JPH01211021A - Character input device - Google Patents

Abstract

PURPOSE:To move a cursor serving as a character frame with no cursor shift operation by setting newly a frame at the position where a stylus pen is turned on after it is discriminated that the input coordinate data on the handwritten characters are set outside a specific frame. CONSTITUTION:When an input action is started, a tablet 5 detects successively the positions of a stylus pen and adds these detected positions to a comparison part 10 via a data input part 6 to discriminate the presence or absence of the turn-on (pen-down) state of the pen. Then the strokes, i.e., the preceding and present coordinates are connected to each other via a straight line when it is discriminated that the received coordinates are set within a character frame stored in a character frame coordinate storing buffer 11. In case no pen-down state is discriminated at discrimination of the pen-down state, the pen position is detected again because the pen is moved. Then the position of a character frame is decided when the coordinates are set outside the character frame, i.e., the coordinates supplied in a pen-down state are set outside the frame.

Description

[Detailed Description of the Invention] [Summary] The purpose of the present invention is to provide a character input device for inputting handwritten characters, which has excellent operability without sacrificing the advantages of handwritten input. A coordinate comparing means for adding character input coordinate data and determining whether the input coordinate data is data indicating outside the specific frame; and when the coordinate comparing means determines that the input coordinate data is outside the specific frame, and frame moving means for moving the specific frame.

[Industrial application field]

The present invention relates to an input device for computers and the like, and more particularly to a character input device for inputting handwritten characters.

[Conventional technology]

An input device is required to operate a system using a processor, such as a computer. Conventionally, input has been performed using a keyboard or the like as this input device, but key operations are complicated when inputting data including kanji. In order to simplify this operation, a method has been developed and put into practical use in which characters are written on a tablet and the characters are input using the coordinate data of the written characters. In particular, a method is often used in which characters input from coordinate data are recognized and input into the device.

FIG. 9 is an explanatory diagram of a conventional method for inputting character coordinate data using a tablet. A handwriting input area X is provided on the tablet 1, and characters are input by writing them in preset character frames (there are 12 frames in FIG. 9). And the input result is C
Displayed on the RT2 screen. For example rCJ rOJ
rMJ rPJrUJ rTJ rEJ rR
J and write a character in each frame (and generate a character from the coordinate data of the placed character in the frame, and send the character to the CRT2 by rc)
"OMPUTER" is displayed. For example, when recognition is being performed, characters are recognized from the aforementioned coordinate data and the results are displayed. Here, the display position of this character is ↑, -1 provided in the cursor movement area Y on the tablet 1.
Move by touching the ↓ and - areas with the stylus pen P. For example, by touching the ↓ area three times and then touching one area six times, the cursor CI displayed on the CRT 2 in FIG. 9 is moved to the position of the cursor C2.

[Problem to be solved by the invention]

In the character input method described above, the cursor movement area must be touched with a stylus pen to move the cursor every time a character is input, whether or not the input character is recognized. , there was a problem in that unnecessary movement of the viewpoint was forced.

Further, in the above-mentioned conventional method, since one touch can only move one character, there is a problem that the number of touches increases when the next position to be written is far away.

In other words, there is a problem in that the advantage of handwritten input, which originally has good operability as its main point, is significantly impaired.

An object of the present invention is to provide a character input device with excellent operability without sacrificing the advantages of handwritten input.

[Means to solve the problem]

FIG. 1 is a functional block diagram of the present invention.

Coordinate comparison 'f! At t3, it is determined whether the input coordinate data of handwritten characters inputted from an external device such as a tablet is data indicating outside the specific frame.

The frame moving means 4 moves the specific frame in relation to the input coordinates when the coordinate comparing means 3 determines that it is outside the specific frame.

The movement of this specific frame is, for example, movement with the coordinates specified by the input coordinates as the center of the frame.

[For production]

When the input coordinate data of handwritten characters is added, the coordinate comparison means 3 determines whether the input coordinate data is outside the specific frame.

The frame is, for example, a frame for one character to be entered on a tablet, etc.
If the frame moving means 4 determines that the input coordinate data is outside the frame, it can set a new frame at the position where the stylus pen is turned on.

〔Example〕

Hereinafter, the present invention will be explained in detail using the drawings.

