KR20050026112A - Character input system and the operating method - Google Patents

Abstract

A text input system and a method for operating the same are provided to display only corresponding characters on the buttons by using 3-color LEDs according to a selected input mode so that users can easily recognize and input characters. A text input system is comprised of a control part(100), a memory part(130), an input part(110), a display part(140), and an LED driving part(120). The LED driving part(120) is composed of 3-color LEDs and 3-color filters. Based on a Hangul/English/figure mode selection signal, the LED driving part(120) drives an associated LED and displays only associated characters on the buttons. The memory part(130) stores LED color information, based on the Hangul/English/figure modes. The control part(100) receives a mode selection signal inputted through the input part(110) from the user and changes the display of the LED buttons according to the selected mode.

Description

Character input system and the operating method

The present invention relates to a character input system and a method of operating the same, and more particularly to a character input system and a method for operating the character input system to increase the user's character recognition by changing the display of the button according to the input mode of the keypad in the character input system of the mobile communication terminal It is about.

The mobile communication terminal is provided with a voice call service for connecting a call in response to a call request and response between a caller and a receiver through a mobile communication system.

In addition, such a mobile communication terminal is provided with various data communication services as well as voice call service with the development of digital technology. As a representative technology of data communication, a short message service which is a function for transmitting and receiving text information in a mobile communication terminal ( SMS: Short Message Service).

In order to provide such a short message service, a keypad of a mobile communication terminal includes key buttons each arranged with a first to fourth numerals, Korean consonants / vowels, and English alphabets to help users input numbers and characters. .

The terminal user selects a character mode corresponding to a character to be input in the character input mode and forms a sentence to be expressed by selecting a key having the corresponding character in the character input mode.

1 is an exemplary view showing a keypad of a mobile communication terminal according to a conventional character input method, wherein each mobile communication terminal changes a character arrangement of each key according to a character input method set in the terminal.

Basically, the keypad of the mobile terminal displays Korean / English / numeric characters together on one button.

Referring to FIG. 1, the Korean vowels are arranged on the 1,2,3 keys in the manner of Cheonjiin (·, ㅣ, ㅡ), the Hangul consonants are arranged on the remaining keys, and the English alphabet is Q, Z on the 1st key. Located and the rest are arranged with cheonjiin and Hangul vowels on each key sequentially.

When you need to enter text, you can switch to Korean / numeric / English / English / symbol mode by pressing the Mode button. In each mode, you must find and press the button that has the text you need.

For example, when a user wants to input 'ㄱ', the user should switch to the Korean mode using the mode button and find and select the '4' key button printed with 'ㄱ'.

However, since a plurality of characters of Korean / English / numbers are printed together on one button as described above, the user has a problem in that it is difficult to find a key button on which a desired character is printed.

In addition, the conventional keypad configuration has a slight difference in the number of strings to be displayed on each key according to the character input method, but due to the number, the English alphabet, Hangul / vowels have a minimum first to fifth character arrangement, Since the size of each key provided in the keypad provided in the terminal is limited according to the miniaturization of the terminal, in order to display all character strings, the size of the character is relatively small.

Accordingly, there is a problem that a user may have difficulty in finding a character to be input among character strings arranged on each key in the character input process until the character array configured in the keypad of the terminal is known.

In other words, when inputting Korean characters by the conventional method, the arrangement structure of the characters matched to each button of the keypad is complicated, which may confuse the character recognition until the user becomes accustomed to the keyboard structure. There is a problem.

According to the present invention, in order to input a character configured on the keypad, the user can easily recognize the character by displaying only the characters that can be input in the corresponding mode by displaying them in different colors using three-color LEDs when selecting a mode. The purpose is to provide a system and its operation method.

In order to achieve the above object, a character input system according to the present invention includes: a keypad including a plurality of Korean / English / numeric characters in one button; And an LED driver for displaying the corresponding letter on the button by driving the LED of each button according to the Korean / English / numeric mode in the keypad.

