JPS61112232A - Scope shift controller - Google Patents

Abstract

PURPOSE:To shift automatically the display position of a scop in response to a key signal with a conversational plotter using a CRT display device, by securing the correspondence between the display range set for the surface of a form to be processes (virtual) and a rectangular array of keys formed on a keyboard. CONSTITUTION:A keyboard 1, a display 2, an external disk memory 3, a ROM 3 and an RAM 5 are connected to a microprocessor via a bus 6. A ROM 4 stores a stable corresponding to the scope position and each of the ten keys 12 arrayed in a rectangular form on the keyboard 1 is set in response to each relative position on the surface of a form to be processed. When a special function of scope is executed, a control key 15 and then either one of the keys 12 are pushed. Thus a scope display range is shifted to a position on the surface of said form in response to the relative position occupied by the pushed keys within the rectangular array of the keys 12. Thus the scope can be shifted to a diagonal position on the form or in the oblique direction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a screen movement control device, and particularly to movement control of a display portion of a display device that displays a portion of a figure on a large sheet of paper to be processed.

[Background of the invention]

Generally, in an interactive drawing device using a CRT display device, the display screen cannot be made very large due to product cost and other considerations. Therefore, the display screen is usually small compared to the size of the figure on the paper (virtual) on which it is drawn. In contrast to a conventional text-based document, in a document that includes graphics, references are often made to distant locations on the paper.

Generally, the conventional method for moving the screen position on paper is a scroll function that moves the screen by a fixed distance in the vertical/horizontal direction, but it is not possible to quickly display other parts that are far away. There was a problem.

[Purpose of the invention]

As described above, it is an object of the present invention to make it possible to greatly move the display screen surface water level at on the paper surface to be processed with good man-machine operation and with a single touch.

[Summary of the invention]

In order to achieve the above object, the present invention focuses on the fact that the keys on the keyboard (encircled by the numeric keypad) are arranged in a rectangular shape, and makes the display range of the paper to be processed correspond to the rectangular key arrangement. The present invention is characterized in that it is provided with a control device that automatically moves the screen to a position on the surface of the paper to be processed that is similar to the water level of 1 ft in response to an input signal from a key.

[Embodiments of the invention]

The hardware configuration of the embodiment device is shown in FIG.

Keyboard 1, Display 2, External disk storage-R
Ili3, aoM4, l(AM5) are connected to the microprocessor 7 via a bus 6.

Of the panel configuration of the keyboard 1, the portion related to this embodiment is mainly shown in FIG. Character keys 11, d, numeric keypad 12 for inputting LFt, cursor key 13 for instructing cursor movement, and input key 14 for instructing the start of graphic input.
, an execution key 17 for instructing the end of the graphic input function, and a plot key 18 for instructing the t-pron every time in the graphic input function, an end key 22 for instructing the start of the special screen movement according to the present invention. There are control keys 15 and the like. When a key is pressed, the keyboard 1 sends the corresponding key code to the microprocessor 7 through a path 6.

A screen image of the display 2 is shown in FIG.

19 is the entire paper surface to be processed, 20 is a display range displayed on the display 2, and 21 is a cursor.

The cursor 21 can be moved freely when the cursor key 13 on the keyboard 1 is pressed.

The display 2 performs the following operations based on instructions from the microprocessor 7.

(1-i) Based on a cursor movement command from the microprocessor 7, the cursor position is moved a certain distance in the corresponding movement direction and displayed. The above cursor movement command is
The microprocessor 7 receives all the key codes indicating the depression of the cursor key 11 from the keyboard 1, and issues them to the display 2 based on the received key codes.

(l-11) Screen position on the paper to be processed (8 in Figure 3)
(represented by the coordinate value of the point on the paper to be processed) is received and the corresponding period is displayed.

(l-nl> Display information from microprocessor 7 (
Figure 4) t-Receive and display the corresponding image on the screen 12 Display information is the individual line elements (arcs, arcs, etc.) that make up the figure.
(or line segment), start point position information indicating the coordinates of both end positions, end point position information, and discrimination information indicating the line distinction (circular arc or line segment).

Type of rock (line thickness, solid line, broken line, single dot line, etc.)
It has line modification information that indicates.

The external disk storage device 3 is capable of storing a system control program PA (described later) that controls the entire device and a created graphic data table TBi in a predetermined location Ia.

The load program PC to be loaded onto a predetermined area on the device control program PA'tRAMS stored in the external disk storage device 3 and the screen position correspondence table TD (FIG. 13) are stored in J tn 4. has been done.

