JP2005123948A - Portable communication terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To independently use a portable communication terminal as a photographic device excellent in portability and operability by making a part of the portable communication terminal attachable/detachable. <P>SOLUTION: The portable communication terminal consists of an attachable/detachable main body part 200 for radio communication and an attachable/detachable main body part 100 for display. The main body part 200 for radio communication has a radio communication circuit 32 which performs the radio communication and a power source 31 which supplies power to the main body part 200 for radio communication. The main body part 100 for display has a camera part 16 for photographing an object, a main display 12 which performs image display based on outputted data from the camera part 16 and the radio communication circuit 32, a nonvolatile memory 41 which stores the outputted data from the camera part 16 and the radio communication circuit 32 and a power source 43 which supplies power to the main body part 100 for display. Then, the object is photographed by the camera part 16 in a state in which the main body part 200 for radio communication is separated from the main body part 100 for display. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a mobile communication terminal, and more particularly to an improvement of a mobile communication terminal having a shooting function for shooting a subject in addition to a wireless communication function, for example, a camera-equipped mobile phone.

  Recent mobile phones have various additional functions in addition to the original call function. In particular, those having an e-mail function and a digital camera function are now becoming mainstream, and are generally called camera-equipped mobile phones. In the case of a camera-equipped mobile phone, a means for making a call, a means for sending and receiving e-mails, and a means for taking a picture of the camera are integrally mounted, thereby reducing the cost of the entire apparatus. At the same time, it is reduced in size and weight.

  For example, a liquid crystal display for displaying an incoming call or a phone book is used as an e-mail editing screen or a browsing screen, and is also used as a viewfinder screen during camera shooting. A non-volatile memory for storing e-mail is also used for recording image data taken by a camera. An operation key used as a dial key during a call is used as a mail editing key and also as a camera photographing key. Furthermore, the speaker for outputting a ringing tone when receiving an incoming call is also used as a means for outputting a shutter sound during photographing. In addition, power sources are shared.

  However, the conventional camera-equipped mobile phone has a problem in operability and portability when used as a digital camera because the mobile phone and the digital camera are integrated. For example, a mobile phone needs to have an operation key and a liquid crystal display on the user side, and an appropriate distance between the call receiver and the call microphone needs to be secured. I do not get. In addition, since it has a projection as an antenna, there is a problem that portability is inferior to that of a single digital camera. In addition to the elongated shape, mobile phone operation keys are also used as release keys, so camera shake is likely to occur during shooting, and it is difficult to reliably align the camera lens with the direction of the subject. There was also a problem.

  As a method for solving such a problem, the camera-equipped mobile phone is separated into a display main unit including a liquid crystal display and a camera unit, and a radio communication main unit including an operation key and a radio communication circuit, and is attached and detached. It is conceivable to make it possible. However, a configuration in which the wireless communication main body cannot receive a call while the display main body is removed is not preferable. On the other hand, if the separated display main body and wireless communication main body are made to function independently as a digital camera and a mobile phone, respectively, there arises a problem that the advantages of the integration described above are impaired.

  Conventionally, there has been a technique for making a part of a mobile communication terminal detachable (for example, Patent Document 1). In the case of the portable information terminal disclosed in Patent Document 1, the liquid crystal display is configured as a display unit that can be attached to and detached from the terminal body, and the liquid crystal display can be replaced. However, this liquid crystal display is only a means for displaying information from the terminal body, and the display unit removed from the terminal body for replacement has no independent function. That is, it is merely a technique that allows one part constituting the portable information terminal to be simply replaced, and does not solve the above-described problem.

Japanese Patent Application No. 2000-404945

  As described above, a conventional mobile communication terminal having a photographing function is provided with a wireless communication unit and a photographing unit as one body, thereby reducing the cost of the entire device. There was a problem that portability was inferior. In addition, in order to improve the operability and portability as a photographing apparatus, it is not easy to make the photographing means detachable.

  The present invention has been made in view of the above circumstances, and an object thereof is to improve portability and operability at the time of shooting of a mobile communication terminal having a shooting function. It is another object of the present invention to provide a portable communication terminal in which an imaging device that can be used independently is removable.

  Another object of the present invention is to provide a mobile communication terminal that notifies the user of an incoming call while the detachable photographing apparatus is being disconnected and prevents a call from being erroneously started in a state where the call cannot be made. . It is another object of the present invention to provide a portable communication terminal that prevents an electronic mail from being lost when a mail reception request is received while a detachable photographing apparatus is disconnected.

  The portable communication terminal according to the present invention is a portable communication terminal comprising a detachable wireless communication main body and a display main body, wherein the wireless communication main body includes wireless communication means for performing wireless communication, and a wireless communication main body. A display unit for displaying an image based on output data from the imaging unit and the wireless communication unit. And a non-volatile memory for storing output data from the imaging means and the wireless communication means, and a second power source for supplying power to the display main body, and disconnecting the wireless communication main body from the display main body In such a state, the subject can be photographed by the imaging means.

  Even if the main body for wireless communication and the main body for display are each provided with a power source, and the main body for display is provided with a non-volatile memory and display means, the display means is used. Thus, the subject can be imaged, and the captured data can be stored in the nonvolatile memory. That is, the subject can be photographed using only the display main body. On the other hand, when both main bodies are connected, output data from the imaging means and the wireless communication means is stored in the nonvolatile memory, and output from the imaging means and the wireless communication means using the display means. Image display based on data can be performed.

