JPH10198481A - Data input device, erroneous input preventing method and medium recorded with erroneous input preventing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically learn a double keying preventing function by an algorithm paying attention upon real key operation by ignoring the fetch of current key input when the time interval between the current key input and the last key input measured by a timer means is shorter than dead time. SOLUTION: In a double keying preventing mechanism 23, it is discriminated whether the time interval measured by a timer 24 from the last key input to the current key input exceeds the dead time or not and when the time interval exceeds the dead time, the current key input is accepted. When the time interval does not exceed the dead time and the current key and the last key are not mutually proximate keys, on the other hand, the input key is accepted as a normal input. When the current key is a back space key as a delete key and the time interval from the last key input is lower than a prescribed value, the keying error of operator is judged, updating is performed for extending the dead time and the dead time is extended in the degree of overlapping the key operation errors.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data input device having a plurality of data input keys, an erroneous input prevention method, and a medium recording an erroneous input prevention program.

[0002]

2. Description of the Related Art In recent years, small-sized data processing apparatuses such as personal computers and word processors have been widely spread. In these devices, a keyboard in which a plurality of data input keys are arranged is used as a data input device. Particularly with a small keyboard, except for a user who is familiar with the operation, an adjacent key is often erroneously pressed together with a target key. When the keytop is small, such erroneous input due to double tapping increases.

As a method for preventing such double key presses of keys, the time of key input is measured, and the time interval between two key inputs is shorter than a set time (time over value), and the keys are adjacent to each other. (Japanese Patent Application Laid-Open No. Hei 6 (1994)) has proposed a method of discriminating that the key input has been performed and discarding key input.
-43985). This prior art also considers that the time-over value is dynamically updated in accordance with the degree of mastery, thereby achieving both the function of preventing double keying and the operability.

[0004]

However, in the above prior art, the time-over value updating process focuses only on the key operation speed of the operator. The value gradually decreases, and it cannot be said that it is still sufficient for a learning function. In particular, in the above-described related art, a learning function in a case where an incorrect input is determined in spite of a normal input is not considered.

The present invention has been made in view of the above circumstances, and provides a data input device, an erroneous input prevention method, and an erroneous input prevention method for automatically learning a double keying prevention function using an algorithm focusing on actual key operation. It is intended to provide a medium in which an input prevention program is recorded.

[0006]

According to the present invention, there is provided a data input device comprising: an input device having a plurality of data input keys; and a controller for detecting a key input by the input device and performing code conversion. Timer means for measuring the time interval between the current key input and the previous key input by the input device; and if the time interval between the previous key input measured by the timer means for the current key input is equal to or less than a predetermined dead time. The erroneous input determination means for ignoring the capture of the current key input, and when there is a delete key input for instructing deletion of the key input within a predetermined time from a certain key input, the dead time is increased,
Dead time updating means for dynamically updating the dead time according to the rule that the dead time is reduced when the same key input as the key input determined to be an erroneous input is within a predetermined time. .

In the present invention, preferably, the erroneous input determination means is configured to determine whether the current key input is determined to be equal to or shorter than the dead time and the previous key input only when the two keys are adjacent to each other. Input capture shall be ignored. The present invention is further characterized by further comprising control input means for turning off the double keying prevention function by the timer means, the erroneous input determination means and the dead time updating means.

The present invention further provides a data processing apparatus having an input device having a plurality of data input keys, and a controller for detecting a key input by the input device based on an analog value and performing code conversion.
Timer means for resetting the time every time a predetermined dead time elapses and measuring the time; detecting the presence or absence of a key input at a predetermined threshold value within each dead time measured by the timer means; Key input determining means for temporarily registering the key code together with the detection level, and erroneous input determination for fetching only the key code of the maximum detection level among the key codes temporarily registered for each elapse of the dead time measured by the timer means and ignoring others. Means.

The present invention is also an erroneous input prevention method for preventing erroneous input of key operations of a plurality of data input keys,
Measuring the time interval between the current key input and the previous key input; and capturing the current key input when the time interval between the previous key input measured for the current key input in this step is less than or equal to a predetermined dead time. An erroneous input determination step of ignoring a key input, and when there is a delete key input instructing deletion of the key input within a predetermined time from a certain key input, the dead time is increased, and the same as the key input determined to be erroneous A dead time updating step of dynamically updating the dead time according to a rule that the dead time is reduced when a key input is made within a predetermined time.

