WO2016190567A1 - Information providing system using ultrasonic speaker transmitting differential signal - Google Patents

Information providing system using ultrasonic speaker transmitting differential signal Download PDF

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Publication number
WO2016190567A1
WO2016190567A1 PCT/KR2016/004837 KR2016004837W WO2016190567A1 WO 2016190567 A1 WO2016190567 A1 WO 2016190567A1 KR 2016004837 W KR2016004837 W KR 2016004837W WO 2016190567 A1 WO2016190567 A1 WO 2016190567A1
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signal
speaker
ultrasonic
information providing
frequency band
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PCT/KR2016/004837
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French (fr)
Korean (ko)
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제영호
임용묵
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주식회사 제이디솔루션
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Publication of WO2016190567A1 publication Critical patent/WO2016190567A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves

Definitions

  • the present invention relates to an information providing system using an ultrasonic speaker, and more particularly, to ensure accuracy and reliability of recognition from noise or environmental influences generated from surroundings, and to apply accurate information on position information when applied to a receiving terminal.
  • the present invention relates to an information providing system using an ultrasonic speaker that transmits a differential signal that provides an identifying effect.
  • the smart phone is a generalized technology to check the current position based on the information displayed on the liquid crystal of the terminal receives the report in real time based on the GPS information.
  • a method of providing information using an audible frequency band signal that can be received by a mobile terminal (receiving terminal) such as a smartphone can be considered, but the receiving terminal is somewhat separated from a speaker that transmits a voice signal.
  • a mobile terminal receiving terminal
  • the receiving terminal is somewhat separated from a speaker that transmits a voice signal.
  • the accuracy and reliability of recognition are significantly degraded from the noise or environmental influences generated from the surroundings. Therefore, further solutions must be sought.
  • the present invention has been made to solve the problems of the prior art as described above, the object of which is to ensure the accuracy and reliability of recognition from noise or environmental effects occurring in the surroundings, when applied to the receiving terminal location information
  • An object of the present invention is to provide an information providing system using an ultrasonic speaker that transmits a differential signal that provides an effect of confirming accurate information about the present invention.
  • An information providing system using an ultrasonic speaker for providing information to a receiving terminal through an ultrasonic speaker by modulating a signal of an audio frequency band into a carrier of an ultrasonic band
  • an encoder including a differential signal generation module for generating a differential pair signal by dividing a signal frequency in an audible frequency band, and a signal processing module for converting and generating a digital signal generated by the differential signal generation module into an analog signal.
  • Information providing system using an ultrasonic speaker for transmitting a differential signal characterized in that.
  • a speaker unit including a speaker in an audible frequency band and a directional speaker in an ultrasonic band; And an output signal generation unit which is transmitted to the speaker unit and includes a transmission signal generation unit configured to generate a signal by fusing a signal of an audio frequency band and a carrier wave of an ultrasonic band.
  • the audible frequency signal is a differential pair signal consisting of bits inverted by dividing a frequency in an 18-20 kHz band into a first channel selected from a frequency band of 18,050 to 18,950 Hz and a second channel selected from a frequency band of 19,050 to 19.950 Hz.
  • Information providing system using an ultrasonic speaker for transmitting a differential signal characterized in that being transmitted to.
  • a microphone for receiving a modulated signal, a signal extracting unit for extracting an audio frequency band signal from the signal, a signal amplifier for amplifying the extracted audio frequency band signal, and transmitting the amplified signal to the outside
  • a receiving terminal including a speaker unit;
  • Ultrasonic wave transmitting a differential signal further comprising a location information providing server for receiving a data signal including a physical address from the receiving terminal, extracts the actual address data stored in the physical address and transmits to the receiving terminal to transmit the voice signal Information transmission and reception system using a speaker.
  • the accuracy and reliability of the recognition is secured from the noise or environmental effects occurring in the surroundings, when applied to a receiving terminal such as a smart phone provides an effect of confirming accurate information about the location information do.
  • FIG. 1 is a block diagram of an information providing system using an ultrasonic speaker according to the present invention.
  • FIG 2 is an exemplary view of a signal processing process of an information providing system using an ultrasonic speaker of the present invention.
  • Figure 3 shows an example of a signal split transmission method used in the information providing system using the ultrasonic speaker of the present invention.
  • FIG. 4 is a structural diagram of an encoder constituting an information providing system using an ultrasonic speaker of the present invention.
  • FIG. 5 is a configuration example of an information transmission and reception system using an ultrasonic speaker according to the present invention.
  • 6 is a diagram showing the effect of noise on the pair signal.
  • FIG. 1 is a block diagram of an information providing system using an ultrasonic speaker according to an embodiment of the present invention, the information providing system using an ultrasonic speaker including a transmission signal generator for generating a signal by fusing a signal of an audible frequency band and a carrier of an ultrasonic band.
  • a transmission signal generator for generating a signal by fusing a signal of an audible frequency band and a carrier of an ultrasonic band.
  • the information providing system is a speaker unit 100 consisting of a first speaker 10 of the audible frequency band of 18 ⁇ 20kH and a second speaker 20 of the ultrasonic band of 40kHz or more. ; And a transmission signal generation unit 110 which is transmitted to the speaker unit 100 and generates a signal by fusing a signal of an audible frequency band and a carrier wave of an ultrasonic band.
  • the speaker unit 100 is the first speaker 10 of the audio frequency band and the second speaker 20 which is a directional speaker of the ultrasonic band.
  • the first speaker 10 is preferably a directional speaker applying an array method for reproducing a signal of an audible frequency band of 18 ⁇ 20kH
  • the second speaker 20 is composed of a speaker of an ultrasonic band of 40kHz or more do.
  • the speaker unit 100 may be composed of only the second speaker 20 of the ultrasonic band.
  • the transmission signal generating unit 110 of the information providing system 500 using the sound wave speaker according to the first embodiment of the present invention has a first speaker 10 (a second embodiment of the present invention).
  • Second amplifier 21 used for amplifying the first amplifier 11 used for amplifying the audio frequency band and the second speaker 20 for amplifying the carrier signal in the ultrasonic region.
  • a signal modulator 111 capable of amplifying the signal by fusing the signals amplified from each other.
  • the receiving terminal 300 modulates the ultrasonic signal of the 40 kHz or more band which becomes a carrier wave using the signal of the audible frequency band of 18-20 kH which is a signal wave containing predetermined information (including signal amplification if necessary).
  • the signal recognition rate of can be greatly improved.
  • the "information” may include location information, advertisement information, and various kinds of information useful to the receiving terminal user.
  • the information signal of the audible frequency band of 18 ⁇ 20kH transmitted through the first speaker 10 is Direct transmission to the microphone 310 of the receiver terminal allows voice transmission through the amplifier 312 and the speaker 313 built in the receiver terminal.