  In this way, by adopting a configuration that enables photographing with the wireless communication main body section detached, portability and operability as an imaging device can be dramatically improved. In addition, when the two main body portions are connected, the nonvolatile memory and the display means are shared for wireless communication and photographing, and an increase in cost due to the detachable configuration of the two main body portions can be suppressed.

  Further, in the mobile communication terminal according to the present invention, in addition to the above configuration, the display main body includes one of a call microphone and a call receiver, and the wireless communication main body includes a call microphone and a call microphone. A first detachment detection unit that detects a connection state between the other of the call receivers and the display main body unit, and is operated by the user at the start of the call, and is invalidated based on a detection result of the first detachment detection unit. And an off-hook button.

  By providing one of the call microphone and the call receiver in the wireless communication main body and the other in the display main body, it is possible to ensure ease of use during a call. In this case, by separating the display main body and the wireless communication main body, the call microphone and the call receiver are separated, and a call cannot be made. For this reason, the off-hook button is disabled during the separation of both main body portions. With such a configuration, it is possible to prevent a call from being started in a state where the call microphone and the call receiver are disconnected while ensuring convenience during a call.

  Further, in addition to the above configuration, the mobile communication terminal according to the present invention can be configured so that, when the wireless communication unit receives a mail reception request from a wireless base station, the wireless communication terminal is based on the detection result of the first disconnection detection unit. A mail reception rejection response is transmitted to the station.

  If the wireless communication means receives an e-mail with the display main body disconnected, the e-mail cannot be stored in the nonvolatile memory in the display main body, and the received e-mail is lost. End up. For this reason, when the wireless communication means receives a mail reception request in a state where both main body parts are separated, it prevents a loss of the received electronic mail data by transmitting a mail reception rejection response. Can do.

  Further, in the mobile communication terminal according to the present invention, the display main body section is based on the detection result of the second disconnection detection section and the second disconnection detection section for detecting the connection state with the wireless communication main body section. Power supply switching means for switching the power supply source for the display main body to the first power supply and the second power supply.

  According to such a configuration, while the wireless communication main body and the display main body are disconnected, the power is supplied from the first power source to the wireless communication main body, and from the second power supply to the display main body, respectively. While the two main body portions are connected, power can be supplied from the first power source to the two main body portions. Therefore, even if the second power supply is used up while the display main body separated from the radio communication main body is used as an imaging device, it is possible to perform calls and mail transmission / reception by connecting both main bodies. . Furthermore, photographing can be performed. In addition, by supplying power from the first power supply to the display main body when both main bodies are connected, the second power supply can be reduced in size, and the display main body used as a photographing apparatus can be reduced in weight. The portability and operability can be improved.

  Further, in the mobile communication terminal according to the present invention, the first power source has a larger power storage amount than the second power source. With such a configuration, it is possible to reduce the weight of the main body for display that is separated from the main body for wireless communication and used as a photographing device, and to improve the portability and operability. Further, the weight balance with the wireless communication main body can be maintained. Furthermore, it is possible to prioritize the power supply to the wireless communication main body, which cannot predict in advance when the incoming / outgoing calls will occur, over the display main body being disconnected.

  Further, in the mobile communication terminal according to the present invention, in addition to the above configuration, the wireless communication main body outputs a call microphone to which a transmission sound is input and a ringtone, and also includes a first disconnection detection unit. A second detachment detection unit that has a speaker for a ringing tone that outputs a shooting sound at the time of shooting based on the detection result, and wherein the display main unit detects a connection state with the main unit for wireless communication; In addition to outputting sound, the apparatus has a call receiver that outputs shooting sound at the time of shooting based on the detection result of the second disconnection detection unit.

  According to such a configuration, the shooting sound is output from the incoming speaker during shooting while connected to the wireless communication main unit, while the shooting sound is output from the call receiver during shooting while disconnected from the wireless communication main unit. Can be output. That is, it is possible to suppress an increase in cost due to the configuration in which both the main body portions can be attached and detached by diverting the call receiver without providing a speaker for outputting shooting sound to the display main body portion. In addition, the consumption of the second power supply can be suppressed by using a call receiver with low power consumption.

  In addition to the above configuration, the mobile communication terminal according to the present invention includes a second disconnection detection unit that detects a connection state between the display main unit and the wireless communication main unit, and the display unit includes: Based on the detection result of the second disconnection detection unit, the camera mode is automatically switched to the camera mode when disconnecting from the wireless communication main unit. With such a configuration, it is possible to immediately use the display main body as an imaging device by simply separating the display main body and the wireless communication main body. For example, it is possible to save the trouble of providing a mode switching button on the display main body and operating the button when the display main body is disconnected from the wireless communication main body.

  In addition to the above-described configuration, the mobile communication terminal according to the present invention includes a ring tone speaker that outputs a ring tone during disconnection from the display main unit, and the display main unit. The second disconnection detector for detecting a connection state with the wireless communication main body, and the display means is connected to the wireless communication main body based on the detection result of the second disconnection detector. It is configured to automatically switch to the standby mode when connected. With such a configuration, it is possible to use the mobile communication terminal immediately by simply connecting the display main body and the wireless communication main body. In particular, if an incoming call is received while both main parts are disconnected, a ring tone is output. If both main parts are connected, a call can be started immediately without any operation input for mode switching. Can do.

