JP2016212585A - Information distribution system, portable terminal device, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information distribution system capable of emitting different acoustic identification information to each of a plurality of partially overlapped areas, and distributing proper information to a user even when the plurality of pieces of identification information are acquired by the user.SOLUTION: An information distribution system includes a plurality of sound emission devices and a portable terminal device. The plurality of sound emission devices are respectively associated with a plurality of partially overlapped areas, and configured to emit mutually different acoustic identification information to the areas with which the plurality of sound emission devices are respectively associated. The portable terminal device includes: a sound collection part for collecting a voice emitted by the sound emission device; a demodulation part for demodulating the identification information from the collected voice; a selection part for selecting the identification information satisfying a predetermined condition from the plurality of pieces of demodulated identification information; and a reproduction processing part for reproducing content corresponding to the selected identification information.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an information distribution system that provides various types of information using sound, and a mobile terminal device and a program used in the system.

  As an information distribution system that provides information together with sound, a system that emits sound by superimposing identification information on the sound of commercial television broadcasting has been proposed (for example, see Patent Document 1). In this system, a user demodulates identification information from voice collected using a smartphone, and acquires address information corresponding to the identification information from a server. Then, the content server corresponding to the address information is accessed to display various information related to the commercial on the screen of the smartphone.

JP 2012-155706 A

  However, the above-described system corresponds to a configuration in which single identification information is acquired by a smartphone, but it is difficult to appropriately distribute information when a plurality of identification information is acquired. For example, in a facility such as a store, a plurality of sound emitting devices arranged at a plurality of locations may emit different identification information. In this case, a plurality of pieces of identification information may be acquired depending on the location, and it is difficult to perform an appropriate process on the plurality of pieces of identification information.

  The present invention distributes appropriate information to a user even when different identification information sounded for a plurality of partially overlapping areas is emitted and the user acquires a plurality of identification information. It is an object to provide an information distribution system, a portable terminal device, and a program.

  The information distribution system of the present invention has a plurality of sound emitting devices and portable terminal devices. The plurality of sound emitting devices are associated with each of a plurality of overlapping areas, and emit sounded identification information different from each other in the associated areas. The mobile terminal device includes a sound collection unit that collects sound emitted by the sound emission device, a demodulation unit that demodulates identification information from the collected sound, a state determination unit that determines a reception state of the sound, and a plurality of demodulated units A selection unit that selects identification information that satisfies a predetermined condition from the identification information, and a reproduction processing unit that reproduces content corresponding to the selected identification information. The identification information satisfying the predetermined condition in the present invention includes, for example, identification information with the best reception state, identification information with the highest priority, and a small number of reproductions by other portable terminal devices (non-congested exhibits) Identification information).

  In the above invention, each sound emitting device may sound the identification information in a different frequency band from other sound emitting devices having overlapping areas.

  In the above invention, the information processing network and a server connected to the information communication network and determining content information based on the identification information may be further provided, and the reproduction processing unit may operate as follows. The demodulated identification information is transmitted to the server, content information corresponding to the identification information is acquired, and the content is reproduced based on the acquired content information.

  In the above invention, the mobile terminal device or the server further stores the overlapping area content information associated with the combination of the plurality of identification information, and the reproduction processing unit corresponds to the combination of the plurality of identification information demodulated by the demodulation unit. The content may be reproduced based on the overlapping area content information.

  The mobile terminal device of the present invention includes a sound collection unit, a demodulation unit, a selection unit, and a reproduction processing unit. The sound collection unit is a plurality of sound emitting devices associated with each of a plurality of overlapping areas, and emits a plurality of sounded identification information to the associated areas. The sound emitted from the device is collected. The demodulator demodulates the identification information from the collected sound. The selection unit selects identification information satisfying a predetermined condition from the plurality of demodulated identification information. The reproduction processing unit reproduces content corresponding to the selected identification information.

