Abstract:
Disclosed is a method and apparatus for detecting a position of a folder in a rotation touch phone having a camera. The rotation touch phone includes a sensor section, a folder, a body, and a connecting section. The folder has a magnet and the sensor section includes first, second and third sensors for detecting the magnet. The first and second sensors are located on the body and the third sensor is located on the connecting section. The connecting section connects the folder to the body. The folder is movable from first, second, third and fourth states. The first state signifies a state in which the folder is initially closed, the second state signifies a state in which the folder has been opened from the first state, the third state signifies a state in which the folder has been rotated substantially 180 degrees from the second state, and the fourth state signifies a state in which the folder has been closed from the third state. The method comprises the steps of: i) receiving a signal from the sensor section notifying that the sensor section detects the magnet; and ii) deciding that the folder is in at least one of the first to fourth states, based on the signal input from the sensor section.

Description:
PRIORITY 
   This application claims priority to an application entitled “Method for detecting position of folder in rotation touch phone having camera” filed in the Korean Industrial Property Office on Jan. 30, 2003 and assigned Serial No. 2003-6429, the contents of which are incorporated herein by reference. 
   BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to a rotation touch phone having a camera, more particularly to a method and apparatus for detecting a rotational state of a folder in a touch phone having a camera. 
   2. Description of the Related Art 
   Recently, cellular phones have become equipped with cameras and camcorders to provide various additional services in addition to the basic communication service. For example, in a cellular phone having a camera or a camcorder, a folder coupled to the cellular phone can be rotated when photographing an image by using the cellular phone, thereby improving convenience of use. 
   However, in order to establish communication via a phone call using a rotation type cellular phone having a camera in which the folder has been rotated, a user must align a speaker and a microphone in the same direction. That is, the user is required to rotate the folder to its normal position for making the communication. Thus, when the folder of the rotation cellular phone is rotated, the user must return the folder to its normal position before establishing communication with other users. In addition, when the user photographs an object in a dark setting using the camcorder or the camera without a flash, it is difficult to obtain distinct images. 
   SUMMARY OF THE INVENTION 
   Accordingly, the present invention has been made to solve the above-mentioned problems. A first object of the present invention is to provide a method and apparatus for detecting a position of a folder in a rotation touch phone having a camera. 
   A second object of the present invention is to provide a method and apparatus for converting a rotation touch phone having a camera into a speakerphone depending on a position of a folder. 
   A third object of the present invention is to provide a method and apparatus for utilizing a display section as an illumination depending on a position of a folder when photographing an object by using a rotation touch phone having a camera. 
   In order to substantially accomplish the above objects, there is provided a method and apparatus for detecting a folder position in a rotation touch phone having a camera. The rotation touch phone includes a sensor section, a folder, a body, and a connecting section. The folder has a magnet and the sensor section includes first, second and third sensors for detecting the magnet. The first and second sensors are located on the body and the third sensor is located on the connecting section. The connecting section connects the folder to the body. The folder is movable from first, second, third and fourth states. The first state signifies a state in which the folder is initially closed, the second state signifies a state in which the folder has been opened from the first state, the third state signifies a state in which the folder has been rotated substantially 180 degrees from the second state, and the fourth state signifies a state in which the folder has been closed from the third state. The method comprises the steps of: i) receiving a signal from the sensor section notifying that the sensor section detects the magnet; and ii) deciding that the folder is in at least one of the first to fourth states, based on the signal inputted from the sensor section. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The above objects and other features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: 
       FIGS. 1A to 1C  are perspective views illustrating examples of a rotational state of a folder of a rotation touch phone having a camera according to an embodiment of the present invention; 
       FIGS. 1D to 1F  are a front perspective, a rear perspective, and a side views illustrating examples of a rotation touch phone having a camera according to an embodiment of the present invention; 
       FIG. 2  is a block diagram illustrating an example of an internal structure of a rotation touch phone having a camera according to an embodiment of the present invention; 
       FIG. 3  is a flow chart illustrating an example of an operation of a rotation touch phone in a speaker mode according to an embodiment of the present invention; 
       FIG. 4  is a block diagram illustrating an example of a speaker mode setting image displayed on a screen of a rotation touch phone in a speaker mode according to an embodiment of the present invention; 
       FIG. 5  is a flow chart illustrating an example of a method for placing a rotation touch phone in a speakerphone mode of operation according to an embodiment of the present invention; and 
       FIG. 6  is a flow chart illustrating an example of showing a method for utilizing a display section as an illumination when photographing an object by using a rotation touch phone having a camera according to an embodiment of the present invention. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   Embodiments of the present invention will be described with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations has been omitted for conciseness. 
     FIGS. 1A to 1C  are perspective views illustrating examples of a rotational state of a folder of a rotation touch phone having a camera according to an embodiment of the present invention. The rotation touch phone having the camera is a folder type wireless communication terminal having a folder capable of rotating through 360 degrees and a touch screen. 
   Referring to  FIGS. 1A to 1C , the rotation touch phone having the camera includes a body  122 , a folder  121 , and a connection section  123 . The body  122  has a microphone  102 , a key input section  227 , a side key section  226  and an ear-jack  103 . Hall effect ICs  112 ,  113  and  114  are accommodated in the body  122 . The hall effect ICs can detect magnetic material, such as a magnet  111 . Preferably, three hall effect ICs are provided. Two hall effect ICs are accommodated in the body  122  and the remaining one is provided at the connection section  123 . In the present embodiment, two hall effect ICs accommodated in the body  122  are defined as first and second sensors  112  and  113 . The connection section  123  includes a rotary hinge and one hall effect IC. The hall effect IC is provided at an inner portion of the connection section  123  and is defined as a third sensor  114 . In addition, the connection section  123  includes a knob  125  and a camera  250 . The folder  121  has a speaker  101 , the magnet  111  and a first display section  280  having a liquid crystal display (LCD) that can display a first touch screen and on an opposing side a second display section  290  having a liquid crystal display that can display a second touch screen. 
   Although the speaker  101  is generally used for hearing a voice of other users, the speaker  101  according to the present invention has a speakerphone function. The speaker  101  described below is a bi-directional speaker having the function of the speakerphone. In addition, the magnet  111  can comprise any suitable magnetic or magnetizable material. 
   Hereinafter, a rotational state of the folder  121  in the rotation touch phone including the body  122 , the connection section  123 , and the folder  121  will be described. In the following description, a first state signifies a state in which the folder  121  is initially closed, a second state signifies a state in which the folder  121  has been opened in an “A” direction (See  FIG. 1A ), a third state signifies a state in which the folder  121  has been rotated in a “B” direction from the second state (See  FIG. 1B ), and a fourth state signifies a state in which the folder  121  has been closed in a “C” direction from the third state (See  FIG. 1C ). 
   Table 1 shows an operation of the rotation touch phone having the camera according to a position of the folder. 
   
