JPS5922127A - Key switch for cursor movement control - Google Patents

Abstract

PURPOSE:To shorten the movement time of a cursor and to improve efficiency, by moving the cursor with a simple key and adjusting the brightness of a display part. CONSTITUTION:When the cursor K on a CRT2 is moved upward to left, the left upper part point A of a key top 6 on a key switch control unit 4 is depressed from above, and then the cursor K moves. When the brightness of the CRT2 is adjusted, the key top 6 is pressed continuously in a left direction B or right direction C until desired brightness is obtained.

Description

[Detailed Description of the Invention] The present invention allows you to move the cursor by operating a single key top! The present invention relates to a key switch for controlling cursor movement which outputs the 7th 1j number which performs 'lh control and brightness fljlJ 7811k.

Conventionally, the movement of the cursor on the 1st display section was done using four keys "↑", "↓j", "←" and "→
It is necessary to do this while operating each of the ``.

Therefore, it is difficult to move the cursor smoothly.
Also, it takes a lot of time to set the cursor position. For this reason, various methods have been considered to allow the cursor on the display to move freely by pressing a single key. ,! ! , the display screen is difficult to see I), j
W-adjustment of alLrL occurred. Then, each time, the brightness adjustment
I often found it inconvenient to reach up to 17 yum.

The present invention is proposed in view of these problems in the prior art, and its objectives are as follows.

To provide a key switch for controlling cursor movement, which can move the cursor with a single key and also adjust the brightness 1i of a display section. Furthermore, it is desirable to provide a VCL/cursor movement control key switch that allows such control to be performed via a cable at a location that is easy to operate and is away from the keyboard section of the main body of the electronic device.

Hereinafter, typical embodiments of the present invention will be explained with reference to the accompanying drawings. fJJl will explain.

Fig. 1 shows the features of the present invention, in which 1 is an electronic device, for example, an internal computer, and inside 1 there are CPU 1, AM12, and RO as shown in Fig. 5.
M13 and brightness control device 14 are housed. 2 is a display unit (CRT>), 3 is a geared unit, 4 is a key switch unit for cursor motion instruction according to the present invention (hereinafter simply referred to as the key switch unit 4), and 5 is the main body 1 and the key switch unit. This is the code that connects 4.

A case will be briefly described in which the cursor K on etc'l'2 is moved to the upper left V as shown by the second mark according to the first embodiment of the present invention. In this case, as shown in FIG. 3 (5), the cursor 1 is moved by pressing the upper left part (point A) of the 1000-trace f6 on the key switch unit 4 from above. Also, if you want to brighten the brightness of C 14 T 2, press key top 6 all the way to the left (arrow B) to
The brightness you desire is carefully controlled until it becomes as bright as you desire.
If you want to darken the screen, just press and hold key top 6 all the way to the left (arrow C) until the screen reaches the desired darkness.

The structure of this key switch unit 4 is as shown in FIG. 4 (g). A spherical motion-conducting ball 7 and a leaf spring contact 8 are provided at I, and the leaf spring contact 8 comes into contact when force is applied to the key top 6 from above. Furthermore.

Information based on this contact is sensed by cpullK to control the direction of movement of the cursor. Here, if the key horn 6 is pressed down from above at a position where the leaf spring contact 8 is not provided, as at point A in FIG. When force is applied to both 1 and both contacts touch, the CPU
ll can detect this contact information as information for moving the cursor K to the upper left.

Similarly, a spherical motion conduction gale 9 is placed around the Keytra f6.
and a leaf spring contact 10 are provided.

The leaf spring contacts 10 are brought into contact by applying a horizontal force to the key dog 6. Furthermore, information based on this contact is sensed by cpull.

The brightness of the C-box T2 is controlled via the brightness control device 14. This brightness control device 14 is configured to be able to adjust the beam current of the C-type T2 based on a signal sent from the CPU 11. for example.

When the key top 6 is pressed in the direction B in FIG. 3 (g), force is applied to the leaf spring contact 10X on the side of FIG.
When X contacts, cpull controls the brightness control device 14 to increase the screen brightness.

Next, the leaf spring contacts 8 and 10 are opened and closed Ii! The means for detecting t will be explained with reference to FIG.

The plate spring contact 8 is provided with an insulator 1 as shown in No. 6 □□□N.
The leaf spring contacts 8 and 8 are spaced apart from each other. These contacts 81 and 8z are connected to the key top 6.
When a pressing blade is applied to the opening, it closes as shown in Figure 4. Therefore, the terminal Bt outputs 0 volts because it is short-circuited to the grounded terminal 8t1. However, if it is not closed, it is 5 delts due to the effect of the pull-up resistance ratio.

