JP2009159390A - Location system and location method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To locate a telephone set using the telephone set having a normal communication function without requiring a special operation by a caller. <P>SOLUTION: A location information generation part 41 generates the location information of a speaker 45, a location code determination part 42 refers to a location code dictionary and determines a location code corresponding to the location information, an audible sound generation part 43 generates audible sound corresponding to the location code, and a speaker 45 outputs the audible sound. The telephone set 3 receives sound information including the audible sound as background sound and transmits it to a locating device 2. Telephone equipment 51 provided in an emergency contact or the like receives the sound information from the telephone set 3, an audible sound detection part 52 detects the audible sound output from the speaker 45 from the sound information, a code conversion part 53 converts the detected audible sound to the location code, and a location information determination part 54 refers to the location code dictionary and determines the location information corresponding to the location code. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a position specifying technique, and more particularly to a position specifying system and a position specifying method using a telephone communication network for specifying the position of a telephone based on background sound received by the telephone.

When a person in the facility makes an emergency contact (for example, 110 notification, 119 notification, etc.), the receiver (for example, police, fire department, etc.) who has received the emergency contact will receive the notification for prompt response. It is essential for the person to pinpoint the location of the sender of the emergency contact. However, when the caller is in an unfamiliar place on a daily basis, the caller often cannot accurately tell the receiver where he is.
Therefore, conventionally, a technique for specifying the position of a caller using a mobile phone with a GPS (Global Positioning System) function has been proposed. For example, Patent Document 1 below describes a mobile phone that is held by a guardian and obtains position data of the guardian based on a received GPS signal. In addition, a technique has been proposed for identifying from which base station area a call originates based on a caller number transmitted from a mobile phone that originated the call. In addition, a technique has been proposed in which a sender performs a special operation to notify a receiver of his / her location information from a dedicated terminal for emergency contact. Furthermore, the caller reads the QR code displayed on the guide board installed in the facility using a mobile phone to obtain the position information of the guide board, and the obtained position information of the guide board is sent to the receiver. On the other hand, a technique for transmitting data has been proposed.
JP 2007-87136 A

With the technology that identifies the location of the caller using a mobile phone with a GPS function, for example, when the caller is in a building, tunnel, underground mall, etc., communication with the satellite cannot be performed sufficiently, There is a problem that the location information of the caller cannot be obtained from the satellite. Further, the location information of the caller acquired by the mobile phone with the GPS function is two-dimensional information (planar information), not three-dimensional information (height information, depth information, depth information, etc.). Therefore, detailed location information of the caller cannot be obtained depending on the mobile phone.
Also, based on the caller ID sent from the mobile phone that made the call, the technology that identifies from which base station area the call originated can detect from which base station area the call originated. However, it is difficult to specify from which area of the city the call originates and from which floor of the building the call originates. In addition, with the progress of FMC (Fixed Mobile Convergence) in the future, it will become increasingly difficult to confirm location information from a simple caller ID.

The technique for notifying the receiver of location information using a dedicated terminal for emergency contact requires the caller to hold the dedicated terminal, and if the caller is not familiar with how to use the dedicated terminal Don't be. Furthermore, the technology that reads the QR (Quick Response) code displayed on the information board installed in the facility using a mobile phone and obtains the position information of the information board, the caller displays the QR code, etc. It does not work if you do not know the location of the guide plate.
The present invention has been made in view of such circumstances, and an object of the present invention is to use a telephone having a normal communication function without using a dedicated device for notifying position information, and a caller. It is an object of the present invention to provide a position specifying system and a position specifying method for specifying a detailed position of the telephone without requiring a special operation according to.