  • the receiving terminal 300 when the receiving terminal 300 is located at a long distance, the ultrasonic modulation signal of the 40kHz or more band transmitted from the second speaker 20 is transmitted to the microphone 310 of the receiving terminal, and the amplifier 312 built in the receiving terminal and Voice transmission is enabled through the speaker 313.
  • the receiving terminal is provided with a signal extraction unit 311 capable of receiving an ultrasonic fusion signal in a band of 40 kHz or more and filtering only an information signal in an audible frequency band of 18-20 kH, which is a signal wave.
  • the transmission of the information may be simultaneously transmitted to the receiving terminal through the first speaker 10 and the second speaker 20, and only through the first speaker 10 as necessary. It may further include a transmission control unit (not shown) to be sent or to be sent using only the second speaker 20.
  • a frequency signal of 18 ⁇ 20kHz which is an audible frequency band signal transmitted through the speaker unit 100 according to the present invention in various ways Create a differential pair signal by dividing, combine these channels to generate a signal, send both signals simultaneously for a predetermined time, eg 1/25 seconds, and compare them in a comparator (not shown) of the receiving terminal 300 To check.
  • a differential pair signal refers to a signal composed of data having a pair of inverted signal values, and even when the signal is generated and transmitted as a pair signal by transmitting only the same signal that is not the differential pair signal at a different frequency, the receiver compares the two signals for reliability. In this case, if the interference caused by noise occurs in this case, a pair of signals are buried as shown in FIG. 6, which may cause a serious problem in reliability of data reception. In the present invention, the data value of one of two signals, which are pairs, is reversed to generate a pair of differential pair signals.
  • the encoder 120 as shown in FIG. 4 is required.
  • the encoder 120 includes a differential signal generation module 121 and a differential signal processing module 122.
  • the differential signal generation module 121 generates a differential pair signal by dividing a signal of an audible frequency band by a frequency of 18 to 20 kHz in various ways, and the differential signal processing module 122 is a differential signal generation module 121. Convert the digital signal generated by the signal to 18 ⁇ 20kHz and generate it. As an example of frequency division, a signal of 18-20 kHz is divided into 20 channels, as shown in Table 1 below, and a first channel selected from channels 1 to 10 and a second channel selected from channels 11 to 20 are mutually divided. Generate an inverted differential pair signal.
  • Table 1 channel frequency Channel 1 18,050 Hz Channel 2 18,150 Hz Channel 3 18,250 Hz Channel 4 18,350 Hz Channel 5 18,450 Hz Channel 6 18,550 Hz Channel 7 18,650 Hz Channel 8 18,750 Hz Channel 9 18,850 Hz Channel 10 18,950 Hz Channel 11 19,050 Hz Channel 12 19,150 Hz Channel 13 19,250 Hz Channel 14 19,350 Hz Channel 15 19,450 Hz Channel 16 19,550 Hz Channel 17 19,650 Hz Channel 18 19,750 Hz Channel 19 19,850 Hz Channel 20 19,950 Hz
  • a differential pair signal may be generated using a frequency of 18,450 Hz of channel 5 as the first channel and 19,450 Hz of channel 15 as the second channel.
  • 18,450 Hz of channel 5 may be generated.
  • a differential pair signal as shown in Table 2 can be generated.
  • At least one signal when generating and transmitting a differential pair signal, at least one signal can be normally received in spite of interference caused by noise, thereby stably transmitting and receiving signals.
  • Each of the data corresponding to the first channel and the second channel is a SYNC signal and a cell unique identifier (Cell ID or CID) that enables the receiver to extract a packet boundary, and a packet received by the decoder.
  • a checksum is used to detect errors in the system to ensure stable data reception and to detect errors in data reception.
  • the signal converted as described above is amplified by the first amplifier 11 and transmitted through the first speaker 10 (in the case of the first embodiment) to be delivered to a receiving terminal 300 located at a short distance, or a transmission signal generator
  • the signal modulation process at 110 may be transmitted through the second speaker 20 to be transmitted to the receiving terminal 300 located at a far distance.
  • each receiving terminal 300 receives the respective signals, analyzes the differential pair signal, and if the identity is recognized, it is transmitted to the outside through the built-in amplifier 312 and the speaker 313 Done. To this end, the receiving terminal 300 may check whether the reception is normal by using a comparator (not shown), for example, by multiplying two data signals (normal signal 0000000000) or by using a value obtained by adding a normal signal (normal signal 1111111111). .
  • a comparator not shown
  • the owner of the receiving terminal can establish a system that can accurately check the real-time location information through the speaker 313 built in the terminal.
  • FIG. 5 illustrates an information transmission and reception system using an ultrasonic speaker according to the present invention.
  • a signal transmitted from the information providing system 500 using the ultrasonic speaker is related to a physical address to which simple location information is matched.
  • the receiving terminal 300 receives the data and accesses the information providing server 400 to transmit a data signal, and the information providing server 400 receives the data signal and stores the actual address data stored in the corresponding physical address. After extracting and transmitting it to the receiving terminal, the receiving terminal 300 to receive it to transmit the actual address through the speaker 313 built in voice also constitutes an embodiment of the present invention.
  • each block of the block diagram and each step of the flowchart attached to the present specification may be performed by program instructions. Since these program instructions may be mounted on a processor of a general-purpose digital terminal or other programmable data processing equipment, the instructions executed by these processors may provide a means for performing the functions described in each block of the block diagram or in each step of the flowchart. Will be created.
  • program instructions may be stored in a digital terminal usable or digital terminal readable memory that may be directed to a computer or other programmable data processing equipment to implement functionality in a particular manner, so that the digital terminal available or digital terminal Instructions stored in the readable memory may also produce an article of manufacture containing instruction means for performing the functions described in each block of the block diagram or in each step of the flowchart.
  • Program instructions may also be mounted on a digital terminal or other programmable data processing equipment, such that a series of operating steps are performed on the digital terminal or other programmable data processing equipment to create a process that is executed by the digital terminal, thereby creating a digital terminal or other. Instructions implementing the programmable data processing equipment may also provide steps for performing the functions described in each block of the block diagram and in each step of the flowchart.
  • each block or step may represent a portion of a module, segment or code that includes one or more executable instructions for executing a specified logical function (s).
  • a specified logical function s.
  • the functions noted in the blocks or steps may occur out of order.
  • the two blocks or steps shown in succession may in fact be executed substantially concurrently or the blocks or steps may sometimes be performed in the reverse order, depending on the functionality involved.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

The present invention, with respect to an information providing system that uses an ultrasonic speaker to modulate a signal in an audible frequency bandwidth to a carrier wave in an ultrasonic bandwidth and provide information to a receiving terminal through the ultrasonic speaker, provides an information providing system using an ultrasonic speaker that transmits a differential signal, the system characterized by comprising: a differential signal generating module that divides signal frequencies in an audible frequency bandwidth and generates a differential pair signal; and an encoder including a signal processing module that converts digital signals generated by the differential signal generating module to generate analog signals.

