KR20180082757A - Wireless sound equipment - Google Patents

Abstract

A wearable body of the user; A first hole formed on the upper side of the main body; A second hole formed on the lower side of the main body and facing the user's body when worn by the user; A speaker including a first speaker through which sound is output through the first hole and a second speaker through which sound is output through the first hole; A wireless communication unit mounted on the main body and connected to the host terminal to transmit and receive data; And a control unit for controlling the first speaker and the second speaker based on data received from the wireless communication unit. The portable audio equipment according to claim 1, further comprising: a plurality of speakers individually driven to output a sound having directionality And can improve the quality of the micro input sound without affecting the microphone.

Description

{WIRELESS SOUND EQUIPMENT}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a portable acoustic apparatus for receiving a sound signal from a terminal via wireless communication with a terminal and transmitting a control signal for controlling the terminal.

A sound device refers to a sound device that receives a sound signal from a terminal and transmits the sound information collected through the microphone to the terminal. Conventionally, a wired method has been used in which a terminal is connected to an earphone jack of a terminal to receive an acoustic signal. However, in view of mobility and ease of use, the demand for a wireless communication type portable acoustic device is increasing.

Portable audio equipment having a design considering portability such as a headphone type in which a user puts his / her head into a band shape so as to be portable to the user's body, an ear-type type and an ear-type type are being developed. Portable audio devices are capable of listening to music at any place, and the type worn on the user's body is fixed to the user's body to enhance portability.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a portable acoustic apparatus including a speaker module oriented in another direction.

A wearable body of the user; A first hole formed on the upper side of the main body; A second hole formed on the lower side of the main body and facing the user's body when worn by the user; A speaker including a first speaker through which sound is output through the first hole and a second speaker through which sound is output through the first hole; A wireless communication unit mounted on the main body and connected to the host terminal to transmit and receive data; And a control unit for controlling the first speaker and the second speaker based on data received from the wireless communication unit.

An acoustic cable connected to the body; An earbud defective at an end of the acoustic cable to transmit sound; And a sound mode switch for selecting one of a first mode for outputting data received through the wireless communication unit through the earbud and a second mode for outputting the data through the speaker.

When the sound outputted through the earbud or the speaker is greater than or equal to the reference sound volume, the controller may output the sound volume to be output at a specified volume when the mode switch of the sound mode switch is sensed.

And a volume key for adjusting a volume output from the earbud or the loudspeaker, wherein the control unit controls the volume level of the earbud or the loudspeaker to be adjustable by the volume button, And the volume of the speaker.

The control unit may output sound through the speaker regardless of the state of the mode changeover switch when receiving the event occurrence information designated through the wireless communication unit.

The control unit may output sound through one of the first speaker and the second speaker according to the type of the event when the event generation information is received through the wireless communication unit.

And a control unit for controlling the amount of change of the volume according to the rotation speed of the volume key.

If the rotation speed of the volume key is fast, the magnitude of the volume change per unit angle of rotation is larger, and if the rotation speed of the volume key is slow, the magnitude of the volume of change per unit angle of rotation may be smaller.

The control unit may output sound through one of the first speaker and the second speaker according to the type of the event when the event generation information is received through the wireless communication unit.

The body

A first housing and a second housing which are respectively located on the right and left sides of the user's neck when worn by the user and in which the first speaker and the second speaker are mounted; And a band portion connecting the pair of housings. When the user wears the main body, the first hole may be positioned behind the second hole.

When the data received through the wireless communication unit includes direction information, the controller may output the received data through a speaker located in a direction corresponding to the direction information among the plurality of speakers.

When the sound is input through the microphone, sound is output to the speaker located in the second housing, and the speaker located in the first housing may be inactivated.

The wireless communication unit is capable of simultaneously wirelessly communicating in the A2DP and HFP mode, and the controller can output the sound designated through the speaker located in the second housing.

Wherein the control unit stops the music being played to the host terminal or transmits a signal for ending the call in the call state if the mute key is activated and the mute state is not released within a predetermined time can do.

When the call is terminated, a voice message can be transmitted to the calling party.

Wherein the wireless communication unit is connected to a wireless communication unit of the slave sound equipment and transmits sound data received from the host equipment, and the control unit controls the sound output through the speaker of the portable sound equipment and the output of the sound output from the slave sound equipment Can be synchronized and transmitted at the same time.

The portable acoustic apparatus of the present invention can provide a 3D stereophonic sound by providing a speaker module oriented in another direction. In particular, a vibrating speaker directed to a user's body can transmit vibrations not only to sounds but also vibrational sounds.

In addition, it is possible to individually output a sound having a direction by driving a plurality of loudspeakers separately, and to improve the quality of a micro-input sound without affecting the microphone.

Further scope of applicability of the present invention will become apparent from the following detailed description. It should be understood, however, that the detailed description and specific examples, such as the preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art.