  In addition to the above-described configuration, the mobile communication terminal according to the present invention provides data communication in which the display main body performs short-range data communication with another communication terminal while being disconnected from the wireless communication main body. Means for storing data received from another communication terminal in the non-volatile memory, or transmitting data stored in the non-volatile memory to another communication terminal. According to such a configuration, it is possible to transmit and receive image data and the like with other communication terminals by a single display main body without being connected to a wireless communication main body having a wireless communication circuit.

  According to the present invention, the display main body and the wireless communication main body can be separated from each other, and the display main body separated from the wireless communication main body can be used independently as a photographing device. Can be provided. In addition, it is possible to provide a mobile communication terminal in which the display main body is separable from the wireless communication main body, and the operability and portability at the time of shooting a subject are improved. It is another object of the present invention to provide a portable communication terminal in which a display main body and a wireless communication main body can be separated while suppressing an increase in cost.

  In addition, according to the present invention, when an incoming call is received while the display main unit and the wireless communication main unit are disconnected, the incoming call is notified to the user, and the call is erroneously started in a state where the call is impossible. A prevented mobile communication terminal can be provided.

  In addition, according to the present invention, it is possible to provide a mobile communication terminal that prevents an email from being lost when a mail reception request is received while the display main body and the wireless communication main body are disconnected.

Embodiment 1 FIG.
FIG. 1 is an external view showing an example of a mobile communication terminal according to Embodiment 1 of the present invention. In FIG. 1, (a) shows the operation surface side of the camera-equipped mobile phone 1, and (b) The side opposite to the operation surface is shown. Hereinafter, the opposite side of the operation surface will be referred to as the back surface. The mobile phone 1 is a foldable mobile phone that can be miniaturized by folding the terminal housing, and both (a) and (b) in the figure show a state in which the terminal housing is opened. Yes.

  The mobile phone 1 includes a wireless communication main body 200 and a display main body 100 that can be attached to and detached from the wireless communication main body 200. The display main body 100 can be attached to the wireless communication main body 200. For example, it becomes a conventional camera-equipped mobile phone. FIGS. 1A and 1B show a state in which the display main body 100 and the wireless communication main body 200 are connected.

  FIG. 2 is a diagram illustrating a state where the display main body 100 and the wireless communication main body 200 of the mobile phone 1 of FIG. 1 are separated, and (a) in FIG. The surface side is shown, and (b) shows a left side view when (a) is a front view. The display main body 100 is separated from the wireless communication main body 200 by the separation surface 300. The display main body 100 separated in this way can be operated independently as a digital camera. On the other hand, the wireless communication main body 200 after disconnection gives an incoming call notification when an incoming call is received, but cannot start a call until the display main body 100 is attached.

  A main display 12 and a call receiver 11 are provided on the operation surface of the display main body 100. The main display 12 is a display means such as a liquid crystal display device, and displays various information related to wireless communication such as a number display at the time of outgoing / incoming calls and a communication state, and is also used as a viewfinder at the time of camera photographing. The call receiver 11 is a speaker for outputting a reception sound during a call, and is used for outputting a shooting sound (shutter sound) when the display main body 100 alone is photographed by the camera.

  A light unit 15, a camera unit 16, and a sub display 17 are provided on the back surface of the display main body unit 100. The camera unit 16 is a photographing unit for photographing a subject, and the light unit 15 is a light emitting unit that is turned on during underexposure photographing, a so-called flash light. The sub-display 17 is a display unit such as a liquid crystal display device, and displays a number display at the time of incoming call, transmission source information at the time of mail reception, or various information related to wireless communication such as a communication state.

  A side light key 13 and a side release key 14 are provided on the side surface of the display main body 100. The sidelight key 13 is an operation key for the user to instruct lighting of the light unit 15. The side release key 14 is an operation key for instructing photographing by the camera unit 16, that is, a shutter key.

  The radio communication main unit 200 further includes a main unit 201, a movable unit 202, and a connecting unit 203 that couples the main unit 201 and the movable unit 202 in a rotatable manner. An operation key unit 21 and a call microphone 22 are provided on the operation surface of the main body unit 201.

  The call microphone 22 is a voice input means for inputting a transmission sound during a call. In general, in order to ensure good call quality, the distance between the call receiver 11 and the call microphone 22 needs to be arranged at a predetermined distance in consideration of the distance between the human ear and the mouth. For this reason, most recent mobile phones have an elongated shape, and a call receiver 11 and a call microphone 22 are provided near both ends thereof. In the case of the foldable mobile phone 1, one is provided in the display main body 100 and the other is provided in the wireless communication main body 200. Therefore, the wireless communication main body 200 from which the display main body 100 is disconnected is in a state in which a call is impossible.

  The operation key unit 22 is an operation key for a user to perform various operation inputs, and includes an off-hook button 24, a camera mode key 21a, a light key 21b, and a release key 21c. The camera mode key 21a is an operation key for shifting the operation mode from the standby mode to the camera mode, and the light key 21b and the release key 21c are operation keys for lighting the light unit 15 and shooting for the camera unit 16, respectively. It is. These operation keys 21a to 21c are enabled during connection with the display main body 100 and disabled during disconnection.