Description

차동신호를 송신하는 초음파 스피커를 이용한 정보제공시스템Information provision system using ultrasonic speaker to transmit differential signal
본 발명은 초음파 스피커를 이용한 정보제공시스템에 관한 것으로, 보다 상세하게는 주변에서 발생하는 소음이나 환경적 영향으로부터 인식의 정확성과 신뢰성이 확보되어, 수신 단말기에 적용할 경우 위치정보에 대한 정확한 정보를 확인시켜주는 효과를 제공하는 차동신호를 송신하는 초음파 스피커를 이용한 정보제공시스템에 관한 것이다.The present invention relates to an information providing system using an ultrasonic speaker, and more particularly, to ensure accuracy and reliability of recognition from noise or environmental influences generated from surroundings, and to apply accurate information on position information when applied to a receiving terminal. The present invention relates to an information providing system using an ultrasonic speaker that transmits a differential signal that provides an identifying effect.
최근 스마트폰과 같은 모바일 단말기를 이용한 위치정보제공 시스템이 일반적으로 제공되어지고 있다. 즉 스마트폰은 GPS 정보를 기반으로 하여 자신의 위치를 실시간으로 보고 받아 단말기의 액정에 표시된 정보를 통해 현재의 위치를 확인하는 것은 일반화된 기술에 해당한다.Recently, a location information providing system using a mobile terminal such as a smart phone has been generally provided. In other words, the smart phone is a generalized technology to check the current position based on the information displayed on the liquid crystal of the terminal receives the report in real time based on the GPS information.
다만, 단말기의 조작이 미숙한 사람들이나 혹은 지하시설 및 건물 안에 위치하여 GPS 정보를 수신할 수 없는 경우에는 현재 자신이 어느 위치에 있는지 확인하기가 매우 곤란해지는 문제가 있다. 예를 들어, 복잡한 구조의 상가 및 백화점 등을 방문할 때, 현재 위치나 동선을 확인하려면 일일이 주위 사람에게 물어봐야 하는 번거로움이 있어 이에 대한 해결방안이 모색되어질 필요가 있다.However, when the operation of the terminal is inexperienced people or underground facilities and buildings can not receive the GPS information there is a problem that it is very difficult to determine the current location. For example, when visiting complex structured malls and department stores, there is a hassle of asking people around you to check the current location or moving lines, and solutions need to be sought.
이를 위해 스마트폰 등의 모바일 단말기(수신 단말기)가 내장된 마이크로폰으로 수신할 수 있는 가청주파수 대역의 신호를 이용하는 정보제공 방법을 생각해 볼 수 있지만, 음성신호를 송출해 주는 스피커로부터 수신 단말기가 다소 이격되어진 경우에는 주변에서 발생하는 소음이나 환경적 영향으로부터 인식의 정확성과 신뢰성이 현저히 저하되는 문제가 있어 이에 대한 추가적인 해결방안이 모색되어져야만 한다. To this end, a method of providing information using an audible frequency band signal that can be received by a mobile terminal (receiving terminal) such as a smartphone can be considered, but the receiving terminal is somewhat separated from a speaker that transmits a voice signal. In this case, there is a problem that the accuracy and reliability of recognition are significantly degraded from the noise or environmental influences generated from the surroundings. Therefore, further solutions must be sought.
본 발명은 상기한 바와 같은 종래기술이 가지는 문제를 해결하기 위해 안출된 것으로, 그 목적은 주변에서 발생하는 소음이나 환경적 영향으로부터 인식의 정확성과 신뢰성이 확보되어, 수신 단말기에 적용할 경우 위치정보에 대한 정확한 정보를 확인시켜주는 효과를 제공하는 차동신호를 송신하는 초음파 스피커를 이용한 정보제공시스템을 제공함에 있다.The present invention has been made to solve the problems of the prior art as described above, the object of which is to ensure the accuracy and reliability of recognition from noise or environmental effects occurring in the surroundings, when applied to the receiving terminal location information An object of the present invention is to provide an information providing system using an ultrasonic speaker that transmits a differential signal that provides an effect of confirming accurate information about the present invention.
상기한 바와 같은 본 발명의 기술적 과제는 다음과 같은 수단에 의해 달성되어진다.The technical problem of the present invention as described above is achieved by the following means.
(1) 가청주파수 대역의 신호를 초음파 대역의 반송파로 변조하여 초음파 스피커를 통해 수신 단말기에 정보를 제공하는 초음파 스피커를 이용한 정보제공시스템에 있어서,(1) An information providing system using an ultrasonic speaker for providing information to a receiving terminal through an ultrasonic speaker by modulating a signal of an audio frequency band into a carrier of an ultrasonic band,
가청주파수 대역의 신호 주파수를 분할하여 차동 페어(pair) 신호를 생성하는 차동신호생성모듈과, 차동신호생성모듈에서 생성된 디지털 신호를 아날로그 신호로 변환하고 발생시키는 신호처리모듈을 포함하는 인코더를 포함하는 것을 특징으로 하는 차동신호를 송신하는 초음파 스피커를 이용한 정보제공시스템.And an encoder including a differential signal generation module for generating a differential pair signal by dividing a signal frequency in an audible frequency band, and a signal processing module for converting and generating a digital signal generated by the differential signal generation module into an analog signal. Information providing system using an ultrasonic speaker for transmitting a differential signal, characterized in that.
(2) 상기 (1)에 있어서,(2) In the above (1),
가청주파수 대역의 스피커와 초음파 대역의 지향성스피커로 이루어진 스피커부; 및 상기 스피커부로 전달되고, 가청주파수 대역의 신호와 초음파 대역의 반송파를 융합하여 신호를 생성하는 송출신호생성부를 포함하는 차동신호를 송신하는 초음파 스피커를 이용한 정보제공시스템.A speaker unit including a speaker in an audible frequency band and a directional speaker in an ultrasonic band; And an output signal generation unit which is transmitted to the speaker unit and includes a transmission signal generation unit configured to generate a signal by fusing a signal of an audio frequency band and a carrier wave of an ultrasonic band.
(3) 상기 (1)에 있어서,(3) In the above (1),
가청주파수 영역의 신호는 18~20kHz 대역의 주파수를 18,050~18,950Hz의 주파수 대역 중 선택된 제1채널과, 19,050~19.950Hz의 주파수 대역 중 선택된 제2채널로 분할하여 상호 역전된 비트로 이루어진 차동 페어 신호로 전송되어지는 것을 특징으로 하는 차동신호를 송신하는 초음파 스피커를 이용한 정보제공시스템.The audible frequency signal is a differential pair signal consisting of bits inverted by dividing a frequency in an 18-20 kHz band into a first channel selected from a frequency band of 18,050 to 18,950 Hz and a second channel selected from a frequency band of 19,050 to 19.950 Hz. Information providing system using an ultrasonic speaker for transmitting a differential signal, characterized in that being transmitted to.
