JP3253136B2 - Information processing method and apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing method and apparatus capable of sequentially displaying stored character strokes in a stroke order.

[0002]

2. Description of the Related Art For example, in an online character recognition device, a user can check character stroke data stored in a recognition dictionary in order to confirm what kind of handwriting the character stroke information is created in. Were reproduced in order to reproduce handwriting.

[0003]

However, in the above-mentioned conventional example, since drawing is performed at a constant speed for all strokes constituting a character, it takes time for a character having a large number of strokes, and it is desired to confirm only a part of the character. There is a disadvantage that time is wasted for the user.

[0004]

According to an aspect of the present invention, there is provided an information processing method, comprising the steps of: displaying a stroke of a character registered in a dictionary for online character recognition; A selecting step for allowing the user to select a part of the selected stroke, a first speed setting step for setting a speed for displaying the selected part of the stroke, and a speed for displaying the stroke excluding the selected part of the stroke And a display control step of controlling the character strokes to be re-displayed in the stroke order at each of the set speeds.

In order to solve the above problem, an information processing method according to a second aspect is the information processing method according to the first aspect, wherein a character registered in the online character recognition dictionary includes a plurality of strokes. It is characterized by becoming. In order to solve the above problem, an information processing method according to claim 3 is the information processing method according to claim 2, wherein in the selecting step, a stroke order is first among a plurality of strokes selected by a user. A last stroke is obtained, and all strokes whose stroke order is between the obtained first and last strokes are selected from the displayed strokes of the character as the partial stroke information.

According to another aspect of the present invention, there is provided an information processing apparatus, comprising: display means for displaying a stroke of a character registered in a dictionary for online character recognition; and a part of the displayed stroke. Selecting means for allowing the user to select, a first speed setting means for setting a speed for displaying the selected part of the stroke, and a second speed for setting a speed for displaying the stroke excluding the selected part of the stroke. And a display control means for controlling the character strokes to be redisplayed in the stroke order at the respective set speeds. In order to solve the above problem, an information processing apparatus according to claim 5 is the information processing apparatus according to claim 4, wherein characters registered in the online character recognition dictionary include a plurality of strokes. Features. In order to solve the above-mentioned problem, the information processing apparatus according to claim 6 is the information processing apparatus according to claim 5, wherein the selecting unit determines that the stroke order is first among a plurality of strokes selected by the user. A last stroke is obtained, and all strokes whose stroke order is between the obtained first and last strokes are selected from the displayed strokes of the character as the partial stroke information.

[0007]

【Example】

(Embodiment 1) A preferred embodiment according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 15 is a schematic configuration diagram showing the configuration of an information processing apparatus according to one embodiment of the present invention, which is common to the first and second embodiments. In the figure, reference numeral 41 denotes a CPU for controlling the entire apparatus, and performs various processes according to a program stored in a ROM 42. Reference numeral 42 denotes a ROM that stores a control program, an error processing program, a program operated according to a flowchart described later, and the like. Reference numeral 43 denotes a RAM used as a work area for various programs and a temporary save area for error processing. The RAM 43 includes a dictionary for use in recognition described later, a user dictionary 106, a user name index file 107, a character type file 108, a character standard stroke number database 109,
Are stored. A coordinate input unit 44 includes a transparent coordinate input plate (not shown) and a pen (not shown) for indicating the position of a coordinate point with respect to the coordinate input plate. A method using ultrasonic vibration shall be used. Reference numeral 45 denotes a memory having a one-to-one correspondence with coordinate points of a coordinate input plate (not shown), and stores bit information of coordinate points input on the coordinate input plate or bit information of dots calculated based on coordinate points described later. VIDEO RAM (hereinafter, referred to as “VRAM”) to be stored. Reference numeral 46 denotes a display unit for displaying a bit image based on the bit information stored in the VRAM 5. The display unit 46 uses an LCD. For example, a display method using an EL element or a CRT may be used. .
Various windows described later are displayed on the display unit 46.

In the present embodiment, a user registration function that allows a user to register his or her handwriting in a dictionary will be described, taking an online character recognition device as an example.

