KR100820309B1 - Mobile Phone Using Optical Pointing Device to Input Letters - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal for inputting characters by using an optical pointing device, and aims at making character input of the portable terminal very simple and easy.

To this end, the present invention, in a portable terminal comprising a display screen, a transmission and reception device, a plurality of functions and input buttons, by mounting the optical pointing device 100 as a character input means at a predetermined position of the portable terminal, the optical pointing Characters written on the bottom surface 103 as a subject are directly displayed on the display screen 101 through the light emitted from the light source of the device.

According to the present invention, since the user can directly enter a character while watching the screen in which the character is input, it is possible to reduce a typo, and the elderly or the handicapped persons who have difficulty in pressing a small letter button can easily enter the character. It can work.

Optical pointing device, handheld terminal, subject, display

Description

Mobile Phone Using Optical Pointing Device to Input Letters}

1 is a view showing a push type keypad of a conventional portable terminal.

Figure 2 is a block diagram showing the operation of the optical pointing character input portable terminal according to the present invention.

3 is a state diagram used in the optical pointing character input portable terminal according to the present invention.

4 is a state diagram used in the optical pointing character input portable terminal according to another embodiment of the present invention.

5 is a cross-sectional view showing an example of the optical pointing device that can be applied to the present invention.

6 is a perspective view showing an example of the optical pointing device that can be applied to the present invention.

** Description of the symbols for the main parts of the drawings **

100: optical pointing device 101: disply screen

102: Key Pad 103: Subject

104: Button Key 105: Click Key

The present invention relates to a portable terminal for inputting a character using an optical pointing device, and more particularly, to directly mount an optical pointing device to a small portable terminal such as a mobile phone so that character input can be performed very simply and easily. An optical pointing character input portable terminal is provided.

The portable terminal can be classified into a slide type, a folder type, a bar type, a horizontal type, a hinge type, and the like according to its type. Among them, the general structure of the slide-type portable terminal, as shown in Figure 1, the display body 40 and the upper body 10 is provided with a receiver, a plurality of selection function buttons, direction buttons, numbers and letter buttons And a lower body 20 provided with a transmitting device.

In the slide-type portable terminal, a keypad 30 for inputting characters is provided on the upper surface of the lower body 20, and a display screen 40 in which characters input by a user are represented is displayed on the upper body 10. FIG. It is provided. Accordingly, the user inputs letters while alternately displaying the keypad 30 provided on the lower body 20 and the display screen 40 provided on the upper body 10.

In addition to the slide type described above, other types of portable terminals input characters in a manner similar to that of the slide type portable terminal.

The keypad character input of the conventional portable terminal uses a Korean input method of a key combination method for displaying characters by combining Korean consonants and vowels, and a keypad press input method for designating a uniformly arranged English alphabet.

That is, the keypad 30 of the conventional portable terminal, the Korean basic consonants a, b, c, d, ㅁ, ㅂ, ㅅ, ㅇ, ㅈ, ㅎ and the basic vowels ㅏ, ㅓ, ㅗ, TT, ㅣ, ㅡ Character input keys arranged so as not to overlap with each other, and additional extension keys for selectively displaying the extension sounds (beep, vowel) of the basic consonants and the extended vowels (double vowel, vowel vowel) of the basic vowel.

According to the character input method of the conventional portable terminal having such a structure, it is possible to move only one space at the time of character input, that is, due to the key press method by mono movement, it takes a lot of input time and troublesome operation. .

In addition, when a user of a mobile terminal enters a character, the user sees and inputs the keyboard printed on the keypad. Since the characters printed on the keypad are small, a large number of typos occur when the typo is recognized. There is a problem that requires additional time to fix.

Furthermore, the character input method of the conventional portable terminal has a problem that it is very difficult for the elderly with poor eyesight or the handicapped person having difficulty in key input because small characters are printed on the small keypad.

The present invention has been proposed to solve the above problems, and an object thereof is to enable a simple and easy character input of a portable terminal.

Another object of the present invention is to make it possible to immediately check the input character at the same time the user inputs the character, it is possible to reduce the occurrence of typos in the character input.

Still another object of the present invention is to make it easy for the elderly who have poor eyesight or users who have difficulty in operating a small keypad to easily input text.

Still another object of the present invention is to make it possible to easily input not only Korean and English but also foreign languages such as Japanese and Chinese.

