JPS6258013B2 - - 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.

As shown in Figure 1, the position of each figure is represented by four line segments l ₁ , l ₂ , l connecting points A, B, C, and D at the four corners of the original, as typified by the draft manuscript used for printing. ₃ , _l4
(In the case of a draft manuscript, this corresponds to a finishing line) A rough manuscript OS is presented, and the positional coordinates of each figure must be accurately read based on such a manuscript.

In conventional coordinate reading devices, the point A at the lower left corner of the coordinate system is usually regarded as the origin, and the coordinates of each figure are read based on this point. For example, when reading the position of a circle indicated by a figure Q, although the figure Q itself is roughly drawn, the position of the figure Q is between four line segments l ₁ , l ₂ , l ₃ , and l ₄ . Since it is expressed as an exact distance from l ₂ and l ₃ , the distance from point A to figure Q is calculated from this distance (usually with numerical values attached), the radius of the circle, and the vertical and horizontal dimensions of the manuscript. , that is, the coordinates of the figure Q when point A is the origin, are calculated separately, the cursor is moved to these coordinates, and the input button is operated at that point to input the coordinates. However, in this case, the premise is that interactive input is performed, in which figures in a rough document are not digitized in their rough form, but are corrected to accurate positions using human judgment.

The same applies to figures P and R, and in order to input the position coordinates of each figure, it is necessary to separately calculate the distance from point A to each figure in advance.

In this way, conventionally known coordinate reading devices can only read the coordinates of each figure as position data from one point (in this case, point A). The data that can be entered is calculated separately based on the position data of It will be entered.

Therefore, the purpose of this invention is to
To provide a device which can easily and accurately read the coordinates of a figure whose position is indicated by the distance from a line segment connecting four corner points of a document as shown in the figure.

That is, according to the present invention, it is possible to selectively set the four corner points A, B, C, and D of the original shown in _{FIG .} The X and Y axes are set with the direction of the arrow as positive, and such a selectable coordinate system (display coordinate system)
By displaying the coordinates at on the display device,
The operator can input the coordinates by interactively using the numerical values indicating the position of the figure drawn on the manuscript OS, and the input coordinates undergo coordinate transformation, and a specific point is set as the origin as before. It is converted into coordinates in the coordinate system (output coordinate system) and output.

Hereinafter, the present invention will be explained in detail based on embodiments of the drawings.

FIG. 2 is an explanatory diagram of the apparatus according to the present invention. Reference numeral 5 denotes a coordinate reading table, which has a coordinate system (hereinafter referred to as the machine coordinate system) uv (hereinafter referred to as the machine coordinate system) unique to the device, and coordinates are read using the coordinates in this machine coordinate system. It is done. A cursor 6 is paired with the reading table 5 and indicates a point whose coordinates are to be read.

The basic configuration for reading the coordinates of the reading table 5 and the cursor 6 can be of a conventionally known configuration. For example, the reading table 5 may have lines of magnetic force arranged in a mesh shape under the document placement surface. However, the cursor 6 may be one that generates magnetic energy capable of magnetically influencing the lines of magnetic force; however, the present invention is not limited to this type.

This coordinate reading table 5 is connected to the data bus DB through the coordinate reading controller 4.

The keyboard 20 includes a numeric keypad, various function keys, and coordinate reading keys used to input the dimensions of the line segments l ₂ (=l ₄ ) and l ₁ (=l ₃ ) along the four sides of the document shown in FIG. It consists of instruction keys, end keys, etc., and is connected to the data bus DB via the keyboard controller 21.

Reference numeral 1 denotes a CPU, which according to the program stored in the ROM 3 calculates and controls data input from the reading table 5 or the keyboard 6, outputs the calculation results to a floppy disk (to be described later), and outputs the calculation results to a floppy disk (to be described later). to be displayed. 2 stores input data or calculation results, etc.
This is a RAM, and 3 is a ROM in which the program is stored as described above.

