JP2004078509A - Information terminal device, character operation processing method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily perform a character operation with a simple procedure in an information terminal device having a touch panel. <P>SOLUTION: In the information terminal device having the touch panel which is constituted by stacking a display device and a tablet, when a pen operation is inputted from the tablet (S11), its stroke is analyzed (S12), pen pressure is analyzed (S13), and positional relation between the stroke and the displayed character is analyzed (S14). The character of an operation object is specified by the positional relation between the stroke and the character, or the like (S15) to read out the type of a character operation to be executed from a table (S16). If the object character is decorated with the same character decoration as the readout character operation (S26), the character decoration is deleted from the object character (S27). If the same character decoration is not decorated, the object character is decorated with the character decoration (S28). Also, the processing, such as deletion of decoration from all character (S29), decoration with the selected character decoration (S32), character deletion (S23), undo (S19), and redo (S21), is performed. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD 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]
PDA (Personal Digital Assistants) is widely used by business people and the like as a portable information terminal device. The PDA is a palm-sized small device, and generally has a touch panel configured by stacking a flat display device (such as a liquid crystal display device) and a transparent tablet as an input / output device because of the size limitation. .
[0003]
Character input in the PDA may be performed by connecting a hardware keyboard, but in general, handwritten character input that analyzes characters based on a locus of a tablet 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, tablets will be used as almost universal input devices.
[0004]
By the way, when attempting to perform a character operation such as a character decoration on a character input on the PDA and displayed on the display device, conventionally, the position of the character to be subjected to the character operation is traced with a pen to specify a range, After that, the menu was opened and the type of character operation to be performed was specified. This method is substantially the same as the 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]
As described above, the character input is performed in the PDA by a method different from the method performed by a personal computer by taking advantage of its structural characteristics. Nevertheless, character operations such as character decoration are performed in substantially the same manner as performed by a personal computer, and no structural features are utilized.
[0006]
In addition, since the PDA is often used to carry out simple recordings while carrying it around, it is desirable to easily perform not only character input but also character operation. However, in the conventional operation method that is the same as that of the personal computer, the user sometimes feels troublesome in performing character operations such as character decoration.
[0007]
SUMMARY OF THE INVENTION It is an object of the present invention to enable a character operation to be easily performed in a simple procedure in an information terminal device including a touch panel configured by stacking 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 a first aspect of the present invention includes:
In an information terminal device including a touch panel configured by stacking a tablet and a display device that displays characters at predetermined positions,
Trajectory analysis means for analyzing a trajectory where the tablet is pressed,
Character position analysis means for analyzing the positional relationship between the position of the locus of the tablet pressed and the characters displayed on the display device,
According to the analysis result of the character position analysis unit, an operation target character identification unit that identifies a character to be subjected to a character operation among the characters displayed on the display device,
Character operation means for performing a character operation specified in accordance with the analysis result of the trajectory analysis means and the analysis result of the character position analysis means for a character specified by the operation target character specification means as an operation target;
It is characterized by having.
[0009]
In the information terminal device, when the user presses the tablet to perform a character operation on the displayed character, the pressed trajectory and the positional relationship between the position of the trajectory and the displayed character are analyzed. , And a character to be operated is specified. Here, a character operation is performed on the character specified as the operation target according to the analysis result of the trajectory and the positional relationship by the character operation means. Therefore, the user can easily perform a desired character operation only by performing a pressing operation on the tablet without performing a complicated procedure. In addition, since the analysis target includes the positional relationship between the position of the locus where the tablet is pressed and the characters being displayed, by slightly changing the position where the tablet is pressed, for example, underlining, strike-through Various character operations can be performed, such as attaching an upper line.
[0010]
In the above information terminal device,
The trajectory analysis means may be capable of analyzing the trajectory of the pressed tablet in time series. in this case,
The character operation means can perform different types of character operations on the character specified as the operation target according to a time-series difference in a locus of the tablet pressed.
[0011]
In this way, the trajectory of pressing the tablet is analyzed in time series, and different types of character operations are performed according to the difference in time series, so that various types of character operations can be performed simply by changing the mode of pressing the tablet. Will be able to do.