1 is a block diagram showing a configuration of a portable acoustic apparatus according to the present invention.
2 is a perspective view of a portable audio device according to an embodiment of the present invention, viewed from one direction.
FIG. 3 is a view illustrating a state in which the upper case of the portable acoustic apparatus is opened according to an embodiment of the present invention.
FIG. 4 is a perspective view of a portable acoustic apparatus according to an embodiment of the present invention, viewed from another direction.
5 is a view illustrating a state in which a portable sound device according to an embodiment of the present invention is worn by a user.
6 is a view for explaining respective positional relationships of speakers of a portable acoustic apparatus according to an embodiment of the present invention.
7 is a diagram for explaining a head transfer function applied to a portable acoustic apparatus according to an embodiment of the present invention.
8 is a conceptual diagram for explaining a user input unit and an interface unit of a portable acoustic apparatus according to an embodiment of the present invention.
9 is a view for explaining a method of operating a user input unit of a portable acoustic apparatus according to an embodiment of the present invention.
FIG. 10 is a diagram for explaining the TWS function of the portable acoustic apparatus according to an embodiment of the present invention.
11 is a view for explaining a control method of the host terminal when the portable acoustic apparatus according to the embodiment of the present invention is muted.
12 is a view for explaining a method of operating the volume control wheel of the portable acoustic apparatus according to an embodiment of the present invention.
FIG. 13 is a diagram for explaining an example of a volume adjusting method in the first mode and the second mode.
FIG. 14 is a view for explaining a volume control method when a mode is switched between a speaker and an earbud of a portable audio apparatus according to an embodiment of the present invention.
FIG. 15 is a diagram for explaining a method of performing a conference call using four speakers of a portable acoustic apparatus according to an embodiment of the present invention.
16 is a view for explaining a communication method between the portable acoustic apparatus and the host terminal according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

1 is a block diagram of a portable acoustic apparatus 200 according to an embodiment of the present invention. The portable acoustic apparatus 200 includes a control unit 280, a wireless communication unit 285, a sound output unit 240, A sensing unit 275, a microphone 260, a user input unit 270, and a power supply unit 290.

The ear bud 241 is a device for transmitting sound by being inserted into a user's ear and the speaker 242 is not inserted into the ear of the user and is separated from the ear In which the sound is transmitted. Therefore, the size of the sound output from the ear bud 241 is smaller than the sound output from the speaker.

The earbud 241 is detachable from the main body and can be inserted into the user's ear, and the speaker 242 is positioned inside the main body. The loudspeaker may be located in the body portion rather than the portion of the elastic band 210 so that the loudspeaker may be positioned below the ear of the user.

The wireless communication unit 285 receives data from another portable device such as the host terminal 100 or a base station, or transmits a command received through the user input unit to another portable device wirelessly. The wireless communication unit 285 uses a short-range wireless communication method to transmit and receive signals to and from a nearby portable device. The short-range wireless communication uses Bluetooth ™, Radio Frequency Identification (RFID), Infrared Data Association (Wireless Local Area Network) technology using at least one of IrDA, UWB, ZigBee, Near Field Communication (NFC), Wireless-Fidelity (Wi-Fi) .

When another portable sound device capable of performing short-range wireless communication is located in the communicable range

Or to transmit and receive signals from the base station. For example, it is possible to use a communication system such as Global System for Mobile communication (GSM), Code Division Multi Access (CDMA), Code Division Multi Access 2000 (CDMA2000), Enhanced Voice-Data Optimized or Enhanced Voice- (LTE), a long term evolution (LTE-A), or the like) based on a base station (BS), a high speed downlink packet access (HSDPA), a high speed downlink packet access And transmits the radio signal to at least one of the terminal and the server of the base station.

The wireless signal may include various types of data depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The control unit 280 controls the sound output unit 240 to output sounds based on the data received from the wireless communication unit 285 and controls the portable sound device 200 in accordance with the command input through the user input unit. Or transmits a signal to another electronic apparatus connected to the portable audio-visual apparatus 200. [

The control unit 280 can control the wireless communication unit to automatically connect with the host terminal 100 sensed by the near field wireless communication unit and automatically connect when the sensed host terminal 100 is the authenticated device.

The microphone 260 processes the external acoustic signal into electrical voice data. The processed voice data is transmitted to the host terminal 100 or the external server through the wireless communication unit 285. The microphone 260 may be implemented with various noise reduction algorithms for eliminating noise generated in receiving an external sound signal.

The sensing unit 275 recognizes the state of the portable acoustic device 200 itself and its surroundings. The sensing unit 275 includes a light sensor for sensing the brightness of the surroundings, a touch sensor for sensing the touch input, A gyro sensor for sensing the ear bud 241, an ear bud switch for detecting whether or not the ear bud 241 is located in the ear bud holder 225, and the like.

The user input unit 270 is an input unit for the user to control the portable audio device 200. The user input unit 270 may include a call button 272, a button 273 for controlling volume, a power button 271, and the like.

2 is a perspective view of the portable acoustic device 200 according to an embodiment of the present invention, viewed from one direction.

The main body of the portable acoustic apparatus 200 according to the present invention includes a pair of housings 220 on which components are mounted on left and right sides and a band (not shown) connecting the pair of housings 220 210). The band 210 has elasticity, so that the curvature of the band 210 can change when the user holds the left and right housings 220 apart. The shape memory alloy 215 (see FIG. 14) may be included in the band 210 so that the original shape can be restored even if the shape of the band 210 changes due to an external force.

When the portable sound device 200 is placed on the user's neck, the band 210 is positioned behind the user's neck and the pair of housings 220 are positioned on the left and right sides of the user's neck. The band 210 and the housing 220 can form a continuous surface and a portion of the user who touches the neck can be prevented from easily separating from the user's body by using a material having a large frictional force.

