JP2009296518A - Display device, display content switching method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device, a display content switching method and a program, capable of simplifying handsfree operating procedures. <P>SOLUTION: The display device 20 capable of selecting a screen arrangement state between a first state and a second state includes: an external equipment detecting means 25 for detecting the connection of external equipment 4; an information acquiring means 23 for acquiring information from the external equipment 4 when the external equipment detecting means 25 detects the connection of the external equipment 4; a screen state detecting means 26 for detecting whether the screen arrangement state is the first state or the second state; and a display control means 27 for displaying at least a part of the information acquired by the information acquiring means 23 on a screen when a change in the screen arrangement state is detected by the screen state detecting means 26 after the connection of the external equipment 4 is detected by the external equipment detecting means 25. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a display device, a display content switching method, and a program.

  While driving a car, it is prohibited to make a call by directly touching a mobile phone terminal according to the Road Traffic Law. However, using the hands-free function, it is allowed to make a call without touching the mobile phone terminal. A hands-free device for realizing such a hands-free call is disclosed in Patent Document 1.

  This hands-free device is used by connecting a mobile phone terminal. When a mobile phone terminal is connected to the hands-free device, information stored in the mobile phone terminal is transferred to the hands-free device. The buttons of the hands-free device correspond to the buttons of the mobile phone terminal. Thereby, it is possible to operate the large button of the hands-free device instead of the small button of the mobile phone terminal. For this reason, the driver can perform the outgoing operation of the mobile phone terminal safely and reliably even while driving the automobile.

  FIG. 17 is a flowchart showing an operation procedure when the hands-free device is used. As shown in FIG. 17, first, a hands-free button is pressed (step S40). Subsequently, the telephone directory or the incoming / outgoing call history is called (step S41). Subsequently, a destination is selected (step S42). Finally, the call button is pressed (step S43). Thereby, the calling process is executed (step S44).

  Further, Patent Document 2 discloses an apparatus in which destinations are sequentially displayed by voice. According to this, the driver does not need to look at the list of destinations. Therefore, safer driving can be performed.

JP 2004-134777 A JP-A-10-190810

  Such a hands-free device is useful in reducing the burden on the driver. However, the driver needs to execute a plurality of procedures as shown in FIG. Therefore, it would be useful if some of these procedures could be omitted.

  The present invention has been made under such a background, and an object of the present invention is to provide a display device, a display content switching method, and a program capable of simplifying a hands-free operation procedure.

  The display device according to the present invention includes an external device detection unit that detects connection of an external device and a display unit that can select a first state and a second state of the screen arrangement state. When the connection of the external device is detected, information acquisition means for acquiring information from the external device, screen state detection means for detecting whether the screen arrangement state is the first state or the second state, and external device detection means Display control means for displaying on the screen at least a part of the information acquired by the information acquisition means when the screen status detection means detects a change in the screen arrangement state after detecting the connection of the external device. It is characterized by.

  At this time, the external device is a mobile phone terminal, and the display control means displays at least a part of the information acquired by the information acquisition means on the screen and then again without performing the outgoing operation of the mobile phone terminal. When the change of the screen arrangement state is detected by the screen state detection means, predetermined image information can be displayed on the screen. For example, the predetermined image information is key board image information.

  In addition, the display control unit is configured when a predetermined operation input is not performed even when the screen state detection unit detects a change in the screen arrangement state after the external device detection unit detects the connection of the external device. Can prohibit the display of information acquired by the information acquisition means.

  The present invention can also be viewed from the viewpoint of a display content switching method. That is, the display content switching method of the present invention detects the connection of an external device in the display content switching method performed by the display device capable of selecting the screen layout state between the first state and the second state. Step, when detecting the connection of the external device, the step of acquiring information from the external device, the step of detecting whether the screen arrangement state is the first state or the second state, and detecting the connection of the external device After that, when a change in the arrangement state of the screen is detected, there is a step of displaying on the screen at least a part of the information acquired by the acquiring step.

  At this time, if a predetermined operation input is not performed even when a change in the screen arrangement state is detected after detecting the connection of an external device, the information acquired in the information acquisition step is displayed. Can be prohibited.