[0010] The present invention further provides a medium having recorded thereon a program for preventing erroneous key operation of a plurality of data input keys, comprising the steps of: measuring a time interval between a current key input and a previous key input; An erroneous input determination step of ignoring the capture of the current key input when the time interval from the previous key input measured for the current key input is less than or equal to a predetermined dead time; and A rule that increases the dead time when there is a delete key input for instructing input deletion, and decreases the dead time when the same key input as a key input determined to be erroneous is performed within a predetermined time. And a dead time updating step of dynamically updating the dead time according to the following. There.

According to the present invention, when the time interval between key inputs is equal to or shorter than the predetermined dead time, the data processing apparatus for performing key inputs determines that the key is a double key press and ignores the input of the key inputs. Double keying prevention function can be provided. In the present invention, the dead time, which is a criterion of erroneous input determination by double keying, is dynamically updated by learning, and the learning algorithm is
(A) If there is a deletion key input for instructing deletion of the key input within a predetermined time from a certain key input, the dead time is increased, and (b) the same key input as the key input determined to be erroneous is input. If it is within a predetermined time, the dead time is reduced. That is, (a)
Experientially, considering that users with low proficiency frequently perform delete key operations such as backspace to correct input, dead time is updated according to the degree of such delete key operation. FIG. 3B illustrates updating of the dead time in consideration of a situation in which a high-speed and normal key input by a user with a high level of skill is determined to be an erroneous input by setting the dead time. By adopting such a learning algorithm, according to the present invention, an optimal dead time according to the degree of mastery is dynamically set.

In the present invention, as a method of erroneous input determination, the present key input and the previous key input whose time interval is determined to be equal to or less than the dead time are fetched only when both keys are adjacent to each other. Can be ignored, whereby only an incorrect double-keying by one finger can be reliably determined. Also,
By providing the control input means for turning off the double keying prevention function, a data processing apparatus which can flexibly meet the needs of the user can be obtained.

Further, in the case of a method of detecting a key input by an analog value such as a key pressing force and a key pressing depth, a timer which is reset every time a dead time elapses and measures time is used.
Within each dead time measured by this timer, the presence or absence of a key input is detected at a predetermined threshold, and the detected key code is temporarily registered together with the detection level, and the key registered at each dead time elapses. By performing an erroneous input determination that only the code having the highest detection level is received and the others are ignored, double keying can be effectively prevented.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a block configuration of a data processing device according to one embodiment of the present invention. The data processing device is, for example, a personal computer or a word processor, and includes a keyboard 1 on which a plurality of keys for inputting characters, symbols and the like are arranged, a controller 2 for detecting a key input by the keyboard 1 and converting the code, and a controller 2 And a processing circuit 3 for processing the data that has been code-converted in the step (a).

The controller 2 has a switch sensor 21 for detecting a key input, and an input buffer 22 including a decoder for receiving the detected output and performing data conversion.
Further, the system has a double keying prevention mechanism 23 for monitoring the output of the switch sensor 21 and prohibiting the capture of the key input when double keying is detected. The double keying prevention mechanism 23 includes a timer 24 for measuring a time interval of key input by the keyboard 1, a dead time holding unit 25 for holding a dead time TD which is a reference time for judging an erroneous input by double keying. When the time interval measured by the timer 24 and the dead time TD are compared with each other, and the time interval between the previous key input and the dead time TD is shorter than the dead time TD, the current key input is determined to be an erroneous input and is input to the input buffer 22. Erroneous input determination means 26 for ignoring the capture of the data.

In this embodiment, the erroneous input determination means 26
By referring to the key array data memory 27, in addition to the condition that the time interval is equal to or less than the dead time TD, the condition that consecutively input keys are adjacent to each other is satisfied, so that an erroneous input is determined. I have. The updating unit 28 learns and updates the dead time TD held by the dead time holding unit 25 by a certain algorithm. The function of the double keying prevention mechanism 23 includes the timer 24 (or the timer 2).
4 is realized by software by a CPU (as a separate hardware configuration). The function of the double keying prevention mechanism 23 can be turned on and off as a whole by an external control input (for example, an external control terminal or a specific key input of the keyboard 1).

The operation flow of the double keying prevention mechanism 23 is as shown in FIG. 2, for example. That is, each time a key is input, the timer is first reset (S1), and the presence or absence of a key input is determined (S2). When a key is input, the key code is substituted for the current key KC and the timer value is substituted for T, respectively. (S3) The dead time TD is updated (S4). The algorithm of the dead time learning will be described later. Then, it is determined whether or not the time interval T between the current key KC and the previous key KC0 measured by the timer exceeds the dead time TD (S
5) If YES, input of the current key is accepted (S8). That is, the current key KC is fetched into the input buffer and sent to the internal processing circuit, and is substituted for the previous key KC0. The key KCE which was determined to be incorrectly input immediately before is cleared, and the process returns to step S1. If the time interval T does not exceed the dead time TD (S5), then the current key KC
Then, it is determined whether or not the previous key KC0 is a key that is close to the previous key (S6). If it is the proximity key, the input key is accepted as a normal input (S8). Is used as an erroneous input key KCE, and the process returns to step S1.