FIG. 2 is a block diagram of an embodiment of the present invention. tablet 5
is a coordinate input device, which, although not shown, reads the coordinates at the tip of the stylus pen by pointing the top surface of the tablet with the stylus pen. The stylus pen also has a switch, which turns on when the stylus touches the top surface of the tablet, and turns off when the top surface of the tablet is not touched. From the information of this switch, it can be determined whether the stylus pen is in a state of inputting characters or the like or not. Note that the tablet 5 sequentially reads the coordinates without depending on whether the stylus pen is turned on or off.

That is, the tablet always detects and outputs the switch information S, the pen tip coordinates Xp, )'P.

Coordinates etc. (S, xp
, yp) are added to the data input section 6.

A display device (CR
T) The coordinates of the position where 7 should be displayed do not match, and the data input unit 6 inputs the tablet 5 to match the coordinates.
Convert the coordinates added from to display coordinates. Furthermore, from the coordinates, when the stylus pen is switched on, the coordinates that are added sequentially are connected with a straight line (stroke), and the display control unit 8
Add to.

Then, the display control unit 8 displays the data connected by the straight line on the CRTT.

FIG. 6 is an explanatory diagram of the stroke of the stylus pen. When the operator writes "a", the seats i are added sequentially.
The negative eyes of "A" are expressed by the voting points OP+ to OPt, and the points OP+ and OP2 are straight lines, and similarly the points OP2 and O
P3 is further displayed with point OPko and point OPa connected by a straight line.

Similarly, when the stylus pen is switched on, each point is connected with a straight line, making one stroke.

The above-mentioned operation is an operation of displaying the written characters on the CRT 7 when the operator writes characters on the tablet 5 with the stylus pen. The input operation is when a character is written in a specific area (character frame) on the tablet using a stylus pen.

On the other hand, the character frame coordinate storage buffer 11 has added character frame coordinates from the character frame coordinate update control section 9, which will be described later, and the character frame coordinate storage buffer 11 stores this data and outputs it to the display control section 8. do.

FIG. 5 is a coordinate diagram of the frame. The character frame coordinate update control unit 9 determines the coordinates of the upper right corner of the frame Y (X, e, Y e ), the coordinates of the lower left corner (Xs, Ys), and its center coordinate (X C ).

YC), and the character frame coordinate storage buffer 11 stores those coordinates. The character frame to be filled in is displayed on the CRT 7 by this storage in the character frame coordinate storage buffer 11 and further output to the display control section 8.

The character frame described above is moved by the operator's operation, and this movement is performed by the comparison unit 10 and the character frame coordinate update control unit 9.

The comparison unit 10 includes the input coordinate data of the data input unit 6 and the character frame coordinates stored in the character frame coordinate storage buffer 11, and the character coordinates to be input from the data input unit 6 are indicated by the character frame coordinates. The comparison unit 10 compares whether or not the text exists within the character frame.

Then, when coordinates that are not within the character frame specified by the character frame coordinates are added from the data input section 6, the comparison section 10 outputs the result of the mismatch to the character frame coordinate update control section 9 and the display control section 8. Note that the comparison unit 10 determines whether or not the screen is within the frame only when the stylus pen touches the top surface of the tablet 5.

When the above-mentioned comparison unit 10 determines that it is outside the frame, the display control unit 8 to which the result is added erases the currently displayed frame, and the character frame coordinate update control unit 9 creates a new frame from the coordinates added from the data input unit 6. It generates the coordinates of , displays a new frame on the CRT 7, and also stores the character frame coordinates storage buffer 11.
Store in.

This action causes the pen to turn off (switch off) once outside the frame.
After moving in the state, the frame moves to the position where the pen is turned on (switched on). Then, when the pen is turned on again, the display control section 8 adds the coordinates added from the data input section 6 to the frame output from the character frame coordinate storage buffer 11 (if the pen is within the frame). The coordinates of a straight line connecting each point so as to form a continuous line are displayed on the CRT 7.

FIG. 3 is an explanatory diagram of the present invention. If r COMPUTERJ is written on the top of the tablet 5, each letter C is written in sequence.
, O, M, P, U, T, E, R frames move and the operator writes the characters (thus, the characters are displayed on the CRT 7. Then, after writing R, the stylus pen P1
When the character frame X is moved down to an arbitrary position outside the frame, the character frame X moves to that position.

