JPS6361713B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an XY coordinate reading device, and more particularly to an interactive coordinate reading device.

Conventionally, coordinate reading devices have been used that use a cursor linked to the worker's hand to read graphical information on a drawing (manuscript) placed on the reading table of the coordinate reading device. In many cases, when the figure on the document is roughly drawn, or the accuracy of indicating the coordinates of the drawing line on the document using the cursor is not sufficient, the device may need to make some kind of correction to the read value. must be carried out. This correction is by no means possible through simple calculation processing, but involves a kind of figure recognition process for the original figure, and it is extremely inefficient in terms of calculation time and other problems to completely perform this correction using a computer.

On the other hand, an effective method for this purpose is to perform the recognition part of the original figure using the operator's judgment.
One method is to use a graphic display and allow the operator to proceed with the reading process while visually checking the reading results as figures displayed on the graphic display, but this method requires complicated control of the graphic display. Because it requires real-time compilation processing when reading coordinates, it can only be used in very large-scale systems, such as various CAD systems, that combine a computer capable of high-speed calculations and an expensive graphic display. is the current situation.

The present invention has been made to improve the above-mentioned drawbacks, and by providing a slave coordinate display device in addition to a principal coordinate display device, workers can easily and fully utilize their own judgment in an interactive manner. The present invention relates to a coordinate reading device that enables reading.

The present invention will be explained in detail with reference to one example below.

In FIG. 1, the coordinate reading device 10 includes a reading table 11 on which a document 1 to be read is placed, a cursor 13 for indicating the reading position, a keyboard 12 for inputting various functions, a coordinate analysis device 15, and A coordinate display device 16 connected to the coordinate analysis device 15 for displaying principal coordinate values, and a coordinate display device 16 connected to the coordinate analysis device 15 for displaying principal coordinate values; Conversion device 17, the coordinate conversion device 1
The coordinate analyzer 15, the coordinate converter 17, and the signals from the keyboard 12 are connected to an output terminal 20.

Here, the coordinate analysis device 15 uses the reading table 11
This is a device that extracts the position of the cursor 13 on the screen as an XY coordinate value. For example, if the relationship between the cursor 13 and the reading table 11 is a mechanical type connected by a wire, a sonic type, or a magnetic coupling type, the This is a well-known device that extracts XY coordinate values.

The principal coordinate display device 16 constantly displays the XY coordinate values of the cursor using a 7-segment LED display.

The coordinate conversion device 17 mainly has means for performing coordinate rotation processing and means for performing grid processing, and is configured to operate according to the flowchart shown in FIG. That is, the output X and Y values of the coordinate analysis device 15 are stored at 2a. Next, in step 2b, the coordinate rotation process of step 2c is performed only when the rotation key included in the keyboard 12 is ON. That is, the following processing is performed: X'=(X-Xo) cosα+(Y-Yo) sinα Y'=(Y-Yo) cos α-(X-Xo) sin

Here, the values of Xo, Yo, and rotation angle α are the values of X, Y at that time during the first loop of coordinate rotation processing.
This is the value entered from the keyboard and stored.

Next, in step 2d, the grid processing in step 2e is performed only when the grid key included in the keyboard 20 is ON. That is, the following processing is performed: X'=RND(X/G)*G Y'=RND(Y/G)*G. (RND is a rounding function.) Here, the grid interval G value is the first value of grid processing.
This is the value entered from the keyboard and stored during the loop.

Next, the subordinate coordinate value processed in this way is outputted to the subordinate coordinate display device 18 at 2f, and the process returns to step 2a, and the same loop processing is performed thereafter.

The subordinate coordinate display device 18 is the main coordinate display device 16.
It has a similar configuration.

Here, the operation of the device of the present invention will be explained. For example, the three rectangles A, B, and C written in manuscript 1 are figures that should be read as a group of rectangles with a height of 1 cm, a width of cm, and an interval of 1 cm, arranged side by side on a straight line inclined at 30 degrees with respect to the principal coordinate X axis. However, it is assumed that the figures on document 1 are roughly drawn.

In such cases, it is extremely difficult to perform accurate reading using conventional devices.

In such a case, point P from the keyboard 12
When a command to perform a rotation process of 30 degrees around (Xo, Yo) (that is, a command to convert to slave coordinates (X'Y')) is given to the coordinate conversion device 17, the slave coordinate display device 18 The principal coordinates (XY) are converted to minor coordinates (X'Y') and displayed, so when reading the bottom or top vertex positions of each rectangle A, B, and C, move the cursor.
If you move it in the X' direction, only X' will change in the subordinate coordinate display value, so if you read it while looking at the displayed value on the subordinate coordinate display device 18, for example, if the length of a rectangle is indicated on the document, Even if the cursor is diagonal, it is possible to move the cursor accordingly, making reading very easy and accurate.

Furthermore, in the case of grid processing (i.e., grid processing with Gcm spacing), a grid with Gcm spacing in the X, Y (or By adding the value (aligned to the original value), even rougher originals can be read more easily and faithfully to the original intent.

That is, in the case of this embodiment, by performing 1 cm grid processing, even if the point indicated by the cursor has some error, that is, deviates from the point indicated by 2 to 3 mm, the output value of the coordinate conversion device 17 will be accurate in units of 1 cm. Since the data are aligned and displayed on the slave coordinate display device, the operator can read the data roughly by checking the display without worrying about errors caused by inaccuracies in the original shape or camera shake of the cursor. Efficient reading work becomes possible.

Since the present invention has the above-described configuration, even when the figure to be read is tilted with respect to the principal coordinates that are the reference coordinate system when reading the position from various manuscripts, it is possible to read the manuscript easily and faithfully to the original intention. The effect is particularly remarkable if a manuscript is used in which the operator can understand the distance value even if the figure itself is roughly drawn on the manuscript.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a block diagram of the apparatus of the present invention, and FIG. 2 is a flowchart showing the operation of the coordinate conversion apparatus. 1... Original, 10... Coordinate reading device, 11...
Reading table, 12...Keyboard, 13...Cursor, 15...Coordinate analysis device, 16...Primary coordinate display device, 17...Coordinate conversion device, 18...Subordinate coordinate display device, 20...Output terminal.

Claims (1)

[Claims] 1. A reading table for performing coordinate reading, a cursor that indicates the position on the document placed on the reading table, and a position indicated by the cursor.
means for obtaining XY coordinates; a principal coordinate display device for displaying the XY coordinate values; a means for inputting a coordinate rotation angle and an origin coordinate value; A coordinate reading device comprising: coordinate conversion means for performing coordinate rotation processing on XY coordinate values indicating a position indicated by the cursor to obtain subordinate coordinate values; and a subordinate coordinate display device for displaying the subordinate coordinate values.