JP3786906B2 - Information terminal device and program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technique for performing character operation processing such as character decoration on characters displayed on an information terminal device having a pen input function.
[0002]
[Prior art]
PDAs (Personal Digital Assistants) are widely used among businessmen as portable information terminal devices. A PDA is a small palm-sized device, and generally has a touch panel that is configured by overlapping a flat display device (liquid crystal display device, etc.) and a transparent tablet as an input / output device because of its size restriction. .
[0003]
Character input in a PDA may be performed by connecting a hardware keyboard. Generally, handwritten character input for analyzing characters by a locus traced with a pen or a software keyboard is displayed on a display device. This is done by tapping the position of the tablet on it with a pen. Character operations such as character decoration on the input characters are also performed by operating the tablet with a pen. In other words, the tablet will be used as an almost universal input device.
[0004]
By the way, when a character operation such as a character decoration is performed on a character that is input on a PDA and displayed on a display device, conventionally, a range is specified by tracing the position of the character to be a character operation with a pen, After that, the menu was opened and the type of character operation to be executed was specified. This method is substantially the same as a method of performing character operations such as character decoration on characters displayed on a personal computer or the like.
[0005]
[Problems to be solved by the invention]
In this way, character input is performed by a method different from that performed by a personal computer by utilizing the structural features of the PDA. Nevertheless, character operations such as character decoration are performed in a manner that is not substantially different from that performed by a personal computer, and none of the structural features are utilized.
[0006]
In addition, PDAs are often used to carry out simple recordings while being taken away from home, so it is desirable to easily perform not only character input but also character operations. However, with a conventional operation method that is the same as that of a personal computer, the user may find it complicated to perform character operations such as character decoration.
[0007]
An object of the present invention is to make it possible to easily perform character operations in a simple procedure in an information terminal device including a touch panel configured by superimposing a display device for displaying characters and a tablet.
[0008]
[Means for Solving the Problems]
  In order to achieve the above object, an information terminal device according to the first aspect of the present invention provides:
  Equipped with a touch panel composed of a tablet and a display device that displays characters at predetermined positionsThe character decoration corresponding to the locus inputted by pressing the tablet is added to the character displayed on the display device.In the information terminal device,
  TabletInput by pressingWasLocus positionTheIn time seriesanalysisTrajectory analysis means for
A speed change for analyzing a change in input speed of the trajectory based on a time-series change of the input position of the trajectory with respect to the trajectory whose input position is analyzed by the trajectory analyzing means.Analysis means;
  For the trajectory whose input position is analyzed by the trajectory analyzing means, the input position of the trajectory andCharacter position analysis means for analyzing the positional relationship with the characters displayed on the display device;
  According to the analysis result of the character position analysis means, among the characters displayed on the display deviceAdd text decorationAn operation target character specifying means for specifying a target character;
According to the change in the input speed of the trajectory analyzed by the speed change analyzing means and the input position of the trajectory for the character specified by the operation target character specifying means, it should be added to the character specified by the operation target character specifying means. A decoration type specifying means for specifying a type of text decoration from a plurality of types of text decorations prepared in advance;
The type of character decoration specified by the decoration type specifying means,For the character specified as the operation target by the operation target character specifying meansAddCharacter operation means
  It is characterized by providing.
[0012]
In the above information terminal device,
Even when the tablet is pressed a plurality of times, the trajectory analyzing means analyzes the plurality of times of pressing as a single trajectory if the time interval of each pressing is within a predetermined time. can do.
[0013]
In this way, even if the tablet is pressed multiple times, if the time interval is within a predetermined time, it is possible to input a complicated trajectory by analyzing it as a single trajectory, and a distinguishable trajectory The number of types increases. As a result, various types of character operations can be performed.
[0014]
  The information terminal device
  About the trajectory whose input position is analyzed by the trajectory analyzing means,When the tablet is pressedIn time seriesTo analyzeTo analyze the change of the pressed state of the tabletA pressing state analysis means may be further provided. In this case,
  SaidDecoration type identification meansIsFurther, according to the change in the pressed state analyzed by the pressed state analyzing unit, the type of character decoration to be added to the character specified by the operation target character specifying unit is specified.be able to.
[0015]
The information terminal device
It may further comprise a decoration addition determining means for determining whether or not the character decoration of the type specified by the decoration type specifying means has already been added to the character specified as the operation target by the operation target character specifying means. Good. In this case,
The character operation means is
When it is determined by the decoration addition determining means that no character decoration has been added yet, the character decoration of the type specified by the decoration type specifying means is changed to the character specified as the operation target by the operation target character specifying means. Can be added to
When it is determined by the decoration addition determining means that a character decoration has already been added, the character decoration added to the character specified as the operation target by the operation target character specifying means can be deleted.