  The program of the present invention emits computerized sound identification information that is a plurality of sound emitting devices associated with each of a plurality of overlapping areas, and that is different from each other in the associated areas. Sound collecting means for collecting sounds emitted from a plurality of sound emitting devices, demodulating means for demodulating identification information from the collected sounds, and selecting identification information satisfying a predetermined condition from the plurality of demodulated identification information And a selection processing unit that plays back the content corresponding to the selected identification information.

  According to the present invention, different acousticized identification information is emitted to a plurality of areas, and content corresponding to identification information in a good reception state is reproduced in the mobile terminal device. Therefore, appropriate information can be distributed to the user, and the convenience of information distribution using sound can be improved.

The figure explaining the structure of the information delivery system which is embodiment of this invention The figure which shows the example of the superimposition system of acoustic ID The figure which shows the example of the contents table of the server The figure which shows the example of application to the exhibit explanation of the information distribution system Block diagram showing a configuration example of a sound emitting device Block diagram showing a configuration example of a smartphone The flowchart which shows acquisition operation | movement of acoustic ID of a smart phone (acoustic ID process part). The figure which shows the example of the overlapping area content table of a smart phone The flowchart which shows the acquisition operation and overlap area detection operation of acoustic ID of a smart phone (acoustic ID processing part) The figure which shows the example of the content table of the server which is another embodiment of this invention The figure explaining the structure of the information delivery system which is another embodiment of this invention

  An information distribution system according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram for explaining the configuration of the information distribution system 100.

  The information distribution system 100 emits an acoustic ID, which is identification information (ID code) obtained by sounding a plurality of sound emitting devices 1 (1A to 1E), and the smartphone 2 that is a mobile terminal device acquires from the sound. This is a system that acquires and reproduces content information corresponding to an ID code of this acoustic ID from a specific Internet site (URL) using the demodulated acoustic ID. In the information distribution system 100, different acoustic IDs are emitted toward a plurality of areas A to E, each of which overlaps a part of the range, and the user 6 (smart phone 2) receives the areas A to E at the current position. Acquires the sound ID being emitted. If the current position belongs to a plurality of areas, a plurality of acoustic IDs corresponding to those areas are acquired.

  In the information distribution system 100, for example, in a museum where a plurality of works of art (exhibits) such as paintings are displayed, when the explanation sound regarding each exhibit is provided to the visitor (user 6), This is suitable as a system for delivering useful information to the user 6 with respect to the exhibit being viewed. FIG. 1 is a top view of a passageway W of a museum, showing a state in which a plurality of exhibits (not shown) are installed on both side walls of the passageway W.

  The information distribution system 100 includes a plurality of sound emitting devices 1 (1A to 1E) and a server 4. The plurality of sound emitting devices 1 </ b> A to 1 </ b> E are associated with a plurality of exhibits installed on both side walls of the passage W on a one-to-one basis, and receive audio received from the content reproduction device 110 (110 </ b> A to 110 </ b> E) such as audio. Sound is emitted from the directional speaker 13 (see FIG. 5). The voice is, for example, a commentary voice of the corresponding exhibit. The sound emitting devices 1A to 1E are arranged below the corresponding exhibits (see FIG. 4).

  Further, the sound emitting device 1 emits the sound ID obtained by modulating (sounding) each of the plurality of ID codes into an acoustic signal together with the sound from the reproducing device 110. In this embodiment, the sound emitting devices 1A to 1E emit sound IDs 5A to 5E. Also, each sound emitting device 1A to 1E is associated with the areas A to E on a one-to-one basis, and the sound volume control and directivity of the acoustic IDs 5A to 5E are reached so that the acoustic IDs 5A to 5E reach the corresponding areas A to E. Sex control (beam control). Details will be described later. The sound IDs 5A to 5E emitted can be acquired using the smartphone 2 possessed by the user 6 in each of the areas A to E. In this embodiment, the sound emitting device 1 is configured to emit the sound ID by superimposing the sound ID on the commentary sound. However, the sound emitting device 1 does not sound the commentary sound and emits only the sound ID. It may be. In this case, the visitor obtains the explanation of the exhibit from the content information corresponding to the acoustic ID.