  The present invention can also be viewed from the viewpoint of a program. That is, by installing the program of the present invention on the information processing apparatus, the information processing apparatus can function as a display device capable of selecting the first and second screen layout states. Information acquisition that acquires information including the phone book and incoming / outgoing history from this external device when the external device detection function detects the connection of the external device. Screen state detection function that detects whether the function and the screen layout state are in the first state or the second state, and after the external device detection function detects the connection of the external device, When a change in state is detected, a display control function for displaying at least a part of the information acquired by the information acquisition function on the screen is realized.

  According to the present invention, the hands-free operation procedure can be simplified.

  A display device according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram showing a screen 1 in the display device 20. 2 and 3 are diagrams illustrating an example of a method for detecting the arrangement state of the screen 1. FIG. 4 is a block configuration diagram of the display device 20 according to the embodiment of the present invention. The display device 20 according to the embodiment of the present invention is mainly used during traveling of the vehicle. Therefore, in the embodiment of the present invention, the display device 20 is a car navigation device. Here, the car navigation device also includes a PND (Personal Navigation Device). However, the application range of the present invention is not limited to the car navigation device. For example, a vehicle-mounted television receiver may be used. Alternatively, a device similar to the hands-free device of Patent Document 1 may be used.

  As shown in FIG. 1, the display device 20 according to the embodiment of the present invention includes a housing 20 a having a rectangular outer frame and a rectangular screen 1. In addition, the display device 20 includes a first state (FIG. 1A) that is an arrangement state of the screen 1 in which the long side of the rectangle is in the horizontal direction, and a screen 1 in which the short side of the rectangle is in the horizontal direction. A second state (FIG. 1B) that is an arrangement state can be selected. Further, the display device 20 switches display contents according to the arrangement state of the screen 1. Here, the first state is referred to as a horizontally long arrangement. The second state is referred to as a vertically long arrangement. In the usage example as the car navigation device, the display range can be changed by changing from the horizontally long layout to the vertically long layout. For example, a road ahead that is not displayed in FIG. 1A is displayed in FIG. The vertical and horizontal directions of the image are also changed according to the vertical and horizontal directions of the screen 1.

  FIG. 2 shows a state in which the housing 20a is viewed from the back side. In this example, an attachment portion for attaching the housing 20 a to the support portion 2 is used as the rotation switch 40. The rotation switch 40 includes two contact points 41 and 42. If the contact point 43 on the main body side of the screen 1 is connected to the contact point 41, the screen 1 is determined to be horizontally long (solid line: FIG. 1A). If it is connected to the contact 42, it is determined that the screen 1 is arranged vertically (broken line: FIG. 1B).

  Also, only one of the contact 41 or the contact 42 can be used. If only the contact point 41 is used, it can be determined that if the main body side contact point 43 is connected to the contact point 41, it is determined to be horizontally long, and if not connected, it is determined not to be horizontally long position. “Not in landscape orientation” means either diagonal orientation or portrait orientation. However, in this case, it is determined that the screen is vertically long and the screen display is vertically long. If only the contact 42 is used, the horizontally long screen display is continued unless the main body contact 43 is connected to the contact 42.

  FIG. 3 is a diagram illustrating another example of a method for detecting the arrangement state of the screen 1. FIG. 3 shows an example using a G sensor (acceleration sensor). In order to make the positional relationship correspond to FIG. 2, FIG. 3 also shows the housing 20 a as seen from the back surface. The G sensor outputs 1G when in the vertical direction and 0G because no gravitational acceleration is applied when in the horizontal direction. Therefore, it is assumed that the G sensor is in the horizontal direction when the arrangement state of the screen 1 is horizontally long. Further, when the arrangement state of the screen 1 is a vertically long arrangement, the G sensor is set to face in the vertical direction. The value of the gravity acceleration G and the inclination θ of the G sensor have a relationship of G = sin θ. The method using the G sensor does not require the support 2. For example, the display device 20 can be stood and used.

  In FIGS. 2 and 3, the screen 1 has been described on the assumption that the right side is downward when the screen 1 is tilted. However, the display screen can be similarly switched when the left side is down or when either the right side or the left side is down.