10 is an address decoder and an address bus
It decodes the contents of AB and outputs a signal specifying which peripheral device to select from among the peripheral devices including various registers described later.

11a is a horizontal dimension register that stores the dimension SZx of the horizontal line segment l ₂ (=l ₄ ) among the line segments along the four sides of the original OS, and 11b is the vertical dimension register l ₁
This is a vertical dimension register in which the dimension SZy of (=l ₃ ) is stored.

In addition, 12 is the point A, B, C at the four corners of the manuscript OS,
This is a display origin number register in which numbers corresponding to points A, B, C, and D are stored to select and determine which of D should be the origin of the display coordinate system.

Reference numeral 13a denotes a horizontal display origin coordinate register in which the horizontal value u' of the coordinates (u', v') of any of the four corners of the document in the machine coordinate system taken in from the reading table 5 is stored. 13b is a vertical display origin coordinate register in which the vertical value v' is also stored.

14a is the coordinate (in the machine coordinate system) of the output origin (point A in this embodiment) obtained by considering the above-mentioned SZx and SZy based on the coordinates of the display origin in the machine coordinate system stored in the registers 13a and 13b. 14b is the horizontal output origin coordinate register where the horizontal value uo of uo, vo) is stored, and 14b is the vertical value
This is a vertical output origin coordinate register where vo is stored.

15a is a horizontal current position mechanical coordinate register that stores the horizontal value u ₁ of the coordinates (u ₁ , v ₁ ) of the mechanical coordinate system of the point where the cursor 6 is currently located, and 15b is the machine coordinate register for the vertical direction. This is a vertical current position mechanical coordinate register that stores the value v ₁ of .

Further, 16a is a horizontal current position output coordinate register that stores the horizontal value x ₁ of the coordinates (x ₁ , y ₁ ) of the output coordinate system of the point where the cursor 6 is currently located, and 16b is the same This is a vertical current position output coordinate register that stores the vertical value _y1 .

Each such register is connected to an address decoder 10.
It is connected to the data bus DB so that data can be input and output. Furthermore, read/write signals are supplied from the CPU to each register via a read/write controller 22 to control data input/output.

19a is a horizontal display coordinate register that stores the vertical value _X1 of the coordinates ( _X1 , _Y1 ) to be displayed on the display device 18, and 19b is a vertical display coordinate register that stores the vertical value _Y1 . This is a display coordinate register.

Display coordinate registers 16a and 16b are data buses
It is connected to the DB, data transfer with the CPU is controlled by a read/write signal R/W, and its contents are displayed on the display device 18 through the display controller 17.

As the display device 18, an LED display, a liquid crystal display, a CRT display, etc. can be appropriately selected and used.

Furthermore, a floppy disk drive 8 is connected to the data bus DB via a floppy disk drive controller 7, and the calculation results by the CPU 1 are written to the floppy disk 9.
This floppy disk 9 is used as data in a subsequent process, for example, drawing work using a drawing device.

The device according to the present invention has the above-mentioned configuration, and its operation will be explained below in FIGS. 1 and 3.
This will be explained based on FIG.