     
       
             
             
             
             
             
           
         
             
               TABLE 1 
             
             
                 
             
             
               State of 
               1st 
               2nd 
               3 rd   
                 
             
             
               folder 
               sensor 
               sensor 
               sensor 
               Operation 
             
             
                 
             
           
           
             
               1 st   
               HIGH 
               LOW 
               LOW 
               1 st  display section OFF, 
             
             
               state 
                 
                 
                 
               2nd display section ON, key input 
             
             
                 
                 
                 
                 
               OFF, first touch screen OFF 
             
             
               2 nd  state 
               LOW 
               LOW 
               LOW 
               1 st  display section ON, 
             
             
                 
                 
                 
                 
               2nd display section ON, key input 
             
             
                 
                 
                 
                 
               ON, first touch screen ON 
             
             
               3 rd  state 
               LOW 
               LOW 
               HIGH 
               1 st  display section ON, 
             
             
                 
                 
                 
                 
               2nd display section ON, key input 
             
             
                 
                 
                 
                 
               ON, first touch screen OFF, rear 
             
             
                 
                 
                 
                 
               speaker ON in communication 
             
             
               4 th  state 
               LOW 
               HIGH 
               HIGH 
               1 st  display section ON, 
             
             
                 
                 
                 
                 
               2nd display section OFF, key input 
             
             
                 
                 
                 
                 
               OFF, first touch screen ON, 
             
             
                 
                 
                 
                 
               speaker ON in communication 
             
             
                 
             
           
        
       
     
   