  As shown in FIG. 1, the areas A to E have a semicircular shape that diffuses toward opposing side walls with the sound emitting devices 1 A to 1 E as the center. In addition, the areas A to E are configured so as to partially overlap with any of the adjacent area and the facing area. In the overlapping portions 70 to 75, a plurality of acoustic IDs 5A to 5E corresponding to the overlapping areas A to E are acquired. For example, in the overlapping portion 70 between the area A and the area B, the acoustic IDs 5A and 5B are acquired.

  1 illustrates five areas A to E, but the number of areas is not limited to five. Further, the shapes of the areas A to E are not limited to the semicircular shape. Furthermore, the shapes of the areas A to E may not be the same.

  When a plurality of acoustic IDs 5 are acquired at the overlapping portions 70 to 75 described above, an acoustic ID 5 having a good reception state is selected. In this embodiment, an acoustic ID with a strong signal strength is selected. The signal intensity is, for example, a sound pressure level (dB). For example, at a place closer to the sound emitting device 1A than the sound emitting device 1B at the overlapping portion 70, the sound ID 5A has a stronger signal strength than the sound ID 5B, and thus the sound ID 5A is selected.

  Moreover, in order to make each acoustic ID5A-5E reach | attain each area AE, the volume and directivity of acoustic ID5A-5E are controlled as mentioned above. For example, the volume is set to increase as the area increases. The directivity control controls the timing of sound emission (output) from each speaker constituting the directional speaker 13 according to the shape of the area. For example, by delaying the timing of sound emission from the end speakers constituting the directional speaker 13 from the timing of sound emission from the center speaker, the sound is released so as to spread along the semicircular shapes of the areas A to E. Sounded. For example, the directivity control of the directional speaker 13 may be performed by using a technique described in Japanese Patent Application Laid-Open No. 2006-25153 of the present applicant. In addition, the sound signal from the playback device 110 is subjected to directivity control separately from the sound ID 5 and emitted from the directional speaker 13.

  When the acoustic IDs 5A to 5E are modulated from the ID code (information signal), as shown in FIG. 2, the frequency of the acoustic IDs 5 </ b> A to 5 </ b> E is shifted to the high frequency band of the sound reproduced by the directional speaker 13. As shown in FIG. 2, the upper limit frequency of audio used for moving image playback is about 16 kHz. In this embodiment, the frequency shift is performed so that the acoustic IDs 5A to 5E are included in the three bands 50A to 50C obtained by dividing the 17 to 20 kHz band into three. In addition, the sound ID 5 is shifted to a band different from the sound ID 5 emitted in the area adjacent to the areas A to E where sound is emitted and the area facing the area A to E. For example, the acoustic ID 5A is shifted to a band 50A different from the acoustic ID 5B (band 50B) and the acoustic ID 5C (band 50C). That is, the sound ID 5 is shifted to a band different from the sound ID 5 in another area overlapping the area where the sound ID 5 is emitted.

  In order for the smartphone 2 to acquire the acoustic ID 5 as described above, it is necessary to start the installed acoustic ID application program 200. The acoustic ID application program 200 is a program that separates and demodulates the acoustic ID 5 from the collected sound, transmits the acoustic ID 5 (ID code) to the server 4 and receives the corresponding content information. The acoustic ID application program 200 reproduces the content information received from the server 4. The content information is, for example, text data. When the smartphone 2 receives the text data, the smartphone 2 reproduces (displays) the text data on the display screen. In addition, audio data may be included in the content information, and commentary audio may be output from an earphone connected to the smartphone 2. In this way, it is not necessary to emit the commentary sound from the sound emitting device 1.

  The server 4 stores a content table 40 in which the ID codes of the acoustic IDs 5A to 5E as shown in FIG. 3 are associated with the above-described content information, and the content information corresponding to the received ID code (acoustic ID 5) is stored as the content. Read from the table 40 and send it back to the smartphone 2. In the content table 40 of this embodiment, content information of text data corresponding to the ID codes of the acoustic IDs 5A to 5E is registered. In the content table 40 of this embodiment, detailed explanation texts regarding the five exhibits associated with the sound emitting devices 1A to 1E and descriptions of how to appreciate the exhibits are registered as content information. Note that the content information is not limited to text data, and may be a URL of a content server different from the server 4 or image information related to exhibits.