  As shown in FIG. 4, the display device 20 according to the embodiment of the present invention includes an external device detection unit 22 that detects connection of the mobile phone terminal 4. In addition, the display device 20 includes an information acquisition unit 23 that acquires information including a telephone directory and outgoing / incoming call history from the mobile phone terminal 4 when the external device detection unit 22 detects the connection of the mobile phone terminal 4. . Note that the mobile phone terminal 4 and the display device 20 are connected via an external device connection unit 25. The information acquired by the information acquisition unit 23 is stored in the storage unit 24. A connector 3 (see FIG. 5) can be connected to the external device connection portion 25.

  In addition, the display device 20 includes a screen state detection unit 26 that detects whether the arrangement state of the screen 1 is horizontally long (FIG. 1A) or vertically long (FIG. 1B). Furthermore, when the display device 20 detects a change in the arrangement state of the screen 1 by the screen state detection unit 26 after the external device detection unit 22 detects the connection of the mobile phone terminal 4, the information acquired by the information acquisition unit 23 is displayed. Is provided with a display control unit 27 for displaying at least a part of the image on the screen 1.

  The display control unit 27 is connected to the screen 1 and the audio output unit 30. An operation unit 31 is provided. For example, the operation unit 31 is a touch panel integrated with the screen 1. Since the display device 20 is a car navigation device, the display device 20 includes a route search unit 28. The control unit 21 controls each unit. Moreover, the memory | storage part 24 which stores map data is provided. The storage unit 24 may be a semiconductor memory or a recording device using a DVD (Digital Video Disk) or a CD (Compact Disk). In the case of so-called communication navigation, map data may be placed on a server outside the figure, and the display device 20 may fetch the map data from the server as necessary. In this case, instead of the storage unit 24, a map data acquisition unit or a communication unit with the server is provided.

(First embodiment of display content switching operation)
Next, the display content switching operation associated with the vertical / horizontal switching of the screen 1 will be described with reference to FIGS. FIG. 5 is a diagram for explaining the connection between the mobile phone terminal 4 and the display device 20. As shown in FIG. 5A, the mobile phone terminal 4 and the display device 20 are connected using the connector 3. The connector 3 may be included in the external device connection unit 25. The external device detection unit 22 confirms the connection between the mobile phone terminal 4 and the display device 20. As a result, as shown in FIG. 5B, the mobile phone terminal connection confirmation display 10 appears on the screen 1.

  Next, description will be made with reference to FIG. FIG. 6 is a diagram illustrating how the arrangement state of the screen 1 is changed. As shown in FIG. 6, the arrangement state of the screen 1 is changed from the horizontally long layout (FIG. 6A) to the vertically long layout (FIG. 6B). The screen state detection unit 26 detects a change in the arrangement state of the screen 1. As a result, the telephone directory and the outgoing / incoming history acquired by the information acquisition unit 23 from the mobile phone terminal 4 are displayed on the screen 1. Such a display form is called list display. Note that the telephone directory and outgoing / incoming call history information are stored in the storage unit 24. The driver touches the scroll bar 5 on the display screen of FIG. 6B and selects a destination. The driver presses the transmission button 6 when the transmission destination can be selected. Thereby, the transmission process of the mobile phone terminal 4 is performed. In addition, regarding the change of the arrangement state (horizontal state → vertically long state or vertically long state → horizontal state), if it is a rotation operation of the screen 1 in the PND, it can be operated without paying attention to the screen. .

  As described above, in the procedure described with reference to FIG. 17, step S <b> 40 (hands-free button pressing) and step S <b> 41 (phone book or history call) can be linked to the vertical / horizontal switching of the screen 1. Therefore, steps S40 and S41 that have been conventionally required can be substantially omitted.