   Referring to table 1, in the rotation touch phone having the camera, if the magnet  111  reaches the sensors, each sensor displays “HIGH”, and if the magnet  111  is remote from the sensors, each sensor displays “LOW”. Since the folder  121  is closed in the first state, the first display section mounted in the inner part of said folder, the first touch screen  280  and the key input section  227  do not operate. However, the side-key  226  can be operated in order to establish communication. 
   According to embodiments of the present invention, the first display section  280  including a liquid crystal display (LCD) can also function as the first touch screen. However, second display section  290  as well as the first display section  280  also can be used as a second touch screen depending on a user&#39;s selection. Since the folder  121  is opened in the second state, the first and second display sections  280  and  290  and the key input section  227  are on and can be operated. In the third state, in which the folder  121  is rotated an angle of 180 degrees or about 180 degrees from the position of the second state, the first and second display sections and the touch screen are on and can be operated. In addition it is possible to operate the key input  227 . The folder  121  is capable of being rotated 360 degrees. In the second and third states, the first and second display sections  280  and  290  can be used to provide illumination when the rotation touch phone is placed in a camera mode. A method for utilizing the first and second display sections  280  and  290  to provide illumination will be described in detail with reference to  FIG. 6 . As shown in  FIG. 1C , in the fourth state, in which the folder  121  is moved into a closed position from the position in the third state, the first display section  280  and the touch screen  290  can be operated and the second display section  290  does not operate and operation of the key input  227  is impossible due to the phone being in a closed position. An operation of the rotation touch phone having the camera according to a state of the folder  121  will be described in detail with reference to  FIGS. 5 and 6 . 
     FIGS. 1D to 1F  are a front perspective, a rear perspective, and a side view illustrating examples of a rotation touch phone having a camera according to an embodiment of the present invention. Hereinafter, an operation of the camera and a photographing method thereof will be described with reference to  FIG. 1B . 
     FIG. 1D  is a front view of the rotation touch phone showing the first display section  280  and the camera  250  in the second state.  FIG. 1E  is a rear view of the rotation touch phone, in which the camera  250  is rotated via the knob  125  in an “E” direction after the body of the rotation touch phone is rotated at an angle of 180 degrees or about 180 degrees in a “D” direction.  FIG. 1F  is a side view of the rotation touch phone having the camera  250 , in which a “G” direction represents a photographing direction of the camera  250  when the rotation touch phone is maintained as shown in  FIG. 1D , and an “F” direction represents a photographing direction of the camera  250  when the rotation touch phone is maintained as shown in  FIG. 1E . In  FIG. 1F , an “H” direction represents an illumination direction radiated from the second display section  290 , which will be further described later with reference to  FIG. 6 . 
     FIG. 2  is a block diagram illustrating an example of an internal structure of the rotation touch phone having the camera according to an embodiment of the present invention. Hereinafter, the internal structure of the rotation touch phone will be described with reference to  FIGS. 1A and 2 . 
   Referring to  FIG. 2 , an RF section  221  is provided to allow the rotation touch phone to make a communication, e.g., a phone call. The RF section  221  includes an RF transmitter (not shown) for boosting and amplifying the frequency of a transmitted signal, and an RF receiver (not shown) for low-noise amplifying a received signal and reducing the frequency of the received signal. A data processing section  223  includes a transmitter (not shown) for encoding and modulating the transmitted signal and a receiver (not shown) for decoding and demodulating the received signal. In addition, the data processing section  223  comprises a modulator/demodulator (MODEM) (not shown) and a coder/decoder (CODEC) (not shown). An audio processing section  225  reproduces an audio signal output from the data processing section  223  or transmits an audio signal generated from the microphone  102  to the data processing section  223 . 