FIG. 13 is a block diagram showing the configuration of a user registration application for realizing the present invention. 21-26
Are each responsible for a function of user registration in online character recognition, and include a window application execution unit (21 to 25) using a GUI (graphical user interface) and a dictionary unit (106).

A list of registered users is displayed on the initial screen section 24, and the owner of the currently set user dictionary can be confirmed. Other functions include both instruction functions for registering a new user and editing registered characters in the user dictionary. The 25 new user registration section is where the registration of the new user is performed. 26
The user dictionary editor can display characters in the user dictionary in a list, and can instruct individual characters to be deleted and handwritten to be reproduced. It also includes an instruction function for newly registering a character by handwriting of the user. The new character registration unit 21 is a place where character registration specified by the user dictionary editing unit 26 is performed. The handwritten character reproducing section 22 is a place where the registered characters specified by the user dictionary editing section 26 are reproduced and drawn in the order of handwriting. The user dictionary unit 23 is a place where registered character information is stored in order to realize these functions. Here, a plurality of users each have different user dictionaries.

FIG. 14 is a window state transition diagram of the user registration application. Each of the units 201 to 205 represents a window for executing the above-described function of FIG. 2
The system 06 is a system where control is returned when this user registration application is terminated. Arrows in the figure indicate the flow of processing by control commands input by button control in each window. Hereinafter, the flow and the transition of windows will be described with reference to FIG.

When a "new user registration" command is designated on the new screen section 201, a new user registration screen section 202 newly appears in the form of a pop-up window. When the “registration & end” command is instructed on the new user registration screen unit 202, the pop-up window is deleted, and the control returns to the new screen unit 201 again. When the “edit user dictionary” command is instructed on the new screen section 201, the new screen section 201 is deleted, and a new user dictionary editing section 203 appears. Here, when the "new character registration" command is instructed, a new character registration screen section 204 appears in the form of a pop-up window. The character registration operation in this window can be repeatedly executed unless an "end" command is instructed. After the characters are registered, when "end" is instructed, the new character registration screen unit 204 is erased, and the control moves to the user dictionary editing screen unit 203. The “delete character” command on the user dictionary editing screen unit 203 can be executed a plurality of times. Further, when the "handwriting reproduction" command is instructed, the handwritten character reproduction unit 205 appears in the form of a pop-up window. The reproduction starts as soon as the window is displayed, and can be repeatedly displayed by a “redisplay” command. The “end” command deletes the handwritten character reproduction section window and returns control to the user dictionary editing screen section. When an "end" command is instructed on the user dictionary editing screen unit 203, the own window is deleted and the new screen 201 is displayed again. Therefore, the user registration application can be terminated only in the initial screen unit 201.
Only when the "end" command is instructed.

As described above, the number of windows relating to the user registration application is determined by the screen units 202 and 20.
When the pop-up windows 4 and 205 are displayed, the number is two, and when the window 201 or 203 is displayed, the number is one.

FIG. 1 is a block diagram of a handwriting display device according to a first embodiment of the present invention.

The display unit 8 is a dot matrix liquid crystal display. By writing on the display with a pen, the coordinate input unit 1 detects the input coordinates, and the processing unit 9 performs processing and displays it on the display unit 8. .

FIGS. 2, 3 and 4 show examples of screens displayed on the display unit 8. FIG.

The screen is created by the screen management unit 7,
Is displayed.

FIG. 2 shows a screen by the new character registration unit 21 for the user to newly register a handwriting, which corresponds to 204 in FIG.

On the new character registration screen 10, by writing characters on the handwriting input area 11 with the pen 17, the coordinate input unit 1 detects the input coordinates, and the input analysis unit 2 detects the input coordinates in the handwriting input area 11. It analyzes that there is and stores the handwriting data in the handwriting data storage unit 3. The handwriting data is composed of coordinate values constituting the handwriting, a code indicating the end of each stroke, and a code indicating the end of all strokes.

When one of the characters displayed in the character selection area 13 is selected with a pen and the registration key 14 is designated, the character is associated with the handwriting data and registered in the user dictionary 23.

