JPH05216570A - Erroneous input processor - Google Patents

Abstract

PURPOSE:To make an erroneous input key invalid when erroneously depressing the adjacent keys together with the required key. CONSTITUTION:A CPU 5 senses that a keyboard 1 is pressed, and measures the input interval between keys by starting a timer 6. When keys are pressed in a short time, the key to be judged as an erroneous input is made invalid, and the only correct key is inputted. The key is stored in a ROM 3 to be displayed on a display device 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key input device for office automation equipment using computers such as word processors, personal computers, and office computers.

[0002]

2. Description of the Related Art FIG. 5 shows a flowchart of conventional key input. In this figure, when the key input determination process starts, a one-character key input wait state (S2
1), the CPU determines whether or not there is a key input in S21 (S22). Here, if there is no key input (N
o), return to S21 and continue to wait for key input. On the other hand, if there is a key input (Yes), the code of the input key is returned to the main routine.

That is, in the conventional routine for key input from the keyboard, the code of the pressed key is simply transmitted to the main routine.

[0004]

If a person who has not improved the key input from the keyboard performs OA processing using a computer such as a word processor, a personal computer, or an office computer, the key top of the desired key cannot be accurately hit. , I pressed the adjacent keys together. At this time, if the code of the pressed key is simply transmitted to the main routine,
Not only the desired key but also the adjacent key is input, and the input must be corrected thereafter.

Not only is such an input correcting operation very troublesome for the operator, but also the key input processing takes time and the efficiency of the OA processing becomes poor.

[0006]

The present invention has been made for the purpose of solving the above problems, and the invention according to claim 1 is
The erroneous input processing device detects a key press and measures the input interval time between the input of the first key and the input of the second key; Comparing means for comparing with a reference value which is the time of the key input interval, and position detecting means for detecting the positional relationship between the first key and the second key in response to the comparison result of the comparing means, According to the positional relationship between the first key and the second key by the position detecting means, it is determined that the key input of the first key or the second key is an erroneous input, and the input of the key is invalidated. A key determining means is further provided, and the key determining means is further provided.
In the invention described, the reference value can be changed according to the operator.

[0007]

According to the present invention, by detecting the pressing of a key, the measuring means measures the time of the input interval between the input of the first key and the input of the second key, and the comparing means measures the measured time and the general time. If the measurement time is shorter than the reference value, it may be an erroneous input, so the position detection means uses the first key and the second key. If the position of the first key and the second key are not the same and the positions are adjacent to each other, the first key or the second key is detected according to the positional relationship. It is determined that the key is an erroneous input key, the input of that key is invalidated, and only the key code of the desired key is transmitted to the main routine.

[0008]

1 is a front view of a general keyboard, and FIG.
FIG. 3 is a circuit block diagram of the erroneous input processing device of the present invention, and FIGS. 3 and 4 are flowcharts of key input by the erroneous input processing device of the present invention.

If a person who has not improved the key input from the keyboard performs OA processing using a computer such as a word processor, a personal computer, or an office computer, he or she cannot accurately hit the key top of a desired key, and the adjacent keys are put together. Then, not only the desired key but also the adjacent key is input.

In the present invention, the above-mentioned erroneous input is processed according to the following law by the form of the keyboard. Figure 1
As shown in Fig. 2, there are two types of keyboards, one is a step sculture type that has a shape in which the keyboard is tilted low as it approaches from the back to the front when viewed from the operator ((2) in Fig. 1), and the height of the keyboard is There is a flat type ((3) in FIG. 1) that is a completely flat surface.

In the case of the flat type keyboard of FIG. 1C, the input result when the adjacent key (position B) is pressed together while trying to input the desired key (position A) is, for example, , “Kuma” and “Kuna”, and the erroneous input key (position B) is often input after the desired key (position A). This is because one wants to input the desired key, so pressing the adjacent keys together will still press the desired key to the main. Also, since the keyboard is flat, all keys are in the same condition, and there is the possibility of pressing any of the six adjacent keys.

