated by the identification information. Specifically, from the touch-on to the touch-off detected when the corresponding line is drawn. This is a set of touch coordinate data. However, in FIG. 7, a horizontal bar is described instead of the coordinate group for the sake of simplicity.

  The attribute information is information about the attribute set in the line indicated by the identification information. In the first embodiment, the attribute information is information on the line type, line color, and line width. However, in FIG. 7, a horizontal bar is described instead of the line type, line color, and line width for the sake of simplicity.

  Therefore, for example, when no line is drawn on the touch screen 100 and drawing of the line is started, “1” is described as the identification information of the table corresponding to the handwritten input data 332, and this identification information Correspondingly, touch coordinate data detected between touch-on and touch-off is described in the touch coordinate group column according to time series, and attribute information set in the pen 120 is described in the attribute information column. . When drawing of the next line is started, “2” is described as the identification information of the table corresponding to the handwritten input data 332, and the touch is detected from touch-on to touch-off corresponding to this identification information. The coordinate data is described in the touch coordinate group column according to the time series, and the attribute information set in the pen 120 is described in the attribute information column. Thus, when a line is drawn, the line data is sequentially added to the table, and the handwritten input data 332 is updated.

  However, the handwritten input data 332 is managed in units of pages. Therefore, when there are a plurality of pages, handwritten input data 332 is stored for each page.

  The attribute information may be changed after drawing a line in accordance with a user operation (instruction).

  The image generation data 334 is data such as polygon data and texture data for generating image data corresponding to various screens such as the touch screen 100. The image generation data 334 also includes image data for various buttons displayed on the touch screen 100. The selection line data 336 is data regarding identification information of a line selected according to the line selection program 316.

  In the data storage area 304, other data necessary for executing the handwriting control processing program is stored, and a timer (counter) and a register necessary for executing the handwriting control processing program are provided.

  8 to 11 are flowcharts showing the handwriting control process of the CPU 12 shown in FIG. For example, the drawing application is activated, and the handwriting input mode is selected according to a user instruction or a default setting. Then, as shown in FIG. 8, the CPU 12 starts a handwriting control process, and executes an initial process in step S1. In the initial process of step S1, the CPU 12 erases the touch coordinate data 330 in the data storage area 304 or reads the image generation data 334 from the nonvolatile memory, and then displays the initial touch screen 100 on the display 22. indicate. That is, under the instruction of the CPU 12, the image data of the initial touch screen 100 as shown in FIG. 2A is generated (drawn) by the drawing control circuit 18 and output to the display 22.

  In the next step S3, it is determined whether or not the touch is on. In step S <b> 3, the CPU 12 refers to the data storage area 304 and determines whether or not the state where the touch coordinate data 330 is stored is changed to the state where the touch coordinate data 330 is stored. Although illustration is omitted, the CPU 12 acquires touch coordinate data indicating the position of the touch input on the touch panel 20 output from the touch panel control circuit 16 and stores it in the data storage area 304 (touch input detection process). Is executed in parallel with the handwriting control process.

  If “NO” in the step S3, that is, if the touch is not on, the process returns to the same step S3 to wait for the touch-on. On the other hand, if “YES” in the step S3, that is, if the touch is on, it is determined whether or not the eraser button 104 is touched in a step S5. Here, the CPU 12 determines whether or not the touch position indicated by the acquired touch coordinate data 330 indicates the display area of the eraser button 104. The same applies to the case where it is determined whether or not the button (102, 104,...) Has been touched.

  If “NO” in the step S5, that is, if the eraser button 104 is not touched, it is determined whether or not another button is touched in a step S7. That is, the CPU 12 determines whether or not other buttons (102,...) Except the eraser button 104 are touched.

  If “YES” in the step S7, that is, if a button other than the eraser button 104 is touched, processing corresponding to the other button is executed in a step S9, and the process returns to the step S1. For example, in step S9, the CPU 12 changes line attribute information (line type, line color, line width), copies a handwritten image, or pastes the copied image in accordance with a user operation (instruction). The range of the handwritten image is designated, or the image data (handwritten input data 332) of the handwritten image is stored in the nonvolatile memory.

  On the other hand, if “NO” in the step S7, that is, if a touch input is made outside the display area of the buttons (102, 104,...), It is determined that the handwriting is a touch input, and in a step S11, Touch coordinate data 330 according to the touch input is stored as handwritten input data 332. That is, in the handwritten input data 332, the touch coordinate data 332 is described in the column of the coordinate data group corresponding to the corresponding line. In step S13, a line is displayed according to the touch input, and the process proceeds to step S15. In step S <b> 13, under the instruction of the CPU 12, the drawing control circuit 18 draws the screen data of the touch screen 100 including the image data of the handwritten image using the handwriting input data 332 and outputs it to the display 22. Accordingly, during handwriting input, a line is drawn by a plurality of points according to touch input, and a handwritten image such as a character is drawn by one or a plurality of lines.

