KR101843800B1 - Method, system and non-transitory computer-readable recording medium for providnig wireless stereo headset - Google Patents

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

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KR101843800B1
KR101843800B1 KR1020160077985A KR20160077985A KR101843800B1 KR 101843800 B1 KR101843800 B1 KR 101843800B1 KR 1020160077985 A KR1020160077985 A KR 1020160077985A KR 20160077985 A KR20160077985 A KR 20160077985A KR 101843800 B1 KR101843800 B1 KR 101843800B1
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South Korea
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unit
nfmi
headset
sound source
source signal
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KR1020160077985A
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KR20180000163A (en
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변우영
변우성
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에잇비트 주식회사
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Priority to KR1020160077985A priority Critical patent/KR101843800B1/en
Priority to PCT/KR2017/006092 priority 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Otolaryngology (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Headphones And Earphones (AREA)

Abstract

The present invention relates to a method, system and non-transitory computer readable recording medium for providing a wireless stereo headset.
According to an aspect of the present invention, there is provided a system for providing a wireless stereo headset, comprising: a first RF transceiver for receiving a sound source signal from an external system via an RF (Radio Frequency) communication channel; A first NFMI transmitter and receiver for transmitting the audio signal through a Near Field Magnetic Induction (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 speaker unit for reproducing the generated first audio data, and a second NFMI transceiver for receiving a sound source signal transmitted from the first headset unit through an NFMI communication channel, By performing predetermined signal processing on the sound source signal received by the transmission / reception unit, the second audio data is generated And a second speaker unit for reproducing the generated second audio data, wherein the sound source signal transmitted from the first headset unit through the NFMI communication channel is transmitted to the second headset unit via the NFMI communication channel, A system is provided for determining a time delay to be applied to the first audio data with reference to the time required for reception by the second headset unit.

Figure R1020160077985

Description

≪ Desc / Clms Page number 1 > METHOD, SYSTEM AND NON-TRANSITORY COMPUTER READABLE RECORDING MEDIUM FOR PROVIDNIG WIRELESS STEREO HEADSET,

The present invention relates to a method, system and non-transitory computer readable recording medium for providing a wireless stereo headset.

In recent years, Bluetooth (more specifically, Bluetooth Classic Audio, A2DP protocol, or Bluetooth (or Bluetooth) audio) has emerged from the conventional concept of receiving and playing back sound signals from external systems (e.g., smartphones, PCs, A wireless headset for receiving and reproducing a sound source signal wirelessly through an RF (Radio Frequency) communication channel such as a low energy audio is widely spread.

In recent years, a wireless stereo headset has been introduced which is a full-fledged wireless stereo headset for signal transmission between a headset unit mounted on the left ear and a headset unit mounted on the right ear.

As one example of such conventional technology, there is a technique of 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 TWS (True Wireless Stereo).

However, according to the conventional technique of implementing a wireless connection between the left and right headset units using the RF communication channel, interference with other RF signals may occur, the signal transmission distance is long, the transmission range is wide, That is, the head portion of the user), it is difficult to obtain an even signal quality.

Accordingly, the present inventors have found that, by performing communication between the left and right headset units using Near Field Magnetic Induction (NFMI) technology, To solve the problem.

It is an object of the present invention to solve all the problems described above.

According to another aspect of the present invention, there is provided a wireless communication system including a first RF transmitting and receiving unit for receiving a sound source signal from an external system via an RF (Radio Frequency) communication channel, a second RF transmitting and receiving unit for receiving the sound source signal through a NFMI (Near Field Magnetic Induction) A first signal processing unit for generating first audio data by performing predetermined signal processing on the received sound source signal, and a second signal processing unit for reproducing the first generated audio data, A first headset unit including one speaker unit and a second NFMI transceiver for receiving a sound source signal transmitted from the first headset unit via the NFMI communication channel; A second signal processing unit for generating second audio data by performing processing on the first audio data, Wherein the first headset unit includes a second headset unit that includes a first headset unit and a second headset unit that includes a first headset unit and a second headset unit, It is possible to prevent the inconsistency due to the timing difference between the audio data reproduced in each of the left and right headset units while increasing the efficiency and quality of sound source signal transmission by using the NFMI communication channel by determining the time delay to be applied The other purpose is to provide a wireless stereo headset.

In order to accomplish the above object, a representative structure of the present invention is as follows.

