JP2002091671A - Method for recognizing depressed key - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower the probability of performing canceling operation for canceling an unnecessary key code later and to facilitate canceling operation. SOLUTION: Priority orders corresponding to the character of an operator, the degree of the skill of the operator, the contents of inputting operation are set to some of the keys of an input device 13. A key code assigned to a depressed key is set to be the first temporary recognition key code. When a key code assigned to a key depressed next is not equal to the first temporary recognition key code, the key code is set to be the second temporary recognition key code. Then, in accordance with the priority orders, one of the first or second temporary recognition key codes is selected as a correct recognition key code, which is transmitted to a device main body 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recognizing a pressed key.

[0002]

2. Description of the Related Art Conventionally, input devices such as personal computers, word processors, cash registers, electronic desk calculators, mobile phones, PADs, ATMs of financial institutions, vending machines, and other keyboards, touch panels, and selection button devices have been used. When a button of the device or a touch frame of a panel, that is, a key is pressed or touched by an operator, that is, when a key is pressed, generally,
A personal computer that is a device main body of the input device, recognizing a key code assigned to a pressed key by an input detection unit of the input device;
The data is transmitted to an arithmetic unit (CPU or MPU) such as a word processor, cash register, electronic desk calculator, mobile phone, PAD, ATM of a financial institution, vending machine, and the like.

FIG. 2 is a flowchart showing the operation of a conventional input device for recognizing a key code and transmitting the key code to the device main body 12. Step S51: To detect whether any key of the input device is pressed by the operator.
If any key is not pressed, step S5
Returning to step 1, the process proceeds to step S52 when pressed. Step S52: Recognize the key code assigned to the pressed key. Step S53 fixed time (5-10
[Ms]) Wait. Step S54 Re-recognize the key code assigned to the pressed key. Step S55: It is determined whether the key code recognized in step S52 is the same as the key code recognized in step S54. If they are the same, step S
The process proceeds to 56, and if not identical, returns to step S51.
Step S56: The recognized key code is set as a correct recognition key code. Step S57: Transmit the correct recognition key code to the apparatus body 12, and return to step S51.

Here, the reason why the key code once recognized after waiting for a predetermined time is re-recognized is that the input detection means does not recognize the wrong press by the operator as the correct press. In order to Therefore, the certain time is usually the minimum time that the operator will keep pressing if he or she intentionally presses it.

As described above, when the operator presses the key indicating the letter A on the keyboard of the personal computer, for example, the input detection means of the keyboard changes the key code corresponding to the letter A to the personal computer. Send to computer. The personal computer receives the key code, recognizes that the letter A has been input, and executes processing such as displaying the letter A on the screen.

However, when the key size is small or the operator is unfamiliar, the operator erroneously presses a plurality of keys at the same time, that is, multiple presses are performed, and a plurality of key codes are generated. May be transmitted to the device body. In this case, a cancel operation for canceling the unnecessary key code later is required.

[0007] Here, the multiple pressing is generally caused by a slight shift in the position of the operator's finger and the pressing of the key. It can be seen that a plurality of keys are not pressed at the same time, but a time lag of about several tens [ms] occurs after the first key is pressed until the next key is pressed.

FIG. 3 is a flowchart showing the operation of the conventional input device when multiple presses are performed and a plurality of key codes are transmitted to the device main body. Here, the same steps as those in the flowchart shown in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted. Step S57 In this case, the processing of steps S51 to S56 is completed after the first key is pressed until the next key is pressed, and the key code assigned to the first key is transmitted to the apparatus main body 12. Step S58: It is determined whether or not any key of the input device has been pressed by the operator. If any key has not been pressed, the process returns to step S51, and if it has been pressed, the process proceeds to step S59. Step S59: Recognize the key code assigned to the pressed key. Step S60: Stand by for a fixed time (about 5 to 10 ms). Step S61
Next, the key code assigned to the pressed key is recognized again. Step S62 It is determined whether or not the key code recognized in step S59 is the same as the key code recognized in step S61. When they are the same, the process proceeds to step S63, and when they are not the same, the process returns to step S51. Step S63: The recognized key code is set as a correct recognition key code. Step S64: Transmit the correct recognition key code to the apparatus main body, and return to step S51.