  In step S15, it is determined whether or not the touch is off. Here, the CPU 12 refers to the data storage area 304 and determines whether or not the touch coordinate data 330 is stored. If “NO” in the step S15, that is, if the touch-on state continues, the process returns to the step S11. Therefore, the data regarding the line being drawn is updated in the handwritten input data 332 according to the touch input, and the line is displayed (drawn) according to the touch input. On the other hand, if “YES” in the step S15, that is, if the touch is off, the process returns to the step S3.

  If “YES” in the step S5, that is, if the eraser button 104 is touched, an erase mode selection menu 200 is displayed in the vicinity of the eraser button 104 in a step S17 shown in FIG. 9 as shown in FIG. To pull down. In step S19, it is determined whether any button is touched.

  If “YES” in the step S19, that is, if a button (102,...) Other than the erase mode selection menu 200 is touched, the erase operation is canceled in a step S21. That is, the erase mode is cancelled. In step S23, processing corresponding to the touched button is performed, and the process returns to step S3 shown in FIG. The process of step S23 is the same as the process of step S9 described above.

  On the other hand, if “NO” in the step S19, that is, if any button (102,...) Other than the erasing mode selection menu 200 is not touched, it is determined whether or not the erasing mode selection menu 200 is touched in a step S25. To do. If “NO” in the step S25, that is, if the erasing mode selection menu 200 is not touched, the process returns to the step S19 as it is. On the other hand, if “YES” in the step S25, that is, if the erasing mode selection menu 200 is touched, the erasing mode selection menu 200 is erased in a step S27, and the selection is performed in a step S29 as shown in FIG. Determine whether the mode is selected.

  If “NO” in the step S29, that is, if the standard mode is selected (touched), the eraser cursor 110 is displayed in a step S31. In step S33, the line is erased in the standard mode, and the process proceeds to step S51 as shown in FIG. In step S <b> 33, the CPU 12 executes a conventional eraser function, detects the touch coordinate data 330 of the portion traced with the pen 120, and erases the detected touch coordinate data 330 from the handwritten input data 332. Then, the touch screen 100 is updated, and the line of the portion traced with the pen 120 is deleted.

  On the other hand, if “YES” in the step S29, that is, if the selection mode is selected (touched), it is determined whether or not a line is selected (touched) in a step S35. Here, the CPU 12 determines whether or not the current touch coordinate data 330 is included in any touch coordinate data group of the handwriting input data 332, and the touch coordinate data group including the current touch coordinate data 330. It is determined that the line corresponding to is selected.

  If “NO” in the step S35, that is, if a line is not selected, the process returns to the step S35 as it is and waits for a line to be selected. On the other hand, if “YES” in the step S35, that is, if a line is selected, the selected line is blinked and displayed in a step S37. Although not shown, when “YES” is determined in the step S35, the identification information about the selected line is stored in the data storage area 304 as the selected line data 336.

  In step S39, the erasure confirmation menu 202 is displayed on the touch screen 100. In step S41 shown in FIG. 11, it is determined whether or not the erasure confirmation menu 202 is touched.

  If “NO” in the step S41, that is, if the erasure confirmation menu 202 is not touched, the process returns to the same step S41 as it is. On the other hand, if “YES” in the step S41, that is, if the erasure confirmation menu 202 is touched, it is determined whether or not erasure is selected (touched) in a step S43.

  If “NO” in the step S43, that is, if cancel is selected (touched), the selection is canceled in a step S45, and the process returns to the step S35 shown in FIG. In step S <b> 45, the CPU 12 deletes the selection line data 336 from the data storage area 304.

  On the other hand, if “YES” in the step S43, that is, if erasing is selected (touched), the selected line is erased in a step S47, and further, the erasure confirmation menu 202 is erased in a step S49. However, the CPU 12 deletes the touch coordinate data group and the attribute information of the line to which the identification information indicated by the selection line data 336 is assigned from the handwritten input data 332 in step S45.

  Although a detailed description is omitted, since such an information processing apparatus 10 is usually provided with a function of restoring the original, in step S45, the part instructed to be erased is hidden and restored. When other processing is executed without executing the function, the touch coordinate data 330 of the portion instructed to be deleted is deleted from the handwritten input data 332.