  For example, in the area A where the exhibit corresponding to the sound emitting device 1A as shown in FIG. 4 is installed, the user 6 can view the explanation sound 61 related to the exhibit on which the exhibit and the acoustic ID 5A are superimposed. it can. The sound emitting device 1A repeatedly emits the explanation sound regarding the corresponding exhibit from the speaker 13 in a state where the acoustic ID 5A is superimposed during the business hours of the museum. In addition, a plate 60 on which words for prompting activation of an acoustic ID application program (sound ID application) 200 as shown in FIG.

  The user 6 operates the smartphone 2 as necessary to activate the acoustic ID application program 200. In addition, when already started, when starting automatically, the operation of the user 6 is unnecessary. The smartphone 2 in which the acoustic ID application program 200 is activated (the acoustic ID processing unit 22 is configured) picks up the emitted acoustic ID 5 and demodulates it into an ID code to the server 4 described above. Start accessing.

  When the user 6 is in the area A that does not overlap the areas B and C, the smartphone 2 collects only the sound ID 5A. Then, the smartphone 2 displays content information corresponding to the acoustic ID 5A (ID code) received from the server 4 on the screen. Moreover, when the user 6 exists in the duplication location 70, the smart phone 2 picks up sound ID5A, 5B. Then, the smartphone 2 transmits the acoustic ID 5A or the acoustic ID 5B ID code having a strong signal strength to the server 4. Thereafter, similarly to the above, the smartphone 2 displays content information corresponding to the acoustic ID 5A or the acoustic ID 5B received from the server 4 on the screen. At the same time, audio data included in the content information may be reproduced.

  Further, when the URL is included in the displayed content information, the user 6 selects this URL, whereby the web browser 26 (see FIG. 6) is activated, and the content of the selected URL is displayed. Is displayed. For example, an online sales site for goods related to exhibits is displayed. The smartphone 2 may automatically access the URL acquired from the server 4.

  Thus, different acousticized identification information (acoustic IDs 5A to 5E) is emitted to the plurality of areas A to E, and the content corresponding to the identification information having a good reception state in the mobile terminal device (smart phone 2). Played. Therefore, appropriate information can be distributed to the user, and the convenience of information distribution using sound can be improved.

  FIG. 5 is a block diagram illustrating a configuration example of the sound emitting device 1A. Since the sound emitting devices 1B to 1E have the same configuration, only the configuration of the sound emitting device 1A will be described. The sound emitting device 1 </ b> A is connected to the reproducing device 110 </ b> A, receives the acoustic signal of the sound reproduced by the reproducing device 110 </ b> A, and emits the sound from the directional speaker 13. The sound emitting device 11 emits sound by superimposing the acoustic ID 5A on the sound.

  The sound emitting device 1 </ b> A includes an audio player 12 and a directional speaker 13. The audio player 12 includes a control unit 15, an encoder 16, a beam control unit 17, a network communication unit 18, and a storage unit 19. The control unit 15 includes a CPU, a memory, and the like, and controls the operation of the entire apparatus. For example, the control unit 15 reads the ID code of the acoustic ID 5A stored in the storage unit 19 and transmits it to the encoder 16A. Further, the control unit 15 receives an instruction from the server 4 via the network communication unit 18 and updates the ID code of the acoustic ID 5 </ b> A stored in the storage unit 19. The network communication unit 18 includes a communication circuit and the like, and controls communication (packet communication) with the server 4 via the information communication network 3. The storage unit 19 is, for example, a hard disk device, and stores an ID code and the like.