The band 210 may be provided with a displacement sensor for sensing a change in curvature to sense that the end of the portable audio-visual device 200 is worn by the wearer. In this case, since the curvature of the band 210 changes gently, it is determined that the user intends to use the portable acoustic device 200, and the power of the portable acoustic device 200 is turned on or synchronized with the host terminal 100 have.

The curvature after the change of the curvature of the band 210 in the displacement sensor may be considered in order to more accurately determine whether the user wears it or whether it is worn on the mobile phone. For example, if the curvature of the band 210 changes greatly to a first magnitude and then the curvature is fixed at a curvature of a second magnitude that is smaller than the first magnitude of the portable acoustic device 200 and greater than the original magnitude, 200) is worn on the user's neck.

In addition to the displacement sensor, a sensor such as a temperature sensor, a light sensor, or a heart sensor is provided on a wear surface of the wearer when the wearer worn the wearer's body, so that the temperature is in a person's body temperature range or brightness is darkened. The power of the portable audio-visual device 200 may be turned on, or the wireless communication unit 285 may be activated to synchronize with the host terminal 100.

Or a switch that is pressed in a physical manner so that the protruding switch is pressed to generate an ON signal when the user wears the switch. When the ON state of the switch is maintained for a predetermined time or longer, the portable sound device 200 is powered on, ). ≪ / RTI > The sensor and the plurality of switches may be provided so as to accurately determine whether the sensor and the switch are worn by combining a plurality of values.

Various components can be mounted in the inner space of the housing 220. The housing 220 uses a rigid member to protect internal components and may be formed by injection molding of synthetic resin or may be formed of metal such as stainless steel (STS), aluminum (Al), titanium (Ti) have. A main board 281, a battery 291, a microphone 260 and a microphone 260 are mounted in the housing 220 and an ear bud 241 detachably attached to a holder located outside the housing 220 Respectively.

The body of the present invention extends in the frontward direction from the rear outer side in the portion of the housing 220 while expanding laterally in the band 210. It has a UFO-like shape and is arranged so that the top surface faces slightly outward according to the shoulder shape of the user for close contact with the body. The shape of the housing 220 is changed so that the upper surface thereof is turned to the right and left, and the lower surface of the housing 220 and the lower surface of the housing 220, To the neck of the person.

The main board 281 is a control unit 280 on which various electronic components are mounted and controls each component, and data collected from each component (voice data collected by the microphone 260, user sensed by the user input unit 270) Command and voice data received by the wireless communication unit 285).

The battery 291 charges and receives an external power source through a charging terminal, and supplies power required for each component. The batteries 291 may be disposed on the left and right sides for symmetry of the left and right weights, and various components may be disposed such that the battery 291 is disposed in only one housing and other components are mounted in the housing 220 on the other side.

The microphone 260 is configured to receive the user's voice, other sounds, and the like. A plurality of microphones 260 may be provided to receive stereo sound.

An indicator may be further provided to visually transmit information to the user. The indicator may provide other information, such as color of light, degree of blinking, and the like. For example, when charging is completed, the red light flashes green when the charging is completed and the blue light may blink if the wireless communication unit is connected to an external device.

The ear bud 241 is mounted in the output portion and inserted into the user's ear. The output may be smaller than the speakers 246 and 247 because it may include an ear cap made of an elastic material to fit the user's ear and provide immediate sound to the user's ear. The earbud 241 is detachably coupled to an ear bud holder 225 located outside the housing 220 without being mounted inside the body and is connected to the main board 281 through an acoustic cable 245 The sound signal is transmitted and the sound is outputted.

And may include a rotation module 250 for accommodating the acoustic cable 245 therein, which is inconvenient to tangle or twist the head when the acoustic cable 245 is carried while exposed to the outside. The rotary module 250 is a cylindrical member connected to one end of the acoustic cable 245. The acoustic cable 245 is wound around the outer circumference of the rotary module 250 to receive the acoustic cable 245 inside the housing 220. The earbud 241 Is pulled along the acoustic cable 245 and is seated in the earbud holder 225.

FIG. 3 is a view showing a state where the upper casing 221 of the portable acoustic device 200 according to the embodiment of the present invention is opened. FIG. 4 is a perspective view of the portable acoustic device 200 according to an embodiment of the present invention. It is a perspective view from the other direction.

Each housing 220 is provided with a first speaker 246 for outputting sound through the first hole 226 on the upper surface and a second speaker 247 for outputting sound through the second hole 227 on the lower surface of the housing 220 .

The first speaker 246 and the second speaker 247 are oriented in different directions and the first speaker 246 faces the upper side of the housing 220 toward the user's ear and the second speaker 247 Is directed downward to be output toward the user ' s body. The first speaker 246 and the second speaker 247 may be bundled into one module or may be mounted on the housing 220 as independent modules.

The first speaker 246 may use full rage speakers 246 and 247 for outputting sounds of all frequency bands evenly and the second speaker 247 may use a medium / A vibration speaker having a strength to reproduce can be used.

The sound of the high frequency band is strong because of the short wavelength, and if there is an obstacle, the sound is not reflected and reflected. Therefore, directionality is important in order to transmit a sound in a high frequency band, and it exhibits a different sound effect depending on the direction.

The low-frequency sound has a long wavelength, so diffraction is good and sound is transmitted even if the direction is not directed to the ear. Particularly, the second hole 227, in which the second speaker 247 of the present invention is located, is located on the lower surface of the housing 220 and directly contacts the user's body to transmit sound directly to the user's body. Because the low-frequency sound has a vibration effect, it can produce a vibration effect only by the sound without the vibration element.

