WO2017222222A1 - Method and system for providing wireless stereo headset, and non-transitory computer-readable recording medium - Google Patents

Method and system for providing wireless stereo headset, and non-transitory computer-readable recording medium Download PDF

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Publication number
WO2017222222A1
WO2017222222A1 PCT/KR2017/006092 KR2017006092W WO2017222222A1 WO 2017222222 A1 WO2017222222 A1 WO 2017222222A1 KR 2017006092 W KR2017006092 W KR 2017006092W WO 2017222222 A1 WO2017222222 A1 WO 2017222222A1
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WO
WIPO (PCT)
Prior art keywords
transceiver
nfmi
headset
sound source
source signal
Prior art date
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PCT/KR2017/006092
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French (fr)
Korean (ko)
Inventor
변우영
변우성
Original Assignee
에잇비트 주식회사
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Publication of WO2017222222A1 publication Critical patent/WO2017222222A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output
    • G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/07—Applications of wireless loudspeakers or wireless microphones

Definitions

  • the present invention relates to a method, system and non-transitory computer readable recording medium for providing a wireless stereo headset.
  • Bluetooth more specifically, Bluetooth Classic Audio, A2DP protocol, or Bluetooth
  • BACKGROUND Wireless headsets that receive and reproduce sound source signals wirelessly through RF (Radio Frequency) communication channels such as Low Energy Audio are widely used.
  • RF Radio Frequency
  • a full-featured wireless stereo headset has also been introduced that performs signal transmission between the headset unit mounted on the left ear and the headset unit mounted on the right ear through a wireless communication channel.
  • a technique for implementing a wireless connection between a left headset unit and a right headset unit using a short-range Radio Frequency (RF) communication channel such as Bluetooth True Wireless Stereo (TWS).
  • RF Radio Frequency
  • the present inventor performs communication between left and right headset units by using near field magnetic induction (NFMI) technology, and inconsistencies due to timing differences that may occur between audio data reproduced in each of the left and right headset units.
  • NFMI near field magnetic induction
  • the object of the present invention is to solve all the above-mentioned problems.
  • the first RF transceiver for receiving a sound source signal from an external system through an RF (Radio Frequency) communication channel, a second headset for receiving the received sound source signal through a NFMI (Near Field Magnetic Induction) communication channel
  • a first NFMI transceiver for transmitting to the unit, a first signal processor for generating first audio data by performing predetermined signal processing on the received sound source signal, and a first for reproducing the first audio data generated above;
  • a first headset unit including a first speaker unit, a second NFMI transceiver unit for receiving a sound source signal transmitted from the first headset unit via an NFMI communication channel, and a signal preset for a sound source signal received by the second NFMI transceiver unit
  • a second signal processor for generating second audio data by performing processing, and a second speech for reproducing the above generated second audio data
  • a second headset unit including a kebu portion, and referring to the time taken for the sound source signal transmitted from the first headset unit to be received by the second headset unit
  • the NFMI communication channel can be used to improve the efficiency and quality of sound source signal transmission, while preventing inconsistencies due to timing differences between audio data played in each of the left and right headset units. Another purpose is to provide a wireless stereo headset.
  • a system for providing a wireless stereo headset for receiving a sound source signal from an external system via a radio frequency (RF) communication channel, the received sound source signal
  • a first NFMI transceiver for transmitting through a NFMI communication channel
  • a first signal processor for generating first audio data by performing predetermined signal processing on the received sound source signal
  • a first headset unit including a first speaker unit for reproducing the generated first audio data
  • a second NFMI transceiver unit for receiving a sound source signal transmitted from the first headset unit via an NFMI communication channel
  • the second audio data is generated by performing predetermined signal processing on the sound source signal received by the transceiver.
  • a second headset unit including a second signal processor configured to generate a second audio data, and a second speaker unit configured to reproduce the generated second audio data, wherein a sound source signal transmitted from the first headset unit is transmitted through an NFMI communication channel.
  • a method for providing a wireless stereo headset the first headset unit receiving a sound source signal from an external system via a radio frequency (RF) communication channel, the first headset The unit transmits the received sound source signal through a Near Field Magnetic Induction (NFMI) communication channel, and performs a predetermined signal processing on the received sound source signal to perform playback on the first headset unit.
  • RF radio frequency
  • NFMI Near Field Magnetic Induction
  • the second headset unit receives a sound source signal transmitted from the first headset unit via an NFMI communication channel, The second headset unit by performing predetermined signal processing on the sound source signal received by the unit Generating second audio data to be reproduced, and reproducing the generated second audio data, wherein the first headset unit is configured to generate a sound source signal transmitted from the first headset unit through an NFMI communication channel.
  • non-transitory computer readable recording medium for recording another method, system, and computer program for executing the method for implementing the present invention.
  • the effect of improving the power efficiency in the near field is achieved as compared with the prior art using the RF communication channel.
  • the effect of reducing the extent to which the transmission signal affects the human body or is attenuated by the human body as compared with the prior art using the RF communication channel is achieved.
  • the effect of allowing the bandwidth to be utilized with ease as compared to the prior art using the RF communication channel that must strictly adhere to a predetermined bandwidth is achieved.
  • the strength of the NFMI signal decreases drastically, so that the interference between the plurality of NFMI signals generated in each of the plurality of wireless stereo headsets can be significantly reduced.
  • the effect of increasing the security by preventing the generated NFMI signal from spreading far is achieved.
  • the effect that the timing of the audio data played back in each of the left and right headset units can be synchronized is achieved. do.
  • FIG. 1 is a diagram schematically showing an external configuration of a wireless stereo headset system according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an internal configuration of a wireless stereo headset system according to an embodiment of the present invention.
  • FIG. 3 is a diagram exemplarily illustrating an internal configuration of an NFMI transceiver according to an embodiment of the present invention.
  • FIG. 4 is a diagram illustrating an internal configuration for timing synchronization of a wireless stereo headset system according to an embodiment of the present invention.
  • FIG. 5 is a diagram conceptually illustrating a result of timing synchronization between audio data reproduced between each of a first headset unit and a second headset unit according to an embodiment of the present invention.
  • 110A, 120A RF Transceiver of External System
  • 210A first RF transceiver
  • FIG. 1 is a diagram schematically showing an external configuration of a wireless stereo headset system according to an embodiment of the present invention.
  • a wireless stereo headset system 200 may include a first headset unit 200A and a second headset unit which may be worn on the left and right ears of the user 10, respectively. 200B).
  • each of the first headset unit 200A and the second headset unit 200B may be connected to each other only through a wireless communication channel or may be connected to an external system 100. completely wireless).
  • the first headset unit 200A is configured to provide an external system 100 (eg, a smartphone) through an RF communication channel such as low power Bluetooth (BLE). And a sound source signal from a tablet, and the like, and transmit the received sound source signal to the second headset unit 200B through a near field magnetic induction (NFMI) communication channel. After applying a predetermined time delay to the audio data according to the sound source signal, the sound source signal may be reproduced by the speaker included in the first headset unit 200A.
  • an external system 100 eg, a smartphone
  • BLE low power Bluetooth
  • NFMI near field magnetic induction
  • the second headset unit 200B may receive a sound source signal transmitted from the first headset unit 200A, and may receive the above sound source signal.
  • the audio data may be reproduced in the speaker included in the second headset unit 200B.
  • the first headset unit 200A and the second headset unit 200B included in the wireless stereo headset system 200 are master headsets according to the relative relationship therebetween. It can be either a unit or a slave headset unit.
  • the headset unit that directly receives the sound source signal from the external system 100 may be a master headset unit, and indirectly receives the sound source signal from another headset unit.
  • the headset unit may be a slave headset unit.
  • FIG. 2 is a diagram illustrating an internal configuration of a wireless stereo headset system according to an embodiment of the present invention.
  • the wireless stereo headset system 200 includes a first headset unit 200A and a second headset unit 200B, which may be worn on the left and right ears of the user, respectively. It may include.
  • the first headset unit 200A and the second headset unit 200B are each a radio frequency (RF) transceiver 210A, 210B, NFMI transceiver 220A, 220B, respectively.
  • RF radio frequency
  • the RF transceiver 210A, 210B, the NFMI transceiver 220A, 220B, the signal processor 230A, 230B, and the speaker 240A, 240B are at least some of which are external systems.
  • Such program modules may be included in the wireless stereo headset system 200 in the form of operating systems, application modules, and other program modules, and may be physically stored on various known storage devices.
  • program modules may be stored in a remote storage device capable of communicating with the wireless stereo headset system 200.
  • program modules include, but are not limited to, routines, subroutines, programs, objects, components, data structures, etc. that perform particular tasks or execute particular abstract data types, described below, in accordance with the present invention.
  • the wireless stereo headset system 200 Although described above with respect to the wireless stereo headset system 200, this description is exemplary, and at least some of the components or functions of the wireless stereo headset system 200 are realized within the external system 100 as needed. It will be apparent to those skilled in the art that the present invention may be incorporated into the external system 100.
  • the first RF transceiver 210A included in the first headset unit 200A is connected to the external system 100 (more specifically, through the RF communication channel 21). It may perform a function of receiving a sound source signal from the RF transceiver (110A, 110B) included in the external system (100A, 100B).
  • the RF communication channel used to receive a sound source signal from the external system 100 may include a Bluetooth Low Energy (BLE) communication channel.
  • BLE Bluetooth Low Energy
  • the RF communication technology that can be used in the present invention is not necessarily limited to low power Bluetooth, and any other RF communication technology (for example, Wi-Fi) within the scope of achieving the object of the present invention. , Wi-Fi Direct, LTE, etc.) can be used.
  • the sound source signal from the external system 100 is received by the first RF transceiver 210A through the RF communication channel or the first RF transceiver 210A is connected to the external system (
  • the first RF transceiver 210A is controlled.
  • a predetermined control signal may be transmitted to the first NFMI transceiver 220A through a control line 23, and according to the control signal, the first NFMI transceiver 220A may transmit a second NFMI transceiver 220B. Can serve as a transmitter for transmitting a sound source signal.
  • the sound source signal from the external system 100 is received by the first RF transceiver 210A through the RF communication channel or the first RF transceiver 210A is connected to the external system ( In case of connection (or Bluetooth pairing) with the RF transceiver 110 of the 100, the first RF transceiver 210A transmits the first NFMI transceiver 220A to the first NFMI transceiver 220A through the data line 24. 2 may transmit (or relay) a sound source signal to be transmitted to the headset unit 200B, and accordingly, the first NFMI transceiver 220A transmits the sound source signal to the second headset unit 200B. You can do it.
  • the sound source signal from the external system 100 is not received by the first RF transceiver 210A or the first RF transceiver 210A is transmitted through the RF communication channel.
  • the first RF transceiver 210A is connected to a control line.
  • a control signal may be transmitted to the first NFMI transceiver 220A through a control line 23.
  • the first NFMI transceiver 220A may transmit a second NFMI transceiver 220B. It may be able to serve as a receiver for receiving a sound source signal from the.
  • the first NFMI transceiver 220A included in the first headset unit 200A transmits the received sound source signal through the NFMI communication channel 22 to the second headset.
  • a function of transmitting to the unit 200B (more specifically, the second NFMI transceiver 220B included in the second headset unit 200B) may be performed.