FIG. 1 is a diagram showing a system configuration example of the present invention.
The position specifying system of the present invention is a system using a telephone communication network that specifies the position of the telephone based on the background sound received by the telephone 3. The position specifying system includes the sound information generator 1 that is installed in a facility such as a tunnel, an underground mall, a building, and the like, and the sound information that is transmitted from the telephone 3 in the facility and received via the telephone communication network. And a position specifying device 2 for specifying the position of the telephone 3. The position specifying device 2 is disposed at an emergency contact address such as a police or a fire department. The telephone 3 is a telephone having a normal communication function, and is, for example, a mobile phone, a fixed phone, an IP phone, or the like.
The sound information generation device 1 includes a sound information generation unit 11 and one or a plurality of sound information output units 12. The sound information generation means 11 generates sound information including audible sound that represents position information of the area in the facility. The sound information output means 12 outputs the sound information including an audible sound indicating the position information of the area where the sound information is located.
An emergency contact information such as a police station, a fire department, or a disaster prevention center is provided with sound information transmitting / receiving means 21 and a position specifying device 2. The position specifying device 2 includes a position detecting unit 22 that detects the position of the sender from the sound information transmitted from the sound information transmitting / receiving unit 21 and a display unit 23.
The sound information transmitting / receiving means 21 receives the sound information transmitted from the telephone 3 via the telephone communication network, and transmits the corresponding operator's voice to the caller's telephone 3 via the telephone communication network.
The position detection means 22 detects the position of the telephone 3 based on the received sound information. The display means 23 displays the detected position of the telephone 3, that is, the position of the caller.

FIG. 2 is a diagram for explaining position specifying processing using the position specifying system of the present invention shown in FIG.
First, the sound information generating means 11 in the sound information generating device 1 is used to detect the position information of each area in the facility 10 where the sound information generating device 1 is installed (for example, the C area on the second basement floor of the AA shopping center). (See # 1 in FIG. 2). The sound information generating means 11 determines a position code corresponding to the generated position information with reference to a position code dictionary (not shown) in the sound information generating device 1 (see # 2 in FIG. 2). The position code dictionary is correspondence information between position information and position codes, as will be described later with reference to FIG. Then, the sound information output means 12 generates an audible sound corresponding to the determined position code (see # 3 in FIG. 2), and outputs the generated audible sound (see # 4 in FIG. 2). . The sound information output means 12 may generate the synthesized sound by synthesizing the generated audible sound with sound (original sound) such as music or chime, and output the generated synthesized sound.

Next, when a caller in the facility 10 uses the telephone 3 to call an emergency contact such as a police station, a fire department, or a disaster prevention center, and the call is connected, A conversation is made with the caller via the sound information transmitting / receiving means 21.
At this time, the telephone 3 receives the audible sound output from the sound information output means 12 together with the sound generated by the caller as a background sound, via the telephone call network 6 and the sound information transmission / reception means 21. To the position specifying device 2.
That is, the sound information including the audible sound output from the telephone 3 and received by the sound information transmitting / receiving means 21 through the telephone communication network 6 is transmitted to the position specifying device 2 (see # 5 in FIG. 2). reference).
The position detection unit 22 of the position specifying device 2 detects the audible sound generated in the above # 3 from the sound information received from the telephone 3 (see # 6 in FIG. 2), and obtains a position code corresponding to the audible sound. Obtain (see # 7 in FIG. 2). The position detector 22 refers to the position code dictionary in the position specifying device 2 and detects position information corresponding to the acquired position code (see # 8 in FIG. 2). Then, the display unit 23 displays the position of the telephone 3 indicated by the detected position information (see # 9 in FIG. 2).

That is, in the present invention, the above problem is solved as follows.
(1) A position specifying system using a telephone communication network is provided that specifies the position of the telephone based on the background sound received by the telephone. The position specifying system is installed in a facility, and sound information generating means for generating sound information including an audible sound indicating the position information of the area in the facility, and an audible sound indicating the position information of the area where the position is located. A sound information generating device including one or a plurality of sound information output means for outputting the sound information, and the sound information transmitted from the telephone in the facility and received via the telephone communication network. Position information specifying means for specifying the position.
(2) The sound information generating means generates a audible sound representing the position information by synthesizing a plurality of audible sounds having at least different frequencies.
(3) The audible sound representing the position information is composed of a plurality of synthesized sounds that last for a unit time, and the sound information generating means selects a combination of the frequencies of the plurality of synthesized sounds to represent the position information. Generate a listening sound.
(4) The position information is three-dimensional position information.
(5) A position specifying method using a telephone communication network is used that specifies the position of the telephone based on the background sound received by the telephone. The position specifying method generates sound information including an audible sound representing position information of an area in the facility, and represents position information of an area where each sound information output means is located from one or a plurality of sound information output means. The sound information including an audible sound is output, and the position of the telephone is specified from the sound information transmitted from the telephone in the facility and received via the telephone communication network.