FIG. 5 is a view illustrating a state in which a portable acoustic apparatus 200 according to an embodiment of the present invention is worn by a user. 6 is a view for explaining respective positional relationships of the speakers 246 and 247 of the portable acoustic device 200 according to an embodiment of the present invention.

Referring to FIGS. 5 and 6, the first speaker 246 and the second speaker 247 of the present invention include four speakers 246 and 247, respectively, each of which is provided in the left and right housings 220. In addition, more speakers 246 and 247 can be provided, but basically four speakers 246 and 247 can provide sounds having various directions.

As shown in FIG. 5, when the user wears the portable acoustic device 200, the first speaker 246 is located behind by a and the second speaker 247 is located by b around the ear . As shown in FIG. 6, the first speaker 246 may be positioned outside in the left and right direction on the basis of the worn state, and the second speaker 247 may be positioned further inward in the left and right direction.

That is, the mounting positions of the first speaker 246 and the second speaker 247 are spaced apart by d in the front-rear direction and separated by d 'in the left-right direction based on the state in which the user wears the portable acoustic device 200. The forward and backward distance d between the first speaker 246 and the second speaker 247 can be estimated based on the size of the user's ear. Statistically the user's ear size is shown to have a size of 28.4 mm to 31.8 mm such that the forward and backward distance d between the first speaker 246 and the second speaker 247 corresponds to the ear size of the user They can be arranged at an interval of 27 mm to 40 mm.

If the distance between the first speaker and the second speaker is widened, it is necessary to place the speaker at a position not far from the user's ear because a large amount of energy is required. If it is too close, The spacing is adjusted so that it can be placed as

The body of the portable audio-visual device 200 of the present invention has a shape in which the left and right sides of the body are C-shaped and connected to the housing 220 from the band 210 to be narrowed at the ends of the housing 220 .

Since the first speaker 246 is positioned slightly rearward from the lower side of the user's ear and the second speaker 247 is positioned slightly forward of the user's collarbone portion of the user, It can be arranged more inward in the left-right direction than in the left-right direction.

Since the first speaker 246 is located at the back of the ear, it is transmitted through the auricle, unlike a sound transmitted from the front of the user or a sound inserted directly into the ear and directly supplied to the ear canal. Accordingly, the sound output from the first speaker 246 may have a slight time difference, and may sound like a reflected sound in a closed space or a user may feel like a sound heard from the back of the user.

As shown in FIG. 5, the shoulder portion of the user's body located on the right and left sides of the neck is directed upward, and the chest is directed toward the front, so that the collarbone position is slightly obliquely positioned in the direction from the front to the upper side. Accordingly, the first and second holes 226 and 227 are in direct contact with the collarbone, so that the direction of the first speaker 246 and the direction of the second speaker 247 Are directed in different directions.

The housing 220 is bent downward between the first speaker 246 and the second speaker 247 in order to make the direction of the first speaker 246 and the second speaker 247 different from each other, And may further include a protruding bent portion 224. When the user wears the portable audio-visual device 200, the rear portion of the portable audio-visual apparatus 200 may be oriented upwardly with respect to the bent portion 224 and the front portion thereof may be oriented obliquely upward.

It is possible to implement more channels (for example, 5.1 channels, 7.1 channels) than the number of speakers 246 and 247 mounted using the four speakers 246 and 247 of the portable acoustic device 200 of the present invention. In a typical 5.1 home theater system, five speakers are arranged on the left front, right front, front front, left rear, and right rear, and a woofer speaker can be additionally placed for three-dimensional sound.

The first speaker 246 and the second speaker 247 of the present invention are not separated from each other but are divided into left and right sides around the ears so that the front left speaker 246 and the right rear speaker 246, 247). The second speaker 247 can provide an effect similar to that of the speaker positioned at the front front when the two speakers 247 are simultaneously output and the second speaker 247 can serve as a woofer speaker because it is a vibrating speaker.

In a typical home theater system, the point at which an optimum sound, called a sweet spot, is determined, and there is a disadvantage in that it can not hear the optimum sound when it goes beyond this point. When the user moves away from the sweet spot, the music can not be heard properly, and the sound output from the speakers of the home theater system is heard in the neighborhood, so soundproofing is required for music listening.

However, since the portable audio-visual equipment 200 of the present invention is worn on the user's body, the position of the speakers 246 and 247 is fixed to the user's body even if the user moves. Moreover, since the distance between the user's ear and the speaker of the home theater system is close to that of the speaker of the home theater system, it is possible to listen to the music with sufficient sound even with a small output sound.

In particular, since the second speaker 247 transmits sound directly to the user's body, it is possible to appreciate more realistic music, and thus it can be used more effectively when viewing media contents such as a game or a virtual reality.

In order to realize 5.1 channel sound, when receiving sound signal by Bluetooth method, it converts it into 2 channel signal and transmits it. Therefore, there is a problem that the sound source data classified into 5.1 channels is lost. The control unit 280 can decode the two-channel signal transmitted through the Bluetooth and provide the sound by separating the signal into four speakers 246 and 247.

Four speakers 246 and 247 are arranged on the front, back, left, and right sides, respectively, to provide a surround sound effect because the speakers are physically oriented with respect to the ear.