FIG. 3 is a screen for redisplaying the handwriting registered by the user by the handwritten character reproducing unit 22 specified on the user dictionary editing screen unit 203, and corresponds to 205 in FIG.

The handwriting drawing unit 6 is configured to execute the handwriting display area 1 based on the handwriting data stored in the handwriting data storage unit 3.
Draw the handwriting on 5.

This operation will be described with reference to the flowchart of FIG.

In step S1, when a code indicating the end of all strokes is detected from the handwriting data, the process is terminated. Otherwise, the subsequent operations are performed.

[0026] In step S2 reads 1 point coordinate points from the handwriting data, in the variable P _1, is set.

In step S3, values are set to variables T _D and T _U representing time.

In step S4, if a code indicating the end of one stroke is detected from the handwriting data, the process proceeds to step S9, and if not, the subsequent operation is performed.

[0029] In step S5 reads one point coordinate points from the handwriting data, in the variable P _2, is set.

[0030] In step S6, connecting the coordinate point P ₁ and the coordinate point P ₂ by a straight line. From handwriting drawing unit 6 to screen management unit 7
Is sent to the display unit 8 to display the drawing command.

[0031] In step S7, substitutes the value of the variable P ₂ into the variable P _1.

In step S8, the process waits for the time T _D to adjust the speed for displaying the stroke, and then returns to step S4.

In step S9, a time T _{U is} waited for adjusting the time between strokes.
It returns to step S1.

With the above operations, the handwriting is displayed in the handwriting display area 15.

Here, if the times T _D and T _U are constant values, the characters are displayed at a constant speed.
For the stroke specified by the user, the times T _D and T _U
By changing the value of, only the part that the user wants to check the stroke order is displayed slowly.

The redisplay of the designated portion when the portion for which the user wants to confirm the stroke order is designated by the user will be described below.

As shown in FIG. 4, the handwriting display area 15
When a locus such as 18 is input with the pen 17 on the top, it is recognized as a command having a meaning of stroke selection. A trajectory that becomes a command in this way is called a gesture. The input analysis unit 2 determines the meaning and attribute as a command from the position and shape of the gesture.

The character stroke designating section 4 selects a partial character stroke of the handwritten character 15 surrounded by the gesture 18. The display speed setting unit 5 includes: a stroke selected by the character stroke specifying unit 4;
The display speed is set for each stroke that is not so.

By the stroke selection gesture,
The operation of setting the drawing speed of each stroke and drawing will be described in detail with reference to the flowchart of FIG.

In step S11, the coordinate input unit 1
The gesture input is detected by the
, The following operation is started.

In step S12, the input analysis unit 2
Analyzes the meaning of the gesture. It is checked whether each character stroke composed of the coordinate sequence stored in the handwriting data storage unit 3 is surrounded by the gesture. This determination method will be described later with reference to FIG.

In step S13, the character stroke designating unit 4 obtains the minimum value m and the maximum value n of the stroke numbers among the character strokes surrounded by the gesture. The stroke number is k in the k-th stroke. For example, in the case of eight strokes, strokes with stroke numbers 1 to 8 exist.
If the strokes of the fifth, sixth, and seventh strokes are surrounded by gestures, the minimum value m is 3, and the maximum value n is 7.

In step S14, the handwriting drawing unit 6
Thus, the first to (m-1) th images are drawn at high speed. The display speed setting unit 5 sets the times T _D and T _U to predetermined values T _D1 and T _U1 , respectively, so that high-speed drawing is performed.

In step S15, the handwriting drawing unit 6
Thus, the m-th to n-th images are drawn at a low speed. The display speed setting unit 5 sets the times T _D and T _U to predetermined values T _D2 and T _U2 , respectively, so that drawing is performed at a low speed. Here, T _D2 > T _D1 and T _U2 > T _U1 .

In step S16, the handwriting drawing unit 6
Thus, the (n + 1) th to the last images are drawn at high speed.

The method of determining whether or not each character stroke is surrounded by a gesture in step S12 will be described in detail.

First, attention is paid to one of the points constituting the character stroke.

A method of checking whether the point of interest is surrounded by gestures will be described with reference to the flowchart of FIG.