The optical pointing character input portable terminal of the present invention for achieving the above object, in the portable terminal comprising a display screen, a transceiver, a plurality of functions and input buttons, the optical input as a character input means at a predetermined position of the portable terminal; By mounting the pointing device, a character written on the floor surface of the subject is directly displayed on the display screen through the light emitted from the light source of the optical pointing device.

The optical pointing device may be mounted on the lower body or may be mounted on the upper body.

In addition, the optical pointing character input portable terminal according to the present invention is characterized in that one side of the portable terminal is provided with a button key (Button Key) for selecting the number, Korean, English alphabet and other character recognition.

The button key is preferably configured to have a shortcut function of a menu item by inputting a specific character.

In addition, the optical pointing character input portable terminal according to the present invention is characterized in that it comprises a click key (Click Key) for selecting the character input mode on one side of the portable terminal.

Preferably, the click key is configured such that a letter is input while the click key is pressed and no letter is input when the finger is released.

The technical feature of the present invention is that when inputting a character in a portable terminal, the character is inputted by directly mounting an optical pointing device at a predetermined position of the portable terminal, deviating from the existing keypad press input method.

By adopting the above configuration, when the character is written on the floor surface of the object, the input character is displayed on the display screen.

The keypad of a general mobile terminal is arranged so that the basic consonants a, b, c, d, ㅁ, ㅂ, ㅅ, ㅇ, ㅈ, ㅎ and the basic vowels ㅓ, ㅓ, ㅗ, TT, ㅣ, ㅡ are not overlapped with each other. A character input key and a separate extension key for selectively displaying the extension sound (hard sound, vowel sound) of the basic consonant and the expansion vowel (double vowel, layered vowel) of the basic vowel are provided.

Therefore, in order to complete a sentence, dozens of key presses are required, and thus a lot of input time is required, and since the letters of the keyboard are printed very small, users with poor eyesight spend a lot of time in text input.

In addition, the user who enters the character is focused on the input of the character, so even if a typo occurs, it is difficult to check it immediately, and even if you find a typo after entering the character, you need to press the keypad again to correct it. In many cases, users may feel uncomfortable.

For this reason, users who are unfamiliar with keypad input, especially the elderly or the handicapped, have a considerable difficulty in entering letters.

According to the present invention, the optical pointing device is directly mounted at a predetermined position of a lower folder of the portable terminal so that the characters written on the bottom surface of the subject are directly displayed on the display screen through the light emitted from the light source of the optical pointing device.

Therefore, according to the present invention, not only Korean and English, but also foreign languages such as Japanese and Chinese characters can be easily input.

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

2 is a block diagram showing the operation of the mobile terminal of the present invention.

First, when a user writes text on the bottom surface using an optical pointing device mounted on a portable terminal, the text written on the bottom surface is input to the central processing unit through a driving input unit of the optical pointing device.

In the CPU, the characters recognized by the Korean recognition unit, the English recognition unit, the numeric recognition unit, and other character recognition units are temporarily stored in the memory, and the characters inputted by the optical pointing device are displayed on the display unit of the portable terminal. .

In order for the optical pointing device to be mounted on the portable terminal, it is essential that the lens module of the optical pointing device be manufactured in a very small size. To this end, the present applicant has developed ultra-slim optical pointing devices suitable for a portable terminal, and the Korean Patent Application Nos. 10-2004-0113266, 10-2005-0000471, 10-2005-0005935, 10-2005 -0005936, 10-2005-0005937, 10-2005-0009356 and 10-2005-0063614. The optical pointing device used in the present invention may use any of the above optical pointing devices.

Hereinafter, the optical pointing device disclosed in Korean Patent Application No. 10-2004-0113266 among the optical pointing device filed by the present applicant will be described.

As shown in FIGS. 5 and 6, the optical pointing device 100 includes a cover glass 230, a first waveguide 210, a second waveguide 220, and an image sensor. And a light source unit (not shown).

The first waveguide 210 is integrally formed of an optical plastic material and includes a first reflecting surface 212 and a first planar lens portion 214. The second waveguide 220 is also integrally formed of an optical plastic material, and includes a second reflecting surface 222 and a second flat convex lens portion 224.

In the optical pointing device having the above structure, when light is irradiated to a subject from a light source unit (not shown), the light is reflected from the subject, and then the cover glass 230, the first reflecting surface 212, and the first planar lens Light is transmitted to the image sensor 250 through the unit 214, the blocking unit 260, the second flat convex lens unit 224, and the second reflective surface 222.

Conventionally, the light path from the cover glass 230 to the first and second flat convex lenses 214 and 224 and the image sensor 250 has a vertical structure, but according to the above structure, the light path has a horizontal structure. It can be transformed.