7 is a diagram for explaining a head-related transfer function (HRTF) applied to the portable acoustic apparatus 200 according to an embodiment of the present invention.

Because the user's ears are located on the left and right sides of the head, the sound heard from the left or right side produces a time difference between the sound heard from the left side and the sound heard from the right side, and the closer the ear is heard.

As shown in FIG. 7 (a), the time difference of the sound heard in the left ear and the right ear is referred to as interaural time difference (ITD), and the difference in size of the sound heard in the left ear and the right ear is referred to as interaural level difference (ILD).

Since the face is simply an obstacle in the transmission path of the sound as well as the distance, the sounds that are perceived for the same sound source in the left ear and the right ear are different. A function that calculates this difference more finely is called a head related transfer function (HRTF).

The head transfer function is a value obtained by obtaining the impulse responses of both left and right sides of each position at regular intervals between a 360-degree azimuth and an 180-degree altitude angle using a dummy head microphone modeled by human auditory organs. , And the reflection due to the curvature of the auricle varies depending on the arrival direction of the sound, so that the stereophonic sound can be perceived.

In order to feel the distance of the sound source, it is possible to feel the sound three-dimensionally according to the level of the volume and the reverberation, as well as the delay of the sound sensed by the left ear and the right ear.

8 is a conceptual diagram illustrating a user input unit and an interface unit of the portable acoustic device 200 according to an embodiment of the present invention. The user input unit includes a first key 2711 for playing and stopping music, a second key 2712 for starting and ending a call, a third key 2713 for changing or rewinding the music order, and a fourth key 2713 for controlling volume A key 2714, a power switch 2716 for turning on / off the power, and a sound mode switch 2717 for changing the sound output mode.

The first key to the third key 2711, 2712, and 2713 are pressed in a button shape to input a command from the user. The fourth key 2714 is rotated in a wheel shape, Can be adjusted. The fourth key 2714 of the present invention can be pressed by a button other than the rotation to input a user command.

The switches 2716 and 2717 can use one of a pushing type and a slide type in a form in which at least two states can be changed. In the case of the pushing-type switch, the button-shaped keys 2711, 2712, and 2713 are restored to the original state by pressing but the switches 2716 and 2717 remain in the changed state and are restored to the original state when pressed again.

9 is a diagram for explaining a method of operating the user input unit 270 of the portable acoustic device 200 according to an embodiment of the present invention. The switches 2716 and 2717 and the wheel-shaped fourth key 2714 are pressed and input, and the button-shaped keys 2711, 2712 and 2713 are pressed and input. At this time, it is possible to recognize other commands according to the number of times of pressing and the pressing time of the button-shaped keys 2711, 2712, and 2713 to perform other functions.

The first key 2711 performs an equalizing function for shortening the playing time of the multimedia or stopping the multimedia being reproduced and correcting the sound quality by pressing twice in succession. It is possible to fine-tune through the host terminal 100 connected by wireless communication with the portable acoustic apparatus 200. However, the portable acoustic apparatus 200 itself may be equalized by selecting a predetermined number of equalizer modes .

The third key 2713 can provide the user with simple information such as changing the order of songs from the previous song to the next and playing back the music by pressing a short key, and informing the remaining battery level or notifying the current time when the key is pressed and held. In addition, when the music is being played back, the user can notify the remaining time or the number of the missed call, or the user can directly check the time or simple information by pressing the third key 2713 without looking at the host terminal 100.

The second key 2712 is a key for performing a function relating to a call. The second key 2712 can be short-pressed to hang up a telephone call or disconnect a telephone in a call, and can be directly connected to a designated number by pressing twice continuously in a short time. Press and hold to dial the last number you dialed. The function that is performed when the button is pressed twice or continuously is changed twice.

The wheel-shaped fourth key 2714 has a function of adjusting the volume, and can increase or decrease the sound according to the rotating direction. Most of the wheel is located inside the housing 220 and one side of the wheel protrudes to the outside of the housing 220 to push the protruded portion of the wheel by hand to adjust the volume. Or pressing a protruding portion, a specific function can be performed like a normal button. In this embodiment, it is possible to perform a mute function for switching the volume of output sound to zero.

The power switch 2716 can turn on / off the power of the portable audio player 200. When the power of the portable power source device is turned on, the user can directly search and connect the connected host terminal 100. [

Next, the sound mode switch 2717 determines a means for outputting the sound data received through the wireless communication unit. Depending on the direction of the switch, it may be determined whether the sound is output to the speakers 246 and 247 or the sound is output through the ear bud 241. [ Hereinafter, for convenience of explanation, a state in which sound is output from the ear bud 241 is referred to as a second mode in which sound is output through the first mode speakers 246 and 247. [

FIG. 10 is a diagram for explaining a TWS function of the portable acoustic apparatus 200 according to an embodiment of the present invention. The portable acoustic apparatus 200 of the present invention functions as a master itself to transmit a signal received from the host apparatus from another portable acoustic apparatus 200 to simultaneously output the same sound source from the two portable acoustic apparatuses 200 .

True Wireless Stereo (TWS) technology is required to implement such a function, and the portable audio-visual device 200 itself of the present invention becomes a master device, and the other portable audio-visual device 200 becomes a slave Receives a signal from the master device and outputs sound. At this time, it is necessary to synchronize the master device and the slave device so that they can simultaneously transmit sound.