  The above procedure is shown in the flowchart of FIG. The control unit 21 monitors the connection of the mobile phone terminal 4 by the external device detection unit 22 (step S1). Here, the control unit 21 detects the connection of the mobile phone terminal 4 by the external device detection unit 22 (Yes in step S2). At this time, the control unit 21 instructs the display control unit 27 to perform the mobile phone terminal connection confirmation display 10 on the screen 1 (step S3). Further, the control unit 21 receives information from the mobile phone terminal 4 by the information acquisition unit 23 (step S4). When the information acquisition unit 23 completes the reception of information from the mobile phone terminal 4 (Yes in step S5), the control unit 21 stores this information in the storage unit 24.

  The control unit 21 monitors the arrangement state of the screen 1 by the screen state detection unit 26 (step S6). The arrangement state of the screen 1 is changed from the horizontal arrangement to the vertical arrangement (Yes in step S7). Subsequently, the control unit 21 controls the display control unit 27 to display information stored in the storage unit 24 on the screen 1. As a result, the phonebook and outgoing / incoming call history are displayed in a list on the screen 1 (step S8). Here, when the call button on the operation unit 31 is pressed (step S9), a call process is performed on the mobile phone terminal 4 (step S10).

  When the mobile phone terminal 4 is not connected (No in Step S2), or when the arrangement state of the screen 1 is not changed even if the mobile phone terminal 4 is connected (No in Step S7), the display device 20 is Continue to operate as a car navigation device.

(Second embodiment of display content switching operation)
Next, a second embodiment of the display content switching operation that accompanies the vertical / horizontal switching of the screen 1 will be described with reference to FIGS. FIG. 8 is a diagram for explaining the hands-free setting button 11. As shown in FIG. 8, in the second embodiment, a hands-free setting button 11 is displayed on the screen 1. The operation unit 31 is a touch panel integrated with the screen 1. Therefore, when the driver presses the hands-free setting button 11 on the screen 1, the operation unit 31 is operated. The operation of the operation unit 31 is transmitted to the control unit 21.

  FIG. 9 is a diagram showing switching of display contents when the hands-free setting button 11 is pressed. When the hands-free setting button 11 is pressed, this is the same as the display content switching in FIG. 6 of the first embodiment.

  FIG. 10 is a diagram illustrating display content switching when the hands-free setting button 11 is not pressed. The case where the hands-free setting button 11 is not pressed is the same as the case where the mobile phone terminal 4 is not connected. Accordingly, the display device 20 continues to operate as a car navigation device.

  FIG. 11 is a diagram illustrating switching of display contents when the hands-free setting button 11 is pressed in a state where the screen 1 is in the vertically long layout, and the screen 1 is in the horizontally long layout after the hands-free setting button 11 is pressed. In the case of FIG. 11, a telephone directory and outgoing / incoming histories are displayed as a list on the horizontally long screen 1.

  The above procedure is shown in the flowchart of FIG. The control unit 21 monitors the connection of the mobile phone terminal 4 by the external device detection unit 22 (step S20). Here, the control unit 21 detects the connection of the mobile phone terminal 4 by the external device detection unit 22 (Yes in step S21). At this time, the control unit 21 instructs the display control unit 27 to perform the mobile phone terminal connection confirmation display 10 on the screen 1 (step S22). Furthermore, the control part 21 receives information from the mobile phone terminal 4 by the information acquisition part 23 (step S23). When the information acquisition unit 23 completes the acquisition of information from the mobile phone terminal 4 (Yes in step S24), the control unit 21 stores this information in the storage unit 24. In the second embodiment, when the hands-free setting button 11 is not pressed here (No in step S25), the display device 20 continues to operate as a car navigation device.

  Here, the hands-free setting button 11 is pressed (Yes in step S25). In response to this, the control unit 21 monitors the arrangement state of the screen 1 by the screen state detection unit 26 (step S26). Here, the screen 1 is changed from the landscape orientation to the portrait orientation or from the portrait orientation to the landscape orientation (Yes in step S27). In response to this, the control unit 21 controls the display control unit 27 to display the information stored in the storage unit 24 on the screen 1. As a result, the phone book and outgoing / incoming call history are displayed in a list on the screen 1 (step S28). Here, when the call button on the operation unit 31 is pressed (Yes in Step S29), the control unit 21 performs a call process on the mobile phone terminal 4 (Step S30).

