JP2001159945A - System and method for inputting character - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten input time by reducing the number of times of key depression when inputting a character from a ten-keyboard. SOLUTION: Kana character strings from the 'a-line' to the 'wa-line' in Japanese syllabary are allocated to numerical keys 0-9 on the ten-keyboard 1 and the depression of each numerical key is detected by a key input detection circuit. A central control part 3 refers to a Kana character ROM 4, selects and displays a character whose vowel of the corresponding line is in the 'u- column' as a home position, and when the number of times of depressing a selection switch 5 arranged independently of the ten-keyboard 1 is detected by a counter 6, selects and displays a character whose vowel is in the 'i-column' by executing up-one operation, a character whose vowel is in the 'a-column' by executing two up-operations, a character whose vowel is in the 'e-column' by executing one down-operation, and a character whose vowel is in the 'o- column' by executing two down-operations. When a required character is displayed, the character is defined by a definition key formed on the ten-keyboard 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a character input method and a character input method, and more particularly to a character input method and a character input method in an information processing apparatus not equipped with a full keyboard.

[0002]

2. Description of the Related Art Conventionally, in an information processing apparatus not equipped with a full keyboard, character input is generally performed using a numeric keyboard.

Japanese Patent Application Laid-Open No. 58-72234 discloses an example of inputting characters using this numeric keyboard.
There is a key input method disclosed in Japanese Unexamined Patent Application Publication No. HEI 9-86. The key input method of this publication is a numeric keypad of numeric keys 0-9.
Are assigned to the line (0), the line (1), the line (2), and the line (9), and the column characters (a → i → u → e → For example, (→ → → → → → →) is determined by how many times the numeric key is pressed. For example, when inputting "U", press the 0 key (line) three times, and when inputting "ko", press the 1 key (line) five times. I have. In addition,
In addition to the above publication, a similar character input method is disclosed in, for example, a mobile phone described in Japanese Patent Application Laid-Open No. 10-13523.

In the method of determining a character string by pressing the same numeric key several times as described above, it is not possible to go back if the key is accidentally pressed too much. It was necessary to do it again.

[0005]

However, the above-mentioned prior art has the following problems.

The first problem is that the number of times the key is pressed at the time of inputting a kana character is one to five times in accordance with the column character of each row. This means that the user has to press the key five times and the character input takes time.

A second problem is that a key must be depressed a plurality of times in succession when selecting a column character on each line. If the key is depressed by mistake at this time, it is not possible to go back and it is necessary to input again. It will be.

An object of the present invention is to provide a character input method and a character input method that solve the above problems.

[0009]

A first character input method according to the present invention is a character input method using a numeric keyboard in an information processing apparatus not provided with a full keyboard. A kana character string from “A line” to “Wa line” is assigned corresponding to the key (0 to 9), and when any of the numeric keys is pressed, the character in the column where the vowel of the corresponding line is “U” As the home position,
Display, and then one up operation with a separately provided selection switch causes the character in the row with the vowel "I" to be displayed twice and the character in the row with the vowel "A" by one up operation to perform one down operation The character in the column with the vowel "E" is selected and displayed by two down operations, and the character in the column with the vowel "O" is selected and displayed. When the desired character is displayed, the confirmation provided on the numeric keypad is performed. Characters are determined by keys.

A second character input method according to the present invention is the same as the first character input method according to the present invention, wherein a vowel is assigned a column number corresponding to a character in a column of "A" to "O", and an initial value is set. Is the column number of the home position (the character of the column with the vowel "U"). The number of up / down operations of the selection switch is counted. If the number is up, the number is added to the current column number, and In the case of, the operation of subtracting the number of times from the current column number is performed, the character of the column corresponding to the calculated new column number is selected and displayed, and the column number is changed when the enter key is pressed. It is characterized by resetting to the initial value.

In a third character input method according to the present invention, in the first or second character input method according to the present invention, the up / down operation of the selection switch is performed by inputting the next character from the determination of the character by the enter key. Until the numeric key is depressed, the operation is performed for moving the cursor display (forward / backward) for correcting the already determined character.

