JPH08235121A - Handwriting input device - Google Patents

Abstract

PURPOSE: To improve the expressiveness of handwriting accompanying input and display without fixing the input range and output range of the input area and output area of the handwriting input device whose touch type input/output area is divided. CONSTITUTION: When the input height (a=30) of the input area 14a and the output height (b=20) of the output area 14b are set on a data selection screen T for input screen setting on the touch panel 14 and handwriting data 'abc' are inputted, coordinate string data detected corresponding to the input track are stored in an input buffer in a RAM and expanded in an echo-back buffer to make a track display. When sectioning operation in one-word units is done by an 'SP' key 23, the coordinate data stored in the input buffer are converted on the basis of the set ratio (b/a) of the input height (a) and output height (b) and the image data are stored in an output buffer and displayed while reduced to 2/3 time as large as the output buffer 14b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handwriting input device applied to an information terminal device such as a portable information communication device or an electronic notebook equipped with a touch panel type display screen.

[0002]

2. Description of the Related Art Conventionally, in an information terminal device having a touch panel type display screen, a handwritten character string can be input and displayed by operating the touch panel. in this case,
The character string displayed by handwriting input is character-recognized and converted into code data and displayed as a corresponding font pattern, or the input handwritten character string is displayed as it is.

On the other hand, in such a handwriting input device, an input area for handwriting input by pressing the touch panel and an output area for displaying handwritten data whose input has been confirmed in this input area are separate areas. There are those that are divided into.

[0004]

However, in the above-mentioned conventional handwriting input device, generally, the input range and the output range of each of the input area and the output area are fixed one to one, for example, There is a problem that handwriting expressiveness associated with input and display is limited.

The present invention has been made in view of the above-mentioned problems. The input range and the output range of each of the input area and the output area are not fixed, and the handwriting expressive power associated with input and display is improved. An object is to provide a handwriting input device that can be improved.

[0006]

That is, the first handwriting input device according to the present invention has a display unit and a coordinate input device which are integrated to achieve the above-mentioned object. An input area and an output area are separated, and a conversion ratio storage means for storing a plurality of types of conversion ratios corresponding to the ratio of the sizes of the input area and the output area, and the conversion ratio storage means The conversion ratio selecting means for selecting one of the plurality of conversion ratios, the input coordinate storing means for storing the coordinate data input in the input area, and the coordinate data stored in the input coordinate storing means. Input coordinate conversion means for converting at the conversion ratio selected by the conversion ratio selection means, and output data corresponding to the coordinate data converted by the input coordinate conversion means are output to the output area. Characterized by comprising an output means for.

A second handwriting input device according to the present invention is the first handwriting input device, further comprising the input in the input area according to the conversion ratio selected by the conversion ratio selecting means. It is characterized in that a range display means for displaying a range is provided.

[0008]

That is, in the first handwriting input device, one of the plurality of input / output conversion ratios stored in the conversion ratio storage means is selected by the conversion ratio selection means, and the coordinate data input in the input area is input. When stored in the coordinate storage means, the coordinate data stored in the input coordinate storage means is converted at the conversion ratio selected by the conversion ratio selection means,
Output data corresponding to the converted coordinate data is output to the output area.

Further, in the second handwriting input device, in the first handwriting input device, the input range is indicated in the input area according to the conversion ratio selected by the conversion ratio selecting means. Will be done.

[0010]

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

The electronic circuit of this portable information terminal device includes a control unit (CPU) 11, a tablet 12 as a coordinate input device, and a liquid crystal display panel 13 as a display device.
It is equipped with a touch panel 14 that is integrated with.

The control unit (CPU) 11 activates a system program previously stored in the ROM 15 in accordance with a touch input operation signal input from the tablet 12 via the tablet control unit 12a, and controls the operation of each circuit unit. The control unit (CPU) 11 includes a tablet control unit 12a, a tablet 12, and an RO.
In addition to M15, the RAM 16 is connected and the conversion ratio table storage unit 17 is connected.

The liquid crystal display panel 13 is connected to the control unit (CPU) 11 via a display driver 13a. The tablet 12 of the touch panel 14 is
The touch panel has a transparent touch area corresponding to the display area of the liquid crystal display panel 13 and is arranged so as to overlap the display screen of the liquid crystal display panel 13, and any point on the tablet 12 is touched by a touch pen or the like. When operated, a voltage signal corresponding to the touch operation position is transmitted to the tablet control unit 12.
control unit (CP
U) 11.