  In step S51, it is determined whether or not the process is finished. Here, the CPU 12 determines whether or not an end instruction is given from the user. If “NO” in the step S51, that is, if not finished, the process returns to the step S3 shown in FIG. On the other hand, if “YES” in the step S51, that is, if it is finished, the handwriting control process is finished.

  According to the first embodiment, when a line is selected in the selection mode, the selected line blinks and the user confirms whether or not to erase the selected line. The line can be erased accurately.

  In the first embodiment, all the lines selected in the selection mode are erased at one time. However, the present invention is not limited to this. For example, by tracing a part of the selected line, only the traced part may be erased. In such a case, if the touch coordinate data 330 corresponding to the portion traced by the user with the pen 120 is deleted only from the touch coordinate data group of the selected line, the selection can be made even if other lines overlap. Only the marked lines can be erased.

In the first embodiment, only one line to be erased is selected and erased. However, a plurality of lines to be erased may be selected so that a plurality of lines can be erased at once.
<Second embodiment>
Since the information processing apparatus 10 of the second embodiment is the same as the information processing apparatus 10 of the first embodiment except that the selected line is displayed in a recognizable manner, the contents differ from the first embodiment. Explanation will be given and repeated explanation will be omitted.

  Briefly, in the second embodiment, when a selection mode is selected as the erasing mode, when a line is selected, the selected line is displayed as a thick line. However, in order to indicate that the line has been selected, the line is merely made thick, and the line width of the attribute information is not changed.

  Specifically, as illustrated in FIG. 12, the CPU 12 executes the process of step S <b> 37 a instead of step S <b> 37 in the handwriting control process of FIGS. 8 to 11. Accordingly, when a line is selected in step S35, the selected line is displayed as a thick line in step S37a, and the process proceeds to step S39. Except for the process of step S37a, the process is the same as the handwriting control process of the first embodiment, and a duplicate description is omitted.

  Also in the second embodiment, lines can be erased accurately as in the first embodiment.

In the second embodiment, the selected line is displayed as a thick line, but may be displayed as a thin line or a dotted line. In such a case, it can be impressed that the selected line is erased to the user.
<Third embodiment>
Since the information processing apparatus 10 of the third embodiment is the same as the information processing apparatus 10 of the first embodiment except that the selected line is displayed in a recognizable manner, the contents differ from the first embodiment. Explanation will be given and repeated explanation will be omitted.

  Briefly, in the third embodiment, when a selection mode is selected as an erasing mode, when a line is selected, the selected line is displayed in gray out.

  Specifically, as shown in FIG. 13, the CPU 12 executes the process of step S <b> 37 b instead of step S <b> 37 in the handwriting control process of FIGS. 8 to 11. Therefore, when a line is selected in step S35, the selected line is grayed out in step S37b, and the process proceeds to step S39. Except for the process of this step S37b, since it is the same as the handwriting control process of 1st Example, the overlapping description is abbreviate | omitted.

Also in the third embodiment, the lines can be erased accurately as in the first and second embodiments.
<Fourth embodiment>
The information processing apparatus 10 according to the fourth embodiment is the same as the information processing apparatus 10 according to the first embodiment except that the selected line is displayed in a recognizable manner. Explanation will be given and repeated explanation will be omitted.

  Briefly, in the fourth embodiment, when a selection mode is selected as the erasing mode, when a line is selected, the color of the selected line is changed and displayed. However, in order to show that it has been selected, only the color of the line is changed, and the color of the line in the attribute information is not changed.

  Specifically, as illustrated in FIG. 14, the CPU 12 executes the process of step S <b> 37 c instead of step S <b> 37 in the handwriting control process of FIGS. 8 to 11. Therefore, when a line is selected in step S35, the selected line is displayed as a bold line in step S37c, and the process proceeds to step S39. Except for the process of step S37c, the process is the same as the handwriting control process of the first embodiment, and a duplicate description is omitted.

Also in the fourth embodiment, lines can be erased accurately as in the first to third embodiments.
<Fifth embodiment>
The information processing apparatus 10 according to the fifth embodiment is the same as the information processing apparatus 10 according to the first embodiment except that when the selected line is deleted, a message (erase message) to be further deleted is notified. Therefore, the contents different from the first embodiment will be described, and redundant description will be omitted.

  Briefly, in the fifth embodiment, when erasure is touched (selected) in the erasure confirmation menu 202, a display frame 210 describing a message to erase the selected line is displayed on the touch screen 100.

