KR20060123875A - Mobile device having input equipment of pen type - Google Patents

Abstract

A mobile communication terminal having a pen-type input device is provided to easily input characters or pictures instead of an existing complex menu/keypad operation type by having a sensor and moving the mobile communication terminal such as a pen. A contact sensor(120) transmits a contact sensing signal when it is contacted to an object surface having a certain region. A movement sensor(125) transmits a displacement signal according as it is moved on the object surface. A signal processing unit(130) operates the contact sensor(120) and the movement sensor(125), receives the contact sensing signal and the displacement signal, and analyzes the contact sensing signal and the displacement signal as digital data. A character recognizing unit(140) configures the displacement signal transmitted while the transmission of the contact sensing signal from the signal processing unit(130) is maintained as certain color data on an image region, analyzes the configured image data, and recognizes the analyzed image data as a certain character.

Description

Mobile device having a pen-type input device {Mobile device having input equipment of pen type}

The present invention relates to a data input device of a mobile communication terminal.

Recently, mobile communication terminals, which are portable and provide various functions such as a mobile phone, a personal digital assistant (PDA), an iBook phone and a smart phone, have been popularized.

In addition to the basic communication functions, the mobile communication terminal provides various functions such as a wireless Internet function, a diary (electronic organizer) function, a recording / reproducing function, and an entertainment function. Accordingly, more diverse data input devices are required.

Representative data input devices of conventional mobile communication terminals include a keypad, a microphone, a camera, and the like. In the case of inputting a character, a user who is not skilled in the keypad feels difficulty in entering a character because the keypad is small in size. When inputting special characters, foreign languages, etc., the input system itself is complicated, and the input method is different for each type of product, making character input more difficult.

In order to improve such a conventional input method, a method of inputting a text by voice using a microphone and a voice recognition module has been proposed. However, when the text is input by voice recognition in a living space, it causes damage to the people around it. There is a problem that information is exposed.

For this reason, a text input method through voice recognition is rarely used.

Accordingly, there is a demand for the development of a new input device that can input characters more quickly and conveniently in a public place without causing damage to the surroundings.

Accordingly, an object of the present invention is to provide a mobile communication terminal equipped with an input device that easily inputs a character or a picture by moving a mobile communication terminal like a pen, thereby avoiding the conventional complicated menu / keypad manipulation method. It is done.

In addition, in the present invention, when a mobile terminal is moved like a pen and a character or a picture is inputted, an error or post-input error is detected and redisplayed by displaying a character or a picture drawn in a virtual area through an external LCD window to allow the user to check in real time. Another object of the present invention is to provide a mobile communication terminal equipped with an input device for overcoming the hassle of input.

In addition, the present invention is equipped with each component in consideration of the position of the sensor, the position of the button to lift the stroke, the position of the LCD window, the user can hold the mobile communication terminal like a pen and check the LCD window to comfortably input text / picture Another object of the present invention is to provide a mobile communication terminal equipped with an input device.

In order to achieve the above object, a mobile communication terminal equipped with a pen-type input device according to the present invention comprises a touch detection sensor for transmitting a touch detection signal when the contact with the object surface having a predetermined area; A movement sensor for transmitting a displacement signal as the object is moved on the object plane; A signal processor for operating the touch sensor and the movement sensor, and receiving the touch sensor signal and the displacement signal and interpreting the data as digital data; And a character recognition unit configured to configure the displacement signal transmitted while the transmission of the touch detection signal from the signal processing unit as predetermined color data on the image area, and to interpret the configured image data to recognize the predetermined character as a predetermined character. It features.

In addition, the movement detection sensor of the mobile communication terminal equipped with a pen-type input device according to the invention is characterized in that it is provided with an infrared sensor.

In addition, the touch sensor of the mobile communication terminal with a pen-type input device according to the present invention is characterized in that it is provided with a capacitive touch sensor or an electric field contact sensor.

