JP2006339690A - Information display apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information display apparatus for executing a program processing at a low load in a manner of not causing confusion when a plurality of people possess mobile phones respectively. <P>SOLUTION: A mobile phone for managing a system comprising a plurality of mobile phones is determined among the mobile phones and the determined mobile phone collectively controls the whole system. The mobile phone managing the system is provided with a locator function, or a mobile phone possessed by a driver is preferentially selected as the mobile phone for managing the system. Functions of a program executed by the mobile phones are divided into the locator function, a display function, a voice reproduction function, an operating function, an image generating and transferring function, and a telephone management function, and the respective mobile phones share the processing according to their processing loads. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a portable information terminal that efficiently presents information to a user and an information display device that displays the information.

  In general, a display of a mobile phone is basically unsuitable for displaying a large amount of information at a time because the display frame is basically narrow. In particular, when navigation is performed with a mobile phone, the visibility of information is low because the screen is narrow, and it is inconvenient as a display device of a navigation device that cannot gaze at or operate the screen while traveling. Therefore, as a system for transmitting display information from a mobile phone and receiving / displaying it on an external device, techniques described in Japanese Patent Application Laid-Open Nos. 2003-244289 and 2002-162920 have been proposed.

JP 2003-244289 A JP 2002-162920 A

  In the above-described conventional technique in which the screen of a mobile terminal represented by a mobile phone is displayed on an external display device having a larger display area, the relationship between the mobile phone and the external display device is made to correspond one-to-one. For this reason, the number of mobile phone owners is increasing today, and when such mobile phone owners run apps on their own, external display devices for the number of mobile phones cannot be prepared. In this case, since one external display device is shared by a plurality of mobile phones, there is a possibility that the user may be confused. Especially in car navigation devices, for example, when different destinations are set for each of a plurality of mobile phones, there is a possibility that it is not possible to know which destination the guidance display or guidance voice utterance output from the external display device is traveling to. is there. Also, in the operation, if different destinations are set in a plurality of mobile phones, the user may erroneously recognize the actually set destination.

  Conversely, if you try to transfer data to multiple external display devices using a single mobile phone, the processing will be concentrated on a single mobile phone, which may increase the processing load and power consumption and hinder application execution. is there.

  Therefore, an object of the present invention is to distribute the processing load when outputting operation screens of a plurality of mobile phones to an external information display device, avoiding concentration of processing impossibility on one mobile phone, and An information display device that avoids contention when performing operations independently on multiple mobile phones and performs application operations that do not cause confusion even when multiple people own mobile phones Is to provide.

  The present invention includes a plurality of mobile phones having a program execution function having a screen display function, an operation input function, and a communication function, and one of the mobile phones regulates the program operation of another mobile phone. It has the management function to perform.

  In addition, the program execution function of the mobile phone is divided into an audio playback function, a screen display function, an operation input function, a communication function, and an overall control function. The overall control function has a function for enabling or disabling each function. A mobile phone having a management function has an overall system control function that can enable or disable each function of each mobile phone by controlling the overall control function of each mobile phone. The overall control function of the mobile phone has a function of determining the location of the mobile phone.

  The overall system control function of the mobile phone is a means for detecting the processing load of the mobile phone having the management function and the voice playback function of the mobile phone having the management function when the processing load increases, The voice playback function is enabled in any one of them. The operation input function of each mobile phone has information indicating the priority of the operation in the entire system, and the system overall control function includes a conflict detection means for detecting that the operation input of each mobile phone has competed, and a conflict detection means When a conflict is detected, the operation input function of the low-priority mobile phone is disabled according to the priority of the operation.