A fourth character input method according to the present invention is a character input method using a ten-key keyboard in an information processing apparatus not provided with a full keyboard, and switches between a numeric input mode and a kana character input mode. Key and
A numeric keyboard including numeric keys (0 to 9) to which kana character strings from “A row” to “Wa row” are assigned corresponding to the respective keys, and a determination key for determining a character; A key input detection circuit for monitoring a pressed state of a key provided and detecting key depression and outputting key information; and a selection switch for outputting an up signal / down signal by performing an up / down operation, respectively. , The up signal / down signal is counted and the number of times of up /
The counter that outputs the number of times of down, each numeric key and the character string of "A line" to "Wa line" are associated with each other, and the character of the column of vowel "U" of each line is set as the home position, and the vowel of each line is A kana character storage unit that stores the characters of the columns “A” to “O” in association with the column numbers that are the numbers of the respective columns, and presses the switching key from the key input detection circuit and presses the number. The key information of the key press is received, the character in the column of the home position in the row corresponding to the numeric key is selected by referring to the kana character storage unit, and displayed on the display unit, and thereafter, the character is displayed from the counter. The number of times / down number is received, and when the number is up, the number is added to the column number of the home position, and when the number is down, the number is subtracted from the column number of the home position. A center character for selecting a character in a column corresponding to the calculated new column number and displaying it on the display unit, and resetting the column number to the column number of the home position when the enter key is pressed. It has a control part and a display part which displays the character selected by the central control part.

According to a fifth character input method of the present invention, in the fourth character input method of the present invention, the up / down operation of the selection switch is performed by pressing the enter key to determine the next character input. Therefore, the central control unit further includes means for controlling the operation of moving the cursor display (forward / backward) for correcting the already determined character until the numeric key is pressed. It is characterized by.

According to a sixth character input method of the present invention, in the fourth character input method of the present invention, the selection switch is a seesaw switch capable of pressing a switch in two directions, up and down.

According to a seventh character input method of the present invention, in the fourth character input method of the present invention, the selection switch comprises two independent switches, an up operation switch and a down operation switch. It is characterized by.

An eighth character input method according to the present invention is a character input method using a numeric keypad in an information processing apparatus not provided with a full keyboard, wherein each numeric key (0 to 9) of the numeric keypad is used. When one of the numeric keys is depressed, an alphabet located in the middle of the corresponding three characters is selected and displayed as a home position, and then, one character is selected by a separately provided selection switch. The leading alphabet of the three characters is selected and displayed by one up operation, and the last alphabet of the three characters is selected and displayed by one down operation. When a desired alphabet is displayed, a confirmation provided on the numeric keyboard is displayed. Characters are determined by keys.

A first character input method according to the present invention is a character input method using a ten-key keyboard in an information processing apparatus not provided with a full keyboard. Pressing one of the numeric keys (0 to 9) of the numeric keypad assigned to each key corresponding to a column, and when any of the numeric keys is pressed, the vowel of the corresponding row is "U" And the step of selecting and displaying the characters in the row as the home position, and the character in the row where the vowel is "I" by one up operation using a separately provided selection switch, and the vowel in the row "A" by the two up operations A step of selecting and displaying the characters in the column by one down operation and the characters in the column with the vowel "o" by two down operations; and Displayed A step of deciding a character by a decision key provided on the numeric keyboard; and a step of deciding the character by depressing the decision key until the numeric key is depressed for the next character input. 5 up / down operations to move the cursor display for correcting already determined characters (forward /
Retreating).

A second character input method according to the present invention is a character input method using a ten-key keyboard in an information processing apparatus having no full keyboard, wherein three letters of the alphabet are assigned to each key. Pressing any one of the numeric keys (0 to 9) of the numeric keyboard; and pressing one of the numeric keys,
The step of selecting and displaying the alphabet located in the middle of the corresponding three characters as the home position, and the one-time up operation by a separately provided selection switch causes the alphabet to be displayed.
The alphabet at the beginning of the character is selected by one down operation, and the alphabet at the end of the three characters is selected.
Displaying, when a desired alphabet is displayed, a step of determining a character by a determination key provided on the numeric keypad, and pressing the determination key to determine a character and then pressing the numeric key for inputting the next character. Until is pressed, the selection switch 5 is turned up /
Operating the down operation as a movement (forward / backward) of a cursor display for correcting a character already determined.

