JPH08234908A - Data input device - Google Patents

Abstract

PURPOSE: To easily process data by storing coordinate data corresponding to a track which is present in a blank section as one unit of data when there is more than or equal to specific blank section where a unidirectional track of coordinate data expanded into one line is not present continuously. CONSTITUTION: Handwriting character data inputted to a touch panel 14 have its input track sampled as coordinate data at a certain period, and respective coordinate data are displayed while connected together by segments (echo-back display). The coordinate data are stored in a handwriting buffer 16a in a RAM 16 in the input order and when a touch pen is put away from the touch panel 14, a pen separation code is written. In a one-dot line buffer 16b in a RAM 16, black dot data filling gaps between respective X coordinates are expanded into one line while made to correspond to only X coordinates of the respective coordinate data stored in the handwriting buffer 16a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data input device capable of inputting handwritten data, such as a touch panel type portable information device.

[0002]

2. Description of the Related Art In a touch panel type portable information device, when a touch pen or the like is pressed against a touch panel in which a transparent tablet is placed on a liquid crystal display panel to input character data by handwriting, the input locus is sequentially coordinated by the tablet. The data is sampled and simultaneously displayed on the liquid crystal display panel.

Here, coordinate data on the touch panel that is sequentially sampled in accordance with the handwriting input operation is stored in a buffer such as a RAM in the order of sampling.

That is, for example, after inputting a series of characters, an underline or the like is added to the first input character, or a new character is inserted into an empty space in the already input character string. Even in the case of such a case, the coordinate data sampled corresponding to the underline or the inserted character is sequentially added to the end of the coordinate data group stored in the buffer.

[0005]

However, like the conventional handwriting input device described above, coordinate data sequentially sampled in the input order regardless of before and after the handwriting position on the touch panel is at the end of the buffer. For example, even if a character or underline exists in the same display area on the display of the touch panel, the coordinate data forming the character or underline is stored and managed in a distant area in the buffer. Even if the handwritten data existing in the same display area is deleted or modified, it cannot be collectively processed as coordinate data, and coordinate data in separate areas in the buffer must be processed separately. There is a problem that does not happen.

The present invention has been made in view of the above problems. For example, the coordinate data input first and the coordinate data input later in the same coordinate area are not simply stored and managed in the input order. It is an object of the present invention to provide a data input device capable of storing and managing in a state corresponding to the position indicated by each coordinate and easily performing data processing.

[0007]

That is, a data input device according to the present invention has a tablet, and input means for outputting coordinate data corresponding to a locus handwritten on the tablet, and an input means for inputting the coordinate data. Coordinate data storage means for sequentially storing coordinate data, coordinate element expansion means for expanding the position where the locus exists for one direction element of the coordinate data stored in this coordinate data storage means into one line, and this coordinate element A blank length determination means for determining whether or not there is a predetermined blank area or more in which the locus does not exist continuously in one direction of the coordinate data expanded in one line by the expansion means, and this blank length determination. If the method determines that there is a blank section that is longer than the specified section,
A unit data storage unit for storing coordinate data corresponding to a locus existing before the blank section as one unit of data.

[0008]

That is, in the data input device of the present invention, the coordinate data corresponding to the locus handwritten by the coordinate data input means is temporarily stored in the input order, and the coordinate data stored in this input order is stored. The position where the locus exists corresponding to the element in one direction (for example, the x coordinate) is developed in one line, and the locus is continuously present in the one direction locus of the coordinate data developed in this one line. If it is determined by this determination means that there is a blank section longer than the predetermined section, the coordinate data corresponding to the locus existing before the blank section is one unit. It will be stored as data.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an electronic circuit of a touch panel type information device equipped with the data input device of the present invention.

The electronic circuit of this information equipment has a control unit (CP
U) 11 and a tablet 12 are provided on a liquid crystal display panel 13 with a touch panel 14. The control unit (CPU) 11 operates according to a touch input operation signal input from the tablet 12 of the touch panel 14.
A system program stored in advance in M15 is activated to control the operation of each part of the circuit. The control unit (CPU) 11 includes the touch panel 14 (12, 1).
In addition to 3) and ROM 15, RAM 16 is connected.

The tablet 12 of the touch panel 14
Has a transparent touch area corresponding to the display area of the liquid crystal display panel 13 and is arranged so as to overlap with the display screen of the liquid crystal display panel 13. When the touch operation is performed, a voltage signal corresponding to the touch operation position is supplied to the control unit (CPU) 11 together with the touch input interrupt signal.