In the present invention, the following effects can be obtained.
(1) The position specifying system of the present invention outputs sound information including audible sound representing position information of an area in a facility, and from the sound information transmitted from a telephone in the facility and received via a telephone communication network. The position of the telephone is specified.
Therefore, according to the present invention, it is possible to specify the detailed position of the telephone using a telephone having a normal communication function without using a dedicated device for notifying position information. Further, according to the present invention, even when the caller does not know the detailed position where he / she is, the caller can notify the emergency contact address of his / her position without requiring a special operation. Moreover, according to this invention, the emergency contact address can specify the position of the sender who moves within the facility in real time. As a result, the emergency contact can quickly grasp the situation that the caller is encountering, and can perform an action corresponding to the situation.
(2) The position specifying system of the present invention synthesizes a plurality of audible sounds having at least different frequencies to generate an audible sound representing the position information. The audible sound representing the position information is composed of a plurality of synthesized sounds that last for a unit time, and the position specifying system generates a audible sound representing the position information by selecting a combination of frequencies of the plurality of synthesized sounds. To do. Therefore, according to the present invention, it is possible to output an audible sound representing position information having a larger amount of information than when the position information is represented by a single audible sound.
(3) The position information may be three-dimensional position information. Therefore, according to the present invention, even when the caller is in a three-dimensional facility, the detailed position of the caller can be specified. For example, if the caller is in a building, you can determine what floor the caller is in, and if the caller is in a tunnel, how far away from the tunnel entrance It is possible to specify whether or not.

FIG. 3 is a diagram showing the configuration of the first exemplary embodiment of the present invention.
The position specifying system shown in FIG. 3 is a system using the telephone communication network 6 that specifies the position of the telephone 3 based on the background sound received by the telephone 3.
The background sound is a sound including an audible sound representing position information described later. The position specifying system is installed in the facility 10 and generates the sound information from the sound information generating device 4 and the telephone 3 in the facility 10, and the sound received from the telephone communication network 6 and the telephone equipment 51. And a position specifying device 5 for specifying the position of the telephone 3 from the information.

The sound information generating device 4 includes a position information generation unit 41, a position code determination unit 42, an audible sound generation unit 43, a distribution facility 44, a speaker 45, and a position code storage unit 46. The position information generation unit 41 generates position information of each speaker 45 and transmits it to the position code generation unit 42. The position information may be three-dimensional position information. Further, the position information generation unit 41 transmits identification information indicating which speaker 45 the generated position information corresponds to (for example, identification information of the speaker 45 in which the position information is generated) to the distribution facility 44. The position code determination unit 42 receives position information from the position information generation unit 41, refers to a position code dictionary in the position code storage unit 55 described later, and determines a position code corresponding to the position information.
The audible sound generating unit 43 generates an audible sound corresponding to the determined position code (an audible sound indicating the position information) and transmits the audible sound to the distribution facility 44. The audible sound generation unit 43 synthesizes a plurality of audible sounds having at least different frequencies (for example, a plurality of audible sounds having different frequencies and signal levels), and the position information generated by the position information generation unit 41 is obtained. An audible sound that represents may be generated. The audible sound representing the position information may be composed of a plurality of synthesized sounds that last for a unit time, and the audible sound generating unit 43 selects a combination of frequencies of the plurality of synthesized sounds, and An audible sound representing information may be generated.

