JPH07111618B2 - Scroll screen display method and device - Google Patents

Description

The present invention relates to a graphic scroll system in which a part of graphic information once registered is displayed on a display screen and an operator moves the graphic displayed part.

[Conventional technology]

Conventionally, as for a method of scrolling a figure, as a method capable of particularly smooth scrolling, it has been discussed in JD FOLEY / A.VAN DAM, translated by Atsumi Imamiya, "Computer Graphics", p505 to p507. There, a method called refresh buffer conversion is used. The conversion of a part of the figure drawn on the refresh buffer (or frame memory) to the view plane (display screen) is displayed one after another (called the refresh buffer or frame memory window). Scrolling is done by changing and repeating.

An example of a screen display when the map information is continuously scrolled by the conventional method is shown in FIG. 2, which will be described later, and a specific configuration example is shown in FIG. In FIG. 9, the video signal generator 6 converts only the graphic within the window range in the frame memory 5 into a video signal and displays it on the graphic display 1 according to the instruction information of the frame memory window position.

[Problems to be Solved by the Invention]

In the above-mentioned conventional method, as shown in FIG. 2, all the figures expanded in the frame memory are scrolled, and when the figure quantity becomes large, it becomes confusing and difficult to see. There was a problem that the afterimage of the previous frame remaining on a certain tube surface overlapped with the new one, making it difficult to see and scrolling to find the desired figure. In FIG. 2, 121 indicates the display state before scrolling, and 122 → 123 → 124 → 1 during scrolling.
The display state is as in 25 →, and after scrolling, the display state is indicated by 126. In particular, in order to scroll while displaying a part in a wider range of drawings, it is necessary to increase the scroll speed in order to improve the figure search capability, and these problems have become remarkable.

As another conventional method, the whole figure of the figure is displayed on one part of the display, and which area of the figure is displayed is indicated by a rectangle or mark in the whole figure to facilitate the search for the target figure. However, if there were too many figures in the overall view, there was a problem that the overall view became too small to recognize the shape well and would not function at all.

The object of the present invention is to reduce the flicker of lines during scrolling even under these conditions, to easily find the figure to be searched,
It is to improve the operability of the operator.

[Means for Solving the Problems]

A first feature of the present invention is to display a partial area of stored graphic information on a display screen and enable scrolling of the area. This is to change the graphic information.

A second feature of the present invention is that storage means for storing graphic information, display means for displaying a partial area of the stored information on the screen in graphic form, and movement of the above-mentioned graphic-displayed area. In a configuration including a processing device that executes, the processing device is provided with a control unit that can temporarily change the display information included in the graphic information and displayed on the screen, and when moving the area where the graphic display is performed, This is because the display information is changed.

Further, a third feature of the present invention is that a storage means for storing graphic information composed of a plurality of hierarchical data, a display means for graphically displaying a partial area of the stored information on the screen, and a graphic display. In the configuration including a processing device that executes the movement of the area, the processing device is provided with a control unit that temporarily changes the screen display by selecting a hierarchy of the hierarchy data, and the area that is graphically displayed. This is because a part or all of the hierarchical data is deleted and displayed when moving the.

[Action]

Since specific graphic information is erased during graphic scrolling, the amount of displayed graphic is reduced, the flicker of the displayed graphic during scrolling is reduced, the graphic to be searched is easily found, and the operability of the operator is improved.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 4 shows an example of the hardware configuration for implementing the present invention.

In FIG. 4, the processing device 3 is connected to the common I / O bus 10 and incorporates an application program for performing graphic processing, and executes graphic processing. As the graphics processing progresses, the graphics command data is stored in the graphics command data memory 4.

The graphic command data memory 4 is not a special memory but a memory that can be accessed by the graphics control device 2, and in general, an IC memory that can be accessed at high speed is often used.

The graphic command data is read by the graphic control device 2, interprets its contents, and expands it in the frame memory 5 as vector information. The graphic command data memory 4 has a large capacity and can store data of a wide area including map information at one time. However, when it is necessary to display larger information, the data is stored in the auxiliary storage device 11.
The frame memory 5 is larger than the screen size of the graphic display 1 (1000 pixels x 1000 pixels or more), and in the case of the color graphic display, one pixel requires 4 to 24 bits, and the capacity is 2 MB to 12 MB or more. It has a large capacity. The bit map information developed in the frame memory 5 is read into the video signal generator 6, where D / A conversion is performed, and then a graphic is displayed on the graphic display 1 by the video signal. Which part of the vector information drawn in the frame memory 5 is read by the video signal generator 6 and displayed is determined by the frame memory window, and this position can be designated by the processing device 3.

On the other hand, the operator inputs the scrolling direction with the input device 8, and this value is read by the processing device 3, and the processing device 3 moves the position of the frame memory window. Then, the contents of the graphic displayed on the display 1 move and scrolling is realized.

Next, a more detailed operation will be described with reference to FIGS.