[0012]
In the above information terminal device,
The trajectory analysis means analyzes the plurality of presses as one trajectory even if the tablet is pressed a plurality of times, if the time interval between each press is within a predetermined time. can do.
[0013]
Even if the tablet is pressed a plurality of times as described above, if the time interval is within a predetermined time, it is possible to input a complicated trajectory by analyzing the trajectory as one trajectory. Types increase. Thus, various types of character operations can be performed.
[0014]
The information terminal device includes:
The tablet may further include a pressed state analyzing unit that analyzes a pressed state of the tablet. In this case,
The character operating means may further perform a character operation specified according to an analysis result of the pressed state analyzing means on the character specified as the operation target.
[0015]
In this case,
The pressing state analyzing means may be capable of analyzing the pressing state of the tablet in a time series. in this case,
The character operating means may perform different types of character operations on the character specified as the operation target according to a time series difference in a state where the tablet is pressed.
[0016]
As described above, the state in which the tablet is pressed is also analyzed, and the character operation is specified according to the analysis result, so that various character operations can be performed. By allowing the state in which the tablet is pressed to be analyzed in chronological order, the types of character operations that can be performed on the specified characters are further increased.
[0017]
In the above information terminal device,
The character operation performed by the character operation means on the character specified as the operation target may include a plurality of types of character decorations according to the analysis result.
[0018]
As described above, by allowing a plurality of types of character decorations to be performed as character operations, it is possible to give various meanings to characters displayed on the display device according to the user's intention.
[0019]
In order to achieve the above object, a character operation processing method according to a second aspect of the present invention is performed in an information terminal device including a touch panel configured by stacking a tablet and a display device that displays characters at predetermined positions. The method,
Analyzing the locus of the tablet pressed,
Analyzing the positional relationship between the position of the locus of the tablet pressed and the characters displayed on the display device,
According to the positional relationship between the position of the trajectory and the position of the character, specify a character to be subjected to a character operation among the characters displayed on the display device,
A character operation specified according to the locus and the positional relationship between the position of the locus and the position of the character is performed on the character specified as the target of the character operation
It is characterized by the following.
[0020]
In order to achieve the above object, a program according to a third aspect of the present invention includes:
A computer device having a touch panel configured by stacking a tablet and a display device that displays characters at predetermined positions,
Trajectory analysis means for analyzing a trajectory where the tablet is pressed,
Character position analysis means for analyzing the positional relationship between the position of the locus where the tablet is pressed and the characters displayed on the display device,
According to the analysis result of the character position analysis unit, an operation target character specification unit that specifies a character to be subjected to a character operation among the characters displayed on the display device, and
A character operation unit for performing a character operation according to the analysis result of the trajectory analysis unit and the analysis result of the character position analysis unit on the character specified as the operation target by the operation target character specification unit
It is characterized by functioning as
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0022]
FIG. 1 is a diagram showing an 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 on which information is displayed and information is input by a pressing operation with a pen 2. The information terminal device 1 may be a larger device called a tablet PC or the like in addition to a small device such as a PDA. Further, it may be a general-purpose one or a dedicated one for a specific task.
[0023]
FIG. 2 is a block diagram of the information terminal device 1 of FIG. As illustrated, the information terminal device 1 includes a touch panel 14 including a CPU 11 (Central Processing Unit), a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, 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 and the like shown in a later-described flowchart stored in the ROM 12 and executes various processes including character operations such as character decoration. Also, it controls each unit of the information terminal device 1. The ROM 12 is a non-volatile memory that stores fixed data such as a character operation table 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 superposing 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 pen pressure to the CPU 11. The external I / F 15 is a device for exchanging data with an external device.
[0026]
Note that 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 here. As an information input operation using the pen 2, “tap” means tapping the tablet 14b with the pen 2 lightly. “Tracing” refers to moving the pen 2 while pressing it on the tablet 14b. “Stroke” is a concept including “tap” and “tracing”.