As shown in FIG. 3, first, the keyboard 20
Input the values of the dimensions SZx and SZy of the line segments l ₂ and l ₁ connecting the four corner points A, B, C, and D of the original OS (step
21), and store these values in the registers 11a and 11b, respectively (step 22). Next, in order to select a display coordinate system, a point that should be the origin of that coordinate system is selected. In the example shown in Figure 1, point A, point B,
There may be cases where point C and point D are selected as the origin.
For example, if you want to input coordinates for figure Q, you can select point C as the display origin, point B for figure P, point D for figure R as the display origin, and input that number from the keyboard 20 (step
twenty three). This display origin number is stored in the register 12 (step 24). Next, the cursor 6 is placed on one of the display origins A, B, C, and D on the selected document, and the coordinates of that point are input by operating the input keys. (Step 25) These coordinates are in the mechanical coordinate system uv specific to the reading table 5, and the values are set as (u'o, v'o) and the respective values are stored in the registers 13a and 13b. Step 26). Once the coordinates of the display origin (u′o, v′o) are input,
The display origin number is determined from the display origin number that has already been input and stored in the register 12 (step 27), and the output origin coordinates in the machine coordinate system are determined from the display origin coordinates (u'o, v'o). (uo, vo)
(Step 27). Although the output origin may basically be set at any point, a case will be explained in which the origin is set at point A in the lower left corner, which is usually the origin. Dimensions SZy, SZx from registers 11a and 11b
is read and if point A is selected as the display origin, since they are the same point, uo = uo', v = vo' are executed (step 28), and in the case of point B, uo = uo', vo = vo. ′−
If SZy is (step 29) and point C, uo=uo′−
If SZx, vo = vo' - SZy is point C (step 30), uo = uo' - SZx, vo = vo is executed (step 31), and the machine coordinate system from the display origin to the output origin in each case is The coordinates (uo, vo) at can be found. Once the coordinates of the origin of the output coordinate system in the machine coordinate system have been determined, the values are stored in register 1.
6a and 16b (step 32).

After this, in step 33, task 2 is activated. Regarding task 2, as shown in FIG. 4, the coordinates of the current position of the cursor 6 on the reading table 5 are taken in (step 41). These coordinate values (u ₁ , v ₁ ) are values in the mechanical coordinate system uv specific to the reading table 5, and these values are temporarily stored in the registers 14a and 14b (step
42). Since the coordinates (uo, vo) of the origin of the output coordinate system in the machine coordinate system have already been found, the coordinates in the machine coordinate system where the cursor is currently located, found in step 41, are used as the coordinates (x ₁ , _y1 )
Convert to The conversion formula can be expressed as x ₁ =u ₁ −uo, y ₁ −v ₁ −vo. (Step 43). The coordinates (x ₁ , y ₁ ) of this output coordinate system are temporarily stored in registers 15a and 15.
b (Step 44) Next, based on the display origin number (Step 45), the coordinates (x ₁ , y ₁ ) in the output coordinate system x-y that are being sought are converted to the coordinates ( X ₁ , Y ₁ ). If the origin of the display coordinate system is point A, it is the same as the origin of the output coordinate system, so the coordinates in the display coordinate system are found with X=x and Y=y (step 47), and if point B, With the conversion formula X=x, Y=SZy-y (step 48), if point C, then X=SZx-x, Y=
Using the conversion formula SZy-y (Step 49), if point D, use the conversion formula X=SZx-x, Y=y (Step 50) Display coordinates with each point A, B, C, D as the origin The coordinates (X ₁ , Y ₁ ) of the point where the cursor is currently located in the system can be determined.

The coordinates (X ₁ , Y ₁ ) of the display coordinate system obtained in this way are written to the registers 19a and 19b (step 51), and when this step is executed, the process returns to the start and steps 41 and subsequent steps are repeatedly executed. Ru.

This repetition is extremely fast compared to the speed at which a human moves the cursor by hand, so a worker who uses the point where the cursor is currently located as the origin at any of points A, B, C, or D It can be expressed sequentially by the coordinates of the coordinate system for .

In other words, it is expressed as the distance in the horizontal and vertical directions from any of points A, B, C, or D. For example, in the case of figure P, if you specify point B as the display origin, the cursor will be located. The point B is the origin,
In order to display the coordinates on the display device 18 in a coordinate system with _l2 as the X axis and _l1 as the Y axis, the cursor 6 must be positioned at the point where the display on the display device 18 becomes (20, 30). This means that the position corresponds to the upper left corner point of the figure P. For figures Q and R, if you specify point C and point D as the display origin, the position displayed as (35, 30) on the display device 18 will be the position displayed as the center of the circle (20, 10). The cursor 6 is positioned at the lower right corner point.