[0020]
  In order to achieve the above object, the present invention2The program related to
  Characters displayed on the display device according to a trajectory input by pressing the tablet are executed in a computer device including a touch panel configured by overlapping a display device that displays characters at a predetermined position and a tablet. A computer program for adding to the computer device,
  Trajectory analysis means for analyzing the position of the trajectory input by pressing the tablet in time series,
  Speed change analysis means for analyzing a change in input speed of the trajectory based on a time-series change of the input position of the trajectory with respect to the trajectory whose input position is analyzed by the trajectory analysis means;
  Character position analysis means for analyzing the positional relationship between the input position of the locus and the character displayed on the display device, with respect to the locus whose input position is analyzed by the locus analysis means,
  In accordance with the analysis result of the character position analyzing means, an operation target character specifying means for specifying a character to which a character decoration is added among characters displayed on the display device
  According to the change in the input speed of the trajectory analyzed by the speed change analyzing means and the input position of the trajectory for the character specified by the operation target character specifying means, it should be added to the character specified by the operation target character specifying means. Decoration type specifying means for specifying the type of character decoration from a plurality of types of character types prepared in advance;
  A character operation means for adding the character decoration of the type specified by the decoration type specifying means to the character specified as the operation target by the operation target character specifying means;
  It is made to function as.
  The above program
  Press state analysis means for analyzing a change in the state in which the tablet is pressed by analyzing the state in which the tablet is pressed in a time series with respect to the trajectory whose input position is analyzed by the trajectory analysis means. It can be made to function further. In this case,
  The decoration type specifying unit may further specify a type of character decoration to be added to the character specified by the operation target character specifying unit according to the change in the pressed state analyzed by the pressed state analyzing unit. it can.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
[0022]
FIG. 1 is a diagram showing an external appearance of an information terminal device applied to this embodiment. The information terminal device 1 shown in FIG. 1 is a PDA as an example, and includes a touch panel 14 where information is displayed and information is input by a pressing operation with the pen 2. The information terminal device 1 may be a larger device called a tablet PC in addition to a small device such as a PDA. Moreover, it may be general-purpose or dedicated to specific work.
[0023]
FIG. 2 is a block diagram of the information terminal device 1 of FIG. As shown in the figure, the information terminal device 1 includes a CPU 11 (Central Processing Unit), a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, a touch panel 14 including a display device 14a and a tablet 14b. And an external I / F (InterFace) 15, which are connected to each other via a bus 10.
[0024]
The CPU 11 executes a program or the like shown in a flowchart to be described later stored in the ROM 12, and executes various processes including character operations such as character decoration. Moreover, each part of the information terminal device 1 is controlled. The ROM 12 is a non-volatile memory that stores fixed data such as a character operation table, which will be described later, and a program of the CPU 11. The RAM 13 is used as a work area when the CPU 11 executes a program.
[0025]
The touch panel 14 is configured by overlaying a transparent tablet (digitizer) 14b on a flat display device 14a such as a liquid crystal display device or an organic EL display device. The display device 14a displays a character (with a character decoration) or the like as a processing result by the CPU 11. An example of the display screen will be described later. The tablet 14 b is a pointing device that inputs the coordinates of the position pressed by the pen 2 and the writing pressure to the CPU 11. The external I / F 15 is a device for exchanging data with an external device.
[0026]
The tablet 14b performs coordinate input even when the tablet 14b is not pressed with the pen 2, but it is assumed that the tablet 14b is always pressed with the pen 2. In addition, as an information input operation using the pen 2, “tapping” means that the tablet 14 b is tapped with the pen 2. “Tracing” refers to moving the pen 2 while being pressed against the tablet 14b. “Stroke” is a concept including “tap” and “trace”.
[0027]
When the tablet 14b is tapped with the pen 2, the coordinates of the tapped position and the writing pressure are input. When the tablet 14b is traced with the pen 2, the coordinates of the traced trajectory and the writing pressure are input in time series. When the time interval of one “tap” and / or “tracing” operation is within a predetermined time, even if the pressing operation of the tablet 14b is performed a plurality of times, the operation of the plurality of times is 1 It will be recognized as one stroke.
