JPS59178533A - Keyboard type input device - Google Patents

Abstract

PURPOSE:To obtain a keyboard which has less number of shift keys and is easy to operate, by installing a resetting means which selects and displays the mode of the keyboard in accordance with the depressed time of shift keys and returns the mode to the initial state. CONSTITUTION:At every time when a shift key 1 is depressed, a counter repeates count-up and a decoder 4 outputs mode select signals A, B, C, and D corresponding to the counted value. These signals are inputted into a main control section 5 and inverter buffer 6 and the control section 5 performs processing corresponding to the signals. The buffer 6 lights one LED out of LEDs 7-10 corresponding to the signals and displays the present mode. When a reset key 2 is depressed, the counter 3 is reset and the mode select signal outputted from the decoder 4 is returned to the initial state, and then, the mode processing corresponding section of the main control section 5 is set to the initial state. At the same time, all the LEDs 7-10 are turned off, and thus, next mode switching is ready.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a keyboard-type input device used for data entry into Zenoff dog automation equipment.

[Technical background of the invention]

In modern society, where processing of enormous amounts of information is required, advances in office automation (hereinafter referred to as OA) technology are indispensable. However, in OA technology, most of the data input is performed by the operator by typing on the keyboard, and is a part that relies on human labor. Therefore, streamlining this part will help improve the efficiency of the overall information processing. It has become important.

By the way, the shift key of a conventional keyboard has at most an alternate function, and one key can only be used to switch one mode. Therefore, in order to switch between multiple modes, as many shift keys as there are modes supported by the keyboard are required.

[Problems with background technology]

In recent years, various types of information have been used, and with one key date,
Alphabets, numbers, hiragana, katakana, kanji, etc. can now be input, and the number of shift keys has increased, leading to larger keyboards or more densely packed keys. As a result, the functions of the keyboard have become complicated and the keyboard has become difficult to use for users.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to overcome the above-mentioned drawbacks and provide a keyboard type input device d that has a small number of shift keys and is easy to press.

[Summary of the invention]

The present invention achieves the above object by providing means for switching between multiple modes with one shift key.

[Embodiments of the invention]

Below is Akira's key! An embodiment of the -'- code input device will be described with reference to the drawings. Figure 1 shows the key 7 of the present invention.
FIG. 1 is a configuration diagram showing an embodiment of an IP-type input device.

A shift key 1 and a reset key 2 are connected to a counter 3, which is connected to the input side of a decoder=4. The output side of the decoder 4 is connected to the main control unit 5 and the input one of the inverter buffer 6. The output 118 of this inverter Gunofa 6 is L for display.
ED7~1o are connected, and these LED7~1o
A current is supplied from Ichikawa VCC through a resistor. In addition, the keyboard and main 'ilI!' shown by dotted lines in the figure. A cable 11 is connected to the I (n section 5) for sending four key output signals other than the shift key to the main control section.

Next, the operation of this embodiment will be explained.

This embodiment assumes a case where four modes are switched by the shift key. First, the operator presses the shift key 1 to switch the key date mode. Then, the counter 3 returns the count up by t·■ every time the shift key 1 is pressed. Then, the decoder 4 outputs the counter 30 count value. - modes are selected one after another, and mode select signals A, B, C, and D corresponding to the count value of the counter 3 are output.

These mode select signals A, )], C, and D are scanned by the main control plate section 5 and the inverter buffer 6.

The main control unit 5 of the system performs processing corresponding to the input mode select signal. At the same time, the inverter buffer 6 supplies a current to the LED corresponding to the input mode select signal, lights it up, and displays the current mode. For example, mode select signal A,
B, C, D are modes l, n, III, IV
If compatible, LED7.

8.9.10 also supports these. Therefore, when de'coder 4 outputs mode select No. 41A,
Inverter buffer 6 causes fiLED 7 to light up, indicating whether it is currently the main power source. I] The II combination unit 5 displays that it is performing processing compatible with mode I. Note that when the reset key 2 is pressed, the counter 3 is reset and the mode select signal output from the decoder 4 returns to its initial state, setting the mode processing corresponding section of the main control section 5 to its initial state. , LE'07 to LE'10 are all turned off and ready for the next mode change.