  When the mobile phone terminal 4 is not connected (No in step S21) or when the mobile phone terminal 4 is connected and the hands-free setting button 11 is pressed and the usage mode of the screen 1 is not changed (step) The display device 20 continues to operate as a car navigation device.

(Third embodiment of display content switching operation)
Next, as a third embodiment, the display content switching operation associated with the vertical / horizontal switching of the screen 1 will be described with reference to FIGS. 13 and 14. FIG. 13 is a diagram showing a process until the key board 7 is displayed on the screen 1. As shown in FIG. 13, in the third embodiment, the keyboard 7 is displayed at the time of the horizontal arrangement.

  FIG. 13A shows the display device 20 in use as a car navigation device. FIG. 13B shows a state in which the screen 1 is switched from the navigation display to the list display. Here, it is assumed that the call button 6 is not pressed during the list display of FIG. Furthermore, it is assumed that the screen 1 is switched from the vertically long layout to the horizontally long layout. At this time, in the third embodiment, as shown in FIG. 13C, the key board 7 is displayed on the horizontally long screen 1. This keyboard 7 is convenient when using SMS (Short Message Service) or the like.

  The above procedure is shown in the flowchart of FIG. The control unit 21 monitors the connection of the mobile phone terminal 4 by the external device detection unit 22 (step S40). Here, the control unit 21 detects the connection of the mobile phone terminal 4 by the external device detection unit 22 (Yes in step S41). At this time, the control unit 21 instructs the display control unit 27 to perform the mobile phone terminal connection confirmation display 10 on the screen 1 (step S42). Further, in response to this, the control unit 21 receives information from the mobile phone terminal 4 by the information acquisition unit 23 (step S43). When the information acquisition unit 23 completes the reception of information from the mobile phone terminal 4 (Yes in step S44), the control unit 21 stores this information in the storage unit 24. Here, when the hands-free setting button 11 is not pressed (No in Step S45), the display device 20 continues to operate as a car navigation device. In the third embodiment, the hands-free setting button 11 need not be provided.

  Here, the hands-free setting button 11 is pressed (Yes in step S45). Receiving this, the control part 21 monitors the arrangement | positioning state of the screen 1 by the usage pattern detection part 26 (step S46). Here, when the screen 1 is changed from the landscape orientation to the portrait orientation or from the portrait orientation to the landscape orientation (Yes in step S47), the control unit 21 controls the display control unit 27 and stores it in the storage unit 24. The stored information is displayed on the screen 1. As a result, the screen 1 displays a list of phone books and outgoing / incoming histories (step S48). Here, when the call button 6 of the operation unit 31 is pressed (No in step S49), a call process is performed on the mobile phone terminal 4 (step S54).

  Here, it is assumed that the transmission button 6 of the operation unit 31 is not pressed (Yes in step S49). The control unit 21 monitors the arrangement state of the screen 1 by the usage pattern detection unit 26 (step S50). Here, when the screen 1 is changed from the vertically long layout to the horizontally long layout (Yes in step S51), the control unit 21 displays the key board 7 on the screen 1 (step S52). Here, if the call button 6 of the operation unit 31 is pressed after performing a predetermined input operation (Yes in step S53), a call process is performed on the mobile phone terminal 4 (step S54).

(Supplement to each embodiment)
In the flowcharts of FIG. 7, FIG. 12, and FIG. However, there is a case where the process is stopped without making a call. In such a case, for example, a reset button (not shown) is pressed. Thus, a procedure such as returning to the navigation display may be added.

  FIG. 15 is a diagram showing an embodiment using the wireless transceiver 8. As shown in FIG. 15, the connection between the mobile phone terminal 4 and the display device 20 can be performed by a wireless line using the wireless transceiver 8. As the wireless line, for example, Bluetooth (registered trademark) is used. By using such wireless communication, the screen can be changed without worrying about the cable.

  FIG. 16 is a diagram showing an embodiment in which the portable music terminal 9 and the display device 20 are connected. In the example of FIG. 16, not the mobile phone terminal 4 but the mobile music terminal 9 is connected to the display device 20. When the portable music terminal 9 is connected to the display device 20, the information acquisition unit 23 acquires information on the music menu from the portable music terminal 9. This information is stored in the storage unit 24.