[0019]

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

FIG. 1 is a block diagram showing the configuration of the first embodiment of the present invention. Referring to FIG. 1, the numeric keyboard 1 is connected via a scan signal line 10 and a return signal line 11 to a key input detection circuit 2 for recognizing the presence or absence of a key input. The selection switch 5 includes an up signal line 12 for sending a signal when pressed upward and a down signal line 13 for sending a signal when pressed downward.
And a counter 6 for detecting the number of times the button is pressed
It is connected to the. The central control unit 3 takes in the kana character line data from the key input detection circuit 2 and the kana character column data from the counter 6 and reads the corresponding kana data from the kana character ROM 4 storing the kana character data. , The display of kana characters on the display 7 is collectively managed. The central control unit 3 sends a signal to the key input detection circuit 2, and the key input detection circuit 2 sends a scan signal to the scan signal line 10 periodically, and initializes the column data. Is sent to the counter 6 via the reset signal line 14.

FIG. 2 shows a numeric keyboard 1 according to the present invention.
It is a figure showing an example of. Each line of kana characters is assigned to each of the numeric keys “0” to “9”. For example, "0" means A line (Aioe), "1" means
The line (Kakikukeko) is assigned. Also,"*"
Has a function to switch between numbers and kana characters.
“#” Has a function of determining the kana character displayed on the display 7.

FIG. 3 is a diagram showing an example of the configuration of the selection switch 5 in the present invention, and shows an example of a seesaw switch capable of pressing the switch in two directions, up and down. The selection switch 5 has a terminal 15 connected to the ground (0 V) at the center, a terminal 16 for sending a down signal to the down signal line 13 in FIG. 1 when it is in the down position, and a terminal 16 in the up position. Terminal 17 for sending an up signal to the up signal line 12 in FIG.
Are arranged.

FIG. 4 shows a kana character ROM 4 according to the present invention.
It is a figure showing a list of a kana character matrix. When one of the numeric keys is pressed, the character in the column with the vowel "U" in the corresponding row is selected as the home position. A character in the row with the vowel "A" by the up operation twice, a character in the row with the vowel "E" by the down operation once, and a character in the row with the vowel "O" by the two down operations It is arranged to select.

FIG. 5 is a flowchart showing the operation of the embodiment of the present invention.

Next, the operation of the first embodiment of the present invention will be described in detail with reference to FIGS.

The key detection circuit 2 scans whether or not a key is pressed on the numeric keyboard 1 (step S1 in FIG. 5). Is pressed once, the key input detection circuit 2 receives a signal via the return signal line 11 and confirms that the "*" key has been pressed. The central control unit 3 is detected and notified to that effect (step S2).

Following step S2, the key input detection circuit 2
Performs a key scan (step S3). The operator
When a key (one of the keys 0 to 9) of a corresponding kana character line is pressed to display a kana character, a signal is sent from the numeric keyboard 1 to the key input detection circuit 2 via the return signal line 11, The key input detection circuit 2 detects which key has been pressed, and notifies the central control unit 3 of a corresponding signal (step S4).

In step S4, the central control unit 3 having received the signal from the key input detection circuit 2 reads the line data of the corresponding kana character from the kana character ROM 4 if the signal is the key of the kana character line, It is displayed on the display 7. See FIG. 4 for reading the row data. The kana character line is selected according to the type of the pressed numeric key. At this time, since the selection switch 5 has not been pressed yet, the column character at the home position of each row shown in FIG. 4 is selected and displayed. For example, when the operator presses the "0" key, "U" is displayed on the display 7 (step S5).

The operator checks whether the kana character displayed in step S5 is the character of the line to be displayed. If not, the key of the desired kana character line is pressed again (step S6).

In step S6, if the displayed kana character is the character of the line to be displayed, then the operator moves the selection switch 5 up or down to select the kana character to be displayed.

The operation of the selection switch 5 will be described with reference to FIG. The selection switch 5 is normally at the home position, and to raise it, pressing the right side of the selection switch 5 makes the terminals 15 and 17 conductive, and the up signal line becomes valid. Select switch 5 to bring down
By pressing the left side of, the terminals 16 and 17 become conductive, and the down signal line becomes effective. When it is raised, it becomes the up position shown in FIG. 3, and when it is down, it becomes the down position shown in FIG. Is sent to the counter 6 via the down signal line 13 (step S
7).