Note that in the above embodiment, when the number of supported modes increases, the shift key 1 must be pressed by the number of modes, which poses a problem in suppressing the speed of processing. Therefore, the above-mentioned inconvenience can be solved by setting the initial state so that when the reset key 2 is pressed, the device returns to the most frequently used mode.

According to this embodiment, when switching modes, the trouble of searching for the shift key 1 is saved, and the number of keys is reduced, making the bead easier to use, thereby improving the usability of the keyboard. can. ′-! Furthermore, since the number of keys is reduced, the keyboard can be made smaller and the manufacturing cost of the keyboard can be reduced. In addition, the reliability of the device can be improved by reducing the number of mechanically moving parts and lowering the failure rate.

FIG. 2 is a block diagram showing another embodiment of the keyboard type input device of the present invention. A shift piece 12 and a reset key 13 are installed on the keyboard indicated by the dotted line in the figure by four dimensions, and LEDs 14 to 17 for indicating mode lights are installed. The output of the keyboard is input to an i4 parallel input output output (PIO) 19 via a cable 18. This PIO 19 is connected to a CPU path 20, which includes a central processing unit (CPU) 2.
1. Firmware memory 22 and 4-bit register 23 in which the system control program is stored.
is connected. Furthermore, this CPU bus, z20Vc&i
A C buffer 25 is mounted on the back via the inverter buffer 24, and the output 1lill of this inverter buffer 25 is connected to the LE
DIs 4 to 17 are connected.

Next, the operation of the main J-mount side will be explained. In this case, as in the previous embodiment, four modes can be switched with the 1 shift key. 'First, the operator presses the shift key 12 to switch the keyboard mode, and the resulting output signal passes through the cable 18 to PIO1.
9 is input.

At PIO19, when you take No. 1E3 from the keyboard,
In order to send the interrupt signal 26 to the CPU'U21, the CPU2
1 reads the signal from the keyboard. At this time, the CPU
21 is based on the firmware of this system stored in the memory 22, when the signal sent from the keyboard is activated when the shift key 12 is pressed 48.
If so, the contents of the 4-bit Renoster 23 are rotationally shifted to the left. 4
In the initial state of bit register = 23, as shown in the figure (0001
is stored, LSBVc 2nd bit, 3rd bit, MS
If the bit is set in H, each mode is set to mode I.
, mode 11 mode Ill, and mode fV shall be delivered. At the same time, the shift key 1 is sent from the CPU 21.
The gate 24 to which the second press signal is output is opened, and the inside of the Renoster 23 is also input to the inverter buffer 25. Then, the inverter buffer 2p operates the LEDs 14 to 17, which are display devices, to light up the LEDs corresponding to the predetermined mode. At this time, there is a one-to-one correspondence between the :1 state of the selected mode and the lit LED. Note that when the reset key 13 is pressed, the CPU 2
1 recognizes this based on the firmware of the memory 22 and sets the contents of the register 23 to 0001 of the initial state j2J. In accordance with the above, this embodiment also has the same effects as 1) the IJ embodiment.

Note that the present invention is applicable to encode type keys, IS-code, and scan tights 0 keyboard ItT2+1', 'i1
J4] i''''It's mud.

〔Effect of the invention〕

As described above, by providing a means for switching between 22 keyboard modes using one shift key, the keyboard can be used by reducing the number of shift keys and 22 keyboard modes. You can feel the effect of making it easier.

17ji of the 4 drawings;
Figure 2 shows another embodiment of the keypad input device C2 of the present invention.

1.12...Shift key, 2,1.3...Receno (
key, 3... counter, 4... decoder, 5...
... King ffj control ff1L 6.25... Inverter buffer, 7~i4°14~17... LED, 1
9...PIO121...CPU.

22...Firmware-memory, 23...Register, 24...r-).

Claims (3)

[Claims] (1) In a key gate type input device in which a key bead mode is switched by pressing a shift key, means for selecting a key dart mode corresponding to the number of presses of a shift key, means for displaying the selected mode, and a mode. A keyboard type input device characterized by comprising a reset means for returning the to an initial state. (2) A patent characterized in that a means for selecting a key dart mode is provided with a counter that counts up to 0 when the shift key is pressed, and a decoder that selects and outputs the corresponding mode based on the count value of the counter. A key-type input device according to claim 1. (3) When υ is reset by the reset means,
2. The keyboard type input device according to claim 1, wherein the keyboard input device returns to the most frequently used mode as an initial state.