Hereinafter, the same operation is repeated for each key input. For two consecutive key inputs, if the time interval is shorter than the dead time TD and the keys are adjacent to each other, it is determined to be a double key press. Capture will be prohibited.

The algorithm of the dead time update step S4 is, for example, as shown in FIG. It is determined whether the current key KC is a backspace (BS) key, which is one of the delete keys (S11). If it is determined that the key is the BS key, then the time interval T from the previous key input is set to the predetermined value T
It is determined whether it is less than L (S12). Accordingly, if the current key is the BS key and the time interval from the previous key input is equal to or less than the predetermined value TL, it is determined that an operator has made a keying mistake, and the dead time TD is added by Δ. Update to increase the size is performed (S13). As a result, learning is performed such that the dead time TD increases as the key operation error increases.

If the current key is not the BS key (S1
1) If the BS key has passed a sufficient time since the previous key (S12), it is determined that there is no error in the key operation by the operator and the dead time TD
Is not updated, and it is next determined whether or not the current key KS is the key KCE determined immediately before as an erroneous input (S14). If YES, it is determined whether the time interval is equal to or less than a predetermined value TL (S15). If this determination is YES, the dead time TD is set to Δ, assuming that the last erroneous input determination is not a mistake of the operator but a result of the dead time TD being too large for an operator who accurately and quickly hits the key. An update is made to reduce the size to a smaller value (S16). The same mistake is repeated if the current key KS is not the key KCE determined immediately before as an erroneous input (S14), or if sufficient time has passed even if the key is determined as an erroneous input (S15). As a result, the dead time TD is not shortened. As a result, learning is performed such that the dead time TD gradually decreases with respect to an accurate and high-speed key input by a skilled operator who is erroneously determined to be an erroneous input.

As described above, in this embodiment, the dead time TD is increased by using the BS key operation under a certain condition to determine an erroneous input by the operator, and the same key operation is repeated under a certain condition. In this case, the operator's proficiency level is determined to be higher than the expected dead time, and the dead time TD is updated to be smaller, thereby preventing double keying. Is automatically updated appropriately according to the degree of mastery. Instead of using the BS key as a criterion or in combination therewith, the erroneous input may be similarly determined by a combination of a cursor movement key and a delete (DEL) key.

Further, in this embodiment, by providing a control input means for turning off the function of the double keying prevention mechanism 23, for example, a game or the like in which it is required to rapidly press a plurality of keys regardless of the presence or absence of an erroneous input. In this case, the double keying prevention function can be turned off, and it can respond to various needs of the user. The same can be achieved by preparing a recording medium such as a disk on which the control program of the double keying prevention mechanism 23 described above is recorded separately from the data processing apparatus main body.

Next, a description will be given of an embodiment in which a key input is detected by an analog value such as a pressing force or a key pressing depth. FIG. 4 is a flowchart of a double keying prevention mechanism by the controller in this embodiment. In this embodiment, the handling of the dead time TD is different from that of the previous embodiment. That is, in the previous embodiment, the timer measures the time interval between the current key input and the previous key input, and makes an erroneous input determination based on whether the time interval is equal to or less than the dead time. In the embodiment, the timer is reset every time the dead time elapses to measure the time, and when there are a plurality of key inputs within each dead time, only one of the key inputs is taken as valid. Erroneous input determination.

More specifically, the flow of FIG. 4 will be described. The timer is reset (S21), the presence or absence of a key input is determined (S22), and if there is a key input, the key code is temporarily registered (S23). . The operations of the key input determination and the temporary registration are repeated until the timer is reset. The key input determining step S22 detects the presence or absence of a key input at a predetermined threshold value, and temporarily registers a key code (S23).
Is performed together with the detection level.

When no key input is detected (S22)
Is measured until the timer value T exceeds a predetermined dead time TD (S24 to S26). During this time, an update step S25 for dynamically learning the dead time TD can be inserted as in the previous embodiment. When it is determined that the timer value T has passed the dead time TD (S26), the key code temporarily registered within the passed dead time TD is taken into the input buffer (S27). At this time, when there are a plurality of temporarily registered key codes, an erroneous input determination is made in which the key code having the largest pressing force is determined as a valid key input and the others are ignored. Then, the temporarily registered key code is cleared (S28), the timer is reset (S21), and the cycle of dead time measurement is repeated in the same manner.