According to an aspect of the present invention, there is provided a system for providing a wireless stereo headset, comprising: a first RF transceiver for receiving a sound source signal from an external system via an RF (Radio Frequency) communication channel; A first NFMI transmitter and receiver for transmitting the audio signal through a Near Field Magnetic Induction (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 speaker unit for reproducing the generated first audio data, and a second NFMI transceiver for receiving a sound source signal transmitted from the first headset unit through an NFMI communication channel, By performing predetermined signal processing on the sound source signal received by the transmission / reception unit, the second audio data is generated And a second speaker unit for reproducing the generated second audio data, wherein the sound source signal transmitted from the first headset unit through the NFMI communication channel is transmitted to the second headset unit via the NFMI communication channel, A system is provided for determining a time delay to be applied to the first audio data with reference to the time required for reception by the second headset unit.

According to another aspect of the present invention there is provided a method for providing a wireless stereo headset comprising the steps of: a first headset unit receiving a tone signal from an external system via an RF (Radio Frequency) communication channel; Unit transmits the received sound source signal through a NFMI (Near Field Magnetic Induction) communication channel, and performs predetermined signal processing on the received sound source signal to generate a sound signal to be reproduced in the first headset unit 1 audio data and 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, By performing predetermined signal processing on the sound source signal received by the second headset unit And generating the second audio data to be reproduced from the first headset unit via the NFMI communication channel, and reproducing the second audio data to be reproduced at the first headset unit, There is provided a method of determining a time delay to be applied to the first audio data with reference to a time required for reception by the second headset unit.

In addition, there is provided another method, system, and non-transitory computer readable recording medium for recording a computer program for carrying out the method for implementing the present invention.

According to the present invention, an effect of improving power efficiency in a short distance is achieved compared with the prior art using an RF communication channel.

In addition, according to the present invention, compared to the prior art using an RF communication channel, the effect of reducing the degree of the transmission signal being affected by the human body or attenuated by the human body can be achieved.

In addition, according to the present invention, bandwidth can be utilized in a relaxed manner, compared with the prior art using an RF communication channel that strictly observe a predetermined bandwidth.

According to the present invention, as the distance increases, the intensity of the NFMI signal is drastically reduced, so that the interference between the plurality of NFMI signals generated in each of the plurality of wireless stereo headsets can be drastically reduced, The generated NFMI signal can be prevented from spreading to a remote place, thereby enhancing security.

Further, according to the present invention, since a predetermined time delay can be applied to audio data reproduced in any one of the left and right headset units, the effect that the timings of the audio data reproduced in the left and right headset units can be synchronized can be achieved do.

1 is a diagram schematically illustrating an external configuration of a wireless stereo headset system according to an embodiment of the present invention.
2 is a diagram illustrating an exemplary internal configuration of a wireless stereo headset system according to an embodiment of the present invention.
3 is a diagram illustrating an exemplary internal configuration of an NFMI transceiver according to an embodiment of the present invention.
4 is an exemplary diagram illustrating an internal configuration for timing synchronization of a wireless stereo headset system in accordance with an embodiment of the present invention.
5 is a conceptual diagram illustrating a result of performing timing synchronization between audio data reproduced in each of a first headset unit and a second headset unit according to an embodiment of the present invention.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, 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 features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

Hereinafter, preferred 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 carry out the present invention.

Configuration of Wireless Stereo Headset System

Hereinafter, the internal configuration of the wireless stereo headset system 200 and the functions of the respective components will be described.

1 is a diagram schematically illustrating an external configuration of a wireless stereo headset system according to an embodiment of the present invention.

1, a wireless stereo headset system 200 according to one embodiment of the present invention includes a first headset unit 200A and a second headset unit 200A that can be worn on the left ear and right ear, 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 the external system 100 only through a wireless communication channel, completely wireless < / RTI > device.

Specifically, according to one embodiment of the present invention, as will be described later, the first headset unit 200A is connected to the external system 100 (for example, a smart phone) via an RF communication channel such as low- , Tablet, etc.) and transmits the received sound source signal to the second headset unit 200B through a near field magnetic induction (NFMI) communication channel, while the above reception A predetermined time delay is applied to the audio data according to the sound source signal, and then the corresponding sound source signal is reproduced from the speaker included in the first headset unit 200A.

In addition, according to an embodiment of the present invention, as described later, the second headset unit 200B can receive the sound source signal transmitted from the first headset unit 200A, Can be reproduced in the speaker included in the second headset unit 200B.

