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WO2012053974A2 - Dispositif de lecture vocale portable - Google Patents

Dispositif de lecture vocale portable Download PDF

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Publication number
WO2012053974A2
WO2012053974A2 PCT/SG2011/000307 SG2011000307W WO2012053974A2 WO 2012053974 A2 WO2012053974 A2 WO 2012053974A2 SG 2011000307 W SG2011000307 W SG 2011000307W WO 2012053974 A2 WO2012053974 A2 WO 2012053974A2
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WO
WIPO (PCT)
Prior art keywords
band4
music
band
voice
media player
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SG2011/000307
Other languages
English (en)
Other versions
WO2012053974A3 (fr
Inventor
Poh Chin Soon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PENG SIM TAY
Original Assignee
PENG SIM TAY
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PENG SIM TAY filed Critical PENG SIM TAY
Publication of WO2012053974A2 publication Critical patent/WO2012053974A2/fr
Publication of WO2012053974A3 publication Critical patent/WO2012053974A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/36—Accompaniment arrangements
    • G10H1/361—Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems

Definitions

  • the present invention relates to a wearable voice playback device.
  • the invention relates to a self-pow ered microphone/earphone device for singing along with a music/song that is being played on an external media device yet allowing a user to hear one's own voice.
  • Conventional earphones and headphones are passive devices that allow one to listen to songs and music being played, for example, on an audio and/or video device or musical instrument. Such earphones/headphones do not allow a listener to participate by singing along and hear oneself through the earphones/headphones.
  • a karaoke microphone allows one to sing along with recorded songs but this requires a karaoke set, which is generally big and is not meant to be portable.
  • a recording studio is too expensive for most people to use, and access is usually restricted to artistes.
  • Conventional karaoke microphones are generally big and has a length of about 250 mm. There is enough space inside each of these conventional karaoke microphones to accommodate a dedicated karaoke chip, such as Toshiba TC9444F, which has a footprint of about 20 mm x 20 mm.
  • the personal voice playback device allows one to sing along with music/song and hear one's own voice through the device.
  • the personal voice playback device allows one to record one's singing through a mixer box and store them in an audio library.
  • this personal voice playback device is wearable and fashionable. Desirably, it is universally connectable with a wide range/model of media players. Summary
  • the present invention provides an audio jack that enables a voice playback device to be plugged into most media players and allo s a user to hear own voice as user sings along with music/song being played on an external media player.
  • the voice playback device has a microcontroller, microphone, earphones, battery, and so on.
  • the audio jacks allows a group of users to plug into for group singing, teleconferencing, language learning, and so on. Whilst a 3.5 mm audio jack has been exemplified, it is possible to use other sizes of audio jacks or wireless connection between the self-powered voice playback device and the media player/mixer box.
  • the present invention provides a wearable voice playback device for use with a music/song media player, which has a 3-band audio output socket, said voice playback device comprising: a housing, which encases a microcontroller, a microphone and a battery, with said microphone and batten' being connected separately to said microcontroller; a pair of ear-pieces extending from said housing; and a 4-band audio jack extending from said housing, with said 4-band audio jack being connectable with said 3- band audio socket of said music/song media player, wherein a band4 of said 4-band audio jack is controlled by a band4 control switch; whereby, when said microcontroller is turned on, said wearable voice playback device allows a user to listen to both own voice and music/song as user sings along into said microphone.
  • the user's own voice is delayed between about 100 and about 150 milliseconds after said music/song from said media player to achieve an echo effect.
  • the voice playback device further comprises a mixer box having multiple 4-band audio sockets for connection with said 4-band audio jack.
  • the mixer box may comprises an audio chip to allow combined voice signal from said microphone and music/song to be recorded and stored into a memory device.
  • the present invention provides a voice playback system including a user singing into a microphone connected to a mobile smartphone, said system comprising: converting an analog signal from said microphone into a digital voice signal; adding a time delay of between about 100 and about 150 milliseconds to said digital voice signal before converting it to an analog signal and mixing it with a music/song playback signal from said mobile smartphone via a 4-band audio jack; and amplifying said mixed signal and reproducing it into sound; wherein said analog-to-digital conversion, mixing and amplification are carried out in a general purpose system-on-chip microcontroller.
  • the present invention provides a voice playback kit comprising: a wearable housing, which encases a microcontroller, a microphone and a battery, with said microphone and battery being connected separately to said microcontroller; a pair of ear-pieces extending from said housing; and a 4-band audio jack extending from said housing, with said 4-band audio jack being connectable with an external music/song media player, wherein a band4 of said 4-band audio jack is controlled by a band4 control switch; whereby, when said microcontroller is turned on, said wearable voice playback device allows a user to listen to both own voice and music/song as user sings along into said microphone.
  • the voice playback kit comprises a mixer box and a battery charger.