The AM 5 is composed of a program area 51 and a data area 52, each of which stores an apparatus control program PA and a graphic data table TB while the apparatus is in operation (see FIG. 5). Also, a figure ID number register 53, which is taken as a work area during execution of a figure input function, which will be described later.
Also, a screen position correspondence table area 54 to be used during operation of the screen movement function is set.

The microprocessor 7 executes the device control program PAt-1 stored in the program area 51 of the RAM 5.
It fetches instructions one by one, interprets them, and executes them.

When the power is turned on, the microprocessor 7 first performs an initial operation and then starts executing the device control program PA.

(2-+) Load the load program pc into a predetermined position on the program area 51 on H, AM S.

(2-11) Interpret and execute the load program PCe. That is, the device control program PA and the screen position correspondence table TD are each transferred from the external disk storage device 3 to R.
It is loaded onto the program area 51 and screen position correspondence table area 54 on AM5.

(2-***> Subsequently, execution of the program PA loaded onto the RAM S begins.

As mentioned above, the operation of each component is well known, and hereinafter, the operation of the apparatus, which is a feature of this embodiment, will be explained based on this premise.

(3-+) For initial settings and function allocation, the operation system of the device is shown in FIG. 6, and the overall flow of internal software is shown in FIG. 7.

When the apparatus is started, the apparatus control program FA is loaded as described above in routine AI, and then program PA starts to be executed. The program PA first starts with a graphic data table TBt- containing graphic data.
1 After loading from the external disk storage device 3 onto the RAM S, proceed to routine A2 and press the function key (input key 14).
) enters a key wait state that accepts key presses.

When a key on the keyboard 1 is pressed, the microprocessor 7 determines the key code sent to the keyboard 1 area, and if it is determined by the function key, the function is assigned to routine A.
3, and perform the corresponding function support routines (for example, input routine A4, screen special movement routine A5, etc.)
...).

When the execution of each function routine is finished, control of the program PA returns to the key wait routine A2.

(3-if'') Graphic Input Function First, the structure of graphic data, which is a premise for explaining this function, and the graphic input function that creates it will be explained.

The graphic input function is based on the operator's instructions on the screen (L
This is a function that creates graphic data inside the device (using a cursor) and then displays the graphic image on the display. ,! The operation is as shown in Fig. 8. First, after pressing the input key 14, L is directed to each of the vertices that make up the figure tl and plotted, and fsw, which connects each plot point, is This is done by specifying whether it is a line segment or an arc. Finally, the execution key 17 is pressed to finish inputting one figure.

Graphic data is created for each graphic input, and is stored in RAM
They are stored in the graphic data table TB on S in the order of creation.

The structure of the graphic data is shown in FIG.

(3-it-al) Graphic ID number field 91: Used for graphic generation. A figure ID number is written.

(3-it-32) Graphic data length field 92: Contains the length of graphic data. By referring to this, one piece of graphic data can be taken out from the graphic data table.

(3-ii-a3) Line division field pointer 93: The vertex position field varies by 9 depending on the number of figure vertices.

This pointer allows you to know the position tf of the beginning of the line division field (point A in Figure 49). (3-ii-34) Center position field 94: Center position of figure (average value of each vertex coordinate) ).

(3-+l-85) Vertex position field 95: There are as many vertices as there are vertices constituting the figure, and each vertex has 1-vertical coordinates.

(3-i-86) Line section 7 (-R)'96:96 There are as many line elements as there are on the top, and each line element has data to distinguish whether it is a line or an arc.

The graphic data shown above is created by the following process inside the device. Input key 14 in key wait routine A2
When is pressed, the PiMB sorting routine A3 starts, followed by the graphic input support routine A4. Subsequently, the graphic input support routine A4 performs data processing in the following steps. FIG. 10 shows the flow diagram.

(3-1t-bl) Add "1" to the current figure ID number registered in the figure number register 53. Next, this number is set in the figure II) number field 91 (FIG. 9) in the figure data (routine A41).

(3-++-b2) To determine the plot position, each time the plot key 18 (see FIG. 8) is pressed, a command to read the current cursor position is issued to the display 2 (routine A42).

(3-1i-b3) Write the read coordinates of the plot point into the vertex position field 91 in the graphic data (routine A44).

(3-1i-b4) Write the line segment classification (line segment or arc segment) inputted for each plot into the line segment field 96 (routine A45).

(Repeat 3-+t-bs+. In order to add the vertex position for each plot by Km in the vertex position fIL field 95, the line segment field 95 is moved backward by that amount, and the line segment field pointer is Add 7 moves to (routine A43).