Meanwhile, according to one 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 connected to a master headset Unit and a slave headset unit. Specifically, in accordance with one embodiment of the present invention, a headset unit that directly receives a tone signal from the external system 100 may be a master headset unit, and may be configured to indirectly receive a tone signal from another headset unit The headset unit may be a slave headset unit.

2 is a diagram illustrating an exemplary internal configuration of a wireless stereo headset system according to an embodiment of the present invention.

Referring to FIG. 2, a 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 can be worn on the left and right ears of a user, respectively . The first headset unit 200A and the second headset unit 200B may include RF (Radio Frequency) transceivers 210A and 210B, NFMI transceivers 220A and 220B, Signal processing units 230A and 230B, and speaker units 240A and 240B. According to an embodiment of the present invention, at least a part of the RF transmitting and receiving units 210A and 210B, the NFMI transmitting and receiving units 220A and 220B, the signal processing units 230A and 230B and the speaker units 240A and 240B, Or may be program modules that communicate with other headset units 200A, 200B that are paired with each other. Such program modules may be included in the wireless stereo headset system 200 in the form of an operating system, application program modules, and other program modules, and may be physically stored on various known memory devices. These program modules may also be stored in a remote storage device capable of communicating with the wireless stereo headset system 200. [ These program modules include, but are not limited to, routines, subroutines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types as described below in accordance with the present invention.

Although described above with respect to wireless stereo headset system 200, this description is exemplary and at least some of the components or functions of wireless stereo headset system 200 may be implemented within external system 100 as needed Or may be included within the external system 100, as will be apparent to those skilled in the art.

The first RF transmitting and receiving unit 210A included in the first headset unit 200A may be connected to the external system 100 through the RF communication channel 21 (more specifically, And receiving sound source signals from the RF transceivers 110A and 110B included in the external systems 100A and 100B. Here, according to an embodiment of the present invention, a low-power Bluetooth (BLE) communication channel may be included in the RF communication channel used for receiving the sound source signal from the external system 100. [ However, the RF communication technology that can be used in the present invention is not necessarily limited to the low-power Bluetooth. Any other RF communication technology (for example, Wi-Fi) may be used within the scope of achieving the object of the present invention. , Wi-Fi Direct, LTE, etc.) can be used.

Meanwhile, according to an embodiment of the present invention, a sound source signal from the external system 100 is received by the first RF transmitting and receiving unit 210A through the RF communication channel, or the first RF transmitting and receiving unit 210A receives the sound signal from the external system When the first headset unit 200A is a master headset unit), the first RF transmitting / receiving unit 210A performs control (i.e., The first NFMI transceiver 220A may transmit a predetermined control signal to the first NFMI transceiver 220A through a control line 23. The first NFMI transceiver 220A may transmit the predetermined control signal to the second NFMI transceiver 220B And a transmitter for transmitting the sound source signal to the receiver. Also, according to an embodiment of the present invention, a sound source signal from the external system 100 is received by the first RF transmitting / receiving unit 210A via the RF communication channel, or the first RF transmitting / receiving unit 210A receives the sound signal from the external system The first RF transmitting and receiving unit 210A transmits data to the first NFMI transmitting and receiving unit 220A through the data line 24 when the first RF transmitting and receiving unit 210 is connected (or Bluetooth-paired) (Or relay) the sound source signal to be transmitted to the second headset unit 200B so that the first NFMI transmitter-receiver unit 220A transmits the sound source signal to the second headset unit 200B .

However, according to an embodiment of the present invention, conversely, when a sound source signal from the external system 100 through the RF communication channel is not received by the first RF transmitting and receiving unit 210A or the first RF transmitting and receiving unit 210A When the sound source signal is received by the first NFMI transmitter-receiver 220A without being connected (or Bluetooth-paired) with the RF transmitter-receiver unit 110 of the external system 100, the first RF transmitter- the first NFMI transmission / reception unit 220A may transmit a predetermined control signal to the first NFMI transmission / reception unit 220A through a control line 23. The first NFMI transmission / As a receiver for receiving the sound source signal from the sound source.

The first NFMI transceiver 220A included in the first headset unit 200A transmits the received sound source signal to the second headset 200A through the NFMI communication channel 22, To the second NFMI transmitting / receiving unit 220B (more specifically, the second NFMI transmitting / receiving unit 220B included in the second headset unit 200B).

