KR100665820B1 - Mobile communication terminal and method for inputting letters - Google Patents

Abstract

A mobile terminal and a character input method are provided to enable a user to quickly and accurately input characters and to effectively input characters due to inputting consonants through a key pad and vowels through voice recognition. An input unit(110) inputs the first formant. A voice recognizing unit(130) inputs the second formant combined with the first formant. A character combining unit(130) combines the first formant and the second formant to generate a character. In this case, the first formant is a Hangul consonant and the second formant is a vowel extracted from a vowel voice of Hangul. A voice characteristic database(141) stores comparison data for extracting the second formant.

Description

Mobile communication terminal and method for inputting letters}

1 is a system configuration diagram of a mobile communication terminal for inputting text according to an embodiment of the present invention.

2 is a flowchart illustrating a process of inputting a text using voice and a keypad according to an embodiment of the present invention.

3 is a diagram illustrating an example of a character input screen according to an embodiment of the present invention.

The present invention relates to a text input method, and more particularly, to a mobile communication terminal and a method for inputting text using voice recognition and a keypad.

Many mobile communication terminals have been developed a method for inputting characters effectively with a limited number of digit buttons. In other words, the digit button has a consonant and a vowel, and the special key button can be configured here.

In this way, the consonants are followed by a vowel. Therefore, when entering "Welcome", select the digit button corresponding to "ㅂ", and select the digit button corresponding to "ㅏ". Of course, when the digit button corresponding to the consonant "b" is selected, the letter "half" is input. The same goes for entering the rest of the letters "Earth". On the other hand, there is a text input method through voice recognition. This uses the "Speech to text" feature.

However, the method of using only the digit button of the keypad has a disadvantage in that many strokes are required to input characters. Therefore, there is a certain restriction on the character input speed.

In addition, in the case of using the speech recognition method, since the consonants are mixed, it is not suitable for Hangul input due to the high probability of error due to the characteristics of Hangul.

As an object of the present invention, there is provided a mobile communication terminal and method for increasing a text input speed.

In addition, another object of the present invention is to provide a mobile communication terminal and method for enabling accurate character input with fast input speed.

In order to achieve the above object, the present invention provides an input unit for inputting a first phoneme, a voice recognition unit for inputting a second phoneme synthesized with the first phoneme, a first phoneme and a second phoneme to synthesize a character. It provides a mobile communication terminal comprising a character synthesizer.

In this case, the first phoneme is a consonant of the Hangul and the second phoneme is characterized in that it is a vowel extracted from the vowel voice of the Hangul.

In addition, the mobile communication terminal is provided with a voice characteristic database storing comparative data for extracting the second phoneme.

The input unit may also input a second phoneme.

In addition, when the first phonemes are input again, the character synthesizer generates a character including a consonant consonant.

In addition, when the second phonemes are input again after generating a character including the consonant, the character synthesizer is characterized by generating the next character consisting of the first character and the final character.

In another aspect, the present invention provides a method of inputting a first phoneme, inputting a second phoneme, generating a character by synthesizing the first phoneme and the second phoneme, and displaying a generated character. It provides a character input method comprising a.

Also, after the generating character, checking whether the first phoneme is input followed by the second phoneme, if the second phoneme is input, the first phoneme becomes consonant, and if the second phoneme is not input, The first phone may further include a step of becoming a consonant.

In this case, the first phoneme is a consonant of the Hangul, the second phoneme is characterized in that the vowels extracted from the phonetic collection of the Hangul.

Therefore, it is possible to enter characters effectively by inputting the consonants by keypad and vowels by voice recognition. In addition, it has the effect that accurate character input is possible with fast input speed.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment according to the present invention.

1 is a system configuration diagram of a mobile communication terminal for inputting text according to an embodiment of the present invention. Referring to the drawings, the mobile communication terminal 100 includes a control unit 100, an input unit 110, a display unit 120, a character synthesizer 130, a memory unit 140, a voice recognition unit 150, It has a wireless circuit unit 160.

The controller 100 controls the functions implemented in the mobile communication terminal and processes data and signals with other components. In particular, one embodiment of the present invention selectively executes the general text input mode and the mixed text input mode using the voice recognition and input unit 110 to input only the key button in the input unit 110.

The input unit 110 is a digit button (0-9), a special key button (*, # ....) used as an input in the mobile communication terminal, a letter key button engraved with the Korean alphabet or alphabet, to perform a function Consists of a function key button, and serves as an interface for transmitting a user's instruction to the control unit 100.