(4) 상기 (1) 내지 (3) 중 선택된 정보제공시스템; 및(4) an information providing system selected from (1) to (3) above; And
변조된 신호를 수신하는 마이크로폰과, 상기 신호로부터 가청주파수 대역의 신호를 추출하는 신호추출부와, 상기 추출된 가청주파수 대역의 신호를 증폭하는 신호증폭부, 및 상기 증폭된 신호를 외부로 송출하는 스피커부를 포함하는 수신 단말기;A microphone for receiving a modulated signal, a signal extracting unit for extracting an audio frequency band signal from the signal, a signal amplifier for amplifying the extracted audio frequency band signal, and transmitting the amplified signal to the outside A receiving terminal including a speaker unit;
를 포함하는 차동신호를 송신하는 초음파 스피커를 이용한 정보송수신시스템.Information transmission and reception system using an ultrasonic speaker for transmitting a differential signal comprising a.
(5) 상기 (4)에 있어서,(5) As described in (4),
상기 수신 단말기로부터 물리주소를 포함한 데이터 신호를 수신하고, 상기 물리주소에 저장된 실제 주소 데이터를 추출하여 상기 수신 단말기에 전송하여 음성으로 송출하도록 하는 위치정보제공서버를 더 포함하는 차동신호를 송신하는 초음파 스피커를 이용한 정보송수신시스템.Ultrasonic wave transmitting a differential signal further comprising a location information providing server for receiving a data signal including a physical address from the receiving terminal, extracts the actual address data stored in the physical address and transmits to the receiving terminal to transmit the voice signal Information transmission and reception system using a speaker.
상기와 같은 본 발명에 따르면, 주변에서 발생하는 소음이나 환경적 영향으로부터 인식의 정확성과 신뢰성이 확보되어, 스마트폰과 같은 수신 단말기에 적용할 경우 위치정보에 대한 정확한 정보를 확인시켜 주는 효과를 제공한다. According to the present invention as described above, the accuracy and reliability of the recognition is secured from the noise or environmental effects occurring in the surroundings, when applied to a receiving terminal such as a smart phone provides an effect of confirming accurate information about the location information do.
도 1은 본 발명에 따른 초음파 스피커를 이용한 정보제공시스템의 구성도이다.1 is a block diagram of an information providing system using an ultrasonic speaker according to the present invention.
도 2는 본 발명의 초음파 스피커를 이용한 정보제공시스템의 신호처리과정의일예시도이다.2 is an exemplary view of a signal processing process of an information providing system using an ultrasonic speaker of the present invention.
도 3는 본 발명의 초음파 스피커를 이용한 정보제공시스템에서 사용하는 신호분할 전송방식의 일예를 나타낸다.Figure 3 shows an example of a signal split transmission method used in the information providing system using the ultrasonic speaker of the present invention.
도 4는 본 발명의 초음파 스피커를 이용한 정보제공시스템을 구성하는 인코더의 구조도이다.4 is a structural diagram of an encoder constituting an information providing system using an ultrasonic speaker of the present invention.
도 5는 본 발명에 따른 초음파 스피커를 이용한 정보송수신시스템의 구성예이다.5 is a configuration example of an information transmission and reception system using an ultrasonic speaker according to the present invention.
도 6은 페어 신호에 대한 노이즈의 영향을 보여주는 그림이다.6 is a diagram showing the effect of noise on the pair signal.
이하, 본 발명에 따른 바람직한 실시 형태를 첨부된 도면을 참조하여 상세하게 설명한다. 첨부된 도면과 함께 이하에 개시될 상세한 설명은 본 발명의 예시적인 실시형태를 설명하고자 하는 것이며, 본 발명이 실시될 수 있는 유일한 실시형태를 나타내고자 하는 것이 아니다. 이하의 상세한 설명은 본 발명의 완전한 이해를 제공하기 위해서 구체적 세부사항을 포함한다. 그러나, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자는 본 발명이 이러한 구체적 세부사항 없이도 실시될 수 있음을 안다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The detailed description, which will be given below with reference to the accompanying drawings, is intended to explain exemplary embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced. The following detailed description includes specific details in order to provide a thorough understanding of the present invention. However, one of ordinary skill in the art appreciates that the present invention may be practiced without these specific details.
몇몇 경우, 본 발명의 개념이 모호해지는 것을 피하기 위하여 공지의 구조 및 장치는 생략되거나, 각 구조 및 장치의 핵심기능을 중심으로 한 블록도 형식으로 도시될 수 있다.In some instances, well-known structures and devices may be omitted or shown in block diagram form centering on the core functions of the structures and devices in order to avoid obscuring the concepts of the present invention.
명세서 전체에서, 어떤 부분이 어떤 구성요소를 "포함(comprising 또는 including)"한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 포함할 수 있는 것을 의미한다. 또한, 명세서에 기재된 "…부", "…기", "모듈" 등의 용어는 적어도 하나의 기능이나 동작을 처리하는 단위를 의미하며, 이는 하드웨어나 소프트웨어 또는 하드웨어 및 소프트웨어의 결합으로 구현될 수 있다. 또한, "일(a 또는 an)", "하나(one)", "그(the)" 및 유사 관련어는 본 발명을 기술하는 문맥에 있어서(특히, 이하의 청구항의 문맥에서) 본 명세서에 달리 지시되거나 문맥에 의해 분명하게 반박되지 않는 한, 단수 및 복수 모두를 포함하는 의미로 사용될 수 있다.Throughout the specification, when a part is said to "comprising" (or including) a component, this means that it may further include other components, except to exclude other components unless specifically stated otherwise. do. In addition, the terms “… unit”, “… unit”, “module”, etc. described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. have. Also, "a or an", "one", "the", and the like are used differently in the context of describing the present invention (particularly in the context of the following claims). Unless otherwise indicated or clearly contradicted by context, it may be used in the sense including both singular and plural.
본 발명의 실시예들을 설명함에 있어서 공지 기능 또는 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명을 생략할 것이다. 그리고 후술되는 용어들은 본 발명의 실시예에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 관례 등에 따라 달라질 수 있다. 그러므로 그 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.In describing the embodiments of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the embodiments of the present invention, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the contents throughout the specification.
이하, 첨부된 도면들을 참조하여 본 발명의 실시예에 대해 살펴보기로 한다.Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
도 1은 본 발명에 따른 초음파 스피커를 이용한 정보제공시스템의 구성도로써, 가청주파수 대역의 신호와 초음파 대역의 반송파를 융합하여 신호를 생성하는 송출신호생성부를 포함하는 초음파 스피커를 이용한 정보제공시스템의 일실시예를 나타낸다.1 is a block diagram of an information providing system using an ultrasonic speaker according to an embodiment of the present invention, the information providing system using an ultrasonic speaker including a transmission signal generator for generating a signal by fusing a signal of an audible frequency band and a carrier of an ultrasonic band. One embodiment is shown.