The counter 6 counts the number of up signals or down signals sent via the up signal line 12 or the down signal line 13, and notifies the central control unit 3 of up / down number data (step S).
8).

The central control unit 3 receives the data of the number of times of up / down from the counter 6 and receives the kana character R shown in FIG.
The column data is read from the OM 4 and displayed on the display 7. In the central control unit 3, as shown in FIG. 4, the home position is set to the column number 3, and the column number to be selected by adding / subtracting the up / down number data sent from the counter 6 to the column number 3 is selected. decide. For example, when the up / down count data is not received from the counter 6, the character of the column number 3 (the column where the vowel is "U") is selected,
When the number of times of up is 2 times, the character of column number 5 (column with vowel "A") is selected by 3 + 2 = 5.

Next, the operator confirms whether kana characters displayed on the display 7 are sufficient. If the character string is not correct, the process returns to step S7, and the selection switch 5 is turned up / down again to select a correct kana character.
At this time, for example, if the currently displayed kana character is a character whose vowel is in the column of "A" and wants to correct it to a character whose vowel is in the column of "E", the selection switch 5 is lowered three times. The central control unit 3 counts down three times from the counter 6.
Received data, and since the current column number is 5 (the vowel is "A"), the calculation of 5-3 = 2 is performed and the character of the column number 2 (the vowel is "E") Is selected and displayed (step S10).

As a result of the confirmation in step S10, if the displayed kana character is acceptable, the operator presses the "#" key in FIG. 2 to determine the kana character.

As a result of the key scan (step S11), the key input detection circuit 2 detects whether the pressed key is the "#" key and notifies the central control unit 3 of a corresponding signal (step S12).

When the central control unit 3 receives the "#" key press signal from the key input detection circuit 2, it sends a reset signal to the counter 6 via the reset signal line 14 to reset the count information of the counter 6. A next input wait state is set (step S13).

Thereafter, as a result of the key scan by the key input detection circuit 2 (step S14), if a key of a kana character line is detected, the process returns to step S4 to input the next character. Further, when detecting the "*" key for ending the kana character input, the key input detection circuit 2 notifies the central control unit 3 and the central control unit 3 ends the kana character input control (step S15). .

Next, a second embodiment of the present invention will be described with reference to FIGS.

FIG. 6 shows the alphabet R in the present invention.
It is a figure showing the list of the alphabet matrix of OM18.
In the second embodiment of the present invention, the kana character ROM 4 of FIG. 1 used in the first embodiment of the present invention described above is used.
The alphabet ROM 18 shown in FIG. 6 is used, and the same operation as in the first embodiment is performed even when an alphabet is input.

In the conventional method of assigning an alphabet to a numeric key and displaying it, the desired alphabet is not displayed unless the numeric key is pressed the required number of times, and if the key is pressed incorrectly during successive presses, re-entry is required. There is a point. In the conventional method, after the column A is displayed in a row, A
In this embodiment, for column 0 times, column B once, and column C twice, in this embodiment, column B is displayed in rows, then column A once, column B 0 times, C
One row. Therefore, as the number of inputs in the column C increases, the input time can be shortened, and the correction can be easily performed by operating the selection switch 5. Therefore, there is an effect that it is possible to respond flexibly without changing the hardware related to the input only by changing or adding the character ROM.

In this embodiment, whether the “*” key in FIG. 2 in the first embodiment is a numeric / alphabetic key, a separate numeric / alphabetic key is provided, or “*” in FIG. It is assumed that any one of the alphabet input switching keys such as a numeric / kana / alphabet key is used.

Next, a third embodiment of the present invention will be described with reference to FIGS.

FIG. 7 is a diagram for explaining the forward / backward function of the selection switch 5 in the present invention. In the third embodiment of the present invention, the selection switch 5 of FIG. 1 used in the first and second embodiments of the present invention further has a forward / backward function (cursor moving function on a display). It was made.

In the conventional input method, correction after character determination is performed by assigning a forward / backward function to a key on the numeric keyboard 1 and performing an operation of switching the key function each time, or performing another forward / backward operation. It was necessary to have a dedicated key for In the present embodiment, the central control unit 3 monitors the period from the character determination by pressing the “#” key of the numeric keyboard 1 to the next pressing of the numeric key of the numeric keyboard 1, and the selection switch 5 during that time. The up / down operation is assigned to forward / backward movement.