  When receiving the audible sound from the audible sound generation unit 43, the distribution facility 44, based on the identification information received from the position information generation unit 41 described above, the speaker 45 located at the position represented by the position code corresponding to the audible sound. Is identified. The distribution facility 44 instructs the specified speaker 45 to output the audible sound. The speaker 45 receives an instruction from the distribution facility 44 and outputs an audible sound. The position code storage unit 46 stores a position code dictionary that is correspondence information between position information and position codes. The telephone 3 in the facility 10 performs telephone communication with the position specifying device 2 through the telephone communication network 6 in accordance with the operation of the caller. Specifically, after the call is connected, the telephone 3 transmits sound information including an audible sound output from the speaker 45 to the telephone equipment 51 provided in the position specifying device 5.

The emergency contact is provided with a telephone facility 51 and a position specifying device 5. The position specifying device 5 includes an audible sound detection unit 52, a code conversion unit 53, a position information determination unit 54, a position display unit 55, and a position code storage unit 56.
Upon receiving a telephone call from the telephone 3, the telephone facility 51 receives sound information transmitted from the telephone 3 and transmits a corresponding operator voice to the telephone 3.
The audible sound detection unit 52 detects an audible sound indicating the position information output by the speaker 45 in the sound information generating device 4 from the received sound information. The code conversion unit 53 converts the detected audible sound into a position code corresponding to the audible sound, using a known technique for converting sound information into code information. The position information determination unit 54 determines (or detects) position information corresponding to the converted position code with reference to a position code dictionary in the position code storage unit 56 described later. The position display unit 55 displays the position indicated by the determined position information. The position code storage unit 56 stores a position code dictionary that is correspondence information between position information and position codes.

FIG. 4 is a diagram illustrating a data configuration example of the position code dictionary.
In FIG. 4, the position code dictionary stored in the position code storage unit 46 included in the sound information generating device 4 will be described as an example. The data structure of the position code dictionary stored in the position code storage unit 56 provided in the position specifying device 5 is the same as the data structure of the position code dictionary shown in FIG. As shown in FIG. 4, the position code dictionary includes correspondence information between position information of an area in the facility 10 and position code information which is code information indicating the position information. Position information and code information are associated with each other for each piece of facility manager information, facility information, address, detailed area information (altitude, depth), and detailed area information (surface information). Facility manager information is identification information of the manager of the facility 10. The facility information is identification information of the facility 10. The address is information indicating the address of the facility 10. Detailed area information (altitude, depth) is altitude information or depth information (three-dimensional information) of an area in the facility 10. The position code dictionary may include depth information as three-dimensional information. Detailed area information (plane information) is plane information (two-dimensional information) of the area. The position code dictionary record (one line of data) is, for example, 7 bytes long.

FIG. 5 is a diagram illustrating an example of a configuration of an audible sound generation unit included in the sound information generation device.
The audible sound generation unit 43 includes a selector 101, a buffer 102, a decoder 103, sound sources 104-1 to 104-n, a level converter 105, a gate 106, and a synthesizer 107.
The selector 101 extracts unit length data from the position code determined by the position code determination unit 42 and stores it in the buffer 102. The decoder 103 selects an audible sound corresponding to the data stored in the buffer 102. Specifically, the decoder 103 transmits a control signal to the level converter 105 to control the signal level of the audible sound from the sound source, and opens and closes the gate 106 to select the audible sound to be synthesized.
Each sound source outputs an audible sound. The frequency of the audible sound output from each sound source is different. The level converter 105 controls the signal level of the audible sound output from the sound source based on the control signal transmitted from the decoder 103.
The gate 106 performs an opening / closing operation according to an instruction from the decoder 103 and selects an audible sound to be transmitted to the synthesizer 107. The synthesizer 107 synthesizes the audible sound transmitted through the gate 106 to generate a synthesized sound, and outputs the synthesized sound. As a result of the synthesis of the audible sound by the synthesizer 107, for example, as shown in FIG. 6, for example, a plurality of synthesized sounds each continuing for a unit time (for example, 20 ms) represents position information corresponding to the position code. Output as audible sound.
By arbitrarily setting the audible sound output time, the synthesizer 107 can output an arbitrary number of synthesized sounds as audible sounds representing position information. Since the frequency that can be transmitted through the telephone line is 3.4 kHz or less, it is desirable that the frequency does not become 3.4 kHz or less even if overtones are generated due to resonance in the facility. Therefore, the audible sound generation unit 43 selects an audible sound to be synthesized so that the frequency component of the synthesized sound is 2000 Hz or more, for example.