In the case of the step culture type keyboard of (2) in FIG. 1, since the keyboard is inclined low from the back to the front, the way of erroneous input differs depending on the position of the adjacent key. If the position of the adjacent key is the position B, it can be considered as in the case of the planar type. On the other hand, if the position of the adjacent key is the position of C which is on the back side of the desired key (position A), the key that the erroneous input key (position C) is desired, such as "nku" or "null". It is considered that it is often input before (position A).

It is considered that this is because the depth of the keyboard is higher, so that when the user desires to press the desired key (position A), the finger first presses the key (position C) adjacent to the higher position. And the adjacent key (position B) at or below the desired key (position A)
Then, it is considered that the key is pressed after the desired key.

That is, the patterns for processing erroneous input according to the present invention are: In the planar type, when the desired key (position A) is pressed and the adjacent keys (position B) are pressed together, the input sequence is the desired key and the adjacent key. 2. In the step culture type, the input sequence is the desired key (position A), the adjacent key (position B) or the adjacent key (position C), the desired key (position A).
Becomes

In the circuit block diagram of FIG. 2, a keyboard 1 is an input device for inputting characters and the like, and a display device 2 is a CRT or LCD for displaying input contents. The ROM 3 is a storage device that stores the input contents,
Various programs are stored in the AM4. CPU
A central processing unit 5 controls all the devices. Further, the timer 6 measures the time between the keys and the input interval of the keys.

According to the present invention, the CPU 5 is the keyboard 1
When the key is pressed, the timer 6 is started to measure the time between key input, and if the key is pressed within a short time, one of the keys is invalidated and it is considered correct. Enter only the keys that can be used. Then, the key is stored in the ROM 3 and displayed on the display device 2.

The operation of the erroneous input processing device according to the present invention will be described below with reference to the flowcharts of FIGS. 2 and 3.

When the key input determination process is started, the CPU 5 first resets the timer 6 to start the timer 6 in order to measure the time of the key input interval (S1). At this time, the accuracy of the timer 6 can be measured up to a unit of 1/100 second. When preparation for time measurement of the key input interval is completed, one character key input is awaited (S2) and key input is continued. And CP
U5 determines whether or not there is a key input in S2 (S5).
3). If there is no key input (No), the process returns to S2 and continues to wait for key input. On the other hand, if there is a key input (Y
es), stop the timer 6 and hold the value of the timer 6. Further, the key code obtained in S2 is temporarily held as "Y" (S4).

The key code "Y" obtained in S2
In order to determine whether the input is correct, the CPU 5 determines whether the value of the timer 6 is smaller than the value of To (S).
5). The value of this To is empirically measured for the time of the key input interval when the key is erroneously pressed.
It is held by U5. Since the value of this To has individual differences, the operator can change it. Generally, 0.1 seconds is a standard.

If the value of the timer 6 is smaller than the value of To in S5 (Yes), the same key may be pressed twice in succession, or the key code "Y" obtained in S2 may be erroneous input. Therefore, first, in order to shift to the process of determining whether the same key has been pressed twice consecutively, the process proceeds to S6. In S6, it is determined whether or not the key code "X" input last time and the key code "Y" input this time are the same key code (S
6). If "X" and "Y" are not the same key code (Yes), the key code "Y" obtained in S2.
Since there is still a possibility that the key is erroneously input, the process proceeds to S7 to check the positional relationship between the keys. In S7, it is determined whether the position of the key code "X" is the position of A and the position of the key code "Y" is the position of B (S7). Here, if the position of the key code "Y" is the position of B (Yes
s), the key code "Y" input for the reason described in FIG. 1 is determined to be an erroneous input, and the process returns to S1.

As described above, in this case, regardless of the type of keyboard, whether it is the step scull type or the flat type, the factors that are judged to be erroneous inputs are: (1) The time between the keys and the key press is very short. Short. (2) The positional relationship between the successively input keys is the adjacent position (position B). Therefore, in this case, the key input later is determined to be an erroneous input key.

On the other hand, in S5 and S6, it is judged No, that is, when the key input interval time is sufficiently long, or when the key input interval time is very short because the same key is pressed continuously. If it is, it is determined that the key code "Y" is a correct input, the routine proceeds to S17, the key code input in S2 is held as "Y" to "X", and "X" is the key code. Is returned to the main routine (S17).