[0009] In this case, for example, the operator performs multiple presses to simultaneously press the key indicated by the letter A and the key indicated by the letter S on the keyboard of the personal computer. If the key indicated by the letter S is depressed several tens [ms] after the key indicated by the letter A is depressed, the input detection means of the keyboard will After transmitting the corresponding key code to the personal computer, the key code corresponding to the letter S is transmitted to the personal computer. Then, the personal computer receives the key code, recognizes that the alphabet A and the alphabet S have been input, and executes processing such as displaying the alphabet A and the alphabet S on the screen. . In this case, the operator needs to perform a canceling operation for canceling the alphabetical letter A and / or the alphabetical letter S input by the multiple pressing. However, the cancellation operation is complicated and takes a long time, so that the efficiency of the input operation is significantly reduced depending on the operator.

For this reason, in the input device, priorities are set in advance for all keys, and when multiple presses as described above are performed, the priorities set for the respective keys are compared. A key code assigned to a key having a higher priority is transmitted to the apparatus main body.

[0011] With this, even if the operator erroneously performs multiple presses, only the key code assigned to the higher priority key is transmitted to the apparatus main body, so that unnecessary key codes can be canceled later. The probability of performing the canceling operation is reduced (see Japanese Patent Application Laid-Open No. 7-287631).

[0012]

However, in the conventional input device, priorities are set for all keys in advance, and the priorities are set in accordance with the personality, skill, and input work contents of the operator. Since the order setting cannot be changed, only the unnecessary key codes are transmitted to the apparatus main body 12 without transmitting the necessary key codes to the apparatus main body, and it is necessary to frequently perform the canceling operation.

When priorities are set in advance for all keys, priorities may be set in alphabetical order or alphabetical order. In general, priorities are set in descending order of frequency of use. You. In this case, even if the operator presses the key multiple times by mistake, only the key code assigned to the key with the higher frequency of use is transmitted to the device main body, so that the unnecessary key code is canceled later. Is less likely to be performed.

However, the frequency of use of the keys changes according to the contents of the input operation. For example, the frequency of key use differs between the task of entering English text and the task of entering Japanese text. The frequency is different. Therefore, even if the priorities are set in descending order of the frequency of use, it is not possible to change the settings of the priorities. The probability of performing is rather high.

Further, the position of a key which is erroneously depressed by multiple presses also changes depending on the personality, skill, etc. of the operator. For example, depending on whether the operator is right-handed or left-handed, the position of the key that is erroneously pressed differs depending on the right or left side of the key that should be pressed. In the case of an operator performing an input operation with both hands, the position of the key that is erroneously pressed by the right half and the left half of the input device differs depending on whether the key is to be pressed right or left. .

The present invention solves the above-mentioned conventional problems,
The priority order can be changed according to the operator's personality, skill level, input work content, etc., and the probability of performing the cancellation work to cancel unnecessary key codes later is low, and
It is an object of the present invention to provide a pressed key recognition method capable of easily performing a canceling operation.

[0017]

For this purpose, in the pressed key recognition method of the present invention, priority is given to some of the keys of the input device according to the personality of the operator, the skill of the operator, the input work content, and the like. When the order is set, the key code assigned to the pressed key is set as the first temporary recognition key code, and the key code assigned to the next pressed key is not the same as the first temporary recognition key code. The key code is used as a second temporary recognition key code, and one of the first and second temporary recognition key codes is selected as a correct recognition key code in accordance with the priority order. Send to the device body.

[0018]

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

FIG. 1 is a diagram showing an example of a method of setting priorities for keys of an input device according to an embodiment of the present invention, and FIG. 4 is a flowchart showing an operation of a pressed key recognition method according to an embodiment of the present invention. .

In the figure, 14 is an information processing device,
A display device 11 composed of a CRT, a liquid crystal display or the like, a computing device (CPU or MPU), a storage device such as a memory and a magnetic disk, a device main body 12 as an upper device having an input / output interface and the like, and an input device 13 such as a keyboard. Have.

Here, the information processing device 14 includes a large computer such as a host computer and a general-purpose server, a personal computer, a word processor, a cash register, an electronic desk calculator, a mobile phone, a PAD,
Any form of electronic voucher, ATM of a financial institution, vending machine such as a ticket, a game machine, etc. may be used.

The display device 11, the device main body 12, and the input device 13 may be formed integrally or partially independently, or may be formed, for example, as a touch panel. The input device 13 and the input device 13 may be integrated, and may be in any form.