In addition, the movement detection sensor and the contact detection sensor of the mobile communication terminal equipped with a pen-type input device according to the present invention is characterized in that it is provided as a contact displacement sensor.

In addition, the mobile communication terminal equipped with a pen-type input device according to the invention is characterized in that it further comprises a screen processing unit for receiving the character information received from the character recognition unit to output to the screen.

In addition, the screen of the mobile communication terminal equipped with a pen-type input device according to the present invention is characterized in that the screen exposed to the outer surface of the case for fixing and protecting the respective components inside.

In addition, the contact detection sensor and the movement detection sensor of the mobile communication terminal equipped with a pen-type input device according to the present invention, a columnar structure is provided in a case to protect the respective components to be fixed therein, the columnar structure It is attached to the end is characterized in that the user is in contact with the object surface like a pen when the user grips and moves.

In addition, the columnar structure of the mobile communication terminal with a pen-type input device according to the present invention is an antenna, characterized in that for attaching the contact sensor and the movement sensor to the outer end.

In addition, the mobile communication terminal equipped with a pen-type input device according to the present invention further includes a button unit for transmitting a button signal, wherein the character recognition unit converts the displacement signal into predetermined color data on an image area while the button signal is received. If the button signal is not received, the displacement signal is configured with color data set as a background color of the image area.

In addition, the character recognition unit of the mobile communication terminal equipped with a pen-type input device according to the present invention is linked with an application program that requires a text input to pass the recognized character information to the application program, the recognized character information is the text data Characterized in that to be used as.

The character recognition unit of the mobile communication terminal equipped with a pen-type input device according to the present invention may store the image data as image data when it is not recognized as a predetermined character as a result of analyzing the configured image data. .

Hereinafter, a mobile communication terminal equipped with a pen-type input device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. As a mobile communication terminal according to an embodiment of the present invention, a cellular phone is used.

1 is a block diagram schematically illustrating the components of a mobile communication terminal 100 equipped with a pen-type input device according to an embodiment of the present invention.

Referring to FIG. 1, a mobile communication terminal 100 equipped with a pen-type input device according to an embodiment of the present invention includes an antenna 105, an RF (Radio Frequency) communication unit 110, a control unit 115, and a touch sensor 120. ), The movement detecting sensor 125, the button unit 160, the signal processor 130, the image processor 135, the character recognition unit 140, the graphic processor 145, the LCD 150, and the memory 155. It is made to include.

First, the RF communication unit 110 includes a duplexer, an RF transceiver, a time / frequency subsystem, a gain control system, etc. (each component of the RF communication unit 110 is not shown) connected to the antenna 105. Communication with the base station, the antenna 105 has a form protruding outside the upper case, like a typical mobile phone.

In the mobile communication terminal 100 according to the embodiment of the present invention, the touch sensor 120 and the movement sensor 125 may write letters on a flat surface of the object (for example, a flat surface of a paper or a notebook or a book) with a pen. By touching or moving as if writing, the movement path is recognized as a character or stored as a picture, wherein the user comfortably grips the mobile communication terminal (case) 100 according to an embodiment of the present invention and The contact detection sensor 120 and the movement detection sensor 125 have a mechanical structure located at the upper end of the antenna 105 protruding to the outside so as to draw a picture.

2 is a diagram illustrating a form in which a mobile communication terminal 100 equipped with a pen-type input device according to an embodiment of the present invention is gripped by a user.

According to FIG. 2, the mobile communication terminal 100 according to the embodiment of the present invention is held upside down so that the antenna 105 contacts the paper surface, and the external LCD 150 window naturally enters the user's viewing range. The button portion 160 is located in the detection portion of the structure to facilitate the operation.

On the other hand, when the mobile communication terminal 100 according to the embodiment of the present invention is a built-in antenna, in order to have a mechanical configuration shown in Figure 2, a columnar structure is provided at the position when the antenna is sheathed, the touch sensing The sensor 120 and the movement detecting sensor 125 may be attached to the end of the columnar structure.