  As shown in FIG. 16B, the music menu is displayed when the landscape orientation is changed to the portrait orientation. After selecting the music menu, the performance is started by pressing the performance button 12. The performance of the music is output by the audio output unit 30.

(Example of the program)
An example of a program that realizes the function of each unit in the display device 20 of the present embodiment by installing in the information processing device will be described. Here, the information processing apparatus is a general-purpose computer apparatus. The general-purpose computer device is, for example, a CPU (Central Processing Unit).

  By recording the program of this embodiment on a recording medium, the information processing apparatus can install the program of this embodiment using this recording medium. Or the program of a present Example can also be installed in an information processing apparatus directly from the server holding the program of a present Example via a network.

  Thereby, using the information processing apparatus, the control unit 21, the external device detection unit 22, the information acquisition unit 23, the storage unit 24, the screen state detection unit 26, the display control unit 27, the route in the display device 20 of the present embodiment. The function of the search unit 28 can be realized. Note that other functions that can be realized by software may also be realized by the program of this embodiment.

  The program of this embodiment includes not only a program that can be directly executed by the information processing apparatus but also a program that can be executed by being installed on a hard disk or the like. Also included are those that are compressed or encrypted.

  While the embodiments of the present invention have been described above, various modifications can be made without changing the gist of the present invention. For example, in the above embodiment, the housing 20a of the display device 20 is rectangular and the screen 1 is rectangular. However, the housing 20a is rectangular, but the screen 1a may be square. In this case, the usage pattern of the screen 1a is square in both the vertical and horizontal directions, but the vertical and horizontal directions are determined on the housing side.

  Further, in the second embodiment, it has been described that the list display is not performed when the screen 1 is changed from the horizontally long arrangement state to the vertically long arrangement state without pressing the handsfree setting button 11. However, if the hands-free setting button 11 is pressed after the screen 1 is changed from the landscape orientation state to the portrait orientation state without pressing the hands-free setting button 11, a list display may be performed at that time. Good.

  As the list display, the phone book and the outgoing / incoming history may be displayed, the outgoing call history and the incoming call history may be two, or two of them and the telephone book. Also, instead of list display, only one display may be used, and the display may be switched from one to the next by scrolling, or only the latest outgoing telephone number and the latest incoming telephone number may be displayed. Good.

  Furthermore, when rotating from the landscape orientation to the right, the phone book list is displayed, and when rotating from the landscape orientation to the left, the incoming / outgoing call history list is displayed. May be changed. That is, instead of two types of screen layouts, three types may be used, or four types may be used, and the display content may be changed according to each mode, or may be the same.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a diagram illustrating a display device according to an embodiment of the present invention. FIG. 3A is a diagram in which a screen is arranged horizontally, and FIG. It is a figure which shows an example of the method of detecting the usage condition of the screen in the display apparatus shown in FIG. It is a figure which shows the other example of the method of detecting the usage condition of the screen in the display apparatus shown in FIG. It is a block block diagram of the display apparatus shown in FIG. FIGS. 2A and 2B are diagrams illustrating connection between the display device and the mobile phone terminal illustrated in FIG. 1, in which FIG. 1A illustrates a state before connection, and FIG. 2B illustrates a state after connection. FIGS. 2A and 2B are diagrams illustrating a change in the usage pattern of the screen in the display device illustrated in FIG. 1. FIG. 2A is a diagram illustrating a navigation display state, and FIG. It is a flowchart which shows the process sequence of the control part which concerns on 1st embodiment of the switching operation | movement of the display content in the display apparatus shown in FIG. It is a figure explaining the hands-free setting button in the display apparatus shown in FIG. 2A and 2B are diagrams showing switching of display contents when a hands-free setting button is pressed in the display device shown in FIG. 1, FIG. 3A is a diagram showing a navigation display state, and FIG. FIGS. 1A and 1B are diagrams showing switching of display contents when the hands-free setting button is not pressed in the display device shown in FIG. 1, and FIG. It is. In the display device shown in FIG. 1, (A) is a diagram showing a navigation display state, and (B) is a list when a hands-free setting button is pressed after the screen is arranged vertically. It is a figure which shows a display state. It is a flowchart which shows the process sequence which concerns on the control part of 2nd embodiment of the switching operation | movement of the display content in the display apparatus shown in FIG. FIGS. 2A and 2B are diagrams showing a process until the key board is displayed on the screen in the display device shown in FIG. 1, in which FIG. 1A shows a navigation display state, FIG. 1B shows a list display state, and FIG. It is a figure which shows a display state. It is a flowchart which shows the process sequence of the control part which concerns on 3rd embodiment of the switching operation | movement of the display content in the display apparatus shown in FIG. It is a figure which shows embodiment which used the radio | wireless transmitter / receiver for communication with the display apparatus shown in FIG. 1, and a mobile telephone terminal. 1A and 1B are diagrams showing an embodiment in which the display device shown in FIG. 1 is connected to a portable music terminal. FIG. 1A is a diagram in which a screen is arranged horizontally, and FIG. It is a flowchart which shows the operation procedure at the time of using the conventional hands-free apparatus.