  The off-hook button 24 is also effective while the display main body 100 is connected, but is disabled when the display main body 100 is disconnected. By disabling the off-hook button 24, it is possible to prevent a call from being erroneously started due to an off-hook operation in spite of the inability to make a call. In particular, when an incoming call is received during disconnection, it is possible to prevent the off-hook button from being operated without the display main body 100 being connected.

  On the back surface of the main body 201, a ring tone speaker 23 is provided. The ring tone speaker 23 outputs a ring tone when an incoming call is received, or outputs a mail reception tone when a mail is received to notify the user of the mobile phone 1 of the incoming call or the mail reception. Whether or not to output a ringtone or the like can be determined in advance by the user operating a key of the operation key unit 21. The ring tone speaker 23 outputs a ring tone if there is an incoming call even when the display main body 100 is being disconnected.

  The movable part 202 is connected to the display main body part 100. The disconnecting surface 300 of the movable portion 202 is provided with a connecting recess, and the connector 28 is provided in the connecting recess. On the other hand, the separation surface 300 of the display main body 100 is provided with a connection convex portion to be inserted into the connection concave portion of the movable portion 202, and the connector 18 connected to the connector 28 is provided in the connection convex portion. Is provided. That is, when the display main body 100 and the wireless communication main body 200 are connected, the connection convex portion is inserted into the connection concave portion, and the terminals of the connectors 18 and 28 are electrically connected.

  The connection unit 203 rotatably connects the main body unit 201 and the movable unit 202 so that the mobile phone 1 can be folded. In other words, the terminal housing in which the display main body 100 is attached to the movable portion 202 can be opened and closed, and the main display 12 can be folded with the operation surface on the inner side and opposed to the operation key portion 21 to reduce the size. .

  In general, since it is necessary to ensure operability, there is a limit to downsizing the operation key unit 21, and the size of the folding mobile phone when folded is almost determined by the size of the operation key unit 21. For this reason, if the separation surface 300 is provided closer to the wireless communication main body 200 than the connecting portion 203, the mobile phone becomes larger than the conventional one and the portability is reduced.

  For this reason, in the mobile phone 1 according to the present embodiment, the connecting portion 203 is provided in the wireless communication main body portion 200, and the separation surface 300 is provided on the display main body portion 100 side with respect to the connecting portion 203. Although such a configuration is more advantageous from the viewpoint of achieving both operability and portability, the connecting portion 203 is provided in the display main body 100, and the separation surface 300 is used for wireless communication rather than the connecting portion 203. It can also be provided on the main body 200 side.

  FIG. 3 is a block diagram showing an example of the internal configuration of the wireless communication main body 200 shown in FIG. In the figure, 30 is a main control unit, 31 is a power source, 32 is a wireless communication circuit, 33 is a vibrator, 34 is an audio I / F unit, and 35 is a disconnection detection unit. In addition, the same code | symbol is attached | subjected to the block corresponded to the component shown by FIG.1 and FIG.2.

  The separation detection unit 35 detects the connection state of the display main body unit 100 and the wireless communication main body unit 200 based on the output from the connector 28. When the display main body unit 100 is disconnected from the wireless communication main body unit 200, the disconnection detection unit 35 detects the disconnection, and the detection result is output to the main control unit 30. The main control unit 30 disables the off-hook button 24 in the operation key unit 21 based on the detection result.

  The power source 31 is a secondary battery such as an alkaline ion battery that supplies power to each electric circuit in the wireless communication main body 200. The display main body 100 is provided with another power supply 43 to be described later. However, when the display main body 100 is connected to the wireless communication main body 200, the connectors 18 and 28 are used. Power is also supplied from the power supply 31 to each electric circuit in the display main body 100.

  The wireless communication circuit 32 transmits and receives RF signals to and from a wireless base station (not shown) via an antenna, and performs bidirectional wireless communication. For example, when an incoming call is received, an incoming signal is received from a radio base station, and during a call, a transmitted sound is transmitted and a received sound is received wirelessly. When receiving a mail, the mail data is received after receiving a mail reception request from the radio base station.

  The vibrator 33 is composed of a vibrator having an eccentric weight attached to the rotation shaft of the motor, and drives the motor at the time of incoming call or mail reception to vibrate the wireless communication main body 200. The drive control of the vibrator 33 is performed by the main control unit 30 based on the output of the wireless communication circuit 32. Whether the radio communication main body 200 is vibrated when an incoming call is received or when a mail is received can be determined in advance by the user operating a key of the operation key unit 21. The vibrator 33 vibrates the wireless communication main body 200 if there is an incoming call even when the display main body 100 is being disconnected.

  The voice I / F unit 34 controls the call microphone 22 and the ring tone speaker 23 based on an instruction from the main control unit 30 to perform input / output control of a voice signal. That is, when the wireless communication circuit 32 receives an incoming call signal, a ringtone is output from the ringtone speaker 23. Further, during a call, the transmission sound input from the call microphone 22 is wirelessly transmitted by the wireless communication circuit 32.