[0027]
When the tablet 14b is tapped with the pen 2, the coordinates of the tapped position and the pen pressure are input. When the tablet 14b is traced with the pen 2, the coordinates of the traced locus and the pen pressure are input in a time series. When the time interval of one “tap” and / or “tracing” operation is within a predetermined time, even if the tablet 14b is pressed a plurality of times, the plurality of operations is one. Is 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 a position corresponding to each of the tabs 141 to 144 of the tablet 14b, the tapped tabs 141 to 144 are tapped. Can be displayed. FIG. 3 shows a case where the MEMO tab 141 is tapped and a MEMO screen is displayed.
[0029]
A plurality of line spacing lines 145 are displayed on the MEMO screen. Characters are displayed in a line 146 defined by two consecutive interline 145. Each of the rows 146 is divided into an upper interline 145 (the first row is a lower position of the tabs 141 to 144 instead of the interline 145) and a lower interline 145, and is divided into upper, middle and lower portions. Divided. The position of the stroke with respect to the position of the character is determined by whether the upper portion, the middle portion, or the lower portion of the line 146 includes one stroke. 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. In some cases, it is determined that the position of the stroke is not related to the position of the character.
[0030]
FIGS. 4 and 5 are diagrams showing a character operation table for specifying the type of character operation to be performed in response to the input to the tablet 14b by the pen 2. As shown in the figure, in the character operation table, the type of character operation is registered in three dimensions: the stroke of input by the pen 2, the position on the tablet 14b where the input by the pen 2 was performed, and the pen pressure of the input by the pen 2. It is a table to be performed. FIGS. 4 (a), 4 (b), 5 (c), 5 (d) and 5 (e) show that the tables are not prepared separately but are the third dimension of the tables. Means.
[0031]
According to this character operation table, for example, the stroke is a straight line in the horizontal direction, the tracing speed is slow, the position of the stroke is the upper position of the character to be operated, and there is no change in a state where the pen pressure is weak. In such a case, the character to be operated is provided with an upper line using a fine line. If the stroke is a straight line in the horizontal direction and the speed of tracing is slow, the position of the stroke is the middle position of the character to be operated, and if there is no change with strong pen pressure, the character to be operated is deleted Will do.
[0032]
In the character operation tables of FIGS. 4 and 5, deletion, undo, redo, cancellation of character decoration, and retry of character decoration are registered as operations to be performed on characters displayed other than character decoration. However, undo is a process for canceling the last operation, and redo is a process for undoing the last undo operation. An operation for attaching is performed.
[0033]
Character decoration cancellation is the process of deleting the character decoration attached to the character to be operated, and the character decoration retry is to replace the character decoration attached to the character to be operated with another type of character decoration. This is the process of changing. In this case, the user opens the menu screen and selects a desired type of character decoration from the menu screen, regardless of the positional relationship between the stroke, the pen pressure, and the character. Can be attached to In the character operation tables of FIG. 4 and FIG. 5, there is a portion in which the type of character operation is not registered at all depending on the stroke, the pen pressure, and the positional relationship with the character. This is to prevent that.
[0034]
A stack area is provided in the RAM 13 to realize the undo and redo processing. There are two types of stacks, first and second. Each time a character operation (by processing other than undo and redo) is performed, information on the performed character operation is stacked on the first stack. When performing the undo process, information is taken out from the top of the first stack, the state is returned to the state before the last character operation is performed based on the information, and the information taken out from the top of the first stack is taken out of the first stack. Stack on stack 2. When performing the redo process, information is taken out from the top of the second stack, the immediately preceding undo process is canceled based on the information, and the taken out information is stacked again on the first stack.
[0035]
As described above, when the tablet 14b is traced with the pen 2, the coordinates of the traced trace and the pen pressure are input in a time-series manner. The pressure and the pressure are analyzed in a time series, and as shown in the character operation tables in FIGS. 4 and 5, the stroke is determined to be the speed or the strength of the pen pressure. Next, the analysis of the stroke and the analysis of the pen pressure will be described using typical techniques.