FIGS. 7A and 7B are diagrams showing a plurality of audible sounds representing characters constituting a position code.
As described with reference to FIG. 5, the audible sound generation unit 43 selects audible sounds having different frequencies, controls the signal level of each audible sound, and displays audible sound (synthetic sound) representing position information. ) Is generated. That is, the audible sound generation unit 43 expresses each character constituting the position code determined by the position code determination unit 42 by a combination of a plurality of audible sound frequencies and signal level differences (magnitude relationship). The unit time of this expression is, for example, 20 ms, which is the voice accommodation time of one packet of a standard IP telephone communication network. The audible sound generation unit 43 selects and synthesizes a plurality of audible sounds representing one character among the characters constituting the position code, generates a synthesized sound representing the one character, and generates the synthesized sound as the unit. Continue for hours.
The audible sound generating unit 43 generates, for each character constituting the position code, a synthesized sound representing each character, and generates an audible sound representing the position information by connecting a predetermined number of the generated synthesized sounds. To do.

  The expression of the characters constituting the position code by combining a plurality of audible sounds will be described below. When one character is expressed by a combination of three different frequencies f1, f2, and f3 and a difference in signal level of audible sound corresponding to each frequency, a certain character C is expressed as C (f1, f2, f3) and Can be represented. Regarding the signal level, f1> f2> f3. For example, C (f2, f1, f3) and C (f1, f2, f3) have the same frequency combination but different signal level combinations, and therefore represent different characters. The audible sound generation unit 43 synthesizes each audible sound that constitutes a combination of the frequency and signal level representing each character, and generates a synthesized sound that represents each character. Specifically, the synthesized sound of the three audible sounds shown in FIG. 7A is a synthesized sound expressing C (f2, f1, f3), and the three audible sounds shown in FIG. 7B. Are synthesized to express C (f1, f2, f3).

The connection of synthesized sounds representing the characters constituting the position code will be described with reference to FIG. The audible sound generation unit 43 synthesizes audible sounds (audible sounds 300, 301, 302) corresponding to the frequencies Fa, Fb, Fc representing the characters C (Fa, Fb, Fc) constituting the position code. , A synthesized sound 303 representing the character C is generated. The signal level is Fa>Fb> Fc, and the frequency is Fc>Fa> Fb. The audible sound generation unit 43 continues the synthesized sound 303 for a unit time of 20 ms, for example. The audible sound generation unit 43 generates a synthesized sound in the same manner as described above for other characters constituting the position code. Then, for example, 50 generated synthesized sounds are connected to generate an audible sound that lasts for one second. The audible sound that lasts for one second is an audible sound that represents all the characters that make up the position code (an audible sound that represents position information).
The audible sound generation unit 43 selects three different frequencies from 12 different frequencies such as a PB (push button) selection signal, and configures a position code by combining the selected frequency and the difference in signal level. If each character is expressed, 1320 types of characters can be expressed. This has a representation capability equivalent to a 10.3 bit length in binary number in unit time. If the output time of the audible sound is set to 1 second, it is equivalent to 50 unit times, so that it has a representation capability of 515 bits (64 bytes) in binary conversion.
In addition, the information amount of the audible sound representing the position information generated by the audible sound generation unit 43 is further increased by increasing the number of synthesized sounds to be connected or increasing the number of frequency candidates to be selected. be able to. For example, when three different frequencies are selected from 30 candidate frequencies to be selected, there are 2460 combinations of frequencies to be selected, and 14.5 bits can be expressed within a unit time. If the audible sound output time is set to 1 second, an audible sound having an information amount of 728 bits (91 bytes) can be generated.