The keypad has a three-color LED and a three-color LED filter under each button.

The button is cut in Korean / English / numbers, characterized in that the character is displayed by the LED light.

LED color according to the Hangul / English / numeric mode is characterized in that the different.

In addition, in order to achieve the above object, the operation method of the character input system according to the present invention comprises the steps of selecting the Hangul / English / numeric mode; Driving an LED when one of the Hangul / English / numeric modes is selected; When the LED is driven, the step of inputting a character is displayed on the button of the keypad; characterized in that it comprises a.

Each button of the keypad is cut in Korean / English / numerals, characterized in that the letter is displayed by the LED light of the lower.

LED color according to the Hangul / English / numeric mode is characterized in that the different.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a character input system according to the present invention.

Referring to FIG. 2, the character input system according to the present invention includes a control unit 100, a memory unit 130, an input unit 110, a screen display unit 140, and an LED driver 120.

The LED driver 120 is composed of a three-color LED (red, blue, green) and three-color filter (red pass filter, blue pass filter, green pass filter), each according to the Hangul / English / numeric mode selection signal The LEDs are driven to drive the LEDs to display characters on the button for the mode.

Here, the LED driver 120 is provided under each button of the keypad, and the LED color for each character input mode is determined so that the LED emits light according to the selected mode and passes through the filter so that only the corresponding characters are displayed. Is displayed on the button.

The memory unit 130 stores the character string input and edited by the user and the LED color information according to the Korean / English / numeric mode.

The input unit 110 generates key data input by a user using a keypad to perform a predetermined command, that is, a mode selection signal and a character selection signal, to control the entire character input system of the mobile communication terminal.

The screen display unit 140 displays a character string that is input / edited according to a key signal input by the user through a display such as a liquid crystal provided in the mobile communication terminal.

The controller 100 collectively controls the memory unit 130, the input unit 110, the screen display unit 140, and the LED driver 120, and receives and selects a user's key signal input through the input unit 110. It handles all the operations such as changing the display of the LED button or entering, editing, saving, and deleting characters according to the mode.

Looking at the operation of the character input system having the above configuration as follows.

First, when a user needs to input text such as a text message, the user selects one of Korean / English / numeric mode in the text input state.

Then, the mode signal selected by the user through the input unit 110 is input to the controller 100, and the controller 100 emits the keypad through the LED driver 120 according to the selected mode.

For example, when the user selects the Hangul mode, the blue LED is emitted from the LED driver 120 to display only the characters of the current mode by the three-color filter.

This is because the color of the LED is stored in the memory according to the mode, so only the filter passes through the three color filters, so other characters that cannot be entered are hidden from the user.

That is, in the character input system according to the present invention, when the user selects a character mode for character input, only the character of the current mode is displayed on the button according to the color of the LED determined according to the corresponding mode.

Therefore, the user can easily recognize and input characters corresponding to the mode selected by the user by LED light corresponding to each mode without having to feel confusion by several character arrangements in one button.

The text input by the user may be viewed through the screen display unit 350 such as liquid crystal.

3 is a flowchart illustrating a method of operating a character input system according to the present invention.

First, the user selects a text input mode (S100).

If the mode input by the user is the Korean mode (S110) and the LED blue is driven (S115), if the mode input by the user is the English mode (S120) the LED red is driven (S125), the user inputs If the mode is the number mode (S130), the LED is driven green (S135).

Then, only the LED color corresponding to each mode is passed through the filter by the three-color filter to display characters that can be input from the corresponding button.

Then, the user inputs a key button having a character to be input (S140).

When the mode switch is required (S150), the mode is selected again (S100) and text is input.

At this time, the key button is displayed on the button is the character of the mode is illuminated with a predetermined LED color.

To do this, each button is cut out of the letters, and when the lower three-color LED emits light for each mode, only the corresponding letter is displayed on the button through the three-color filter.