  • the present invention provides a method of controlling a band4 function of a 4-band jack according to its connection to a music/song media player, a mixer box or a charger cable, said method comprising: sending a voltage signal from said music/song media player, mixer box or charger cable to said band4; sending said voltage signal to a comparator; upon said comparator detecting said voltage signal, said comparator outputting a band4 control signal; and turning on or off a band4 control switch in response to said band4 signal for said 4-band jack to function with said music/song media player, mixer box or charger cable.
  • said band4 control switch comprises a NMOS field effect transistor (FET); in another embodiment, said band4 control switch comprises first and second NMOS FETs, with said band4 control signal being connected to a gate of said first NMOS FET and a drain of said second NMOS FET.
  • FET NMOS field effect transistor
  • the present invention provides a method of controlling a band4 function of a 4-band jack according to its connection to a music/song media player, a mixer box or a charger cable, said method comprising: monitoring a voltage across a pull- up resistor at a voice-in-out path; outputting a band4 control signal; and turning on or off a band4 control switch in response to said band4 signal for said 4-band jack to function with said music/song media player, mixer box or charger cable.
  • said band4 control switch comprises a NMOS field effect transistor (FET); in another embodiment, said band4 control switch comprises first and second NMOS FETs, with said band4 control signal being connected to a gate of said first NMOS FET and a drain of said second NMOS FET.
  • FET NMOS field effect transistor
  • FIG. 1 illustrates a wearable voice playback device according to an embodiment of the present invention
  • FIG. 2 illustrates a wearable voice playback device according to another embodiment of the present invention
  • FIG. 3 illustrates a wearable voice playback device according to another embodiment of the present invention
  • FIG. 4 illustrates a mixer box for use with the voice playback device shown in FIG. 1 , 2 or 3 according to another embodiment of the present invention
  • FIG. 5A illustrates functional blocks of the wearable voice playback device shown in FIG. 1
  • FIG. 5B illustrates the functional blocks of the wearable voice playback device shown in FIG. 2
  • FIGs. 5C and 5D illustrate two circuit implementations of the voice playback device according to other embodiments of the present invention
  • FIG. 6A illustrates a 4-band audio jack for use with the wearable voice playback device employing the circuit shown in FIG. 5C
  • FIG. 6B illustrates another 4-band audio jack for use with the wearable voice playback device
  • FIG. 6C illustrates a 4-band audio jack for use with the wearable voice playback device employing the microcontroller shown in FIG. 5D
  • FIG. 7 A illustrates a circuit diagTam of the mixer box shown in FIG. 4 whilst FIG. 7B illustrates the use of an audio chip in the mixer box according to yet another embodiment of the present invention.
  • FIGs. 8A-8B illustrate two types of batten' charging adapters for use with the above wearable voice playback devices.
  • FIG. 1 shows a wearable voice playback device (VPD) according to an embodiment of the present invention.
  • the wearable VPD 100 is used with a music/song media player 10, which has a conventional 3.5 mm, 3-band audio socket.
  • the music/song media player 10 is a portable and personal device such as a smartphone, mp3/mp4 player, ebook and computer.
  • the wearable VPD 100 includes a housing 110. a 3.5mm, 4-band audio jack 120 extending from a rear end 1 11 of the housing 1 10 and two earphones 130 extending from a front end 1 12 of the housing 1 10.
  • the housing 1 10 is generally elongate and has a size of substantially about 13 mm diameter and about 70 mm long.
  • the front end 1 12 of the housing has apertures 1 14 through a thickness of the housing 1 10 for one's voice to reach a microphone 150 disposed inside the front end of the housing 1 10.
  • Inside the rear end 11 1 of the housing is a rechargeable battery 160, which supplies power to a programmable system-on-chip (PSoc) microcontroller 170; preferably, the rechargeable battery 160 is a lithium polymer type.
  • PSoc programmable system-on-chip
  • components inside the housing 1 10 are insert molded so that there are no external switches on the housing 1 10.
  • the housing 1 10 is polygonal or oblong in cross-section.
  • FIG. 2 shows a wearable voice playback device (VPD) 100a according to another embodiment of the present invention.
  • Wearable VPD 100a is functionally similar to the above VPD 100 except that the housing 1 10a has a different form factor and has touch sensors 1 16, 1 18 on the housing 1 10a. These touch sensors 1 16, 1 18 are provided to adjust, respectively, volume of the microphone 150 and echo or reverberation of the VPD's output signals. Each touch sensor 1 16, 1 18 comes in a pair, with one being operable to increase the relevant effect and the other to effect its decrease. In another embodiment, it is possible that optoelectronic sensors are used to control volume of the microphone and echo/ reverberation effect.
  • FIG. 3 shows a wearable voice playback device (VPD) 100b according to another embodiment of the present invention.
  • the VPD 100b is configured with a housing 1 10b, an over-the-ears headphone, with an adjustable arm holding a microphone 150 at its end and a 3.5 mm audio jack 120 for connection to a music/song media player 10.
  • FIG. 4 shows the above wearable VPD 100, 100a, 100b being configured into a mobile karaoke system 200.
  • the karaoke system 200 includes a mixer box 210.
  • the mixer box 210 allows multiple VPDs and a music/song media player 10 to be connected thereto for group singing, with the music/song media 10 playing a song and displaying the lyrics of the song.