   The key input section  227  includes the following keys which are not shown input keys for inputting numerical numbers and character information and various functional keys for setting various functions. The key input section  227  has a navigation key for selecting a menu, a call key for making a communication, and an end key for finishing the communication. In addition, according to an embodiment of the present invention, the key input section  227  has the following keys which are not shown a speaker mode selecting key, a speak auto-mode selecting key, a speaker manual-mode selecting key and a camera mode selecting key. A memory  229  includes a program memory (not shown) and a data memory (not shown). The program memory stores programs for controlling an operation of the rotation touch phone having the camera. In addition, the data memory temporarily stores data created when the programs are executed. A control section  210  includes the data processing section  223  and controls the operation of the rotation touch phone having the camera. In addition, the control section  210  controls the operation of a liquid crystal display device  280  and  290 , the key input section  227 , and the touch screen, and allows the rotation touch phone to be placed into a speakerphone mode. 
   The sensor section  231  transfers signals detected by the first to third sensors  112 ,  113  and  114  to the control section  210 . The sensors detect signals as the magnet  111  is detected via movement of the magnet  111  toward the sensors  112 ,  113  and  114 . 
   The camera  250  photographs image data and has a camera sensor (not shown) for converting an optical signal to an electrical signal. The camera sensor includes a charge coupled device (CCD) sensor. It should be appreciated by those skilled in the art that although a camera  250  accommodated in the rotation touch phone is described, it is also possible to install a camera  250  to an exterior of the rotation touch phone without departing from the scope of the present invention. A signal processing section  260  converts a signal output from the camera  250  into an image signal. The signal processing section  260  includes a digital signal processor (not shown). An image processing section  270  generates screen data for displaying the image signal output from the signal processing section  260 . The image processing section  270  transmits the image signal corresponding to sizes of the first and second display sections  280  and  290 , and compresses or expands the image data. 
   The first and second display sections  280  and  290  display messages generated when the programs are executed under the control of the control section  210 . The first and second display sections  280  and  290  include an LCD. In this case, the first and second display sections  280  and  290  include an LCD controller (not shown), a memory for storing data and an LCD display device. If a touch screen type LCD is adopted, the key input section  227  and the LCD serve as an input section. For example, if a speaker manual mode is selected, the user cannot use the key input section  227  in the fourth state. Therefore, the user inputs signals by using the touch screen. The first and second display sections  280  and  290  can be used to provide illumination for the camera  250  when the rotation touch phone is placed in a camera mode in second and third states, which will be described in detail with reference to  FIG. 6 . 
   Hereinafter, the operation of the rotation touch phone having the camera will be described. When placing a call, the user inputs a phone number through the key input section  227  and sets a call outgoing mode. Then, the control section  210  detects the call outgoing mode and processes phone number information through the data processing section  223 , thereby outputting an RF signal through the RF section  221 . If a receiver sends a response signal, the control section  210  detects the response signal through the RF section  221  and the data processing section  223 . Then, a voice communication path is formed by means of the audio processing section  225  so that the user can establish communication with the receiver. In addition, when an incoming call is received, the control section  210  detects the incoming call through the data processing section  223 , thereby generating a ring signal through the audio processing section  225 . Then, if the user responds to the incoming call, the control section  210  establishes the voice communication path through the audio processing section  225 , so that the user can establish communication with the transmitter. In addition, the data input can be performed by using the touch screen in the fourth state. In a communication-waiting mode or when text communication is performed, the control section  210  controls the data processing section  223  in such a manner that character data are displayed in the first and second display sections  280  and  290 . 
     FIG. 3  is a flow chart illustrating an example of an operation of the rotation touch phone in a speaker mode according to an embodiment of the present invention. Hereinafter, a process for setting the speak mode in which a speakerphone can be used will be described with reference to  FIGS. 1A to 1C ,  2  and  3 . 