4 is an exemplary view schematically showing a keypad in the Hangul mode in the character input system according to the present invention.

When the user of the mobile communication terminal selects the Hangul mode for inputting Korean characters when inputting a character, only Korean characters are displayed by LED light emission from a button including Korean / English / numeric characters.

Here, when the user selects the Hangul mode, the LED is emitted from the LED driver so that only the characters of the current mode are displayed by the three-color filter.

This is because the color of each of the three color LEDs are stored in the memory according to the mode, so only the filter of the three color filters is allowed to pass through, so other characters that cannot be entered are hidden from the keypad.

As shown in Fig. 4, Hangul vowels are arranged on the 1,2,3 keys in the Cheonjiin (·, ㅣ, ㅡ) manner, and Hangul consonants are arranged on the remaining keys.

Then, the user must find and press the button marked with the required character by the LED light emitting method.

5 is an exemplary view schematically showing a keypad in the English mode in the character input system according to the present invention.

When the user of the mobile communication terminal selects the English mode for English input at the time of character input, only English characters are displayed by LED light emission from a button including Korean / English / numeric characters.

Then, the user finds and enters the button marked with the required English from the button marked with LED.

Here, the LED according to the English mode emits light, so that only the filter corresponding to the English mode passes through the three-color filter, so that the Korean characters or numbers are not visible to the user on the keypad.

6 is an exemplary view schematically showing a keypad in the numeric mode in the character input system according to the present invention.

Referring to FIG. 6, when the user of the mobile communication terminal selects the numeric mode for English input at the time of numeric input, only the numerals are displayed on the buttons including Korean / English / numeric characters.

The user then finds and enters the button marked with the required number from the button marked with LEDs.

Here, the LED according to the number mode emits light, so that only the filter corresponding to the number mode in the three-color filter passes, so that the Korean or English characters are not visible to the user on the keypad.

Although the present invention has been described in detail with reference to specific embodiments, this is for describing the present invention in detail, and the character input system and its operation method according to the present invention are not limited thereto, and the technical field of the present invention is not limited thereto. It is apparent that modifications and improvements are possible by those skilled in the art.

According to the present invention, only characters according to the selected character mode in the character input system are displayed on the LEDs of the buttons, so that the user can easily input characters and recognize the characters.

In addition, the present invention has the effect of making the design refined by emitting LEDs suitable for the character mode in different colors.

1 is an exemplary view showing a keypad of a mobile communication terminal according to a conventional character input method.

2 is a block diagram of a character input system according to the present invention;

3 is a flow chart showing a method of operating a character input system according to the present invention.

Figure 4 is an exemplary view schematically showing a keypad in the Hangul mode in the character input system according to the present invention.

5 is an exemplary view schematically showing a keypad in the English mode in the character input system according to the present invention.

6 is an exemplary view schematically showing a keypad in the numeric mode in the character input system according to the present invention.

<Description of Signs of Major Parts of Drawings>

100 control unit 110 input unit

120: LED driver 130: memory unit

140: screen display unit

Claims (7)

A keypad including several Korean / English / numbers in one button; Character input system comprising a; LED driving unit for displaying the corresponding character on the button by driving the LED of each button according to the Hangul / English / numeric mode in the keypad. The method of claim 1, And the keypad has a three-color LED and a three-color LED filter under each button. The method of claim 1, The button is cut in Korean / English / numerals, characterized in that the character is displayed by the LED light. The method of claim 1, Character input system, characterized in that the LED color is different according to the Hangul / English / numeric mode. Selecting a Korean / English / numeric mode; Driving an LED when one of the Hangul / English / numeric modes is selected; And displaying an inputable letter on a button of a keypad when the LED is driven. The method of claim 5, Each button of the keypad is cut in Korean / English / numerals, and the character is displayed by the LED light emitting in the lower operating method of the character input system. The method of claim 5, Operating method of the character input system, characterized in that the LED color is different according to the Hangul / English / numeric mode.