In step S21, the flag f ₁ ,
Clear f ₂ , f ₃ and f ₄ respectively.

In step S22, attention is paid to the starting point of the gesture.

In step S23, when the point of interest of the character stroke is set as the origin, it is checked in which quadrant the point of interest of the gesture is. For convenience, the coordinate axes are also included in any quadrant. Set the coordinates of the point of interest of the character stroke to (X
_S, Y _S), the coordinates of the target point of the gesture (X _G, Y _G)
And if X _G ≧ X _S and Y _G ≧ Y _S , the first quadrant,
If X _G <X _S and Y _G ≧ Y _S , the second quadrant, if X _G <X _S and Y _G <Y _S , the third quadrant, if X _G ≧ X _S and Y _G <Y _S This is the fourth quadrant. When in the Qth quadrant, the flag f _Q
Is set. (Q = 1,2,3,4)

In step S24, the flag f ₁ ,
If f ₂ , f ₃ , and f ₄ are all set, the process proceeds to step S25; otherwise, the process proceeds to step S26.

In step S25, it is determined that the attention point of the character stroke is included in the gesture,
finish.

In step S26, if the point of interest of the gesture is the end point, the flow proceeds to step S27; otherwise, the flow proceeds to step S28.

In step S27, it is determined that the point of interest of the character stroke is not surrounded by the gesture,
finish.

In step S28, attention is paid to the next point of the gesture, and the process returns to step S23.

FIG. 8 shows an example in which the attention point of the character stroke is surrounded by the gesture, and FIG. 9 shows an example in which the attention point of the character stroke is not surrounded by the gesture.

The above determination is made while paying attention to each point constituting the character stroke. If any of the points of interest of the character stroke is surrounded by a gesture, the character stroke is regarded as being surrounded by the gesture.

The functions described above include the times T _D1 , T _U1 , T
By adding the function of changing the values of _D2 and T _U2 , the handwriting can be confirmed at the speed desired by the user. For example, by setting _TD1 and _TU1 to 0, a stroke that does not require a stroke order can be drawn almost instantaneously, and no time is wasted.

If only the selected stroke is particularly required, the display color of the selected stroke can be changed, or only the selected stroke can be displayed.

In the present embodiment, when the handwriting is redisplayed in accordance with the stroke order, a portion whose stroke order is to be confirmed can be designated by a simple operation.

(Embodiment 2) FIG. 10 is a view showing a type display area 12 of the handwriting display device of FIG.

This embodiment relates to an apparatus for displaying printed characters in a correct stroke order.

In FIG. 10, the character “surprise” is displayed in the type display area 12, and is divided into four partial patterns 101 to 104.

As shown in FIG. 11, the partial pattern 101
Indicates the first to third strokes, the partial pattern 102 indicates the fourth to eighth strokes, and the partial pattern 103 indicates the ninth to 12th strokes.
Up to the image, the partial pattern 10 is the 13th to 22nd images. FIG. 11 shows the positions of the left end, right end, upper end, and lower end of each partial pattern. This means that the type display area is divided into 16 equal parts vertically and horizontally, and
It is represented by the numerical value of.

The number and position of the partial patterns vary depending on the characters to be displayed, and a numerical value is stored for each character as in FIG.

In this embodiment, by drawing a gesture with the pen 17 on the partial pattern of the character display area 12, only the partial pattern that the pen has passed is slowly displayed.
Other partial patterns are displayed faster.

The operation of this embodiment will be described with reference to the flowchart of FIG.

In step S31, attention is first paid to the first partial pattern.

In step S32, it is checked whether the gesture has passed over the partial pattern of interest. If at least one of the coordinates constituting the gesture falls between the left end and the right end and between the lower end and the upper end in FIG. 10, the gesture is regarded as having passed over the partial pattern. If so, the process proceeds to step S33; otherwise, the process proceeds to step S34.

In step S33, each stroke constituting the partial pattern is displayed at a low speed.

In step S34, each stroke constituting the partial pattern is displayed at high speed.

In step S35, if it is the last partial pattern, the processing is terminated.