  The encoder (modulation unit) 16 is configured by a DSP or the like, and audifies (spreads and modulates) the ID code received from the control unit 15 into the acoustic ID 5 </ b> A and transmits the acoustic ID to the beam control unit 17. Further, the encoder 16 modulates the received ID code into an acoustic ID 5A included in the frequency band (band 50A) shown in FIG. Specifically, the information signal of the ID code of the acoustic ID 5A is multiplied by a PN code (spreading code) 8A, and then modulated using the carrier 9A. At that time, the modulation is performed so that the acoustic ID 5A has a predetermined sound volume reaching the area A. The spread modulation process is described in detail in International Publication No. 2010/016589.

  The beam control unit (directivity control unit) 17 is configured by a DSP or the like, and controls the directivity of the acoustic signal. Specifically, the timing for outputting the acoustic signal to each speaker constituting the directional speaker 13 is controlled so as to output the acoustic signal as a beam directed to a predetermined focal point. In this embodiment, the directivity is controlled for each of the acoustic signal from the playback device 110A and the acoustic signal of the acoustic ID 5A. The acoustic signal from the playback device 110A is controlled so as to diffuse from the directional speaker 13 regardless of the area A, for example. The acoustic signal of the acoustic ID 5A is controlled so as to be emitted in a direction (diffusion direction) along the semicircular shape of the area A as described above. Each input acoustic signal is superimposed for each output speaker.

  The acoustic signal output from the beam control unit 17 is input to each speaker constituting the directional speaker 13 via a D / A converter, an amplifier, etc. (not shown). The directional speaker 13 is composed of, for example, a plurality of speakers arranged in a row. In this embodiment, sound emission of the acoustic ID 5A is always performed during the reproduction of the explanation sound by the reproduction device 110A, but the sound emission period may be arbitrarily set.

  FIG. 6 is a block diagram illustrating a configuration example of the smartphone 2. FIG. 6 shows only functions related to the present invention.

  The smartphone 2 includes a microphone 21, an acoustic ID processing unit 22, a network communication unit 25, a web browser 26, an operation unit 27, and a storage unit 28. The acoustic ID processing unit 22 is realized by the cooperation of the acoustic ID application program 200 and a control unit (computer), and includes an ID demodulation unit 23 reproduction processing unit 24.

  The microphone (sound collecting unit) 21 collects the sound emitted from the speaker 13. The ID demodulator 23 is a processing unit that demodulates the ID code by passing the audio signal obtained by collecting the sound through a matched filter that uses the spreading code used for spreading modulation as a coefficient. This demodulation process is also described in detail in the pamphlet of International Publication No. 2010/016589. The ID demodulator 23 measures the sound pressure level of the acoustic ID 5 from the sound signal obtained by collecting the sound. Therefore, the ID demodulator 23 includes the state determination unit of the present invention.

  The reproduction processing unit 24 communicates with the server 4 via the network communication unit 25, transmits the ID code (acoustic ID 5) demodulated by the ID demodulation unit 23, acquires content information, and acquires the content based on the content information. Reproduce. The network communication unit 25 includes a communication circuit and the like, and controls communication (packet communication) with the server 4 and the like via the information communication network 3. Further, when there are a plurality of demodulated ID codes, the reproduction processing unit 24 selects one ID code based on the measured sound pressure level, and transmits this ID code to the server 4. Therefore, the reproduction processing unit 24 includes the selection unit of the present invention.

  The web browser 26 displays a web page by accessing the URL included in the content information acquired by the content reproduction unit 24 according to the operation of the user 6. The operation unit 27 is a touch panel, for example, and detects an operation of the user 6 such as permission of communication with the information communication network 3. The storage unit 28 is, for example, a hard disk device, and stores an acoustic ID processing application program 200 and the like.

  FIG. 7 is a flowchart showing an operation of acquiring the acoustic ID 5 of the smartphone 2 (acoustic ID processing unit 22). The acoustic processing unit 22 stands by in step S1 while the acoustic ID 5 is not detected (NO in step S1). When the acoustic ID 5 is detected (YES in step S1), it is demodulated into an ID code (step S2), and it is determined whether a plurality of ID codes are demodulated (step S3). When a plurality of ID codes are demodulated (YES in step S3), the acoustic processing unit 22 selects the ID code of the acoustic ID 5 having a high sound pressure level (step S4), and sends the selected ID code to the server 4 Transmit (step S5). If a plurality of ID codes are not demodulated (NO in step S3), the acoustic processing unit 22 transmits the demodulated ID codes to the server 4 (step S5).

