KR920009756B1 - Character input method using limited keys - Google Patents

Abstract

The method is for inputting various characters of which number exceeds that of keys in a device of a limited key number. The method employs a key inputter (10) composed of keys (K1-K2), an alarm generator (20), a memory (30) for storing character data, and a microprocessor (40) for storing the character data into the memory (30) and generating alarm signal when key is mal- manipulated.

Description

Character input method using a limited number of keys

1 is a conventional block diagram.

2 is a block diagram to which the present invention is applied.

3 is a flow chart according to the present invention.

* Explanation of symbols for the main parts of the drawings

10: key input unit 20: CPU

30: warning sound generating unit 40: memory unit

The present invention relates to a character input method using a limited number of keys, and more particularly, to a method of inputting a character by maximizing a key in an apparatus and a device having a limited number of keys.

In general, when entering various characters such as ASCII (American Standard Code for Information Interchange) characters in terminals, such as facsimile and multifunction telephones, each key should have a corresponding key.

FIG. 1 is a conventional block diagram, which comprises a key input unit 1, a matrix integrated circuit (IC) 2, and a central processing unit (CPU) 3. As shown in FIG.

In a system having a key input unit 1 in which the keys for inputting the letters AZ are arranged as shown in FIG. 1 in the configuration of FIG. 1, when a specific key is pressed, a point corresponding to the pressed point is determined by a matrix IC. It detects in (2) and informs CPU3.

Therefore, the CPU reads it and recognizes the currently entered character.

As described above, the conventional key input method requires the same number of keys as characters to be input and requires a matrix IC to detect them.

Accordingly, an object of the present invention is to provide a method for inputting a larger number of various characters than the number of keys in an equipment and a device in which the number of keys is limited.

In order to achieve the above object, the present invention provides a first process of inputting the number of key inputs into the number of rows and columns, converting the character data into character data according to the number of rows and columns, and storing the number of key inputs in the range of number of rows and columns. When it exits, it emits a warning sound, and the third step of inputting the character string as the number of key inputs as the number of rows and columns.

2 is a block diagram to which the present invention is applied, and includes a key input unit 10 including keys K1-K2 for inputting a predetermined character, and an alarm sound generator 20 for generating an alarm sound by inputting an alarm sound generation signal. And a memory unit 30 for storing character data, a key input received from the key input unit 10 to read the input character, and store the recognized character data in the memory unit 30 to perform key operation. If it is wrong, it consists of a CPU 40 which outputs a warning sound generation signal.

3 is a flow chart according to the present invention.

Hereinafter, an embodiment of FIG. 3 according to the present invention will be described in detail with reference to FIG. 2. First, determine the ASCII characters needed and construct them in a two-dimensional array. In this case, for example, when configuring the English letter “A-Z”, the characters are arranged as shown in the character table shown in Table 1 below.

TABLE 1

The same characters as in Table 1 above are input to the CPU 40 of FIG. 2 in a combination of rows and columns.

That is, if the key K1 in Fig. 2 is called a key for inputting the number of rows and columns, and the key for determining the number of rows and columns for which the key K2 is input, "G" is shown in Table 1 as CPU ( To enter 40), press the key K1 twice and then press the key K2 to confirm the number of columns.

When the key (K1-K2) is operated to input the character as described above, in step (11) of FIG. 3, the CPU 40 determines whether the character input is completed. Proceed to step 12).

In step (12), the number of keys K1 is pressed is read as the number of rows. If the key K2 is pressed, the number of rows read is determined and the process proceeds to step (13). It is determined whether the number of rows input in the step (13) is out of range. That is, since the number of rows is 6, for example in Table 1, if the number of input rows is 6 or less, it is determined that the range is not out of step (14). In step (14), the number of key K1 is pressed is read as the number of columns. If the key K2 is pressed, the number of rows read is determined and the process proceeds to step (15).

In step 14, it is determined whether the number of columns input is out of range. That is, for example, in the example of Table 1, since the number of columns is 5, if the number of input columns is 5 or less, it is determined that the range is not out of step (16).

If the number of rows input in step (13) is out of range, the process proceeds to step (18). If the number of columns input in step (15) is out of range, the process proceeds to step (18).

In step 18, the alarm sound generating signal is output to cause the alarm sound generating unit 20 to generate a warning sound indicating that the number of input rows or columns is out of range. Repeat.

The character data is converted into character data according to the number of rows and columns input in step (16), and the process proceeds to step (17) to store the converted character data in the memory unit 30.

After storing the character data in step (17), looping to step (11) is repeated to input a desired character string.

As described above, two keys K1 and K2 may be used to input more characters than the number of keys.

Meanwhile, as another embodiment of the present invention, a character may be input by using a Ten key generally provided in a telephone or the like. In other words, the number of rows and columns is selected as the number of ten keys. In this case, the ten key means a key of 0-9 required when dialing, for example, a telephone.

As described above, the present invention is a device and apparatus in which the number of keys is limited, and as a method of inputting various characters by making the most of a limited number of keys, a large number of various characters can be inputted with only a few keys. There is an advantage.

In addition, since it is not necessary to increase the number of keys in order to input a large number of characters, cost reduction and appearance can be simplified.

Claims (1)

A device and apparatus having a limited number of keys, comprising: inputting the number of key inputs in a table arranged in predetermined rows and columns as the number of rows and columns, and converting and storing the character data according to the number of rows and columns. Step 1, beep when the number of keystrokes is out of the range of number of rows and columns, and again the second step of inputting the number of keystrokes as the number of rows and columns, and the string as the number of rows and columns until the character input is completed. Character input method utilizing a limited number of keys, characterized in that consisting of a third process for inputting.

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