In step S36, attention is paid to the next partial pattern, and the flow returns to step S32.

Usually, it is often desired to know the stroke order for a certain partial pattern. Therefore, in the present embodiment, when the printed characters are redisplayed according to the stroke order, by storing the position information of the partial pattern for each character in advance, it is possible to specify the portion for which the stroke order is to be confirmed with a simpler operation. it can.

As described above, according to the present embodiment, when the character stroke is redisplayed, the portion that the user wants to check can be displayed in a concentrated manner, and there is an effect that no wasted time is taken.

Further, there is an effect that the stroke to be displayed can be easily selected.

[Brief description of the drawings]

FIG. 1 is a block diagram of a handwriting display device according to a first embodiment of the present invention;

FIG. 2 is a diagram of a screen for a user to newly register a handwriting;

FIG. 3 is a diagram of a screen for redisplaying a handwriting registered by a user.

FIG. 4 is a diagram in which a gesture is drawn on the screen of FIG. 3 with a pen.

FIG. 5 is a flowchart showing a handwriting display operation;

FIG. 6 is a flowchart showing an operation of selecting a stroke and changing a drawing speed.

FIG. 7 is a flowchart showing a method for determining whether or not a point of interest of a character stroke is surrounded by a gesture;

FIG. 8 is an example in which a point of interest of a character stroke is surrounded by a gesture.

FIG. 9 is an example in which a point of interest of a character stroke is not surrounded by a gesture.

FIG. 10 is a diagram showing each partial pattern of the character “surprise” on the type display area.

FIG. 11 is a diagram showing stroke numbers and positional information of each partial pattern of the character “surprise”;

FIG. 12 is a flowchart showing the operation of the second embodiment of the present invention.

FIG. 13 is a block diagram of a user registration device.

FIG. 14 is a window state transition diagram.

FIG. 15 is a block diagram illustrating a configuration of an information processing apparatus.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Takashi Harada, Inventor 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (72) Inventor Katsuhiko Sakaguchi 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon (72) Inventor Shigeki Mori 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Hiroto Yoshii 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. ( 56) References JP-A-1-147787 (JP, A) JP-A-63-280295 (JP, A) JP-A-4-180093 (JP, A) JP-A-1-217388 (JP, A) Hei 1-94378 (JP, A) JP-A-59-102279 (JP, A) JP-A-58-192069 (JP, A) JP-A-57-120975 (JP, A) (58) Fields investigated (Int) .Cl. ⁷ , DB name) G06K 9/62-9/68 G06F 3/0 3 380 G06F 17/22 506

Claims (6)

(57) [Claims] And 1. A display step of displaying stroke of characters registered in the dictionary for online character recognition, a selection step of Ru is selected by the user a portion of the displayed stroke, some of the selected A first speed setting step of setting a speed at which a stroke is displayed; a second speed setting step of setting a speed at which a stroke excluding the selected part is displayed; and A display control step of controlling the stroke to be redisplayed in the stroke order. Wherein said characters registered in the dictionary for online character recognition processing method according to claim 1, characterized in that it consists of a plurality of strokes. 3. In the selecting step, first and last strokes of the stroke order are determined from a plurality of strokes selected by the user, and the stroke order is determined from the strokes of the displayed character. 3. The information processing method according to claim 2, wherein all strokes between the first and second strokes are selected as the partial stroke information. And display means 4. Show strokes of characters registered in the dictionary for online character recognition, selection means Ru allowed a user to select a portion of the displayed stroke, some of the selected First speed setting means for setting a speed at which a stroke is displayed; second speed setting means for setting a speed at which a stroke excluding the selected part is displayed; and An information processing apparatus, comprising: display control means for controlling a stroke to be redisplayed in a stroke order. Wherein said characters registered in the dictionary for online character recognition apparatus according to claim 4, characterized in that it consists of a plurality of strokes. 6. The method according to claim 1, wherein the selecting means obtains first and last strokes in the stroke order from the plurality of strokes selected by the user, and determines the first and last strokes in the strokes of the displayed character. 6. The information processing apparatus according to claim 5, wherein all strokes between the first and second strokes are selected as the partial stroke information.