FIG. 9 is a diagram illustrating an example of a sound information generation process flow by the sound information generation apparatus.
First, the position information generation unit 41 generates position information of the speaker 45 (step S1), and transmits the identification information of the speaker 45 to the distribution facility 44 (step S2). Next, the position code determination unit 42 refers to the position code dictionary in the position code storage unit 55 to determine a position code corresponding to the generated position information (step S3). The audible sound generation unit 43 generates an audible sound corresponding to the determined position code (step S4). Then, the distribution facility 44 instructs the speaker 45 indicated by the identification information transmitted to the distribution facility 44 in step S2 to output the audible sound generated in step S4 (step S5).

FIG. 10 is a diagram illustrating an example of a position specifying process flow by the position specifying device.
The telephone facility 51 receives a telephone call from the telephone 3 and receives sound information from the telephone 3 (step S11). The audible sound detection unit 52 determines whether the audible sound output by the speaker 45 is detected from the received sound information (step S12). If the audible sound detection unit 52 determines from the received sound information that the audible sound output by the speaker 45 has not been detected, the process proceeds to step S16. If the audible sound detection unit 52 determines that the audible sound output by the speaker 45 is detected from the received sound information, the code conversion unit 53 converts the detected audible sound into a position code (step) S13). Then, the position information determination unit 54 refers to the position code dictionary and determines position information corresponding to the converted position code (step S14). The position display unit 55 displays the position indicated by the determined position information (step S15). The telephone equipment 51 determines whether or not the call with the telephone 3 has been terminated (step S16). If the telephone facility 51 determines that the call with the telephone 3 has not ended, the process returns to step S12. If the telephone facility 51 determines that the call with the telephone 3 has ended, the process ends.

FIG. 11 is a diagram for explaining an example of processing for specifying the position of a caller moving within a facility. In FIG. 11, the caller makes a call with an operator such as an emergency contact using a mobile phone, and along the route indicated by the arrow in FIG. 11, A in the area 2 (area 2-B 3 F) on the third basement floor in the facility 10 An example will be described in which a point moves to point C of area 1 (area 1-B2F) on the second basement floor via point B of area 2 (area 2-B2F) on the second basement floor.
Further, it is assumed that the speakers 45 included in the sound information generating device 4 are arranged in each area of the facility 10.

When the caller moves from point A to point B shown in FIG. 11, sound information generating apparatus 4 determines a position code corresponding to area 2-B2F, and an audible sound corresponding to the position code is assigned to area 2-B2F. Is output from the speaker 45 installed in the. The position specifying device 5 provided in the emergency contact or the like receives the output audible sound through the mobile phone, specifies the position corresponding to the received audible sound, and displays it.
Next, when the caller moves from point B to point C, the sound information generating device 4 determines a position code corresponding to area 1-B2F, and an audible sound corresponding to the position code is transferred to area 1-B2F. Output from the installed speaker 45. The position specifying device 5 receives the output audible sound through a mobile phone, specifies a position corresponding to the received audible sound, and displays it. Thus, according to the present invention, even if the caller is moving within the facility 10 where the radio waves of the GPS system do not reach or within the three-dimensional facility 10, for example, the caller does not need a special operation. Can be notified to the emergency contact information where the position specifying device 5 is arranged.
Further, the emergency contact address can specify the position of the caller moving in the facility 10 in real time. As a result, the emergency contact quickly grasps the situation that the caller is encountering, and performs actions corresponding to the situation (for example, rescue of the caller or instruction of an optimum evacuation route for the caller). Can be executed.

FIG. 12 is a diagram showing a configuration of the second exemplary embodiment of the present invention.
Among the processing units included in the position specifying system illustrated in FIG. 12, a processing unit having the same sign as the processing unit included in the position specifying system illustrated in FIG. 3 is the same as the processing unit included in the position specifying system illustrated in FIG. 3. Detailed description is omitted.
The position specifying system shown in FIG. 12 includes a sound information generating device 7 and a position specifying device 5. The sound information generation device 7 includes an original sound generation unit 47 and a sound synthesis unit 48 in addition to the processing unit included in the sound information generation device 4 shown in FIG. The original sound generation unit 47 generates an original sound (music, chime, etc.) to be output to the facility 10.
The sound synthesizer 48 synthesizes the audible sound generated by the audible sound generator 43 and the original sound generated by the original sound generator 47 to generate a synthesized sound. For example, as shown in FIG. 13, the audible sound 200 and the original sound 201 are superimposed by superimposing the audible sound 200 on the original sound 201 at a predetermined timing (for example, when the signal level of the original sound 201 becomes equal to or lower than a predetermined value). To generate a synthesized sound. The distribution facility 44 outputs the synthesized sound generated by the sound synthesizer 48 from the speaker 45.