Further, as shown in FIG. 6(c), the leaf spring contact 10 has
Plate-to-plane contacts 10 spaced apart by insulators 15
1 and 10- are included. These contacts 101 and 1
When a sliding force is applied to the 0x us key dog 6, it closes as shown in FIG. 40. Therefore, the terminal 10ts
Is the terminal 0 short-circuited to the grounded terminal 10tt?
output the root. However, when it is not closed, it is 5 gelt due to the action of the sol-up resistance ratio.

The cpull periodically connects these plates to contacts 8 and 10.
is configured to examine the terminals Bt, and 10t, of. Alternatively, an interrupt is input to cpullK due to at least one contact being closed, thereby starting service to the keyswitch, and an interrupt input is input to cpull again due to all contacts being opened, and this The configuration may be such that the service to the key switch is terminated by the key switch. In any of the above cases, while the key switch is being serviced, the contact information of the contacts is taken into cpull at a predetermined period. Therefore, it is possible to detect in which direction the cursor K is moved by monitoring the terminals Bt of the 4 sets of Q leaf spring contacts, and similarly, by monitoring the terminals 10 tx of the 2 sets of leaf spring contacts, the display can be performed. Information for increasing or decreasing the brightness of the section 2 can be detected.

Furthermore, if the periodically acquired contact information is the same,
cpull repeats the same control.

Furthermore, since the structure of the key switch is symmetrical as described above, a signal for moving the cursor is output in response to the sliding displacement of the key dog 6 in the horizontal direction, and a signal for moving the cursor is output in response to the displacement of the selection in the vertical direction. A second embodiment of the key switch is also proposed, which outputs a signal for brightness control. The operation in this case is shown in Figure 3 (b).
As shown in the figure, the cursor is moved by simply pressing the key top 6 on the key switch unit 4 in the upper left direction (arrow A).

Also, if you want to brighten the brightness of the C-T2, just press and hold the left part of the key top 6 (point B) from above until the screen reaches the desired brightness, and if you want to make it darker, press the left part of the key top 6 (point B) Just keep pressing the right part (point C) from above until the screen reaches the desired darkness.

Regarding the structure of this key switch unit 4, please refer to the 4th section.
It is shown in FIG.

In the above description, it goes without saying that commercially available switches may be used in place of the motion conducting balls 7 and 9 and the leaf spring contacts 8 and 10.

As described above, according to the present invention, it is possible to provide control input for moving the cursor on the display section by operating a single key top, and furthermore, it is possible to freely adjust the brightness of the display section by operating the same key top. Therefore, even if the brightness around the display changes suddenly, the brightness of the screen can be adjusted to a level that is easy to see, making it possible to move the cursor with a blind touch while looking at the display, which can be done for an hour. It is very efficient with little loss. Furthermore, it is very convenient because such control can be performed via a cable at a location that is easy to operate and is away from the keyboard section of the main body of the electronic device. As described above, although the configuration of the present invention is simple, it can produce extremely large effects.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view showing one embodiment of the present invention. 2 and 3 (II is an explanatory diagram of the operation of the cursor moving keyswitch unit according to the present invention. FIGS. 4(G), (B), and 0 are the same 1Q embodiment of the keyswitch unit. The cross-sectional view of Fig. 4 υ) is. Similarly, FIG. 4 is a plan view of a second embodiment of the key switch unit, and FIG. 5 is a block diagram showing an embodiment 91 of the present invention. Figure 6 (5) and proviso) show one terminal structure of a leaf spring contact.
FIG. 2 is a circuit diagram showing an example. Here, 4 is a key switch unit for controlling cursor movement, 6 is a key top s7, 9 is a movement conductor, 8, 1
0ii leaf spring contact, 14 is a brightness control device. Patent applicant: Canon Co., Ltd. No. 1N No. 2N Figure 3 Figure 4 Cause Figure 4, 8Y

Claims (1)

[Claims] 1. A single key top and a first displacement detector arranged to generate different electrical outputs in response to selective vertical depression displacements of the key top to different positions. means and
and second displacement detection means arranged to form different electrical outputs in response to horizontal sliding displacement of the key top, and the two displacement detection means generate output signals for cursor movement. A key switch for controlling cursor movement, characterized in that it outputs an output signal for controlling brightness. 2. The cursor movement according to claim 1, wherein the first displacement detection means outputs an output signal for cursor movement, and the second displacement detection means outputs a full output signal for brightness control. 1ull supine key switch 1. 3. Cursor movement according to claim 1, wherein the first displacement detection means outputs an output signal for brightness control, and the second displacement detection means outputs all output signals for cursor movement. Control key switch. 4. The key switch for controlling cursor movement according to claim 1, characterized in that the key switch is provided outside the keyboard section of the main body of the electronic device via a cable.