Therefore, since the thickness of the optical pointing device becomes very thin, the optical pointing device can be easily mounted on a small portable terminal, and the length of the optical pointing device can be freely changed according to the type of the portable terminal, so that it can be applied to various models. You can do it.

The optical pointing device has been described as an example, and of course, the other optical pointing device filed by the applicant can also be applied to the present invention. Here, the description of the other type of optical pointing device will be omitted.

3 and 4 are diagrams illustrating the use state of the optical pointing character input portable terminal according to the present invention. 3 is a view illustrating a state in which the optical pointing device is mounted on the lower body of the slide-type portable terminal, and FIG. 4 illustrates a state in which the optical pointing device is mounted and used in the upper body of the horizontal portable terminal. The present invention is not limited to the sliding type and the horizontal type, but may be equally applied to other types of portable terminals such as a folding type, a bar type, and a hinge type.

The optical pointing character input portable terminal according to the present invention has a lower end portion formed with a predetermined curved surface, and the optical pointing device 100 is mounted on the curved surface. The optical pointing device 100 may be mounted on the lower body or may be mounted on the upper body. When the optical pointing device is mounted on the upper body, as shown in FIG. 4, the character may be input by turning the upper body horizontally.

On one side of the side portion of the portable terminal according to the present invention, a button key 104 for selecting digits, Korean, English alphabets and other characters, and a click key 105 for selecting a text input mode are provided.

When a user inputs a character using the portable terminal according to the present invention, the user can place the portable terminal equipped with the optical pointing device 100 on the subject 103 and write the character while pressing the click key 105.

The click key 105 is set to a character input mode such that a character is input when pressed and a character is not input when the finger is released from the click key 105. The text thus input is immediately displayed on the display screen 101.

In addition, a user presses the button key 104 when inputting a character, a number including a basic consonant and a basic vowel, an extended sound (a sound, a vowel sound) and an extended vowel (a double vowel, a multiple vowel), and a single letter You can select and enter English alphabet and other characters in the form of sound.

By the above-described button key 104, the user can simply select the character form while writing the text, thereby reducing the confusion of each character inputted to improve the character recognition rate.

In addition, when the other character recognition unit is selected by the button key 104, characters such as kanji, Japanese, etc., which are difficult to input, can be easily input.

Furthermore, by giving a shortcut function of a menu item to the button key 104, when the user inputs a specific character and clicks the button key 104, the user can move to each menu item (notepad, message item, etc.) immediately.

The functions of the remaining parts except for the button key 104 and the click key 105 are the same as those of the conventional mobile terminal, and thus detailed description thereof will be omitted.

In the above description of the preferred embodiment of the present invention, the present invention is not limited only to this specific embodiment and various modifications and variations are possible without departing from the spirit of the present invention.

As described above, according to the optical pointing character input portable terminal according to the present invention, since the user inputs a character while directly checking the screen on which the character is input, the input of the character is very easy and the typographical effect can be reduced. have.

In particular, it is more convenient when inputting a single phonetic character or a complex Chinese character representing a character displaying a single sound like an alphabet.

In addition, since the user is not bound by the form of the character input, there is an effect that can easily enter the character, even elderly people with difficulty in key input.

Claims (8)

In a mobile terminal comprising a display screen, a transceiver, a plurality of functions and input buttons, The light pointing is formed in a horizontal structure of the light emitted from the light source and configured to directly display characters written on the bottom surface 103 in real time by moving the portable terminal while the user is holding the portable terminal in real time. Device 100; Optical pointing character input, characterized in that it comprises a button key (Button Key, 104) which is provided on the side of the portable terminal so that the user can select the number, Korean, English alphabet and other characters recognition with a finger while holding the portable terminal Mobile terminal. delete The method of claim 1, The optical pointing device 100 is an optical pointing character input portable terminal, characterized in that mounted on the lower body of the portable terminal.  The method of claim 1, The optical pointing device 100 is an optical pointing character input portable terminal, characterized in that mounted on the upper body of the portable terminal. delete The method of claim 1, The button key 104 is configured to have a shortcut function of a menu item by inputting a specific character. The method of claim 1, The optical pointing character input portable terminal further comprises a click key 105 provided on the side of the portable terminal so that the user can select the character input mode with a finger while holding the portable terminal. Pointing character input mobile terminal. The method of claim 7, wherein The click key 105 is an optical pointing character input portable terminal, characterized in that the character is input so that the character is not input when the finger is released while pressing the click key.

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