In particular, according to an embodiment of the present invention, the first NFMI transmission / reception unit 220A may be configured to receive a plurality of (e.g., stereo, 5.1 channel, etc.) signals included in a sound source signal, 200B to the second headset unit 200B. For example, when the first headset unit 200A is worn on the left ear of the user and the second headset unit 200B is worn on the right ear of the user, the first NFMI transceiver 220A is connected to the external system 100 Only a part of the sound source signal to be reproduced with respect to the user's right ear can be transmitted to the second headset unit 200B.

Next, according to an embodiment of the present invention, the first signal processing unit 230A included in the first headset unit 200A performs predetermined signal processing such as encoding, decoding, and amplification on the received sound source signal So as to generate first audio data to be reproduced by the first speaker unit 240A.

Next, according to an embodiment of the present invention, the first speaker unit 240A included in the first headset unit 200A can perform the function of reproducing the generated first audio data.

Next, according to an embodiment of the present invention, the second NFMI transmission / reception section 220B included in the second headset unit 200B transmits / receives the first headset unit (more specifically, (The first NFMI transmitter-receiver 220A included in the unit 200A).

Meanwhile, according to an embodiment of the present invention, when the sound source signal from the external system 100 is not received by the second RF transmitting / receiving unit 210B through the RF communication channel, or the second RF transmitting / When the sound source signal is received by the second NFMI transmitting / receiving unit 220B (that is, when the second headset unit 200B is connected to the slave headset unit 200) without being connected (or Bluetooth-paired) with the RF transmitting / The second RF transmitting and receiving unit 210B may transmit a predetermined control signal to the second NFMI transmitting and receiving unit 220B through a control line 25. According to the control signal, The second NFMI transceiver 220B can serve as a receiver for receiving a tone signal from the first NFMI transceiver 220A. Also, according to an embodiment of the present invention, when a sound source signal is received by the second NFMI transmitting / receiving unit 220B, the second RF transmitting / receiving unit 210B may receive the sound signal from the second NFMI transmitting / (Or relay) the sound source signal to the second signal processing unit 230B through the data line 26. [

However, according to an embodiment of the present invention, conversely, a sound source signal from the external system 100 is received by the second RF transmitting / receiving unit 210B via the RF communication channel, or the second RF transmitting / The second RF transmitting and receiving unit 210B is connected to the second NFMI transmitting and receiving unit 220B through a control line 25 when the RF transmitting and receiving unit 110 of the system 100 is interconnected (or Bluetooth-paired) The second NFMI transceiver 220B may be capable of serving as a transmitter for transmitting a tone signal to the first NFMI transceiver 220A in accordance with the control signal have.

Next, according to an embodiment of the present invention, the second signal processing unit 230B included in the second headset unit 200B performs predetermined signal processing such as encoding, decoding, and amplification on the received sound source signal So as to generate second audio data to be reproduced by the second speaker unit 240B.

Next, according to an embodiment of the present invention, the second speaker unit 240B included in the second headset unit 200B can perform the function of reproducing the generated second audio data.

3 is a diagram illustrating an exemplary internal configuration of an NFMI transceiver according to an embodiment of the present invention.

3, the NFMI transmitting / receiving unit 220 (corresponding to both the first NFMI transmitting / receiving unit 220A and the second NFMI transmitting / receiving unit 220B) according to an embodiment of the present invention includes a magnetic induction transmitting / MI Transceiver Aerial 221, a MI MAC Controller 222, an Audio Sample Rate Converter 223, an Audio Latency Controller 224, A G.722 / ADPCM encoding unit 225, an I2S / PCM control unit 226, an audio digital signal processing unit (Audio DSP) 227, and a system controller 228).

3, the RF transceiver 210 according to an exemplary embodiment of the present invention transmits a predetermined control signal to the NFMI transmitter-receiver 220 through the control line 31, (The role of the transmitter or the role of the receiver) of the NFMI transceiver 220. In this case, 3, the RF transceiver 210 according to an exemplary embodiment of the present invention transmits a sound source signal through a data line 32 and outputs an audio digital signal according to an audio data value (I2S, PCM, etc.) It is possible to selectively input the sound source signal to the signal processing unit 227.

Particularly, according to an embodiment of the present invention, a sound source signal is received from the external system 100 through the RF communication channel by the first RF transmitting and receiving unit 210A, or the first RF transmitting and receiving unit 210A receives the sound signal from the external system 100 (I.e., when the first headset unit 200A becomes a master headset unit) with the first RF transmitting / receiving unit 210A or the first RF transmitting / receiving unit 210A (or Bluetooth pairing) The processing unit 230A refers to the time required for the sound source signal transmitted from the first headset unit 200A through the NFMI communication channel to be received by the second headset unit 200B, 200A to determine the time delay to be applied to the first audio data to be reproduced.