The touch sensor 120 transmits a touch detection signal to the signal processor 130 when it comes into contact with an object surface. For example, the touch sensor 120 may be provided as a capacitive sensor or an electric field sensor.

Here, the capacitive touch sensor is a sensor that detects the contact by using the difference of the amount of electricity charged when the object contact the object surface, the electric contact sensor forms an electric field to detect the change of the electric field when contacting the object surface It is a sensor that detects contact.

In addition, the movement detection sensor 125 generates a displacement signal as it moves on the object surface, and transmits the generated displacement signal to the signal processor 130 in real time. An infrared sensor is used as the movement detection sensor 125. desirable.

However, the movement detection sensor 125 and the contact detection sensor 120 may be provided as one contact displacement sensor to transmit a contact detection signal and a displacement signal together.

The memory 155 includes an application program for requesting text input, such as a mail writing program and a memo program. When the user requests a text / picture input function according to the present invention while the application program is executed, the controller ( 115 transmits an operation signal to the signal processor 130.

Under the control of the controller 115, the signal processor 130 operates the touch sensor 120 and the movement sensor 125, respectively, and the touch sensor signal and the displacement signal, respectively, the touch sensor 120 and the movement sensor. Received from the sensor 125 and interpreted as digital data.

The image processor 135 determines that the input of the text / picture is started when the touch detection signal is transmitted from the signal processor 130, and the displacement signal transmitted together while the transmission of the touch detection signal is maintained on the image area. It consists of color data (i.e., a character or a picture is drawn on the image area according to the displacement signal).

In this case, the image processing unit 135 defines the size of the image area to a predetermined value, and the maximum size of the virtual area formed on the object surface and writing letters or pictures is matched with the defined image area.

That is, when a user grips the mobile communication terminal 100 according to an embodiment of the present invention as a pen and draws a character or picture, the size of the drawn character or picture has an average size, and the virtual area of the object plane is such an average. The maximum size is set in advance based on the numerical value.

Therefore, unless the user draws an unusually large text or picture, most of the text or picture is included in the image area.

As described above, in generating the image data, the image processor 135 configures the displacement signal as predetermined color data on the image area while the button unit 160 is operated to receive the button signal.

On the other hand, if the button signal is not received, the image processor 135 configures the displacement signal as color data set as the background color of the image area so that specific pixels are not displayed in the image area.

That is, as shown in FIG. 2, when the user draws a character or a picture while pressing the button unit 160 using the index finger, the image processing unit 135 displays it in the image area and displays the button unit 160. When a character or a picture is drawn while not pressed, the image processing unit 135 moves only the position of the current pixel without displaying it in the image area.

The image processor 135 transmits the image data generated through the above-described process to the graphic processor 145, and the graphic processor 145 converts the transferred image data into an LCD format and displays the image data on the LCD 150. .

The LCD 150 is an external LCD exposed to the case outer surface (the outer surface in the folded state in the case of the folder type) of the mobile communication terminal 100 according to the embodiment of the present invention.

3 is a diagram illustrating a screen displayed on the LCD 150 is a character input to the mobile terminal 100 equipped with a pen-type input device according to an embodiment of the present invention, Figure 4 is an embodiment of the present invention FIG. 1 is an enlarged view of input characters displayed on the LCD 150 of the mobile communication terminal 100 having a pen-type input device.

According to FIG. 3, it can be seen that the letter “b” is written in the virtual area of the object plane (the paper surface), and the letter “b” in the virtual area is displayed on the LCD 150 as it is written. .

Referring to FIG. 4, a1, a3, and a5 areas of the letters “I” displayed on the LCD 150 are areas in which the sensors are moved while the button unit 160 is operated, and a2 and a4 areas. Is an area in which the sensors are moved while the button unit 160 is operated.