  The overall control function of each mobile phone has state detection means for detecting the state of the mobile phone, and the overall system control function allows the mobile phone when the status of each mobile phone cannot continue processing in the system. The function for performing processing in the system is disabled, and the function is enabled in another mobile phone capable of the function. When the status of a mobile phone having a management function makes it impossible to continue the management function, the mobile phone having the management function performs the management function proxy for another mobile phone that can perform the management function. Send necessary information. When the state of all the mobile phones having the management function or the proxy function of the management function makes the management function unable to continue, the mobile phone having the management function terminates the entire system. The overall system control function determines whether the screen display function and the operation input function are valid or invalid according to the location of the mobile phone and vehicle information.

  In addition, there is an external display device that displays image information transmitted from the mobile phone. The mobile phone shares processing for creating image information to be displayed on the external display device according to an instruction from the mobile phone having a management function. The external display device transmits image information to another external display device according to an instruction from a mobile phone having a management function. When there are a plurality of external display devices, the overall system control function designates the ID of the mobile phone that is the image transmission source and the ID of the external display device that is the transmission destination, and the external display device for the mobile phone Command to send image information. The external display device has information that it is either the driver's seat or the rear seat, and the overall system control function includes the passenger seat / rear seat boarding discrimination function, and the external display device exists in the rear seat and the rear seat When no one is on board, the rear seat image transmission function is canceled.

  According to the present invention, when there are a plurality of mobile phones, the main mobile phone is determined, and the main mobile phone performs overall control, so that unified guidance guidance can be performed in cooperation with other mobile phones. Even when a plurality of people own mobile phones, it is possible to perform application operations without causing confusion.

  Further, by dividing the application function in the mobile phone and sharing the function with other mobile phones, the processing load on the application function can be reduced.

  Furthermore, when processing of the application function cannot be continued due to a low battery level in the mobile phone, the entire system can be made robust by transferring the processing to another mobile phone.

  An embodiment when the information display device according to the present invention is applied to a car navigation system will be described with reference to the drawings.

FIG. 1 shows the overall configuration of a system according to an embodiment of the present invention. This system uses GPS
(Global Positioning System) satellite 3, base station 6, network 8 and mobile phones 100 and 102, external display devices 110 and 111, ECU brought into the car 1
(Electric Control Unit) 12.

  The external display devices 110 and 111 are for displaying information of the mobile phones 100 and 102, and the operation input to the external display device and the display of the external display device are performed by wireless communication between the mobile phone and the external display device. Information and signals representing vehicle information from the ECU are transmitted and received, but wired communication may also be used. The ECU 12 has a function of performing electronic control of the automobile, and information for collecting a vehicle speed signal, a parking brake signal, a seating condition of the seat, specifically, a seat belt lock-on signal is acquired via the ECU.

The mobile phone 100 includes a mobile phone display 1000 for displaying information in the mobile phone, a wireless antenna 1001 for communicating with an external display device, a GPS receiving antenna 1002 for receiving positioning radio waves from the GPS satellite 3, and a base station 6 A call antenna 1003 is provided for performing communication for transmitting a request from the mobile phone 100 to the mobile phone 100 and receiving information necessary for route guidance from the server 20. The external display device 110 is equipped with a transmission / reception antenna 1100 for performing wireless communication with a mobile phone.

  FIG. 2 is a system configuration diagram in the automobile 1.

  In addition to the cellular phone display 1000, the cellular phone 100 includes a processing unit 1050, a wireless communication unit 1060 that communicates with an external display device, a wireless communication unit 1070 that communicates with a base station, a GPS unit 1080, an audio output device 1090, An operation input device 1091 is provided. The processing unit 1050 includes an external display screen creation function 1051 and a mobile phone display function 1052 in order to create a screen or audio information output from the mobile phone 100 or the external display device 110. The external display screen creation function 1051 creates content information for an external display device to be displayed on the display unit 1102 of the external display device 110. The mobile phone display function 1052 creates mobile phone content information output on the mobile phone display 1000. The wireless communication unit 1060 for the external display device exchanges information with the external display device 110 through the wireless antenna 1001 for the external display device, and content information including the screen or audio information created by the external display screen creation function 1051 And the vehicle information collected through the ECU 12 and the input information from the operation input unit 1104 of the external display device 110 are received.