  FIG. 15 is an illustrative view showing one example of a touch screen 100 in the fifth embodiment. In the touch screen 100 shown in FIG. 4B, when erasing is touched in the erasure confirmation menu 202, as shown in FIG. 15, a message on the touch screen 100 indicating that the selected line is erased is displayed. A frame 210 is displayed above the erase confirmation menu 202. However, the position where the display frame 210 is displayed need not be limited. For example, it may be displayed at the center of the touch screen 100.

  Hereinafter, the handwriting control process of the CPU 12 in the fifth embodiment will be described with reference to a flowchart.

  As shown in FIG. 16, in the handwriting control process of FIG. 11, the CPU 12 executes the process of step S73 after step S71 and step S49 between step S43 and step S47. Therefore, when erasure is selected in step S43, an erasure message is displayed in step S71. Here, under the instruction of the CPU 12, the drawing control circuit 18 reads out the image generation data 334, and generates image data corresponding to the touch screen 100 including the display frame 210 in which a message to delete the selected line is described. And output to the display 22. In step S47, the selected line is erased, and in step S49, the erase confirmation menu 202 is erased. Further, in step S73, the delete message, that is, the display frame 210 is deleted, and the process proceeds to step S51. Since the process after step S51 is the same as the handwriting control process of 1st Example, the overlapping description is abbreviate | omitted.

  Also in the fifth embodiment, the lines can be erased accurately as in the first to fourth embodiments.

  The fifth embodiment can also be applied to the second to fourth embodiments.

  The screen configuration and the like given in the above-described embodiments are examples, and can be appropriately changed according to the actual product.

10 ... Information processing device 12 ... CPU
14 ... RAM
DESCRIPTION OF SYMBOLS 16 ... Touch panel control circuit 18 ... Drawing control circuit 20 ... Touch panel 22 ... Display 100 ... Touch screen 102 ... Pen button 104 ... Eraser button 110 ... Eraser cursor 120 ... Pen 200 ... Erase mode selection menu 202 ... Erase confirmation menu 210 ... Display frame

Claims (9)

An information processing apparatus that draws a handwritten image handwritten using an input means and displays the image on a display device,
Input detection means for detecting an input instruction by the input means;
According to the previous entry force instruction, first control means for displaying a line according to the locus to instruction completion from the instruction start, the display device for each line,
Mode selection means for selecting a first erasing mode for erasing a portion indicated by the input instruction or a second erasing mode for erasing the line indicated by the input instruction according to a user instruction; and
When the second erase mode is selected, a confirmation menu is displayed for allowing the user to confirm whether or not the line indicated by the input instruction is to be erased, and the input instruction for executing the erase is detected via the confirmation menu. An information processing apparatus comprising second control means for erasing the line when it is done . The information processing apparatus according to claim 1, wherein the second control unit displays the line indicated by the input instruction in a recognizable manner. Said second control means is blinked line indicated by the input instruction, the information processing apparatus according to claim 2, wherein. Said second control means is displayed in gray-out lines by the input instruction indicates information processing apparatus according to claim 2, wherein. Said second control means to display by changing the thickness of the line indicated by the input instruction, the information processing apparatus according to claim 2, wherein. Said second control means to display by changing the color of the line indicated by the input instruction, the information processing apparatus according to claim 2, wherein. By the second control unit, before erasing the line the input instruction indicates, further comprising erasing the notification means for notifying to erase the line to the user, information of any one of claims 1 to 6 Processing equipment. An information processing program executed by a computer for displaying content handwritten using an input means on a display device,
A processor of the computer;
Input detection means for detecting an input instruction by the input means;
According to the previous entry force instruction, first control means for displaying a line according to the locus to instruction completion from the instruction start, the display device for each line,
Mode selection means for selecting a first erasing mode for erasing a portion indicated by the input instruction or a second erasing mode for erasing the line indicated by the input instruction according to a user instruction; and
When the second erasing mode is selected, a confirmation menu for confirming whether or not to erase the line indicated by the input instruction is displayed, and the erasing execution input instruction is detected via the confirmation menu. And an information processing program that functions as second control means for erasing the line . An information processing method for a computer comprising: input detection means for detecting an input instruction by an input means; and display means for displaying contents handwritten using the input means,
(A) according to the entering force instruction, and displaying a line according to the locus to instruction completion from the instruction start, on said display means for each line,
(B) selecting a first erase mode for erasing a portion indicated by the input instruction or a second erase mode for erasing the line indicated by the input instruction according to a user instruction ;
(C) When the second erasing mode is selected, a confirmation menu for allowing the user to confirm whether or not to erase the line indicated by the input instruction is displayed, and the erasing execution input instruction is displayed via the confirmation menu. An information processing method including a step of erasing the line when a line is detected .

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