Further, the input device 13 may be of any form such as a keyboard, a touch panel including a liquid crystal display and the like, a selection button device, and the like.
That is, the key arrangement may be in any form.
That is, whether it is composed of only numeric keys (numeric keys), composed of only alphabetic keys, or composed of only function keys, it is provided with some of these. There may be.

Here, in a desktop personal computer (desktop personal computer) in which the display device 11, the device body 12, and the input device 13 are independently formed, a general so-called input device 13 is used. A 106 keyboard will be described as an example.

Here, the input means 13 is provided as shown in FIG.
Has various keys arranged as shown in FIG. 1, that is, character keys 21, function keys, control keys, special function keys 22, cursor keys, numeric keys 23, and the like. Reference numeral 21a denotes a left-hand input key pressed by the left hand of the character keys 21, and 21b denotes a right-hand input key pressed by the right hand of the character keys 21. A key code is assigned to each of the various keys in advance.

Further, the input means 13 has an input detecting means (not shown). The input detecting means includes a small arithmetic device (CPU or MPU), a memory such as a buffer memory, an input / output interface, and the like, recognizes a key code assigned to a pressed key, and inputs the key code to the input device. The device body 12 which is the device body 12 of the device 13
To be sent to.

Even if the operator erroneously presses a plurality of keys at the same time, the key codes assigned to the keys having the higher priority are transmitted to the apparatus main body 12 and unnecessary key keys are transmitted. Some keys of the input device 13 are prioritized in order to avoid having to perform a cancellation operation for canceling the code later.

Here, the setting of the priority order can be changed as appropriate in accordance with the personality, skill level, input work content and the like of the operator. For example, depending on whether the operator is right-handed or left-handed, the position of a key that is erroneously pressed differs depending on whether the key is to be pressed right or left next to the key to be pressed, and the input operation is performed with both hands. In the case of the operator, the position of the key that is erroneously pressed differs depending on the right half and the left half of the input device 13 depending on whether the key is to be pressed right or left. Also, for example, the key usage frequency differs between the case of inputting English sentences and the case of inputting Japanese sentences. Use frequency is different.

Therefore, what priority is set for which key or key group, for which key or key group, or for which key or key group is arranged. The operator can make appropriate changes in consideration of personality, skill, input work content, and the like.

Further, it is possible to set so that an alarm is notified or a key operation is invalidated when multiple presses are performed. For example, if a special function key 22 such as a "delete" key or an "insert" key is pressed by mistake, a serious result will occur. It is desirable that the operator be prompted to confirm without transmitting to the apparatus main body 12, and the key operation is performed again after the operator confirms.

For example, in the case of the numeric keypad 23, even if the numeric keypad 23 is depressed erroneously, a serious result is not produced. It will be higher,
When multiple presses are performed, it is desirable to invalidate all key operations.

Then, for example, like a cursor key,
If the probability that multiple presses are performed is extremely low, or if it is extremely easy to cancel unnecessary key codes later even if multiple presses are performed, it is not necessary to set priorities, so It is not necessary to set priorities. If it is not necessary, it is not necessary to set an alarm to be notified or a key operation to be invalidated.

The above-described setting of the priority order is stored in the memory of the input detecting means, and the arithmetic unit of the input detecting means, when recognizing the key code assigned to the pressed key, reads the memory. And recognizes the key code in accordance with the settings described above. Also, settings for notifying an alarm or disabling a key operation are similarly stored in the memory, and the arithmetic means reports an alarm or disables a key operation in accordance with these settings. Or

In this embodiment, priorities are set assuming that the operator inputs Japanese characters in Roman characters using both hands, and alarms are notified and key operations are disabled. An example is shown in FIG.

For example, the left-hand input key 21 of the character key 21
In a, since the left-hand input key 21a is pressed with the left hand, it is considered that there is a high probability that the key to the left of the key that should be pressed is erroneously pressed. That is, in most cases, it can be said that the position of the key that is erroneously depressed due to multiple presses is on the left of the key that should be depressed. Therefore, the priority is set to the key on the right. In this case, priorities may be set in advance from the right side to all the keys included in the left-hand input key 21a in advance, or when multiple presses are performed, the right side among a plurality of pressed keys may be set. The priority order may be set for the key located at each time.