  • the first NFMI transceiver 220A may include a second headset unit (eg, a stereo, 5.1 channel, etc.) signal included in a sound source signal. Only some sound source signals that need to be reproduced by 200B can be transmitted to the second headset unit 200B. For example, when the first headset unit 200A is worn on the user's left ear and the second headset unit 200B is worn on the user's right ear, the first NFMI transceiver 220A is connected from the external system 100. Of the received sound source signals, only some sound source signals to be reproduced with respect to the right ear of the user may be transmitted to the second headset unit 200B.
  • a second headset unit eg, a stereo, 5.1 channel, etc.
  • the first signal processor 230A included in the first headset unit 200A may perform predetermined signal processing such as encoding, decoding, and amplification on the received sound source signal.
  • the function of generating first audio data to be reproduced in the first speaker unit 240A may be performed by performing the operation.
  • the first speaker unit 240A included in the first headset unit 200A may perform a function of reproducing the generated first audio data.
  • the second NFMI transceiver 220B included in the second headset unit 200B may include a first headset unit (more specifically, a first headset) through an NFMI communication channel.
  • a function of receiving a sound source signal transmitted from the first NFMI transceiver 220A) included in the unit 200A may be performed.
  • the sound source signal from the external system 100 is not received by the second RF transceiver 210B through the RF communication channel or the second RF transceiver 210B is the external system.
  • the sound source signal is received by the second NFMI transceiver 220B without being connected (or Bluetooth pairing) with the RF transceiver 110 of 100 (ie, the second headset unit 200B is a slave headset unit).
  • the second RF transceiver 210B may transmit a predetermined control signal to the second NFMI transceiver 220B through a control line 25, and, according to the control signal,
  • the second NFMI transceiver 220B may serve as a receiver for receiving a sound source signal from the first NFMI transceiver 220A.
  • the second RF transceiver 210B is received by the second NFMI transceiver 220B.
  • the sound source signal may be transmitted (or relayed) to the second signal processor 230B through the data line 26.
  • the sound source signal from the external system 100 is received by the second RF transceiver 210B through the RF communication channel or the second RF transceiver 210B is external.
  • the second RF transceiver 210B is connected to the second NFMI transceiver 220B via a control line 25.
  • a predetermined control signal may be transmitted to the second NFMI transceiver 220B according to the control signal, and thus the second NFMI transceiver 220B may serve as a transmitter for transmitting a sound source signal to the first NFMI transceiver 220A. have.
  • the second signal processor 230B included in the second headset unit 200B may perform predetermined signal processing such as encoding, decoding, and amplification on the received sound source signal.
  • the second audio data to be reproduced in the second speaker unit 240B may be generated by performing the operation.
  • the second speaker unit 240B included in the second headset unit 200B may perform a function of reproducing the second audio data generated above.
  • FIG. 3 is a diagram illustrating an internal configuration of an NFMI transceiver according to an embodiment of the present invention.
  • the NFMI transceiver 220 (corresponding to both the first NFMI transceiver 220A and the second NFMI transceiver 220B) according to an embodiment of the present invention may include a magnetic induction transceiver antenna unit ( MI Transceiver Aerial (221), MI MAC Controller (222), Audio Sample Rate Converter (223), Audio Latency Controller (224), G. 722 / ADPCM encoding unit (G.722 / ADPCM Encoder) 225, I2S / PCM controller (I2S / PCM Controller) 226, audio digital signal processing unit (Audio DSP) 227, and system controller (System Controller) ( 228).
  • MI Transceiver Aerial MI Transceiver Aerial
  • MI MAC Controller 222
  • Audio Sample Rate Converter (223
  • Audio Latency Controller 224
  • G. 722 / ADPCM encoding unit G.722 / ADPCM Encoder
  • I2S / PCM controller I2S /
  • the RF transceiver 210 transmits a predetermined control signal to the NFMI transceiver 220 through the control line 31, thereby providing an NFMI transceiver.
  • the setting value of the internal component of 220 may be changed, or the role of the NFMI transceiver 220 (a role as a transmitter or a role as a receiver) may be changed.
  • the RF transceiver 210 according to an embodiment of the present invention transmits a sound source signal through a data line 32 and performs audio digital according to audio data values (I 2 S, PCM, etc.).
  • the sound source signal may be selectively input to the signal processor 227.
  • the sound source signal is received by the first RF transceiver 210A from the external system 100 via the RF communication channel or the first RF transceiver 210A is connected to the external system 100.
  • the RF transceiver 110 of () when the first headset unit 200A becomes the master headset unit the first RF transceiver 210A or the first signal
  • the processor 230A refers to the first headset unit (see the time taken for the sound source signal transmitted from the first headset unit 200A to be received by the second headset unit 200B through the NFMI communication channel).
  • a time delay to be applied to the first audio data to be reproduced may be determined.
  • FIG. 4 is a diagram illustrating an internal configuration for timing synchronization of a wireless stereo headset system according to an embodiment of the present invention.
  • FIG. 5 is a diagram conceptually illustrating a result of timing synchronization between audio data reproduced between each of a first headset unit and a second headset unit according to an embodiment of the present invention.
  • the first RF transceiver 210A or the first signal processor 230A includes a sound source signal from the first headset unit 200A to the second headset unit 200B through the NFMI communication channel.
  • the second headset due to the time 530 (ie, the time required for transmitting and receiving the sound source signal performed by the first NFMI transceiver 220A and the second NFMI transceiver 220B) for transmitting to the second headset.
  • the second audio data reproduced in the unit 200B may be reproduced later by a predetermined time (for example, several ms) compared with the first audio data reproduced in the first headset unit 200A.
  • the first time delay unit 211A included in the first RF transceiver 210A is received by the first RF transceiver 210A.
  • the sound source signal may be delayed for a predetermined time and then transferred to the first signal processor 230A, whereby the timing of the first audio data reproduced in the first headset unit 200A is reproduced in the second headset unit 200B. And the timing of the second audio data to be synchronized.
  • the first time delay unit 211A may determine the length 540 of the time delay to be applied to the first audio data based on the audio sampling rate. For example, when the audio sampling rate is 48 kHz, the length of time delay to be applied for the first audio data may be determined to be 3 ms.
  • time delay unit for performing a time delay function for timing synchronization between the first audio data and the second audio data has been mainly described for the embodiment included in the RF transceiver
  • the time delay unit according to the present invention The configuration is not necessarily limited to those listed above, and it is understood that the time delay unit may be included in other components such as an NFMI transceiver, a signal processor, and the like within the scope of achieving the object or effect of the present invention.
  • the first NFMI transceiver 220A and the second NFMI transceiver 220B may transmit a sound source signal using a frequency band of several GHz or may use a multiple input multiple output (MIMO). By transmitting the sound source signal in a manner, it is possible to increase the bandwidth of the NFMI communication channel.
  • MIMO multiple input multiple output
  • the wireless stereo headset system 200, the antenna included in the first NFMI transceiver 220A and the antenna included in the second NFMI transceiver 220B are on the same axis. By being coaxial or coplanar with each other, the NFMI communication distance can be increased.
  • the wireless stereo headset system 200 performs communication between the first headset unit 200A and the second headset unit 200B through an RF communication channel rather than an NFMI communication channel. can do.
  • the first headset unit 200A and the second headset unit 200B do not include the first NFMI transceiver 220A and the second NFMI transceiver 220B, respectively.
  • the first RF transceiver 210A included in the first headset unit 200A and the second RF transceiver 210B included in the second headset unit 200B are the first NFMI transceiver 220A and the second receiver, respectively. 2
  • the power or function of the NFMI transceiver 220B may be cut off.
  • the first RF transceiver 210A included in the first headset unit 200A may receive a sound source signal from the external system 100 through an RF communication channel. After transmitting the received sound source signal to the second RF transceiver 210B included in the second headset unit 200B through the RF communication channel, while delaying the received sound source signal for a predetermined time. The signal may be transferred to the first signal processor 230A.
  • the second RF transceiver 210B included in the second headset unit 200B may receive a sound source signal received from the first RF transceiver 210A through an RF communication channel. It may be received, and may transmit the received sound source signal to the second signal processor 230B.
  • the timing of the first audio data reproduced in the first headset unit 200A can be synchronized with the timing of the second audio data reproduced in the second headset unit 200B.
  • Embodiments according to the present invention described above may be implemented in the form of program instructions that may be executed by various computer components, and may be recorded on a non-transitory computer readable recording medium.
  • the non-transitory computer readable recording medium may include program instructions, data files, data structures, etc. alone or in combination.
  • the program instructions recorded on the non-transitory computer readable recording medium may be those specially designed and configured for the present invention, or may be known and available to those skilled in the computer software arts.
  • non-transitory computer readable recording media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs, DVDs, magnetic-optical media such as floppy disks ( magneto-optical media) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like.
  • program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.
  • the hardware device may be configured to operate as one or more software modules to perform the process according to the invention, and vice versa.

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Abstract

The present invention relates to a method and system for providing a wireless stereo headset, and a non-temporary computer-readable recording medium. An aspect of the present invention provides a system for providing a wireless stereo headset, the system comprising: a first headset unit including a first RF transmission/reception unit, a first NFMI transmission/reception unit, a first signal processing unit, and a first speaker unit; and a second headset unit including a second NFMI transmission/reception unit, a second signal processing unit, and a second speaker unit, wherein a time delay to be applied to first audio data is determined with reference to time required for receiving, by the second headset unit, a sound source signal having been transmitted from the first headset unit through an NFMI communication channel.

Description

무선 스테레오 헤드셋을 제공하기 위한 방법, 시스템 및 비일시성의 컴퓨터 판독 가능한 기록 매체Method, system and non-transitory computer readable recording medium for providing a wireless stereo headset
본 발명은 무선 스테레오 헤드셋을 제공하기 위한 방법, 시스템 및 비일시성의 컴퓨터 판독 가능한 기록 매체에 관한 것이다.The present invention relates to a method, system and non-transitory computer readable recording medium for providing a wireless stereo headset.
근래에 들어, 유선 케이블로 연결된 외부 시스템(예를 들면, 스마트폰, PC 등)으로부터 음원 신호를 수신하여 재생하던 전통적인 개념의 헤드셋에서 벗어나, 블루투스(보다 구체적으로, Bluetooth Classic Audio, A2DP 프로토콜 또는 Bluetooth Low Energy Audio)와 같은 RF(Radio Frequency) 통신 채널을 통하여 무선으로 음원 신호를 수신하여 재생하는 무선 헤드셋이 널리 보급되고 있다.In recent years, apart from traditional headsets that have received and played sound signals from external systems (e.g. smartphones, PCs, etc.) connected by wired cables, Bluetooth (more specifically, Bluetooth Classic Audio, A2DP protocol, or Bluetooth) BACKGROUND Wireless headsets that receive and reproduce sound source signals wirelessly through RF (Radio Frequency) communication channels such as Low Energy Audio are widely used.
최근에는, 왼쪽 귀에 장착되는 헤드셋 유닛과 오른쪽 귀에 장착되는 헤드셋 유닛 사이의 신호 전송까지 무선 통신 채널을 통해 수행하는 완전한 의미의 무선 스테레오 헤드셋도 소개되고 있다.Recently, a full-featured wireless stereo headset has also been introduced that performs signal transmission between the headset unit mounted on the left ear and the headset unit mounted on the right ear through a wireless communication channel.