In particular, in an embodiment of the present invention, a dedicated key button for directly executing text input using voice and key buttons may be separately configured. Of course, it is also possible to configure in a menu manner and to be selected by the user. That is, the user may selectively select a method of inputting text using only a key button or select a text input method using voice and a key button.

The display unit 120 may be formed of a display device such as a liquid crystal display (LCD), an organic light emitting diode (OLED), a touch screen, and the like, and is controlled by the controller 100. According to the display, the menu screen selected by the user of the mobile communication terminal, the execution screen, and the result screen are displayed. In particular, the date and time of the present invention displays the input character. In the case of the touch screen, it is possible to perform an input function performed by the input unit 110.

The character synthesizer 130 performs a function of synthesizing characters by synthesizing the consonants of the Hangul vowel input by the input unit 110 and the voices of the Hangul vowel input by the user.

The memory unit 140 may be configured of a flash memory, a RAM, an electrically erasable programmable read only memory (EEPROM), and the like. To explain this, the basic real-time operating system (OS) and the call processing software of the mobile communication terminal are stored in the flash memory, and the variables and states of these programs are loaded from the RAM and operated. The ROM may be configured as an EEPROM, and may store nonvolatile data that may be electrically erased or stored again and perform input / output according to a command of the controller 100.

In one embodiment of the present invention, in particular, a voice characteristic DB 141 for analyzing a user's voice is stored. The voice characteristic DB 141 stores information on pronunciation characteristics and pitches according to males and females, thereby making it possible to extract vowels from the user's actual voice.

The voice recognition unit 150 analyzes the phoneme of the vowel by analyzing the voice of the user input through the microphone 151. That is, the user's voice is recognized by checking how the user pronounces a particular phoneme and the user's voice frequency. Of course, for this purpose, it has been described that the voice characteristic database 141 is a comparison object. Therefore, the voice recognition unit 150 analyzes the vowels of the Hangul and transmits them to the character synthesis unit 130. This is as follows.

1) Short vowels: ㅏ, ㅑ, ㅓ, ㅕ, ㅗ, ㅛ, TT, ㅠ, ㅡ, ㅣ

2) Double Vowels: ㅐ, ㅒ, ㅔ, ㅖ

3) Double collection: ㅚ, ㅟ, ㅢ, ㅘ, ㅝ, ㅙ, ㅞ

That is, for example, when a user pronounces "ah" and inputs "ah" voice into the microphone 151, the voice recognition unit 150 extracts "ㅏ" from the "ah" voice and transmits it to the character synthesizer 130. send. Therefore, if the user selects the letter "a" from the letter key button on the input unit 110, the letter "ga" is generated.

The wireless circuit unit 160 receives a telephone call or data sent by an external telephone through an antenna and transmits the data to the controller 100 or transmits data stored in the memory unit 140. That is, transmission and reception of voice or text data and control data are controlled.

2 is a flowchart illustrating a process of inputting a text using voice and a keypad according to an embodiment of the present invention.

The mobile communication terminal is in a standby mode until a telephone call request or a user operation is performed. That is, the mobile communication terminal receives all system information, completes normal operation, and is then in an idle state receiving a paging channel.

When the user selects a mode for text input using the key button in the standby mode, the terminal starts the text input mode (step S200).

When the text input mode is selected, the controller 100 performs voice recognition mixing to confirm which mode the user has selected (step S210). As described above, the user can select whether to input text using only the key buttons in the input unit 110 or input text using voice recognition and key buttons. Therefore, the control unit 100 checks this and proceeds to the corresponding character input method mode.

As a result of the check, if the user selects the general character input mode, the control unit 100 performs the general character input mode (step S211). Therefore, in this case, the controller 100 blocks the voice received from the voice recognition unit 150 and allows only the text input of the input unit 110.

On the contrary, if it is confirmed that the user selects the mixed character input mode, the control unit 100 performs the mixed character input mode (step S220).

In this mixed character input mode, the user can input the corresponding consonant using the key button in the input unit 110 (step S221). Hangul is usually composed of initial, neutral, and final. For example, if a user wants to enter the word "small", "ㅈ" is the initial, "ㅏ" is the neutral, and "ㄱ" is the final.

Of course, the first consonant and the final consonant are consonants.