As a result, in the control unit (CPU) 11,
Based on the voltage signal supplied from the tablet 12,
The touch input coordinates for the liquid crystal display panel 13 are detected, and the content of the touch operation is determined based on the display content at that time, such as data specification of the touch input position and display of the touch input trajectory.

In the ROM 15, a system program for controlling the overall operation of the information device is stored in advance, and the coordinate data constituting the character string data input by handwriting is arranged in correspondence with the position indicated by the coordinate data. A sub-program corresponding to the installed function of the information device, such as a character string extraction processing program for storage management, is stored in advance.

The ROM 15 also stores font patterns such as all characters, numbers and symbol characters to be displayed on the liquid crystal display panel 13. FIG. 2 is a diagram showing a configuration of a register provided in the RAM 16 of the information device.

In the RAM 16, the handwriting buffer 16
a 1 dot line buffer 16b, processing dot position buffer 16c, start dot position buffer 16d, end dot position buffer 16e, division position memory 16f, character string number register 16g, and character string buffer 16h.

FIG. 3 is a diagram showing a handwritten input state of character string data on the touch panel 14 of the information device and a developed state of black dot data in the 1-dot line buffer 16b in the RAM 16 corresponding to the X coordinate of the character string data. Is.

FIG. 4 is a diagram showing a coordinate sampling state of handwritten data on the touch panel 14 of the information equipment, and FIG. 4A is a diagram showing positions of coordinate data sampled in accordance with handwriting input. FIG. 9B is a diagram showing a storage state in the handwriting buffer 16a of coordinate data sampled by handwriting input.

That is, the character data input by handwriting on the touch panel 14 is sampled as coordinate data (x1, y1) (x2, y2) ... By connecting and displaying with line segments, the character data associated with handwriting input is displayed (echo back display). The coordinate data (x1, y1) (x2, y2) ... Sampled at a constant cycle in accordance with handwriting input are stored in the handwriting buffer 16a in the RAM 16 in the order of input.

In the handwriting buffer 16a, a "pen-separation code" is written when the touch pen is released from the touch panel 14 in response to handwriting input. Then, in the 1-dot line buffer 16b in the RAM 16,
Black dot data for filling the space between the respective X-coordinates x1, x2, ... Corresponding to only the X-coordinates of each coordinate data (x1, y1) (x2, y2) ... Be expanded.

Next, the input operation in the touch panel type information equipment equipped with the data input device having the above construction will be described. FIG. 5 is a diagram showing a coordinate data storage state corresponding to the character string input of this embodiment in the handwriting buffer 16a in the RAM 16 of the information device.

FIG. 6 is a flow chart showing a character string extraction process accompanying the character input of the information equipment. FIG. 7 is a flowchart showing a line buffer expansion process in the character string extraction process of the information device.

FIG. 8 is a flowchart showing a division position / number setting process in the character string extraction process of the information equipment. FIG. 9 is a flowchart showing a character string writing process in the character string extracting process of the information device.

FIG. 10 is a diagram showing a coordinate data writing state to the character string buffer 16h in the RAM 16 accompanying the character string writing process in the character string extracting process of the information equipment.

For example, as shown in FIG. 3, the handwriting input operation with the touch pen is performed on the touch panel 14, and "A" → "C" → "D" → "ef" is input from the left side thereof, and then the ""B" in the space between "A" and "C"
5, the coordinate data obtained by sampling the input loci of the respective characters are sequentially stored in the handwriting buffer 16a in the RAM 16 as a coordinate sequence in the order of input as shown in FIG.

As described above, even if "ABC Def" is finally displayed on the touch panel 14, the RA
In the handwriting buffer 16a in the M16, the coordinate sequence of “AC” → the coordinate sequence of “D” → the coordinate sequence of “ef” → the coordinate sequence of “B” are sequentially stored in the input order. In this state,
When the character string extraction processing in is started, first, the RAM
In order to expand all the coordinate data stored in the handwriting buffer 16a in the 1-dot line buffer 16b in the 16-line, the process proceeds to the line buffer expansion process in FIG. 7 (step SA).

In this line buffer expansion processing, first,
The 1-dot line buffer 16b in the RAM 16 is cleared and the address pointer of the handwriting buffer 16a is reset to "0" and initialized (step A).
1).

