JP2005260543A - Portable unit specifying lost place and lost time - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable unit specifying a lost place and lost time. <P>SOLUTION: The portable unit is composed of a portable information terminal 1 and a portable device 2. The portable information terminal 1 has a portable telephone function, a communication function with the Internet, a function receiving information from a GPS satellite 4, a communication function with the portable device 2, a security function for protecting privacy and a storage function which always stores new place information/time information. The portable device 2 has a clock function, a security function for protecting privacy of the portable information terminal 1, a communication function with the portable information terminal 1, and a storage function which always stores new place information/time information. When the portable information terminal 1 or the portable device 2 is left behind or lost, left or lost place/time can be specified by using the portable information terminal 1 or the portable device 2 which remains at hand. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a portable device that specifies a lost place and a lost time by mutually transmitting and receiving between portable information terminals, or specifying a lost place and a lost time by mutually transmitting and receiving between a portable information terminal and a portable device.

  In recent years, the number of users of portable information terminals having communication functions such as mobile phones, PDAs (Personal Digital Assistants), game machines, and PHSs has increased rapidly. At the same time, a portable information terminal capable of handling a large amount of information with a multi-function including a digital camera, etc., and further equipped with a mobile phone, a television, and a digital camera function having a video speed similar to that of a TV, IC tag, wireless LAN, PHS, Broadband portable information terminals that can be used as storage terminals for electronic money and commuter passes that support communication methods such as infrared communication have appeared. Then, portable devices such as wristwatches having a security function that can communicate with these portable information terminals by wireless communication and improve the confidentiality of the portable information terminals have also appeared.

  The portable information terminal is excellent in convenience that it can communicate with anyone anytime and anywhere. On the other hand, when lost or stolen, there is a high risk of loss of confidential information or misuse by others. For this reason, the authentication data transmitted by the user's authentication card to the portable information terminal is added with restriction conditions such as the time and place where the portable information terminal can be used, and finely-authenticated according to the situation. Security for preventing the convenience and unauthorized use of information terminals is improved (for example, see Patent Document 1). In addition, when the user goes out without carrying the portable information terminal by mistake, the user is notified by an alarm, and when the first portable information terminal (master unit) is accidentally lost, the second portable information is obtained. The location where the first portable information terminal (master device) is lost can be specified using the terminal (slave device) (see, for example, Patent Document 2).

  In the above-mentioned portable information terminal and portable device, there is a problem that when the portable information terminal and the portable device are lost or misplaced, the lost place and the lost time of the portable information terminal and the portable device cannot be specified, and the misplaced place and the misplaced time cannot be specified. is there.

Furthermore, in the first portable information terminal (master unit) and the second portable information terminal (slave unit), if the first portable information terminal (master unit) and the second portable information terminal (secondary unit) are lost or misplaced, There is a problem in that it is impossible to specify the location and lost time of the portable information terminal (slave device) or to specify the location and time of misplacement.
JP 2001-358827 A (Page 7, FIG. 1) JP 2002-223478 A (Page 7, FIGS. 1 and 4)

  The present invention alternately transmits / receives between the portable information terminal and the portable device and always shares new location information and date / time information, or alternately transmits / receives between the portable information terminal and always shares the new location information and date / time information and is lost. The object is to provide a portable device that identifies the location and lost time.

  In order to achieve the above object, a portable device for identifying a lost place and lost time according to one aspect of the present invention is a public wireless communication means for performing wireless communication with a public network using radio waves, and position detection by a global positioning system. GPS position information calculating means, date and time information generating means, first information transmitting and receiving means for communicating information by short-range wireless, constantly acquiring new position information and date and time information from the GPS position information calculating means and date and time information generating means A portable information terminal having a first storage means for storing, a second information transmitting / receiving means for communicating information with the portable information terminal by the short-range wireless communication, and a position of the portable information terminal that is always new from the portable information terminal. A portable device having a second storage means for storing information and date / time information, wherein the portable information terminal and the portable device are out of a communication range by the short-range wireless communication When it becomes, characterized by saving the location and date and time information of the portable information terminal immediately before the outside communication range of the mobile information terminal in the first and second storage means.

  Further, the portable device for identifying the lost place and lost time according to another aspect of the present invention is a public wireless communication means for performing wireless communication with a public line network using radio waves, GPS position information calculation for performing position detection by a global positioning system. Means, date / time information generating means, first information transmitting / receiving means for exchanging information by short-range wireless communication, first storage means for always storing new position information / date / time information from the GPS position information calculating means and date / time information generating means Public wireless communication means for performing wireless communication between a first portable information terminal having a radio wave and a public line network, second information transmission / reception means for communicating information with the first portable information terminal by the short-range wireless communication, A second portable information terminal having second storage means for storing the position information and date / time information of the first portable information terminal that is always new from the portable information terminal; When the portable information terminal of the first portable information terminal and the second portable information terminal are out of the communication range of the short-range wireless communication, the first portable information terminal The position and date / time information is stored in the first and second storage means.

  According to the present invention, the portable information terminal and the portable device transmit and receive alternately, and always share new location information and date / time information, or alternately transmit and receive between the portable information terminal and always share new location information and date and time information. It is possible to provide a portable device that identifies a lost place and a lost time.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, a portable device for specifying a lost place and lost time according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram showing a portable information terminal and a portable device, and FIG. 2 is a schematic block diagram showing the portable information terminal and the portable device.

  As shown in FIG. 1, the mobile device includes a mobile information terminal 1 and a mobile device 2. The mobile information terminal 1 has a mobile phone function, a communication function with the Internet, a function to receive information from the GPS satellite 4, a communication function with the mobile device 2, a security function to maintain confidentiality, and always new location information / It has a storage function for storing date and time information. The portable device 2 has a clock function, a security function for maintaining the confidentiality of the portable information terminal 1, a communication function with the portable information terminal 1, and a storage function that always stores new location information and date / time information.

  The base station 3 distributes mobile phone information, Internet information, etc. to the mobile information terminal 1 and receives information from the mobile information terminal 1. Then, information from the GPS satellite 4 is received. The GPS satellite 4 transmits a signal for calculating accurate position information to the base station 3 and the portable information terminal 1 and the like, and also incorporates an atomic clock, and sends an accurate time to the base station 3 and the portable information terminal 1. Send.

  Here, as a method of measuring the accurate position of the portable information terminal 1, first, the portable information terminal 1 requests the base station 3 or the position information server to perform position measurement. Next, the current position of the portable information terminal 1 is calculated from the orbit data of the GPS satellite 4 stored in the position information server and the position of the base station 3. Subsequently, the position calculation result is notified to the portable information terminal 1. Then, the current location is calculated based on the information from the position information server and the signal from the GPS satellite 4. As a positioning method, a method of receiving a signal from the GPS satellite 4 and calculating a position based on this signal in the portable information terminal 1 or a position where the portable information terminal 1 receives the signal received from the GPS satellite 4 Information is transmitted to the position information server, orbit data of the GPS satellite 4 is accumulated in the position information server, the current position is calculated together with the data from the portable information terminal 1, and this data is received and used by the portable information terminal 1 It is also possible to do it.

  As shown in FIG. 2, the portable information terminal 1 includes a main control unit 11, an input key unit 12, a display unit 13, a speaker 14, a power supply unit 15, a GPS reception unit 16, a transmission / reception unit 17, a reception unit 18, and a transmission unit 19. , Switch 20, storage unit 21, and antennas 30, 31, and 32.

  The main control unit 11 has various processing programs and functions as a microcontroller that instructs and controls each component in the portable information terminal 1. The input key unit 12 is an aggregate of input key switches that can be used for input of emergency calls and the like for input operations exposed to the outside. The display unit 13 includes a liquid crystal display that displays operation contents and various states by the input key unit 12. The speaker 14 outputs a confirmation sound and audio information when the input key unit 12 is operated. The power supply unit 15 includes a battery that supplies power to the main control unit 11 and each component in the portable information terminal 1, and a charging circuit that charges the battery. The GPS receiver 16 demodulates a received signal of, for example, 1.5 GHz from the GPS satellite 4 received by the antenna 30 and transmits it to the main controller 11 as received data. The transmission / reception unit 17 demodulates a signal received by the antenna 31 and transmitted from the base station 3 and transmits it to the main control unit 11 as reception data, or modulates transmission data output from the main control unit 11 and transmits it from the antenna 31. Output to the outside. The receiving unit 18 receives a signal transmitted from the portable device 2 via the antenna 33 via the antenna 32 and the switch 20, demodulates the received signal, and transmits the demodulated signal to the main control circuit 11. The transmission unit 19 modulates transmission data output from the main control unit 11 and transmits it to the portable device 2 via the switch 20 and the antenna 32. The memory | storage part 21 stores authentication data, and stores the positional information on the measured portable information terminal 1 and date / time information transmitted from the GPS.

  Then, the position information and the date / time information are transmitted to the portable device 2 via the antennas 32 and 33 by radio. Here, the position information and date / time information are periodically updated, and the latest information is always stored in the storage unit 21. The communication method between the portable information terminal 1 and the portable device 2 uses a 300 MHz band short-range radio. As a communication method, a non-contact infrared method or 2.4 GHz Bluetooth (R) may be used.

  On the other hand, the mobile device 2 includes an antenna 33, a main control unit 41, a power supply unit 42, a reception unit 43, a transmission unit 44, a switch 45, a storage unit 46, and a display unit 47. Note that description of the clock function of the mobile device 2 is omitted.

  The main control unit 41 has various processing programs, and instructs and controls each component in the mobile device 2. The power supply unit 42 includes a battery that supplies power to the main control unit 41 and each component in the portable device 2, and a charging circuit that charges the battery. The receiving unit 43 receives a signal transmitted from the portable information terminal 1 via the antenna 33 and the switch 45, demodulates the received signal, and transmits the demodulated signal to the main control circuit 41. The transmission unit 44 modulates the transmission data output from the main control circuit 41 and transmits it to the portable information terminal 1 via the switch 45 and the antenna 33. The display unit 47 includes a liquid crystal display that displays date and time information, information from the portable information terminal 1, and the like. The storage unit 46 stores authentication data and stores location information and date / time information transmitted from the portable information terminal 1.

  Here, the position information and date / time information are periodically updated, and the latest information is always stored in the storage unit 46. As a security method for the portable information terminal 1 and the portable device 2, the portable information terminal 1 and the portable device 2 regularly communicate with each other using the short-range wireless communication without performing an owner confirmation operation. When the distance between the portable information terminal 1 and the portable device 2 is outside the short-range wireless reception range, authentication data cannot be exchanged, and the portable information terminal 1 is automatically locked and cannot be used.

  Next, a method for specifying the lost place and lost time of the portable information terminal and the portable device will be described. FIG. 3 is an explanatory view showing operations of the portable information terminal and the portable device, FIG. 3A is a diagram showing that the portable information terminal and the portable device are within the communication range, and FIG. 3B is a portable information terminal. It is a figure which shows that a portable apparatus is outside a communication range. Here, the user 10 who has subscribed to the use contract of the portable information terminal service always carries the portable information terminal 1 and the portable device 2.

  As shown in FIG. 3, when the portable information terminal 1 and the portable device 2 are within the short-range wireless communication range, the position information and date / time information of the portable information terminal 1 are regularly updated so that the latest information is always updated. Stored in the storage units 21 and 46. If the user 10 misplaces or loses either the portable information terminal 1 or the portable device 2 and the portable information terminal 1 and the portable device 2 are out of the short-range wireless communication range, the communication range becomes impossible. The location information and date / time information of the portable information terminal 1 immediately before going out are stored in the storage units 21 and 46.

  Here, as a method for obtaining accurate date and time information, the clock function of the portable device 2 may be used instead of the GPS satellite 4. In that case, a radio wristwatch is preferred.

As described above, in the portable device that specifies the lost place and lost time of this embodiment,
The portable information terminal 1 and the portable device 2 regularly communicate using short-range wireless, and share and update the latest location information and date / time information of the portable information terminal 1. Then, if one of the portable information terminal 1 and the portable device 2 is misplaced or lost, the place / time where the portable information terminal 1 or the portable device 2 left at hand is left misplaced or lost is specified. This information can be displayed on the display unit.

  Furthermore, the portable information terminal 1 and the portable device 2 periodically communicate authentication data using short-range wireless communication, and when the portable information terminal 1 and the portable device 2 are separated by a predetermined distance or more, the portable information terminal 1 Is automatically locked and can no longer be used, so that leakage of confidential information of the portable information terminal 1 and misuse of the portable information terminal 1 by others can be prevented.

  In the present embodiment, the mobile information terminal 1 is provided with a mobile phone function, a communication function with the Internet, a digital camera function, a function of receiving information from the GPS satellite 4, a communication function with the mobile device 2, and the confidentiality. Although a security function and a storage function for always storing new location information and date / time information are provided, a digital camera function, a PC function, or a TV display function may be added. Further, a portable music playback function or a game function may be added to the portable device 2 instead of the clock function. In this case, it is preferable to add a display function for displaying position information and date / time information.

  Next, a portable device for identifying a lost place and lost time according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is an explanatory diagram showing the portable information terminal, and FIG. 5 is a schematic block diagram showing the portable information terminal.

  Hereinafter, in the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different components are described.

  As shown in FIG. 4, the portable device includes a first portable information terminal (parent device) 5 and a second portable information terminal (child device) 6. The first portable information terminal (master unit) 5 has a cellular phone function, a communication function with the Internet, a function to receive information from the GPS satellite 4, a communication function with the second portable information terminal (slave unit) 6, It has an RTC (real time clock) function for displaying and storing the date and time like a timer, and a storage function for always storing new location information and date / time information. Other than the RTC function, the portable information terminal 1 of the first embodiment It is the same composition as.

  The second portable information terminal (slave unit) 6 displays a date and time like a cellular phone function, a communication function with the Internet, a communication function with the first portable information terminal (parent unit) 5, a timer, It has an RTC (real time clock) function for storing, and a storage function for always storing new location information and date / time information. The base station 3 distributes cellular phone information, Internet information, etc. to the first portable information terminal (master unit) 5 and the second portable information terminal (slave unit) 6, and the first portable information terminal (master unit). 5 and information from the second portable information terminal (child device) 6 are received.

  As shown in FIG. 5, the first portable information terminal (master device) 5 includes a main control unit 11, an input key unit 12, a display unit 13, a speaker 14, a power supply unit 15, a GPS reception unit 16, a transmission / reception unit 17, The receiving unit 18, the transmitting unit 19, the switch 20, the storage unit 21, the RTC unit 70, and the antennas 30, 31, and 32 are provided. The RTC unit 70 controls the date and time like a timer in response to a command from the main control unit 11 and transmits this information to the main control unit 11. Therefore, the date and time can be displayed and stored even when there is no external radio wave such as the GPS satellite 4 incorporating the atomic clock. Since the time information from the GPS satellite 4 incorporating the atomic clock is more accurate than the time information from the RTC unit 70, it is preferable to reset the time information of the RTC unit 70 at any time by a command from the main control unit 11.

  The second portable information terminal (slave device) 6 includes a main control unit 51, an input key unit 52, a display unit 53, a speaker 54, a power supply unit 55, a transmission / reception unit 56, a reception unit 57, a transmission unit 58, a switch 59, and a storage. Part 60, RTC part 71, and antennas 34 and 35.

  The main control unit 51 has various processing programs and functions as a microcontroller that instructs and controls each component in the second portable information terminal (child device) 6. The input key unit 52 is an aggregate of input key switches that can be used for input of emergency calls and the like for input operations exposed to the outside. The display unit 53 is composed of a liquid crystal display that displays operation contents and various states by the input key unit 52. The speaker 54 outputs a confirmation sound and voice information when the input key unit 52 is operated. The power supply unit 55 includes a battery that supplies power to each component in the main control unit 51 and the second portable information terminal (child device) 6 and a charging circuit that charges the battery. The transmission / reception unit 57 demodulates the signal received by the antenna 34 and transmitted from the base station 3 and transmits it to the main control unit 51 as reception data, or modulates the transmission data output from the main control unit 51 and transmits it from the antenna 34. Output to the outside. The receiving unit 57 receives a signal transmitted from the first portable information terminal (master unit) 5 via the antenna 32 via the antenna 35 and the switch 59, demodulates the received signal, and sends it to the main control circuit 51. Send. The transmission unit 58 modulates the transmission data output from the main control unit 51 and transmits it to the first portable information terminal (master device) 5 via the switch 59 and the antenna 35. The RTC unit 71 controls the date and time like a timer in response to a command from the main control unit 51, and transmits this information to the main control unit 51. The storage unit 60 stores the position information and date / time information of the first portable information terminal (parent device) 5 transmitted from the first portable information terminal (parent device) 5.

  Here, the location information and date / time information of the first portable information terminal (master unit) 5 are regularly updated, and the latest information is always stored in the storage unit 21 of the first portable information terminal (master unit) 5 and the first information. 2 is stored in the storage unit 60 of the portable information terminal (child device).

  As described above, in the portable device that identifies the lost place and the lost time according to the present embodiment, the first portable information terminal (master device) 5 and the second portable information terminal (slave device) 6 use short-range radio. The latest location information and date / time information of the first portable information terminal (master device) 5 are shared and updated. If one of the first portable information terminal (master device) 5 and the second portable information terminal (slave device) 6 is left behind or lost, the first portable information terminal (remaining at hand) It is possible to specify a place / time that has been misplaced or lost by using the master unit 5 or the second portable information terminal 6 (slave unit), and this information can be displayed on the display unit.

  Further, the first portable information terminal (master unit) 5 and the second portable information terminal (slave unit) 6 are provided with an RTC function for displaying and storing the date and time. Even if there is no time information, the time can be specified.

  Next, a portable device for identifying a lost place and lost time according to a third embodiment of the present invention will be described with reference to the drawings. FIG. 6 is an explanatory diagram showing a PHS (personal handyphone system) terminal.

  Hereinafter, in the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different components are described.

  As shown in FIG. 1, the mobile device includes a PHS terminal 1 a and a mobile device 2. The PHS terminal 1a has a mobile phone function, a communication function with the Internet, a communication function with the mobile device 2, a security function for maintaining confidentiality, an RTC function for displaying and storing date and time like a timer, and always It has a storage function for storing new location information and date / time information. The mobile phone function and the communication function with the Internet are based on information transmitted / received to / from the PHS base station 3a.

  The portable device 2 has a clock function, a security function for maintaining the confidentiality of the PHS terminal 1a, a communication function with the PHS terminal 1a, and a storage function for always storing new location information and date / time information.

  Here, the position information and date / time information are periodically updated, and the latest information is always stored in the storage units of the PHS terminal 1 a and the mobile device 2. As a security method for the PHS terminal 1a and the mobile device 2, the PHS terminal 1a and the mobile device 2 regularly communicate with each other using the short-range wireless communication without performing an owner confirmation operation. If the distance between the PHS terminal 1a and the portable device 2 is outside the short-range wireless reception range, the authentication data cannot be exchanged, and the PHS terminal 1a is automatically locked and cannot be used.

  When the PHS terminal 1a and the portable device 2 are within the short-range wireless communication range, the position information and date / time information of the PHS terminal 1a are periodically updated, and the latest information is always stored in the respective storage units. If the user 10 misplaces or loses either the PHS terminal 1a or the portable device 2, and the PHS terminal 1a and the portable device 2 are out of the communication range of the short-range wireless communication, they cannot communicate with each other and are out of the communication range. The position information and date / time information of the immediately preceding PHS terminal 1a are stored in the respective storage units. Here, the position information of the PHS terminal 1a is the vicinity of the position where the PHS base station 3a is transmitted and received by the PHS terminal 1a, and indicates within the reception range of the PHS terminal 1a, for example, within several tens of meters.

  As described above, in the portable device that identifies the lost place and the lost time according to the present embodiment, the PHS terminal 1a and the portable device 2 regularly communicate using short-range radio, and the latest position information of the PHS terminal 1a and Date information is shared and updated. And if you have left or lost either the PHS terminal 1a or the mobile device 2, you can specify the location / time that you left or lost using the PHS terminal 1a or the mobile device 2 left at hand, This information can be displayed on the display unit.

  Further, the PHS terminal 1a and the portable device 2 periodically communicate authentication data using short-range wireless communication. When the PHS terminal 1a and the portable device 2 are separated by a predetermined distance or more, the PHS terminal 1a automatically Because it becomes locked and cannot be used. It is possible to prevent leakage of confidential information from the PHS terminal 1a and misuse of the PHS terminal 1a by others.

  The present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the invention.

  For example, in the second embodiment, the case where the first portable information terminal (master device) 5 and the second portable information terminal (slave device) 6 are used one by one is described. However, the second portable information terminal (child device) A plurality of second portable information terminals (slave units) 6 and the first portable information terminal may be communicated with each other by holding a single machine 6) to each of a plurality of users. Then, a digital camera function, a PC function, or a TV function may be added to the first portable information terminal (parent device) 5. A game machine having a communication function may be used instead of the second portable information terminal (child device) 6. In the third embodiment, the PHS base station transmits / receives data to / from the portable information terminal, but a method of transmitting / receiving data to / from a wireless LAN base station of 2.5 GHz or 5 GHz band may be used. Further, in the first and second embodiments, the GPS position information is used, and in the third embodiment, the position information of the PHS base station is used. However, the position information of the mobile phone base station and the position information of the wireless LAN base station may be used. .

The present invention can be configured as described in the following supplementary notes.
(Supplementary note 1) Public wireless communication means for performing wireless communication with a public line network using radio waves, GPS position information calculating means for performing position detection by a global positioning system, date / time information generating means, and information communication using short-range wireless communication 1st portable information which has the 1st memory | storage means which always memorize | stores new positional information and date information from the 1 information transmission / reception means, the said GPS position information calculating means, and the said date information generation means, and the authentication means for maintaining confidentiality Public wireless communication means for performing wireless communication between a terminal and a public line network using radio waves, second information transmission / reception means for communicating information with the first portable information terminal by the short-range wireless communication, and always new from the portable information terminal Second storage means for storing position information / date and time information of the first portable information terminal, and a second portable information terminal having mutual authentication means with the first portable information terminal And when the first portable information terminal and the second portable information terminal are out of the communication range by the short-range wireless, the first portable information terminal immediately before the first portable information terminal is out of the communication range of the first portable information terminal. The location and date / time information of the portable information terminal are stored in the first and second storage means, and mutual authentication between the first portable information terminal and the second portable information terminal becomes impossible to exchange. A portable device that identifies a lost place and a lost time when the portable information terminal is automatically locked and cannot be used.

(Supplementary note 2) Public wireless communication means for performing wireless communication with a public line network by radio waves, GPS position information calculation means for performing position detection by a global positioning system, Date and time information receiving means for receiving date and time information by radio waves from the outside, First information transmitting / receiving means for communicating information by short-range wireless communication, first storage means for always storing new position information / date / time information from the GPS position information calculating means and date / time information receiving means, for maintaining confidentiality A first portable information terminal having authentication means; a public wireless communication means for performing wireless communication with a public line network using radio waves; and a second information transmission / reception for exchanging information with the first portable information terminal by the short-range wireless communication. Means, second storage means for always storing position information / date and time information of the first portable information terminal that is always new from the portable information terminal, and mutual communication with the first portable information terminal. A second portable information terminal having a verification means, and the first portable information terminal when the first portable information terminal and the second portable information terminal are out of a communication range by the short-range wireless communication. The first portable information terminal and the second portable information terminal are stored in the first and second storage means, the position and date / time information of the first portable information terminal immediately before going out of the terminal communication range. A portable device that identifies a lost place and a lost time in which mutual authentication cannot be exchanged and the first portable information terminal is automatically locked and cannot be used.

(Supplementary note 3) Public wireless communication means for performing wireless communication with a public line network using radio waves, position information calculating means for detecting position based on presence / absence of communication with a base station, date / time information generating means, first communication information by short-range wireless communication A portable information terminal having first storage means for constantly acquiring and storing new position information / date and time information from one information transmitting / receiving means, the position information calculating means and the date and time information generating means; A second information transmitting / receiving means for communicating information with the information terminal; and a portable device having a second storage means for storing position information / date / time information of the portable information terminal that is always new from the portable information terminal, and the portable information Location and date / time information of the mobile information terminal immediately before the mobile information terminal is out of the communication range when the terminal and the mobile device are out of the communication range of the short-range wireless communication Mobile device for identifying the missing location and lost time, characterized in that stored in the first and second storage means.

(Supplementary Note 4) Public wireless communication means for performing wireless communication with a public network using radio waves, GPS position information calculation means for performing position detection by a global positioning system, and first information transmission / reception means for communicating information by short-range wireless communication A portable information terminal having first storage means for constantly obtaining and storing new position information from the GPS position information calculation means, and second information transmitting / receiving means for communicating information with the portable information terminal by the short-range wireless communication A date and time information generating means, a second storage means for always storing the position information of the portable information terminal and the date and time information generating means that are always new from the portable information terminal, and sending the date and time information generating means to the information terminal to send the information A portable device having a transmission means to be stored in the terminal, when the portable information terminal and the portable device are out of the communication range by the short-range wireless, Serial portable mobile information device that identifies the missing location and lost time, characterized in that to store the position and date and time information of the portable information terminal immediately before the outside contact range to the first and second storage means of the terminal.

Explanatory drawing which shows the portable information terminal and portable apparatus which concern on Example 1 of this invention. 1 is a schematic block diagram showing a portable information terminal and a portable device according to Embodiment 1 of the present invention. Explanatory drawing which shows operation | movement of the portable information terminal and portable apparatus which concern on Example 1 of this invention. Explanatory drawing which shows the portable information terminal which concerns on Example 2 of this invention. The schematic block diagram which shows the portable information terminal which concerns on Example 2 of this invention. Explanatory drawing which shows the PHS terminal which concerns on Example 3 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Portable information terminal 1a PHS terminal 2 Portable apparatus 3 Base station 3a PHS base station 4 GPS satellite 5 1st portable information terminal (master)
6 Second portable information terminal (child device)
11, 41, 51 Main control unit 12, 52 Input key unit 13, 47, 53 Display unit 14, 54 Speaker 15, 42, 55 Power supply unit 16 GPS reception unit 17, 56 Transmission / reception unit 18, 43, 57 Reception unit 19, 44, 58 Transmitter 20, 45, 59 Switch 21, 46, 60 Storage 30, 31, 32, 33, 34, 35 Antenna 70, 71 RTC

Claims (5)

Public wireless communication means for performing wireless communication with a public line network using radio waves, GPS position information calculating means for performing position detection by a global positioning system, date / time information generating means, and first information transmission / reception for communicating information by short-range wireless communication A portable information terminal having first storage means for constantly obtaining and storing new position information / date and time information from the GPS position information calculating means and the date and time information generating means;
A portable information device having second information transmission / reception means for communicating information with the portable information terminal by the short-range wireless communication, and second storage means for constantly storing position information and date / time information of the portable information terminal from the portable information terminal. When,
And when the portable information terminal and the portable device are out of the communication range by the short-range wireless communication, the position and date / time information of the portable information terminal immediately before the portable information terminal is out of the communication range of the portable information terminal A portable device for identifying a lost place and lost time, wherein the lost place and the lost time are stored in the first and second storage means. By public wireless communication means for wireless communication with a public line network by radio waves, GPS position information calculation means for position detection by a global positioning system, date and time information reception means for receiving date and time information from the outside, near field wireless A portable information terminal having first storage means for always obtaining and storing new position information / date and time information from the first information transmitting / receiving means for communicating information, the GPS position information calculating means and the date and time information receiving means;
A portable information device having second information transmission / reception means for communicating information with the portable information terminal by the short-range wireless communication, and second storage means for constantly storing position information and date / time information of the portable information terminal from the portable information terminal. When,
And when the portable information terminal and the portable device are out of the communication range by the short-range wireless communication, the position and date / time information of the portable information terminal immediately before the portable information terminal is out of the communication range of the portable information terminal A portable device for identifying a lost place and lost time, wherein the lost place and the lost time are stored in the first and second storage means.   The portable information terminal and the portable device have mutual authentication means for maintaining confidentiality, perform mutual communication of authentication data using the short-range wireless, and the portable information terminal and the portable device are out of the communication range. 3. The portable device for identifying a lost place and lost time according to claim 1, wherein authentication data cannot be exchanged and the portable information terminal is automatically locked and cannot be used.   The said portable apparatus has the function to calculate and display date information, or the function to reproduce | regenerate music information, The loss place and loss time of any one of Claim 1 thru | or 3 characterized by the above-mentioned Portable device. Public wireless communication means for performing wireless communication with a public network using radio waves, GPS position information calculating means for performing position detection by a global positioning system, date / time information generating means, and first information transmission / reception for communicating information by short-range wireless communication A first portable information terminal having first storage means for always storing new position information / date and time information from the means, the GPS position information calculating means and the date and time information generating means;
Public wireless communication means for performing wireless communication with a public line network using radio waves, second information transmitting / receiving means for communicating information with the first portable information terminal by the short-range wireless communication, and the first information that is always new from the portable information terminal. A second portable information terminal having second storage means for storing position information and date / time information of the portable information terminal;
And when the first portable information terminal and the second portable information terminal are out of the communication range by the short-range wireless communication, the just before the first portable information terminal is out of the communication range of the first portable information terminal A portable device for identifying a lost place and a lost time, wherein the location and date / time information of the first portable information terminal are stored in first and second storage means.

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