  The wireless communication unit 1070 transmits a request for information to the server 20 via the base station 6 and receives response information from the server 20. The GPS unit 1080 converts the positioning radio wave received by the GPS receiving antenna 1002 from the GPS satellite 3 into GPS data for processing by the locator function. The voice output device 1090 extracts voice data corresponding to the screen created by the mobile phone display function 1052 and outputs it as voice. The operation input device 1091 has a role of receiving an operation input to the mobile phone 100, converting the operation input into a signal, and transmitting the signal to the operation input function. Examples of the operation input device 1091 include a remote controller, a keyboard, a mouse, a touch panel, and a microphone.

  The external display device 110 includes a display unit 1102 that displays the content information for the external display device, a vehicle information collection unit 1103 that collects vehicle information such as a vehicle speed signal and a parking brake signal from the ECU 12, and an operation to the external display device 110. An operation input unit 1104 that receives input and converts the operation input as a signal is received, and content information output from an external display device is received, and a wireless communication unit 1101 that transmits collected vehicle information and operation input is provided. ing.

  Functions included in the processing unit 1050 of the mobile phone 100 include a locator function, a mobile phone display function 1052, a voice reproduction function, an operation input function, an external display screen creation function 1051, an overall control function, an overall system control function, an owner discrimination function, There is a telephone management function.

  The locator function is a function of positioning absolute coordinates on the ground surface by GPS data based on positioning radio waves received by the GPS receiving antenna 1002 built in the mobile phone 100, or a parking brake signal transmitted from the ECU 12 and the vehicle speed. This is a function of receiving information by the transmission / reception antenna 1001 and measuring the relative coordinates of the automobile 1 or the mobile phone 100 using the information. Further, when the mobile phone 100 incorporates map information, it is possible to provide a map match function for calculating which road or facility in the map using the map information.

The mobile phone display function 1052 is a function for displaying information in the mobile phone 100 as an image on the mobile phone display 1000. The mobile phone display function in the mobile phone 100 is divided into a driver seat display function, a passenger seat display function, and a rear seat display function. The display function for the driver's seat is a function for displaying on the mobile phone display 1000 when the owner of the mobile phone 100 is in the driver's seat. In order to prevent the driver from gazing at the mobile phone display 1000 during driving, the display is simpler than other display functions. The display function for the front passenger seat is a display function when the owner of the mobile phone 100 is in the front passenger seat, and is a function for displaying a screen on the mobile phone display 1000. When the user is in the passenger seat, it often assists the driver's navigation, and is therefore characterized by being displayed in more detail than other display functions. The rear seat display function is a display function when the owner of the mobile phone 100 is in the rear seat, and is a function of displaying a normal screen on the mobile phone display 1000.

  The voice reproduction function is a function for reproducing, for example, a guidance voice by the voice output device 1090 using the voice output function of the mobile phone 100. In the case of the guidance voice output, the voice such as “It is about 100 m ahead right”, “Near the destination” is reproduced. This voice reproduction may be performed either when the waveform data of the guidance voice is reproduced or when the guidance voice is generated by voice synthesis from the text information of the guidance content. The operation input function is a function for receiving a key operation signal converted by the operation input device 1091 of the mobile phone 100 and performing processing corresponding to each operated key. The external display screen creation function is a function for creating an image to be displayed on the external display device 110 and transferring the image to the external display device 110.

  The overall control function is a function that controls each function in the mobile phone 100 and controls whether to operate each function. For example, when it is desired to stop the guidance voice reproduction at the time of route guidance, the overall control function can stop the voice output by stopping only the voice reproduction function. The overall system control function is a function for controlling which function is enabled on which mobile phone among the mobile phones 100 to 102. With this overall system control function, it is possible to enable or disable other mobile phone display functions and guided voice playback functions.