On the other hand, the right-hand input key 21b of the character key 21
In this case, since the right-hand input key 21b is pressed with the right hand, it can be said that, in most cases, the position of the key that is erroneously pressed by multiple pressing is right next to the key that should be pressed. Therefore, the priority is set to the key on the left. Also in this case, the priority order may be set in advance from the left side to all the keys included in the right hand input key 21b, or when multiple presses are performed, The priority order may be set for the key located on the left side each time.

The "delete" key and the "inse
If the special function key 22 such as the “rt” key is pressed by mistake, a serious result occurs. Therefore, when multiple presses are performed, a key code corresponding to any key is transmitted to the apparatus main body 12. An alarm is set so that the operator is urged to confirm without performing the operation, and after the confirmation is performed by the operator, the key operation is performed again. In this case, the alarm may be, for example, an alarm in which a red lamp or the like flashes on the display device 11, or a sound such as a whistle generated from a speaker or the like.

Further, in the case of the numeric keypad 23, even if it is erroneously depressed, a serious result does not occur. However, it is difficult to recognize a wrong number input later. Therefore, when multiple presses are performed, it is set so that all key operations are invalidated.

The priorities of the other keys are set because the probability of multiple presses is extremely low, or even if multiple presses are performed, it is extremely easy to cancel unnecessary key codes later. Not done. Also, there is no need to make settings so that an alarm is notified or key operations are invalidated.

Next, the operation of the input device 13 in the present embodiment for recognizing a key code and transmitting it to the device main body 12 will be described.

As shown in FIG. 4, when the operator presses any key, the input detecting means determines which key has been pressed and recognizes the key code assigned to the key.

Next, the input detecting means operates for a predetermined time (5
After waiting, the key code assigned to the pressed key is recognized again. Here, it is determined whether the re-recognized key code is the same as the first-recognized key code. If the key code is the same, the key code is stored in the memory of the input detecting means as a first temporarily recognized key code. I do. The key code may be re-recognized two or more times and determined to be the same if it is determined that the key code is the same.

Here, the key code recognized once after waiting for a predetermined time is re-recognized because the input detection means recognizes an incorrect press by the operator as a correct press. This is to prevent it.
Therefore, the certain time is usually the minimum time that the operator will keep pressing if the operator consciously presses it, and the setting can be changed as appropriate.

Subsequently, the input detecting means determines whether any key is pressed, and recognizes a key code assigned to the key. Then, it is determined whether the key code is the same as the first temporary recognition key code,
If they are the same, the input detection means determines that the operator has pressed the key consciously and without error, and sends the first temporary recognition key code to the apparatus main body 12 as a correct recognition key code. Send.

On the other hand, this is a case where the operator performs, for example, multiple presses for simultaneously pressing the key indicating the letter A and the key indicating the letter S, and the letter A is indicated. When the key indicated by the letter S is pressed several tens [ms] after the pressed key is pressed, the key code (corresponding to the letter S) assigned to the key is changed to the first key. It is determined that it is not the same as the temporary recognition key code (corresponding to the letter A).

Note that multiple presses are generally caused by a slight shift in the position of the operator's finger and depressing a key. Keys are not pressed at the same time,
It can be seen that a time lag of about several tens [ms] occurs after the first key is pressed until the next key is pressed. This time lag is extremely short as compared with the time lag when a normal key is continuously pressed. Therefore, after the first temporary recognition key code is stored in the memory of the input detection means, the time required to detect whether or not the next key is pressed is several tens to hundreds [ms].
It is desirable to set to about.

When it is determined that the keys are not the same, the input detecting means waits for a predetermined time (about 5 to 10 ms), and then the key code (corresponding to the letter S in the alphabet) assigned to the pressed key. ). If the re-recognized key code is the same as the previously recognized key code (corresponding to the letter S in the alphabet), it is stored in the memory of the input detection means as a second temporarily recognized key code.

Subsequently, the calculating means of the input detecting means accesses the memory and judges the priority set in advance by the operator. Then, among the first and second temporary recognition key codes, a temporary recognition key code assigned to a key having a higher priority is selected as a normal recognition key code and transmitted to the apparatus body 12.

According to the example of setting the priority shown in FIG. 1B, the key indicated by the letter A and the key indicated by the letter S are included in the left-hand input key 21a. The priority is set to the key on the right.
Therefore, in this case, the second provisional recognition key code corresponding to the letter S is selected as the correct recognition key code and transmitted to the apparatus body 12.

