JPS61282972A - Graphic input equipment - Google Patents

Abstract

PURPOSE:To improve remarkably the input speed of a graphic and operability by combining the recognition of a hand-written character, that of a hand-drawn graphic and the calculation of an approaching degree between graphics and generating a drawing made to a fair copy from the graphic. CONSTITUTION:The graphic and character are inputted by hand-writing with a stylus pen 13. A CRT 11 displays the recognized result of the hand-written character and hand-drawn graphic or its fair copy, and a plotter 14 outputs the fair copy of the drawing. On the basis of coordinate data transmitted from a tablet 12, a graphic input device main body 10 causes a CREC 103 recognizing a character to operate in terms of character recognition, and a pick detecting part 102, a graphic recognizing part 104, an approaching degree calculating part 105, a coordinate value calculating part 106 and an end point and contact point calculating part 107 to operate in terms of graphic recognition. A coordinate value input part 100, a stroke end detecting part 101, a graphic memory 108, a CRT display control part 109 and a plotter control part 110 act both in character and graphic recognitions.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention is directed to CAi) (Computer Aided
i) eaign) System (2) This invention relates to a figure input device that allows the figure to be input online manually when inputting a figure.

[Technical background of the invention and its problems]

CAi) System (2 figures, % 2, mechanical drawings ≦ 2 diagrams used) When inputting @Conventional equipment, when multiple similar commands of various i10 types are selected and combined via tablet and keyboard, It was necessary to carefully examine the shape that one wanted to input.This required a great deal of time and a heavy burden on the operator if the user was not familiar with the operation method. 6
As shown in Figure 2, two devices, a keyboard and a tablet, had to be operated, so the space efficiency of installing the devices was poor.

[Purpose of the invention]

The present invention has been made to overcome the drawbacks of the prior art as described above, and provides a method C' for operating a CAD system that is easy to operate even for an unskilled designer and that can be easily operated at the designer's desk.
The purpose of the present invention is to provide a highly space-efficient graphic input device that can be reinstalled twice.

[Summary of the invention]

The present invention combines handwritten character recognition, handwritten figure recognition, and direct calculation of proximity between figures (2. Therefore, instructions equivalent to conventional commands are recognized inside the device (2. This is a graphic input device that calculates and generates a clean-cut drawing from 9 manually inputted characters and graphics.

[Embodiments of the invention]

The overall configuration of the drawing input device according to the present invention C2 is shown in FIG.

The CRT 11 displays the recognition result of the input handwritten characters, the handwritten input figures, or the figures after being cleaned up, and also displays several command menus. Block 14 outputs the cleansed drawing.

The figure input device body 1o uses the coordinate data sent from the tablet 12 to recognize two characters or to recognize figures. CRjEC1 performs character recognition processing in
03 works and the figure g! In Ill2, pink detection part PICK 102, figure gAsPREQ 104
, Proximity jij calculation unit DIsT 105. A coordinate value calculation unit LOC106 and an end point/contact calculation unit TREQ 107 that calculate contact points and contact points operate. Coordinate value input section IN100 other than these, stroke end detection section 5DET1
01, Graphic memory MEMORY 108, CRT
(Z) Display control 5DsP that performs fi display control 109
, a block control unit PLO that controls output to the block.
T110 is a part that operates in common with character recognition and figure W judgment tat.

The action of the present invention (2) will be described with reference to an input example of the figure shown in Fig. 3 C2.
In this example, a straight line L5 connecting the intersection point 3 of straight lines L3 and L4 is input.

Conventional technology: First, in order to specify the point of intersection between the two taka lines (enter the command from the keyboard to specify the intersection point in Figure 7), then (by moving the stylus pen on the two-tablet), Directly point RL1 and L2 with the cursor (F3 in Fig. 7 is called big).Similarly, point B
%Above operation (determined by 2. The startled figure is a CRT
Ibaraki is highlighted (F4 in Figure 7).

Next, a direct input command 1 is input from the keyboard (Fl in FIG. 7), and a subcommand indicating that the input specifies the start and end points is input from the keyboard (F2 in FIG. 7). To specify the starting point and ending point, move the cursor and align the above two points A and Bl (FIG. 7, 0F3).

If the above operation is a photon, the straight line L5 you want to input is CRT
(F4 in figure j87).

