JP3244143B2 - Display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a display device used as a graphical user interface (hereinafter, referred to as a GUI).

[0002]

2. Description of the Related Art A GUI is a user interface in which commands represented by graphic figures are displayed on a screen, and an operator operates by selecting a command on the screen with a mouse or the like. Since GUIs are easy to operate even for beginners, GUIs have recently been frequently used in workstations and personal computers. 2. Description of the Related Art Conventionally, in a display device that performs a GUI function, when data is displayed in a graph, a display range of data is specified and a display magnification is enlarged or reduced as follows. (1) Direct input from a keyboard. (2) Designating a display range on a graph using a mouse. However, since the conventional example of (1) uses a keyboard,
There was a problem that operability was poor. Further, in the conventional example of (2), since the mouse is used, the operability is improved as compared with (1), but the display ranges of the X axis and the Y axis of the graph are determined simultaneously. When the display magnification is enlarged, there is a problem that only one type of display magnification can be set for one entire graph.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can independently set a display range and a display magnification for each graph axis, and can set an arbitrary display magnification. It is an object to realize a simple display device.

[0004]

According to the present invention, there is provided a graphic display unit connected to a computer, and a mouse for pointing an arbitrary position on a graphic screen with a cursor and inputting a screen to the graphical user. In a display device serving as an interface, an input unit for receiving a screen input from the mouse, a determining unit for determining a screen input received by the input unit, and a mouse for a screen on which data is graphed and displayed. Axis moving means for performing a process of moving the graph axis specified by the above in units of an axis, and performing a process of enlarging or reducing the graph axis specified by the mouse with respect to the screen on a screen in which data is graphed and displayed. Scaling means, a graph axis moved by the axis moving means, and
Axis display means for redrawing a graph axis enlarged or reduced by the enlargement / reduction means on a screen, a moved graph axis, and a graph display means for redrawing a graph on the screen so as to correspond to the enlarged or reduced graph axis; In accordance with the screen input from the mouse and the position in the graph axis specified by the mouse, the display magnification of the graph is enlarged or reduced, and the graph is displayed without changing the display magnification. A display device characterized by selectively executing a display range enlargement / reduction process for enlarging / reducing a range of values to be performed and a movement process for moving a graph.

[0005]

According to the present invention, the enlargement / reduction means enlarges / reduces the graph axis specified by the mouse in units of axes on a screen in which data is graphed and displayed. The axis display means redraws the graph axis scaled by the scaling means on the screen. The graph display means redraws the graph so as to correspond to the enlarged or reduced graph axis. by this,
The display magnification scaling processing and the display range scaling processing are performed. The axis moving means moves a graph axis designated by a mouse in units of axes with respect to a screen on which data is graphed and displayed. The axis display means redraws the graph axis moved by the axis moving means on the screen. The graph display means redraws the graph so as to correspond to the moved graph axis. Thereby, the movement processing is performed. The above three processes are selected according to the screen input from the mouse and the position in the graph axis specified by the mouse.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG.
FIG. 1 is a configuration diagram showing one embodiment of the present invention. In FIG. 1, 1
Denotes a graphic display unit, 2 denotes a mouse, and 3 denotes a computer. The graphic display unit 1 is connected to the computer 3 and performs a screen display based on the control of the computer 3. The mouse 2 performs screen input on the graphic screen displayed on the graphic display unit 1. In the computer 3, 31 is a CPU, 32 is a display control unit, 3
Reference numeral 3 denotes a storage unit. In the CPU 31, reference numeral 311 denotes input means for receiving a screen input from the mouse 2, and 312 denotes input means 31.
This is a determination means for determining the type of screen input received in step 1.
Reference numeral 313 denotes an axis moving unit that performs a process of moving the specified graph axis when the graph axis is specified with the mouse 2 on a screen in which data is graphed and displayed. The movement can be performed in graph axis units. Reference numeral 314 denotes an enlargement / reduction unit that performs processing for enlarging or reducing the designated graph axis when a graph axis is designated with the mouse 2 on a screen in which data is graphed and displayed. Scaling can be done in graph axis units. The moving process and the scaling process are selected according to the button pressed by the mouse and the position in the graph axis specified by the mouse. In the display control unit 32, an axis display unit 321 redraws the graph axis subjected to the movement processing and the enlargement / reduction processing on the screen. Reference numeral 322 denotes a graph display unit that redraws the graph on the screen so as to correspond to the graph axis on which the movement process and the enlargement / reduction process have been performed. A storage unit 33 stores image data to be displayed on the graphic display unit 1 and is accessed by the display control unit 32, the axis moving unit 313, and the scaling unit 314. In such a display device, enlargement / reduction processing of a display magnification, enlargement / reduction processing of a display range, and movement processing of a graph are performed on a screen in which data is graphed and displayed. The enlargement / reduction processing of the display magnification is processing for enlarging or reducing the scale (scale) of the graph axis to represent the graph in an enlarged or reduced manner. The display range enlargement / reduction processing is processing for enlarging or reducing the range of values for displaying the graph without changing the display magnification of the graph.