  The main control unit 30 includes a microprocessor that controls each block in the wireless communication main body unit 200. When the user operates any key of the operation key unit 21, a key operation signal is output from the operation key unit 21 to the main control unit 30. For example, when a menu operation is performed, the main control unit 30 executes processing according to the menu item selected by the user. In this case, a control signal is output from the main control unit 30 to the display main body unit 100 via the connectors 18 and 28, and a menu designated by the user is displayed on the main display 12. During a call, the received sound received by the wireless communication circuit 32 is output from the main control unit 30 to the display main unit 100 and output from the call receiver 11 in the display main unit 100.

  FIG. 4 is a block diagram showing an example of the configuration inside the display main body 100 of FIG. In the figure, 40 is a sub-control unit, 41 is a non-volatile memory, 42 is an audio I / F unit, 43 is a power supply, 44 is a display control unit, 45 is a disconnection detection unit, and 46 is a power supply switching unit. In addition, the same code | symbol is attached | subjected to the block corresponded to the component shown by FIG.1 and FIG.2.

  The separation detection unit 45 detects the connection state of the display main body unit 100 and the wireless communication main body unit 200 based on the output from the connector 18. When the display main body 100 is disconnected from the wireless communication main body 200, the disconnection detection unit 45 detects the disconnection, and the detection result is output to the sub-control unit 40. The sub-control unit 40 controls the power supply switching unit 46, the audio I / F unit 42, the display control unit 44, and the like based on this detection signal.

  The power supply switching unit 46 switches the power supply source into the display main body unit 100 according to an instruction from the sub-control unit 40. That is, based on the detection result of the disconnection detection unit 45, while being disconnected from the wireless communication main body unit 200, power is supplied from the power supply 43 in the display main body unit 100 while being connected to the wireless communication main body unit 200. During power supply, power is supplied from the power supply 31 in the wireless communication main body 200.

  The power supply 43 is a secondary battery such as an alkaline ion battery, and supplies power to each electric circuit in the display main body 100 via the power supply switching unit 46. Since the power supply 43 is used only when the display main body 100 is disconnected from the wireless communication main body 200, a battery having a smaller storage amount than the power supply 31 can be used.

  By making the power storage amount of the power source 31 larger than that of the power source 43, it is possible to secure the power source preferentially for the wireless communication function rather than the photographing function. For example, even if the power source 43 is used up as a result of shooting using the display main body 100 separated from the wireless communication main body 200, the display main body 100 is connected to the wireless communication main body 200 thereafter. Then you can make calls and send / receive emails. In this case, it is desirable not to perform charging from the power supply 31 even if the power supply 43 is exhausted.

  In addition, by making the amount of power stored in the power supply 31 larger than that in the power supply 43, the weight balance of the mobile phone 1 can be kept good. In general, in mobile phones, the ratio of the weight of the battery to the total weight is large, and the arrangement of the battery greatly affects the weight balance of the entire terminal. For this reason, the battery of a mobile phone is usually stored in a housing portion that the user holds. In the case of the mobile phone 1 according to the present embodiment, it is stored in the main body 201. For this reason, it is possible to use a battery having a large weight for the power supply 31 disposed in the main body 201 and to use a battery having a smaller weight for the power supply 43 disposed in the main body 100 for display. It is desirable to keep

  The audio I / F unit 42 drives the call receiver 11 based on an instruction from the sub-control unit 40, and controls output of received sound and shooting sound. That is, at the time of a telephone call, a reception sound input from the wireless communication main body 200 via the connector 18 is output from the telephone receiver 11. Further, at the time of shooting while being disconnected from the wireless communication main body 200, a shooting sound is output from the call receiver 11.

  The display control unit 44 performs display control of the main display 12 and the sub display 17 based on an instruction from the sub control unit 40, and the main display 12 displays different screens for each operation mode. For example, if the operation mode is the camera mode, a camera mode screen is displayed, and a captured image output from the camera unit 16 is displayed on the main display 12. If in the standby mode, the standby mode screen is displayed.

  The operation mode of the sub-control unit 40 is not only changed based on the user's key operation, but is also changed based on the detection result of the disconnection detection unit 45 when the wireless communication main body unit 200 is attached / detached. When disconnecting from the wireless communication main unit 200, the operation mode of the sub-control unit 40 is automatically shifted to the camera mode. When connecting to the wireless communication main unit 200, the operation mode of the sub-control unit 40 is automatically set. To standby mode. By automatically changing the mode when the display main body 100 is attached / detached, the mode switching operation by the user is unnecessary and the operability is improved.

  That is, the user can automatically switch the main display 12 to the camera mode screen by simply disconnecting the display main body 100 and the wireless communication main body 200 and immediately use the display main body 100 as an imaging device. it can. Further, the main display 12 is automatically switched to the standby mode simply by connecting both the main body units 100 and 200, and can be used immediately as a mobile phone without performing a key operation for mode switching. In particular, when a ring tone is output from the wireless communication main body 200 being disconnected, the telephone call can be started immediately if both the main body portions 100 and 200 are connected and an off-hook operation is performed, which is highly convenient.

  The nonvolatile memory 41 is a rewritable storage means that can retain data even when power is not supplied, and is composed of a semiconductor device such as a flash memory. It can also be configured as a removable memory card. The nonvolatile memory 41 stores mail data and image data. When the wireless communication circuit 32 in the wireless communication main body 200 receives an electronic mail from the wireless base station, the mail data is input to the sub-control unit 40 via the connector 18 and stored in the nonvolatile memory 41. The Further, image data captured by the camera unit 16 is also stored in the nonvolatile memory 41 by the sub-control unit 40.