-1 In the present invention, the stylus pen 13 is moved on the tablet 12 and the displayed cursor is moved to the vicinity of point A (same as when the stylus pen 13 is moved on the tablet 12 and the cursor is moved to the vicinity of point A) WJ is disgusting. When you upload it on the PC, the clean-cut straight line L5 is displayed on the CRT 11. In this way, there is no need to enter commands or check the C2 control device C2. When you perform this operation, The operation of the present invention will be described with reference to FIG.

PREQ 104, DIS'l' It)
5 Hello. This first shift is simultaneously transmitted to the CRT 11 via the DsP 109 and displayed as a handwritten figure.

It is S DET10 that the pen is down at point A and V starts.
1 and sends a signal to PREQ 104 and DIST 105 to start their respective operations. DIST 1
05 accesses the MEMORY 108 in which other graphic data is stored (straight lines L1 to L4 of the two-input street) and calculates the coordinates (i The distance is calculated and the figure data whose distance is less than the preset threshold (in this example, L
l, L2) and distance fimm woTREQ 107 heiru. PREQ104 hash stylus pen 13 coordinate value lN
100 to calculate the stroke vector of the handwritten figure.

When the stylus pen 13 is raised near point B,
5DET 101 detects that writing has finished and writes this? −
Notify DIST 105 and PREQ 104. DIST 105 finishes pen-up (2). TREQ 107 starts drawing from the coordinates close to the end point of straight line Ll or L2 from the graphic data and distance sent from DIST 105, and Knowing that you have finished writing at nearby coordinates, set the coordinate values of the start and end of writing to points A and B and LOC106.
send to

The PREt4104 recognizes the shape of the input figure from the calculation result of the stroke vector. In this example, it is a straight line and gw&.

A code representing the graphic format of the gR result is sent to LOG 106. LOC106 is a straight line whose start and end points are the two coordinate values from the coordinate values of points A and Bo. It is determined that This data is stored in the MEMORY 108 (2) and sent to the CRT 11 via the DSP 109, erasing the handwritten figure that had been shown until then and displaying the clean-cut figure.

FIG. 3(b) shows two straight lines L6. L7 (This is an example of inputting a circle with a bi-tangent radius value of 100.Similar to straight line input; Move the stylus pen 13 to handwrite a circle close to straight line L6.L7.Where is the starting position? It doesn't matter.The radius value is entered in the same way as using the stylus pen 13.
is an identifying character that allows numbers to be divided by radius. Character input and graphic input may be done in the reverse order. Straight line L6.Similar to straight line input. L? There is no need to pick a number, and there is no need to enter numbers from the keyboard.

The operation of the present invention when this operation is performed will be described with reference to FIG. 1 as in the case of linear input. PREQ104 the coordinates of the stylus pen 13 entered by pressing IN 100.
, DIST 105 HeLj. DSP 109
t=intervention1. Displaying the hand-drawn figure on the CRT 114 is the same as the example of linear input. PREQ 104 calculates the stroke vector during pen down and DIST 1
05 calculates the distance to MEMORY 108 (2) and the already inputted figure data stored in C2, and sends this result to TREQ 10?. LOC1
Send to 06. CREQ 103 determines strokes from the coordinate values of stylus pen 13 and performs character recognition. The character recognition magic itself is a public example (Nikkei Collectronics 198
3, 12, 5, PP115-133), etc. Character recognition (When a two-part character string R100 is obtained, it recognizes that the character R, this character, and C2 is the radius value, and sends the radius value 100 to the LOC 106.LO
C10 (3 is the straight line L sent from TREQ 107
6. Since the data of L7, the radius value 100 sent from CREQ 104, and the figure code sent from PREQ 104 are circles, straight line L6. Find a point E1 at a distance of 100 from L7, that is, the center point.

This result is sent to the CRT 11 via the DSP 109 to the straight line L6. A circle that is in contact with L7 and has a radius of 100 is cleaned and fitted. This coordinate value is stored in MEMORY 108. The numerical input in this example is the radius of the circle, but other numbers 1
The diameter of a circle or an arc, the coordinate value in a direct coordinate system or a circumferential coordinate system, the length of a straight line, the distance from the base #i gland, etc. are possible.

Next (2) The present invention (2-based priority control method (2) will be described in detail.