Accordingly, it can be seen that the a1 region, the a3 region, and the a5 region are indicated by lines, and the a2 region and the a4 region are moved regions to display the next region, that is, the a3 region and the a4 region.

The text or picture input to the LCD 150 is displayed in real time so that the user can check whether the text / picture drawn in the virtual area of the object surface is properly input.

In addition, the character recognition unit 140 interprets the image data to recognize the predetermined character and transfers the character information recognized by the application program linked by the control unit 115, the recognized character information on the application program To be used as text data.

For example, the character recognition unit 140 uses image segmentation techniques such as discontinuity detection, edge connection, thresholding, and the like, and image data using image processing algorithms such as representation and boundary description techniques. Can be interpreted and text information can be extracted.

However, when character information corresponding to the image data that cannot be extracted cannot be extracted (that is, when it is not determined to be a character) as a result of analyzing the configured image data, the character recognition unit 140 uses the image data as image data as a memory 155. Save it to

The stored image data may be used as image (picture) data in an application that can insert an image.

Hereinafter, with reference to the accompanying drawings will be described a method in which the mobile communication terminal 100 with a pen-type input device according to an embodiment of the present invention receives a character or a picture.

5 is a flowchart illustrating a method in which a mobile communication terminal 100 equipped with a pen-type input device according to an embodiment of the present invention receives a text or a picture.

For the first time, the mobile communication terminal 100 according to an embodiment of the present invention is gripped upside down by the user, and while the button unit 160 is operated, the end of the antenna 105 is brought into contact with the paper surface to move a predetermined letter or picture. This paper is drawn on the virtual area (S100).

Accordingly, the touch sensor 120 attached to the end of the antenna 105 transmits a touch detection signal to the signal processor 130, and the motion sensor 125 attached to the end of the antenna 105 transmits a displacement signal. The signal processor 130 transmits in real time (S110).

The signal processor 130 interprets the contact detection signal and the displacement signal received from each sensor as digital data and transmits the digital signal to the image processor 135 (S120).

In addition, the button signal generated by the button unit 160 is transmitted to the image processing unit 135 in synchronization with the touch detection signal and the displacement signal (S110).

When the touch detection signal interpreted as digital data is transmitted (S130), the image processor 135 determines that the input of the text / picture is started (S140), and the displacement signal transmitted together while the transmission of the touch detection signal is maintained. It consists of predetermined color data on the video area.

At this time, the image processor 135 configures the displacement signal as predetermined color data on the image area while the button signal is received (YES in S150), and while the button signal is not received (S150 in S150). NO ”) the displacement signal is composed of color data set as a background color of the image area so that the corresponding pixels are not displayed in the image area and the current pixel position is moved in real time (S170).

The image processor 135 transmits the generated image data to the graphic processor 145 at a predetermined cycle, and the graphic processor 145 displays the transferred image data on the LCD 150 in real time (S180).

After a predetermined character or picture is drawn, if the user lifts the mobile communication terminal 100 according to an embodiment of the present invention and is spaced apart from the paper surface, the signal processing unit 130 is not generated from the contact detection sensor 120. Informs the non-receiving state of the touch detection signal to the image processor 135 (S190).

The image processor 135 determines that one character or picture input is completed as the contact detection signal is not received, and finally transfers the completed image data to the character recognition unit 140 (S200).

The character recognition unit 140 interprets the image data, and when the input data is recognized as a character as a result of the analysis (S210) extracts the matching character information and transfers the character information to the application program linked by the control unit 115 (S220).

However, when character information matching the input data cannot be extracted as a result of the analysis, the character recognition unit 140 determines the image data as image data and stores the image data in the memory 155 (S230).

The present invention has been described above with reference to the preferred embodiments, which are merely examples and are not intended to limit the present invention, and those skilled in the art to which the present invention pertains do not depart from the essential characteristics of the present invention. It will be appreciated that various modifications and applications are not possible that are not illustrated above. For example, each component specifically shown in the embodiment of the present invention can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

According to the mobile communication terminal equipped with a pen-type input device according to the present invention, by simply using a mobile communication terminal as a pen in a virtual space without complicated menu and keypad manipulation, a character or picture can be quickly moved without exposing private information to the surroundings. There is an effect that can be input to the communication terminal.