  The camera unit 16 includes a condensing lens and an image sensor, and always outputs image data in the camera mode. The image data output from the camera unit 16 is displayed on the monitor by the sub-control unit 40 on the main display 12 as a viewfinder. In this state, when the side release key 14 is operated, the sub control unit 40 stores the image data in the nonvolatile memory 41. When the side light key 13 is operated and the light emission mode is set, the sub control unit 40 causes the light unit 15 to emit light when the side release key 14 is operated.

  The sub-control unit 40 includes a microprocessor that controls each block in the display main body 100. Further, the sub-control unit 40 controls each block in the display main body 100 based on an instruction from the main control unit 30 while being connected to the wireless communication main body 200.

  Steps S101 to S108 in FIG. 5 are flowcharts illustrating an example of the operation of the mobile phone 1 when the display main body 100 and the wireless communication main body 200 are attached and detached. When the display main body unit 100 and the wireless communication main body unit 200 are separated, the separation is detected by the separation detection units 35 and 45 (step S101).

  At this time, in the display main unit 100, the power switching unit 46 switches the power supply source to the display main unit 100 to the power source 43 based on the detection result of the disconnection detection unit 45 (step S102). Accordingly, while the display main body 100 is disconnected, the power supply 31 supplies power only to the wireless communication main body 200.

  Further, in the wireless communication main body 200, the off-hook button 24 is invalidated based on the detection result of the disconnection detection unit 35 (step S103). Off-hook operation during disconnection is prevented by disabling the off-hook button.

  Further, based on the detection result of the separation detection unit 45, the operation mode of the sub-control unit 40 is changed to the camera mode, the camera mode screen is displayed on the main display 12, and the side release key 14 is activated (step). S104). For this reason, the image data output from the camera unit 16 is displayed on the main display 12 and the subject can be photographed immediately by operating the side release key 14.

  On the other hand, when the display main unit 100 and the wireless communication main unit 200 are connected, the connection is detected by the disconnection detection units 35 and 45 (step S105). At this time, in the display main unit 100, the power supply switching unit 46 switches the power supply source to the display main unit 100 to the power source 43 based on the detection result of the disconnection detection unit 45 (step S106). Therefore, while the display main body 100 is connected, power is supplied from the power source 31 to the display main body 100 and the wireless communication main body 200, and the power source 43 is not used.

  Further, in the wireless communication main body 200, the off-hook button 24 is activated based on the detection result of the disconnection detection unit 35, and a telephone call is possible (step S107).

  Further, based on the detection result of the separation detection unit 45, the operation mode of the sub-control unit 40 is changed to the standby mode screen, the standby mode screen is displayed on the main display 12, and the side release key 14 is invalidated ( Step S108). For this reason, when an incoming call is received during disconnection, a call can be started immediately by connecting both the main body portions 100 and 200 and operating the off-hook button 24.

  Steps S201 to S210 in FIG. 6 are flowcharts showing an example of the operation of the mobile phone 1 when there is an incoming call.

  First, an operation when there is an incoming call while the display main body 100 and the wireless communication main body 200 are connected will be described. When there is an incoming call while the two main units 100 and 200 are connected, an incoming call sound is output from the incoming call speaker 23 or the vibrator 33 is vibrated to make an incoming call (steps S201 and 202).

  If the user operates the off-hook button 24 during the incoming call, a call is started (steps S204 and S205). Thereafter, when the call ends, the process ends (step S206). The incoming call is repeated until the user performs an off-hook operation. However, if the caller cancels the call before the off-hook operation, the process ends (step S203).

  Next, an operation when the mobile phone 1 receives an incoming call while the display main body 100 and the wireless communication main body 200 are disconnected will be described. Even when there is an incoming call while the two main body parts 100 and 200 are separated, an incoming call is made by the incoming call sound or vibration (step S207).

  At this time, if the user connects both main body portions 100 and 200, the off-hook button 24 that has been invalidated is activated (steps S208 and S209). Therefore, after that, if the off-hook button 24 is operated, a call can be started (steps S204 to S206). On the other hand, when the user does not connect the main body units 100 and 200, the calling party stops the call, and the process is terminated (step S210).

  FIG. 7 is a sequence diagram illustrating an example of a signaling procedure when the mobile phone 1 receives an e-mail.

  A server (not shown) that has received an e-mail addressed to the mobile phone 1 transmits a mail reception request M1 to the mobile phone 1 via the radio base station. This mail reception request M1 is a message that prompts the mobile phone 1 to receive mail, and is received by the wireless communication circuit 32 in the wireless communication main body 200.

  At this time, if the display main body 100 and the wireless communication main body 200 are connected, the wireless communication circuit 32 transmits a mail transmission request M3 to the server as a response to the mail reception request M1. The server that has received this mail transmission request M3 transmits mail data M4 to the mobile phone 1 via the radio base station.

  On the other hand, if the display main body 100 and the wireless communication main body 200 are being disconnected, the wireless communication circuit 32 transmits a mail reception rejection response M2 to the server. The server that has received this mail reception rejection response M2 stands by without transmitting the mail data M4. For this reason, it is possible to prevent the mobile phone 1 from receiving e-mail and losing mail data in a state where both the main body portions 100 and 200 are disconnected and writing into the nonvolatile memory 41 cannot be performed. be able to.