[0028]
FIG. 3 is a diagram illustrating an example of a display screen on the display device 14a. On the display device 14a, a MEMO tab 141, an address tab 142, a ToDo tab 143, and a schedule tab 144 are displayed. By tapping positions corresponding to the tabs 141 to 144 of the tablet 14b, the tapped tabs 141 to 144 are tapped. The information content corresponding to can be displayed. FIG. 3 shows a case where the MEMO tab 141 is tapped and the MEMO screen is displayed.
[0029]
A plurality of inter-line lines 145 are displayed on the MEMO screen. The characters are displayed in a line 146 defined by two consecutive interline lines 145. Each row 146 is divided into an upper line 145 (the first line is the lower position of the tabs 141 to 144 instead of the line 145) and the lower line 145, and is divided into an upper part, a middle part and a lower part. Divided. The position of the stroke with respect to the position of the character is determined depending on the ratio of one stroke in the upper part, the middle part, or the lower part of the line 146. Depending on the relationship between the type and position of the stroke, the position of the character relative to the stroke may be determined to be the entire character. Further, it may be determined that the stroke position is independent of the character position.
[0030]
4 and 5 are diagrams showing a character operation table for specifying the type of character operation to be executed with respect to the input to the tablet 14b by the pen 2. FIG. As shown in the figure, in the character operation table, the type of character operation is registered in three dimensions: the stroke of the input by the pen 2, the position on the tablet 14b where the input by the pen 2 is performed, and the writing pressure of the input by the pen 2. It is a table to be. 4 (a), 4 (b), 5 (c), 5 (d), and 5 (e) indicate that the table is not a separately prepared table but the third dimension of the table. I mean.
[0031]
According to this character operation table, for example, the stroke is a horizontal straight line and the tracing speed is slow, the stroke position is the upper position of the character to be operated, and there is no change in a state where the writing pressure is weak In such a case, an upper line with a fine line is attached to the character to be operated. If the stroke is a horizontal straight line and the tracing speed is slow, the stroke position is the middle position of the character to be operated, and there is no change due to strong writing pressure, the character to be operated is deleted. To be.
[0032]
In the character operation tables of FIGS. 4 and 5, deletion, undo, redo, character decoration cancellation, and character decoration retry are registered as operations performed on characters displayed in addition to the character decoration. However, undo is a process that cancels the previous operation, and redo is a process that undoes the previous undo operation. If the character decoration is erased by the previous operation, the character decoration is again displayed. An operation for attaching is performed.
[0033]
Canceling text decoration is a process that deletes text decoration attached to the character to be operated, and retrying text decoration is changing the text decoration attached to the character to be operated to another type of text decoration. It is a process to change. In this case, regardless of the positional relationship with the stroke, writing pressure, and characters, the user opens the menu screen, selects a desired type of character decoration from the menu screen, and operates the selected character decoration as a character to be operated. Can be attached. The character operation tables of FIGS. 4 and 5 include a part where no character operation type is registered at all depending on the positional relationship with the stroke, writing pressure, and character. This is a character operation not intended by the user. This is to prevent it.
[0034]
In order to realize undo and redo processing, the RAM 13 is provided with a stack area. There are two types of stacks, first and second. Each time a character operation (by processing other than undo and redo) is performed, information relating to the performed character operation is accumulated in the first stack. When performing the undo process, information is extracted from the top of the first stack, the state before the previous character operation is performed based on the information, and the information extracted from the top of the first stack is stored in the first stack. Stack on 2 stacks. When performing the redo process, information is extracted from the top of the second stack, the previous undo process is canceled based on the information, and the extracted information is loaded on the first stack again.
[0035]
As described above, when the tablet 14b is traced with the pen 2, the coordinate of the traced locus and the writing pressure are input in chronological order. The pressure is analyzed in time series, and as shown in the character operation tables of FIGS. 4 and 5, the stroke determines the speed or the strength of the writing pressure. Next, stroke analysis and writing pressure analysis will be described using typical techniques.
[0036]
FIG. 6 is a diagram illustrating an example of a technique for analyzing a stroke caused by a pen operation. As shown in FIG. 6A, when a straight line is to be drawn, the tablet 14b is traced with the pen 2 at a substantially constant speed except for a fixed period at the beginning and end of drawing. On the other hand, as shown in FIG. 6B, when a wavy line is to be drawn, the speed at which the tablet 14b is traced with the pen 2 also changes during periods other than the start and end of drawing. The stroke is analyzed not only by the position of the coordinate input in time series from the tablet 14b but also by the speed change in time series when drawing a line. The change in the speed of drawing a line is also referred to when judging whether to draw an ellipse or a rectangle.