[0036]
FIG. 6 is a diagram illustrating an example of a technique for analyzing a stroke by a pen operation. As shown in FIG. 6A, when trying to draw a straight line, the tablet 14b is traced with the pen 2 at a substantially constant speed except for a fixed period of time at the beginning and at the end of the drawing. On the other hand, as shown in FIG. 6B, when trying to draw a wavy line, 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 itself of the coordinates input in time series from the tablet 14b, but also by a time-series speed change when drawing a line. Changes in the speed at which lines are drawn are also used to determine whether to draw an ellipse or a rectangle.
[0037]
FIG. 7 is a diagram illustrating an example of a technique for analyzing pen pressure by pen operation. As shown in FIG. 7A, for example, when the user draws a straight line without being conscious of changing the pen pressure, the drawing is substantially constant except for a certain period of time at the beginning and at the end of the drawing. The tablet 14b is traced with the pen 2 by the pen pressure. If a period excluding a certain period from the start of drawing to the end of drawing is set as the analysis target period, and the amount of change in pen pressure during that period is equal to or less than a predetermined threshold, it is determined that there is no change in pen pressure.
[0038]
As shown in FIG. 7B, when the user draws a straight line with the intention of weakening the pen pressure, the peak of the pen pressure comes in the first half of the period during which the straight line is drawn. Assuming that a period from the start of drawing to the peak of the pen pressure is t1, and a period from the peak of the pen pressure to the end of the drawing is t2, if a relationship of t1 <α × t2 (α is a predetermined constant smaller than 1) holds, It is determined that the pressure has changed from high to low (except when it is determined that there is no change in pen 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 with the intention of increasing the pen pressure, the peak of the pen pressure comes in the latter half of the period during which the straight line is drawn. Assuming that a period from the beginning of drawing to the peak of the pen pressure is t1, and a period from the peak of the pen pressure to the end of the drawing is t2, if a relationship of t1> β × t2 (β is a predetermined constant larger than 1) holds, It is determined that the pressure has changed from low to high (except when it is determined that there is no change in pen pressure by the method shown in FIG. 7A).
[0040]
Alternatively, the pen pressure can be analyzed as follows. That is, a graph is drawn based on the temporal change of the pen pressure, and the area created by the graph in each of the temporal first half and the second half is obtained. If the difference is within a predetermined threshold, the pen pressure does not change.If the first half is larger than the predetermined threshold, the pen pressure changes from strong to weak. If it is larger than the threshold, it can be determined that the pen pressure has changed from low to high. This technique can also be used to analyze the speed of the stroke.
[0041]
Hereinafter, processing for performing a character operation in the information terminal device 1 according to 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 inputting characters 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 a process executed by the CPU 11 to perform a character operation such as a character decoration in the information terminal device 1 of the present embodiment. The process shown in this flowchart is executed in parallel with other processes in a state where a screen on which characters can be input and displayed as shown in FIG. 3 is displayed on the display device 14a. First, the CPU 11 determines whether the tablet 14b is pressed by the pen 2 and the pressed coordinate position and the pen pressure are input (step S11). If there is no input of the coordinate position and the pen pressure, the process of step S11 is repeated, and the process waits for the tablet 14b to be pressed by the pen 2.
[0043]
When the coordinate position pressed by the pen 2 and the pen 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 input 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, a character to be subjected to a character operation is specified (step S15).
[0044]
Next, the CPU 11 refers to the character operation tables shown in FIGS. 4 and 5 according to the stroke, pen pressure, and positional relationship with the character analyzed in steps S12 to S14, and performs the character operation (character decoration) to be executed. Is read out (step S16). Here, the CPU 11 determines whether any type of character operation has been successfully read from the character operation table (step S17). If nothing could be read as the type of character operation, the process returns to step S11.
[0045]
If any type of character operation can be read, the CPU 11 determines whether the read type of character operation is “undo” (step S18). In the case of "undo", the character to be subjected to the character operation is not the character specified in step S15, but the character for which the character operation was performed immediately before. The processing for canceling the character operation is performed and displayed on the display device 14a (step S19). Then, the process returns to step S11.
