JPS58214975A - Coordinate reading device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coordinate reading device, and particularly to a coordinate a reading device suitable for reading minute point coordinates.

In the development of computers, etc., one of the important techniques is the design of printed circuit board turns, and for this purpose, a coordinate reading device is used to import the coordinate positions on the drawing into the computer, etc.

By the way, in the conventional type of this device, in order to read the coordinates of minute points on a grid preset on the drawing, it was necessary to precisely align the reading cursor with the coordinates on the drawing. Therefore, in order to accurately read a large number of coordinates, it required skill in operating the cursor and a large amount of manpower. For this reason, when reading the coordinates on a drawing, there were many misreadings, the reliability of the output data was low, and the number of man-hours required to correct the already read υ data was large.

In order to deal with this problem, various measures have been taken in the past, such as making the reading cursor smaller and lighter, improving the coordinate reading resolution of the device, and normalizing the reading coordinates, but there are no sufficient solutions. It was not. On the other hand, from the viewpoint of operability, the type of putter 7 and shape that connects the read coordinates is defined in advance.

A method has also been devised in which the reference coordinates are registered, the cursor is read, and the type is specified using a keyboard or the like, but this method also requires registering and selecting a large number of pattern shapes, resulting in frequent erroneous operations. Therefore, it is necessary to perform cursor operation and pattern designation by different people to strengthen checking, which also has the drawback of increasing the number of man-hours.

SUMMARY OF THE INVENTION An object of the present invention is to provide a coordinate reading device that eliminates the above-mentioned drawbacks of the prior art and can read a large number of coordinates on a drawing accurately and in a shorter time.

In the present invention, the X-Y coordinates on the drawing are represented by a main grid and a finer sub-grid expressed by relative coordinates from a point on the main grid, and the relative coordinates of the sub-grid points above are displayed with the reading cursor. When reading coordinates, align the reference point of the cursor with the main grid point near the target position, read the relative coordinates from there to the target position, and input them to the relative coordinate designation switch. , the coordinate calculation circuit accurately calculates the coordinates of the main grid on which the reference point of the cursor is placed from the output from the cursor and predetermined discrete main grid positions, and calculates the coordinates of the main grid on which the reference point of the cursor is placed, and calculates the coordinates of the main grid on which the reference point of the cursor is placed, and calculates the coordinates of the main grid on which the reference point of the cursor is placed, and calculates the coordinates of the main grid on which the reference point of the cursor is placed, and calculates the coordinates of the main grid on which the reference point of the cursor is placed, and calculates the coordinates of the main grid on which the reference point of the cursor is placed. The main feature is that it takes on the function of calculating the target coordinates from the output of the specified switch.

Hereinafter, details of the present invention will be explained in detail with reference to the drawings. Figure 1 shows an outline of the overall configuration of the coordinate reading device.
Reading table 1 with drawing 3, cursor 2. It consists of a control device 4 having a setting panel 49 and a data output device 15 such as a magnetic tape. The control device 4 takes in the cursor reading coordinates.

Performs normalization processing, output data format editing, output device control, etc. The data output from the output device i15 is generally delivered to a host computer (not shown) and is used for data checking, plotting, input data for another system, etc.

FIG. 2 is an external view showing an embodiment of the coordinate reading cursor 2 forming a part of the device of the present invention and an explanatory diagram of the coordinates on FIG. si! of the control device that performs the output processing! This is an example meeting.

The operations and device operations when reading an arbitrary coordinate t on the drawing according to this embodiment are as follows. First, there are the following three phases as an operation procedure.

Phase 1: Prior to the start of reading the coordinates on the drawing, the main grid reference coordinates (Xo
, Yo), the maximum coordinates (Xw, Yw), the number of grids on each axis (N, M), and the number of sub-grid divisions (in the example in Figure 2, both X and Y are (4, 4)) on the setting board. 49 and input it into the arithmetic circuit 47 as a constant.

Phase 2: Coordinate alignment of cursor 2 Mataro (reference point,
2) in the vicinity of the main grid near the target position on Drawing 3, and read the relative coordinates from that point visually at the target position and input them to the relative coordinate designation switch 7.8.

Phase 3: By pressing the coordinate reading designation switch 9, the control device 4 executes processing such as coordinate transformation based on the relative coordinates input in Phase 2 and each Aki constant defined in Phase 1.
The data is then transferred to the data output device 5.

By repeating the phases of the above operations, the coordinates of the required positions are read one after another. This operation will be explained by taking as an example the reading of point A on drawing 3 of FIG. 2. First, in phase l, parameters representing the main grid are set from setting board 49 to arithmetic circuit 47. This operation is similar to the conventional device, and its details will be omitted.

Next, in order to read point A, phase 2 operation is performed.