   Firstly, the control section  210  checks whether or not a key signal is input from the key input section  227  in step  301 . If the input key signal is not a speaker mode selecting key signal, an initial state is maintained. If the input key signal is the speaker mode selecting key signal, a speaker mode image is displayed on the screen in step  302 . The speaker mode selecting key signal is generated when the user pushes a speaker mode selecting key of the key input section  227  or touches the touch screen  291 . The speaker mode selecting key includes a navigation key, a number key, and a special key. Although the present invention is mainly described with reference to key signals of the key input section  227 , key signals of the touch screen are also utilized. In step  302 , the speaker mode image is displayed on the first display section  280  or the second display section  290  under the control of the control section  210 . The first and second display sections  280  and  290  display the speaker mode image as shown in  FIG. 4 . 
     FIG. 4  is a block diagram illustrating an example of the speaker mode image displayed on the screen of the rotation touch phone in a speaker mode according to an embodiment of the present invention. Referring to  FIG. 4 , a speaker mode is divided into a speaker auto-mode and a speaker manual-mode. The user can select the speaker mode by using the key input section  227  or by touching an auto-mode  401  or a manual-mode  402  formed in the touch screen. 
   In step  303 , the control section  210  determines whether or not the key signal is input from the key input section  227 . If the input key signal is not a speaker auto-mode key signal, step  305  is performed. In addition, if the input key signal is the speaker auto-mode key signal, step  304  is performed. The speaker auto-mode key signal is generated when the user pushes a speaker auto-mode key  401  of the key input section  227 . The speaker auto-mode key includes a navigation key for selecting a menu, a number key, and a special key. In step  304 , the control section  210  sets the speaker auto-mode. The speaker auto-mode allows the user to make a communication by using the speaker  101  and the microphone  102 , or by using only the speaker  101  depending on positions (first to fourth states) of the folder  121  in the rotation touch phone having the camera. The speaker auto-mode will be described in detail with reference to  FIG. 5 . 
   In step  305 , the control section  210  determines whether or not the key signal is input from the key input section  227 . If the input key signal is not a speaker manual-mode key signal, step  307  is performed. In addition, if the input key signal is the speaker manual-mode key signal, step  306  is carried out. The speaker manual-mode key signal is generated when the user pushes a speaker manual-mode key  402  of the key input section  227 . The speaker manual-mode key includes a navigation key for selecting a menu, a number key, and a special key. In step  306 , the control section  210  sets the speaker manual-mode. In the speaker manual-mode, the user operates the key input section  227  or the touch screen in order to use the speaker  101  and the microphone  102  (normal communication mode) or to use only the speaker  101  (speakerphone mode) depending on positions (first to fourth states) of the folder  121  in the rotation touch phone having the camera. The speaker manual-mode will be described in detail with reference to  FIG. 5 . 
   In step  307 , the control section  210  determines whether or not predetermined time lapses have occurred. If a predetermined time has passed, the control section  210  performs step  308 . Otherwise, step  302  is performed. The predetermined time lapse refers to the key signal not being input from the key input section  227  during the speaker mode. In step  308 , the control section  210  sets the initial speaker mode. The initial speaker mode refers to the speaker auto-mode or the speaker manual-mode, which has not been previously set. For example, if a previous mode is the speaker manual-mode, a notification “set as initial speaker manual-mode” is displayed in the first display section  280  or in the second display section  290  as shown in  FIG. 4 . 
     FIG. 5  is a flow chart illustrating an example of a method for placing the rotation touch phone in a speakerphone mode of operation according to an embodiment of the present invention. Hereinafter, a method for making communication by using the speakerphone in the speaker auto-mode and speaker manual-mode will be described with reference to  FIG. 5 . An operation of the control section  210  in the speaker auto-mode will be described. 
   In step  501 , the control section  210  determines whether or not the key signal is input from the key input section  227 . If the input key signal is not a communication key signal, an initial state is maintained. If the input key signal is the communication key signal, step  502  is performed. The communication key signal refers to a key signal requiring a communication. The communication key includes an identification key having a side-key, a number key and a special key. 