(3-1i-b6) When receiving the execution key press signal, calculates the average value (Xsa, y@) of the coordinate values of each vertex and writes it to the center position field 94 in the figure data (routine A46 ).

(3-it-b7) The length of the sequentially written graphic data is determined and written in the graphic data length field 92 (routine A47).

(3-++-b > Based on the graphic data created above, display the graphic image on the display 2 as follows. Extract the first two coordinate values of each plot point in the graphic data, and One piece of line segment data is taken out from the beginning of the flJ element segment field 96, and both are sent and displayed on the display 2 as detailed information for configuration a line (see Figure 4). Do this for line elements.

(3-m > Screen special movement function Function key waiting state A, which is a function that embodies the contents of the present invention)
2, press control key 1 to instruct the start of this function.
Input the press signal of 5, then 0 what 1' in +y+-1zo! P0 digit' kernel 6s, b 4-- +:
Input the press signal. In response to this, the screen display range moves to a position on the paper surface to be processed corresponding to the relative position occupied by the pressed key in the rectangular arrangement of the numeric keypad 12. For example, in FIG. 11(a), 6" on the numeric keypad 12
When the key is pressed, the A position (in the same figure) or the C position (in the same figure) is pressed.
) to position B.

That is, (3-iii-a) Paper 19 (DI
/ Move the center (position A) of the 1i9 divided area of the paper surface obtained by dividing the page into three equal parts in the horizontal direction so that the center of the busy display screen 2o is located (see FIG. 11(b)).

(3-1it-b) In this movement, screen display range 2
When 0 exceeds 4 on the paper, as shown in Figure 11 (C),
Adjust toward the center of the paper by that amount (position B).

The internal processing that supports all of the above operations is described below.

When the control key 15 is pressed in the key signature routine A2 shown in FIG. will be carried out.

(3-11i-C1) In Lucia A51 waiting for the key,
The numeric keypad is pressed (A51).

If a signal from a key other than the numeric keys 1" to 9" is input, an abnormal buzzer is sounded (A52).

(3-iii-c2) When the signal from the numeric keypad from '1# to "''9# is entered manually, the corresponding number is read (A5
3).

(3-iii-c3) Using the read number as a key, search the screen position correspondence table 54 (FIG. 13) to find the screen center position corresponding to the corresponding number (A54).

(3-iii-C4) Check whether the screen display range obtained above does not extend beyond the page to be processed.

That is, the following comparison is performed (A55). The definitions of the symbols are shown in FIG.

(3-01-C5) If the screen display range extends beyond the page, correct the display center position as follows (A56)
.

For example, if the right edge of the display screen exceeds the right edge of the page, that is, if Δ becomes positive, x6'=x6- is newly set to (Xo'+)'o)'t'' display center position.

(3-jii-06) The display center position is sent to the display 2 and the corresponding range is displayed (A57).

〔Effect of the invention〕

According to the present invention, when it is desired to move the screen position If by a large amount on paper, the destination can be specified in an intuitive and easy-to-understand manner. In addition, the operation is a one-touch operation, which is particularly convenient when you want to move diagonally to a diagonal position on the page.

[Brief explanation of the drawing]

Figure 1 is the overall hardware configuration diagram of the device of one embodiment, and Figure 2 is
The figure is a diagram showing the configuration of the keyboard, Figure 3 is an explanatory diagram of the display state, Figure 4 is a diagram showing the configuration of information displayed on the display, Figure 5 is a diagram showing the configuration of the RAM, and Figure 6 is a diagram of the overall operation system. , Fig. 7 is an overall flow diagram of the control program, Fig. 8 is an operation flow diagram of the input function, Fig. 9 is a configuration diagram of graphic data, Fig. 10 is a flow diagram of input processing, and Figs. (C) is an explanatory diagram of a screen movement state, FIG. 12 is an internal processing flow diagram of screen movement, and FIG. 13 is a configuration diagram of a screen position correspondence table. 1...Keyboard, 2...Display, 3...
External disk storage device, 4...ROM, 5...R,
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Claims (1)

[Claims] 1. A computer system comprising a memory for storing graphic data, a display for displaying a part of the graphic data based on the graphic data of the paper surface to be processed, and a keyboard having keys arranged in at least a rectangular shape. In a screen movement control device for a display device, there is provided a table having position data for each key in the rectangular arrangement of keys in the entire rectangular arrangement of keys; 1. A screen movement control device, comprising: a control section for referencing and setting a display range of a display to a corresponding similar position on a paper surface to be processed. 2. The screen movement control device according to claim 1, wherein the rectangular arrangement key is a numeric keypad.