[0046]
If the read type of the character operation is not “undo”, the CPU 11 determines whether the read type of the character operation is “redo” (step S20). In the case of "redo", the character to be handled for the character operation is not the character specified in step S15, but the character that has been subjected to the last undo process, and the character is subjected to the redo process (the last An undo is canceled (step S21). Then, the process returns to step S11.
[0047]
If the type of the read character operation is not “redo”, the CPU 11 determines whether the type of the read character operation is “character delete” (step S22). If it is "delete character", the CPU 11 deletes the character targeted for the character operation from the display screen and displays it on the display device 14a (step S23). Then, the process returns to step S11.
[0048]
If the type of the read character operation is not “character deletion”, the CPU 11 determines whether the type of the read character operation is “cancel character decoration” (step S24). In the case of "character decoration cancellation", the process proceeds to step S29 described later. If it is not "character decoration cancellation", the CPU 11 determines whether the type of the read character operation is "character decoration retry" (step S25). If it is "character decoration retry", the process proceeds to step S30 described later.
[0049]
When the read type of character operation is not “character decoration retry”, it means that some type of character decoration is read. In this case, the CPU 11 determines whether or not the read type of the character decoration is the same as that already attached to the character to be subjected to the character operation based on the positional relationship analyzed in step S14. (Step S26).
[0050]
If the same character decoration has been given, the CPU 11 deletes the character decoration from the character subjected to the character operation and displays the character decoration on the display device 14a (step S27). Then, the process returns to step S11. When the same character decoration is not provided, the CPU 11 adds the character decoration to the character which is the target of the character operation, and causes the display device 14a to display the character (step S28). Then, the process returns to step S11.
[0051]
In step S29, the CPU 11 deletes all types of character decorations attached to the character subjected to the character operation, and causes the display device 14a to display characters without any character decoration. Then, the process returns to step S11. In step S30, the CPU 11 opens a menu for character decoration selection and causes the display device 14a to display the menu. The user taps the tablet 14b with the pen 2 to select a desired type of character decoration (step S31). The CPU 11 attaches the selected character decoration to the character targeted for the character operation and causes the display device to display the character (step S32). Then, the process returns to step S11.
[0052]
In addition, when the character is deleted in step S23, when the character decoration is erased in step S27 or S29, and when the character decoration is added in step S28 or S32, the next undo process is prepared. Information relating to character deletion, character decoration erasure, or character decoration addition is stacked on the first stack. The undo process is performed using the information stacked on the first stack here, and the redo process is performed using the information stacked on the second stack in the undo process.
[0053]
Hereinafter, an example of a specific procedure for performing a character operation such as a character decoration in the information terminal device 1 of this embodiment will be described. FIGS. 9A to 9F are diagrams illustrating an example of a specific procedure for performing a character operation such as a character decoration. FIGS. 10A to 10D are diagrams illustrating a specific procedure for retrying character decoration (changing the type of character decoration).
[0054]
As shown on the left side of FIG. 9A, the position on the tablet 14 b corresponding to the lower third of the line 146 where the character “Aioeo” is displayed is quickly and almost uniformly moved by the pen 2. Suppose you have been traced. The pen pressure is assumed to be weak and constant. The character to be subjected to the character operation is specified as “Aioeo” in the figure based on the position of the traced stroke. Referring to the character operation tables of FIGS. 4 and 5, “underline (extremely fine)” is registered as the type of character operation, and therefore, as shown in the right side of FIG. An extra-fine underline 201 is displayed below "Aioe".
[0055]
As shown in the diagram on the left side of FIG. 9B, the position on the tablet 14 b corresponding to the middle third of the line 146 on which the letters “Aioueo” are displayed is quickly and almost uniformly moved by the pen 2. Let's say you've been beaten. The pen pressure is assumed to be weak and constant. The character to be subjected to the character operation is specified as “Aioeo” in the figure based on the position of the traced stroke. Referring to the character operation tables of FIG. 4 and FIG. 5, since “type of character operation” is registered as “strikethrough”, as shown in the right side of FIG. A strike-through line 202 is displayed.