상기 본 발명의 제1실시예의 구성에 의하면, 상기 정보제공시스템은 18~20kH의 가청주파수 대역의 제1스피커(10)와 40kHz 이상의 초음파 대역의 제2스피커(20)로 이루어진 스피커부(100); 및 상기 스피커부(100)로 전달되고, 가청주파수 대역의 신호와 초음파 대역의 반송파를 융합하여 신호를 생성하는 송출신호생성부(110)를 포함한다.According to the configuration of the first embodiment of the present invention, the information providing system is a speaker unit 100 consisting of a first speaker 10 of the audible frequency band of 18 ~ 20kH and a second speaker 20 of the ultrasonic band of 40kHz or more. ; And a transmission signal generation unit 110 which is transmitted to the speaker unit 100 and generates a signal by fusing a signal of an audible frequency band and a carrier wave of an ultrasonic band.
상기 본 발명의 제1실시예에 따른 초음파 스피커를 이용한 정보제공시스템의 구성예로써, 스피커부(100)는 가청주파수 대역의 제1스피커(10)와 초음파 대역의 지향성스피커인 제2스피커(20)로, 상기 제1스피커(10)는 바람직하게는 18~20kH의 가청주파수 대역의 신호를 재생하는 어레이 방식을 적용한 지향성 스피커로 하고, 제2스피커(20)는 40kHz 이상의 초음파 대역의 스피커로 구성한다.As a configuration example of the information providing system using the ultrasonic speaker according to the first embodiment of the present invention, the speaker unit 100 is the first speaker 10 of the audio frequency band and the second speaker 20 which is a directional speaker of the ultrasonic band. ), The first speaker 10 is preferably a directional speaker applying an array method for reproducing a signal of an audible frequency band of 18 ~ 20kH, the second speaker 20 is composed of a speaker of an ultrasonic band of 40kHz or more do.
또한, 본 발명의 제2실시예의 구성에 의하면, 상기 스피커부(100)는 초음파 대역의 제2스피커(20)만으로 구성되어질 수 있다.In addition, according to the configuration of the second embodiment of the present invention, the speaker unit 100 may be composed of only the second speaker 20 of the ultrasonic band.
도 2에 도시한 바와 같이, 본 발명의 제1실시예에 따른 음파 스피커를 이용한 정보제공시스템(500)의 송출신호생성부(110)는 제1스피커(10)(본 발명의 제2실시예에서는 불필요)로 송출되는 가청주파수 대역의 신호 증폭에 사용되어지는 제1증폭부(11)와 초음파 영역의 반송파 신호를 증폭하는 제2스피커(20)의 증폭에 사용되어지는 제2증폭부(21)로부터 각각 증폭된 신호를 융합하여 신호를 증폭할 수 있는 신호변조부(111)를 포함한다. As shown in FIG. 2, the transmission signal generating unit 110 of the information providing system 500 using the sound wave speaker according to the first embodiment of the present invention has a first speaker 10 (a second embodiment of the present invention). Second amplifier 21 used for amplifying the first amplifier 11 used for amplifying the audio frequency band and the second speaker 20 for amplifying the carrier signal in the ultrasonic region. And a signal modulator 111 capable of amplifying the signal by fusing the signals amplified from each other.
이에 의하면, 반송파가 되는 40kHz 이상 대역의 초음파 신호를 소정의 정보를 포함하는 신호파인 18~20kH의 가청주파수 대역의 신호를 이용하여 변조(필요시 신호증폭을 포함)함으로써, 수신 단말기(300)에서의 신호인식률을 크게 향상시킬 수 있게 된다.According to this, the receiving terminal 300 modulates the ultrasonic signal of the 40 kHz or more band which becomes a carrier wave using the signal of the audible frequency band of 18-20 kH which is a signal wave containing predetermined information (including signal amplification if necessary). The signal recognition rate of can be greatly improved.
상기에서 「정보」는 위치정보, 광고정보, 기타 수신 단말기 사용자에게 유용한 다양한 정보를 포함할 수 있다.In the above description, the "information" may include location information, advertisement information, and various kinds of information useful to the receiving terminal user.
상기 본 발명에 따른 초음파 스피커를 이용한 정보제공시스템(500)에 의하면, 수신 단말기(300)가 근거리에 위치한 경우 제1스피커(10)를 통해 송출되는 18~20kH의 가청주파수 대역의 정보신호를 상기 수신 단말기의 마이크로폰(310)에 직접 전달하여 수신 단말기에 내장된 증폭기(312) 및 스피커(313)를 통해 음성송출이 가능하도록 한다.According to the information providing system 500 using the ultrasonic speaker according to the present invention, when the receiving terminal 300 is located at a short distance, the information signal of the audible frequency band of 18 ~ 20kH transmitted through the first speaker 10 is Direct transmission to the microphone 310 of the receiver terminal allows voice transmission through the amplifier 312 and the speaker 313 built in the receiver terminal.
반면에 수신 단말기(300)가 원거리에 위치한 경우 제2스피커(20)로부터 송출되는 40kHz 이상 대역의 초음파 변조신호를 상기 수신 단말기의 마이크로폰(310)에 전달하여 수신 단말기에 내장된 증폭기(312) 및 스피커(313)를 통해 음성송출이 가능하도록 한다.On the other hand, when the receiving terminal 300 is located at a long distance, the ultrasonic modulation signal of the 40kHz or more band transmitted from the second speaker 20 is transmitted to the microphone 310 of the receiving terminal, and the amplifier 312 built in the receiving terminal and Voice transmission is enabled through the speaker 313.
후자의 경우에는 수신 단말기에 40kHz 이상 대역의 초음파 융합 신호를 수신하여 이중에서 신호파인 18~20kH의 가청주파수 대역의 정보신호만을 필터링할 수 있는 신호추출부(311)가 구비되는 것이 바람직하다.In the latter case, it is preferable that the receiving terminal is provided with a signal extraction unit 311 capable of receiving an ultrasonic fusion signal in a band of 40 kHz or more and filtering only an information signal in an audible frequency band of 18-20 kH, which is a signal wave.
따라서, 본 발명의 제1실시예에서는 상기 정보의 전송은 제1스피커(10)와 제2스피커(20)를 통해 동시에 수신 단말기에 전송되어질 수 있고, 필요에 따라 제1스피커(10) 만을 통해 송출되도록 하거나, 제2스피커(20)만을 이용하여 송출이 되어지도록 송출제어부(미도시)를 더 포함할 수 있다. Therefore, in the first embodiment of the present invention, the transmission of the information may be simultaneously transmitted to the receiving terminal through the first speaker 10 and the second speaker 20, and only through the first speaker 10 as necessary. It may further include a transmission control unit (not shown) to be sent or to be sent using only the second speaker 20.