Then, the handwriting buffer 16a (see FIG. 5).
Coordinate data (x1, y1) (x
Only the X coordinates (x1, x2, ...) Of 2, 2, y2) ... Are sequentially read from the head to the pen separation code, and the black dot data "1" is stored in the 1 dot line buffer 16b in correspondence with each X coordinate. It is written (step A2).

For example, regarding the handwritten data of "A" illustrated in FIG. 4, "1" is written between x1 and x2, between x2 and x3, and "1" is written between x4 and x5. As written, "1" so that it does not connect with "remove pen"
Is written.

In this way, for the coordinate data stored for each handwritten character with the pen separation code as a delimiter, the black dot data "1" corresponding to the locus between the X coordinates is sequentially and repeatedly written to the next pen separation code. When the process is repeated, the 1 dot line buffer 1
6b, as shown in FIG.
The existence locus corresponding to the X-direction component of the character string data input in 1 to 1 can be obtained (steps A2 and A).
3).

In this way, when the locus data corresponding to only the X-direction component of the character string data is written in the 1-dot line buffer 16b in the RAM 16, the division position and the division number of the character string data are obtained. Therefore, the process proceeds to the division position / number setting process in FIG. 8 (step S
B).

In this division position / number setting processing, first, R
Processing dot position register 16c, start dot position register 16d, end dot position register 16 in AM16
e, the memory contents of the division position memory 16f and the like are cleared and initialized (step B1).

Then, the processing dot position register 16
The processed dot position stored in c is sequentially updated (+1) and updated, and it is determined whether or not the black dot data “1” exists on each dot of the 1-dot line buffer 16b indicated by the processed dot position. It is sequentially judged from the first dot (steps B2, B3 → B4).

Incidentally, the processing dot position register 16c
When the processed dot position stored in the area reaches the final dot of the 1-dot line buffer 16b, the division position / number setting process is terminated (step B3 → Return).

Here, the 1-dot line buffer 16
When the processing dot position for b reaches the existence position (a) of the first black dot corresponding to the character data “A” (see FIG. 3), the processing dot position (a) at that time is the start dot position register. 16c and the end dot position register 16e (steps B4 → B5, B6).

Then, the processing dot position is further incremented (+1) and updated, and the processing dot position indicates 1
It is judged whether or not the black dot data “1” is continuously present on each dot of the dot line buffer 16b (steps B7, B8 → B9), where the character data in the step B4. In the state where it is determined that the black dots continuously exist in all the processed dots from the time when it is determined that the first black dot existing position (a) corresponding to “A” is reached, the end dot position register 16e is set.
Only the end dot position stored in step B7
Are repeatedly updated in accordance with the processing dot positions that are sequentially updated in (steps B6 to B9).

Then, the 1-dot line buffer 16
The processing dot position for b reaches the last black dot existence position (b) corresponding to the character data “A”, and this processing dot position (b) is written in the end dot position register 16e in step B6. In step B7, the processed dot position is further updated by (+1), and it is determined in step B9 that the black dot “1” existing corresponding to the character data “A” is interrupted.
Move to step B10. In step B10, a blank section (processing dot position-end dot position) is calculated, and it is determined whether the value has reached a dividable length corresponding to a predetermined number of dots set in advance. Since it is "0" at the beginning, the process returns to step B7, and the processing dot position is further updated and repeatedly determined (steps B7 to B1).
0).

Here, the predetermined number of dots is 10 dots, 5 dots between (b) and (c), and 4 dots between (d) and (e).
Assuming that there are 20 dots between the dots and (f) and (g), the processing dot position is updated in steps B7 to B10, and the blank section (processing dot position-end dot position) is updated.
Since the processing dot position reaches the existing position (c) of the first black dot corresponding to the next character data "B" without reaching the length of 10 dots that can be divided, the end dot position register 16e. The end dot position (b) stored in is updated to the current processed dot position (c) (steps B9 → B6).

After that, by the same processing as described above, the continuity judgment processing of the black dot data "1" in the 1-dot line buffer 16b (steps B6 to B9) and the judgment of whether or not the following blank section has reached the dividable length. The processing (steps B7 to B10) is repeatedly executed, and the end dot position (b) stored in the end dot position register 16e is sequentially updated as (c) → (d) → (e) → (f). Go away. Then, the processing dot positions are sequentially updated beyond the existing position of the black dot data "1" corresponding to the character data "C", and the blank section (processing dot position-end dot position) is set in advance to a predetermined value. If it is determined that the dividable length (10 dots) corresponding to the number of dots has been reached, the process proceeds from step B10 to step B11. Step B1
In step 1, the start dot position (a) already stored in the start dot position register 16d in step B5 and the end dot position (f) stored in the end dot position register 16e in step B6 are
In order to treat the character data "ABC" as one character string, the division start-end coordinates (XS1, XE1) of the first character string are written in the division position memory 16f, and the number of character strings in the character string number register 16g is Updated to "1".