이러한 종래 기술의 일 예로서, 블루투스 TWS(True Wireless Stereo)와 같은 근거리 RF(Radio Frequency) 통신 채널을 이용하여 왼쪽 헤드셋 유닛과 오른쪽 헤드셋 유닛 사이의 무선 연결을 구현하는 기술을 들 수 있다.As an example of such a prior art, a technique for implementing a wireless connection between a left headset unit and a right headset unit using a short-range Radio Frequency (RF) communication channel such as Bluetooth True Wireless Stereo (TWS).
하지만, RF 통신 채널을 이용하여 좌우 헤드셋 유닛 사이의 무선 연결을 구현하는 종래 기술에 따르면, 다른 RF 신호와의 간섭이 발생할 수 있고, 신호 전송 거리가 길고 전송 범위가 넓어 보안에 취약하고, 인체(즉, 사용자의 머리 부위)에 의한 신호 흡수로 인해 고른 신호 품질을 얻기 어렵다는 한계가 있다.However, according to the prior art, which implements a wireless connection between left and right headset units using an RF communication channel, interference with other RF signals may occur, and a long signal transmission distance and a wide transmission range are vulnerable to security. That is, there is a limit that it is difficult to obtain even signal quality due to signal absorption by the user's head).
이에, 본 발명자는, 근거리 자기 유도(NFMI; Near Field Magnetic Induction) 기술을 이용하여 좌우 헤드셋 유닛 사이의 통신을 수행하고, 좌우 헤드셋 유닛 각각에서 재생되는 오디오 데이터 사이에서 발생할 수 있는 타이밍 차이로 인한 불일치를 해결할 수 있는 기술을 제안하는 바이다.Accordingly, the present inventor performs communication between left and right headset units by using near field magnetic induction (NFMI) technology, and inconsistencies due to timing differences that may occur between audio data reproduced in each of the left and right headset units. We propose a technique to solve the problem.
본 발명은 상술한 문제점을 모두 해결하는 것을 그 목적으로 한다.The object of the present invention is to solve all the above-mentioned problems.
또한, 본 발명은, RF(Radio Frequency) 통신 채널을 통하여 외부 시스템으로부터 음원 신호를 수신하는 제1 RF 송수신부, 위의 수신되는 음원 신호를 NFMI(Near Field Magnetic Induction) 통신 채널을 통하여 제2 헤드셋 유닛에게 송신하는 제1 NFMI 송수신부, 위의 수신되는 음원 신호에 대하여 기설정된 신호 처리를 수행함으로써 제1 오디오 데이터를 생성하는 제1 신호 처리부, 및 위의 생성되는 제1 오디오 데이터를 재생하는 제1 스피커부를 포함하는 제1 헤드셋 유닛, 및 NFMI 통신 채널을 통하여 제1 헤드셋 유닛으로부터 송신되는 음원 신호를 수신하는 제2 NFMI 송수신부, 제2 NFMI 송수신부에 의하여 수신되는 음원 신호에 대하여 기설정된 신호 처리를 수행함으로써 제2 오디오 데이터를 생성하는 제2 신호 처리부, 및 위의 생성되는 제2 오디오 데이터를 재생하는 제2 스피커부를 포함하는 제2 헤드셋 유닛을 포함하고, NFMI 통신 채널을 통하여 제1 헤드셋 유닛으로부터 송신된 음원 신호가 제2 헤드셋 유닛에 의하여 수신되는 데에 소요되는 시간을 참조로 하여, 제1 오디오 데이터에 적용될 시간 지연(time delay)을 결정함으로써, NFMI 통신 채널을 이용하여 음원 신호 전송의 효율성과 품질을 높이면서도 좌우 헤드셋 유닛 각각에서 재생되는 오디오 데이터 사이에서 타이밍 차이로 인한 불일치가 발생하는 것을 방지할 수 있는 무선 스테레오 헤드셋을 제공하는 것을 다른 목적으로 한다.In addition, the present invention, the first RF transceiver for receiving a sound source signal from an external system through an RF (Radio Frequency) communication channel, a second headset for receiving the received sound source signal through a NFMI (Near Field Magnetic Induction) communication channel A first NFMI transceiver for transmitting to the unit, a first signal processor for generating first audio data by performing predetermined signal processing on the received sound source signal, and a first for reproducing the first audio data generated above; A first headset unit including a first speaker unit, a second NFMI transceiver unit for receiving a sound source signal transmitted from the first headset unit via an NFMI communication channel, and a signal preset for a sound source signal received by the second NFMI transceiver unit A second signal processor for generating second audio data by performing processing, and a second speech for reproducing the above generated second audio data A second headset unit including a kebu portion, and referring to the time taken for the sound source signal transmitted from the first headset unit to be received by the second headset unit via the NFMI communication channel, to the first audio data. By determining the time delay to be applied, the NFMI communication channel can be used to improve the efficiency and quality of sound source signal transmission, while preventing inconsistencies due to timing differences between audio data played in each of the left and right headset units. Another purpose is to provide a wireless stereo headset.
상기 목적을 달성하기 위한 본 발명의 대표적인 구성은 다음과 같다.Representative configuration of the present invention for achieving the above object is as follows.
본 발명의 일 태양에 따르면, 무선 스테레오 헤드셋(headset)을 제공하기 위한 시스템으로서, RF(Radio Frequency) 통신 채널을 통하여 외부 시스템으로부터 음원 신호를 수신하는 제1 RF 송수신부, 상기 수신되는 음원 신호를 NFMI(Near Field Magnetic Induction; 근거리 자기 유도) 통신 채널을 통하여 송신하는 제1 NFMI 송수신부, 상기 수신되는 음원 신호에 대하여 기설정된 신호 처리를 수행함으로써 제1 오디오 데이터를 생성하는 제1 신호 처리부, 및 상기 생성되는 제1 오디오 데이터를 재생하는 제1 스피커부를 포함하는 제1 헤드셋 유닛, 및 NFMI 통신 채널을 통하여 상기 제1 헤드셋 유닛으로부터 송신되는 음원 신호를 수신하는 제2 NFMI 송수신부, 상기 제2 NFMI 송수신부에 의하여 수신되는 음원 신호에 대하여 기설정된 신호 처리를 수행함으로써 제2 오디오 데이터를 생성하는 제2 신호 처리부, 및 상기 생성되는 제2 오디오 데이터를 재생하는 제2 스피커부를 포함하는 제2 헤드셋 유닛을 포함하고, NFMI 통신 채널을 통하여 상기 제1 헤드셋 유닛으로부터 송신된 음원 신호가 상기 제2 헤드셋 유닛에 의하여 수신되는 데에 소요되는 시간을 참조로 하여, 상기 제1 오디오 데이터에 적용될 시간 지연(time delay)을 결정하는 시스템이 제공된다.According to an aspect of the present invention, a system for providing a wireless stereo headset (headset), a first RF transceiver for receiving a sound source signal from an external system via a radio frequency (RF) communication channel, the received sound source signal A first NFMI transceiver for transmitting through a NFMI communication channel, a first signal processor for generating first audio data by performing predetermined signal processing on the received sound source signal, and A first headset unit including a first speaker unit for reproducing the generated first audio data, a second NFMI transceiver unit for receiving a sound source signal transmitted from the first headset unit via an NFMI communication channel, and the second NFMI The second audio data is generated by performing predetermined signal processing on the sound source signal received by the transceiver. And a second headset unit including a second signal processor configured to generate a second audio data, and a second speaker unit configured to reproduce the generated second audio data, wherein a sound source signal transmitted from the first headset unit is transmitted through an NFMI communication channel. With reference to the time taken to be received by the two headset units, a system is provided for determining a time delay to be applied to the first audio data.
본 발명의 다른 태양에 따르면, 무선 스테레오 헤드셋(headset)을 제공하기 위한 방법으로서, 제1 헤드셋 유닛이, RF(Radio Frequency) 통신 채널을 통하여 외부 시스템으로부터 음원 신호를 수신하는 단계, 상기 제1 헤드셋 유닛이, 상기 수신되는 음원 신호를 NFMI(Near Field Magnetic Induction; 근거리 자기 유도) 통신 채널을 통하여 송신하고, 상기 수신되는 음원 신호에 대하여 기설정된 신호 처리를 수행함으로써 상기 제1 헤드셋 유닛에서 재생될 제1 오디오 데이터를 생성하고, 상기 생성되는 제1 오디오 데이터를 재생하는 단계, 및 상기 제2 헤드셋 유닛이, NFMI 통신 채널을 통하여 상기 제1 헤드셋 유닛으로부터 송신되는 음원 신호를 수신하고, 상기 제2 헤드셋 유닛에 의하여 수신되는 음원 신호에 대하여 기설정된 신호 처리를 수행함으로써 상기 제2 헤드셋 유닛에서 재생될 제2 오디오 데이터를 생성하고, 상기 생성되는 제2 오디오 데이터를 재생하는 단계를 포함하고, 상기 제1 헤드셋 유닛은, NFMI 통신 채널을 통하여 상기 제1 헤드셋 유닛으로부터 송신된 음원 신호가 상기 제2 헤드셋 유닛에 의하여 수신되는 데에 소요되는 시간을 참조로 하여, 상기 제1 오디오 데이터에 적용될 시간 지연(time delay)을 결정하는 방법이 제공된다.According to another aspect of the present invention, there is provided a method for providing a wireless stereo headset, the first headset unit receiving a sound source signal from an external system via a radio frequency (RF) communication channel, the first headset The unit transmits the received sound source signal through a Near Field Magnetic Induction (NFMI) communication channel, and performs a predetermined signal processing on the received sound source signal to perform playback on the first headset unit. Generating first audio data, reproducing the generated first audio data, and the second headset unit receives a sound source signal transmitted from the first headset unit via an NFMI communication channel, The second headset unit by performing predetermined signal processing on the sound source signal received by the unit Generating second audio data to be reproduced, and reproducing the generated second audio data, wherein the first headset unit is configured to generate a sound source signal transmitted from the first headset unit through an NFMI communication channel. With reference to the time taken to be received by the second headset unit, a method of determining a time delay to be applied to the first audio data is provided.
이 외에도, 본 발명을 구현하기 위한 다른 방법, 시스템 및 상기 방법을 실행하기 위한 컴퓨터 프로그램을 기록하기 위한 비일시성의 컴퓨터 판독 가능한 기록 매체가 더 제공된다.In addition, there is further provided a non-transitory computer readable recording medium for recording another method, system, and computer program for executing the method for implementing the present invention.
본 발명에 의하면, RF 통신 채널을 이용하는 종래 기술에 비하여 근거리에서의 전력 효율이 향상되는 효과가 달성된다.According to the present invention, the effect of improving the power efficiency in the near field is achieved as compared with the prior art using the RF communication channel.
또한, 본 발명에 의하면, RF 통신 채널을 이용하는 종래 기술에 비하여 전송 신호가 인체에 영향을 미치거나 인체에 의해 감쇄되는 정도를 줄일 수 있게 되는 효과가 달성된다.In addition, according to the present invention, the effect of reducing the extent to which the transmission signal affects the human body or is attenuated by the human body as compared with the prior art using the RF communication channel is achieved.