도 3은 수신 단말기에서의 정보신호 수신에 대한 정확성과 신뢰성을 확보하기 위한 것으로, 본 발명에 따른 스피커부(100)를 통해 송출되는 가청주파수 대역의 신호인 18~20kHz의 주파수 신호를 다양한 방법으로 분할하여 차동 페어(pair) 신호를 생성하고, 이들 채널을 조합하여 신호를 생성하며 두 신호를 동시에 소정 시간, 예로 1/25초 동안 발신하고 수신 단말기(300)의 비교기(미도시)에서 이를 비교하여 확인하도록 한다.3 is to secure the accuracy and reliability of the reception of the information signal at the receiving terminal, a frequency signal of 18 ~ 20kHz, which is an audible frequency band signal transmitted through the speaker unit 100 according to the present invention in various ways Create a differential pair signal by dividing, combine these channels to generate a signal, send both signals simultaneously for a predetermined time, eg 1/25 seconds, and compare them in a comparator (not shown) of the receiving terminal 300 To check.
본 발명에서 차동 페어신호는 한쌍의 역전된 신호값을 갖는 데이터로 이루어진 신호를 말하며, 차동 페어신호가 아닌 동일한 신호를 주파수만을 달리하여 페어신호로 생성하여 전송할 경우에도 수신단에서 두 신호를 비교하여 신뢰성을 검증할 수도 있지만, 이 경우 노이즈(Noise)에 의한 간섭이 발생하면 도 6에 도시한 바와 같이한쌍의 신호가 모두 묻혀버려 데이터 수신에 대한 신뢰성에 심각한 문제를 야기할 수 있기에 이러한 경우를 대비하여 본 발명에서는 페어인 두 신호 중 하나의 데이터값을 역전시켜 한쌍의 차동 페어신호로 생성하는 것이다.In the present invention, a differential pair signal refers to a signal composed of data having a pair of inverted signal values, and even when the signal is generated and transmitted as a pair signal by transmitting only the same signal that is not the differential pair signal at a different frequency, the receiver compares the two signals for reliability. In this case, if the interference caused by noise occurs in this case, a pair of signals are buried as shown in FIG. 6, which may cause a serious problem in reliability of data reception. In the present invention, the data value of one of two signals, which are pairs, is reversed to generate a pair of differential pair signals.
이를 위해 본 발명에 따른 초음파 스피커를 이용한 정보제공시스템은 도 4에 도시한 바와 같은 인코더(120)가 요구되어진다.To this end, in the information providing system using the ultrasonic speaker according to the present invention, the encoder 120 as shown in FIG. 4 is required.
본 발명에 따른 인코더(120)는 차동신호생성모듈(121)과 차동신호처리모듈(122)을 포함한다.The encoder 120 according to the present invention includes a differential signal generation module 121 and a differential signal processing module 122.
차동신호생성모듈(121)은 가청주파수 대역의 신호를 18~20kHz의 주파수를 다양한 방법으로 분할하여 차동 페어(pair) 신호를 생성하고, 차동신호처리모듈(122)은 차동신호생성모듈(121)에서 생성된 디지털 신호를 18~20kHz의 신호로 변환하고 발생시킨다. 주파수 분할의 예로는 하기 표 1에서와 같이 18~20kHz의 신호를 20개의 채널로 분할하고, 채널 1~채널 10 중 선택된 제1채널과, 채널 11~ 채널 20 중 선택된 제2채널을 이용하여 상호 역전된 차동 페어(pair) 신호를 생성한다.The differential signal generation module 121 generates a differential pair signal by dividing a signal of an audible frequency band by a frequency of 18 to 20 kHz in various ways, and the differential signal processing module 122 is a differential signal generation module 121. Convert the digital signal generated by the signal to 18 ~ 20kHz and generate it. As an example of frequency division, a signal of 18-20 kHz is divided into 20 channels, as shown in Table 1 below, and a first channel selected from channels 1 to 10 and a second channel selected from channels 11 to 20 are mutually divided. Generate an inverted differential pair signal.
표 1
채널 주파수
채널 1 18,050 Hz
채널 2 18,150 Hz
채널 3 18,250 Hz
채널 4 18,350 Hz
채널 5 18,450 Hz
채널 6 18,550 Hz
채널 7 18,650 Hz
채널 8 18,750 Hz
채널 9 18,850 Hz
채널 10 18,950 Hz
채널 11 19,050 Hz
채널 12 19,150 Hz
채널 13 19,250 Hz
채널 14 19,350 Hz
채널 15 19,450 Hz
채널 16 19,550 Hz
채널 17 19,650 Hz
채널 18 19,750 Hz
채널 19 19,850 Hz
채널 20 19,950 Hz
Table 1
channel frequency
Channel
1 18,050 Hz
Channel 2 18,150 Hz
Channel 3 18,250 Hz
Channel 4 18,350 Hz
Channel 5 18,450 Hz
Channel 6 18,550 Hz
Channel 7 18,650 Hz
Channel 8 18,750 Hz
Channel 9 18,850 Hz
Channel 10 18,950 Hz
Channel 11 19,050 Hz
Channel 12 19,150 Hz
Channel 13 19,250 Hz
Channel 14 19,350 Hz
Channel 15 19,450 Hz
Channel 16 19,550 Hz
Channel 17 19,650 Hz
Channel 18 19,750 Hz
Channel 19 19,850 Hz
Channel 20 19,950 Hz
보다 구체적인 예를 들면, 제1채널로 채널 5의 18,450Hz의 주파수와 제2채널로 채널 15의 19,450Hz의 주파수를 이용하여 차동 페어(pair) 신호를 생성할 수 있으며, 예로 채널 5의 18,450Hz의 주파수를 이용하여 10110000인 데이터를 신호로 전송 시 아래 표 2와 같은 차동 페어신호를 생성할 수 있다.More specifically, a differential pair signal may be generated using a frequency of 18,450 Hz of channel 5 as the first channel and 19,450 Hz of channel 15 as the second channel. For example, 18,450 Hz of channel 5 may be generated. When the data of 10110000 is transmitted as a signal using the frequency of, a differential pair signal as shown in Table 2 can be generated.
표 2
제 1채널 제 2채널
1 0
0 1
1 0
1 0
0 1
0 1
0 1
0 1
TABLE 2
First channel 2nd channel
One 0
0 One
One 0
One 0
0 One
0 One
0 One
0 One
상기와 같이, 차동 페어신호를 생성하여 전송할 경우 노이즈(Noise)에 의한 간섭에도 불구하고 적어도 하나의 신호는 정상적으로 수신이 가능하게 되어 안정적으로 신호전송 및 수신을 가능하게 한다.As described above, when generating and transmitting a differential pair signal, at least one signal can be normally received in spite of interference caused by noise, thereby stably transmitting and receiving signals.
상기 제1채널 및 제2채널에 해당하는 각 데이터들은 수신부(디코더)에서 패킷의 경계를 추출할 수 있도록 하는 SYNC 신호 및 데이터 본체인 셀 고유 식별자(Cell ID 또는 CID), 및 디코더에서 수신한 패킷의 오류를 검출하는데 사용되는 체크섬(checksum)을 두어 안정적인 데이터 수신을 담보하고 데이터 수신시 에러를 검출할 수 있도록 한다.Each of the data corresponding to the first channel and the second channel is a SYNC signal and a cell unique identifier (Cell ID or CID) that enables the receiver to extract a packet boundary, and a packet received by the decoder. A checksum is used to detect errors in the system to ensure stable data reception and to detect errors in data reception.