[0056]
As shown in the diagram on the left side of FIG. 9C, the position on the tablet 14 b corresponding to the upper third of the line 146 on which the character “Aieo” is displayed is slowly and almost constant with the pen 2. Suppose you were traced at a speed. The pen pressure is assumed to be weak and constant. The character to be subjected to the character operation is specified as “Aioeo” in the figure based on the position of the traced stroke. Referring to the character operation tables of FIGS. 4 and 5, "Upper line (fine)" is registered as the type of character operation, and therefore, as shown in the diagram on the right side of FIG. A thin upper line 203 (though it is thicker than an extra fine line) is displayed on "Aioo".
[0057]
As shown in the left side of FIG. 9D, the position on the tablet 14 b corresponding to the middle third of the line 146 on which the characters “Aioeo” are displayed is slowly and almost uniformly moved by the pen 2. Suppose you were traced. The pen pressure is assumed to be strong and constant. The character to be subjected to the character operation is specified as “Aioeo” in the figure based on the position of the traced stroke. Referring to the character operation tables of FIG. 4 and FIG. 5, since “delete character string” is registered as the type of character operation, as shown in the right side of FIG. Is deleted from row 146.
[0058]
As shown in the left side of FIG. 9E, the position on the tablet 14 b corresponding to the lower third of the line 146 in which the character “AIUEO” is displayed with the thin underline 204 is displayed. It is assumed that the user is slowly traced at a substantially constant speed in Step 2. Assume that the pen pressure is weak and constant. The character to be subjected to the character operation is specified as “Aioeo” in the figure based on the position of the traced stroke. Referring to the character operation tables of FIGS. 4 and 5, “underline (thin)” is registered. However, since the target character “aiueo” is already underlined with a thin line, FIG. As shown in the figure on the right side of (e), the underline 204 attached to the target character "Aioe" is deleted.
[0059]
As shown in the left diagram of FIG. 9F, the pen 2 is traced on the tablet 14 b in the state where the character “aiueo” is underlined with the thin line by the previous operation, and a left arrow is displayed. It is assumed that the character is drawn at a position irrelevant to the character displayed on the device 14a. Referring to the character operation tables of FIGS. 4 and 5, this leftward arrow indicates that undo processing is to be performed, and the character to be operated is identified as "Aioeo" in the figure in which the character operation was performed immediately before. . Accordingly, as shown in the right-side diagram of FIG. 9F, the operation immediately before the underline 204 is added is canceled, and the underline 204 added to the character “Aioo” is deleted.
[0060]
As shown in FIG. 10A, the position on the tablet 14 b corresponding to the entire line 146 on which the letters “Aioueo” are displayed with the extra-fine underline 201 attached is quickly and almost uniformly moved with the pen 2. It is assumed that the pen pressure is traced weakly and uniformly, and a right-pointing arrow is drawn. Referring to the character operation tables of FIGS. 4 and 5, it can be seen that the rightward arrow indicates that the character decoration is to be retried. The character to be operated is specified as "Aioe" 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 indicated as “lower wavy line” in the menu 210 is tapped with the pen 2, the “lower wavy line” in the menu 210 is highlighted as shown in FIG. Then, a line type selection menu 220 is opened and displayed on the display device 14a. Here, assuming that the position where “extra fine” is displayed in the menu 220 is tapped with the pen 2, as shown in FIG. The line 201 is displayed on the display device 14a instead of the very thin lower wavy line 205.
[0062]
As described above, in the information terminal device 1 according to 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, and the pen stroke is analyzed. Analyze the pressure. In addition, the positional relationship between the character displayed on the display device 14a and the stroke is analyzed, and the character to be subjected to the character operation is further specified. Here, the type of character operation is read from the character operation table based on the analysis result of the stroke, pen pressure, and positional relationship, and character operation such as character decoration is performed in accordance with the read type of character operation. Done. That is, since the designation of the character to be subjected to the character operation and the type of the character operation can be performed by one operation, various types of character operations can be easily performed in a simple procedure.