After this, in the same manner as above, steps B2 to B1 are performed.
The process 1 is repeatedly executed, and the division position memory 16f
In contrast, each dot coordinate (XS2 to XE2) on the 1-dot line buffer 16b corresponding to the character data "D"
Is written as the start and end coordinates of the division of the second character string, and each dot coordinate (XS3 to XE3) on the 1-dot line buffer 16b corresponding to the character data "ef" is the start to end of the division of the third character string. It is written as coordinates and the number of character strings in the character string number register 16g is updated to "3".

Thereafter, in the processing of steps B2 to B4, the processing dot position stored in the processing dot position register 16c is repeatedly updated, and 1 dot remains without the presence of the black dot data "1" being determined. When it is determined that the final dot position of the line buffer 16b has been reached, this division position / number setting process is terminated and the process moves to the character string writing process in FIG. 9 (step B3 → S).
C).

In this character string writing process, first, the RAM
The memory contents of the character string buffer 16h in 16 are cleared and initialized (step C1). Then, the division start of the first character string stored in the division position memory 16f is started.
The end coordinates (XS1 to XE1) are read, the coordinate data having the X coordinate included between the division start to end coordinates (XS1 to XE1) is read from the handwriting buffer 16a (see FIG. 5), and the character string buffer 16h is read. Written in. That is,
In this case, the coordinate sequence of "AC" and the coordinate sequence of "B" are selectively read out, and as shown in FIG. 10A, as one unit of coordinate sequence data corresponding to the input range of the character data. It is written in the character string buffer 16h (step C2).

When it is determined that the division position memory 16f has division start-end coordinates (XS1 to XE1) following the first character string, the division start-end coordinates of the second character string are determined. (XS2 to XE2) and the division start to end coordinates (XS3 to XE3) of the third character string are sequentially read, and the respective division start to end coordinates (XS2 to XE2) and (XS3 to XE3) are read. The coordinate data corresponding to each character string having the included X coordinate is sequentially and selectively read out from the handwriting buffer 16a (see FIG. 5) as a “D” coordinate string and an “ef” coordinate string, and FIG. As shown in (B) and (C), it is written in the character string buffer 16h as one unit of coordinate string data corresponding to the input range of the character data (steps C3 → C2).

Therefore, according to the touch panel type information equipment equipped with the data input device having the above-mentioned configuration, the handwriting input of the character string data to the touch panel 14 is accompanied by the coordinate string data sampled corresponding to the locus of the character string. However, even if they are sequentially stored in the handwriting buffer 16a in the order of input, the locus relating to the X coordinate of the coordinate sequence data is
The black dot data "1" is developed in the 1-dot line buffer 16b as black dot data "1" that fills the locus between the X coordinates, and the black dot data "1" is continuously formed in the X-direction locus developed in the 1-dot line. When it is determined that the blank section that does not exist in the character string is equal to or longer than the predetermined dot length that allows character string division, it corresponds to the development locus of the 1-dot line that exists before the dividable blank section (for example, f to g). The X coordinate data (XS1 to XE1) of the start dot position (a) and the end dot position (f) is written in the division position memory 16f, and the input character string included between the division start to end coordinates (XS1 to XE1). Coordinate data of the handwriting buffer 16
Since it is selectively read from a and stored in the character string buffer 16h as one unit of coordinate string data, the touch panel 1
Even if the writing order of each character data to 4 is changed, the coordinate sequence data forming each character sequence can be stored and managed as one unit of data corresponding to the input position.

Therefore, for example, when an instruction to copy, delete, or correct the character string data existing in the same display area of the touch panel 14, the character string buffer 16h is irrelevant to the input order of the individual character data. The data can be collectively processed as one unit of coordinate sequence data stored and managed in.

Therefore, in the above-mentioned embodiment, the case where the input order of characters is not normal is explained. However, for example, when an underline is written under "D" and "ef", the second character string is added. Since the start-end coordinates of "g" are "j", "D ef" including underline can be treated as one data.