1) Terminal sound: a, b, c, d, ㅁ, ㅂ, ㅅ, ㅇ, ㅈ, ㅁ, ㅋ, ㅌ, ㅁ, ㅎ

2) Consonants: ㄲ, ㄸ, ㅃ, ㅆ, ㅉ

When such a consonant is input, the controller 100 checks whether a voice of a vowel has been input (step S230). In other words, if the user inputs the letter "small", when "ㅈ" is input, the neutral "ㅏ" should be input. Therefore, the user makes a voice "A" to the microphone 151 and inputs the voice.

When such a voice is input, the voice recognition unit 150 recognizes this, extracts a vowel of "의" from "A", and transmits it to the character synthesizer 130.

Accordingly, the character synthesizing unit 130 generates a "child" by synthesizing the neutral "ㅏ" with the initial "j" (step S240). A screen example showing this is shown in FIG. 3. That is, in FIG. 3 (b), “child” is displayed on the screen. Of course, prior to this, the user inputs "j" using a key button in the input unit 110. The input letter is displayed on the screen as consonant "j" as shown in FIG. In other words, if the key button 300 is selected twice, “ㅈ” is input.

When the input of the primary and neutral ends, the user can input the final consonant which is the final. The consonant is a synthetic consonant, unlike the first consonant. For example, it becomes ㄳ, ㄵ, ㄶ, ㄺ, ㅄ. Therefore, the user inputs the supporting consonant corresponding to the finality (step S250).

When the consonant is input, the user inputs another consonant since the consonant may be a pair or a composite consonant. Therefore, the controller 100 checks whether the next input phoneme is a consonant (step S260).

As a result of the check, if the phoneme input following the support is a consonant, it is checked whether the input consonant is a compound or pair support (step S261). In other words, when the user inputs a consonant of "b" as a consonant and then inputs a consonant of "ㅎ", it becomes a composite consonant "ㄶ". Therefore, the letter "does".

On the contrary, if the second input consonant is not paired or synthesized, the terminal is in a mode for preparing input of the vowel voice with the previous character (step S270).

Of course, if the user directly inputs the vowel voice in the support input step (S250), the input support becomes a consonant again. In other words, if "za" is entered and "a" is entered as a base, in this case, if the user does not enter the vowel voice, it is "small". However, if the user enters the vowel voice "ah", the base "a" in "work" becomes "a" and becomes "ga". Thus, the word "self" is entered. That is, when the key button 301 is selected in FIG. 3 (a), "a" is input, and in this state, when the user inputs "a" through the microphone 151, the letter "self" is generated.

When the input is completed, the completed letter is displayed (step S280), and a screen showing this is shown in FIG. Of course, it will usually be desirable to display every phoneme input so that the user can know if there is an error in the input text.

 As mentioned above, although this invention was demonstrated in detail using the preferable Example, the scope of the present invention is not limited to a specific Example, If the person who acquired the ordinary knowledge in this technical field, without departing from the range of this invention, It should be understood that many modifications and variations are possible. Therefore, the protection scope of the present invention will be preferably interpreted by the appended claims.

As described above, the consonants are input by the keypad and the vowels are input by the voice recognition, so that the characters can be input effectively. In addition, there is an effect that can be accurately entered with a fast input speed.

Claims (11)

An input unit for inputting a first phoneme; A voice recognition unit for inputting a second phoneme synthesized with the first phoneme; A mobile communication terminal comprising a character synthesizer for synthesizing the first phoneme and the second phoneme to generate characters. The method of claim 1, The first phoneme is a mobile communication terminal, characterized in that the consonant of the Hangul. The method of claim 1, And the second phoneme is a vowel extracted from the Korean vowel voice. The method of claim 1, And a speech characteristic database storing comparison data for extracting the second phoneme. The method of claim 1, The input unit also inputs a second phone. The method of claim 1, The character synthesizing unit generates a character including a consonant when the first phonemes are input again. The method of claim 6, The character synthesizing unit generates a character including a consonant, and then again inputs a second phoneme, wherein the preceding character is composed of a consonant and a consonant, and generates a next character. Inputting a first phoneme; Inputting a second phoneme; Synthesizing the first phoneme and the second phoneme to generate a character; Character input method comprising the step of displaying the generated character. The method of claim 8, After the generating character, checking whether a first phoneme is input followed by a second phoneme; If the second phoneme is input, making the first phoneme initial; And if the second phoneme is not input, the first phoneme being a consonant. The method according to claim 8 or 9, Character input method, characterized in that the first phoneme is a consonant of the Hangul. The method according to claim 8 or 9, And the second phoneme is a vowel extracted from the Korean phonetic vowel.

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