As a result, in the control unit (CPU) 11,
Based on the voltage signal supplied from the tablet 12 via the tablet controller 12a, the liquid crystal display panel 1
The touch input coordinates for 3 are detected, the touch input trajectory is displayed, and the content of the touch operation is determined based on the display content at that time.

The ROM 15 stores in advance a system program that controls the overall operation of the portable information terminal device, and a handwriting input that is activated in response to a menu selection processing program or a handwriting operation with a touch pen or the like on the touch panel 14. Subprograms corresponding to various operation modes such as processing programs are stored in advance.

The ROM 15 also stores, as a character generator, 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 display state on the touch panel 14 in each of the input screen setting mode and the handwriting input mode of the portable information terminal device. FIG. 2A shows setting data accompanying the input screen setting mode. The figure which shows a selection display state, the figure (B) is a figure which shows the input and output display state of the handwriting data accompanying a handwriting input mode, and the figure (C) is an input area setting line L accompanying a handwriting input mode. It is a figure which shows the display state of.

Here, the touch panel 14 has an input area 14a for displaying the data selection screen T for setting the input screen and for performing a handwriting input operation with a touch pen or the like.
And an output area 14b for displaying handwritten data whose input is confirmed in the input area 14a, which are divided into a lower stage and an upper stage, respectively.
2A shows a state in which a data selection screen T for input screen setting is displayed in the input area 14a of the touch panel 14, and FIGS. 2B and 2C show the touch panel 1 respectively.
4 is a state in which the size ratio (b / a) in the height direction of the input area 14a and the output area 14b of No. 4 is changed.

Input area 14a of the touch panel 14
A "menu" key 21 operated when displaying a menu selection screen and a "clear" key 22 operated when deleting data are constantly displayed at the right end of the In the setting state,
The "SP" (space) key 23 operated when dividing the handwritten input data into word units is displayed.

That is, as shown in FIG. 2A, in the input screen setting data selection screen T displayed in the input area 14a of the touch panel 14, for example, the input height size is "30" and the output height size is 2 is selected as "20", the height of the input area 14a is set to 30 dots and the height of the output area 14b is set to 20 dots, as shown in FIG.

If, for example, both the input height and the output height are selected as "20", the heights of the input area 14a and the output area 14b are both set to 20 dots as shown in FIG. 2C. And input area 14a
, The input area setting line L indicating the setting size is displayed.

As shown in FIG. 2B or 2C, the locus of the handwritten data input by handwriting in the input area 14a of the touch panel 14 has a touch position coordinate (x, y) at a constant cycle. And the sampled coordinates (x1, y1) (x2, y2
) ... (Xn, yn) are displayed by sequentially drawing (echo back display).

The handwritten data is determined word by word in accordance with the delimiting operation by the "SP" key 23 and displayed in the output area 14b. In this case, the input area 14
Each coordinate data (x1, y1) (x2, y2) ... (xn, yn) obtained by sampling the handwritten data in a is
Coordinate conversion is performed according to the ratio (b / a) of the input height size (a) and the output height size (b), and handwritten data that matches the size of the output area 14b is displayed.

On the other hand, the RAM 16 includes an input buffer 16a, an echo back buffer 16b, and an output buffer 1.
6c etc. are provided. In the input buffer 16a, coordinate data (x1, y1) (x2, y2) ... (xn, yn) corresponding to handwritten loci input by a touch operation in the input area 14a of the touch panel 14.
Is memorized.

In the echo back buffer 16b, image data in which each coordinate stored in the input buffer 16a is connected by a line segment is stored as bitmap data.

The output buffer 16c has a storage area of a display dot pattern corresponding to the output area 14b of the touch panel 14, and the output area 16c.
Indicates that the handwritten image data stored as a bitmap pattern in the echo back buffer 16b has a set size ratio (b / b) between the input height (a) and the output height (b).
The coordinates are converted based on a) and stored as display target data.

The conversion ratio table storage unit 17 stores a data selection screen T for setting the input screen "see FIG. 2 (A)".
The input height size (a) of the input area 14a and the output height size (b) of the output area 14b that can be selectively set in (1) are stored in advance.

Next, the operation of the portable information terminal device equipped with the handwriting input device having the above configuration will be described. FIG.
6 is a flowchart showing an input screen setting process accompanying the menu selection process of the portable information terminal device.