[0037]
FIG. 7 is a diagram for explaining an example of a technique for analyzing writing pressure by a pen operation. As shown in FIG. 7A, for example, when a user draws a straight line without being conscious of changing the writing pressure, it is almost constant except for a certain period at the beginning and end of drawing. The tablet 14b is traced with the pen 2 by the writing pressure. If a period excluding a certain period at the start and end of drawing is a period to be analyzed and the amount of change in writing pressure during that period is equal to or less than a predetermined threshold, it is determined that there is no change in writing pressure.
[0038]
As shown in FIG. 7B, when the user draws a straight line in consideration of weakening the writing pressure, the writing pressure peak comes in the first half of the period during which the straight line is drawn. If the relationship from the beginning of drawing to the peak of writing pressure is t1, and the period from the peak of writing pressure to the end of drawing is t2, if t1 <α × t2 (α is a predetermined constant smaller than 1), It is determined that the pressure has changed from strong to weak (except when it is determined that there is no change in the writing pressure by the method shown in FIG. 7A).
[0039]
On the other hand, as shown in FIG. 7C, when the user draws a straight line in consideration of increasing the writing pressure, the peak of the writing pressure comes in the latter half of the period during which the straight line is drawn. If the relationship between t1> β × t2 (β is a predetermined constant greater than 1) is established, where t1 is the period from the start of drawing to the peak of writing pressure and t2 is the period from the peak of writing pressure to the end of drawing, It is determined that the pressure has changed from weak to strong (except when it is determined that the writing pressure is not changed by the method shown in FIG. 7A).
[0040]
Alternatively, the writing pressure can be analyzed as follows. That is, a graph is drawn based on the temporal change in writing pressure, and the area created by the graph in each of the first half and the second half is obtained. If this difference is within a predetermined threshold, there is no change in writing pressure.If the first half exceeds the predetermined threshold, the writing pressure has changed from strong to weak. If the pressure exceeds the threshold value, it can be determined that the writing pressure has changed from weak to strong. This technique can also be used to analyze stroke speed.
[0041]
Hereinafter, a process for performing a character operation in the information terminal device 1 of this embodiment will be described. In order to perform character operations such as character decoration, it is necessary to input characters and display the input characters on the display device 14a. However, the procedure for character input is the same as that applied to conventional information terminal devices, and various methods such as input from a software keyboard and input by handwritten character recognition are used.
[0042]
FIG. 8 is a flowchart showing processing executed by the CPU 11 for performing character operations such as character decoration in the information terminal device 1 of this embodiment. The process shown in this flowchart is executed in parallel with other processes in a state where a screen capable of inputting and displaying characters as shown in FIG. 3 is displayed on the display device 14a. First, the CPU 11 determines whether or not the tablet 14b is pressed by the pen 2 and the pressed coordinate position and the writing pressure are input (step S11). If there is no input of a coordinate position and writing pressure, the process of step S11 is repeated and it waits for the tablet 14b to be pressed with the pen 2. FIG.
[0043]
When the coordinate position pressed by the pen 2 and its writing pressure are input from the tablet 14b, the CPU 11 analyzes the stroke based on the temporal change of the input coordinate position (step S12). Further, the pen pressure is analyzed based on the temporal change of the inputted pen pressure (step S13). Further, when a character is displayed on the display device 14a, the relationship between the position of the displayed character and the position of the stroke is analyzed (step S14). According to the analysis result of step S14, the character to be subjected to character operation is specified (step S15).
[0044]
Next, the CPU 11 refers to the character operation table shown in FIGS. 4 and 5 according to the stroke, writing pressure, and the positional relationship with the character analyzed in steps S12 to S14, and performs the character operation (character decoration) to be executed. Are read out (step S16). Here, the CPU 11 determines whether or not any kind of character operation has been read from the character operation table (step S17). If nothing can be read out as the type of character operation, the process directly returns to step S11.
[0045]
If any character operation type can be read, the CPU 11 determines whether or not the read character operation type is "Undo" (step S18). In the case of “Undo”, the character that is the target of the character operation is not the character specified in step S15, but the character that has been subjected to the character operation immediately before. Processing for canceling the character operation is performed and displayed on the display device 14a (step S19). And it returns to the process of step S11.
[0046]
If the read character operation type is not “Undo”, the CPU 11 determines whether or not the read character operation type is “Redo” (step S20). In the case of “Redo”, the character to be dealt with by the character operation is not the character specified in step S15, but the character that has been undoed immediately before, and the character is redo processed (immediately before). Processing for canceling undo) is performed and displayed on the display device 14a (step S21). And it returns to the process of step S11.