  The server 4 reads out the content information corresponding to the received ID code and returns it to the smartphone 2. When the smartphone 2 receives the content information in step S6, the acoustic ID processing unit 22 reproduces (displays) the content information (step S7). Furthermore, when there is a URL selection operation by the user 6 for the reproduced content information (YES in step S8), the acoustic ID processing unit 22 starts a web browser program (step S9), and uses the URL described above. It is passed to the web browser 26 (step S10), and the content server specified by this URL is accessed to display the web page (step S11).

  In the above-described embodiment, the example in which the acoustic ID 5 (ID code) is selected based on the sound pressure level that is the signal strength is shown. However, the present invention is not limited to this, and the acoustic ID 5 having a good reception state is selected. I can do it. Further, instead of the reception state, the acoustic ID 5 may be selected based on the priority order information. In this case, the priority order information may be stored in the storage unit 28 in advance. Furthermore, when the ID code is numerical information, the acoustic ID 5 may be selected according to the magnitude of the numerical value. Alternatively, the priority order information may be modulated in the sound emitting device 1 to emit sound together with the sound ID 5.

  Further, in the case of selecting the acoustic ID 5 based on the priority order information, the smartphone 2 may not determine the priority order. For example, the server 4 may determine the priority order. In this case, the acoustic ID processing unit 22 transmits all of the acquired ID codes of the plurality of acoustic IDs 5 to the server 4. Then, the server 4 selects an ID code having a higher priority from the received ID codes, and returns content information corresponding to the ID code.

  Furthermore, you may make it select acoustic ID5 based on the congestion condition in a museum. For example, the acoustic ID 5 corresponding to an area with a small number of users 6 (relatively free) is selected from the plurality of acoustic IDs 5 acquired by the smartphone 2. Thereby, the user 6 can be guided to a vacant exhibit. For example, when the number of ID codes received by the server 4 within a predetermined time is greater than or equal to a predetermined value, the area corresponding to the ID code (acoustic ID 5) is determined to be congested. Alternatively, when the number of users 6 included in an image captured by a camera provided in the vicinity of each exhibit is greater than or equal to a predetermined value, it is determined that the congestion is present. In this case, the server 4 may receive a plurality of ID codes from the smartphone 2 and select one of the plurality of ID codes based on the congestion situation. Alternatively, the server 4 may periodically transmit congestion status information to the smartphone 2, and the smartphone 2 may select an ID code based on the congestion status.

  The above shows an example in which the content information corresponding to the acoustic ID 5 (ID code) in a good reception state is reproduced when a plurality of acoustic IDs 5 are acquired by the smartphone 2. In addition to such a structure for reproducing content information, other content information corresponding to the acquired acoustic ID 5 can be additionally reproduced.

  For example, when a plurality of acoustic IDs 5 are acquired, the smartphone 2 reproduces content based on the content information corresponding to the acoustic ID 5 selected according to the sound pressure level as described above. Thereafter, the smartphone 2 reads and reproduces (displays on the display screen) the overlapping area content information corresponding to the plurality of acquired acoustic IDs 5 from the overlapping area content table 55 shown in FIG.

  The overlapping area content table 55 is stored in the storage unit 28 of the smartphone 2. In the overlapping area content table 55, the ID code of the acoustic ID 5 acquired for each of the overlapping portions 70 to 75 and the overlapping area content information are registered in association with each other. The overlapping area content information is, for example, text data. The overlapping area content information of this embodiment includes information that suggests (guides) the movement of the areas A to E to the user 6.

  For example, in the combination of the acoustic IDs 5A and 5B (ID codes 0001 and 0002) acquired at the overlapping portion 70, the overlapping area content information “Exhibition XX is the next to the exhibition XX” is displayed on the screen. The This indicates that the movement from the exhibit XX corresponding to the area A to the exhibit YY in the area B is a normal route.