In S7, if the position of the key code "Y" is not the position of B (No), it is determined whether or not the key code "Y" obtained in S2 is the correct input by the operating keyboard. Type or step culture type. Therefore, the routine proceeds to S8, and the shape of the keyboard is determined. In S8, CPU5
Determines whether the keyboard being operated is the step culture type, and if it is not the step culture type (No), that is, the plane type, S2
Since the obtained key code "Y" is not adjacent to the previously obtained key code "X", there is no possibility of erroneous input, and the key input in S2 is judged to be correct key input, and S17 The process proceeds to step S2 and holds the key code input in S2 as "X" from "Y" and returns "X" as a key code to the main routine (S17).

On the other hand, if the operated keyboard is a step culture type keyboard, the key code "Y" obtained in S2 is considered to be an erroneous input at the C position, so that the next key input is waited for. Then, the timer 6 is reset and the timer 6 is started (S
9). Then, the system waits for one-character key input (S1
0), the CPU 5 determines whether or not there is a key input in S10 (S11). Here, if there is a key input (Yes
s), stop the timer 6 and hold the value of the timer 6. Further, the key code obtained in S10 is temporarily held as "Z" (S12).

Then, the key code "Y" obtained in S2
In step S13, the position of the key code "Z" is set to the position of A, and the key code "Y"
It is determined whether the position of is the position of C (S13). If the position of the key code "Y" is the position of C (Ye
s), the key code "Y" is determined to be an erroneous input key due to the key code "Y" being pressed together with the key code "Z", and the CPU 5 invalidates the key code "Y".

As described above, the factors that are judged to be erroneous inputs in this case are (1) the shape of the keyboard is the step-sculture type. (2) The time between keys is very short. (3) The positional relationship between the continuously input keys is the adjacent position (position C). Therefore, in this case, the key previously input is determined to be an erroneous input key.

Then, the key code "Z" is transferred to the key code "Y", and the process proceeds to the routine, where the process is to determine whether the new key code "Y" is an erroneous input, as described above.

On the other hand, in S11, if there is no key input (No), the process proceeds to S15, waits the value of the timer 6 by the value of To, and if there is no next key input after the value of To is exceeded (No). , There is no possibility that the key code “Y” is an incorrect input at position C, the timer 6 is stopped, and it is determined that the key code “Y” is a correct input,
The key code input in S2 is retained as "Y" to "X", and "X" is returned to the main routine as a key code (S17).

[0029]

According to the present invention, in order to invalidate a key input which is considered to be an erroneous input key when adjacent keys are pressed together, the time between key inputs is measured and the measured time is used as a reference. When the value is smaller than the value, the positional relationship of the keys is detected, and if the positions of the keys are not the same and are adjacent to each other, the key that is judged as an erroneous input is invalidated and only the key code of the desired key is transmitted to the main routine. It is a thing.

Therefore, the erroneous input due to the pressing of the adjacent key which could occur conventionally is eliminated, the correction work of the input becomes unnecessary, the efficiency of the key input is improved, and the efficiency of the OA processing can be achieved.

[Brief description of drawings]

FIG. 1 is a front view of a general keyboard.

FIG. 2 is a circuit block diagram of an erroneous input processing device according to the present invention.

FIG. 3 is a flowchart of key input by the erroneous input processing device of the present invention.

FIG. 4 is a flowchart of key input by the erroneous input processing device of the present invention.

FIG. 5 is a flowchart of conventional key input.

[Explanation of symbols]

 1 keyboard 2 display device 3 ROM 4 RAM 5 CPU 6 timer

Claims (2)

[Claims] 1. A measuring means for sensing the pressing of a key to measure the time of the input interval between the input of the first key and the input of the second key, and the measurement result of the measuring means and a general key. Comparing means for comparing with a reference value which is the time of the input interval, in response to the comparison result of the comparing means, position detecting means for detecting the positional relationship between the first key and the second key, A key that determines that the key input of the first key or the second key is an erroneous input and invalidates the key input according to the positional relationship between the first key and the second key by the position detection means. An erroneous input processing device comprising: a determination unit. 2. The erroneous input processing device according to claim 1, wherein the reference value can be changed according to an operator.