[0063]
In addition, the positional relationship between the position of the stroke and the position of the displayed character is included in the analysis target of pen input. By including this positional relationship, by slightly changing the position of the stroke, different types of character decoration such as underline, strikethrough, and upper line can be added. Therefore, various meanings can be given to the characters displayed on the display device 14a according to the user's intention.
[0064]
When the type of character operation read from the character operation table is character decoration, if the same character decoration is already attached to the character to be operated, the character decoration is erased. For this reason, the operation for erasing the character decoration already attached to the character can be performed easily as in the case of adding the character decoration. Furthermore, depending on the analysis result of the stroke, pen pressure, and positional relationship, character deletion is read as the type of character operation, and the character to be operated is deleted. Can be done.
[0065]
By the way, the stroke of the input by the pen 2 is analyzed not only for the coordinate position but also for a time-series change. Further, even if the pen 2 is once separated from the tablet 14b, if it is within a predetermined time, it is determined as one stroke, 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 input mode of the pen 2 in various ways.
[0066]
Further, with respect to the pen pressure input by the pen 2, not only the magnitude is analyzed but also the time-series change. For this reason, similarly to the stroke, various types of character operations can be performed by changing the writing pressure for pressing the pen 2 against the tablet 14b in a series of strokes.
[0067]
Irrespective of the position where characters are displayed on the display device 14a, tracing the tablet 14b with the pen 2 to draw a leftward arrow causes undo processing, and drawing a rightward arrow results in redo processing. For this reason, when a character operation performed immediately before is processed differently from a 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 processing, character operations can be performed more easily.
[0068]
On the other hand, when the character is displayed on the display device 14a and the pen 2 traces the tablet 14b and draws a leftward arrow, the character decoration is canceled. Therefore, it is possible to delete all the character decorations attached to the character to be operated by a simple operation. Similarly, if a right arrow is drawn, the character decoration is retried. In this case, if the user selects the type of the 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 the desired type of character decoration.
[0069]
The present invention is not limited to the above 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 specify the type of character operation to be performed according to the analysis result of the stroke, the pen pressure, and the positional relationship, and the type of any character operation is determined according to the analysis result. Was being read. On the other hand, instead of using such a table format, the program may be branched according to the analysis result of the stroke, the pen pressure, and the positional relationship to specify the type of character operation to be executed.
[0071]
In the above embodiment, the type of the character operation is determined by analyzing the stroke input by the pen 2, the positional relationship between the positions of the characters, and the pen pressure input by the pen 2. . However, if the tablet 14b does not have a function of inputting the pen pressure (even if there is one), the character is determined according to two results, 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]
If the tablet 14b has a function of inputting a pressing state other than the pen pressure, the type of character operation can be determined according to the result of analyzing the other pressing states. Here, other pressing states include the distance between the tip of the pen 2 and the tablet 14b, the angle between the pen 2 and the tablet 14b, the depth of the pen 2, and the like.
[0073]
In the above embodiment, the type of the character decoration to be attached to the character to be operated is specified by referring to the character operation tables of FIGS. 4 and 5 according to the analysis result of the stroke and the pen pressure by the operation of the pen 2. Was. However, since the speed at which the pen 2 is moved and the pen pressure are peculiar to each user, character decorations not intended by the user may be added. 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, cancellation of character decoration, retry of character decoration, etc. are performed in the next processing with character decoration, analysis of stroke and pen pressure when character decoration is first applied Accumulates the result and the type of character decoration newly added after undo processing etc. and accumulates it, and based on the data accumulated in this way, changes the criterion of stroke speed and pen pressure strength It may be.
[0075]
Also, when the user starts using the information terminal device 1 (even after the start), for example, "Please draw a straight line in the horizontal direction slowly and strongly", "Draw an ellipse surrounding the displayed character" In response to a question such as "Please," the user may sample data of various types of pen operations, and the stroke speed may change the criterion for determining the strength of writing pressure based on the sampling result.
