JPS6272087A - Graphic inputting device - Google Patents

Abstract

PURPOSE:To recognize an on-line handwritten graphic and to improve an inputting speed of the graphic and operability by calculating velocity vector of a graphic from graphic coordinate information inputted from a tablet. CONSTITUTION:When writing is started by downing a pen at a point A, this is detected by an SECT 1002 and a signal to start operation is sent to a CRNR 1005. The CRNR 1005 calculates velocity vector of a handwritten graphic and detects corners. When termination of inputting of one graphic is transmitted from the SECT 1002, the CRNR 1005 terminates operation, and a TRANS 1006 recognizes the type of a graphic between corners from information sent from the CRNR 1005, and prepares a tentative graphic. The tentative graphic made by the TRANS 1006 is compared with a standard graphic of an STNDRD 1003, and fair copy graphic processing is made by a GRRPHP 1007.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a graphic input device, and particularly relates to a graphic input device that allows online handwritten graphic input ◇ [Technical Background of the Invention and Problems thereof] Inputting a graphic In the conventional device, as shown in Fig. 4, it is necessary to select multiple commands to specify the type and size of the figure, as well as specify the coordinate position of the figure to be input, via the tablet 4 and keyboard 3. There wasn't.

That is, move the stylus pen of the tablet 4 in FIG. 4 to select the middle box of the menu displayed on the CRT 2 (FIG. 5 Fl), then move the stylus pen of the tablet 4 to select the corner box. Indicate two points. (Referred to as F30 Kate in Figure 5).

When the above operations are completed, a rectangle with two points as diagonals will be displayed on the CRT. If you want to input a shape that represents a connector, such as a zero-order circle, select the connector from the degree menu again. (F1 in Figure 5), and then specify two points, the center and the outer periphery (F3 in Figure 5). Therefore, unless the operator is familiar with the operation method, it takes a lot of time and puts a heavy burden on the operator. Furthermore, two devices, the keyboard 3 and the tablet 4, had to be operated, and as a result, the space efficiency of installing the devices was poor.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a graphic input device that is easy to operate and improves the space efficiency of the device.

[Summary of the invention]

The present invention relates to a tablet on which handwritten characters or figures are drawn with a stylus pen, a figure input device main body into which coordinate information of the characters or figures drawn on the tablet is input, and a tablet on which handwritten characters or figures are drawn with a stylus pen. In a graphics input device that consists of an image display section on which characters or graphics are displayed, and a plotter that outputs the display contents of the image display section, the graphics input device main body determines the speed of the graphics based on the graphics coordinate information input from the tablet. means for calculating a vector; a figure type determining means for determining the type of figure from the velocity vector; a type figure memory means for storing the figure type in advance; a figure determined by the figure type determining means and the type figure memory; The present invention is characterized by comprising means for comparing the graphic type with the graphic type stored in the means and performing a clean-up graphic process.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 2 shows the overall configuration of the graphic input device according to the present invention.

Figures and characters are input by handwriting on the tablet 12 using a stylus pen 13. The CRTII displays the recognition result of the input handwritten characters, the handwritten input figures or the figures after the cleanup process, and also displays several command menus. The program 14 outputs a clear/1-scale drawing. The graphics input device main body 10 recognizes characters or graphics based on the coordinate data sent from the tablet 12. FIG. 1 shows a block diagram of the main body 10 of the graphic input device. In character recognition, the figure selection unit PICKZO (78, character recognition processing unit CHAR1004,
Corner detection unit CRNR1005, temporary figure creation unit 100
6. The graphic recognition processing unit GRAPHP1007 operates. Further, the standard figure 8TNDRDJoo3 is referred to in the figure recognition process. Other coordinate input section lN1000
．． Input end detection unit 5ECT1oo2゜Graphic and character memory MEMORYI009, CRT display control unit 1)
ST10r7. The coordinate position calculation unit LoCT1010 is a part that operates in common for character recognition and graphic recognition.

The operation of the present invention will be described with reference to an example of graphic input shown in FIG. FIG. 3(a) is an example of inputting a figure representing the process of a flowchart. On the other hand, in the present invention, in the configuration shown in FIG. 2, the stylus pen 13 is moved on the tablet 12 and displayed on the CRT II. Move the cursor near the grid point, move the pen down, and write as you would with a pen. There is no problem with pen-up for each line. After entering the shape of the box, lift the stylus pen 13 from the tablet 12 (it feels almost the same as writing with a pen). With the above, the cleanup figure is CR
TJJK is displayed. Next, when inputting the figure shown in FIG. 3(b), move the stylus pen 13 on the tablet 12 in the same way to bring the cursor displayed on the CRTII near the grid and circle it. write. Now, the cleanup figure is CR as shown on the arrow side in Figure 3(b).
TJJK will be displayed. There is no need for command selection by conventional devices. Also, there is no complexity such as the instruction method being different for a rectangle and a circle. The operation of the present invention when the operation shown in FIG. 3(a) is performed will be described with reference to FIG.