  The owner discriminating function is a function for determining the correspondence relationship between the seat of the mobile phone 100 and the seated person in the vehicle, and whether the mobile phone operator is a driver or a person in the front passenger seat. This is a function for determining whether there is a person in the rear seat. In order to realize this function, there is a method of connecting to a cradle connector provided on the seat and discriminating the seat from the correspondence between the ID read from the cradle connector and the seat. As another means, there is a method in which each mobile phone user is allowed to input his / her seat to be identified. The third point is for a person who sits in the driver's seat with the mobile phone 100 with a built-in unlocking code by applying information on whether the owner is a driver in advance to the mobile phone 100 or applying an anti-theft function. There is a way to judge.

  The telephone management function detects internal states such as what state the mobile phone 100 is in, for example, whether or not a call is in progress, how much battery power is left, how much processing is being performed, and whether other programs are running. Means.

  The processing unit 1106 of the external display device 110 has a display function, a communication function, an operation input function, a seat information storage function, and a vehicle information collection function. The display function is a function for displaying an image transmitted from the mobile phone 100 or an image rendered by the external display device 110 itself. The communication function is a function of performing communication with the mobile phone 100 or another external display device 111 by the wireless communication unit 1101. In addition to receiving an image from the mobile phone 100, the communication function displays the image on the other external display device 111. And a function of receiving an image transmitted from another external display device 111. The operation input function is a function that receives an operation input to the operation input unit 1104.

  The seat information storage function is a function of storing seat information indicating whether the external display device 110 is attached to the driver's seat or the rear seat in the storage unit 1105 and reading out the information. The seat information is created, for example, when a person who has attached the external display device 110 manually inputs the information at the time of attachment. The vehicle information collection function is a function of collecting information from the ECU 12, such as a parking brake signal, an ON / OFF signal of a seat belt of each seat, and a vehicle speed signal, by the vehicle information collection unit 1103.

  FIG. 3 shows a configuration diagram of the function management data 26 used for management by the overall control function of the mobile phone 100. The function management data 26 includes a system main flag 261, a locator function valid flag 262, a mobile phone display display function information 263, a guidance voice reproduction function valid flag 264, an operation input function information 265, and an external display screen creation / transfer function information 266. Owner identification information 267 and telephone management information 268 are stored.

  The system main flag 261 is information indicating whether or not the mobile phone 100 has system management authority. Basically, one of the mobile phones that can be used in the car, the system main flag 261 is turned on. Only. The locator function valid flag 262 is information indicating whether or not the locator function is valid and whether or not the mobile phone 100 is equipped with the locator function. The mobile phone display display function information 263 is information indicating whether or not to enable display on the mobile phone display 1000 and what information to display if it is enabled. The guidance voice reproduction function valid flag 264 is information indicating whether or not the guidance voice reproduction function is validated by the voice reproduction function. The operation input function information 265 includes information on whether or not the operation input function is valid, and information such as a priority order when operations compete. The external display screen creation / transfer function information 266 is information indicating which screen is displayed on the external display device 110 and to which other external display device the screen is transferred. Further, the display screen of the external display device 110 also includes information on which position the image is displayed by designating the upper end, lower end, left end, right end, etc. or the coordinate position of the screen. The owner determination information 267 is created by the owner determination function, and includes seat information for determining whether the owner of the mobile phone 100 is a driver, a person in the front passenger seat, or a person in the rear seat. The telephone management information 268 stores information on the operation state of the mobile phone 100 such as processing load, remaining battery level, whether or not a call is in progress, and whether or not other programs are being activated.

  FIG. 4 shows a configuration diagram of the system function management data 27 used in the system overall control function. The system function management data 27 includes the number of mobile phones 271, the mobile phone function management data 26 described above, seat information 272, and external display device management information 23.

  The mobile phone number 271 indicates the number of mobile phones registered in the system. The seat information 272 indicates whether or not there is a passenger in each seat, and is created by each seat seat belt ON / OFF signal from the ECU 12 or a seat seat weight meter.