As described above, even in the case of a data processing device that performs key input sensing in an analog system, the dead time TD
In this case, only one key input is treated as valid, thereby preventing double keying. Further, by learning the dead time using the same algorithm as in the previous embodiment, a double keying prevention function according to the skill level can be obtained. Also in the case of this embodiment, it is possible to add a condition for judging that only one key input is valid for a plurality of key inputs detected within the dead time TD on condition that the keys are close to each other.

[0027]

As described above, according to the present invention, when the time interval between key inputs is equal to or shorter than a predetermined dead time, it is determined that the key is a double key press, and the key input is ignored. It is a data input device with a function to prevent double taps,
(A) If there is a deletion key input for instructing deletion of the key input within a predetermined time from a certain key input, the dead time is increased, and (b) the same key input as the key input determined to be erroneous is input. When the time is within a predetermined time, the dead time is reduced by an algorithm that dynamically reduces the algorithm and automatically learns the double keying prevention function, so the double keying prevention function and high-speed input acceptance function , And key input according to the skill level of the operator becomes possible.

[Brief description of the drawings]

FIG. 1 shows a block configuration of a data processing device according to an embodiment of the present invention.

FIG. 2 shows a control flow of the double keying prevention mechanism of the embodiment.

FIG. 3 shows a dead time learning algorithm.

FIG. 4 shows a control flow of a double keying prevention mechanism according to another embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Keyboard, 2 ... Controller, 3 ... Data processor, 21 ... Switch sensor, 22 ... Input buffer, 23
.. Double keying prevention mechanism, 24 timer, 25 dead time holding means, 26 erroneous input determination means, 27 key arrangement data memory, 28 updating means.

Claims (6)

[Claims] 1. A data input device comprising: an input device having a plurality of data input keys; and a controller for detecting a key input by the input device and performing code conversion, the controller comprising: a current key input by the input device; Timer means for measuring the time interval from the previous key input; and ignoring the capture of the current key input when the time interval from the previous key input measured by the timer means for the current key input is shorter than a predetermined dead time. Erroneous input determination means for performing, when there is a delete key input for instructing deletion of the key input within a predetermined time from a certain key input, the dead time is increased, and the same key input as the key input determined to be erroneous input If the dead time is within a predetermined time, the dead time is dynamically adjusted according to the rule that the dead time is reduced. Data input device characterized by having a dead time updating means for updating the click. 2. The erroneous input determining means captures the current key input only when the two keys are adjacent to each other with respect to the current key input and the previous key input whose time interval is determined to be equal to or less than the dead time. The data input device according to claim 1, wherein the data input device is ignored. 3. The data input device according to claim 1, further comprising control input means for turning off a double keying prevention function by said timer means, erroneous input determination means and dead time updating means. 4. A data input device comprising: an input device having a plurality of data input keys; and a controller that detects a key input by the input device based on an analog value and performs code conversion. Timer means for resetting each time and measuring time; detecting the presence or absence of a key input at a predetermined threshold value within each dead time measured by the timer means, and temporarily detecting the detected key code together with the detection level. Key input determination means to be registered, and erroneous input determination means to take in only the key code of the maximum detection level among the key codes temporarily registered each time the dead time measured by the timer means elapses and ignore the others A data input device characterized by the above-mentioned. 5. An erroneous input prevention method for preventing erroneous key operation of a plurality of data input keys, comprising: measuring a time interval between a current key input and a previous key input; An erroneous input determination step of ignoring the capture of the current key input when the time interval between the previous key input and the time measured for the previous key input is shorter than a predetermined dead time; and deleting the key input within a predetermined time from a certain key input The dead time is increased according to the rule that the dead time is increased when a designated key input is made, and the dead time is reduced when the same key input as a key input determined to be an erroneous input is made within a predetermined time. And a dead time updating step of dynamically updating the data. 6. A medium in which a program for preventing erroneous key operation of a plurality of data input keys is recorded, comprising: a step of measuring a time interval between a current key input and a previous key input; An erroneous input determination step of ignoring the capture of the current key input when the time interval from the previous key input measured for the input is less than a predetermined dead time, and deleting the key input within a predetermined time from a certain key input The dead time is increased according to a rule that the dead time is increased when there is a delete key input indicating the key input, and the dead time is reduced when the same key input as the key input determined to be an erroneous input is within a predetermined time. A medium on which a program having a dead time updating step of dynamically updating time is recorded.