The portable acoustic device 200 of the present invention has no display unit and the input unit is limited so that a limited number of user input units must be used to connect the master device and the slave device. The function as the master device is activated by simultaneously pressing the key for reproducing the previous song and the first key for reproduction 2711 among the third keys of the master device connected to the host terminal 100. [

At this time, in the slave device, when the key for reproducing the next piece of the third key 2713 and the first key 2711 are simultaneously pressed, the slave device can be connected to the master device and receive and reproduce the sound data from the master device.

11 is a diagram for explaining a control method of the host terminal 100 when the portable acoustic device 200 according to the embodiment of the present invention is muted. The portable acoustic device 200 of the present invention may be connected to the host terminal 100. Although only the smart phone is shown in the drawing, the host terminal 100 can be connected to various multimedia devices such as a TV, a notebook computer, and the like.

The multimedia sound reproduced from the host terminal 100 is output through the speakers 246 and 247 or the ear bud 241 of the portable audio player 200. When the host terminal 100 is in the call function, And transmits the voice to the host terminal 100 through the microphone 260 of the portable electronic device.

When the host terminal 100 performs a call function, wireless communication between the portable audio device 200 and the host device uses a HSP (Head Set Profile) or HFP (Hands Free Profile), and the host device reproduces multimedia The wireless communication between the portable audio player 200 and the host device can be performed through one of Advanced Audio Distribution Profile (A2DP), Audio / Video Remote Control Profile (AVRCP), and Human Interface Device (HID).

HSPs and HFPs work in conjunction with the phone's call function with a headset and a hands-free speaker. HSP can deliver voice calls, and HFP redials, voice dials, and calls. It is applied to a headset for a call or a hands-free system of an automobile by providing a function of remote control such as hang-up. However, since the HSP and HFP are profiles for talking, the sound quality is only 64 kbit / s and mono is inappropriate for the music playback profile.

A2DP is a Bluetooth profile that supports stereo audio. Bluetooth headset for listening to music and host device support A2DP by default. AVRCP supports the adjustment of music playback, such as playback, pause, next song, previous song, as HFP supports the operation of the call function.

The A2DP is designed to deliver two-channel stereo audio in one direction and allows playback of music on MP3 players or smartphones via a Bluetooth headset or earphones. Unlike the HSP and HFP profiles used for phone calls, the A2DP profile technology offers advanced stereo sound quality, which is a step up from AVRCP, the first profile to provide conventional stereo sound quality, providing the best features for listening to music have. In addition, there is no delay in the sound transmission between the pair of earbuds 241, so there is no problem that sound provided from both sides is deviated.

The HID profile is a peripheral communication device and a Bluetooth communication profile capable of receiving a user's input or output, and is applied to an operating device such as a mouse, a keyboard, and a controller. It is implemented in a format similar to USB and uses wireless keyboard, wireless mouse, wireless game controller, etc. using HID profile.

It is possible to activate the mute function of the portable acoustic device 200 when the host terminal 100 is in a situation where it should be temporarily stopped during a telephone conversation or music reproduction. The mute function can be activated by pressing the fourth key 2714 for the mute function as described above.

If the mute function is activated and then immediately released, there is no problem. However, if the long time mute function is activated, since the multimedia is continuously played back on the host terminal 100, There is a problem that the other party has to wait. Also, there is a problem that the power of the host device and portable audio equipment 200 is discharged.

In order to solve the above problem, a user can periodically notify a user of vibration or sound by notifying a user of a continuous mute state. If the user keeps a predetermined period of time (for example, 20 seconds) Send a message asking you to wait a moment. If the mute operation is not canceled for more than a predetermined time (for example, one minute), it is possible to transmit the signal to the host terminal 100 so as to end the reproduction of the multimedia or terminate the telephone call in the call.

In particular, when a call is being made, a control signal is transmitted to the host terminal 100 so that the caller will either call the other party at the end or send a message asking to call again at the end so that the other party will not wait for the call or end the call unpleasantly can do. However, when the predetermined time (for example, 30 seconds) has elapsed, multimedia playback may be terminated immediately or a call may be terminated without an intermediate step.

12 is a view for explaining a method of operating the volume control wheel of the portable acoustic device 200 according to an embodiment of the present invention. The portable acoustic apparatus of the present invention has both a speaker mode and an earbud mode, so that the range of the adjustable volume in the speaker mode and the range of the volume that can be adjusted in the earbud mode are different. The loudspeaker mode can be further subdivided so that the volume of the maximum volume is larger than that of the earbud so that it can be more finely tuned. In other words, the volume can be adjusted based on different tables in the earbud mode and the speaker mode.

The volume control of the present invention is adjustable using the wheel-shaped fourth key 2714, and the volume is adjusted according to the rotational angular velocity. However, if the user wants to adjust the volume to a large extent, it is necessary to turn the wheel a lot. If you can adjust from 0dB to 32dB in 1dB step by step, you have to go through 32 steps to adjust from low to maximum sound. However, there is a problem that it is impossible to adjust the volume by adjusting the amplitude to a large level such as 3 dB or 5 dB in one step.

Therefore, the volume control of the present invention can be controlled so that the volume of the volume that can be adjusted for each step is different according to the rotation speed of the wheel, in order to adjust the volume of the sound and change the volume quickly when necessary. If you rotate the wheel slowly, it will be divided into 32 steps by 1dB per step, but if the wheel speed is fast, you can increase the volume control by 2dB or 4dB per step, so you can reach the maximum volume with only 16 steps or 8 steps .