  The external display device management information 23 is for managing the information of the external display devices 110 and 111. The number of external display devices 231 and the number of external display device information 232 corresponding to the number of external display devices are 0 or more sets of external display devices. The inter-screen transfer information 233 includes zero or more sets of mobile phone-external display screen transfer information 234.

  The external display device information 232 is information regarding the function of each external display device, and stores a driver seat or rear determination flag 2321, an external display device ID 2322, and operation input function information 2323. The driver seat or rear determination flag 2321 is information indicating whether the corresponding external display device is installed on the driver seat side or the rear seat side, and is created by the seat information storage function in the external display device. Information is received through the wireless communication unit 1060 and stored. The external display device ID 2322 is an ID of the external display device allocated by the overall system control function. The operation input function information 2323 includes the type of operation input device of the corresponding external display device, information indicating whether or not the operation input function is valid, and the priority order when the operation of the operation input device of the external display device competes. Etc. are included.

  The screen transfer information 233 between external display devices is information for designating a transfer destination and a transfer source when transferring an image from one external display device 110 to another external display device 111. The transfer destination external display device ID 2331, the transfer source An external display device ID 2332 is stored.

The screen transfer information 234 between the mobile phone and the external display device is information for designating a transfer destination and a transfer source when transferring an image from the mobile phone 100 to the external display device 110. The transfer destination external display device ID 2341, the transfer source mobile device Phone ID 2342 and transmitted image ID that is the ID of the image to be transferred
2343 is stored.

FIG. 5 shows a guided sound reproduction method in the system in the automobile 1 described above. In this example, there are three mobile phones that can be used in the car, mobile phones 103, 104,
105. Further, the system main flag 261 in the function management data 26 is ON only for the mobile phone 103, and the system main flag 261 of the other mobile phones 104 and 105 is OFF. It is assumed that the mobile phone that manages the mobile phone 103 is the mobile phone 103. The guidance information is assumed to be output from the mobile phone 103. That is, the guidance voice playback function valid flag 264 of the mobile phone 103 is ON, the guidance voice playback function valid flag 264 is OFF for the other mobile phones 104 and 105, and the mobile phone 103 plays back the guidance voice. Is supposed to do. Here, when the system load of the mobile phone 103 increases, the mobile phone 103 compares the respective system loads with reference to the telephone management information 268 of the own device and other mobile phones using the overall system control function. A mobile phone 105 with a low load is selected. Then, the guidance voice reproduction function valid flag 264 of the own device is turned off, the guidance voice reproduction function validity flag 264 of the mobile phone 105 selected via the wireless communication unit 1060 is turned on, and guidance voice reproduction is performed on the cellular phone 105. I will make it.

FIG. 6 shows the operation at the time of operation input and when the operation input competes in the system in the automobile 1 described above. In this example, there is a mobile phone 103 that can be used and two external display devices 112 and 113 in the vehicle. In the initial state, any of the mobile phone 103 or the external display devices 112 to 113 can be operated and input. To do. In this case, when the overall system control function detects an operation input conflict between the mobile phone 103 and the external display devices 112 and 113, the overall system control function performs the operation input function information 265 of the mobile phone 103 and the external display device. The operation input function information 2323 of each of 112 and 113 is checked. In the operation input function information 265 of the mobile phone 103 and the operation input function information 2323 of each of the external display devices 112 and 113, the operation input function is valid only for the mobile phone or external display device with high priority, and other mobile phones or external devices. Disable the operation input function of the display device. In this example, since the operation input competes between the external display device 112 on the driver's seat side and the external display device 113 on the rear seat, the operation input of the external display device 113 whose priority is set low is changed to be impossible. Yes. The conflict of operation input is that a series of operations in which a cancel button is selected on another mobile phone or external display device after the OK button is pressed on one mobile phone or external display device continue many times. This is detected by determining the overall system control function of the mobile phone whose system main flag is ON. The operation restriction due to the conflict is released when a series of inputs is completed.