That is, align the coordinate alignment mataro of cursor 2 to the vicinity of the main grid (x * + y a ) closest to point A, then visually confirm that point A is on the sub-grid (2, 2), and move the cursor The switch X2 of the X coordinate setting switch 7 and the switch Y2 of the X coordinate setting switch 8 corresponding to the sub-lattice (2, 2) provided on 2 are pressed. Here, the sub-grid X and Y coordinate setting switches 7.8 are non-locking,
A signal is output only while the button is pressed. When the switch X2Th is pressed, the or gate 15 opens and the one-no-yacht multi 16 is triggered. Wano Shot Multi 16.
17 shall be triggered at the rising edge of the signal.

A pulse having a time width T is output to the output terminal Q of the one shot 16, and the coordinate storage registers 22 to 25 are reset.

- An inverted signal of the output from the Q terminal is outputted to the terminal of the one-shot 16 at time @T, and the one-shot 17 is triggered at the rising edge of the signal one hour later. A 1-hour pulse is also output to the output terminal Q of Wang John) 17,
It is given to AND gates 18-21.

Since the pulse width time T of one shot 16.17 is set to be smaller than the time during which the switch X2 is manually pressed, the AND gate 19 is opened by the signal from the switch do. Similarly, when switch Y2i of the Y coordinate setting switch 8 is pressed, the coordinate storage registers 37 to 40 are reset, and then the register 38 is set. The above mechanism is based on the setting switch 7.
．． When 8 is pressed again and again, the last input is set and read out.

- Force, main grid absolute coordinates gQ The coordinates of the position of the cursor alignment mark 6 are taken into the circuit 10 and stored in the main grid X, Y registers 11.12. Here, like the conventional device, the cursor 2 has a function of detecting where on the table 1 the position of this mark 6 is, and the position of Mataro is expressed by the coordinates that can be called absolute coordinates on the table 1. This is what is read. Each constant value of the main lattice on FIG. 3 in phase 1 is a constant that provides the relationship between the absolute coordinates and the main lattice coordinates.

Next, in phase 3, when the coordinate reading designation switch 9 is pressed, an activation interrupt is applied to the calculation circuit 47, a point address for reading the calculation coordinates is determined, and an instruction is issued to the timing decoder 46. It will be done. The timing decoder 46 outputs the signal TI-T4 to the Junkutani gate and causes the arithmetic circuit 47 to process the coordinates as follows.

First, when the signal MTI is output, the AND gate 13 is opened and the value of the X coordinate register 11 is taken into the arithmetic circuit 47. Subsequently, when the signal T2 is output, the AND gate 14 is opened and the value of the Y coordinate register 12 is taken into the calculation circuit TNj47.

No. 18'1'3 is A/D gate 26-29. and AND gates 41-45, and set one each of coordinate storage registers 22-25 and 37-40.
Read the fc value. In the example of point A in Figure 2,
27.42 opens and its value (sublattice X coordinate is ' 010
0'' and the Y coordinate is also 0100'') is taken into the arithmetic circuit 47. Furthermore, when the above data is taken in, the arithmetic circuit 4
7, the main grid coordinates (X, .

y,) and further calculate the coordinate storage registers 22 to 25°37.
The data from ~40 are encoded and summed to determine the coordinates of point A on Drawing 3.

When the coordinates of point A are determined using signal T3 in this way,
The signal T4 is output, the AND gate 48 goes to sleep, the data of the coordinate A is delivered to the output device 5, one process is completed in the signal T1 to T401 cycle, and the next coordinate setting waiting state (
Waiting for Phases 2 and 3 to be repeated).

As is clear from the above embodiments, according to the present invention, alignment on the main grid is easy and accurate, and only changes (relative coordinates) can be determined visually. C
Since the target position can be read with a simple operation of ``a'', it is possible to reduce the number of man-hours and reading time compared to the conventional method of reading by aligning the position once, and it also has the effect of improving reading sharing. . Furthermore, the reliability of the obtained data is improved and the number of man-hours required for its correction can be reduced.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of the overall configuration of the coordinate reading device, Fig. 2 is a diagram showing the external view of a coordinate reading cursor as a part of the device of the present invention and the relationship between the coordinates on the drawing, and Fig. 3 is a diagram showing the relationship between the coordinate reading cursor as a part of the device of the present invention and the coordinates on the drawing. FIG. 1 is a diagram showing an embodiment of the invention. 2... Cursor, 3... Reading drawing, 4... Control device, 6... Alignment mark, 7... Sub-grid X-coordinate setting switch, 8... Sub-grid X-coordinate setting switch, 4
7... Arithmetic circuit.

Claims (1)

[Scope of Claims] 1. A system that has the function of outputting a mark coordinate signal indicating the position of a mark for alignment and for inputting relative coordinates indicating a change from the main grid coordinate on the drawing. a cursor equipped with an input means, and the coordinate point read visually and input to the input means when the cursor is set so that its mark coincides with a coordinate point close to the target position on the main grid; 1. A coordinate reading device comprising: a control device having a function of calculating the target position from relative coordinates of the target position and a mark coordinate signal indicating the mark position. 2. The control device is configured to use the relative coordinate values input last to the input means when calculating the target position from the relative coordinates and the mark coordinate signal. Coordinate reading device according to scope 1.