[0047]
When the read character operation type is not “redo”, the CPU 11 determines whether or not the read character operation type is “character deletion” (step S22). If it is “character deletion”, the CPU 11 deletes the character that is the object of the character operation from the display screen and displays it on the display device 14a (step S23). And it returns to the process of step S11.
[0048]
When the read character operation type is not “character deletion”, the CPU 11 determines whether or not the read character operation type is “character decoration cancel” (step S24). If it is “character decoration cancellation”, the process proceeds to step S 29 described later. When it is not “character decoration cancellation”, the CPU 11 determines whether or not the read character operation type is “character decoration retry” (step S25). If it is “retry text decoration”, the process proceeds to step S30 described later.
[0049]
When the read character operation type is not “character decoration retry”, it is a case where some kind of character decoration is read. In this case, the CPU 11 determines whether or not the read type character decoration is the same as that already attached to the character to be subjected to the character operation according to the positional relationship analyzed in step S14. (Step S26).
[0050]
If the same character decoration is attached, the CPU 11 deletes the character decoration from the character that is the object of the character operation, and displays it on the display device 14a (step S27). And it returns to the process of step S11. If the same character decoration is not attached, the CPU 11 attaches the character decoration to the character that is the object of the character operation, and displays it on the display device 14a (step S28). And it returns to the process of step S11.
[0051]
In step S29, the CPU 11 erases all kinds of character decorations attached to the character that is the object of the character operation, and causes the display device 14a to display characters without any character decoration. And it returns to the process of step S11. In step S30, the CPU 11 opens a menu for character decoration selection and displays it on the display device 14a. The user taps the tablet 14b with the pen 2 to select a desired type of character decoration (step S31). The CPU 11 adds the selected character decoration to the character that is the target of the character operation, and displays it on the display device (step S32). And it returns to the process of step S11.
[0052]
In addition, when character deletion is performed at step S23, when character decoration is deleted at step S27 or S29, and when character decoration is applied at step S28 or S32, in preparation for the next undo process, Information related to character deletion, character decoration erasure, or character decoration provision is loaded on the first stack. The undo process is performed using the information loaded on the first stack, and the redo process is performed using the information loaded on the second stack in the undo process.
[0053]
Hereinafter, in the information terminal device 1 of this embodiment, an example of a specific procedure for performing character operations such as character decoration will be described. FIGS. 9A to 9F are diagrams illustrating examples of specific procedures for performing character operations such as character decoration. FIGS. 10A to 10D are diagrams illustrating a specific procedure for performing character decoration retry (changing the type of character decoration).
[0054]
As shown in the left diagram of FIG. 9A, the position on the tablet 14b corresponding to the lower third of the line 146 on which the characters “Aiueo” are displayed is quickly and substantially constant with the pen 2. Suppose you were traced by. The writing pressure is weak and constant. The character that is the target of the character operation is specified as “Aiueo” in the figure by the stroke position. Referring to the character operation tables of FIGS. 4 and 5, since “underline (extremely fine)” is registered as the type of character operation, as shown in the right diagram of FIG. An underline 201 is displayed under “Aeio”.
[0055]
As shown in the left diagram of FIG. 9B, the position on the tablet 14b corresponding to one third of the middle part of the line 146 in which the characters “Aiueo” are displayed is quickly and substantially constant with the pen 2. Suppose that The writing pressure is weak and constant. The character that is the target of the character operation is specified as “Aiueo” in the figure by the stroke position. Referring to the character operation tables of FIG. 4 and FIG. 5, since the “strikethrough” is registered as the character operation type, as shown in the right side of FIG. A strikethrough 202 is added and displayed.
[0056]
As shown in the left diagram of FIG. 9C, the position on the tablet 14b corresponding to the upper third of the line 146 where the characters “Aiueo” are displayed is slowly and almost constant with the pen 2. Suppose you were traced at a speed. The writing pressure is weak and constant. The character that is the target of the character operation is specified as “Aiueo” in the figure by the stroke position. Referring to the character operation tables of FIGS. 4 and 5, since “upper line (thin)” is registered as the character operation type, as shown in the right diagram of FIG. 9C, the target character “ A thin upper line 203 is displayed on the top of “Aiueo”.
[0057]
As shown in the left diagram of FIG. 9D, the position on the tablet 14b corresponding to one third of the middle part of the line 146 in which the characters “Aiueo” are displayed is slowly and substantially constant with the pen 2. Suppose you were traced. The writing pressure is assumed to be strong and constant. The character that is the target of the character operation is specified as “Aiueo” in the figure by the stroke position. Referring to the character operation tables of FIGS. 4 and 5, since “deletion of character string” is registered as the character operation type, as shown in the diagram on the right side of FIG. Is deleted from line 146.