또한, 본 발명에 의하면, 정해진 대역폭을 엄격하게 지켜야 하는 RF 통신 채널을 이용하는 종래 기술에 비하여 대역폭을 여유롭게 활용할 수 있게 되는 효과가 달성된다.In addition, according to the present invention, the effect of allowing the bandwidth to be utilized with ease as compared to the prior art using the RF communication channel that must strictly adhere to a predetermined bandwidth is achieved.
또한, 본 발명에 의하면, 거리가 증가함에 따라 NFMI 신호의 세기가 급격하게 작아지므로, 복수의 무선 스테레오 헤드셋 각각에서 생성되는 복수의 NFMI 신호 사이의 간섭을 획기적으로 줄일 수 있게 되고, 무선 스테레오 헤드셋에서 생성된 NFMI 신호가 먼 곳까지 퍼지는 것을 방지하여 보안성을 높일 수 있게 되는 효과가 달성된다.In addition, according to the present invention, as the distance increases, the strength of the NFMI signal decreases drastically, so that the interference between the plurality of NFMI signals generated in each of the plurality of wireless stereo headsets can be significantly reduced. The effect of increasing the security by preventing the generated NFMI signal from spreading far is achieved.
또한, 본 발명에 의하면, 좌우 헤드셋 유닛 중 어느 하나에서 재생되는 오디오 데이터에 대하여 소정의 시간 지연을 적용시킬 수 있으므로, 좌우 헤드셋 유닛 각각에서 재생되는 오디오 데이터의 타이밍이 동기화될 수 있게 되는 효과가 달성된다.Further, according to the present invention, since a predetermined time delay can be applied to audio data played back in either of the left and right headset units, the effect that the timing of the audio data played back in each of the left and right headset units can be synchronized is achieved. do.
도 1은 본 발명의 일 실시예에 따라 무선 스테레오 헤드셋 시스템의 외부 구성을 개략적으로 나타내는 도면이다.1 is a diagram schematically showing an external configuration of a wireless stereo headset system according to an embodiment of the present invention.
도 2는 본 발명의 일 실시예에 따른 무선 스테레오 헤드셋 시스템의 내부 구성을 예시적으로 나타내는 도면이다.2 is a diagram illustrating an internal configuration of a wireless stereo headset system according to an embodiment of the present invention.
도 3은 본 발명의 일 실시예에 따라 NFMI 송수신부의 내부 구성을 예시적으로 나타내는 도면이다.3 is a diagram exemplarily illustrating an internal configuration of an NFMI transceiver according to an embodiment of the present invention.
도 4는 본 발명의 일 실시예에 따라 무선 스테레오 헤드셋 시스템의 타이밍 동기화를 위한 내부 구성을 예시적으로 나타내는 도면이다.4 is a diagram illustrating an internal configuration for timing synchronization of a wireless stereo headset system according to an embodiment of the present invention.
도 5는 본 발명의 일 실시예에 따라 제1 헤드셋 유닛과 제2 헤드셋 유닛 사이 각각에서 재생되는 오디오 데이터 사이의 타이밍 동기화를 수행한 결과를 개념적으로 나타내는 도면이다.5 is a diagram conceptually illustrating a result of timing synchronization between audio data reproduced between each of a first headset unit and a second headset unit according to an embodiment of the present invention.
<부호의 설명><Description of the code>
110A, 120A: 외부 시스템의 RF 송수신부110A, 120A: RF Transceiver of External System
200: 무선 스테레오 헤드셋 시스템200: wireless stereo headset system
200A: 제1 헤드셋 유닛200A: first headset unit
210A: 제1 RF 송수신부210A: first RF transceiver
220A: 제1 NFMI 송수신부220A: first NFMI transceiver
230A: 제1 신호 처리부230A: first signal processor
240A: 제1 스피커부240A: first speaker unit
200B: 제2 헤드셋 유닛200B: second headset unit
210B: 제2 RF 송수신부210B: second RF transceiver
220B: 제2 NFMI 송수신부220B: second NFMI transceiver
230B: 제2 신호 처리부230B: second signal processor
240B: 제2 스피커부240B: second speaker unit
21: RF 통신 채널21: RF communication channel
22: NFMI 통신 채널22: NFMI communication channel
23, 25, 31: 제어 라인23, 25, 31: control line
24, 26, 32: 데이터 라인24, 26, 32: data line
후술하는 본 발명에 대한 상세한 설명은, 본 발명이 실시될 수 있는 특정 실시예를 예시로서 도시하는 첨부 도면을 참조한다. 이들 실시예는 당업자가 본 발명을 실시할 수 있기에 충분하도록 상세히 설명된다. 본 발명의 다양한 실시예는 서로 다르지만 상호 배타적일 필요는 없음이 이해되어야 한다. 예를 들어, 여기에 기재되어 있는 특정 형상, 구조 및 특성은 일 실시예에 관련하여 본 발명의 정신 및 범위를 벗어나지 않으면서 다른 실시예로 구현될 수 있다. 또한, 각각의 개시된 실시예 내의 개별 구성요소의 위치 또는 배치는 본 발명의 정신 및 범위를 벗어나지 않으면서 변경될 수 있음이 이해되어야 한다. 따라서, 후술하는 상세한 설명은 한정적인 의미로서 취하려는 것이 아니며, 본 발명의 범위는, 적절하게 설명된다면, 그 청구항들이 주장하는 것과 균등한 모든 범위와 더불어 첨부된 청구항에 의해서만 한정된다. 도면에서 유사한 참조부호는 여러 측면에 걸쳐서 동일하거나 유사한 기능을 지칭한다.DETAILED DESCRIPTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be embodied in other embodiments without departing from the spirit and scope of the invention with respect to one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.
이하에서는, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명을 용이하게 실시할 수 있도록 하기 위하여, 본 발명의 바람직한 실시예들에 관하여 첨부된 도면을 참조하여 상세히 설명하기로 한다.DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.
무선 스테레오 헤드셋 시스템의 구성Wireless Stereo Headset System Configuration
이하에서는, 본 발명의 구현을 위하여 중요한 기능을 수행하는 무선 스테레오 헤드셋 시스템(200)의 내부 구성 및 각 구성요소의 기능에 대하여 살펴보기로 한다.Hereinafter, the internal configuration of the wireless stereo headset system 200 performing important functions for the implementation of the present invention and the function of each component will be described.
도 1은 본 발명의 일 실시예에 따라 무선 스테레오 헤드셋 시스템의 외부 구성을 개략적으로 나타내는 도면이다.1 is a diagram schematically showing an external configuration of a wireless stereo headset system according to an embodiment of the present invention.
도 1을 참조하면, 본 발명의 일 실시예에 따른 무선 스테레오 헤드셋 시스템(200)은, 사용자(10)의 왼쪽 귀와 오른쪽 귀에 각각 착용될 수 있는 제1 헤드셋 유닛(200A) 및 제2 헤드셋 유닛(200B)을 포함할 수 있다. 여기서, 본 발명의 일 실시예에 따르면, 제1 헤드셋 유닛(200A) 및 제2 헤드셋 유닛(200B) 각각은, 무선 통신 채널을 통하여만 서로 연결되거나 외부 시스템(100)과 연결될 수 있는 완전 무선(completely wireless) 장치로서 구성될 수 있다.Referring to FIG. 1, a wireless stereo headset system 200 according to an embodiment of the present invention may include a first headset unit 200A and a second headset unit which may be worn on the left and right ears of the user 10, respectively. 200B). Here, according to an embodiment of the present invention, each of the first headset unit 200A and the second headset unit 200B may be connected to each other only through a wireless communication channel or may be connected to an external system 100. completely wireless).
구체적으로, 본 발명의 일 실시예에 따르면, 후술할 바와 같이, 제1 헤드셋 유닛(200A)은, 저전력 블루투스(BLE)와 같은 RF 통신 채널을 통하여 외부 시스템(100)(예를 들면, 스마트폰, 태블릿 등)으로부터 음원 신호를 수신할 수 있고, 위의 수신되는 음원 신호를 근거리 자기 유도(NFMI; Near Field Magnetic Induction) 통신 채널을 통하여 제2 헤드셋 유닛(200B)에게 송신하는 한편, 위의 수신되는 음원 신호에 따른 오디오 데이터에 대하여 소정의 시간 지연을 적용시킨 후에 해당 음원 신호를 제1 헤드셋 유닛(200A)에 포함된 스피커에서 재생할 수 있다.Specifically, according to an embodiment of the present invention, as will be described later, the first headset unit 200A is configured to provide an external system 100 (eg, a smartphone) through an RF communication channel such as low power Bluetooth (BLE). And a sound source signal from a tablet, and the like, and transmit the received sound source signal to the second headset unit 200B through a near field magnetic induction (NFMI) communication channel. After applying a predetermined time delay to the audio data according to the sound source signal, the sound source signal may be reproduced by the speaker included in the first headset unit 200A.
또한, 본 발명의 일 실시예에 따르면, 후술할 바와 같이, 제2 헤드셋 유닛(200B)은, 제1 헤드셋 유닛(200A)으로부터 송신되는 음원 신호를 수신할 수 있고, 위의 수신되는 음원 신호에 따른 오디오 데이터를 제2 헤드셋 유닛(200B)에 포함된 스피커에서 재생할 수 있다.In addition, according to an embodiment of the present invention, as will be described later, the second headset unit 200B may receive a sound source signal transmitted from the first headset unit 200A, and may receive the above sound source signal. The audio data may be reproduced in the speaker included in the second headset unit 200B.
한편, 본 발명의 일 실시예에 따르면, 무선 스테레오 헤드셋 시스템(200)에 포함되는 제1 헤드셋 유닛(200A) 및 제2 헤드셋 유닛(200B)은, 그들 사이의 상대적인 관계에 따라 마스터(master) 헤드셋 유닛 및 슬레이브(slave) 헤드셋 유닛 중 어느 하나가 될 수 있다. 구체적으로, 본 발명의 일 실시예에 따르면, 외부 시스템(100)으로부터 음원 신호를 직접적으로 수신하는 헤드셋 유닛은 마스터(master) 헤드셋 유닛이 될 수 있고, 다른 헤드셋 유닛으로부터 음원 신호를 간접적으로 수신하는 헤드셋 유닛은 슬레이브(slave) 헤드셋 유닛이 될 수 있다.On the other hand, according to an embodiment of the present invention, the first headset unit 200A and the second headset unit 200B included in the wireless stereo headset system 200 are master headsets according to the relative relationship therebetween. It can be either a unit or a slave headset unit. Specifically, according to an embodiment of the present invention, the headset unit that directly receives the sound source signal from the external system 100 may be a master headset unit, and indirectly receives the sound source signal from another headset unit. The headset unit may be a slave headset unit.
도 2는 본 발명의 일 실시예에 따른 무선 스테레오 헤드셋 시스템의 내부 구성을 예시적으로 나타내는 도면이다.2 is a diagram illustrating an internal configuration of a wireless stereo headset system according to an embodiment of the present invention.