상기와 같이 변환된 신호는 제1증폭기(11)를 통해 증폭되어 제1스피커(10)(제1실시예의 경우)를 통해 송출되어 근거리에 위치한 수신 단말기(300)에 전달되거나, 송출신호생성부(110)에서 신호변조 처리되어 제2스피커(20)를 통해 송출되어 원거리에 위치한 수신 단말기(300)에 전달되도록 할 수 있다.The signal converted as described above is amplified by the first amplifier 11 and transmitted through the first speaker 10 (in the case of the first embodiment) to be delivered to a receiving terminal 300 located at a short distance, or a transmission signal generator The signal modulation process at 110 may be transmitted through the second speaker 20 to be transmitted to the receiving terminal 300 located at a far distance.
이때, 각 수신 단말기(300)에서는 상기 각각의 신호를 수신한 후, 차동 페어(pair) 신호를 분석하여 동일성이 인정되면, 이를 내장된 증폭기(312) 및 스피커(313)를 통해 외부로 음성송출하게 된다. 이를 위해 수신 단말기(300)에서 비교기(미도시)를 이용하여 예를 들어, 두 데이터 신호를 곱하거나(정상신호 0000000000), 더하여 얻어지는 값(정상신호 1111111111)을 이용하여 정상수신여부를 확인할 수 있다. At this time, each receiving terminal 300 receives the respective signals, analyzes the differential pair signal, and if the identity is recognized, it is transmitted to the outside through the built-in amplifier 312 and the speaker 313 Done. To this end, the receiving terminal 300 may check whether the reception is normal by using a comparator (not shown), for example, by multiplying two data signals (normal signal 0000000000) or by using a value obtained by adding a normal signal (normal signal 1111111111). .
상기와 같은 구성에 의하면 근거리 내지 원거리에 위치한 어떠한 수신 단말기에도 정보의 전달에 있어서 주위 환경에 의한 신호의 왜곡이나 간섭을 받지 않고 정확성과 신뢰성을 확보하는 것이 가능하다. 따라서, 신호가 현재 수신 단말기가 위치 정보를 포함할 경우, 수신 단말기 소유자는 현재 자신이 어디에 위치하고 있는지 실시간 위치 정보를 단말기에 내장된 스피커(313)를 통해 정확하게 확인할 수 있는 시스템의 구축이 가능해진다. According to the above configuration, it is possible to secure accuracy and reliability without any distortion or interference of the signal caused by the surrounding environment in the transmission of information to any receiving terminal located at near or far distance. Therefore, when the signal includes the location information of the current receiving terminal, the owner of the receiving terminal can establish a system that can accurately check the real-time location information through the speaker 313 built in the terminal.
도 5는 본 발명에 따른 초음파 스피커를 이용한 정보송수신시스템을 나타낸 것으로, 도시한 바와 같이, 상기 초음파 스피커를 이용한 정보제공시스템(500)에서 전송되는 신호가 단순한 위치정보와 매칭되어지는 물리주소에 관한 정보만을 포함한 경우, 수신 단말기(300)는 이를 수신하여 정보제공서버(400)에 접속하여 데이터 신호를 전송하고, 정보제공서버(400)는 이러한 데이터 신호를 수신하여 해당 물리주소에 저장된 실제 주소 데이터를 추출한 후, 이를 수신 단말기에 전송하여, 상기 수신 단말기(300)가 이를 수신하게 하여 실제 주소를 음성으로 내장된 스피커(313)를 통해 송출하도록 하는 것도 본 발명의 실시예를 구성한다.5 illustrates an information transmission and reception system using an ultrasonic speaker according to the present invention. As shown in FIG. 5, a signal transmitted from the information providing system 500 using the ultrasonic speaker is related to a physical address to which simple location information is matched. When only the information is included, the receiving terminal 300 receives the data and accesses the information providing server 400 to transmit a data signal, and the information providing server 400 receives the data signal and stores the actual address data stored in the corresponding physical address. After extracting and transmitting it to the receiving terminal, the receiving terminal 300 to receive it to transmit the actual address through the speaker 313 built in voice also constitutes an embodiment of the present invention.
이상과 같이, 본 명세서에 첨부된 블록도의 각 블록과 흐름도의 각 단계의 조합들은 프로그램 인스트럭션들에 의해 수행될 수도 있다. 이들 프로그램 인스트럭션들은 범용 디지털 단말기, 기타 프로그램 가능한 데이터 프로세싱 장비의 프로세서에 탑재될 수 있으므로, 이들 프로세서를 통해 수행되는 그 인스트럭션들이 블록도의 각 블록 또는 흐름도의 각 단계에서 설명된 기능들을 수행하는 수단을 생성하게 된다. 이들 프로그램 인스트럭션들은 특정 방식으로 기능을 구현하기 위해 컴퓨터 또는 기타 프로그램 가능한 데이터 프로세싱 장비를 지향할 수 있는 디지털 단말기 이용 가능 또는 디지털 단말기 판독 가능 메모리에 저장되는 것도 가능하므로, 그 디지털 단말기 이용가능 또는 디지털 단말기 판독 가능 메모리에 저장된 인스트럭션들은 블록도의 각 블록 또는 흐름도 각 단계에서 설명된 기능을 수행하는 인스트럭션 수단을 내포하는 제조 품목을 생산하는 것도 가능하다. 프로그램 인스트럭션들은 디지털 단말기 또는 기타 프로그램 가능한 데이터 프로세싱 장비 상에 탑재되는 것도 가능하므로, 디지털 단말기 또는 기타 프로그램 가능한 데이터 프로세싱 장비 상에서 일련의 동작 단계들이 수행되어 디지털 단말기로 실행되는 프로세스를 생성해서 디지털 단말기 또는 기타 프로그램 가능한 데이터 프로세싱 장비를 수행하는 인스트럭션들은 블록도의 각 블록 및 흐름도의 각 단계에서 설명된 기능들을 실행하기 위한 단계들을 제공하는 것도 가능하다. As described above, the combination of each block of the block diagram and each step of the flowchart attached to the present specification may be performed by program instructions. Since these program instructions may be mounted on a processor of a general-purpose digital terminal or other programmable data processing equipment, the instructions executed by these processors may provide a means for performing the functions described in each block of the block diagram or in each step of the flowchart. Will be created. These program instructions may be stored in a digital terminal usable or digital terminal readable memory that may be directed to a computer or other programmable data processing equipment to implement functionality in a particular manner, so that the digital terminal available or digital terminal Instructions stored in the readable memory may also produce an article of manufacture containing instruction means for performing the functions described in each block of the block diagram or in each step of the flowchart. Program instructions may also be mounted on a digital terminal or other programmable data processing equipment, such that a series of operating steps are performed on the digital terminal or other programmable data processing equipment to create a process that is executed by the digital terminal, thereby creating a digital terminal or other. Instructions implementing the programmable data processing equipment may also provide steps for performing the functions described in each block of the block diagram and in each step of the flowchart.