[0007] The operation of the display device thus configured will be described. FIG. 2 is a flowchart showing the operation procedure.
This flowchart is a flowchart showing processing procedures of a display magnification enlargement / reduction process, a display range enlargement / reduction process, and a graph moving process. In FIG. 2, processing X1
Then, when the mouse button is pressed, the state is set according to the position on the screen specified by the mouse. When the position specified by the mouse is at the end of the graph axis, the state is set to the enlargement / reduction mode. When the position is other than the end of the graph axis, the state is set to the movement mode. When the mouse is moved while holding down the mouse button, enlargement / reduction processing or movement processing is performed on the graph axis according to the set state. In other words, the graph axis is scaled and redrawn when the mode is set to the enlargement / reduction mode, and the graph axis is moved and drawn to the destination when set to the movement mode. When the mouse button is released, enlargement / reduction processing or movement processing is performed on the graph according to the set state. That is, the graph is redrawn so as to correspond to the graph axis changed by the enlargement / reduction processing or the movement processing. In the flowchart of FIG. 2, both the enlargement / reduction processing of the display magnification and the enlargement / reduction processing of the display range are included in the enlargement / reduction processing. These two processes are distinguished according to the button pressed by the mouse.

FIG. 3 is a state transition diagram corresponding to the flowchart of FIG. In FIG. 3, states A to D and processings 1 to 5 are the same as those in FIG.

The enlargement / reduction processing of the display magnification, the enlargement / reduction processing of the display range, and the movement processing performed by the display device of FIG. 1 will be described with reference to a display screen as an example. FIG. 4 shows a display screen before processing.

FIG. 5 is a diagram showing a display screen when the display magnification processing is performed. In FIG. 5, first,
(A) As shown in the figure, the graph axis to be changed is selected (clicked) with the mouse. Next, as shown in FIG. 6B, the end of the graph axis to be changed is indicated by the mouse, and the left button of the mouse is pressed in this state. Then, hold down the left button and move the mouse to an appropriate position. This causes the graph axes to be stretched. Then, when the graph axis is extended to a desired position as shown in FIG. Thereby, the scale of the graph axis is enlarged, and the graph itself is also enlarged so as to correspond to the graph axis of the enlarged scale.

FIG. 6 is a diagram showing a display screen when the display range is enlarged or reduced. In FIG. 6, first,
(A) As shown in the figure, the graph axis to be changed is selected (clicked) with the mouse. Next, as shown in FIG. 5B, the end of the graph axis to be changed is indicated by the mouse, and the middle button of the mouse is pressed in this state. Then, while holding down the middle button, the mouse is moved to an appropriate position. This causes the graph axes to be stretched. Then, when the graph axis is extended to a desired position, the middle button of the mouse is released as shown in FIG. This expands the range of values displayed on the graph axis. The scale interval (display magnification) does not change even if it is enlarged. The range of values displayed on the graph is expanded to correspond to the expanded graph axis. In the figure, a portion of the graph where the value of the Y axis takes a negative value is added.

FIG. 7 is a diagram showing a display screen when the moving process is performed. In FIG. 7, first, as shown in FIG. 7A, a graph axis to be changed is selected (clicked) with a mouse. Next, as shown in FIG. 6B, a position other than the end of the graph axis to be changed is designated by the mouse, and the left button of the mouse is pressed in this state. Then, hold down the left button and move the mouse to an appropriate position. This moves the graph axis. Then, when the graph axis is moved to a desired position as shown in FIG. As a result, the graph axis is displayed at the position of the movement destination. The graph is moved to correspond to the moved graph axis.

[0013]

According to the present invention, since the graph axes to be processed are selected in units of graph axes with the mouse, the processing for enlarging / reducing the display magnification and the processing for enlarging / reducing the display range are performed independently for each graph axis. it can. Further, by moving the mouse, the graph axis can be extended or shortened to an arbitrary position, so that the graph can be enlarged or reduced at an arbitrary magnification.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of the present invention.

FIG. 2 is a flowchart showing an operation procedure of the apparatus of FIG.

FIG. 3 is a state transition diagram corresponding to the flowchart of FIG. 2;

FIG. 4 is a diagram showing an example of a display screen of the apparatus of FIG.

FIG. 5 is a diagram showing an example of a display screen when performing a process of enlarging or reducing a display magnification.

FIG. 6 is a diagram showing an example of a display screen when performing a display range enlargement / reduction process.

FIG. 7 is a diagram showing an example of a display screen when performing a movement process.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Graphic display part 2 Mouse 3 Computer 31 CPU 311 Input means 312 Discrimination means 313 Axis movement means 314 Enlargement / reduction means 32 Display control part 321 Axis display means 322 Graph display means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06F 3/14 340 G06F 3/033 340 G06F 3/153 320 G06T 1/00 G09G 5/36

Claims (1)

(57) [Claims] 1. A display device having a graphic display unit connected to a computer, and a mouse for designating an arbitrary position on a graphic screen with a cursor to input a screen, and performing a function of a graphical user interface. An input unit for receiving a screen input from the mouse; a determination unit for determining a screen input received by the input unit; and a graph axis designated by the mouse with respect to a screen on which data is graphed and displayed. Axis moving means for performing processing for moving the data in units; scaling means for performing processing for enlarging or reducing the graph axis designated by the mouse on a screen on which data is graphed and displayed; Axis display means for redrawing the graph axis moved by the means, and the graph axis enlarged or reduced by the enlargement / reduction means on a screen; Axes, and graph display means for redrawing the graph on the screen so as to correspond to the scaled graph axes, according to a screen input from the mouse and a position in the graph axis designated by the mouse To enlarge or reduce the display magnification of the graph, enlarge or reduce the display range without changing the display magnification of the graph, and perform the movement processing to move the graph. A display device, which is selectively executed.