   In step  502 , the control section determines whether or not an earphone  104  is connected to the ear-jack  103 . If the earphone  104  is not connected to the ear-jack  103 , step  504  is performed. If the earphone  104  is connected to the ear-jack  103 , step  503  is performed. In step  503 , the control section  210  allows the user to make a communication through the earphone  104 . 
   The control section  210  detects a rotational angle (rotational position) of the folder  121  in step  504  and then proceeds to step  505 . The rotational angles (rotational positions) of the folder  121  can be classified into a zero angle, a 180 degree angle, and an angle between zero and 180 degrees. The zero angle represents either the first state or the second state. The 180 degree angle represents either the third state or the fourth state. The angle between zero and 180 degree represents a state in which the folder  121  is being rotated or brought to a halt while being rotated, which corresponds to neither of the first to fourth states. Herein, the angle between zero and 180 degrees can be recognized by means of the third sensor  114 . That is, the angle between zero and 180 degrees represents neither of the first to fourth states but a state in which the third sensor  114  has not detected the magnet  111 . The first to fourth states have been described above. 
   In step  505 , the control section  210  determines whether or not the rotational angle of the folder  121  is zero. If the rotational angle of the folder  121  is not zero, the control section  210  performs out step  511 . In addition, if the rotational angle of the folder  121  is zero, the control section  210  performs step  506 . Checking the rotational angle of the folder  210  by using the control section  210  means that the control section  210  detects the position of the folder  121 . That is, the control section  210  detects signals input from the sensor section  231  having the first to third sensors  112 ,  113  and  114 , thereby determining the first to fourth states of the folder  121 . 
   In step  506 , the control section  210  determines whether or not the sensor section  231  detects the signal from the first sensor  112 . If the sensor section  231  does not detect the signal from the first sensor  112 , step  508  is performed. In addition, if the sensor section  231  detects the signal from the first sensor  112 , the control section  210  performs step  507 . Step  507  represents the first state, in which the folder  121  is closed and only the first sensor  112  detects the magnet  111 . Step  508  represents the second state, in which the folder  121  is opened and none of the first to third sensors  112  to  114  detect the magnet. Then, the sensor section  231  determines whether or not the first sensor  112  has detected the magnet  111 . If the first sensor  112  does not detect the magnet  111 , the sensor section  231  does not transfer a signal to the control section. In addition, if the first sensor  112  detects the magnet  111 , the sensor section  231  transfers a signal to the control section  210  indicating that the sensor section  231  detects the signal from the first sensor  112 . 
   In step  507 , the control section  210  detects the closing of the folder  121  and performs step  509 . In addition, in step  507 , the control section  210  detects the first state of the folder  121 . In step  508 , the control section  210  detects the opening of the folder  121  and performs step  509 . Also, in step  508 , the control section  210  detects the second state of the folder  121 . In step  509 , the control section  210  detects the first or second state of the folder  121 , thereby allowing the user to establish communication through the speaker  101  and a microphone  102 , and then, performs step  510 . That is, in step  509 , the user can establish communication with other users through the speakerphone (speaker  101 ) in the first state. In addition, the user can establish communication with other users through the speakerphone or through the speaker  101  and the microphone  102  in the second state. 
   In step  511 , the control section  210  determines whether or not the rotational angle of the folder  121  is 180 degrees or about 180 degrees. If the rotational angle of the folder  121  is not 180 degrees or about 180 degrees, step  512  is performed. In addition, if the rotational angle of the folder  121  is 180 degrees or about 180 degrees, the control section  210  performs step  513 . Checking the rotational angle of the folder  210  by using the control section  210  means that the control section  210  detects the position of the folder  121 . That is, the control section  210  detects signals input from the sensor section  231  having the first to third sensors  112 ,  113  and  114 , thereby determining the first to fourth states of the folder  121 . Specifically, when the third sensor  114  detects the magnet  111 , the control section decides that the rotational angle of the folder  121  is 180 degrees or about 180 degrees. 