4 is an exemplary diagram illustrating an internal configuration for timing synchronization of a wireless stereo headset system in accordance with an embodiment of the present invention.

5 is a conceptual diagram illustrating a result of performing timing synchronization between audio data reproduced in each of a first headset unit and a second headset unit according to an embodiment of the present invention.

4 and 5, the first RF transmitting / receiving unit 210A or the first signal processing unit 230A receives the sound source signal from the first headset unit 200A through the NFMI communication channel to the second headset unit 200B, (I.e., the time required for transmission and reception of sound source signals performed by the first NFMI transmitter-receiver unit 220A and the second NFMI transmitter-receiver unit 220B) 530 The second audio data reproduced in the unit 200B may be reproduced by a predetermined time (for example, several ms) later than the first audio data reproduced in the first headset unit 200A.

According to an exemplary embodiment of the present invention, in order to compensate for the timing difference, the first time delay unit 211A included in the first RF transmitting and receiving unit 210A is received by the first RF transmitting and receiving unit 210A The first audio data is reproduced in the second headset unit 200B and the second audio data is reproduced in the first headset unit 200A. The second audio data can be synchronized with the timing of the second audio data.

In particular, the first time delay unit 211A according to an embodiment of the present invention can 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 the time delay to be applied to the first audio data may be determined to be 3 ms.

In the above embodiment, although the time delay for performing the time delay function for timing synchronization between the first audio data and the second audio data is mainly described in the embodiment including the RF transceiver, The configuration is not necessarily limited to those listed above, and it should be noted that the time delay section may be included in other components such as the NFMI transceiver section, the signal processing section, and the like within the scope of achieving the object or effect of the present invention.

Meanwhile, according to an embodiment of the present invention, the first NFMI transmitter-receiver 220A and the second NFMI transmitter-receiver 220B may transmit a sound source signal using a frequency band of several GHz or a multiple input multiple output (MIMO) By transmitting the sound source signal in the manner of the method, the bandwidth of the NFMI communication channel can be increased.

Also, according to an embodiment of the present invention, the wireless stereo headset system 200 may be configured such that the antenna included in the first NFMI transmitter-receiver 220A and the antenna included in the second NFMI transmitter-receiver 220B are on the same axis The NFMI communication distance can be increased by coaxially or coplanarly arranging the coplanar waveguide.

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 via the RF communication channel, not the NFMI communication channel can do.

To this end, according to another embodiment of the present invention, when 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 transmitting and receiving unit 210A included in the first headset unit 200A and the second RF transmitting and receiving unit 210B included in the second headset unit 200B are connected to the first NFMI transmitting and receiving unit 220A, 2 NFMI transmission / reception unit 220B.

Specifically, according to another embodiment of the present invention, the first RF transmitting and receiving unit 210A included in the first headset unit 200A can receive the sound source signal from the external system 100 through the RF communication channel , Transmits the received sound source signal to the second RF transmitting and receiving unit 210B included in the second headset unit 200B through the RF communication channel, and delays the received sound source signal for a predetermined time To the first signal processing unit 230A. In addition, according to an embodiment of the present invention, the second RF transceiver 210B included in the second headset unit 200B receives the sound source signal received from the first RF transceiver 210A through the RF communication channel And can transmit the received sound source signal to the second signal processing unit 230B. This makes it possible to synchronize the timing of the first audio data reproduced in the first headset unit 200A with the timing of the second audio data reproduced in the second headset unit 200B.

The embodiments of the present invention described above can be implemented in the form of program instructions that can be executed through various computer components and recorded in a non-transitory computer readable recording medium. The non-transitory computer readable medium may include program instructions, data files, data structures, etc., either alone or in combination. The program instructions recorded on the non-transitory computer-readable recording medium may be those specially designed and constructed for the present invention or may be those known to those skilled in the computer software arts. Examples of non-transitory computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs, DVDs, magneto-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 machine language code such as those generated by a compiler, as well as 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 for performing the processing according to the present invention, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Therefore, the spirit of the present invention should not be construed as being limited to the above-described embodiments, and all of the equivalents or equivalents of the claims, as well as the following claims, I will say.