! IP14 figure ta) has already been input (two figures are close to each other (-), the part to identify is the rotation part, and the tft is i#4
This is an example of tangent input when there is a risk of recognition. At this time, perform the big operation of the shape in the same way as in actual flow with Jubei Soshin. First, move the stylus pen 13 on the circumference of the cursor circle C2. The hand-drawn figure screen Ik starts from a nearby position that is the tangential MA coordinate of the circle C2, and ends at the close alignment that is the tangential coordinate of the circle C4.The command ``tangent of a circle'' in the conventional device C2 is a labor cost. The operation of the present invention when this operation is performed will be described with reference to Fig. 1.The pen down and pen up at point F is 5DET 10.
1 is detected, DIST105 is Ii'J 100'&
Input the coordinate values of the stylus pen 13 and select the MEMO (2 input adjacent circles 01 to C4 where other shapes are stored).
RY 108 is accessed to calculate the distance between point F and these figures, and the results are sent to TREQ 107. P
The ICK102 receives the pen down and pen up on and off signals from the 5DIT 101, and since the shift in the coordinate values of the stylus pen 13 input from the IN100 is slight, it determines that this is a big operation and TREQ 1
Send to 07.

THE, Q 107 performs these operations jj) gwt that it picked PlG2. Furthermore (if you perform pen down and pen up operations at two points G, the same operation as above will be performed.

Next (2 Start from near the tangent coordinate of circle C2, circle C4
PREQ 104 until it finishes writing near the circumscribed seated image of
f) The operation of the IST 105 is almost the same as the linear input example shown in the embodiment of FIG. 3+al.

The difference is that the pick operation is being performed on circles C2 and C4 (:), so TREQ 107 only inputs the data of circles C2 and C4 from among the proximal figures C1 to C4 sent from DIST 105 to LOC 106. be.

LOG=IQ6 is... The figure code sent from PREQ 104 is a straight line 64), the coordinates of the two tangent points are calculated from the data of circles C2 and C4 sent from TREQ 107, and a straight line is created using these as the starting and ending points. It is determined that

Fig. 4 (bj is the output when it is determined that TRQ 107 is close to each other when straight lines L8 to Lll and m gauge points Pi and P2 are located as proximate figures.TREQ 1
07 starts writing at LB, end of L9 or coordinate point P1.
The end of honor is a straight line f, 10. The coordinate values of the end TA of Lll or the coordinate point P2 are sent to the LOC 106. LOG 106
Select the coordinate point Pl with the highest priority as the proximate figure from among the three candidates of the line L8, L9 and the coordinate point Pi.
Select the priority coordinate point P2.

The data with these two selected coordinate values as the start point and end point are stored in the MEMORY 108. +:D S
To P2O37: Send to CRT 11 via.

s4 diagram tcJ is near the passing point of the handwritten trajectory (2 coordinate point P3
This is an example when there is. The operation of the LOC 106 that determines the starting point to be the end of L13 is the same as that described in the embodiment shown in FIG. The straight line L14 that is close to the 9th coordinate of the end of the handwritten trajectory is neither an end nor a neighborhood, so it is located near the passing point of the handwritten trajectory with the second priority (two coordinate points P3).
Select and generate straight line data passing through it. The end point is calligraphy@
End coordinate (; Intersection with adjacent straight line L14.

Figure 4 tdl is an example of inputting a straight line (two parallel lines with a distance of 100 degrees) using the straight line L18 as a reference. As shown in the example of Figure 3 tb for character input, CREQ1
03 sends data indicating that the distance from the input character string d 100 to the reference line is 100 to the LOG 106. T.R.
EQ 107 has P4, C5, Li2 as proximate figures.
．． Send Li2 to LOC106. Straight line L1 with 4 tables
8 is recognized by TREQ 107 in the same way as the big operation shown in the embodiment of FIG. 4 p), so this graphic data is also sent to LOG 106.

LOC106 is PREQ 11) 4 wh et a; ey eve bs straight line, distance 4100 from CREC103, TREQ
From these data, pick straight line L18 from 107, a straight line m Li2 (two parallel lines and a distance of 100 (two lines) is generated. In this example, the distance data from C:lC103 is set to 4 points, and the input figure is Coordinate data is generated near the passing point of one handwritten trajectory (the two coordinate points P4 have the second priority, and the circle C5 has the third priority. The starting point and the ending point are the proximity figure L16.
Let Li2 be the glue point.

Next≦; Different embodiments of priority control will be described with reference to FIG. Figure 5 + al starts writing in straight line input (two straight lines L20. written @ January - straight line L21, circle C near the passing point)
6, C7 exist close to each other, and the figures C6, C7 near the passing point
(This is an example of recognition based on two things.