  Thereafter, when both the main body units 100 and 200 are connected, a mail transmission request M3 is transmitted from the mobile phone 1 to the server. The server that has received this mail transmission request M3 transmits mail data M4 to the mobile phone 1 via the radio base station. If the cellular phone 1 that has sent the rejection response M2 can receive mail, if the mail transmission response M3 is sent to the server 1, it is not necessary for the server to repeatedly send a mail reception request, reducing the load on the server. can do.

  Steps S301 to S306 in FIG. 8 are a flowchart illustrating an example of the operation of the mobile phone 1 when receiving a mail. This mail reception process is started when the wireless communication circuit 32 receives a mail reception request (step S301).

  A case where the display main body 100 and the wireless communication main body 200 are separated at the time of receiving this mail reception request will be described (step S302). In this case, since the mobile phone 1 cannot store the received mail, the main control unit 30 automatically transmits a mail reception rejection response to the server via the wireless communication circuit 32 (step S303). By transmitting this reception rejection response, the server is informed that the mobile phone 1 is in a state where it cannot receive mail, and instructs not to send mail.

  Thereafter, when the display main unit 100 and the wireless communication main unit 200 are connected, a mail transmission request is automatically transmitted to the server (steps S304 and S305). In response to the mail transmission request, the mobile phone 1 is informed to the server that the mail can be received and instructed to send the mail. The server that has received the mail transmission request from the mobile phone 1 transmits an e-mail to the mobile phone 1. The wireless communication circuit 32 that has received the electronic mail stores the mail data in the nonvolatile memory 41 via the connectors 28 and 18, and the cellular phone 1 ends the processing (step S306).

  Next, a case where the mobile phone 1 receives a mail reception request while the display main body 100 and the wireless communication main body 200 are connected will be described. In this case, the cellular phone 1 immediately transmits a mail transmission request to the server (step S305). Then, the electronic mail is received from the server, the mail data is stored in the nonvolatile memory 41, and the mobile phone 1 ends the process (step S306).

  In the present embodiment, an example in which a mail transmission request is automatically transmitted when the display main body 100 and the wireless communication main body 200 are connected has been described. However, the present invention is not limited to such a case. . For example, when the mobile phone 1 receives a mail reception request while the both main body portions 100 and 200 are disconnected, a mail transmission request is then made based on a user operation after the both main body portions 100 and 200 are connected. You may make it transmit.

  Steps S401 to S410 in FIG. 9 are a flowchart illustrating an example of the operation of the mobile phone 1 when shooting. Steps S406 to S410 show the operation in the camera mode. In the camera mode, the sub-control unit 40 causes the main display 12 to display the image data constantly output from the camera unit 16 on the monitor. If the user views the display and operates the release key 21c or the side release key 14, a shooting sound is output (S407 to S409), and the image data is stored in the nonvolatile memory 41 (step S410).

  The output of the photographic sound is output from the ring tone speaker 23 of the wireless communication main body 200 when the display main body 100 and the wireless communication main body 200 are connected, and during the disconnection, the display main body 100 is output. Is output from the call receiver 11.

  Since the photographing process shown in FIG. 9 is executed in the camera mode, if the operation mode is the camera mode, the process proceeds to step S406. That is, when the display main body 100 and the wireless communication main body 200 are disconnected, the camera mode is selected, and the process proceeds to step S406 (step S401). Even if the display main body 100 and the wireless communication main body 200 are connected, if the operation mode is the camera mode, the process proceeds to step S406 in the same manner (step S402).

  When the display main unit 100 and the wireless communication main unit 200 are connected and not in the camera mode, if the user operates the camera mode key 21a, the operation mode shifts to the camera mode. That is, after enabling the release key 21c and the side release key 14, the process proceeds to step S406 (steps S404 and S405). On the other hand, if the user does not operate the camera mode key 21a, the process ends.

  In the present embodiment, an example in which image data captured by operating the release key 21c or the side release key 14 is automatically stored in the nonvolatile memory 41 has been described. It is not limited to the case. For example, the user after shooting may select whether to save image data. In this case, the captured image data may be displayed on the main display 12, and a message for inquiring whether or not to store the image data may be displayed on the main display 12 to the user who has confirmed this.

Embodiment 2. FIG.
In the present embodiment, in addition to the above configuration, the mobile phone 1 that can perform short-range data communication with another communication terminal using the display main body 100 separated from the radio communication main body 200. Will be described.

  FIG. 10 is a block diagram showing a configuration example inside the display main body 100 according to the second embodiment of the present invention. Compared with the case of FIG. 3 (Embodiment 1), the display main body 100 is different in that a wired communication circuit 47 and a wireless communication circuit 48 are newly provided in the display main body 100. Note that the blocks shown in FIG. 3 are denoted by the same reference numerals and description thereof is omitted.

  The wired communication circuit 47 has a data input / output terminal (not shown), and another communication terminal is detachably connected to the data input / output terminal. Based on an instruction from the sub-control unit 40, bidirectional communication with the communication terminal can be performed. In addition, the wireless communication circuit 48 can perform bidirectional wireless communication with other communication terminals based on an instruction from the sub-control unit 40.