FIG. 4 is a flow chart showing a handwriting input process of the portable information terminal device. That is, before inputting handwritten data using the touch panel 14, to set the area size of each of the input area 14a and the output area 14b, touch the "menu" key 21 displayed at the right end of the input area 14a. When a setting menu of the input screen is selected with the menu selection screen (not shown) displayed in the input area 14a
As shown in (A), a data selection screen T for input screen setting is displayed (steps S1 → S2).

In the data selection screen T for setting the input screen, the input height setting data, for example, "30" (full size) and the output height setting data, for example, "20" (full size) are selected and set, When the “confirm” key K1 is operated, the input height size (a) and the output height size (b) stored in the conversion ratio table storage unit 17 are designated as “30” and FIG. 2B, respectively. As shown in 3
Input areas 14a and 20do set to 0dots input height
The divided display state with the output area 14b set to the output height of ts is set (steps S3 → S4).

In this way, when the area size of each of the input area 14a and the output area 14b on the touch panel 14 is set by the setting processing of the input screen,
The handwriting input process in FIG. 4 is started.

In this handwriting input process, first, it is determined whether the input height (a) of the input area 14a set by the input screen setting process is 30 dots of full size or 20 dots (step A1).

Here, by the setting process of the input screen,
For example, input height (a) is not 30 dots full size,
When it is set to 20 dots, as shown in FIG. 2C, the input area 14a of the touch panel 14 displays an input area setting line L indicating the area size (steps A1 → A2).

Then, handwriting is input in the input area 14a of the touch panel 14, for example, "ab
When “c” is handwritten, the coordinate data corresponding to the input locus is sequentially sampled, so that it is determined that handwriting is input to the input area 14a, and the handwriting data “abc” is sampled corresponding to the input position. Each coordinate data to go (x1, y2) (x2, y2)
Are sequentially stored in the input buffer 16a in the RAM 16 (steps A3 → A4 → A5).

Then, each coordinate data (x1, y1) (x2, y2) stored in the input buffer 16a is ...
The line segment image data connecting (xn, yn) is sequentially written in the echo back buffer 16b, and the locus of "abc" accompanying the handwriting input is drawn and displayed on the input area 14a (step A6).

In this way, the echo back display accompanying the handwriting input is repeated, and while the input locus of the handwriting data "abc" is displayed in the input area 14a of the touch panel 14, one word is pressed by the "SP" key 22. When the unit delimiter operation is performed, it is determined that there is a delimiter operation of the handwritten data by the "SP" key 22 based on the key sampling signal corresponding to the "SP" key 22, and the handwritten data stored in the input buffer 16a. Input area 14a and output area 14b of the input coordinate data corresponding to
Of the coordinate conversion processing according to the set size ratio (b / a) and the writing processing of the echo back display image data corresponding to the coordinate data after the coordinate conversion to the output buffer 16c (steps A3 and A4). → A7).

That is, a series of coordinate data which constitutes the handwritten data "abc" read from the input buffer 16a is stored in the input area 14a designated by the conversion ratio table storage unit 17 according to the following equation (1). The output buffer 1 is converted and corrected into coordinate values that match the large and small dot ratios of the input height (a) and the output height (b) of the output area 14b.
6c is expanded and stored as image data for echo back display (step A7).

(X, y) ← [{x × (b / a)}, {y × (b / a)}] Equation (1) That is, as shown in FIG. 14
When the input height (a) of a is set to "30" and the output height (b) of the output area 14b is set to "20", the handwritten image data "abc" input and displayed in the input area 14a is , Adjusted to the output area 14b (2/3)
Output buffer 1 converted to image data of size
6c is stored.

As a result, the handwritten image data stored in the output buffer 16c is displayed in the output area 14b in a size corresponding to the area size (step A8).

Then, the handwritten coordinate data and its image data stored in the input buffer 16a and the echo back buffer 16b are all cleared, and the handwritten data "ab" displayed in the input area 14a.
c ”is erased (step A9).

On the other hand, for example, the input height (a) of the input area 14a is "30" and the output height (b) of the output area 14b.
If is set to “10”, input area 14
Handwritten image data "abc" input and displayed at "a"
Is converted into image data of a size (1/3) that fits the output area 14b, stored in the output buffer 16c, and displayed on the output area 14b in a size that fits the area size (step A7, A8).