For example, after the character is determined by pressing the "#" key of the numeric keypad 1, if it is desired to correct the character which was determined immediately before, the selection switch 5 is operated once to move the cursor display backward one position. . Then, the user presses a new numeric key to enter an input character selection operation. At the time when the new numeric key is pressed, the central control unit 3 operates the selection switch 5
Is switched from forward / backward to column character selection of each row, subsequent character selection can be performed as described in the first and second embodiments of the present invention. According to the present embodiment, it is possible to obtain a new effect that a fixed character can be corrected without performing a switching operation of a key function each time a correction is made or providing another dedicated key.

In the first to third embodiments described above, the characteristic portions of the present invention have been described in close-up.
Operations such as lower case selection, voiced / semi-voiced sound selection, and kanji conversion are well known, and the description in this embodiment is omitted. However, it is of course possible to combine these functions with the present embodiment.

Further, the selection switch has an up / down 2
Although a seesaw switch capable of pressing the switch in the direction has been described as an example, an up operation switch and a down operation switch may be separately provided. further,
A selection switch may be provided in the numeric keyboard,
It may be provided separately from the numeric keyboard.

[0049]

According to the present invention, the home position of the kana character string of each line by pressing the numeric key is set in the column of the vowel "U", and the character of the column is changed by up / down operation of a selection switch provided separately from the numeric keyboard. Because the selection is made, the home position of the kana character string is placed in the column with the vowel "A" as in the past, and the number of key operations at the time of inputting the kana character is reduced as compared with the method of pressing the numeric key 1 to 5 times. This has the effect of shortening the input time.

Also, in the conventional method, when the character is corrected due to the excessive pressing of the numeric key, the character cannot be reversed, so that the character is re-entered. However, according to the present invention, the number of up / down operations of the selection switch is managed by the counter. There is also an effect that a new character string can be re-entered only by turning up / down the selection switch without re-inputting.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a first exemplary embodiment of the present invention.

FIG. 2 is a diagram showing an example of a numeric keyboard 1 according to the present invention.

FIG. 3 is a diagram showing a configuration example of a selection switch 5 according to the present invention.

FIG. 4 is a diagram showing a list of a kana character matrix in a kana character ROM 4 according to the present invention.

FIG. 5 is a flowchart showing the operation of the embodiment of the present invention.

FIG. 6 is a diagram showing a list of alphabet matrices in an alphabet ROM 18 according to the present invention.

FIG. 7 is a diagram for explaining a forward / backward function of the selection switch 5 in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Numeric keyboard 2 Key input detection circuit 3 Central control unit 4 Kana character ROM 5 Selection switch 6 Counter 7 Display 10 Scan signal line 11 Return signal line 12 Up signal line 13 Down signal line 14 Reset signal line 15, 16, 17 Terminal 18 Alphabet ROM

Claims (10)