At this point, task 1 determines whether the coordinate reading work is finished (step 34), and if it is finished, task 2 is ended (step 37), and the reading work is ended. On the other hand, if the coordinate reading operation is to be continued, it is determined in step 35 whether or not the coordinate reading instruction key has been pressed, and if it has been pressed, the current cursor 6 determined in step 43 of task 2 is The located coordinates (x ₁ , y ₁ ) of the output coordinate system are read out from the registers 15a and 15b, and output and recorded on the floppy disk 9.
(Step 36) Therefore, the read and output coordinate data can be output as coordinates in an output coordinate system different from the display contents of the display device 18.

If the coordinate input key is not pressed or after the coordinates have been output, the process returns to step 34, and the setting is such that it is always possible to complete the work and output the coordinates.

Further, task 1 and task 2 are processed using a multi-task method, but since this is already known, a description thereof will be omitted.

Through data processing according to the program as described above, the coordinates of the point on the document indicated by the cursor 6 are converted into coordinates in the display coordinate system and displayed on the display device.
Additionally, the coordinates of the point at which the coordinate reading key is pressed in the output coordinate system can be read and output.

Note that the above description is merely one embodiment of the present invention, and the present invention is not limited to this embodiment in any way.

For example, a floppy disk is used as an output device, and the output data is recorded on the floppy disk and used in the subsequent process, but other recording devices may be used, and the output data may be The data may be drawn by directly inputting it to a drawing device.

Also, set the origin of the output coordinate system to points A, B, and
Although the case where one of the four points C and D is used has been described, other points such as the center point of the document can also be used as the origin of the display coordinate system using a similar concept. However, if the center point of the document is used as the display origin, it is necessary to provide 1/2SZx and 1/2SZy instead of the document sizes SZx and SZy.

As described in detail above, according to the present invention, the position of a figure other than a specific point, such as a printing draft manuscript in which the position of a figure is indicated by the distance from the finishing line along the four sides of the manuscript, can be For a rough document in which the position of a figure is expressed from As before, the data can be output as coordinates with a specific point as the origin, but it is necessary to separately calculate the distance from a specific point by hand calculation, etc., and read the coordinates based on that distance. This makes the coordinate reading work very simple and accurate.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention,
FIG. 1 is an explanatory diagram showing a state in which a document is placed on a reading table, FIG. 2 is a block diagram of the point signal processing system of the present invention, FIG. 3 is a flowchart of task 1, and FIG. This is a flowchart of Task 2. 1...cpu, 2...RAM, 3...ROM, 5...
...reading table, 6...cursor, 20...keyboard, 18...display device, 19...floppy disk.

Claims (1)

[Scope of Claims] 1. A reading table for reading coordinates, a cursor for indicating a point to be read on a document placed on the reading table, a keyboard including a numeric keypad and a coordinate reading instruction key; Points at the four corners of the document that can be arbitrarily selected from the coordinates of any of the four corner points of the document in a mechanical coordinate system specific to the reading table and the length of the line segment connecting the four corner points of the document entered from the numeric keypad. means for generating an output coordinate system having one of the origin points as the origin, and calculating the coordinates of the point where the cursor is currently located in the mechanical coordinate system and the coordinates of the origin of the output coordinate system in the mechanical coordinate system. means for determining the coordinates of the current position of the cursor in the output coordinate system; and a means for determining the coordinates of the current position of the cursor in the output coordinate system and the length of the line segment. means for determining the coordinates of the current position of the cursor in a display coordinate system for interaction; a display device that sequentially displays the coordinates of the current position of the cursor in the display coordinate system; A coordinate reading device comprising means for outputting by operating a coordinate reading instruction key. 2. The coordinate reading device according to claim 1, wherein the original is a printing draft original, and the line segment is a finishing line.