In this case, the speaker mode and the earbud mode are different in the maximum volume. Therefore, the speaker mode and the earbud mode can be adjusted in a more subdivided stage in the speaker mode in fine adjustment, Adjustment steps can be set differently.

FIG. 13 is a diagram for explaining an example of a volume adjusting method in the first mode and the second mode. The numerical values shown in Fig. 13 are illustrative and the steps may be further subdivided or the amount of change may be set differently depending on the rotation speed. Earbud mode can adjust the volume from 0 ~ 16dB. If you can adjust the volume from 0 ~ 32dB in speaker mode, you can set 1dB per step basically. You can adjust the volume step by step.

When turning the wheel slowly (1 lap / second), adjust the volume to the default setting, but turn the wheel faster if you want to adjust the volume as described above. For example, if you rotate at a speed of 3 or more times per second, you can adjust the overall volume in 8 steps by adjusting 2 dB per step in the first mode, and adjust the overall volume in steps of 3 dB per second in the second mode. You can adjust the volume.

If you rotate more than 5 times per second faster than this, you can adjust the overall volume by 5 steps by adjusting 3 dB per step in the 1st mode. In the 2nd mode, you can adjust it by 5 dB per step, You can adjust the volume. If the fourth key 2714 is rotated at a speed of 10 revolutions per second, the overall volume can be adjusted in about 3 steps by adjusting 5 dB per step in the first mode. In the second mode, You can adjust the overall volume.

In other words, the volume can be adjusted quickly or finely by varying the magnitude of the volume to be controlled per step according to the angular velocity of the fourth key 2714, thereby enhancing the user's convenience.

FIG. 14 is a view for explaining a method for adjusting the volume when switching modes between the speakers 246 and 247 and the ear bud 241 of the portable audio player 200 according to an embodiment of the present invention. There is a difference in volume between the speakers 246 and 247 and the earbud 241. The volume of the earbuds 241 used by the user in the ear can be set smaller than the volume of the speakers 246 and 247. In the first mode and the second mode, You can set the volume control.

It is possible to switch from the first mode (earbud mode) to the second mode (speaker mode) or to switch from the second mode to the first mode by using the mode changeover switch. When the mode is switched from the second mode to the first mode, the speakers 246 and 247 do not directly output sound to the ear, but when output through the ear bud 241 suddenly a large sound is directly output to the ear, The mode is changed to the first mode and the reference volume is switched.

On the contrary, when switching from the first mode to the second mode, if the sound is being output in the first mode at a volume equal to or greater than the reference volume so that a sudden large volume is not output to the speakers 246 and 247, Can be switched and output.

FIG. 15 is a diagram illustrating a method of performing a conference call using four speakers 246 and 247 of a portable audio device 200 according to an embodiment of the present invention. In the case of a conference call, there is a problem that it is difficult to distinguish the other party because the conference is conducted with several parties. In order to solve the above problem, different speakers 246 and 247 may output voices according to the other party so as to distinguish the other party by giving directions.

Since four speakers 246a, 246b, 247a, and 247b are used in the present invention, it is possible to control the audio output for each user from four speakers 246a, 246b, 247a, and 247b, You can combine the two speakers to control the additional voices added in the other direction.

In order to distinguish the other party, the host terminal 100 may include a delimiter in each voice of the other party, and may transmit the delimiter to each voice signal through the application installed in the host terminal 100, Can be controlled.

The delimiter can be assigned to the other party according to the group of the other party (for example, company, rank, etc.), and the user can designate the delimiter in the application and select the speaker to be transmitted. If the voices are similar or the first person is included, it is possible to solve the problem that is difficult to distinguish among the various parties.

Since the portable acoustic apparatus 200 includes both the speakers 246 and 247 and the ear bud 241, the portable acoustic apparatus 200 can diversify a method of informing the user when a specific event occurs. In the alarm system, which simply informs the vibration through the vibration module, the user can notify the user through the speaker. In case of an important telephone, if the other party is set, a call is made to the set party (number), or if the character or the like is turned on, it can be adjusted so as not to be notified to the user through the speakers 246 and 247. At this time, a notification sound can be sent to the speakers 246 and 247 irrespective of the setting of the mode switch 2717. It is possible to transmit the name of the other party to the notification sound with the speakers 246 and 247, and to confirm the other party without the host terminal 100.

In addition, different notification methods can be used depending on the type of event. The second speaker 247 can provide vibration as well as sound, so that the second speaker 247 can be utilized to provide a notification to the user on behalf of the vibration motor. Since the second speaker 247 is located on the left and right sides, the character can be notified to the user by using the speaker 247a on one side, and the alarm such as the advertisement of the application on the other side by using the other speaker 247b.

16 is a diagram for explaining a communication method of the portable acoustic device 200 and the host terminal 100 according to an embodiment of the present invention. As described above, the portable audio device 200 of the present invention can make a telephone call in the HFP mode and output multimedia sound in the A2DP mode.