[0058]
As shown on the left side of FIG. 9 (e), the position on the tablet 14b corresponding to the lower third of the line 146 with the thin line underline 204 attached and the characters “Aiueo” is displayed. 2 is traced slowly at a constant speed. It is assumed that the writing pressure is weak and constant. The character that is the target of the character operation is specified as “Aiueo” in the figure by the stroke position. Referring to the character operation tables of FIGS. 4 and 5, “underline (thin)” is registered, but since the target character “aiueo” has already been provided with a thin line underline 204, FIG. As shown in the diagram on the right side of (e), the underline 204 attached to the target character “Aiueo” is deleted.
[0059]
As shown in the figure on the left side of FIG. 9F, the left arrow is displayed by tracing the pen 2 on the tablet 14b with the thin line underline 204 attached to the character “Aiueo” in the previous operation. It is assumed that the character is drawn at a position unrelated to the character displayed on the device 14a. This left-pointing arrow indicates that an undo process is performed by referring to the character operation tables in FIGS. 4 and 5, and the character to be operated is identified as “Aiueo” in the figure in which the character operation was performed immediately before. . Therefore, as shown in the diagram on the right side of FIG. 9F, the operation immediately before the underline 204 is canceled, and the underline 204 attached to the characters “Aiueo” is deleted.
[0060]
As shown in FIG. 10 (a), the position on the tablet 14b corresponding to the entire line 146 in which the character “Aiueo” is displayed with an extra-fine underline 201 is quickly and substantially constant with the pen 2. Suppose that the writing pressure is weak and constant and a right arrow is drawn. This right-pointing arrow indicates that character decoration is retried by referring to the character operation tables of FIGS. The character to be operated is specified as “Aiueo” in the figure.
[0061]
Then, as shown in FIG. 10B, a character decoration selection menu 210 is opened and displayed on the display device 14a. Here, assuming that the position where “lower wave line” in the menu 210 is tapped with the pen 2, the “lower wave line” in the menu 210 is highlighted as shown in FIG. Further, a line type selection menu 220 is opened and displayed on the display device 14a. Here, assuming that the position displayed as “extra fine” in the menu 220 is tapped with the pen 2, as shown in FIG. The line 201 is changed to an extremely thin lower wavy line 205 and displayed on the display device 14a.
[0062]
As described above, in the information terminal device 1 of this embodiment, when an operation such as tracing or tapping performed using the pen 2 is input to the tablet 14b, the stroke of the pen input is analyzed, Analyze pressure. In addition, the positional relationship between the character displayed on the display device 14a and the stroke is analyzed, and further, the character to be subjected to character operation is specified. Here, based on the analysis results of stroke, writing pressure, and positional relationship, the type of character operation is read from the character operation table, and character operations such as character decoration are performed according to the read type of character operation. Made. That is, since the designation of the character to be subjected to the character operation and the designation of the type of character operation can be performed by one operation, various types of character operations can be easily performed by a simple procedure.
[0063]
Further, the positional relationship between the position of the stroke and the position of the displayed character is included in the analysis target of the pen input. By including this positional relationship, it is possible to attach different types of character decorations such as underline, strike-through line, and upper line by slightly changing the position of the stroke. For this reason, various meanings can be given to the character currently displayed on the display apparatus 14a by a user's intention.
[0064]
Further, when the type of character operation read from the character operation table is a character decoration, if the same character decoration is already attached to the character to be operated, the character decoration is deleted. For this reason, the operation for deleting the character decoration already attached to the character can be easily performed as in the case of attaching the character decoration. Furthermore, depending on the analysis results of stroke, writing pressure, and positional relationship, character deletion is read out as the type of character operation, and the target character is deleted. Can be done.
[0065]
By the way, the stroke of the input by the pen 2 is not only analyzed for the coordinate position but also for time-series changes. Further, even if the pen 2 is once separated from the tablet 14b, it is determined as one stroke if it is within a predetermined time, so that a complicated trajectory is recognized as a series of strokes. As described above, various types of character operations can be performed by changing the manner of input by the pen 2 in various ways.
[0066]
Further, the writing pressure of the input by the pen 2 is not only analyzed in magnitude, but also analyzed in time series. For this reason, various types of character operations can be performed by changing the writing pressure for pressing the pen 2 against the tablet 14b in various strokes in the same manner as the stroke.