Explanation of symbols

1 screen, 2 support part, 3 connector, 4 mobile phone terminal, 5 scroll bar, 6 call button, 7 key board, 8 wireless transceiver, 9 mobile music terminal, 10 mobile phone terminal connection confirmation display, 11 hands-free setting Buttons, 12 performance buttons, 20 display device, 20a housing, 21 control unit, 22 external device detection unit (external device detection unit), 23 information acquisition unit (information acquisition unit), 24 storage unit, 25 external device connection unit, 26 screen state detection unit (screen state detection unit), 27 display control unit (display control unit), 28 route search unit, 30 voice output unit, 40 rotary switch, 41, 42, 43 contact

Claims (7)

In the display device in which the screen arrangement state is selectable between the first state and the second state,
An external device detection means for detecting the connection of the external device;
When the external device detection means detects the connection of the external device, an information acquisition means for acquiring information from the external device;
A screen state detecting means for detecting whether the arrangement state of the screen is the first state or the second state;
After the external device detection unit detects the connection of the external device, when the screen state detection unit detects a change in the screen arrangement state, at least a part of the information acquired by the information acquisition unit is displayed on the screen. Display control means for
A display device comprising: The external device is a mobile phone terminal,
After the display control means displays at least a part of the information acquired by the information acquisition means on the screen, the screen state detection means again performs the transmission of the screen without performing the outgoing operation of the mobile phone terminal. When a change in the arrangement state is detected, predetermined image information is displayed on the screen.
The display device according to claim 1.   The display device according to claim 2, wherein the predetermined image information is image information of a keyboard.   The display control unit does not perform a predetermined operation input even when the screen state detection unit detects a change in the screen arrangement state after the external device detection unit detects the connection of the external device. 4. The display device according to claim 1, wherein display of information acquired by the information acquisition unit is prohibited. In the display content switching method performed by the display device capable of selecting the first state and the second state of the screen arrangement state,
Detecting the connection of an external device;
When detecting the connection of an external device, acquiring information from the external device;
Detecting whether the arrangement state of the screen is the first state or the second state;
A step of displaying at least a part of the information acquired by the acquiring step on the screen when detecting a change in the arrangement state of the screen after detecting the connection of the external device;
A display content switching method characterized by comprising:   Even if a change in the layout state of the screen is detected after the connection of an external device is detected, display of the information acquired in the step of acquiring the information is prohibited when a predetermined operation input is not performed. The display content switching method according to claim 5. By installing on an information processing device,
In a program that realizes a function as a display device capable of selecting the first state and the second state of the screen arrangement state,
An external device detection function that detects the connection of an external device;
When this external device detection function detects connection of an external device, an information acquisition function for acquiring information including a telephone directory and outgoing / incoming call history from the external device;
A screen state detection function for detecting whether the arrangement state of the screen is the first state or the second state;
After the external device detection function detects a connection of an external device, when the screen state detection function detects a change in the screen arrangement state, at least a part of the information acquired by the information acquisition function is displayed on the screen. Display control function to
A program characterized by realizing.

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