도 2를 참조하면, 본 발명의 일 실시예에 따른 무선 스테레오 헤드셋 시스템(200)은, 사용자의 왼쪽 귀와 오른쪽 귀에 각각 착용될 수 있는 제1 헤드셋 유닛(200A) 및 제2 헤드셋 유닛(200B)을 포함할 수 있다. 또한, 본 발명의 일 실시예에 따르면, 제1 헤드셋 유닛(200A) 및 제2 헤드셋 유닛(200B)은 각각, RF(Radio Frequency) 송수신부(210A, 210B), NFMI 송수신부(220A, 220B), 신호 처리부(230A, 230B) 및 스피커부(240A, 240B)를 포함할 수 있다. 본 발명의 일 실시예에 따르면, RF 송수신부(210A, 210B), NFMI 송수신부(220A, 220B), 신호 처리부(230A, 230B) 및 스피커부(240A, 240B)는 그 중 적어도 일부가 외부 시스템(100) 또는 쌍이 되는 다른 헤드셋 유닛(200A, 200B)과 통신하는 프로그램 모듈들일 수 있다. 이러한 프로그램 모듈들은 운영 시스템, 응용 프로그램 모듈 및 기타 프로그램 모듈의 형태로 무선 스테레오 헤드셋 시스템(200)에 포함될 수 있으며, 물리적으로는 여러 가지 공지의 기억 장치 상에 저장될 수 있다. 또한, 이러한 프로그램 모듈들은 무선 스테레오 헤드셋 시스템(200)과 통신 가능한 원격 기억 장치에 저장될 수도 있다. 한편, 이러한 프로그램 모듈들은 본 발명에 따라 후술할 특정 업무를 수행하거나 특정 추상 데이터 유형을 실행하는 루틴, 서브루틴, 프로그램, 오브젝트, 컴포넌트, 데이터 구조 등을 포괄하지만, 이에 제한되지는 않는다.Referring to FIG. 2, the wireless stereo headset system 200 according to an embodiment of the present invention includes a first headset unit 200A and a second headset unit 200B, which may be worn on the left and right ears of the user, respectively. It may include. In addition, according to an embodiment of the present invention, the first headset unit 200A and the second headset unit 200B are each a radio frequency (RF) transceiver 210A, 210B, NFMI transceiver 220A, 220B, respectively. , Signal processing units 230A and 230B and speaker units 240A and 240B. According to an embodiment of the present invention, the RF transceiver 210A, 210B, the NFMI transceiver 220A, 220B, the signal processor 230A, 230B, and the speaker 240A, 240B are at least some of which are external systems. Program modules in communication with 100 or other paired headset units 200A, 200B. Such program modules may be included in the wireless stereo headset system 200 in the form of operating systems, application modules, and other program modules, and may be physically stored on various known storage devices. In addition, such program modules may be stored in a remote storage device capable of communicating with the wireless stereo headset system 200. On the other hand, such program modules include, but are not limited to, routines, subroutines, programs, objects, components, data structures, etc. that perform particular tasks or execute particular abstract data types, described below, in accordance with the present invention.
한편, 무선 스테레오 헤드셋 시스템(200)에 관하여 위와 같이 설명되었으나, 이러한 설명은 예시적인 것이고, 무선 스테레오 헤드셋 시스템(200)의 구성요소 또는 기능 중 적어도 일부가 필요에 따라 외부 시스템(100) 내에서 실현되거나 외부 시스템(100) 내에 포함될 수도 있음은 당업자에게 자명하다.Meanwhile, although described above with respect to the wireless stereo headset system 200, this description is exemplary, and at least some of the components or functions of the wireless stereo headset system 200 are realized within the external system 100 as needed. It will be apparent to those skilled in the art that the present invention may be incorporated into the external system 100.
먼저, 본 발명의 일 실시예에 따르면, 제1 헤드셋 유닛(200A)에 포함되는 제1 RF 송수신부(210A)는, RF 통신 채널(21)을 통하여 외부 시스템(100)(보다 구체적으로는, 외부 시스템(100A, 100B)에 포함되는 RF 송수신부(110A, 110B))으로부터 음원 신호를 수신하는 기능을 수행할 수 있다. 여기서, 본 발명의 일 실시예에 따르면, 외부 시스템(100)으로부터 음원 신호를 수신하는 데에 사용되는 RF 통신 채널에는, 저전력 블루투스(BLE; Bluetooth Low Energy) 통신 채널이 포함될 수 있다. 다만, 본 발명에서 사용될 수 있는 RF 통신 기술이 반드시 저전력 블루투스에 한정되는 것은 아니고, 본 발명의 목적을 달성할 수 있는 범위 내에서 얼마든지 다른 RF 통신 기술(예를 들면, 와이파이(Wi-Fi), 와이파이 다이렉트(Wi-Fi Direct), LTE 등)이 사용될 수 있음을 밝혀 둔다.First, according to one embodiment of the present invention, the first RF transceiver 210A included in the first headset unit 200A is connected to the external system 100 (more specifically, through the RF communication channel 21). It may perform a function of receiving a sound source signal from the RF transceiver (110A, 110B) included in the external system (100A, 100B). Here, according to an embodiment of the present invention, the RF communication channel used to receive a sound source signal from the external system 100 may include a Bluetooth Low Energy (BLE) communication channel. However, the RF communication technology that can be used in the present invention is not necessarily limited to low power Bluetooth, and any other RF communication technology (for example, Wi-Fi) within the scope of achieving the object of the present invention. , Wi-Fi Direct, LTE, etc.) can be used.
한편, 본 발명의 일 실시예에 따르면, RF 통신 채널을 통하여 외부 시스템(100)으로부터의 음원 신호가 제1 RF 송수신부(210A)에 의하여 수신되거나 제1 RF 송수신부(210A)가 외부 시스템(100)의 RF 송수신부(110)와 상호 연결(또는 블루투스 페어링)되는 경우에(즉, 제1 헤드셋 유닛(200A)이 마스터 헤드셋 유닛이 되는 경우에), 제1 RF 송수신부(210A)는 제어 라인(control line)(23)을 통하여 제1 NFMI 송수신부(220A)에게 소정의 제어 신호를 전달할 수 있으며, 이러한 제어 신호에 따라, 제1 NFMI 송수신부(220A)는 제2 NFMI 송수신부(220B)에게 음원 신호를 송신하는 송신기로서의 역할을 수행할 수 있게 된다. 또한, 본 발명의 일 실시예에 따르면, RF 통신 채널을 통하여 외부 시스템(100)으로부터의 음원 신호가 제1 RF 송수신부(210A)에 의하여 수신되거나 제1 RF 송수신부(210A)가 외부 시스템(100)의 RF 송수신부(110)와 연결(또는 블루투스 페어링)되는 경우에, 제1 RF 송수신부(210A)는 데이터 라인(data line)(24)을 통하여 제1 NFMI 송수신부(220A)에게 제2 헤드셋 유닛(200B)에 대하여 송신될 음원 신호를 전달(또는 릴레이(relay))할 수 있으며, 이에 따라, 제1 NFMI 송수신부(220A)는 해당 음원 신호를 제2 헤드셋 유닛(200B)에게 송신할 수 있게 된다.Meanwhile, according to an embodiment of the present invention, the sound source signal from the external system 100 is received by the first RF transceiver 210A through the RF communication channel or the first RF transceiver 210A is connected to the external system ( When interconnected (or Bluetooth paired) with the RF transceiver 110 of 100 (ie, when the first headset unit 200A becomes the master headset unit), the first RF transceiver 210A is controlled. A predetermined control signal may be transmitted to the first NFMI transceiver 220A through a control line 23, and according to the control signal, the first NFMI transceiver 220A may transmit a second NFMI transceiver 220B. Can serve as a transmitter for transmitting a sound source signal. Further, according to an embodiment of the present invention, the sound source signal from the external system 100 is received by the first RF transceiver 210A through the RF communication channel or the first RF transceiver 210A is connected to the external system ( In case of connection (or Bluetooth pairing) with the RF transceiver 110 of the 100, the first RF transceiver 210A transmits the first NFMI transceiver 220A to the first NFMI transceiver 220A through the data line 24. 2 may transmit (or relay) a sound source signal to be transmitted to the headset unit 200B, and accordingly, the first NFMI transceiver 220A transmits the sound source signal to the second headset unit 200B. You can do it.
하지만, 본 발명의 일 실시예에 따르면, 반대로, RF 통신 채널을 통하여 외부 시스템(100)으로부터의 음원 신호가 제1 RF 송수신부(210A)에 의하여 수신되지 않거나 제1 RF 송수신부(210A)가 외부 시스템(100)의 RF 송수신부(110)와 연결(또는 블루투스 페어링)되지 않고 제1 NFMI 송수신부(220A)에 의하여 음원 신호가 수신되는 경우에, 제1 RF 송수신부(210A)는 제어 라인(control line)(23)을 통하여 제1 NFMI 송수신부(220A)에게 소정의 제어 신호를 전달할 수 있으며, 이러한 제어 신호에 따라, 제1 NFMI 송수신부(220A)는 제2 NFMI 송수신부(220B)로부터 음원 신호를 수신하는 수신기로서의 역할을 수행할 수 있게 될 수도 있다.However, according to an embodiment of the present invention, on the contrary, the sound source signal from the external system 100 is not received by the first RF transceiver 210A or the first RF transceiver 210A is transmitted through the RF communication channel. When the sound source signal is received by the first NFMI transceiver 220A without being connected (or Bluetooth paired) with the RF transceiver 110 of the external system 100, the first RF transceiver 210A is connected to a control line. A control signal may be transmitted to the first NFMI transceiver 220A through a control line 23. In response to the control signal, the first NFMI transceiver 220A may transmit a second NFMI transceiver 220B. It may be able to serve as a receiver for receiving a sound source signal from the.
다음으로, 본 발명의 일 실시예에 따르면, 제1 헤드셋 유닛(200A)에 포함되는 제1 NFMI 송수신부(220A)는, 위의 수신되는 음원 신호를 NFMI 통신 채널(22)을 통하여 제2 헤드셋 유닛(200B)(보다 구체적으로는, 제2 헤드셋 유닛(200B)에 포함되는 제2 NFMI 송수신부(220B))에게 송신하는 기능을 수행할 수 있다.Next, according to an embodiment of the present invention, the first NFMI transceiver 220A included in the first headset unit 200A transmits the received sound source signal through the NFMI communication channel 22 to the second headset. A function of transmitting to the unit 200B (more specifically, the second NFMI transceiver 220B included in the second headset unit 200B) may be performed.