  FIG. 7 shows an example in which the external display screen creation / transfer function information 266 is applied to car navigation. The external display screen creation / transfer function information 266 includes map display screen information 2661, TBT (Turn-by-turn) display screen information 2662, reach distance display screen information 2663, intersection enlarged view display screen information 2664, lane information display screen. Information 2665 and destination setting display screen information 2666 are stored. The map display screen information 2661 is information indicating whether or not to transfer a map display screen such as a map around the current location. The TBT display screen information 2662 is information indicating whether or not to transfer a traveling direction arrow display screen at the next guidance point, for example, an intersection. The reach distance display screen information 2663 is information indicating whether to transfer the distance to the next guidance point or the reach distance display screen to the destination. The intersection enlarged map display screen information 2664 is information indicating whether or not to transfer an enlarged map display screen near the intersection at the guidance point. The lane information display screen information 2665 is information indicating whether or not to perform a lane of a road that is running and a lane to be traveled on the route. The destination setting display screen information 2666 is information indicating whether or not to transfer a screen to be displayed when setting the destination. These pieces of information 2661 to 2666 also include information for designating a screen transfer position and display area.

  In FIG. 8, screens created by a plurality of mobile phones 106, 107, and 108 are transferred to the external display device 110 and synthesized by the external display device 110, and the synthesized image is further transferred to another external display device 117. It is the figure which showed the operation example of the system of transferring. In this example, when route guidance is performed independently for each of a plurality of mobile phones 106, 107, 108, the guidance screens for each mobile phone are aggregated into one external display device and displayed on a plurality of external display devices. This is an example. In the mobile phone 106, only the TBT display screen information 2662 and the reach distance display screen information 2663 are ON in the external display screen creation / transfer function information 266, so that the TBT image and the reach distance display image 301 are displayed on the mobile phone. 106 created by an external display screen creation function 1051 106 and transferred to the external display device 110 via the wireless communication unit 1060. In the cellular phone 107, the intersection enlarged map display screen information 2664 and the lane information display screen information 2665 are ON for the display screen at the time of guidance in the external display screen creation / transfer function information 266. The screen and the image 302 of the lane information display screen are created by the external display screen creation function 1051 of the mobile phone 107 and transferred to the external display device 110 via the wireless communication unit 1060. In the mobile phone 108, only the map display screen information 2661 is ON in the external display screen creation / transfer function information 266, so the map display screen image 303 is created in the same manner as in other mobile phones. Forward. In the display function of the external display device 110, each mobile phone is referred to by referring to the transfer position / area information stored in the corresponding display screen information of the external display screen creation / transfer function information 266 of each mobile phone. The image transferred from is displayed at the specified position or area.

Further, the system-wide control function of the mobile phone in which the system main flag 261 is ON transmits the screen transfer information 233 between external display devices in the system function management data 27 to the external display device 110. If the external display device ID of the external display device 110 includes the information in which the external display device ID of the own device is specified as the transfer source external display device ID 2332 in the received screen transfer information 233 between the external display devices, the external display device 110 displays the external display. The screen is transmitted using the communication function to the external display device specified by the transfer destination external display device ID 2331 in the inter-device screen transfer information. In this example, it is assumed that the external display device 117 is designated as the transfer destination external display device ID, and the external display device 117 displays the received screen.

FIG. 9 is a diagram showing an example of transferring screens created by a plurality of mobile phones 106, 107, and 109 to a plurality of external display devices 114 and 115 in the same manner as the above example. The mobile phones 106, 107, and 109 are assigned to the external display devices 114 to 115 by referring to the screen transfer information 234 between the mobile phone and the external display device in the system function management data 27 by the system-wide control function of each mobile phone. It is determined. In the example of this figure, it is assumed that the mobile phone 106 and the mobile phone 107 are assigned to the external display device 114, and the mobile phone 109 is assigned to the external display device 115, respectively.

FIG. 10 is a diagram for explaining the sharing of processing, particularly the delegation of management functions, when making a call with a mobile phone. The locator function of the mobile phone 103 in which the system main flag 261 is ON in the initial state is in an operating state, and the phone management information 268 of the mobile phone can also be programmed. Here, when the user of the mobile phone uses the mobile phone for a call, the telephone management information 268 is in a call. At this time, since the call function is prioritized in the mobile phone, the program cannot be operated, the navigation program also does not operate, and the guidance information is not output. Therefore, the overall system control function 103 of the mobile phone has a locator function, selects another mobile phone 105 that can use the function, turns on the system main flag 261, and transmits the system function management data 27. Then, the system function management is transferred to the mobile phone 105. Thereafter, the overall control function of the mobile phone 105 to which system function management has been delegated turns on the locator function and takes over the processing of the mobile phone 103.

  The present invention is not limited to the car navigation of the embodiment but can be applied to a television, a radio, a multimedia player, and the like.

It is a block diagram of the system in the Example of this invention. It is a block diagram of the system in the motor vehicle in the Example of this invention. It is a block diagram of the function management data used for management in the whole control function in the Example of this invention. It is a block diagram of the system function management data used by the system whole control function in the Example of this invention. It is a figure explaining the guidance audio | voice reproduction switching operation in a system in the Example of this invention. It is a figure explaining the operation | movement at the time of the competition of the operation input in a system in the Example of this invention. It is an example of the external display screen creation / transfer function information in the embodiment of the present invention. In the Example of this invention, it is a figure explaining the screen transfer operation | movement from several mobiles with respect to an external display apparatus. In the Example of this invention, it is a figure explaining the screen transfer operation | movement from several mobiles with respect to several external display apparatuses. In the Example of this invention, it is the figure which showed the share change operation | movement of the process at the time of telephone call process generation | occurrence | production.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Motor vehicle, 3 ... GPS satellite, 6 ... Base station, 8 ... Network, 12 ... ECU, 20 ... Server, 21 ... Gateway, 100, 102 ... Mobile phone, 110, 111 ... External display apparatus.

Claims (6)

In a plurality of mobile phones having an audio playback function, a screen display function, an operation input function, a communication function, and a program execution function,
One of the mobile phones has a management function that regulates the program operation of other mobile phones, and the overall control function enables each function of a voice playback function, a screen display function, an operation input function, and a communication function. Or have the ability to disable,
The mobile phone having the overall control function has a system overall control function capable of controlling the overall control function of each mobile phone to enable or disable each function of each mobile phone. phone.   The system overall control function according to claim 1, wherein the system overall control function disables the means for detecting the processing load of the mobile phone having the management function and the voice reproduction function of the mobile phone having the management function when the processing load increases, A cellular phone characterized by enabling a voice reproduction function in any one of the phones.   The operation input function of each mobile phone has information indicating the priority of operation in the entire system, and the system overall control function detects contention detecting means for detecting that the operation input of each mobile phone has competed. And a mobile phone that disables an operation input function of a mobile phone having a low priority according to the priority of the operation when the conflict detection means detects the conflict.   2. The mobile phone according to claim 1, wherein the overall control function of each mobile phone has a state detection means for detecting the state of the mobile phone and has a system overall control function according to the impossibility of processing of the mobile phone having a management function. Disables the function to perform processing in the system of the mobile phone, transmits necessary information to perform the management function to another mobile phone that can perform the management function, and the function is possible A mobile phone characterized by enabling the function in another mobile phone.   2. The external display device according to claim 1, wherein the external display device receives image information shared by each mobile phone and displays each image at an image display position designated for each mobile phone. 6. The system overall control function of a mobile phone having a management function according to claim 5, wherein when there are a plurality of external display devices, the ID of the mobile phone serving as the image transmission source and the ID of the external display device serving as the transmission destination are designated. And an external display device that transfers image information to a destination external display device based on designation from the mobile phone.

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