  Note that the overlapping area content information is not limited to text data. For example, it may be image information including an arrow image indicating a current position and a route in an image of an arrangement map of exhibits. Further, the reproduction of the overlapping area content information is executed by, for example, the acoustic ID processing unit 22 (reproduction processing unit 24) realized by starting the acoustic ID application program 200. Therefore, the reproduction processing unit 24 includes an overlapping area reproduction processing unit in the present invention.

  Thus, the convenience of information distribution using sound can be further improved by additionally reproducing other content information for the overlapping portions 70 to 75 where a plurality of sound IDs 5 are acquired.

  FIG. 9 is a flowchart showing the operation of acquiring the acoustic ID 5 and the overlapping area detection operation of the smartphone 2 (acoustic ID processing unit 22). Note that the processing of the acquisition operation from step S1 to S11 is almost the same as the processing shown in FIG. 7, and only the movement detection operation after step S12 will be mainly described.

  If there is no URL selection operation by the user 6 in step S8, the sound ID processing unit 22 may be moving after reproduction (display) of the content. Therefore, the acoustic ID processing unit 22 proceeds to step S12 and is the same as step S3. It is determined whether a plurality of ID codes have been demodulated (step S12). When a plurality of ID codes are demodulated (YES in step S12), the acoustic ID processing unit 22 acquires corresponding overlapping area content information from the overlapping area content table 55 (step S13) and reproduces it on the screen of the smartphone 2 ( Display) (step S14). Then, the process returns to step S1. In addition, when a plurality of ID codes are not demodulated (NO in step S12), the process returns to step S1.

  The above shows an example in which one of the acoustic IDs 5 is selected when a plurality of acoustic IDs 5 are acquired by the smartphone 2. On the other hand, even when a plurality of acoustic IDs 5 are acquired, the content information can be reproduced without selecting any of the acoustic IDs 5.

  For example, the smartphone 2 transmits the acquired plurality of ID codes (acoustic ID 5) to the server 4, and the server 4 transmits content information using the content table 45 illustrated in FIG. In the content table 45, a single ID code and content information are registered in association with each other as in FIG. 3, and a plurality of ID codes and content information are registered in association with each other. That is, a combination of a plurality of acoustic IDs 5 (ID codes) acquired at overlapping portions 70 to 75 and content information are registered in association with each other. Therefore, the total number of areas is a total of 11 areas A to E and zones 70 to 75. In this case, the process for selecting one of the plurality of ID codes in steps S3 and S4 in FIG. 7 is not necessary.

  Thus, by reproducing content information for a combination of a plurality of ID codes, the number of areas for information distribution can be increased with a small number of ID codes. Therefore, the convenience of information distribution using sound can be further improved.

  In the above-described embodiment, one sound emitting device is arranged for one exhibit, but the present invention is not particularly limited thereto. For example, as shown in FIG. 11, you may arrange | position several sound emission apparatus 11A-11E with respect to one exhibit. The sound emitting devices 1A 'to 1E' emit sound for explaining the exhibits received from the connected playback device (not shown). The sound emitting devices 1A ′ to 1E ′ emit different acoustic IDs 50 (50A to 50E) (not shown) in the corresponding areas A ′ to E ′ together with the explanation voice.

  Then, the user 6 (smart phone 2) acquires the acoustic IDs 50A to 50E in the areas A ′ to E ′ and transmits them to the server 4. Then, the content is reproduced based on the content information received from the server 4. The content information associated with the acoustic IDs 50A to 50E (ID codes) is, for example, text data for detailed explanation regarding exhibits that can be seen from the areas A ′ to E ′. Specifically, the content information corresponding to the acoustic ID 50A in the area A ′ in front of the exhibit includes an explanation (text data) about the modeling that is visible only when the exhibit is viewed from the side.

  In the above-described embodiment, the sound IDs 5 and 50 are emitted using the directional speaker 13. However, a general speaker unit is provided for each area, and the sound ID and the sound signal of the playback device 110 are released. It is also possible to make a sound. Specifically, the sound emission range may be controlled by controlling the volume.