또한, 각 블록 또는 각 단계는 특정된 논리적 기능(들)을 실행하기 위한 하나 이상의 실행 가능한 인스트럭션들을 포함하는 모듈, 세그먼트 또는 코드의 일부를 나타낼 수 있다. 또, 몇 가지 대체 실시예들에서는 블록들 또는 단계들에서 언급된 기능들이 순서를 벗어나서 발생하는 것도 가능함을 주목해야 한다. 예컨대, 잇달아 도시되어 있는 두 개의 블록들 또는 단계들은 사실 실질적으로 동시에 수행되는 것도 가능하고 또는 그 블록들 또는 단계들이 때때로 해당하는 기능에 따라 역순으로 수행되는 것도 가능하다.In addition, each block or step may represent a portion of a module, segment or code that includes one or more executable instructions for executing a specified logical function (s). It should also be noted that in some alternative embodiments, the functions noted in the blocks or steps may occur out of order. For example, the two blocks or steps shown in succession may in fact be executed substantially concurrently or the blocks or steps may sometimes be performed in the reverse order, depending on the functionality involved.
이상의 설명은 본 발명의 기술 사상을 예시적으로 설명한 것에 불과한 것으로서, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면 본 발명의 본질적인 특성에서 벗어나지 않는 범위에서 다양한 수정 및 변형이 가능할 것이다. 따라서, 본 발명에 개시된 실시예들은 본 발명의 기술 사상을 한정하기 위한 것이 아니라 설명하기 위한 것이고, 이러한 실시예에 의하여 본 발명의 기술 사상의 범위가 한정되는 것은 아니다. 본 발명의 보호 범위는 아래의 청구범위에 의하여 해석되어야 하며, 그와 동등한 범위 내에 있는 모든 기술사상은 본 발명의 권리범위에 포함되는 것으로 해석되어야 할 것이다.The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas falling within the scope of the present invention should be construed as being included in the scope of the present invention.
[부호의 설명][Description of the code]
10: 제1스피커10: first speaker
20: 제2스피커20: second speaker
100: 스피커부100: speaker unit
110: 송출신호생성부110: transmission signal generation unit
120: 인코더120: encoder
300: 수신 단말기300: receiving terminal
310: 마이크로폰310: microphone
311: 신호추출부311: signal extraction unit
400: 정보제공서버400: information providing server

Claims (5)

  1. 가청주파수 대역의 신호를 초음파 대역의 반송파로 변조하여 초음파 스피커를 통해 수신 단말기에 정보를 제공하는 초음파 스피커를 이용한 정보제공시스템에 있어서,An information providing system using an ultrasonic speaker for modulating a signal of an audio frequency band into a carrier of an ultrasonic band and providing information to a receiving terminal through an ultrasonic speaker,
    가청주파수 대역의 신호 주파수를 분할하여 차동 페어(pair) 신호를 생성하는 차동신호생성모듈과, 차동신호생성모듈에서 생성된 디지털 신호를 아날로그 신호로 변환하고 발생시키는 신호처리모듈을 포함하는 인코더를 포함하는 것을 특징으로 하는 차동신호를 송신하는 초음파 스피커를 이용한 정보제공시스템.And an encoder including a differential signal generation module for generating a differential pair signal by dividing a signal frequency in an audible frequency band, and a signal processing module for converting and generating a digital signal generated by the differential signal generation module into an analog signal. Information providing system using an ultrasonic speaker for transmitting a differential signal, characterized in that.
  2. 제 1항에 있어서,The method of claim 1,
    가청주파수 대역의 스피커와 초음파 대역의 지향성스피커로 이루어진 스피커부; 및 상기 스피커부로 전달되고, 가청주파수 대역의 신호와 초음파 대역의 반송파를 융합하여 신호를 생성하는 송출신호생성부를 포함하는 차동신호를 송신하는 초음파 스피커를 이용한 정보제공시스템.A speaker unit including a speaker in an audible frequency band and a directional speaker in an ultrasonic band; And an output signal generation unit which is transmitted to the speaker unit and includes a transmission signal generation unit configured to generate a signal by fusing a signal of an audio frequency band and a carrier wave of an ultrasonic band.
  3. 제 1항에 있어서,The method of claim 1,
    가청주파수 영역의 신호는 18~20kHz 대역의 주파수를 18,050~18,950Hz의 주파수 대역 중 선택된 제1채널과, 19,050~19.950Hz의 주파수 대역 중 선택된 제2채널로 분할하여 상호 역전된 비트로 이루어진 차동 페어 신호로 전송되어지는 것을 특징으로 하는 차동신호를 송신하는 초음파 스피커를 이용한 정보제공시스템.The audible frequency signal is a differential pair signal consisting of bits inverted by dividing a frequency in an 18-20 kHz band into a first channel selected from a frequency band of 18,050 to 18,950 Hz and a second channel selected from a frequency band of 19,050 to 19.950 Hz. Information providing system using an ultrasonic speaker for transmitting a differential signal, characterized in that being transmitted to.
  4. 제 1항 내지 제 3항 중 선택된 한 항에 의한 정보제공시스템; 및An information providing system according to one of claims 1 to 3; And
    변조된 신호를 수신하는 마이크로폰과, 상기 신호로부터 가청주파수 대역의 신호를 추출하는 신호추출부와, 상기 추출된 가청주파수 대역의 신호를 증폭하는 신호증폭부, 및 상기 증폭된 신호를 외부로 송출하는 스피커부를 포함하는 수신 단말기;A microphone for receiving a modulated signal, a signal extracting unit for extracting an audio frequency band signal from the signal, a signal amplifier for amplifying the extracted audio frequency band signal, and transmitting the amplified signal to the outside A receiving terminal including a speaker unit;
    를 포함하는 차동신호를 송신하는 초음파 스피커를 이용한 정보송수신시스템.Information transmission and reception system using an ultrasonic speaker for transmitting a differential signal comprising a.
  5. 제 4항에 있어서,The method of claim 4, wherein
    상기 수신 단말기로부터 물리주소를 포함한 데이터 신호를 수신하고, 상기 물리주소에 저장된 실제 주소 데이터를 추출하여 상기 수신 단말기에 전송하여 음성으로 송출하도록 하는 위치정보제공서버를 더 포함하는 차동신호를 송신하는 초음파 스피커를 이용한 정보송수신시스템.Ultrasonic wave transmitting a differential signal further comprising a location information providing server for receiving a data signal including a physical address from the receiving terminal, extracts the actual address data stored in the physical address and transmits to the receiving terminal to transmit the voice signal Information transmission and reception system using a speaker.
PCT/KR2016/004837 2015-05-28 2016-05-09 Information providing system using ultrasonic speaker transmitting differential signal WO2016190567A1 (en)

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