   In step  513 , the control section  210  determines whether or not the sensor section  231  detects signals from the second and third sensors  113  and  114 . If the sensor section  231  detects only the signal from the third sensor  114 , step  515  is performed. In contrast, if the sensor section  231  detects the signals from both the second and third sensors  113  and  114 , the control section  210  performs step  514 . Then, the sensor section  231  determines whether or not the second sensor  113  detects the magnet  111 . If the second sensor  113  does not detect the magnet  111 , the sensor section  231  does not transfer a signal to the control section  210 . In contrast, if the second sensor  114  detects the magnet  111 , the sensor section  231  transfers a signal to the control section  210  indicating that the sensor section  231  has detected the signal from the second sensor  113 . 
   In step  514 , the control section  210  detects the closing of the folder  121  and performs step  516 . In step  514 , the control section  210  detects the fourth state of the folder  121  in which both the second and third sensors  113  and  114  detect the magnet  111 . In step  515 , the control section  210  detects opening of the folder  121  and performs step  516 . In step  515 , the control section  210  detects the third state of the folder  121  in which only the third sensor  114  detects the magnet  111 . In step  516 , the control section  210  detects the third and fourth states of the folder  121 , thereby allowing the user to make a communication through the speakerphone (speaker  101 ), and then, carries out step  510 . 
   In step  510 , the control section  210  determines whether or not the rotational angle of the folder is changing while communication is being established with other users. If the rotational angle of the folder is not changing while communication is being established with other users, the process is finished. In addition, if the rotational angle of the folder is changing while establishing communication with other users, the control section  210  repeatedly performs step  504 . The completion of the process means that step  509  or step  516  is maintained. In addition, the variation of the rotational angle of the folder refers to the user rotating the folder  121  while establishing communication. For example, the user may establish communication with other users in the second state by using the speaker  101  and the microphone  102 . However, if the user rotates the folder  121  at an angle of 180 degrees or about 180 degrees (third state), or closes the rotated folder  121  (fourth state), the control section  210  allows the user to establish communication through the speakerphone (speaker  101 ). That is, the user establishes communication by using the microphone  102  and the speaker in the second state, and establishes communication by using the speakerphone (speaker  101 ) in the third or fourth state. For example, if the folder position is changed from the second state to the third state, the control section  210  automatically converts the rotation touch phone into a speakerphone mode, thereby allowing the user to continuously establish communication with other users. 
   Hereinafter, an operation of the control section  210  in the speaker manual-mode will be described with reference to  FIGS. 1A and 2 . As described above, the first state refers to the folder  121  being closed, the second state refers to the folder  121  being opened in an “A” direction as shown in  FIG. 1A , the third state refers to the folder  121  being rotated in a “B” direction as shown in  FIG. 1A  from the second state, and the fourth state refers to the folder  121  being closed in a “C” direction as shown in  FIG. 1B  from the third state. 
   The speaker manual-mode allows the user to establish communication with other users by using the speaker  101  and the microphone  102 , or by using the speaker  101  through inputting key signals into the key input section  227  or touching the touch screen. The following description is described on the assumption that the user sets the speaker manual-mode and an incoming call is received from a transmitter. 
   Firstly, the control section  210  determines whether or not the key signal of the key input section  227  or the touch signal of the touch screen is input. As a result of the determining, if the input signal is not a response signal for the incoming call, an initial state is maintained. In contrast, if the input signal is the response signal for the incoming call, the control section  210  forms a communication path for allowing the user to make communication with the transmitter. 
   When forming the communication path between the user and the transmitter, if the folder  121  is in the first state, the user opens the folder  121  (second state) to communicate with the transmitter. If the folder  121  is in the second state, the user inputs the key signal of the key input section  227  and the touch signal of the touch screen to communicate with the transmitter. In the third state, the user inputs the key signal of the key input section  227  and the touch signal of the touch screen to communicate with the transmitter. In the fourth state, the user pushes a side-key of the key input section  227  or touches a communication section of the touch screen to communicate with the transmitter. 