[0067]
Regardless of the position where the character is displayed on the display device 14a, if the left arrow is drawn by tracing the tablet 14b with the pen 2, the undo process and the redo process are drawn if a right arrow is drawn. For this reason, when the character operation performed immediately before is processed differently from the desired character operation, the processing can be easily canceled. On the other hand, the canceled character operation can be easily restored. By including such undo and redo processes, it becomes possible to perform character operations more easily.
[0068]
On the other hand, when the character is displayed on the display device 14a and the tablet 2b is traced with the pen 2 and a left arrow is drawn, the character decoration is canceled. For this reason, it is possible to delete all the character decorations attached to the character to be operated with a simple operation. Similarly, if a right-pointing arrow is drawn, the character decoration will be retried. In this case, if the user selects the type of character decoration according to the menu 210 or the like, the character decoration attached to the character to be operated can be easily changed to a desired type of character decoration.
[0069]
The present invention is not limited to the above-described embodiment, and various modifications and applications are possible. Hereinafter, modifications of the above-described embodiment applicable to the present invention will be described.
[0070]
In the above embodiment, a character operation table is prepared in order to identify the type of character operation to be executed according to the analysis result of stroke, writing pressure, and positional relationship, and any one of the character operation types according to the analysis result Was being read out. On the other hand, instead of using such a table format, the program may be branched according to the analysis result of stroke, writing pressure, and positional relationship, and the type of character operation to be executed may be specified.
[0071]
In the above embodiment, the type of character operation is determined by analyzing the stroke input by the pen 2, the positional relationship between the position of the character and the stroke position, and the writing pressure input by the pen 2. . However, if the tablet 14b does not have a function of inputting writing pressure (even if it exists), the character is analyzed according to two of the analysis result of the stroke and the analysis result of the positional relationship between the character position and the stroke position. The type of operation may be determined.
[0072]
Further, if the tablet 14b has a function of inputting a pressing state other than the writing pressure, the type of character operation can be determined according to the result of analyzing the other pressing state. Here, other pressing states include the distance between the tip of the pen 2 and the tablet 14b, the angle formed by the pen 2 and the tablet 14b, the depth of the pen 2, and the like.
[0073]
In the above-described embodiment, it is assumed that the type of character decoration attached to the character to be operated is specified with reference to the character operation table of FIGS. 4 and 5 according to the analysis result of the stroke and writing pressure by the operation of the pen 2. It was. However, since the speed of moving the pen 2 and the writing pressure are different for each user, character decorations that are not intended by the user may be attached. On the other hand, it is very complicated for the user to adjust his / her pen operation to the information terminal device 1.
[0074]
Therefore, for example, when undo processing, character decoration cancellation, or character decoration retry is performed in the next process with some character decoration, the stroke or pen pressure analysis when the character decoration is first attached is analyzed. The result and the type of character decoration affixed after undo processing, etc. are stored in association with each other, and the criteria for determining the speed of the stroke and the strength of the writing pressure are changed based on the stored data. It is good.
[0075]
When the user starts using the information terminal device 1 (even after the start), for example, “draw a straight line slowly and strongly”, “draw an ellipse surrounding the displayed characters. It is also possible to sample data of various types of pen operations according to a question such as “Please”, and to change the criteria for determining the strength of the writing pressure based on the sampling result.
[0076]
In the above embodiment, the program and table for performing character operations such as character decoration are described as being stored in the ROM 12 in advance. However, this program may be stored in a computer-readable recording medium such as a CD-ROM or DVD-ROM and distributed independently of the hardware. You may store and provide in the memory card which can be attached or detached to the information terminal device 1. FIG. Alternatively, these processing programs may be stored in a fixed disk device of a Web server device on the Internet and distributed through the Internet.
[0077]
【The invention's effect】
As described above, according to the present invention, it is possible to easily perform a character operation by a simple procedure.
[Brief description of the drawings]
FIG. 1 is a diagram showing an external appearance of an information terminal device applied to an embodiment of the present invention.
FIG. 2 is a block diagram of an information terminal device applied to the embodiment of the present invention.
FIG. 3 is a diagram showing an example of a display screen of the information terminal device applied to the embodiment of the present invention.
FIG. 4 is a diagram showing a character operation table for specifying the type of character operation.
FIG. 5 is a diagram showing a character operation table for specifying the type of character operation.
FIG. 6 is a diagram illustrating a method for analyzing a stroke caused by a pen operation.
FIG. 7 is a diagram illustrating a technique for analyzing writing pressure by a pen operation.