The telephone 3 transmits sound information including the output synthesized sound to the telephone equipment 51 of the position specifying device 5 through the telephone communication network 6. Then, the audible sound detection unit 52 detects the audible sound output from the speaker 45 from the sound information received by the telephone equipment 51.
In the position specifying system described with reference to FIG. 12, the sound information generating device 7 generates a synthesized sound by synthesizing the audible sound representing the position information and the original sound, and uses the telephone 3 to position the synthesized sound. 5 is transmitted. Therefore, for an operator such as an emergency contact address, an unpleasant sensation when listening to sound information transmitted from the telephone set 3 is alleviated compared to a case where an audible sound representing position information and an original sound are not synthesized.

It is a figure which shows the system configuration example of this invention. It is a figure explaining the position specific process using the position specific system of this invention. It is a figure which shows the structure of the 1st Embodiment of this invention. It is a figure which shows the data structural example of a position code dictionary. It is a figure which shows an example of a structure of the audible sound production | generation part with which a sound information generation apparatus is provided. It is a figure which shows the synthetic sound produced | generated by the audible sound production | generation part. It is a figure which shows the several audible sound which represents the character which comprises a position code. It is a figure explaining the connection of the synthetic sound which represents each character which comprises a position code. It is a figure which shows an example of the sound information generation process flow by a sound information generator. It is a figure which shows an example of the position specific process flow by a position specific apparatus. It is a figure explaining an example of the process which pinpoints the position of the sender who moves the inside of a facility. It is a figure which shows the structure of the 2nd Embodiment of this invention. It is a figure explaining the synthesis | combination of an audible sound and an original sound.

Explanation of symbols

1, 4, 7 Sound information generating device 2, 5 Location specifying device 3 Telephone 10 Facility 11 Sound information generating means 12 Sound information outputting means 21 Sound information transmitting / receiving means 22 Position detecting means 23 Display means 41 Position information generating section 42 Position code determination Unit 43 audible sound generation unit 44 distribution facility 45 speaker 46 position code storage unit 47 original sound generation unit 48 sound synthesis unit 51 telephone facility 52 audible sound detection unit 53 code conversion unit 54 position information determination unit 55 position display unit 56 position code storage unit 101 Selector 102 Buffer 103 Decoder 104-1, 104-2, 104-n Sound source 105 Level converter 106 Gate 107 Synthesizer 200, 300, 301, 302 Audible sound 201 Original sound 303 Synthetic sound

Claims (5)

A position specifying system using a telephone communication network that specifies a position of the telephone based on background sound received by the telephone,
Sound information generating means for generating sound information including audible sound indicating the position information of the area in the facility, and outputting the sound information including audible sound indicating the position information of the area where the device is located A sound information generating device comprising one or more sound information output means,
A position specifying system comprising: a position specifying device for specifying a position of the telephone from the sound information transmitted from the telephone in the facility and received via the telephone communication network. The position specifying system characterized in that the sound information generating means generates a audible sound representing the position information by synthesizing a plurality of audible sounds having at least different frequencies. The audible sound representing the position information consists of a plurality of synthesized sounds that last for a unit time,
The position specifying system characterized in that the sound information generating means generates a audible sound representing the position information by selecting a combination of frequencies of the plurality of synthesized sounds. The position specifying system according to claim 1, wherein the position information is three-dimensional position information. A location specifying method using a telephone communication network that specifies the location of the phone based on background sound received by the phone,
The sound including the audible sound representing the position information of the area where each sound information output means is generated from one or a plurality of sound information output means by generating sound information representing the position information of the area in the facility Output information,
A position specifying method, characterized in that the position of the telephone is specified from the sound information transmitted from the telephone in the facility and received via the telephone communication network.

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