구체적으로, 본 발명의 일 실시예에 따르면, 제1 NFMI 송수신부(220A)는, 음원 신호에 포함되어 있는 다중(예를 들면, 스테레오(stereo), 5.1 채널 등) 신호 중 제2 헤드셋 유닛(200B)에 의하여 재생될 필요가 있는 일부 음원 신호만을 제2 헤드셋 유닛(200B)에게 송신할 수 있다. 예를 들면, 제1 헤드셋 유닛(200A)이 사용자의 왼쪽 귀에 착용되고 제2 헤드셋 유닛(200B)이 사용자의 오른쪽 귀에 착용되는 경우에, 제1 NFMI 송수신부(220A)는 외부 시스템(100)으로부터 수신되는 음원 신호 중 사용자의 오른쪽 귀에 대하여 재생되어야 하는 일부 음원 신호만을 제2 헤드셋 유닛(200B)에게 송신할 수 있다.Specifically, according to an embodiment of the present invention, the first NFMI transceiver 220A may include a second headset unit (eg, a stereo, 5.1 channel, etc.) signal included in a sound source signal. Only some sound source signals that need to be reproduced by 200B can be transmitted to the second headset unit 200B. For example, when the first headset unit 200A is worn on the user's left ear and the second headset unit 200B is worn on the user's right ear, the first NFMI transceiver 220A is connected from the external system 100. Of the received sound source signals, only some sound source signals to be reproduced with respect to the right ear of the user may be transmitted to the second headset unit 200B.
다음으로, 본 발명의 일 실시예에 따르면, 제1 헤드셋 유닛(200A)에 포함되는 제1 신호 처리부(230A)는, 위의 수신되는 음원 신호에 대하여 인코딩, 디코딩, 증폭 등의 기설정된 신호 처리를 수행함으로써 제1 스피커부(240A)에서 재생될 제1 오디오 데이터를 생성하는 기능을 수행할 수 있다.Next, according to an embodiment of the present invention, the first signal processor 230A included in the first headset unit 200A may perform predetermined signal processing such as encoding, decoding, and amplification on the received sound source signal. The function of generating first audio data to be reproduced in the first speaker unit 240A may be performed by performing the operation.
다음으로, 본 발명의 일 실시예에 따르면, 제1 헤드셋 유닛(200A)에 포함되는 제1 스피커부(240A)는, 위의 생성되는 제1 오디오 데이터를 재생하는 기능을 수행할 수 있다.Next, according to an embodiment of the present invention, the first speaker unit 240A included in the first headset unit 200A may perform a function of reproducing the generated first audio data.
다음으로, 본 발명의 일 실시예에 따르면, 제2 헤드셋 유닛(200B)에 포함되는 제2 NFMI 송수신부(220B)는, NFMI 통신 채널을 통하여 제1 헤드셋 유닛(보다 구체적으로는, 제1 헤드셋 유닛(200A)에 포함되는 제1 NFMI 송수신부(220A))으로부터 송신되는 음원 신호를 수신하는 기능을 수행할 수 있다.Next, according to an embodiment of the present invention, the second NFMI transceiver 220B included in the second headset unit 200B may include a first headset unit (more specifically, a first headset) through an NFMI communication channel. A function of receiving a sound source signal transmitted from the first NFMI transceiver 220A) included in the unit 200A may be performed.
한편, 본 발명의 일 실시예에 따르면, RF 통신 채널을 통하여 외부 시스템(100)으로부터의 음원 신호가 제2 RF 송수신부(210B)에 의하여 수신되지 않거나 제2 RF 송수신부(210B)가 외부 시스템(100)의 RF 송수신부(110)와 연결(또는 블루투스 페어링)되지 않고 제2 NFMI 송수신부(220B)에 의하여 음원 신호가 수신되는 경우에(즉, 제2 헤드셋 유닛(200B)이 슬레이브 헤드셋 유닛이 되는 경우에), 제2 RF 송수신부(210B)는 제어 라인(control line)(25)을 통하여 제2 NFMI 송수신부(220B)에게 소정의 제어 신호를 전달할 수 있으며, 이러한 제어 신호에 따라, 제2 NFMI 송수신부(220B)는 제1 NFMI 송수신부(220A)로부터 음원 신호를 수신하는 수신기로서의 역할을 수행할 수 있게 된다. 또한, 본 발명의 일 실시예에 따르면, 제2 NFMI 송수신부(220B)에 의하여 음원 신호가 수신되는 경우에, 제2 RF 송수신부(210B)는 제2 NFMI 송수신부(220B)에 의하여 수신되는 음원 신호를 데이터 라인(data line)(26)을 통하여 제2 신호 처리부(230B)에게 전달(또는 릴레이(relay))할 수 있다.Meanwhile, according to an embodiment of the present invention, the sound source signal from the external system 100 is not received by the second RF transceiver 210B through the RF communication channel or the second RF transceiver 210B is the external system. When the sound source signal is received by the second NFMI transceiver 220B without being connected (or Bluetooth pairing) with the RF transceiver 110 of 100 (ie, the second headset unit 200B is a slave headset unit). In this case, the second RF transceiver 210B may transmit a predetermined control signal to the second NFMI transceiver 220B through a control line 25, and, according to the control signal, The second NFMI transceiver 220B may serve as a receiver for receiving a sound source signal from the first NFMI transceiver 220A. In addition, according to an embodiment of the present invention, when a sound source signal is received by the second NFMI transceiver 220B, the second RF transceiver 210B is received by the second NFMI transceiver 220B. The sound source signal may be transmitted (or relayed) to the second signal processor 230B through the data line 26.
하지만, 본 발명의 일 실시예에 따르면, 반대로, RF 통신 채널을 통하여 외부 시스템(100)으로부터의 음원 신호가 제2 RF 송수신부(210B)에 의하여 수신되거나 제2 RF 송수신부(210B)가 외부 시스템(100)의 RF 송수신부(110)와 상호 연결(또는 블루투스 페어링)되는 경우에, 제2 RF 송수신부(210B)는 제어 라인(control line)(25)을 통하여 제2 NFMI 송수신부(220B)에게 소정의 제어 신호를 전달할 수 있으며, 이러한 제어 신호에 따라, 제2 NFMI 송수신부(220B)는 제1 NFMI 송수신부(220A)에게 음원 신호를 송신하는 송신기로서의 역할을 수행할 수 있게 될 수도 있다.However, according to an embodiment of the present invention, on the contrary, the sound source signal from the external system 100 is received by the second RF transceiver 210B through the RF communication channel or the second RF transceiver 210B is external. When interconnected (or Bluetooth paired) with the RF transceiver 110 of the system 100, the second RF transceiver 210B is connected to the second NFMI transceiver 220B via a control line 25. A predetermined control signal may be transmitted to the second NFMI transceiver 220B according to the control signal, and thus the second NFMI transceiver 220B may serve as a transmitter for transmitting a sound source signal to the first NFMI transceiver 220A. have.
다음으로, 본 발명의 일 실시예에 따르면, 제2 헤드셋 유닛(200B)에 포함되는 제2 신호 처리부(230B)는, 위의 수신되는 음원 신호에 대하여 인코딩, 디코딩, 증폭 등의 기설정된 신호 처리를 수행함으로써 제2 스피커부(240B)에서 재생될 제2 오디오 데이터를 생성하는 기능을 수행할 수 있다.Next, according to an embodiment of the present invention, the second signal processor 230B included in the second headset unit 200B may perform predetermined signal processing such as encoding, decoding, and amplification on the received sound source signal. The second audio data to be reproduced in the second speaker unit 240B may be generated by performing the operation.
다음으로, 본 발명의 일 실시예에 따르면, 제2 헤드셋 유닛(200B)에 포함되는 제2 스피커부(240B)는, 위의 생성되는 제2 오디오 데이터를 재생하는 기능을 수행할 수 있다.Next, according to an embodiment of the present invention, the second speaker unit 240B included in the second headset unit 200B may perform a function of reproducing the second audio data generated above.
한편, 도 3은 본 발명의 일 실시예에 따라 NFMI 송수신부의 내부 구성을 예시적으로 나타내는 도면이다.Meanwhile, FIG. 3 is a diagram illustrating an internal configuration of an NFMI transceiver according to an embodiment of the present invention.
도 3을 참조하면, 본 발명의 일 실시예에 따른 NFMI 송수신부(220)(제1 NFMI 송수신부(220A) 및 제2 NFMI 송수신부(220B) 모두에 해당함)는, 자기 유도 송수신 안테나부(MI Transceiver Aerial)(221), 자기 유도 MAC 제어부(MI MAC Controller)(222), 오디오 샘플 레이트 변환부(Audio Sample Rate Converter)(223), 오디오 지연 제어부(Audio Latency Controller)(224), G.722/ADPCM 인코딩부(G.722/ADPCM Encoder)(225), I2S/PCM 제어부(I2S/PCM Controller)(226), 오디오 디지털 신호 처리부(Audio DSP)(227) 및 시스템 제어부(System Controller)(228)을 포함할 수 있다.Referring to FIG. 3, the NFMI transceiver 220 (corresponding to both the first NFMI transceiver 220A and the second NFMI transceiver 220B) according to an embodiment of the present invention may include a magnetic induction transceiver antenna unit ( MI Transceiver Aerial (221), MI MAC Controller (222), Audio Sample Rate Converter (223), Audio Latency Controller (224), G. 722 / ADPCM encoding unit (G.722 / ADPCM Encoder) 225, I2S / PCM controller (I2S / PCM Controller) 226, audio digital signal processing unit (Audio DSP) 227, and system controller (System Controller) ( 228).
계속하여, 도 3을 참조하면, 본 발명의 일 실시예에 따른 RF 송수신부(210)는, 제어 라인(31)을 통하여 NFMI 송수신부(220)에게 소정의 제어 신호를 전달함으로써, NFMI 송수신부(220)의 내부 구성요소의 설정값을 변경하거나 NFMI 송수신부(220)의 역할(송신기로서의 역할 또는 수신기로서의 역할) 변경할 수 있다. 또한, 도 3을 참조하면, 본 발명의 일 실시예에 따른 RF 송수신부(210)는, 데이터 라인(32)을 통하여 음원 신호를 전달하고, 오디오 데이터 값(I2S, PCM 등)에 따라 오디오 디지털 신호 처리부(227)에 대하여 음원 신호를 선택적으로 입력할 수 있다.3, the RF transceiver 210 according to an embodiment of the present invention transmits a predetermined control signal to the NFMI transceiver 220 through the control line 31, thereby providing an NFMI transceiver. The setting value of the internal component of 220 may be changed, or the role of the NFMI transceiver 220 (a role as a transmitter or a role as a receiver) may be changed. In addition, referring to FIG. 3, the RF transceiver 210 according to an embodiment of the present invention transmits a sound source signal through a data line 32 and performs audio digital according to audio data values (I 2 S, PCM, etc.). The sound source signal may be selectively input to the signal processor 227.
특히, 본 발명의 일 실시예에 따르면, RF 통신 채널을 통하여 외부 시스템(100)으로부터 음원 신호가 제1 RF 송수신부(210A)에 의하여 수신되거나 제1 RF 송수신부(210A)가 외부 시스템(100)의 RF 송수신부(110)와 연결(또는 블루투스 페어링)되는 경우에(즉, 제1 헤드셋 유닛(200A)이 마스터 헤드셋 유닛이 되는 경우에), 제1 RF 송수신부(210A) 또는 제1 신호 처리부(230A)는, NFMI 통신 채널을 통하여 제1 헤드셋 유닛(200A)으로부터 송신되는 음원 신호가 제2 헤드셋 유닛(200B)에 의하여 수신되는 데에 소요되는 시간을 참조로 하여, 제1 헤드셋 유닛(200A)에서 재생될 제1 오디오 데이터에 적용될 시간 지연(time delay)를 결정할 수 있다.In particular, according to an embodiment of the present invention, the sound source signal is received by the first RF transceiver 210A from the external system 100 via the RF communication channel or the first RF transceiver 210A is connected to the external system 100. When connected to (or Bluetooth pairing) the RF transceiver 110 of () when the first headset unit 200A becomes the master headset unit, the first RF transceiver 210A or the first signal The processor 230A refers to the first headset unit (see the time taken for the sound source signal transmitted from the first headset unit 200A to be received by the second headset unit 200B through the NFMI communication channel). At 200A, a time delay to be applied to the first audio data to be reproduced may be determined.