In the above embodiment, the size is designated by the number of dots, but it may be designated by the unit of length "mm". Therefore, according to the portable information terminal device equipped with the handwriting input device having the above configuration, in the data selection screen T for input screen setting on the touch panel 14, the input height (a) of the input area 14a and the output height (a) of the output area 14b ( b), for example, a = 30dot
When s, b = 20 dots is set and handwritten data “abc” is input in the input area 14a, a series of coordinate data sampled corresponding to the input locus is R.
It is stored in the input buffer 16a in the AM 16 and is expanded in the echo back buffer 16b and displayed as a locus.
When the word-by-word segmentation operation is performed by the "SP" key 23, the coordinate data stored in the input buffer 16a becomes the set ratio (b) of the input height (a) and the output height (b).
/ A) and the image data is stored in the output buffer 16c and the output area 14b is converted.
Since it is displayed in a reduced size of 2/3, the input range of the input area 14a for handwriting input and the output range of the output area 14b for displaying and outputting the final data of the handwriting are set to desired sizes. Can be changed and set
It is possible to significantly improve the expressive power of handwritten data accompanying input and display.

If the input height (a) selected and set for the input area 14a of the touch panel 14 is less than 30 dots of the full size, the input area 14a
Since the input area setting line L indicating the range of a is displayed, even when the area size is changed and set,
It is possible to easily perform handwriting data input operation according to the set size.

[0044]

As described above, according to the first handwriting input device of the present invention, one of a plurality of types of input / output conversion ratios stored in the conversion ratio storage means is selected by the conversion ratio selection means and input. When the coordinate data input in the area is stored in the input coordinate storage means, the coordinate data stored in the input coordinate storage means is converted at the conversion ratio selected by the conversion ratio selection means, and the converted coordinates are converted. Output data corresponding to the data will be output to the output area.

Further, according to the second handwriting input device of the present invention, in the first handwriting input device, further, in the input area according to the conversion ratio selected by the conversion ratio selecting means. The input range will be specified.

Therefore, according to the present invention, it is possible to improve the expressiveness of handwriting accompanying input and display without fixing the input range and the output range of the input area and the output area.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an electronic circuit of a portable information terminal device equipped with a handwriting input device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a display state on a touch panel in each of an input screen setting mode and a handwriting input mode of the portable information terminal device. FIG. 2A is a selection display state of setting data accompanying the input screen setting mode. FIG. 6B is a diagram showing an input and output display state of handwriting data in the handwriting input mode, and FIG. 7C is a display state of the input area setting line L in the handwriting input mode. FIG.

FIG. 3 is a flowchart showing an input screen setting process accompanying the menu selection process of the portable information terminal device.

FIG. 4 is a flowchart showing a handwriting input process of the portable information terminal device.

[Explanation of symbols]

11 ... Control unit (CPU), 12 ... Tablet, 12a ...
Tablet controller, 13 ... Liquid crystal display panel, 13a ... Display driver, 14 ... Touch panel, 14a ... Input area, 14b ... Output area, 15 ... ROM, 16 ... RA
M, 16a ... Input buffer, 16b ... Echo back buffer, 16c ... Output buffer, 17 ... Conversion ratio table storage unit, 21 ... "Menu" key, 22 ... "Clear" key, 23 ... "SP" key, (a) ... input height, (b) ... output height, T ... data selection screen for input screen setting, K1 ...
"Enter" key, K2 ... "Cancel" key, L ... Input area setting line.

 ─────────────────────────────────────────────────── ─── 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 (2)

[Claims] 1. A handwriting input device in which a display unit and a coordinate input device are integrally formed, and an input area and an output area are separated from each other on a display screen thereof. A conversion ratio storage means for storing a plurality of conversion ratios corresponding to the ratio, and one of the plurality of conversion ratios stored in the conversion ratio storage means.
Conversion ratio selecting means for selecting one, input coordinate storing means for storing coordinate data input in the input area, and coordinate data stored in the input coordinate storing means for conversion selected by the conversion ratio selecting means. A handwriting input device comprising: input coordinate conversion means for converting by a ratio; and output means for outputting output data corresponding to the coordinate data converted by the input coordinate conversion means to the output area. 2. The handwriting according to claim 1, further comprising range display means for displaying the input range in the input area according to the conversion ratio selected by the conversion ratio selection means. Input device.