110A, 120A: RF transmitting / receiving unit of the external system
200: Wireless stereo headset system
200A: first headset unit
210A: a first RF transmitting /
220A: first NFMI transmission /
230A: first signal processor
240A: first speaker section
200B: second headset unit
210B: the second RF transmitting /
220B: the second NFMI transmitting /
230B: a second signal processor
240B: second speaker unit
21: RF communication channel
22: NFMI communication channel
23, 25, 31: control line
24, 26, 32: data lines

Claims (10)

A system for providing a wireless stereo headset,
A first RF transmitting and receiving unit for receiving a sound source signal from an external system through an RF (Radio Frequency) communication channel, a first RF transmitting and receiving unit for transmitting the received sound source signal through a NFMI (Near Field Magnetic Induction) A first headset unit including a first signal processing unit for generating first audio data by performing predetermined signal processing on the received sound source signal and a first speaker unit for reproducing the generated first audio data, And
A second NFMI transceiver for receiving a sound source signal transmitted from the first headset unit through an NFMI communication channel, a second NFMI transmitter for receiving the second audio data by performing predetermined signal processing on the sound source signal received by the second NFMI transmitter- And a second speaker unit for reproducing the second audio data to be generated,
/ RTI >
Determines a time delay to be applied to the first audio data with reference to a time required for the sound source signal transmitted from the first headset unit to be received by the second headset unit through the NFMI communication channel and,
The first headset unit may delay the sound source signal received by the first RF transmitting and receiving unit by the determined time delay and then transmit the delayed sound source signal to the first signal processing unit, Synchronizes the timing of the data with the timing of the second audio data reproduced in the second headset unit,
Wherein the time delay is determined based on an audio sampling rate performed by the second headset unit,
Wherein the first NFMI transceiver performs a role as a transmitter and the second NFMI transceiver controls a role as a receiver when a sound source signal from the external system is received by the first RF transceiver,
The second headset unit further comprises a second RF transceiver,
The second NFMI transceiver performs a role as a transmitter and the first NFMI transceiver controls a role as a receiver when a sound source signal from the external system is received by the second RF transceiver,
The first NFMI transceiver unit and the second NFMI transceiver unit send and receive tone signals on the NFMI communication channel based on a Multiple Input Multiple Output (MIMO) scheme,
In order to increase the NFMI communication distance, the antennas included in the first NFMI transmission / reception unit and the antennas included in the second NFMI transmission / reception unit are disposed coaxially on the same axis or coplanar with each other system. The method according to claim 1,
Wherein the RF communication channel includes a low-power Bluetooth (BLE) communication channel. The method according to claim 1,
Wherein the first RF transceiver or the first signal processor includes a time delay unit that performs a function of determining the time delay. delete delete delete CLAIMS 1. 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,
Wherein the first headset unit transmits the received sound source signal through a NFMI (Near Field Magnetic Induction) communication channel and performs predetermined signal processing on the received sound source signal, Generating first audio data to be reproduced in the first audio data and reproducing the generated first audio data, and
The second headset unit receives the sound source signal transmitted from the first headset unit via the NFMI communication channel and performs predetermined signal processing on the sound source signal received by the second headset unit, Generating second audio data to be reproduced in the second audio data, and reproducing the generated second audio data
Lt; / RTI >
The first headset unit may be configured to determine a time to be applied to the first audio data by referring to a time required for the sound source signal transmitted from the first headset unit to be received by the second headset unit via the NFMI communication channel, Determining a time delay,
Wherein the first headset unit performs the predetermined signal processing after delaying the received sound source signal by the determined time delay so that the timing of the first audio data reproduced in the first headset unit and the timing of the second Synchronizing timings of the second audio data reproduced in the headset unit,
Wherein the time delay is determined based on an audio sampling rate performed by the second headset unit,
When the sound source signal from the external system is received by the first headset unit, the first headset unit acts as a transmitter and the second headset unit acts as a receiver,
When the sound source signal from the external system is received by the second headset unit, the second headset unit acts as a transmitter and the first headset unit controls to act as a receiver,
In the NFMI communication channel, the first headset unit and the second headset unit transmit and receive sound source signals based on a Multiple Input Multiple Output (MIMO) scheme,
Wherein the antenna included in the first headset unit and the antenna included in the second headset unit are coaxially disposed or coplanar with each other in order to increase the NFMI communication distance. 8. The method of claim 7,
Wherein the RF communication channel includes a low-power Bluetooth (BLE) communication channel. delete A non-transitory computer readable recording medium having recorded thereon a computer program for carrying out the method according to claim 7.
KR1020160077985A 2016-06-22 2016-06-22 Method, system and non-transitory computer-readable recording medium for providnig wireless stereo headset KR101843800B1 (en)

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