As described above, in the present embodiment, even if the operator erroneously performs the multiple presses, only the key code assigned to the key having the higher priority is transmitted to the apparatus main body 12, so that the unnecessary operation is performed. The probability of performing a cancellation operation for canceling a key code later is reduced. In addition, since the setting of the priority order can be changed in accordance with the personality, skill, input work content, and the like of the operator, the probability of performing a canceling operation for canceling an unnecessary key code later is extremely low.

Further, when multiple presses are performed, an alarm can be notified or a key operation can be invalidated, so that the operator can notice an erroneous operation before a serious result occurs. Correction work and cancellation work can be performed quickly.

Next, a flow chart showing the operation of the pressed key recognition method according to the present embodiment will be described. Step S1 It is determined whether or not any key of the input means 13 has been pressed. If pressed, step S2
If not, the process returns to step S1. Step S2 Recognize the key code assigned to the pressed key. Step S3: Stand by for a fixed time. Step S4 Re-recognize the key code assigned to the pressed key. In step S5, it is determined whether the key code recognized in step S2 and the key code re-recognized in step S4 are the same. If they are the same, proceed to step S6,
If they are not the same, the process returns to step S1. Step S6 The key code re-recognized in step S4 is stored in the memory as a first provisionally recognized key code. Step S7: It is determined whether any key of the input means 13 has been pressed. If pressed, step S8
If not, the process returns to step S1. Step S8 Recognize the key code assigned to the pressed key. Step S9 It is determined whether or not the key code recognized in step S8 is the same as the first provisionally recognized key code. If they are the same, the process proceeds to step S10, and if they are not the same, the process proceeds to step S12. Step S10: The first temporary recognition key code is set as a normal recognition key code. Step S11: Transmit the correct recognition key code to the apparatus main body 12. Step S12: Stand by for a fixed time. Step S13: The key code assigned to the pressed key is recognized again. Step S14: It is determined whether the key code recognized in step S8 and the key code re-recognized in step S13 are the same. When they are the same, the process proceeds to step S15, and when they are not the same, the process returns to step S1. Step S15 The key code re-recognized in step S13 is stored in the memory as a second temporarily recognized key code. Step S16: The temporary recognition key code assigned to the higher priority key is selected from the first and second temporary recognition key codes as the normal recognition key code. Step S17: Transmit the correct recognition key code to the apparatus main body 12.

It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified based on the gist of the present invention, and they are not excluded from the scope of the present invention.

[0054]

As described above in detail, according to the present invention, in the method of recognizing a pressed key, some of the keys of the input device include the personality of the operator, the skill of the operator, the contents of the input work, and the like. Is set as the first temporary recognition key code, and the key code assigned to the next pressed key is the first temporary recognition key code. If not, the key code is used as a second temporary recognition key code, and one of the first and second temporary recognition key codes is selected as a correct recognition key code according to the priority order. Then, the correct recognition key code is transmitted to the apparatus main body.

In this case, even if the operator performs multiple presses by mistake, only the key code assigned to the higher priority key is transmitted to the apparatus main body, so that unnecessary key codes can be canceled later. The probability of performing a cancellation operation is reduced. Moreover, since the priority order can be changed according to the operator's personality, skill level, input work content, etc.,
The probability of performing a cancellation operation for canceling an unnecessary key code later is extremely low.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an example of a method of setting a priority order for a key of an input device according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating an operation of a conventional input device for recognizing a key code and transmitting the key code to a device main body.

FIG. 3 is a flowchart showing an operation of the conventional input device when multiple presses are performed and a plurality of key codes are transmitted to the device main body.

FIG. 4 is a flowchart illustrating an operation of a pressed key recognition method according to the embodiment of the present invention.

[Explanation of symbols]

 12 Device body 13 Input device

Claims (1)

[Claims] 1. (a) Some of the keys of the input device are set with priorities according to the personality of the operator, the skill of the operator, the contents of input work, etc., and (b) assigned to the pressed key The obtained key code as a first provisionally recognized key code, and (c)
If the key code assigned to the next pressed key is not the same as the first temporary recognition key code, the key code is used as the second temporary recognition key code, and (d) the first temporary recognition key code is assigned according to the priority order. And (e) transmitting the correct recognition key code to the apparatus main body by selecting any of the first and second temporary recognition key codes as the correct recognition key code.