[0076]
In the above embodiment, the program and the table for performing the character operation such as the character decoration are described as being stored in the ROM 12 in advance. However, the program may be stored in a computer-readable recording medium such as a CD-ROM or a DVD-ROM, and may be distributed independently of hardware. The information terminal device 1 may be provided by storing it in a removable memory card. Further, these processing programs may be stored in a fixed disk device included in a Web server device on the Internet, and distributed via the Internet.
[0077]
【The invention's effect】
As described above, according to the present invention, a character operation can be easily performed with a simple procedure.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating an 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 a type of character operation.
FIG. 5 is a diagram illustrating a character operation table for specifying a type of character operation.
FIG. 6 is a diagram illustrating a technique for analyzing a stroke by a pen operation.
FIG. 7 is a diagram illustrating a technique for analyzing pen pressure by pen operation.
FIG. 8 is a flowchart illustrating a process for performing a character operation such as a 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 a 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 pen
11 CPU
12 ROM
13 RAM
14a display device
14b tablet
14 Touch panel
15 External I / F

Claims (8)

In an information terminal device including a touch panel configured by stacking a tablet and a display device that displays characters at predetermined positions,
Trajectory analysis means for analyzing a trajectory where the tablet is pressed,
Character position analysis means for analyzing the positional relationship between the position of the locus of the tablet pressed and the characters displayed on the display device,
According to the analysis result of the character position analysis unit, an operation target character identification unit that identifies a character to be subjected to a character operation among the characters displayed on the display device,
A character operation unit that performs a character operation specified according to the analysis result of the trajectory analysis unit and the analysis result of the character position analysis unit on the character specified as the operation target by the operation target character specification unit; An information terminal device characterized by the above-mentioned. The trajectory analysis means analyzes the trajectory of the pressed tablet in time series,
2. The information terminal according to claim 1, wherein the character operation unit performs a different type of character operation on the character specified as the operation target according to a time-series difference in a locus of pressing the tablet. 3. apparatus. The trajectory analysis means analyzes the plurality of presses as one trajectory, even when the tablet is pressed a plurality of times, when the time interval between each press is within a predetermined time. 3. The information terminal device according to claim 1, wherein The tablet further includes a pressing state analyzing unit that analyzes a state in which the tablet is pressed, wherein the character operating unit further includes a character operation specified according to an analysis result of the pressing state analyzing unit, the character specified as the operation target. The information terminal device according to any one of claims 1 to 3, wherein the information terminal device performs the above operation. The pressing state analyzing means analyzes the state in which the tablet is pressed in time series,
5. The information terminal according to claim 4, wherein the character operation unit performs a different type of character operation on the character specified as the operation target according to a time series difference in a state in which the tablet is pressed. 6. apparatus. The information according to any one of claims 1 to 5, wherein the character operation performed by the character operation unit on a character specified as an operation target includes a plurality of types of character decorations according to an analysis result. Terminal device. A method executed in an information terminal device including a touch panel configured by stacking a tablet and a display device that displays characters at a predetermined position,
Analyzing the locus of the tablet pressed,
Analyzing the positional relationship between the position of the locus of the tablet pressed and the characters displayed on the display device,
According to the positional relationship between the position of the trajectory and the position of the character, specify a character to be subjected to a character operation among the characters displayed on the display device,
A character operation processing method, wherein a character operation specified in accordance with the trajectory and the positional relationship between the position of the trajectory and the position of the character is performed on the character specified as the target of the character operation. A computer device having a touch panel configured by stacking a tablet and a display device that displays characters at predetermined positions,
Trajectory analysis means for analyzing a trajectory where the tablet is pressed,
Character position analysis means for analyzing the positional relationship between the position of the locus where the tablet is pressed and the characters displayed on the display device,
According to the analysis result of the character position analysis unit, an operation target character specification unit that specifies a character to be subjected to a character operation among the characters displayed on the display device, and
A program for functioning as character operation means for performing a character operation in accordance with the analysis result of the trajectory analysis means and the analysis result of the character position analysis means on a character specified by the operation target character specifying means as an operation target .

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