When the microphone 260 and the speakers 246b and 247b are too close to each other in transmitting a sound in a speaker mode during a call, the voice of the other party transmitted from the speakers 246b and 247b is directly input to the microphone 260 Echo phenomenon may occur. In order to prevent the echo phenomenon, the portable acoustic apparatus 200 of the present invention does not output the voice of the other party in the speaker 246b, 247b mounted on the housing 220 where the microphone 260 is located, It is possible to control so that the voice of the other party is output from the mounted speakers 246a and 247a.

Multimedia can be output through the speakers 246b and 247b which are not used during a call. It is possible to transmit a background music or a background sound to the other party during a call so that various situations can be produced. Multimedia receives data by the A2DP method, and the telephone transmits and receives data by the HFP method, so that data can be simultaneously transmitted and received by the respective methods, so that the call and the multimedia playback can be simultaneously performed.

In addition, when simultaneous interpretation is possible through a mobile terminal having a translation function, the portable audio-visual device 200 can translate the voice of the other party and the voice of the user using the two speakers. At this time, contents interpreted by the other party's voice are outputted through the left speakers 246a and 247a, and contents interpreted by the user's voice are outputted through the right speakers 246b and 247b, The contents can be output simultaneously, so that the conversation can be controlled without interruption.

The portable acoustic device 200 according to the present invention can provide a 3D stereo sound by providing a speaker module oriented in another direction, and in particular, the second speaker 247 facing the user's body transmits vibrations as well as sound, You can deliver a sound.

In addition, it is possible to drive a plurality of speakers individually to output directional sound, and it is possible to improve the quality of sound input to the microphone 260 without affecting the microphone 260.

The foregoing detailed description should not be construed in all aspects as limiting and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

200: portable sound device 210: band
215: Shape memory alloy
220: housing 221: upper case
222: Lower case 224:
225: Earbud holder 225a: Cable hole
226: first hole 227: second hole
228: speaker seating rib 240: sound output section
241: ear bud 245: acoustic cable
246: first speaker 247: second speaker
250: rotation module 260: microphone
270: user input unit 275: sensing unit
280: control unit 281: main board
285: wireless communication unit 290: power supply unit
291: Battery

Claims (15)

A wearable body of the user;
A first hole formed on the upper side of the main body;
A second hole formed on the lower side of the main body and facing the user's body when worn by the user;
A speaker including a first speaker through which sound is output through the first hole and a second speaker through which sound is output through the first hole;
A wireless communication unit mounted on the main body and connected to the host terminal to transmit and receive data; And
Further comprising a controller for controlling the first speaker and the second speaker based on data received from the wireless communication unit. The method according to claim 1,
An acoustic cable connected to the body;
An earbud defective at an end of the acoustic cable to transmit sound; And
Further comprising a sound mode switch for selecting one of a first mode for outputting data received through the wireless communication unit through the ear bud and a second mode for outputting the data through the speaker. 3. The method of claim 2,
Wherein,
Wherein when the sound output through the earbud or the speaker is greater than or equal to a reference sound volume, the controller outputs the sound volume to a specified volume when the mode switch of the sound mode switch is detected. 3. The method of claim 2,
Further comprising a volume key for adjusting the volume of the sound output from the earbud or the speaker,
Wherein,
Wherein the sound volume range adjustable by the volume button and the volume adjust the volume of the earbud and the speaker such that the sound volume is different in the first mode and the second mode. 3. The method of claim 2,
Wherein the control unit, when receiving the event occurrence information designated through the wireless communication unit,
And outputs sound through the speaker regardless of the state of the mode switch. The method according to claim 1,
Further comprising a wheel-shaped volume key for adjusting the volume of the sound output from the speaker,
Wherein the control unit adjusts the amount of change of the volume according to the rotation speed of the volume key. The method according to claim 6,
If the rotational speed of the volume key is fast, the magnitude of the volume changing per unit angle of rotation is larger,
Wherein when the rotation speed of the volume key is slow, the magnitude of the volume change per unit angle of rotation is smaller. The method according to claim 1,
Wherein,
And outputs sound through one of the first speaker and the second speaker according to the type of the event when the event occurrence information is received through the wireless communication unit. The method according to claim 1,
The body
A first housing and a second housing which are respectively located on the right and left sides of the user's neck when worn by the user and in which the first speaker and the second speaker are mounted; And
And a band portion connecting the pair of housings,
Wherein when the user wears the main body, the first hole is positioned behind the second hole. 10. The method of claim 9,
The control unit
Wherein the controller outputs the received data through a speaker located in a direction corresponding to the direction information among the plurality of speakers when the data received through the wireless communication unit includes direction information. 10. The method of claim 9,
Further comprising a microphone located in said first housing,
Wherein when the sound is input through the microphone, sound is output to the speaker located in the second housing, and the speaker located in the first housing is inactivated. 12. The method of claim 11,
The wireless communication unit is capable of wireless communication simultaneously in the A2DP and HFP mode,
Wherein the control unit outputs the sound designated through the speaker located in the second housing. The method according to claim 1,
And a mute key for stopping the output sound,
Wherein the control unit sends a signal to the host terminal to stop the music being played or to terminate the phone call when the mute key is activated and the mute state is not released within a predetermined time. 14. The method of claim 13,
And when the call is terminated, transmitting a voice message to the calling party. The method according to claim 1,
Wherein the wireless communication unit is connected to a wireless communication unit of the slave sound equipment and transmits sound data received from the host equipment,
Wherein the control unit synchronizes and outputs the sound output through the speaker of the portable sound device and the sound output from the slave sound device at the same time.

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