[Claims] 1. A character input method using a numeric keypad in an information processing apparatus not provided with a full keyboard, wherein a character string is entered from “A line” corresponding to each numeric key (0 to 9) of the numeric keypad. When the kana character string of "wa line" is assigned and one of the numeric keys is pressed, the character of the column whose vowel is "u" in the corresponding line is selected and displayed as the home position, and then the selection provided separately The character in the column with the vowel "i" is obtained by one up operation with the switch, the character in the column with the vowel "a" is obtained by the two up operations, and the character in the column with the vowel "e" is obtained by one down operation. Characters are selected and displayed in a row with a vowel "O" by two down operations, and when a desired character is displayed, the character is determined by a determination key provided on the numeric keyboard. Sentence Input method. 2. A vowel is assigned a column number corresponding to a character in a column of "A" to "O", and an initial value is set as a column number of the home position (a character in a column of "U" vowel). The number of times the selector switch is turned up and down is counted. If the number is up, the number is added to the current column number. If the number is down, the number is subtracted from the current column number. 2. The character input method according to claim 1, wherein characters in a column corresponding to a new column number are selected and displayed, and the column number is reset to the initial value when the enter key is pressed. 3. An up / down operation of the selection switch is performed to correct an already determined character from when the character is determined by the determination key until the numeric key is pressed for the next character input. 3. The character input method according to claim 1, wherein the character input method is operated for moving a cursor display (forward / backward). 4. A character input method using a numeric keypad in an information processing apparatus not provided with a full keyboard, wherein a switching key for switching between a numeric input mode and a kana character input mode is provided. Numeric keys (0-9) to which the character string from "A line" to "Wa line" is assigned
A numeric keypad provided with a determination key for determining a character; a key input detection circuit for monitoring a pressing state of a key provided on the numeric keyboard, detecting key pressing and outputting key information; A selection switch that outputs an up signal / down signal by performing an up / down operation, a counter that counts the up signal / down signal and outputs the number of times of up / down, respectively, To the kana character string of "wa row" and the character of the column of vowel "u" of each row as the home position, and the characters of the column of vowels "a" to "o" of each row and the column number of each column And a kana character storage unit that stores the key information in association with each other, and receives key information of the press of the switching key and the press of the numeric key from the key input detection circuit, The character in the column of the home position in the row corresponding to the numeric key is selected with reference to the kana character storage unit and displayed on the display unit. Thereafter, the number of times of up / down is received from the counter, and When the number is down, the number is added to the column number of the home position, and when down, the number is subtracted from the column number of the home position, and the character of the column corresponding to the calculated new column number is selected. A central control unit for displaying on the display unit and resetting the column number to the column number of the home position when the enter key is pressed; and a display unit for displaying a character selected by the central control unit. And a character input method. 5. An up / down operation of the selection switch is performed for a character which has already been determined until the character key is pressed by pressing the determination key and the numeric key is pressed for the next character input. 5. The central control unit according to claim 4, further comprising means for controlling operation of the cursor display for movement (forward / backward) for correction.
The described character input method. 6. The up / down 2 selector switch.
5. The character input method according to claim 4, wherein the switch is a seesaw switch capable of pressing a switch in a direction. 7. The character input method according to claim 4, wherein said selection switch comprises two independent switches of an up operation switch and a down operation switch. 8. A character input method using a numeric keypad in an information processing apparatus not provided with a full keyboard, wherein three alphabetical characters corresponding to respective numeric keys (0 to 9) of the numeric keypad are used. When any one of the numeric keys is pressed, the alphabet located in the middle of the corresponding three characters is selected and displayed as a home position, and then the three characters are up-set by a single up operation using a separately provided selection switch. The first alphabet is 1
A character input method, wherein the last alphabet of the three characters is selected and displayed by a number of down operations, and when a desired alphabet is displayed, a character is determined by a determination key provided on the numeric keyboard. 9. A character input method using a numeric keyboard in an information processing apparatus not provided with a full keyboard, wherein a character string from “A line” to “Wa line” is assigned to each key. Pressing any one of the numeric keys (0 to 9) of the numeric keypad; and selecting any of the characters in the column where the vowel of the corresponding row is "U" when any one of the numeric keys is pressed. , A display step, and one up operation by a separately provided selection switch causes a character in a row with a vowel "i" to be displayed twice and a character in a row with a vowel "a" to be downed by one up operation. A step of selecting and displaying a character in a row whose vowel is "E" by an operation and a character in a row of a vowel "O" by two down operations; and displaying the desired character on the numeric keypad when a desired character is displayed. And confirming the character with the pressed confirmation key. Up / down of the selection switch 5 from the confirmation of the character by pressing the confirmation key to the depression of the numeric key for the next character input. Operating the operation to move (forward / backward) a cursor display for correcting a character that has already been determined. 10. A character input method using a numeric keypad in an information processing apparatus not provided with a full keyboard, wherein each numeral key (0) of the numeric keypad is assigned three alphabetical characters corresponding to each key. To 9), when any one of the numeric keys is pressed, a step of selecting and displaying an alphabet located in the middle of the corresponding three characters as a home position, and A step of selecting and displaying the first alphabet of the three characters by one up operation and the last alphabet of the three characters by one down operation; and providing the ten keyboard when a desired alphabet is displayed. Confirming a character by using the confirmed confirmation key; During the period from the confirmation of the character by pressing to the depression of the numeric key for the next character input, the up / down operation of the selection switch 5 is performed by moving the cursor display for correcting the already confirmed character. Operating the device for use (forward / backward).