FIG. 8 is a flowchart showing processing for performing a character operation such as character decoration in the embodiment of the present invention.
FIG. 9 is a diagram illustrating a specific procedure for performing a character operation such as character decoration in the embodiment of the present invention.
FIG. 10 is a diagram illustrating a specific procedure for retrying character decoration (changing the type of character decoration) in the embodiment of the present invention.
[Explanation of symbols]
1 Information terminal equipment
2 pens
11 CPU
12 ROM
13 RAM
14a display device
14b tablet
14 Touch panel
15 External I / F

Claims (6)

An information terminal including a touch panel configured by overlapping a display device that displays characters at a predetermined position and a tablet, and adding a character decoration corresponding to a locus input by pressing the tablet to the characters displayed on the display device In the device
Trajectory analysis means for analyzing the position of the trajectory input by pressing the tablet in time series,
Speed change analysis means for analyzing a change in input speed of the trajectory based on a time-series change of the input position of the trajectory with respect to the trajectory whose input position is analyzed by the trajectory analysis means;
Character position analysis means for analyzing the positional relationship between the input position of the locus and the character displayed on the display device, with respect to the locus whose input position is analyzed by the locus analysis means,
In accordance with the analysis result of the character position analyzing means, an operation target character specifying means for specifying a character to which a character decoration is added among characters displayed on the display device;
According to the change in the input speed of the trajectory analyzed by the speed change analyzing means and the input position of the trajectory for the character specified by the operation target character specifying means, it should be added to the character specified by the operation target character specifying means. A decoration type specifying means for specifying a type of text decoration from a plurality of types of text decorations prepared in advance;
An information terminal device comprising: character operation means for adding a character decoration of a type specified by the decoration type specifying means to a character specified as an operation target by the operation target character specifying means. Even when the tablet is pressed a plurality of times, the trajectory analyzing means analyzes the plurality of times of pressing as a single trajectory if the time interval between pressings is within a predetermined time. The information terminal device according to claim 1, wherein: For the trajectory whose input position is analyzed by the trajectory analyzing means, further comprising a pressing state analyzing means for analyzing a change in the pressed state of the tablet by analyzing the pressed state of the tablet in time series,
The decoration type specifying means further specifies the type of character decoration to be added to the character specified by the operation target character specifying means according to the change of the pressed state analyzed by the pressed state analyzing means. The information terminal device according to claim 1. A decoration addition determining means for determining whether the character decoration of the type specified by the decoration type specifying means has already been added to the character specified as the operation target by the operation target character specifying means;
The character operation means is
When the decoration addition determining means determines that the character decoration has not yet been added, the character decoration of the type specified by the decoration type specifying means is changed to the character specified as the operation target by the operation target character specifying means. Add to
The character decoration added to the character specified as the operation target by the operation target character specifying unit is deleted when it is determined by the decoration addition determination unit that the character decoration has already been added. Item 4. The information terminal device according to any one of Items 1 to 3. Characters displayed on the display device according to a trajectory input by pressing the tablet are executed in a computer device including a touch panel configured by overlapping a display device that displays characters at a predetermined position and a tablet. A computer program for adding to the computer device,
Trajectory analysis means for analyzing the position of the trajectory input by pressing the tablet in time series,
Speed change analysis means for analyzing a change in input speed of the trajectory based on a time-series change of the input position of the trajectory with respect to the trajectory whose input position is analyzed by the trajectory analysis means;
Character position analysis means for analyzing the positional relationship between the input position of the locus and the character displayed on the display device, with respect to the locus whose input position is analyzed by the locus analysis means,
In accordance with the analysis result of the character position analyzing means, an operation target character specifying means for specifying a character to which a character decoration is added among characters displayed on the display device;
According to the change in the input speed of the trajectory analyzed by the speed change analyzing means and the input position of the trajectory for the character specified by the operation target character specifying means, it should be added to the character specified by the operation target character specifying means. A decoration type specifying means for specifying the type of character decoration from a plurality of types of character prepared in advance;
A program for causing a character decoration of the type specified by the decoration type specifying means to function as a character operation means for adding to a character specified as an operation target by the operation target character specifying means. Press state analysis means for analyzing a change in the state in which the tablet is pressed by analyzing the state in which the tablet is pressed in a time series with respect to the trajectory whose input position is analyzed by the trajectory analysis means. Further function as
The decoration type specifying means further specifies the type of character decoration to be added to the character specified by the operation target character specifying means according to the change of the pressed state analyzed by the pressed state analyzing means. The program according to claim 5 .

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