  Moreover, although the example which used the information delivery system of this invention for the sound emission apparatus of the museum was shown in the above embodiment, this invention is not limited to the sound emission apparatus of a museum. For example, the sound emitting device may be a radio receiver. Further, the sound emitting device may use a speaker such as digital signage installed in a facility such as a retail store or a shopping mall.

  The facilities are not limited to commercial facilities such as museums and stores, but can be applied to various facilities such as public facilities, private facilities, apartment houses, and office facilities. For example, for customers who enter the store or enter the store by superimposing an acoustic ID on the calling voice or music (BGM) emitted from a retail store front (in the vicinity of the store) or a speaker installed in the store It can be applied to a service for distributing information.

  The acoustic ID processing unit 22 of the smartphone 2 in the above-described embodiment is a functional unit realized by the cooperation of the control unit and the acoustic ID application program 200. The acoustic ID application program 200 is a computer-readable recording medium. Can be provided in a recorded state. As a computer-readable storage medium, a magnetic recording medium (magnetic tape, magnetic disk (HDD, FD), etc.), an optical recording medium (optical disk (CD, DVD), etc.), a magneto-optical recording medium, a semiconductor memory, etc. are applied. It is possible. Further, the above program can be downloaded via an information communication network such as the Internet. Moreover, in this embodiment, although the smart phone 2 is illustrated as a portable terminal device, it is not limited to the smart phone 2.

  Moreover, although the content reproduction | regeneration of the smart phone 2 in embodiment mentioned above is performed by receiving the content information corresponding to ID code from the server 4, it is not limited to this in particular. For example, the smartphone 2 may store the content table 40 in the storage unit 28 or the like. For example, a content table may be downloaded at the entrance of a museum, or a medium (such as a micro SD card) in which the content table is stored may be set. In this case, access from the smartphone 2 to the server 4 becomes unnecessary.

1 Sound emitting device 2 Smartphone (mobile terminal device)
3 Information communication network 4 Server

5 (5A-5E), 50 (50A-50E) Acoustic ID
6 User 12 Audio player 13 Directional speaker

Claims (6)

A plurality of sound emitting devices that are associated with each of a plurality of overlapping areas, and that emit different acousticized identification information to the associated areas;
A sound collecting unit for collecting the sound emitted by the sound emitting device, a demodulating unit for demodulating the identification information from the collected sound, and identifying information satisfying a predetermined condition from the plurality of demodulated identification information A portable terminal device including a selection unit and a reproduction processing unit that reproduces content corresponding to the selected identification information;
An information distribution system.   The information delivery system according to claim 1, wherein the sound emitting device sonicates the identification information in a frequency band different from other sound emitting devices having overlapping areas. An information and communication network;
A server connected to the information communication network and determining content information based on the identification information;
The reproduction processing unit transmits demodulated identification information to the server, acquires content information corresponding to the identification information, and reproduces content based on the acquired content information. The information distribution system described. The portable terminal device or the server further stores overlapping area content information associated with a combination of a plurality of identification information,
The information distribution system according to any one of claims 1 to 3, wherein the reproduction processing unit reproduces content based on overlapping area content information corresponding to a combination of a plurality of pieces of identification information demodulated by the demodulation unit. Sound is emitted from a plurality of sound emitting devices associated with each of a plurality of overlapping areas, each of which emits different acousticized identification information to the associated area. A sound collecting section for collecting the sound,
A demodulator that demodulates the identification information from the collected voice;
A selection unit that selects identification information satisfying a predetermined condition from the plurality of demodulated identification information;
A playback processing unit for playing back content corresponding to the selected identification information;
A mobile terminal device. Computer
Sound is emitted from a plurality of sound emitting devices associated with each of a plurality of overlapping areas, each of which emits different acousticized identification information to the associated area. Sound collection means for collecting
Demodulation means for demodulating the identification information from the collected sound;
Selecting means for selecting identification information satisfying a predetermined condition from the plurality of demodulated identification information;
Reproduction processing means for reproducing the content corresponding to the selected identification information;
Program to function as.

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