도 4는 본 발명의 일 실시예에 따라 무선 스테레오 헤드셋 시스템의 타이밍 동기화를 위한 내부 구성을 예시적으로 나타내는 도면이다.4 is a diagram illustrating an internal configuration for timing synchronization of a wireless stereo headset system according to an embodiment of the present invention.
도 5는 본 발명의 일 실시예에 따라 제1 헤드셋 유닛과 제2 헤드셋 유닛 사이 각각에서 재생되는 오디오 데이터 사이의 타이밍 동기화를 수행한 결과를 개념적으로 나타내는 도면이다.5 is a diagram conceptually illustrating a result of timing synchronization between audio data reproduced between each of a first headset unit and a second headset unit according to an embodiment of the present invention.
도 4 및 도 5를 참조하면, 제1 RF 송수신부(210A) 또는 제1 신호 처리부(230A)는, 음원 신호가 NFMI 통신 채널을 통하여 제1 헤드셋 유닛(200A)으로부터 제2 헤드셋 유닛(200B)에게 전송되는 데에 소요되는 시간(530)(즉, 제1 NFMI 송수신부(220A) 및 제2 NFMI 송수신부(220B)에서 수행되는 음원 신호 송수신 및 처리에 소요되는 시간)으로 인하여, 제2 헤드셋 유닛(200B)에서 재생되는 제2 오디오 데이터는 제1 헤드셋 유닛(200A)에서 재생되는 제1 오디오 데이터와 대비하여 소정의 시간(예를 들면, 수 ms) 만큼 늦게 재생되는 현상이 발생할 수 있다.4 and 5, the first RF transceiver 210A or the first signal processor 230A includes a sound source signal from the first headset unit 200A to the second headset unit 200B through the NFMI communication channel. The second headset due to the time 530 (ie, the time required for transmitting and receiving the sound source signal performed by the first NFMI transceiver 220A and the second NFMI transceiver 220B) for transmitting to the second headset. The second audio data reproduced in the unit 200B may be reproduced later by a predetermined time (for example, several ms) compared with the first audio data reproduced in the first headset unit 200A.
본 발명의 일 실시예에 따르면, 위와 같은 타이밍 차이를 보상하기 위하여, 제1 RF 송수신부(210A)에 포함되는 제1 시간 지연부(211A)가, 제1 RF 송수신부(210A)에 의하여 수신되는 음원 신호를 소정의 시간 동안 지연시킨 후에 제1 신호 처리부(230A)에게 전달할 수 있으며, 이로써 제1 헤드셋 유닛(200A)에서 재생되는 제1 오디오 데이터의 타이밍이 제2 헤드셋 유닛(200B)에서 재생되는 제2 오디오 데이터의 타이밍과 동기화될 수 있게 된다.According to an embodiment of the present invention, in order to compensate for the timing difference as described above, the first time delay unit 211A included in the first RF transceiver 210A is received by the first RF transceiver 210A. The sound source signal may be delayed for a predetermined time and then transferred to the first signal processor 230A, whereby the timing of the first audio data reproduced in the first headset unit 200A is reproduced in the second headset unit 200B. And the timing of the second audio data to be synchronized.
구체적으로, 본 발명의 일 실시예에 따른 제1 시간 지연부(211A)는, 오디오 샘플링 레이트(audio sampling rate)에 기초하여 제1 오디오 데이터에 적용될 시간 지연의 길이(540)를 결정할 수 있다. 예를 들면, 오디오 샘플링 레이트가 48kHz인 경우에, 제1 오디오 데이터에 대하여 적용될 시간 지연의 길이는 3ms로 결정될 수 있다.Specifically, the first time delay unit 211A according to an embodiment of the present invention may determine the length 540 of the time delay to be applied to the first audio data based on the audio sampling rate. For example, when the audio sampling rate is 48 kHz, the length of time delay to be applied for the first audio data may be determined to be 3 ms.
이상의 실시예에서, 제1 오디오 데이터와 제2 오디오 데이터 사이의 타이밍 동기화를 위한 시간 지연 기능을 수행하는 시간 지연부가 RF 송수신부 내에 포함되는 실시예에 대하여 주로 설명되었지만, 본 발명에 따른 시간 지연부의 구성이 반드시 상기 열거된 바에 한정되는 것은 아니고, 본 발명의 목적 또는 효과를 달성할 수 있는 범위 내에서 시간 지연부는 NFMI 송수신부, 신호 처리부 등의 다른 구성요소 내에 포함될 수도 있음을 밝혀 둔다.In the above embodiment, although the time delay unit for performing a time delay function for timing synchronization between the first audio data and the second audio data has been mainly described for the embodiment included in the RF transceiver, the time delay unit according to the present invention The configuration is not necessarily limited to those listed above, and it is understood that the time delay unit may be included in other components such as an NFMI transceiver, a signal processor, and the like within the scope of achieving the object or effect of the present invention.
한편, 본 발명의 일 실시예에 따르면, 제1 NFMI 송수신부(220A) 및 제2 NFMI 송수신부(220B)는, 수 GHz의 주파수 대역을 사용하여 음원 신호를 전송하거나 MIMO(Multiple Input Multiple Output) 방식으로 음원 신호를 전송함으로써, NFMI 통신 채널의 대역폭을 증대시킬 수 있다.Meanwhile, according to an embodiment of the present invention, the first NFMI transceiver 220A and the second NFMI transceiver 220B may transmit a sound source signal using a frequency band of several GHz or may use a multiple input multiple output (MIMO). By transmitting the sound source signal in a manner, it is possible to increase the bandwidth of the NFMI communication channel.
또한, 본 발명의 일 실시예에 따르면, 무선 스테레오 헤드셋 시스템(200)은, 제1 NFMI 송수신부(220A)에 포함되는 안테나와 제2 NFMI 송수신부(220B)에 포함되는 안테나가 서로 동일한 축 상에(coaxial) 배치되도록 하거나 서로 동일한 평면 상에(coplanar) 배치되도록 함으로써, NFMI 통신 거리를 증대시킬 수 있다.In addition, according to an embodiment of the present invention, the wireless stereo headset system 200, the antenna included in the first NFMI transceiver 220A and the antenna included in the second NFMI transceiver 220B are on the same axis. By being coaxial or coplanar with each other, the NFMI communication distance can be increased.
한편, 본 발명의 다른 실시예에 따르면, 무선 스테레오 헤드셋 시스템(200)은, NFMI 통신 채널이 아닌 RF 통신 채널을 통하여 제1 헤드셋 유닛(200A) 및 제2 헤드셋 유닛(200B) 사이의 통신을 수행할 수 있다.Meanwhile, according to another embodiment of the present invention, the wireless stereo headset system 200 performs communication between the first headset unit 200A and the second headset unit 200B through an RF communication channel rather than an NFMI communication channel. can do.
이를 위하여, 본 발명의 다른 실시예에 따르면, 제1 헤드셋 유닛(200A) 및 제2 헤드셋 유닛(200B)이 각각 제1 NFMI 송수신부(220A) 및 제2 NFMI 송수신부(220B)를 포함하지 않거나, 제1 헤드셋 유닛(200A)에 포함되는 제1 RF 송수신부(210A) 및 제2 헤드셋 유닛(200B)에 포함되는 제2 RF 송수신부(210B)가 각각 제1 NFMI 송수신부(220A) 및 제2 NFMI 송수신부(220B)의 전원 또는 기능을 차단할 수 있다.To this end, according to another embodiment of the present invention, the first headset unit 200A and the second headset unit 200B do not include the first NFMI transceiver 220A and the second NFMI transceiver 220B, respectively. The first RF transceiver 210A included in the first headset unit 200A and the second RF transceiver 210B included in the second headset unit 200B are the first NFMI transceiver 220A and the second receiver, respectively. 2 The power or function of the NFMI transceiver 220B may be cut off.
구체적으로, 본 발명의 다른 실시예에 따르면, 제1 헤드셋 유닛(200A)에 포함되는 제1 RF 송수신부(210A)는, RF 통신 채널을 통하여 외부 시스템(100)으로부터 음원 신호를 수신할 수 있고, 위의 수신되는 음원 신호를 RF 통신 채널을 통하여 제2 헤드셋 유닛(200B)에 포함되는 제2 RF 송수신부(210B)에게 송신하는 한편, 위의 수신되는 음원 신호를 소정의 시간 동안 지연시킨 후에 제1 신호 처리부(230A)에게 전달할 수 있다. 또한, 본 발명의 일 실시예에 따르면, 제2 헤드셋 유닛(200B)에 포함되는 제2 RF 송수신부(210B)는, RF 통신 채널을 통하여 제1 RF 송수신부(210A)로부터 수신되는 음원 신호를 수신할 수 있고, 위의 수신되는 음원 신호를 제2 신호 처리부(230B)에게 전달할 수 있다. 이로써, 제1 헤드셋 유닛(200A)에서 재생되는 제1 오디오 데이터의 타이밍이 제2 헤드셋 유닛(200B)에서 재생되는 제2 오디오 데이터의 타이밍과 동기화될 수 있게 된다.Specifically, according to another embodiment of the present invention, the first RF transceiver 210A included in the first headset unit 200A may receive a sound source signal from the external system 100 through an RF communication channel. After transmitting the received sound source signal to the second RF transceiver 210B included in the second headset unit 200B through the RF communication channel, while delaying the received sound source signal for a predetermined time. The signal may be transferred to the first signal processor 230A. In addition, according to an embodiment of the present invention, the second RF transceiver 210B included in the second headset unit 200B may receive a sound source signal received from the first RF transceiver 210A through an RF communication channel. It may be received, and may transmit the received sound source signal to the second signal processor 230B. Thus, the timing of the first audio data reproduced in the first headset unit 200A can be synchronized with the timing of the second audio data reproduced in the second headset unit 200B.