Drawing is possible in each of the frame memories 51 to 53. Which graphic information is drawn in which frame memory (51 to 53) can be specified by a specific graphic command. In this example, the map information is sent to the road information group 41,
House information display group 42, owner information display group 43-3
It is divided into two and developed in the frame memories 51 to 53, but the classification is determined by the graphic information required at the time of scrolling. There is no need to stick to this example.
It can be realized if the number of frame memories is at least two. The figures thus drawn in the respective frame memories 51 to 53 are read into the video signal generator 6 through the frame memory read mask device 9 shown in FIG. The frame memory read mask device 9 masks the read of the frame memories 51 to 53 according to the frame memory read mask information output from the processing device 3.
As a result, only the contents of the frame memory that have not been masked are displayed on the graphic display 1. When a scroll instruction is input from the input device 8, the processing device 3 can realize a predetermined function by giving the frame memory read mask information described above to the frame memory read mask device 9.

FIG. 1 shows an example of a scroll screen according to the present invention. Among the road information, house information and owner information shown in FIG. 5, only the road information is displayed during scrolling.

That is, although the road information, the house information, and the owner information are all displayed on the display screen 111 before scrolling,
During the scrolling, as shown in 112 → 113 → 114 → 115 → 116, the house information and the owner information in the display graphic information are erased from the screen, and the road information (more accurately, the town name such as Matsuzakicho 1-chome town name) is displayed. Is also displayed), and all the graphic information is displayed as indicated by 116 after scrolling after searching for the object. In this scroll example, the operator himself knows the road information, which is convenient for searching for a target object.

In this example, as described above, since there is little graphic information during scrolling, flicker is reduced and operability is improved for the operator.

Next, another embodiment will be described with reference to FIGS. 7 (a) and 7 (b).

Some figure command data can be used to instruct whether to display the figure in normal color, or to perform highlighting such as highlighting or blinking display. This will highlight any figure. Can be displayed or displayed normally. FIG. 7 (a) is an example in which only house information is highlighted, and FIG. 7 (b) is an example in which all figures are normally displayed. As described above, since any figure can be highlighted or displayed normally, the processor 3 can realize scrolling in which a search target can be easily followed by highlighting some figures when scrolling.

FIG. 3 shows one example of scrolling according to the present invention.
As in 32 → 133 → 134 → 135, only the graphic information is displayed and the house information is highlighted.

In this example, when the search target is a special figure such as the Motomachi Community Center 137, it is possible to easily follow the search target by scrolling.

Although the house information is highlighted in FIG. 3, only the road information may be highlighted.

FIG. 8 shows an embodiment of a method for changing the amount of graphics to be scrolled according to the scroll speed.

In FIG. 8, the processing device 3 reads the scroll direction and the scroll speed from the input device 8, and the calculating unit 32 calculates the figure amount to be scrolled from the scroll speed. In general, the calculation formula is such that the scroll figure amount decreases as the scroll speed increases. Calculation unit according to the scroll figure amount determined here
Reference numeral 31 determines the frame memory read mask amount described above, and instructs it as frame memory read mask information 33 to the frame memory read mask device 9 shown in FIG.

〔The invention's effect〕

As described in detail above, according to the present invention, even if the scrolling speed is high, it is easy to perform a graphic search, and it is possible to perform scrolling with less eye strain.

[Brief description of drawings]

1 and 3 are specific examples of scroll screens using the present invention, FIG. 2 are specific examples of scroll screens using the conventional method, FIG. 4 are hardware configuration examples for realizing the present invention, and FIG. FIG. 6, FIG. 7, FIG. 8 and FIG.
FIG. 9 is a diagram for explaining the operation of the conventional method. DESCRIPTION OF SYMBOLS 1 ... Graphic display, 2 ... Graphic control device, 3 ... Processing device, 4 ... Graphic command data memory, 5 ... Frame memory, 6 ... Video signal generator, 7 ...
I / O control device, 8 ... Input device, 9 ... Frame memory read mask device, 10 ... Common I / O bus, 11 ... Auxiliary storage device.

Claims (6)

[Claims] 1. A scroll screen display method in which a partial area of stored graphic information is displayed on a display screen and the area can be scrolled. A scroll screen display method, characterized in that the amount of display information included in the graphic information to be scrolled and displayed on the screen is changed according to the scroll speed. 2. The scroll screen display method according to claim 1, wherein the amount of information is changed by temporarily reducing the amount of information of the displayed graphic when the scroll speed increases. 3. A storage means for storing graphic information, a display means for graphically displaying a partial area of the stored information on a screen, and a processing device for executing the movement of the area in graphic display. In the scroll screen display device, the processing device includes a control unit that can temporarily change display information included in the graphic information and displayed on the screen, and is set when moving the graphic display area. A scroll screen display device, wherein the information amount of the display information is changed according to the scroll speed. 4. The control means is adapted to reduce the amount of information to be displayed when a set scroll speed is increased when scrolling a graphic display area. The scroll screen display device according to claim 3. 5. The scroll screen display device according to claim 3, wherein the set speed is given from an input device. 6. A storage means for storing graphic information composed of a plurality of hierarchical data, a display means for graphically displaying a partial area of the stored information on a screen, and a movement of the area displaying the graphic. In a scroll screen display device having a processing device that executes, the processing device includes a control unit that temporarily changes the screen display by selecting a hierarchy of the hierarchy data,
A scroll screen display device, characterized in that a part of the hierarchical data is erased and displayed when the area displayed in a graphic form is moved.