   In the fourth state, the user is required to use the speakerphone in order to communicate with the transmitter, so that the user touches a speaker section formed on the touch screen or pushes the key of the key input section to communicate with the transmitter through the speakerphone (speaker  101 ). 
     FIG. 6  is a flow chart illustrating an example of a method for utilizing the display section as an illumination when photographing an object by using the rotation touch phone according to another embodiment of the present invention. Hereinafter, the method for utilizing the first or second display section  280  or  290  as the illumination when photographing the object will be described with reference to  FIGS. 1A ,  1 B,  2  and  6 . 
   Firstly, the control section determines whether or not a camera mode key signal is input from the key input section  227  in step  601 . If the signal input from the key input section  227  is not the camera mode key signal, an initial state is maintained. In addition, if the signal input from the key input section  227  is the camera mode key signal, the control section performs step  602 . In step  602 , the control section converts the rotation touch phone into a camera mode and performs step  603 . The camera mode relates to the photographing work of the camera  250 , and allows the user to easily preview images or conveniently photograph the object. 
   In step  603 , the control section determines whether or not the folder  121  is positioned in the second state. If the folder  121  is not positioned in the second state, step  605  is performed. In addition, if the folder  121  is positioned in the second state, the control section performs step  604 . In the second state, the folder  121  is opened in the “A” direction as shown in  FIG. 1A . In step  604 , the control section controls the second display section  290  in such a manner that the second display section  290  radiates light having a higher brightness. That is, when the photographing direction of the camera  250  is formed in the “F” direction as shown in  FIG. 1F , the control section  210  controls the second display section  290  to radiate light having brightness higher than brightness of general use, thereby facilitating the photographing work of the camera  250 . To recognize the second state of the folder  121 , the control section  210  determines whether or not the sensor section  231  detects signals generated from the first to third sensors  112 ,  113  and  114 . If the sensor section  231  does not detect the signals from the first to third sensors  112 ,  113  and  114 , the sensor section  231  cannot transfer a signal to the control section  210 , so the control section  210  determines that the folder  121  is positioned in the second state. 
   In step  605 , the control section  210  checks whether or not the folder  121  is positioned in the third state. If the folder  121  is not positioned in the third state, the control section  210  finishes the process. In addition, if the folder  121  is positioned in the third state, the control section  210  carries out step  606 . The third state of the folder  121  is achieved by rotating the folder  121  in the “B” direction from the second state as shown in  FIG. 1B . 
   In step  606 , the control section  210  controls the first display section  280  in such a manner that the first display section  280  radiates light having higher brightness. That is, when the photographing direction of the camera  250  is formed in the “F” direction as shown in  FIG. 1F , the control section  210  controls the first display section  280  to radiate light having brightness higher than brightness of general use, thereby facilitating the photographing work of the camera  250 . To recognize the third state of the folder  121 , the control section  210  determines whether or not the sensor section  231  detects signals generated from the first to third sensors  112 ,  113  and  114 . If the sensor section  231  does not detect the signals from the first and second sensors  112  and  113 , but detect the signal from the third sensor  114 , the sensor section  231  transfers a signal to the control section  210  indicating that the sensor section  231  detects the signal from the third sensor  114 , so the control section  210  determines that the folder  121  is positioned in the third state. 
   As shown in  FIG. 1F , if the user photographs the object in the “F” direction by using the camera  250 , the first or second display section  280  or  290  radiates light having brightness remarkably stronger than brightness of general use in the “H” direction. 
   While the invention has been shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.