In addition, according to the present invention, a character or a picture drawn in a virtual space can be checked in real time through an external LCD window, so that a character or a picture can be accurately drawn, and by operating buttons together, the character / picture can be floated to complete a character / picture. Because it can be, it is effective to input text / picture comfortably.

1 is a block diagram schematically showing the components of a mobile communication terminal equipped with a pen-type input device according to an embodiment of the present invention.

2 is a diagram illustrating a form in which a mobile communication terminal equipped with a pen-type input device according to an embodiment of the present invention is gripped by a user.

3 is a diagram illustrating a screen displayed on the LCD characters entered into the mobile communication terminal equipped with a pen-type input device according to an embodiment of the present invention.

Figure 4 is an enlarged view of the input characters displayed on the LCD of the mobile communication terminal equipped with a pen-type input device according to an embodiment of the present invention.

5 is a flowchart illustrating a method in which a mobile communication terminal equipped with a pen-type input device receives a text or a picture according to an embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

100: mobile communication terminal equipped with a pen-type input device

105: antenna 110: RF communication unit

115: control unit 120: contact detection sensor

125: movement detection sensor 130: signal processing unit

135: image processing unit 140: character recognition unit

145: graphics processor 150: LCD

155: memory 160: button portion

Claims (11)

A touch detection sensor which transmits a touch detection signal when contacted with an object surface having a predetermined area; A movement sensor for transmitting a displacement signal as the object is moved on the object plane; A signal processor for operating the touch sensor and the movement sensor, and receiving the touch sensor signal and the displacement signal and interpreting the data as digital data; And And a character recognizer configured to configure the displacement signal transmitted while the touch detection signal is transmitted from the signal processor on the image area, and to interpret the configured image data and recognize the image as a predetermined character. Mobile communication terminal equipped with a pen-type input device. The method of claim 1, wherein the movement sensor Mobile communication terminal with a pen-type input device, characterized in that provided with an infrared sensor. The method of claim 1, wherein the touch sensor is Mobile communication terminal with a pen-type input device, characterized in that provided with a capacitive touch sensor or an electric decorative contact sensor. The method of claim 1, wherein the movement detection sensor and the contact detection sensor Mobile communication terminal with a pen-type input device, characterized in that provided as a contact displacement sensor. The method of claim 1, And a screen processing unit which receives the character information recognized by the character recognition unit and outputs the screen to the screen. The method of claim 5, wherein the screen Mobile communication terminal with a pen-type input device, characterized in that the screen exposed to the outer surface of the case for fixing and protecting the respective components inside. The method of claim 1, wherein the touch sensor and the movement sensor A pillar-type structure is provided in a case for protecting each component and fixed therein, and is attached to an end of the pillar-type structure so that the user contacts the object surface like a pen when the user grips and moves the case. Mobile communication terminal equipped with an input device. The method of claim 1, wherein the columnar structure An antenna, comprising: a touch input sensor and a movement detection sensor attached to an outer end of a pen-type input device provided with a mobile communication terminal. The method of claim 1, Further comprising a button unit for transmitting a button signal, The character recognition unit configures the displacement signal as predetermined color data on the image area while the button signal is received, and configures the displacement signal as color data set as the background color of the image area when the button signal is not received. Mobile communication terminal with a pen-type input device characterized in that. The method of claim 1, wherein the character recognition unit And a pen-type input device, wherein the recognized character information is used as text data by transmitting the recognized character information to the application program in association with an application program requiring text input. The method of claim 1, wherein the character recognition unit And when the image data is not recognized as a predetermined character as a result of analyzing the configured image data, storing the image data as image data.