이상 설명된 본 발명에 따른 실시예들은 다양한 컴퓨터 구성요소를 통하여 수행될 수 있는 프로그램 명령어의 형태로 구현되어 비일시성의 컴퓨터 판독 가능한 기록 매체에 기록될 수 있다. 상기 비일시성의 컴퓨터 판독 가능한 기록 매체는 프로그램 명령어, 데이터 파일, 데이터 구조 등을 단독으로 또는 조합하여 포함할 수 있다. 상기 비일시성의 컴퓨터 판독 가능한 기록 매체에 기록되는 프로그램 명령어는 본 발명을 위하여 특별히 설계되고 구성된 것들이거나 컴퓨터 소프트웨어 분야의 당업자에게 공지되어 사용 가능한 것일 수도 있다. 비일시성의 컴퓨터 판독 가능한 기록 매체의 예에는, 하드 디스크, 플로피 디스크 및 자기 테이프와 같은 자기 매체, CD-ROM, DVD와 같은 광기록 매체, 플롭티컬 디스크(floptical disk)와 같은 자기-광 매체(magneto-optical media), 및 ROM, RAM, 플래시 메모리 등과 같은 프로그램 명령어를 저장하고 수행하도록 특별히 구성된 하드웨어 장치가 포함된다. 프로그램 명령어의 예에는, 컴파일러에 의해 만들어지는 것과 같은 기계어 코드뿐만 아니라 인터프리터 등을 사용해서 컴퓨터에 의해서 실행될 수 있는 고급 언어 코드도 포함된다. 상기 하드웨어 장치는 본 발명에 따른 처리를 수행하기 위해 하나 이상의 소프트웨어 모듈로서 작동하도록 구성될 수 있으며, 그 역도 마찬가지이다.Embodiments according to the present invention described above may be implemented in the form of program instructions that may be executed by various computer components, and may be recorded on a non-transitory computer readable recording medium. The non-transitory computer readable recording medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the non-transitory computer readable recording medium may be those specially designed and configured for the present invention, or may be known and available to those skilled in the computer software arts. Examples of non-transitory computer readable recording media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs, DVDs, magnetic-optical media such as floppy disks ( magneto-optical media) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules to perform the process according to the invention, and vice versa.
이상에서 본 발명이 구체적인 구성요소 등과 같은 특정 사항들과 한정된 실시예 및 도면에 의해 설명되었으나, 이는 본 발명의 보다 전반적인 이해를 돕기 위해서 제공된 것일 뿐, 본 발명이 상기 실시예들에 한정되는 것은 아니며, 본 발명이 속하는 기술분야에서 통상적인 지식을 가진 자라면 이러한 기재로부터 다양한 수정 및 변형을 꾀할 수 있다.Although the present invention has been described by specific embodiments such as specific components and the like, but the embodiments and the drawings are provided to assist in a more general understanding of the present invention, the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations can be made from these descriptions.
따라서, 본 발명의 사상은 상기 설명된 실시예에 국한되어 정해져서는 아니 되며, 후술하는 특허청구범위뿐만 아니라 이 특허청구범위와 균등하게 또는 등가적으로 변형된 모든 것들은 본 발명의 사상의 범주에 속한다고 할 것이다.Accordingly, the spirit of the present invention should not be limited to the above-described embodiments, and all of the equivalents or equivalents of the claims, as well as the appended claims, fall within the scope of the spirit of the present invention. I will say.

Claims (10)

  1. 무선 스테레오 헤드셋(headset)을 제공하기 위한 시스템으로서,A system for providing a wireless stereo headset,
    RF(Radio Frequency) 통신 채널을 통하여 외부 시스템으로부터 음원 신호를 수신하는 제1 RF 송수신부, 상기 수신되는 음원 신호를 NFMI(Near Field Magnetic Induction; 근거리 자기 유도) 통신 채널을 통하여 송신하는 제1 NFMI 송수신부, 상기 수신되는 음원 신호에 대하여 기설정된 신호 처리를 수행함으로써 제1 오디오 데이터를 생성하는 제1 신호 처리부, 및 상기 생성되는 제1 오디오 데이터를 재생하는 제1 스피커부를 포함하는 제1 헤드셋 유닛, 및A first RF transceiver for receiving a sound source signal from an external system through a radio frequency (RF) communication channel, and a first NFMI transmission / reception for transmitting the received sound source signal through a near field magnetic induction (NFMI) communication channel. A first headset unit including a first signal processor to generate first audio data by performing predetermined signal processing on the received sound source signal, and a first speaker unit to reproduce the generated first audio data; And
    NFMI 통신 채널을 통하여 상기 제1 헤드셋 유닛으로부터 송신되는 음원 신호를 수신하는 제2 NFMI 송수신부, 상기 제2 NFMI 송수신부에 의하여 수신되는 음원 신호에 대하여 기설정된 신호 처리를 수행함으로써 제2 오디오 데이터를 생성하는 제2 신호 처리부, 및 상기 생성되는 제2 오디오 데이터를 재생하는 제2 스피커부를 포함하는 제2 헤드셋 유닛A second NFMI transceiver for receiving a sound source signal transmitted from the first headset unit via an NFMI communication channel, and performing second signal processing on a sound source signal received by the second NFMI transceiver; A second headset unit including a second signal processor to generate and a second speaker to reproduce the generated second audio data
    을 포함하고,Including,
    NFMI 통신 채널을 통하여 상기 제1 헤드셋 유닛으로부터 송신된 음원 신호가 상기 제2 헤드셋 유닛에 의하여 수신되는 데에 소요되는 시간을 참조로 하여, 상기 제1 오디오 데이터에 적용될 시간 지연(time delay)을 결정하는 시스템.A time delay to be applied to the first audio data is determined by referring to the time taken for the sound source signal transmitted from the first headset unit to be received by the second headset unit through an NFMI communication channel. System.
  2. 제1항에 있어서,The method of claim 1,
    상기 RF 통신 채널에는, 저전력 블루투스(BLE; Bluetooth Low Energy) 통신 채널이 포함되는 시스템.The RF communication channel includes a Bluetooth Low Energy (BLE) communication channel.
  3. 제1항에 있어서,The method of claim 1,
    상기 제1 RF 송수신부 또는 상기 제1 신호 처리부는, 상기 시간 지연을 결정하는 기능을 수행하는 시간 지연부를 포함하는 시스템.The first RF transceiver or the first signal processor, the system including a time delay for performing the function of determining the time delay.
  4. 제1항에 있어서,The method of claim 1,
    상기 시간 지연은, 상기 제2 NFMI 송수신부에 의해 수행되는 오디오 샘플링 레이트(audio sampling rate)에 기초하여 결정되는 시스템.The time delay is determined based on an audio sampling rate performed by the second NFMI transceiver.
  5. 제1항에 있어서,The method of claim 1,
    상기 제2 헤드셋 유닛은, 제2 RF 송수신부를 더 포함하고,The second headset unit further includes a second RF transceiver,
    상기 외부 시스템으로부터의 음원 신호가 상기 제1 RF 송수신부에 의하여 수신되거나 상기 제1 RF 송수신부가 상기 외부 시스템의 RF 송수신부와 상호 연결되는 경우에, 상기 제1 NFMI 송수신부는 송신기로서의 역할을 수행하고 상기 제2 NFMI 송수신부는 수신기로서의 역할을 수행하도록 제어하고,When the sound source signal from the external system is received by the first RF transceiver or the first RF transceiver is interconnected with the RF transceiver of the external system, the first NFMI transceiver performs a role as a transmitter The second NFMI transceiver controls to perform a role as a receiver,
    상기 외부 시스템으로부터의 음원 신호가 상기 제2 RF 송수신부에 의하여 수신되거나 상기 제2 RF 송수신부가 상기 외부 시스템의 RF 송수신부와 상호 연결되는 경우에, 상기 제2 NFMI 송수신부는 송신기로서의 역할을 수행하고 상기 제1 NFMI 송수신부는 수신기로서의 역할을 수행하도록 제어하는 시스템.When the sound source signal from the external system is received by the second RF transceiver or the second RF transceiver is interconnected with the RF transceiver of the external system, the second NFMI transceiver performs a role as a transmitter And the first NFMI transceiver performs a role as a receiver.
  6. 제1항에 있어서,The method of claim 1,
    상기 제1 NFMI 송수신부에 포함되는 안테나와 상기 제2 NFMI 송수신부에 포함되는 안테나는 서로 동일한 축 상에(coaxial) 배치되거나 서로 동일한 평면 상에(coplanar) 배치되는 시스템.And the antenna included in the first NFMI transceiver and the antenna included in the second NFMI transceiver are coaxially arranged with each other or coplanar with each other.
  7. 무선 스테레오 헤드셋(headset)을 제공하기 위한 방법으로서,A method for providing a wireless stereo headset,
    제1 헤드셋 유닛이, RF(Radio Frequency) 통신 채널을 통하여 외부 시스템으로부터 음원 신호를 수신하는 단계,Receiving, by the first headset unit, a sound source signal from an external system via a radio frequency (RF) communication channel,
    상기 제1 헤드셋 유닛이, 상기 수신되는 음원 신호를 NFMI(Near Field Magnetic Induction; 근거리 자기 유도) 통신 채널을 통하여 송신하고, 상기 수신되는 음원 신호에 대하여 기설정된 신호 처리를 수행함으로써 상기 제1 헤드셋 유닛에서 재생될 제1 오디오 데이터를 생성하고, 상기 생성되는 제1 오디오 데이터를 재생하는 단계, 및The first headset unit transmits the received sound source signal through a near field magnetic induction (NFMI) communication channel, and performs a predetermined signal processing on the received sound source signal, thereby performing the first headset unit. Generating first audio data to be reproduced at, and reproducing the generated first audio data, and
    상기 제2 헤드셋 유닛이, NFMI 통신 채널을 통하여 상기 제1 헤드셋 유닛으로부터 송신되는 음원 신호를 수신하고, 상기 제2 헤드셋 유닛에 의하여 수신되는 음원 신호에 대하여 기설정된 신호 처리를 수행함으로써 상기 제2 헤드셋 유닛에서 재생될 제2 오디오 데이터를 생성하고, 상기 생성되는 제2 오디오 데이터를 재생하는 단계The second headset unit receives the sound source signal transmitted from the first headset unit through an NFMI communication channel, and performs the preset signal processing on the sound source signal received by the second headset unit, so that the second headset Generating second audio data to be reproduced in the unit, and reproducing the generated second audio data
    를 포함하고,Including,
    상기 제1 헤드셋 유닛은, NFMI 통신 채널을 통하여 상기 제1 헤드셋 유닛으로부터 송신된 음원 신호가 상기 제2 헤드셋 유닛에 의하여 수신되는 데에 소요되는 시간을 참조로 하여, 상기 제1 오디오 데이터에 적용될 시간 지연(time delay)을 결정하는 방법.The first headset unit is a time to be applied to the first audio data with reference to the time taken for the sound source signal transmitted from the first headset unit to be received by the second headset unit through an NFMI communication channel. How to determine the time delay.
  8. 제7항에 있어서,The method of claim 7, wherein
    상기 RF 통신 채널에는, 저전력 블루투스(BLE; Bluetooth Low Energy) 통신 채널이 포함되는 방법.The RF communication channel comprises a Bluetooth Low Energy (BLE) communication channel.
  9. 제7항에 있어서,The method of claim 7, wherein
    상기 시간 지연은, 상기 제2 NFMI 송수신부에 의해 수행되는 오디오 샘플링 레이트(audio sampling rate)에 기초하여 결정되는 방법.The time delay is determined based on an audio sampling rate performed by the second NFMI transceiver.
  10. 제7항에 따른 방법을 실행하기 위한 컴퓨터 프로그램을 기록한 비일시성의 컴퓨터 판독 가능한 기록 매체.A non-transitory computer readable recording medium having recorded thereon a computer program for executing the method according to claim 7.
PCT/KR2017/006092 2016-06-22 2017-06-12 Method and system for providing wireless stereo headset, and non-transitory computer-readable recording medium WO2017222222A1 (en)

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