  The reception data of the wired communication circuit 47 and the wireless communication circuit 48 is stored in the nonvolatile memory 41 by the sub control unit 40. Further, the data stored in the nonvolatile memory 41 is read out by the sub-control unit 40 and transmitted from the wired communication circuit 47 or the wireless communication circuit 48 to another communication terminal.

  Power is supplied from the power supply 31 with a small amount of stored electricity into the display main body 100 separated from the radio communication main body 200. For this reason, the wireless communication circuit 48 preferably has low power consumption. That is, it is desirable that the wireless communication is short-distance communication with lower transmission power than the wireless communication circuit 32 in the wireless communication main body 200. Such communication includes, for example, Bluetooth and infrared communication. Since these near field communication communicates directly between the communication terminals without going through the wireless base station, it is possible to save power.

  According to such a configuration, it is possible to transmit / receive image data and the like to / from other communication terminals by the display main body unit 100 alone without being connected to the wireless communication main body unit 200. Note that short-range communication using the wired communication circuit 47 and the wireless communication circuit 48 can be used not only during disconnection from the wireless communication main body 200 but also during connection.

It is the external view which showed an example of the portable communication terminal by Embodiment 1 of this invention. FIG. 2 is a diagram illustrating a state where a display main body 100 and a wireless communication main body 200 of the mobile phone 1 of FIG. 1 are separated. FIG. 2 is a block diagram illustrating a configuration example inside a wireless communication main body 200 in FIG. 1. FIG. 2 is a block diagram illustrating a configuration example inside the display main body 100 in FIG. 1. 4 is a flowchart showing an example of the operation of the mobile phone 1 when the display main body 100 and the wireless communication main body 200 are attached and detached. 5 is a flowchart showing an example of the operation of the mobile phone 1 when there is an incoming call. It is the sequence diagram which showed an example of the signaling procedure in case the mobile telephone 1 receives mail. 5 is a flowchart showing an example of the operation of the mobile phone 1 when receiving mail. 4 is a flowchart showing an example of the operation of the mobile phone 1 when shooting. It is the block diagram which showed one structural example inside the display main-body part 100 by Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cellular phone 11 Call receiver 12 Main display 13 Sidelight key 14 Side release key 16 Camera part 21 Operation key part 23 Ringer speaker 24 Off-hook button 30 Main control part 31 Power supply 32 Wireless communication circuit 35 Disconnection detection part 40 Sub control Unit 41 Non-volatile memory 43 Power supply 45 Disconnection detection unit 46 Power supply switching unit 100 Display main unit 200 Wireless communication main unit 300 Disconnect surface

Claims (9)

In a portable communication terminal comprising a removable wireless communication main body and a display main body,
The wireless communication main body has wireless communication means for performing wireless communication, and a first power supply for supplying power to the wireless communication main body,
The display main body stores image pickup means for photographing a subject, display means for displaying an image based on output data from the image pickup means and the wireless communication means, and output data from the image pickup means and the wireless communication means. A non-volatile memory and a second power source for supplying power to the display main body,
A portable communication terminal characterized in that a subject can be photographed by an imaging means in a state in which a wireless communication main body is separated from a display main body. The display main body has one of a call microphone and a call receiver,
The wireless communication main body includes the other of the call microphone and the call receiver,
A first disconnection detection unit for detecting a connection state with the display main body unit;
The mobile communication terminal according to claim 1, further comprising an off-hook button that is operated by a user at the start of a call and is invalidated based on a detection result of the first disconnection detection unit.   The wireless communication means, when receiving a mail reception request from a wireless base station, transmits a mail reception rejection response to the wireless base station based on a detection result of the first detachment detection unit. 2. The mobile communication terminal according to 2. The display main body includes a second disconnection detection unit that detects a connection state with the wireless communication main body,
The mobile communication according to claim 2, further comprising power switching means for switching a power supply source for the display main body between the first power source and the second power source based on a detection result of the second disconnection detection unit. Terminal.   The mobile communication terminal according to claim 4, wherein the first power source has a larger amount of charge than the second power source. The wireless communication main body includes a call microphone to which a transmission sound is input,
A ring tone speaker that outputs a ring tone and outputs a shooting sound at the time of shooting based on the detection result of the first separation detection unit;
The display main body includes a second disconnection detection unit that detects a connection state with the wireless communication main body,
The mobile communication terminal according to claim 2, further comprising: a call receiver that outputs a received sound and outputs a shooting sound during shooting based on a detection result of the second disconnection detection unit. The display main body includes a second detachment detection unit that detects a connection state with the wireless communication main body,
3. The mobile communication terminal according to claim 2, wherein the display unit automatically switches to a camera mode when disconnected from the main body for wireless communication based on a detection result of the second disconnection detection unit. The wireless communication main body has a ringtone speaker that outputs a ringtone during disconnection from the display main body,
The display main body includes a second detachment detection unit that detects a connection state with the wireless communication main body,
3. The portable communication terminal according to claim 2, wherein the display means automatically switches to a standby mode when connected to the wireless communication main body based on the detection result of the second disconnection detector. The display main body has data communication means for performing short-range data communication with other communication terminals during disconnection from the wireless communication main body.
The mobile communication terminal according to claim 2, wherein data received from another communication terminal is stored in the non-volatile memory, or data stored in the non-volatile memory is transmitted to another communication terminal.

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