[0046]

As described above, according to the data input device of the present invention, the coordinate data input by the coordinate data input means is temporarily stored in the input order, and the coordinate stored in the input order. One-way element of data (eg x
The position where the locus exists corresponding to (coordinates) is expanded into one line, and 1 of the coordinate data expanded into this one line.
In the trajectory in the direction, it is determined whether or not there is a predetermined blank area or more in which the trajectory does not continuously exist, and when it is determined by this determination means that there is a blank area that is longer than the predetermined area, the blank area is located before the blank area. Since the coordinate data corresponding to the existing trajectory is stored as one unit of data, for example, the coordinate data input first and the coordinate data input later on the same coordinate area may not be stored and managed simply in the input order. Instead, it becomes possible to easily manage the data by storing and managing the data in a state in which the coordinates are associated with the positions indicated by the respective coordinates.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an electronic circuit of a touch panel type information device equipped with a data input device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a register provided in a RAM of the information device.

FIG. 3 is a diagram showing a handwritten input state of character string data on a touch panel of the information device and a developed state of black dot data with respect to a 1-dot line buffer in a RAM corresponding to an X coordinate of the character string data.

FIG. 4 is a diagram showing a coordinate sampling state of handwritten data on a touch panel of the information device, FIG. 4A is a diagram showing positions of coordinate data sampled with handwriting input, and FIG. The figure which shows the memory | storage state in the handwriting buffer of the coordinate data sampled with handwriting input.

FIG. 5 is a diagram showing a coordinate data storage state corresponding to a character string input in a handwriting buffer in a RAM of the information device.

FIG. 6 is a flowchart showing a character string extraction process associated with the character input of the information device.

FIG. 7 is a flowchart showing a line buffer expansion process in the character string extraction process of the information device.

FIG. 8 is a flowchart showing division position / number setting processing in the character string extraction processing of the information device.

FIG. 9 is a flowchart showing a character string writing process in the character string extracting process of the information device.

FIG. 10 is a diagram showing a state of coordinate data writing to a character string buffer in a RAM accompanying a character string writing process in a character string extracting process of the information device.

[Explanation of symbols]

11 ... Control unit (CPU), 12 ... Tablet, 13 ... Liquid crystal display panel, 14 ... Touch panel, 15 ... ROM, 1
6 ... RAM, 16a ... Handwriting buffer, 16b ... 1 dot line buffer, 16c ... Processing dot position register,
16d ... start dot position register, 16e ... end dot position register, 16f ... division position memory, 16g ... character string number register, 16h ... character string buffer.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuyoshi Kaneko 3-2-1 Sakaemachi, Hamura-shi, Tokyo Casio Computer Co., Ltd. Hamura Technical Center (72) Inventor Motoshi Kashiwagi 3-2-1 Sakaemachi, Hamura-shi, Tokyo No. 1 Casio Computer Co., Ltd. in Hamura Technical Center

Claims (4)

[Claims] 1. An input device having a tablet, which outputs coordinate data corresponding to a trajectory handwritten on the tablet, and coordinate data storage device which stores the coordinate data in the order input by the input device. Coordinate element expansion means for expanding the position where the locus exists for one direction element of the coordinate data stored in the coordinate data storage means into one line, and one of the coordinate data expanded into one line by the coordinate element expansion means. In the direction trajectory, there is a blank length determination means for determining whether or not there is a blank section in which the trajectory does not continuously exist, and the blank length determination means determines that there is a blank section longer than the predetermined section. In this case, a unit data storage means for storing the coordinate data corresponding to the trajectory existing before the blank section as one unit of data is provided. Data input device comprising. 2. The coordinate element expansion means is means for expanding an element in one direction of the coordinate data stored in the coordinate data storage means as a black dot between adjacent coordinate elements. Item 1. The data input device according to item 1. 3. The coordinate element expansion means further comprises:
In the one-way locus of the coordinate data expanded by black dots on the line, the start and end position storage means for storing the expansion start position and the end position of the black dot, and the blank length judgment means continuously connect the black dots. When it is determined that there is no blank section that does not exist for a predetermined period or more, the black dot expansion end position stored in the end position storage means is updated in accordance with the black dot expansion end position following the blank interval. The unit data storage means, when the blank length determination means determines that there is a blank section in which black dots do not continuously exist for a predetermined section or more, the start and end positions. It is a means for storing coordinate data corresponding to the locus between the expansion start position and the expansion end position stored in the storage means as one unit of data. Data input device according to claim 2, wherein. 4. The erasing means for erasing the data stored in the unit data storage means for each unit of the data, according to claim 1, 2 or 3. The data input device according to item 1.