The coordinate value of the stylus pen 13 input via lN100O is passed to the CRNR4005.0 This value is also sent to the DSP at the same time.
Send it to CRTII via roll and display the handwritten figure.

What I started writing with the pen down at point A was 5ECT100.
2 detects and sends a signal to CRNRxoos to start operation. CRNRxoos calculates velocity vectors of handwritten shapes and detects corners. All input is completed 1
box), when the stylus pen 13 is removed from the tablet, the 5gCT1002 detects the end of one figure input, and the stylus pen 13 is removed from the tablet.
It is transmitted to RNRxoos and TRANS1006. When the end of one figure input is transmitted from 5ECT1002, CR
NRxoos finishes its operation, and TRANS1006
From the information sent from CRNRxoos, the type of figure between the corners (such as a straight line and a circle) is recognized, and a temporary figure is created. The temporary figure created by TRANS1006 is compared with the standard figure of 19TNDRD 100J, and GRRPHP 7 o 07 performs a clean-up figure process. At this time, in FIG. 3(a), it is recognized as a box, and the recognition result and coordinate values are passed to LOCTlolo. LOC
In TIOIO, from the recognition result and coordinate values, point A1 point B
It is determined that this is a box connecting one point C9, and this data is stored in MEMORYJf70!9 and also stored in D
It is sent to the CRTII via SProll, erases the handwritten figure that was displayed up to that point, and displays the clean-cut figure. In Figure 3(b), when inputting the shape of the connector, if you start drawing it in black and finish near point A, it will be written in the same way as G.
The RkPHP 1007 performs the cleanup graphic processing, and the cleanup graphic is displayed.

FIG. 3(c) shows the case where a character string is input.

In the prior art, a character string is input by specifying the shape in which the character string is to be inserted, then selecting a mode such as uppercase English letters, lowercase English letters, or kanji characters using the keyboard, and inputting the character string from the keyboard.

In the present invention, the cursor is moved into a figure in which a character string is to be inserted, the stylus pen 13 is moved down, and then raised again. Thereafter, characters to be written in the figure are input using the stylus pen 13 in the same manner as when writing with a pen.

Therefore, unlike the conventional technology, there is no need to select a mode.
Moreover, a keyboard is not required.

The operation of the present invention when this operation is performed will be described with reference to FIG. STF, CT100 via IN100O
Pen-down and pen-up are detected in I, and PICEI
Coordinate values are passed to oog.

PICKloog selects a figure into which a character string is to be inserted from among the already input figures based on the information from the MEMORY 1009. When you start writing, chHhRroo4
The stroke is determined from the coordinate values of the stylus pen 13 and character recognition is performed.Character recognition itself is described in known examples.

The position of the figure selected with PICK1008 and CHkR
LOCT 1010 calculates the character display position from the characters recognized in step 1004, stores it in %MEMORYJ00!9, and simultaneously displays it on CRTll via %DSP1011.

In the example of the figure input shown in FIG. 3(d) to the figure input shown in FIG. 3(i), a handwritten input figure and a handwritten figure are similarly taken as examples.

〔Effect of the invention〕

According to the graphic input device of the present invention, by recognizing online handwritten characters, a keyboard is not required, and since online handwritten figures are recognized, the figure input speed and operability are improved.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the main body part of the graphic input device of the present invention in detail, FIG. 2 is a block diagram of the graphic input device of the present invention in which the main body part and the input device are combined, and FIG. 3 is a block diagram showing the main body part of the graphic input device of the present invention in detail. Diagram 4 showing a display example of a figure input to a figure input device.
FIG. 5 is a diagram showing the configuration of equipment related to graphic input in a CAD system according to the prior art, and FIG. 5 is a flowchart of a graphic input operation using the device shown in FIG. 7゛ CAD system processing device, 2...CRT
. 3...Keyboard, 4...Tablet, 5...
Plotter, 10...Graphic input device main body, 11...C
RT. 12...Tablet, 13...Stylus pen, 1
4...Block. (fノ ・71'-(=2X= ・-CD , / ---"-Th, (, z)

Claims (1)

[Claims] a tablet on which handwritten characters or figures are drawn with a stylus pen; a figure input device body into which coordinate information of the letters or figures drawn on the tablet is input;
In a graphic input device consisting of an image display section on which handwritten characters or figures and cleaned-up characters or figures are displayed, and a plotter that outputs the display contents of the image display section, the figure input device main body receives input from a tablet. means for calculating a velocity vector of a figure from the figure coordinate information to be displayed; a figure type determining means for determining the type of figure from the velocity vector; a type figure memory means for storing the figure type in advance; A graphic input device comprising means for comparing the determined graphic with a graphic type stored in the type graphic memory means and performing a clean-up graphic process.