FIG. 4 shows a detailed explanation of the present invention. When the input operation of the apparatus is started, the tablet 5 sequentially detects the position of the pen (reads the coordinates) Sl, and inputs it to the comparison section 10 via the data input section 6. The comparing unit 10 first determines whether the stylus pen is on or not, that is, whether the pen is down (S2), and then determines whether the added coordinates are within the character frame stored in the character frame coordinate storage buffer 11 (S3). do. If it is determined in the determination S3 that the current coordinate is within the character frame, a stroke, that is, the previous coordinates and the current coordinates are connected with a straight line (stroke), and displayed on the CRT 7 (S4) (the stroke is echoed back). Note that the process S4 is performed by the data input unit 6,
The coordinates immediately after the stylus pen is turned on are determined to be the start point of the stroke, and from the next added coordinate, that coordinate and the previous coordinate are connected with a straight line to form a stroke.

The converted coordinates from the data input unit 6 are sequentially added to the comparison unit 10, and the comparison unit 10 constantly determines whether or not the pen is down, and performs determination S5 as to whether the pen is down during processing S4. When the pen is down (YIF, S
), the data input section 6 continues the process S4. On the other hand, if the pen is not down in the determination S5, the echo back process is completed, the pen position detection S1 is performed again, and the same process as described above is performed.

On the other hand, when it is determined that the pen is not down in the pen-down determination S2 (No), the pen is being moved, so the determination S1 is performed again. Then, when the determination S3 is No, that is, when the coordinates inputted with the pen down are outside the frame, the position of the character frame is determined.

FIG. 7 is a block diagram of a second embodiment of the tablet display of the present invention. In the configuration shown in FIG. 2, a CRT is used as the display device, but in the second embodiment, a flat display 12 such as a plasma display or an LCD display is used. A transparent tablet 13 is used as the tablet, and the tablet is provided above the flat display 12. Control unit 1
4, a tablet 13, and a display 12, the configuration is similar to that shown in FIG.

In the configuration shown in FIG. 7, the tablet 13 and the display 12 are integrated, and if the point on the display 12 at the position indicated on the tablet 13 is, for example, a plasma display, it lights up.

Also, if it is an LCD display, it will be a black dot.

If the stylus pen P is moved while the switch of the stylus pen P remains on, the locus of the movement is illuminated or becomes black. FIG. 8 shows the second embodiment of the present invention.
FIG. 2 is an explanatory diagram of the operation of the embodiment. For example, display 13
When character frame K is displayed on the upper left side (Figure 8 (A))
When the operator writes the character "C" with the stylus pen P, the character is displayed along the movement.

(Figure 8(B)). Then, when the character C'' has been written, move the stylus pen P toward the lower right with the pen amplifier (switch off) and move the pen down (8th
8(C)), the character frame K is moved to the position indicated by the pen, and '' is displayed in the character frame (FIG. 8(D)).

The operator can decide to which position to move the frame relative to the previous character frame K while looking at the position.Furthermore, since there is no need to touch the cursor movement key, the character input position i! 2 (the position to be touched with the squirrel pen) can be filled in while looking at the mark, so it is possible to input without taking the viewpoint away from the writing frame.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to move the cursor, which is a character frame, to a desired position without performing a touch operation on a cursor movement key, etc., resulting in improved operability with less movement of the viewpoint. An excellent character input device can be provided.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the principle of the present invention. FIG. 2 is a configuration diagram of an embodiment of the present invention. FIG. 3 is an explanatory diagram of the present invention. FIG. 4 is an explanatory diagram of the operation of the present invention. The figure is a coordinate diagram of the frame, Figure 6 is an explanatory diagram of stroke operation, Figure 7 is an R4 diagram of the tablet and display, and Figure 8 is a diagram of the r4 configuration of the tablet and display.
Figures (A) to (D) are explanatory diagrams of the operation of the present invention, and Figure 9 is
FIG. 2 is an explanatory diagram of a conventional method. 3... Coordinate comparison means, 4... Frame moving means, Patent applicant Fujitsu Ltd. Honkyosho 01 work 8 Genji map 4 Coordinate map of the style Figure 5 Stroke movement 4 Familiar map No. Figure 6 Diagram of the structure of Daaret and Lasplay Figure 1 7

Claims (1)

[Claims] Coordinate comparison means (3) for adding input coordinate data of document characters and determining whether the input coordinate data is data indicating outside a specific frame; Frame moving means (4) for moving the specific frame in relation to the input coordinates when it is determined that the frame is outside the frame;
) A character input device comprising: