JPS634317A - Key input device - Google Patents

Abstract

PURPOSE:To eliminate the need for the composition processing of an image and a grid pattern and to reduce the load on a host computer by providing a grid pattern display means and an image display means individually. CONSTITUTION:A grid (checker) display pattern corresponding to grid intervals of a found key matrix is stored in a ROM 3-1. When the display grid intervals are varied, interval information on a display grid is received from a host computer 3 firstly. Then, the grid display pattern is read out of said ROM 3-1 and also the grid intervals of key switches are set to the specified grid intervals. Then, the display variation of the grid is confirmed and the read grid display pattern is displayed on a liquid crystal display pattern 6, thus finishing the variation procedure of the display grid intervals.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application) The present invention relates to a key input device that includes a display device and a touch panel that is a transparent touch key input device that is attached to the display screen of the display device.

[Conventional technology]

Generally, in a key input device that uses a cathode ray tube (CRT) and has a transparent touch panel attached to the display screen,
Since input is made by pressing down on the touch panel with a finger or a pen, erroneous inputs are common because the key tops displayed on the C87 screen are not clearly separated. In particular, when instructing the position of an image screen such as a graph, the post computer that controls the display device displays a grid indicating touch key divisions on the display screen of the display device, overlapping the key tops, and presses the key switch on the touch panel. Devices that indicate points are known, but in order to be able to set the touch panel's grid spacing variably, the pattern of the displayed grid must be changed according to the specified touch panel grid spacing. This increases the load on the host computer that controls the touch panel and display screen.
There are problems in that the device configuration becomes complicated and the grid display switching time becomes long.

(Problems to be Solved by the Invention) Therefore, the purpose of the present invention is to solve these problems, reduce the load on the host computer with a simple device configuration, and provide a reliable method for inputting touch keys. The purpose of this invention is to provide a key input device that can perform the following tasks.

[Means for solving problems]

In order to achieve such an object, the present invention provides a first display means for displaying key tops and/or image information;
a second display means that is provided on the display screen of the first display means and displays a pattern without interfering with the display of the first display means; ,
a plurality of key switches that do not obstruct the display of the first display means and the second display means; a first control means that variably sets grid intervals of the plurality of key switches; and second control means for causing the second display means to display a pattern indicating the grid interval.

[For production]

In the present invention, when the grid interval information of the key switch is sent from the host computer to the first control means, the first
The control means sets the key switch to a grid interval according to the grid interval information. Further, the second control means displays a pattern according to the set grid interval on the second display means, so that it is possible to reduce erroneous inputs when entering keys, and also to reduce the load on the host computer. can.

〔Example〕

Hereinafter, the present invention will be described in detail and specifically with reference to the drawings.

FIG. 1 shows an example of the configuration of an embodiment of the present invention. 1 is CR7
This is a display device, and 2 is a touch panel having a transparent touch key section 2-1 attached to the display screen of the display device 1. Reference numeral 3 denotes a driver section that edits the pressed position coordinates of the touch key section 2-1 into a coordinate signal, transmits the pressed coordinates to the host computer 5, and receives grid interval setting information of the touch panel 2 from the host computer 5.

The driver section 3 sets the grid interval of the key switch corresponding to the grid interval instructed by the host computer 5, and causes the display 6 to display a pattern corresponding to this grid interval. Furthermore, the driver section 3 is a read-only memory (ROM) that stores pattern information corresponding to the set grid and the control procedure shown in FIG.
3-1, a central processing unit (CPU) 3-2 that executes the control procedure shown in FIG.
3-3.

Reference numeral 4 denotes a driver section for driving the display device 1, which converts image information sent from the host computer 5 into a drive signal for driving the display and sound system 1 for display. Reference numeral 6 denotes, for example, a transmissive liquid crystal panel that displays grid pattern information sent from the driver 3.

2 to 5 show the key matrix of the touch key section 2 shown in FIG. 1 and the grid display pattern of the 5-transmission type liquid crystal panel.

FIG. 2 is a basic matrix of the touch key unit 2, and shows a coordinate array when the finest precision is selected. FIG. 3 shows an example of a grid display corresponding to the key matrix shown in FIG.

Figure 4 shows the accuracy of the matrix shown in Figure 2 in the x direction and y direction.
The case where both directions are set to double is shown. In other words, if you specify the accuracy shown in Figure 4 to the driver 3, even if you press the coordinate position (1, 1) shown in Figure 2 on the basic matrix, the coordinates shown in Figure 4 will be (0, 0). The set coordinates are returned to the host computer 5. LCD panel 5
As shown in FIG. 5, the grid display shown in FIG. 5 also corresponds to the accuracy of the key matrix.

If you want to set the grid spacing of the key matrix to 3 times the basic key matrix spacing shown in Figure 2, change the coordinate If the quotient divided by is used as the new X coordinate, the new coordinate can be easily obtained, and the same applies to the y axis.

When displaying a grid according to the grid interval of the key matrix set in this way, on the coordinate axes in Figure 2 according to the grid interval of the key matrix, in the case of double precision, the X coordinate is 1° 3.5...・, even the y coordinate is 1
, 3.5, etc. It goes without saying that it is sufficient to display the eyes first.

In this embodiment, a grid (first eye) display pattern corresponding to the grid interval of the key matrix obtained in this manner is stored in the ROM 3-1.

In addition, if you specify the basic eye pattern shown in Figure 3,
Since the intersection of the squares becomes the position coordinate, it is possible to input the image position information reliably.Instruct the double-precision square pattern shown in Fig. 5, and the key top is first seen on the CR7 display device 1. By displaying the screen in this manner, characters and symbols can be entered reliably.

Alternatively, the grid interval may be set in accordance with the size of the characters and symbols displayed on the CR7 display device 1.

FIG. 6 shows an example of a control procedure by the CPU 3-2 when changing the display grid interval in the embodiment of the present invention.

In FIG. 1, in step S1, the host computer 5
Upon receiving display grid interval information from
In step 2, the grid display pattern is read from the ROM 3-1, and the key switch grid spacing is set to the specified grid spacing.

In step S3, the grid display change is confirmed, and the grid display pattern read out in step S4 is displayed on the liquid crystal display panel 6, and this control procedure ends. If the display grid spacing information received from the host computer 5 is the same display grid spacing as that of the liquid crystal display panel 6, it is determined in step 3 that the grid spacing will not be changed.
At this time, this control procedure ends.

In the embodiment of the present invention, an example of displaying straight squares as a grid display is shown, but it is also possible to display the squares using dotted lines or solid lines, and symbols that do not interfere with the display of the CRT display device For example, the * signal may first be displayed at the intersection of the eyes.

Further, in the embodiment of the present invention, the grid spacing is instructed from the host computer 5, but it goes without saying that it may also be input from the touch panel 2.

〔Effect of the invention〕

As explained above, according to the present invention, since the grid pattern display means and the image display means are provided separately, there is no need to perform the process of compositing the image and the grid button, and the load on the host computer can be reduced and the coordinate setting When inputting letters and symbols, a grid display suitable for the input is performed, so the input position can be distinguished, which has the effect of reducing erroneous input.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention; FIG. 2 is an explanatory diagram showing key matrix coordinates of the touch panel 2; FIG. 3 is an explanatory diagram showing a grid display corresponding to the key matrix shown in the second diagram; FIG. 4 is an explanatory diagram showing double-precision key matrix coordinates, FIG. 5 is an explanatory diagram showing a grid display corresponding to the key matrix shown in FIG. 4, and FIG. 6 is an example of a control procedure in an embodiment of the present invention. It is a flowchart. DESCRIPTION OF SYMBOLS 1... CRT display device, 2... Touch key panel, 3... Touch panel control driver, 4... CR7 display device control driver, 5... Host computer, 6... Transmissive liquid crystal panel. The actual date and month of 911, Figure 1, Figure 1, This issue also shows the 911 month (911). Figure 3 showing the table of 1. 2 → Display of 1 book for BQ practice. 70-1000 Mart Figure 6

Claims (1)

[Scope of Claims] A first display means for displaying key tops and/or image information; and a first display means provided on a display screen of the first display means so as not to obstruct the display of the first display means. a second display means for displaying a pattern; a plurality of key switches arranged on the display screen of the second display means and not interfering with the display of the first display means and the second display means; A first control means for variably setting the grid interval of the key switch, and a second control means for causing the second display means to display a pattern indicating the grid interval according to the set grid interval. A key input device characterized by: