JP2015065523A - Information terminal and program for information terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promptly diffuse information from a transmission source terminal.SOLUTION: An information terminal (31) comprises: direction setting means (C101) for setting a transmission direction (21) for transmitting information from the information terminal (31); direction calculation means (C106) for calculating based on the current position of another terminal (33), a direction from the information terminal (31) toward another terminal (32); terminal selection means (C107) for selecting based on the transmission direction (21) and the direction toward another terminal (33), the other terminal (33) to which information is transmitted from among the other terminals (33) capable of radio communication; and information transmission means (C108) for transmitting the information to the other terminal (33) selected by the terminal selection means (C107).

Description

  The present invention relates to an information terminal capable of transmitting information and a program for the information terminal, and more particularly to an information terminal for transmitting information by wireless communication and a program for the information terminal.

  In a conventional wireless communication system such as a mobile phone line, information is transmitted and received between two mobile phones (terminals) via a base station. Direct WiFi (registered trademark), Bluetooth (registered trademark), ZigBee (registered trademark), Near Field Communication ( A technique for performing direct communication between terminals called an ad hoc network using a communication method such as NFC is known. However, in direct communication between terminals, communication is possible only within the reach of the radio waves of the terminals, and the distance over which information can be transmitted is short. Therefore, a method of transmitting information by repeatedly transmitting information received from one terminal to another terminal, that is, a so-called multi-hop technique for transmitting information in a bucket relay manner is also known. As such a technique, a technique described in Patent Document 1 below is known.

  Patent Document 1 (Japanese Patent Laid-Open No. 2013-161316) describes a configuration in which information is directly transmitted to terminals having overlapping coverage areas when communicating between a plurality of information communication terminals.

JP2013-161316A ("0021" to "0025")

(Problems of conventional technology)
In the configuration described in Patent Document 1, information is transmitted / received to / from a terminal that has entered a communicable area. Therefore, for example, when information is to be transmitted from its own terminal (terminal A) to the terminal terminal (terminal B) for which information is to be transmitted, the terminal (terminal C) that has entered the communicable area of terminal A ), The information may be returned from the terminal D to the terminal A after the terminal C transmits it to another terminal (terminal D). That is, there is a problem that a situation occurs in which the information is not spread from the terminal A as a transmission source and is circulated around the terminal A or a terminal on the way.

  It is a technical object of the present invention to quickly spread information from a transmission source terminal.

In order to solve the technical problem, the information terminal of the invention according to claim 1,
An information terminal capable of wireless communication with other terminals,
Direction setting means for setting a transmission direction for transmitting information from the information terminal;
Terminal search means for searching for another terminal capable of wireless communication with the information terminal;
Direction calculating means for calculating a direction from the information terminal toward the other terminal based on a current position of the other terminal;
Based on the transmission direction set by the direction setting means and the direction toward the other terminal calculated by the direction calculation means, information is transmitted from the other terminals capable of wireless communication. A terminal selection means for selecting another terminal;
Information transmitting means for transmitting information to another terminal selected by the terminal selecting means;
It is provided with.

The invention according to claim 2 is the information terminal according to claim 1,
The mobile information terminal and the other terminal that can be carried by a user,
It is provided with.

The invention according to claim 3 is the information terminal according to claim 1 or 2,
The direction setting means for setting the transmission direction based on a random number;
It is provided with.

In order to solve the technical problem, a program for an information terminal according to claim 4 is provided.
An information terminal that can communicate wirelessly with other terminals
Direction setting means for setting a transmission direction for transmitting information from the information terminal;
Terminal search means for searching for another terminal capable of wireless communication with the information terminal;
Direction calculating means for calculating a direction from the information terminal toward the other terminal based on a current position of the other terminal;
Based on the transmission direction set by the direction setting means and the direction toward the other terminal calculated by the direction calculation means, information is transmitted from the other terminals capable of wireless communication. A terminal selection means for selecting another terminal,
Information transmitting means for transmitting information to another terminal selected by the terminal selecting means;
To function as.

According to the first and fourth aspects of the present invention, information can be quickly diffused from the terminal of the transmission source as compared with the configuration in which the transmission direction is not set.
According to invention of Claim 2, compared with the case where a terminal is fixed, a user's movement which carries a terminal can be utilized, and the range which information reaches | attains can be widened.
According to the third aspect of the present invention, information can be expected to arrive even when the position of the destination terminal is unknown.

FIG. 1 is an explanatory diagram of an information communication system including an information terminal according to Embodiment 1 of the present invention. FIG. 2 is a block diagram (functional block diagram) illustrating each function provided in the control unit of the information terminal according to the first embodiment. FIG. 3 is an explanatory diagram of a direction in which information of the first embodiment is transmitted. FIG. 4 is a flowchart of the information transmission control process according to the first embodiment. FIG. 5 is a flowchart of the transmission process of the first embodiment, which is a subroutine of ST4 of FIG. FIG. 6 is a flowchart of received information control processing according to the first embodiment. FIG. 7 is an operation explanatory diagram of the first embodiment, FIG. 7A is an explanatory diagram of information transmission of the first embodiment, and FIG. 7B is an explanatory diagram of information transmission when a user carrying the terminal moves.

Next, examples which are specific examples of embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following examples.
In the following description using the drawings, illustrations other than members necessary for the description are omitted as appropriate for easy understanding.

FIG. 1 is an explanatory diagram of an information communication system including an information terminal according to Embodiment 1 of the present invention.
In FIG. 1, the information communication system 1 according to the first embodiment includes a plurality of smartphones 2 that are mobile terminals that can be carried and carried by a user as an example of an information terminal. Each smartphone 2 according to the first embodiment includes a substantially plate-shaped main body 2a. A touch panel 2b, which is an example of a display unit and an example of an input unit, is supported at the center of the surface of the main body 2a. A button 2c as an example of an input unit is disposed below the touch panel 2b, and a speaker 2d as an example of an audio output unit is disposed above the touch panel 2b.

(Description of the control part of the information terminal 2 of Example 1)
FIG. 2 is a block diagram (functional block diagram) illustrating each function provided in the control unit of the information terminal according to the first embodiment.
In FIG. 2, the control unit of the information terminal 2 includes an input / output interface (I / O) for inputting / outputting signals from / to the outside, a ROM (read) for storing a program and information for performing necessary processing, and the like. Small memory (only memory), RAM (random access memory) for temporarily storing necessary data, CPU (central processing unit) for processing according to the program stored in ROM, etc., and oscillator etc. The processing unit is constituted by a so-called microcomputer, and various functions can be realized by executing a program stored in the ROM.

(Signal input element connected to the control unit of the information terminal 2 of the first embodiment)
The control unit C of the information terminal 2 receives an output signal from a signal input element such as the button 2c, the touch panel 2b, or a GPS (Global Positioning System) module 6 as an example of a position information acquisition unit.
The GPS module 6 acquires information on the current position of the information terminal 2.

(Signal output element connected to the control unit of the information terminal 2 of the first embodiment)
The control unit C of the information terminal 2 outputs signals to signal output elements such as the mobile communication module 11 and the wireless LAN (Local Area Network) module 12.
The mobile communication module 11 can transmit and receive information through a mobile phone line.
The wireless LAN module 12 can transmit and receive information through a wireless LAN network. The wireless LAN module 12 according to the first embodiment is configured to be able to perform communication in an ad hoc network mode in addition to the infrastructure mode when performing wireless LAN communication.

(Function of the control unit of the information terminal 2 of the first embodiment)
The control unit C of the information terminal 2 has the following function for executing processing according to the input signal from the signal output element.
C1: Transmission Control Unit A transmission control unit C1 as an example of an information terminal program has units C101 to C119 described later, and controls transmission of information from the information terminal 2. The transmission control means C1 according to the first embodiment controls transmission of information when transmitting information in an ad hoc network mode that is direct communication between terminals through a wireless LAN. That is, when communication is performed using a mobile phone line or when communication is performed using a wireless LAN in the infrastructure mode, transmission is performed by a transmission control means for mobile communication or a transmission control means for infrastructure mode (not shown). Be controlled. Further, the transmission control unit C1 according to the first embodiment controls transmission when an input of mail transmission is made from the touch panel 2b.

FIG. 3 is an explanatory diagram of a direction in which information of the first embodiment is transmitted.
C101: Direction Setting Unit The direction setting unit C101 sets a direction in which information is transmitted. The direction setting unit C101 according to the first embodiment sets the direction 21 in which information is transmitted based on a random number. As an example, a numerical value obtained by dividing the generated random number by 360 can be set as an angle α formed with respect to true north when true north is 0 degree. Then, the direction setting unit C101 according to the first embodiment generates a normalized vector (x ₀ , y ₀ , 0) in the horizontal plane for the set angle.

C102: Transmission Information Creation Unit The transmission information creation unit C102 adds the data in the transmission direction 21 set by the direction setting unit C101 to the data (the body of the mail or the transmission destination) input by the user of the terminal 2. Create included transmission information.
C103: Terminal Search Unit The terminal search unit C103 searches for other information terminals 2 that are present around the information terminal 2 and capable of communication. The terminal search means C103 transmits information for terminal search and searches the information terminal 2 that has responded as another terminal 2 that can communicate.

C104: GPS Information Transmission Requesting Unit The GPS information transmission requesting unit C104 requests other information terminals 2 capable of communication to transmit GPS information as an example of information on the current position of each terminal 2.
C105: GPS Information Receiving Unit The GPS information receiving unit C105 receives GPS information transmitted from another terminal 2.
C106: Direction Calculation Unit The direction calculation unit C106 calculates a direction from the information terminal 2 that is the transmission source to the other terminal 2 based on the current position of the other terminal 2. The direction calculation means C106 of the first embodiment calculates a normalized direction vector (x ₁ , y ₁ , 0) in the horizontal plane from the GPS information of the information terminal 2 and the GPS information of the other terminals 2. When there are a plurality of other terminals 2 that can communicate, a direction vector is calculated for each terminal.

C107: Terminal selection means The terminal selection means C107 is capable of wireless communication based on the transmission direction 21 set by the direction setting means C101 and the direction toward the other terminal 2 calculated by the direction calculation means C106. The other terminal 2 that transmits information is selected from the terminals 2. The terminal selection unit C107 according to the first embodiment uses a range of ± θ1 that is a preset allowable range 22 around the vector (x ₀ , y ₀ , 0) in the transmission direction 21 (± ( When the vector (x ₁ , y ₁ , 0) to another terminal 2 is included in the range 22 ′) of θ1 + θ2), the terminal 2 is selected as the terminal 2 that transmits information. Specifically, the terminal selection unit C107 according to the first embodiment performs the inner product of the vector (x ₀ , y ₀ , 0) in the transmission direction 21 and the vector (x ₁ , y ₁ , 0) to the other terminals 2. Is calculated. Therefore, the closer the inner product value is to 1, the closer the vector (x ₁ , y ₁ , 0) to the other terminal 2 is to the vector (x ₀ , y ₀ , 0) in the transmission direction 21 and the closer to −1. You can see that it is facing in the opposite direction. If the inner product value β is equal to or larger than the value β1 corresponding to θ1, it is determined that the vector (x ₁ , y ₁ , 0) to the other terminal 2 is included in the range 22 of ± θ1. In addition, when there are a plurality of other terminals 2 that fall within the range of ± θ1, the terminal selection unit C107 according to the first embodiment selects the terminal 2 having the largest inner product value, that is, the closest transmission direction, as the transmission destination. .

C108: Information transmission means The information transmission means C108 transmits the information created by the transmission information creation means C102 to the terminal 2 selected by the terminal selection means C107.
C109: Transmission count counting means The transmission count counting means C109 counts the transmission count N1, which is the number of times information has been transmitted.
C110: Number of transmission trials storage means The number of transmission trials storage means C110 stores the number of transmission attempts Na, which is the number of times information is transmitted. The number of transmission attempts Na in the first embodiment is set in advance, and Na = 10 [times] is set as an example.

C111: Transmission completion determining means The transmission completion determining means C111 determines whether or not the transmission of information is completed. The transmission completion determination unit C111 according to the first embodiment determines that the transmission is completed when the number of transmissions N1 is equal to or greater than the number of transmission attempts Na.
C112: Transmission Impossible Count Count Unit The transmission disabled count count unit C112 counts the transmission disabled count N2, which is the number of times information cannot be transmitted. The transmission impossible count unit C112 according to the first embodiment calculates the transmission impossible number N2 when there is no other terminal 2 that can communicate or when there is no other terminal 2 included in the transmission range allowable range ± θ1. Add one.

C113: Impossibility Determination Number Storage Unit The impossibility determination number storage unit C113 stores the impossibility determination number Nb, which is the number of times it is determined that transmission has failed. The impossibility determination number Nb of the first embodiment is set in advance, and Nb = 10 [times] is set as an example.
C114: Communication failure determination means The communication failure determination means C114 determines whether or not transmission of information has failed. The communication failure determination unit C114 according to the first embodiment determines that the transmission has failed when the transmission impossibility count N2 is equal to or greater than the impossibility determination count Nb.

C115: Range Expansion Number Storage Unit The range expansion number storage unit C115 stores a range expansion number Nc as an example of a threshold value for determining whether or not the allowable range 22 in the transmission direction 21 is expanded. The range expansion count Nc of the first embodiment is set in advance, and as an example, Nc = 5 [times].
C116: Range Expansion Determination Unit The range expansion determination unit C116 determines whether to extend the allowable range 22 in the transmission direction 21. The range expansion determining unit C116 according to the first exemplary embodiment determines that it is time to expand the allowable range 22 when the transmission impossible count N2 is equal to or greater than the range expansion count Nc.

C117: Range Expansion Unit The range expansion unit C117 extends the allowable range 22 in the transmission direction 21. The range expansion means C117 of the first embodiment expands the allowable range from ± θ1 to ± (θ1 + θ2) based on a preset expansion range 22 ′.
C118: Retransmission Time Storage Means The retransmission time storage means C118 stores a retransmission time t1, which is a time interval for retrying transmission next when information cannot be transmitted. The retransmission time t1 is set in advance, and as an example, t1 = 10 [minutes] is set.

TM1: Timer The timer TM1 is set to the retransmission time t1 and is timed up when the retransmission time t1 elapses.
C119: Retransmission Time Determination Unit The retransmission time determination unit C119 determines whether it is time to retry transmission. The retransmission time determination means C119 of the first embodiment determines that it is time to retry transmission when the timer TM1 has timed up.

C2: Information Receiving Unit The information receiving unit C2 receives information transmitted from another terminal 2. The information receiving unit C2 according to the first embodiment receives transmission information transmitted from another terminal 2, a transmission request for GPS information, and the like.
C3: Reception Information Determination Unit The reception information determination unit C3 determines the information received by the information reception unit C2. The reception information determination unit C3 according to the first embodiment determines whether the received information is a GPS information transmission request, information received for the terminal 2, or information for another terminal 2. .

C4: GPS Information Acquisition Unit The GPS information acquisition unit C4 acquires the current position information (GPS information) of the terminal 2 from the GPS module 6 when a GPS information transmission request is received.
C5: GPS Information Transmitting Unit The GPS information transmitting unit C5 transmits the GPS information acquired by the GPS information acquiring unit C4 to the terminal 2 that has transmitted the transmission request.
C6: Communication Data Storage Unit The communication data storage unit C6 stores the received information addressed to the terminal 2.

C7: Transfer Means When receiving information destined for another terminal 2, the transfer means C7 further transfers information by transmitting the information to another terminal 2. The transfer unit C7 of the first embodiment has the same units as the units C103 to C108 and C112 to C119 of the transmission control unit C1, and performs the same processing except that the direction is not set. The detailed explanation is omitted.

(Description of Flowchart of Example 1)
Next, the flow of processing of each program of each control unit of the first embodiment will be described using a flowchart.

(Description of Information Transmission Control Processing of Example 1)
FIG. 4 is a flowchart of the information transmission control process according to the first embodiment.
Each ST (step) process in the flowchart of FIG. 4 is performed according to a program stored in the control unit C of the terminal 2. In addition, this process is executed by multitasking in parallel with other various processes of the control unit C.
The flowchart shown in FIG. 4 is started when the control unit C is activated.

In ST1 of FIG. 4, it is determined whether or not an input for transmitting data is made from the touch panel 2b. If yes (Y), the process proceeds to ST2. If no (N), ST1 is repeated.
In ST2, the transmission count N1 is initialized to zero. Then, the process proceeds to ST3.
In ST3, the following processes (1) and (2) are executed, and the process proceeds to ST4.
(1) A transmission direction vector (x ₀ , y ₀ , 0) is generated based on random numbers.
(2) Create transmission information including the transmission direction.
In ST4, a transmission process for transmitting information is executed, and the process proceeds to ST5. The transmission process will be described later with reference to FIG.
In ST5, 1 is added to the transmission count N1. That is, N1 = N1 + 1. Then, the process proceeds to ST6.
In ST6, it is determined whether or not the number of transmissions N1 is equal to or greater than the number of transmission attempts Na. If no (N), the process returns to ST3, and if yes (Y), the process returns to ST1.

FIG. 5 is a flowchart of the transmission process of the first embodiment, which is a subroutine of ST4 of FIG.
In ST11 of FIG. 5, the transmission disabled count N2 is initialized to zero. Then, the process proceeds to ST12.
In ST12, another terminal 2 that can communicate is searched. Then, the process proceeds to ST13.
In ST13, it is determined whether or not there is another terminal 2 capable of communication. If yes (Y), the process proceeds to ST14, and, if no (N), the process proceeds to ST23.
In ST14, transmission of GPS information is requested to another terminal 2 that can communicate. Then, the process proceeds to ST15.

In ST15, it is determined whether or not GPS information transmitted from another terminal 2 has been received. If yes (Y), the process proceeds to ST16, and if no (N), ST15 is repeated.
In ST16, a vector (x ₁ , y ₁ , 0) toward another terminal 2 is calculated based on the current position acquired from the GPS module 6 and the received GPS information. Then, the process proceeds to ST17.
In ST17, based on the vector (x ₀ , y ₀ , 0) in the transmission direction and the vector (x ₁ , y ₁ , 0) toward the other terminal 2, transmission within the allowable range in the transmission direction is possible. The other terminal 2 is detected. Then, the process proceeds to ST18.

In ST18, it is determined whether or not there is another terminal 2 that can transmit. If yes (Y), the process proceeds to ST19, and, if no (N), the process proceeds to ST23.
In ST19, it is determined whether or not there are a plurality of other terminals 2 that can transmit. If yes (Y), the process proceeds to ST20. If no (N), the process proceeds to ST21.
In ST20, the terminal 2 having the largest vector inner product is set as the destination terminal. Then, the process proceeds to ST22.
In ST21, a terminal 2 capable of transmission is set as a destination terminal. Then, the process proceeds to ST22.
In ST22, transmission information is transmitted to destination terminal 2. Then, the transmission process in FIG. 5 is terminated, and the process proceeds to ST5 in FIG.

In ST23, 1 is added to the transmission impossible count N2. That is, N2 = N2 + 1. Then, the process proceeds to ST24.
In ST24, it is determined whether or not the transmission impossibility number N2 is equal to or greater than the impossibility determination number Nb. If yes (Y), the process proceeds to ST25, and, if no (N), the process proceeds to ST26.
In ST25, an error notification indicating that transmission is not possible is displayed on the touch panel 2b. Then, the transmission process in FIG. 5 is terminated, and the process proceeds to ST5 in FIG.

In ST26, it is determined whether or not the transmission impossible count N2 is equal to or greater than the range expansion count Nc. If yes (Y), the process proceeds to ST27, and, if no (N), the process proceeds to ST28.
In ST27, the range of the transmission direction is expanded. Then, the process proceeds to ST28.
In ST28, retransmission time t1 is set in timer TM1. Then, the process proceeds to ST29.
In ST29, it is determined whether or not timer TM1 has timed up, that is, whether or not retransmission time t1 has elapsed. If yes (Y), the process returns to ST12. If no (N), ST29 is repeated.

(Description of received information control processing in embodiment 1)
FIG. 6 is a flowchart of received information control processing according to the first embodiment.
Processing of each ST (step) in the flowchart of FIG. 6 is performed according to a program stored in the control unit C of the terminal 2. In addition, this process is executed by multitasking in parallel with other various processes of the control unit C.
The flowchart shown in FIG. 6 is started when the control unit C is activated.

In ST41 of FIG. 6, it is determined whether or not information transmitted from another terminal 2 has been received. If yes (Y), the process proceeds to ST42, and if no (N), ST41 is repeated.
In ST42, it is determined whether or not the received information is a GPS information transmission request. If yes (Y), the process proceeds to ST43, and, if no (N), the process proceeds to ST44.
In ST43, GPS information is acquired from the GPS module 6, and the GPS information is transmitted to the terminal 2 that has requested transmission. Then, the process returns to ST41.
In ST44, it is determined whether or not the received information is information addressed to itself. If yes (Y), the process proceeds to ST45, and, if no (N), the process proceeds to ST46.
In ST45, the reception information is stored. Then, the process returns to ST41.
In ST46, the transmission process shown in the subroutine of FIG. 5 is executed to transmit (transfer) the received information. Then, the process returns to ST41.

(Operation of Example 1)
FIG. 7 is an operation explanatory diagram of the first embodiment, FIG. 7A is an explanatory diagram of information transmission of the first embodiment, and FIG. 7B is an explanatory diagram of information transmission when a user carrying the terminal moves.
In the information communication system 1 according to the first embodiment having the above-described configuration, the transmission direction 21 is set when the information is transmitted. When information is transmitted from the transmission source terminal 31 (terminal A) to the transmission destination terminal 32 (terminal B), first, the terminals included in the allowable range 22 in the transmission direction 21 from the transmission source terminal 31. Information is transmitted to 33 (terminal C). The transmitted information is also transferred to the destination terminal 32 (terminal B) based on the transmission direction 21 in the same manner in the next terminal 33 (terminal D to terminal H).

Therefore, in the information communication system 1 according to the first embodiment, the transmitted information has directivity. In the conventional configuration having no directivity, information may be transmitted to the terminals 34 (terminals C ′ and C ″) existing in the direction opposite to the transmission direction 21 as indicated by a broken line in FIG. Information may circulate around the terminal 31 or the like of the transmission source.
On the other hand, in the first embodiment, information having directivity is not transmitted in the direction opposite to the transmission direction 21. Therefore, the information can be quickly diffused away from the transmission source terminal 31 without returning to the transmission source terminal 31.

  In addition, when the location information of the mobile terminal is acquired by periodically communicating between the base station and the mobile terminal as in the case of a conventional mobile phone line, the source terminal is changed to the destination terminal. Although the transmission direction can be grasped, in the state where the base station does not function, it is impossible to grasp in which direction the transmission destination terminal is located from the transmission source terminal. Therefore, in the first embodiment, the transmission direction 21 is set with a random number, and information is repeatedly transmitted until the number of transmission attempts Na is reached. Therefore, information is transmitted in the random transmission direction 21 by the number of times of transmission attempts Na. Therefore, even in a situation where the position of the transmission destination terminal 32 cannot be grasped, it can be expected that any information reaches the transmission destination terminal 32.

  Furthermore, in the first embodiment, when there is no communicable terminal 2 or when there is no other terminal 32 in the allowable range 22 in the transmission direction 21, the terminal 32 is again set with an interval of the retransmission time t 1. Search for and resubmit. Therefore, as shown in FIG. 7B, the terminal 33 (terminal J) that has received the transmission information can carry the terminal 33 even if there are no other terminals 32 and 33 in the allowable range 22 in the transmission direction 21. Is moved by walking, train, car, etc., and when another terminal 33 (terminal K) exists in the allowable range 22 in the transmission direction 21, information is transmitted. Therefore, it is possible to transmit and receive information using the movement of the user carrying the terminal 2, and it can be expected that the information will reach a wider range than when the user does not move.

  In addition, when the transmission impossible count N2 that cannot be transmitted is equal to or greater than the range expansion count Nc, the allowable range 22 in the transmission direction 21 is expanded in the first embodiment. Therefore, when the transmission cannot be performed several times, the allowable range 22 is expanded and the condition of the transmission direction 21 is relaxed in order to eliminate the state where the information is stagnated at the terminal 33. Therefore, it can be expected that the number of terminals 33 that can be transmitted increases and information is stagnated.

(Example of change)
As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various change is performed within the range of the summary of this invention described in the claim. It is possible. Modification examples (H01) to (H06) of the present invention are exemplified below.
(H01) In the above-described embodiment, a smartphone is exemplified as a terminal. However, the present invention is not limited to this, and a portable terminal such as a laptop computer, a mobile phone, or a tablet terminal may be used as long as the terminal can perform wireless communication between terminals. Is available. Further, not all terminals need to be mobile terminals, and some or all of the terminals can be fixed terminals such as desktop personal computers and servers capable of wireless communication.

(H02) In the above embodiment, the wireless communication standard is not limited to the wireless LAN (WiFi (registered trademark)), and wireless communication of any standard such as Bluetooth (registered trademark), ZigBee (registered trademark) can be used. It is.
(H03) In the above-described embodiment, the exemplified specific numerical values can be changed to the design, specifications, etc., and can be set according to the user's input.

(H04) In the above embodiment, when the transmission direction 21 is set, the random direction is set based on the random number. However, the configuration is not limited to this. For example, when the address of the user of the transmission destination terminal is registered in the address book, when the transmission destination position information can be acquired, such as setting the transmission direction based on the address information and the current position Can be configured to set the transmission direction 21 based on the location information of the transmission destination. In addition, it is possible to adopt a configuration in which the direction is set every 360 ° / 2θ.
(H05) In the above-described embodiment, when the transmission is not possible, the terminal is re-searched when the retransmission time t1 has elapsed, and the configuration is repeated for the transmission impossibility determination number Nb. However, the present invention is not limited to this. Not. For example, it is also possible to employ a configuration in which a search error occurs if other terminals are always searched and no terminal that can transmit within a predetermined time (for example, 10 minutes) occurs.

(H06) In the above embodiment, when the transmission destination terminal 32 receives the information, information for notifying the transmission source terminal 31 that the information has reached the transmission destination terminal 32 is indicated as the transmission direction 21. Can be configured to transmit arrival confirmation information in the opposite direction. At this time, the transmission source terminal 31 can continue to transmit the information until the arrival confirmation information is received, and the transmission of the information can be stopped when the arrival confirmation is received.

2 ... terminal,
21 ... Transmission direction,
31 ... Information terminal,
33. Other terminals,
C101 ... direction setting means,
C103 ... terminal search means,
C106 ... direction calculation means,
C107 ... terminal selection means,
C108: Information transmission means.

Claims (4)

An information terminal capable of wireless communication with other terminals,
Direction setting means for setting a transmission direction for transmitting information from the information terminal;
Terminal search means for searching for another terminal capable of wireless communication with the information terminal;
Direction calculating means for calculating a direction from the information terminal toward the other terminal based on a current position of the other terminal;
Based on the transmission direction set by the direction setting means and the direction toward the other terminal calculated by the direction calculation means, information is transmitted from the other terminals capable of wireless communication. A terminal selection means for selecting another terminal;
Information transmitting means for transmitting information to another terminal selected by the terminal selecting means;
An information terminal comprising: The mobile information terminal and the other terminal that can be carried by a user,
The information terminal according to claim 1, further comprising: The direction setting means for setting the transmission direction based on a random number;
The information terminal according to claim 1, further comprising: An information terminal that can communicate wirelessly with other terminals
Direction setting means for setting a transmission direction for transmitting information from the information terminal;
Terminal search means for searching for another terminal capable of wireless communication with the information terminal;
Direction calculating means for calculating a direction from the information terminal toward the other terminal based on a current position of the other terminal;
Based on the transmission direction set by the direction setting means and the direction toward the other terminal calculated by the direction calculation means, information is transmitted from the other terminals capable of wireless communication. A terminal selection means for selecting another terminal,
Information transmitting means for transmitting information to another terminal selected by the terminal selecting means;
Program for information terminals to function as

Images