The beginning of handwriting trajectory and 11F'! ! Since the ends of the straight lines L20, 1, and 21 are located close to the terminal seat m+2, there is a possibility that they will be connected to the Ill input with these as the starting and ending points. While inputting figures with hand 11F, the operator raises the sty 2 pen 13, then brings the pen down again and presses the hand W.
If you continue to input the @ figure, it is assumed that you have performed a big operation on this position OA+=. In the example of 51st voice), the vicinity of the circumference of each of circles C6 and C7 is A4. When A5 is used for pen amp and pen down, these figures are considered to have been picked.

This example! ! This will be explained with reference to Figure 41. The operation by which the 5DET 101 detects that the pen has been brought down and started to be destroyed by A3 is the same as the embodiment described above.
'＠When the pen 13 was moved down again at the figure input midpoint A4, PICK 102 performed the same operation as BIC because the coordinate value when the pen was up and the m reference value when the pen was down were slightly greater. It also judges it as C and sends this information to TREQ 107. At this time, DIST
105 is 107 to THE that the proximate figure is circle C6
send to The same operation is performed at point A5.

TREQ 107 is the proximity figure L20. L21. C6
, C7 data to LOC106. For C6 and C7, data indicating that a big operation has been added is added.

LOC 106 selects C6.C6 with high-priority big operation from among the proximity figure data sent from TgEQ 107. Select C7 and generate these tangents.

Figure 5 (bl is an example of inputting two circles (two tangent circles) as in the example of Figure 3 (b). Figure 5 (b) t:
The shape that touches the cage is LZ3. L24, and L25
．． L26 and (there is a possibility of misrecognition as they are close to each other. In this case, like the real M Liu in Fig. 5 <a>), I want them to touch.

Neighborhood of figure A7. Repeat "pen up and pen down"/wo on A8.

The difference from the embodiment of the third S (bl) is that the ILOc 106 in FIG.

[Effects of the Invention] According to the graphic input device according to the present invention, it is possible to input handwritten characters online (2), thereby eliminating the need for a keyboard, and to recognize the graphic input by online handwriting. Since the proximity of two inputted figures is calculated, the input speed and operability of figures can be dramatically increased compared to conventional devices.

[Brief explanation of drawings]

Figure 1 is a detailed block diagram of the main body part of the uninvented graphic input device, and Figure #2 is the configuration of the graphic input VC according to the present invention ζ2, which connects the main body part and the input/output part. figure,
Figures 3 to 45 are diagrams showing display examples of figures input to the figure input device of the present invention;
The figure is a 7ct-chart of graphic input operations using the apparatus of FIG. l...CAI) system processing device, 2...
CRT. 3...Keyboard, 4...Tablet, 5
...Plotter, Process 0...Graphic input device body, 11...C1 (T, 12...
Tablet, 13...Stylus 2 pen, 14...Plotter, 100...Coordinate value input section, 101...
- Stroke end detection section, 102... Bick detection section, 1
o3...Character recognition unit, 104...Graphic recognition unit,
105...Proximity calculation unit, 106°"-Coordinate value calculation unit, 107...End point, contact calculation unit, 108...
・Graphic memory, 109... reduction control unit, 11
0... Plotter control unit. (7317) Agent Patent Attorney Nori Chika n Yu (
(1 other person) Figure 1 Figure 2 Figure 5 Figure 6 Figure 7

Claims (2)

[Claims] (1) A graphic input device that inputs handwritten figures, etc. from a tablet, including a first means for reading the first coordinate values of the figures, etc. written on the tablet; a second means for determining the shape of the input figure from the first coordinate values, and a second means for reading inputted figure information already stored in a memory and calculating the first coordinate values to approximate the input figure. a third means for determining a figure;
when a handwritten character is input, a fourth means for determining what the handwritten character is based on the first coordinate value and converting it into coordinate data of an input figure; a fifth means for determining the second coordinate value of the input figure by giving priority to the adjacent figures, and storing the contents determined by each of these means in the memory and the faired figure. A graphic input device comprising: sixth means for displaying. (2) When the fifth means detects pen-up and pen-down movements of a stylus pen in the vicinity of a figure that has already been input and is being displayed for cleanup while inputting a figure by hand from the tablet, The graphic input device according to claim 1, wherein a graphic is determined to be a proximate graphic with the highest priority among the proximate graphics.