  • the mixer box 210 has a plurality of 3.5 mm 4-bands audio sockets 214 for connection with the wearable voice playback devices 100, 100a, 100b and the media player 10, speaker terminals 216 and a power switch 15.
  • the audio sockets 214 transmit voice-out and voice-in signals via the audio jacks 120 from the wearable VPDs 100, 100a, 100b of each participant and music/song from the media player 10.
  • the voice-out signals from the wearable VPDs are combined with the audio signals from the media player in the mixer box 210 (via summing resistor 260 shown in FIG. 7A) before the combined signals are transformed back into sound through speakers 20 connected to the speaker terminals 216.
  • mixer box 210 has an audio chip 710 (see FIGs. 7A and 7B) that allows a user to record the output signals 270, 271 from the mixer 210 and store the recordings in a memory unit, such as an SD card 720 (see FIG. 7B).
  • the audio chip 710 provides a USB connection 730 so that music/song can be transferred to the mixer box 210 from another external source, such as, a computer.
  • the audio chip 710 provides a LCD display 740 and a key pad 750.
  • the LCD display 740 and key pad 750 allow a user to select music/song from another music/song source, such as an internal source via the audio chip 710 and enabled through a music source select analog switch 220 (see FIG. 7 A).
  • a wireless transceiver is built into each VPD 100,etc and the mixer box 210; such a VPD can then communicate remotely with the mixer box 210, and this allows a user more freedom to move about within its wireless range.
  • the media player 10 communicates wirelessly with the mixer box 210; in addition, the mixer box 210 may output its audio signals wirelessly to the speakers 20.
  • the mixer box 210 is built into a box that houses the speakers 20.
  • FIG. 5 A shows the functional blocks of the VPD 100, 100b of the present invention
  • FIG. 5B shows that of VPD 100a
  • the housing 110, 110a, 110b of the VPD 100, 100a, 100b has a programmable system-on-chip (PSoC) microcontroller 170.
  • the micro-controller 170 is equipped with a plurality of analog and digital blocks, general purpose input and output (GPIO) terminals, a sleep timer and a plurality of digital interfaces.
  • the analog and digital blocks allow one to configure modules like analog-to-digital converters (ADC), digital-to-analog converters (DAC), voltage comparator, operation amplifier, and so on.
  • ADC analog-to-digital converters
  • DAC digital-to-analog converters
  • voltage comparator operation amplifier, and so on.
  • the digital interfaces allow the VPD 100a to adjust digitally echo delay or reverberation and microphone volume.
  • a suitable micro-controller 170 is supplied by Cypress Semiconductor, such as part number CY8C28445; this chip has a footprint of substantially about 11 mm long and 8 mm width, and it fits snugly within the wearable housing 110, 110a, 110b.
  • FIG. 5B is similar to FIG. 5A, except that FIG. 5B shows the VPD 100a has additional touch sensors 116, 118 on the housing 100a to adjust volume of the microphone output and echo/reverberation.
  • Analog voice signal from the microphone 150 goes through a microphone mixer 152 and is amplified by a preamplifier 172 before it is converted to a digital signal, for example an 8-bit signal, by an analog-to-digital converter 174.
  • the digitised voice signal is then routed through an echo processor 176 (implementation by firmware) and a static random-access-memory (SRAM) 190.
  • the SRAM 190 provides a feed-in delay time to the echo processor 176; a delay time of between about 100 ms and about 150 ms is found to provide effective echo effect for sing along.
  • the SRAM 190 is external to the microcontroller 170; in another embodiment, the SRAM 190 is provided inside the microcontroller 170a.
  • the output from the echo processor 176 is routed to a digital-to-analog converter (DAC) 178 and low pass filter 179 before it is sent to the microphone mixer 152.
  • DAC 178 the digital blocks are used to create pulsed width modulation (PWM) output using the PWM duty cycle from the ADC 174 to create reverberation effect.
  • PWM pulsed width modulation
  • the pre-amplified voice and echo/reverberation signals from the microphone mixer 152 ie.
  • microphone-out or voice-out signal together with the left and right music signals from the external music/song media player 10 are controlled by an analog switch 180 directly to the earphones 130 or through a power amplifier 182.
  • the micro-controller 170 bypasses the power amplifier 182 to conserve battery power; in this standby mode, the analog switch 180 switches the music-left and music-right signals to the earphones 130.
  • the micro-controller 170 turns on the power amplifier 182 and the analog switch 180 switches the music-left, music-right and voice-out signals through the power amplifier 182 to the earphones 130.
  • Mixers 181 allow mixing of the music and voice-out signals.
  • VPD 100a has additional touch sensors 116, 1 18 to adjust, respectively, the volume of the microphone and echo delay time in the echo processor 176. Also connected after the preamplifier 172 is a connection to a voltage comparator 195. A low voltage level detect signal 620 from the voice in/out path (i.e. band 4) of the audio jack 120 is connected to the microprocessor 170. for it to be fed to the voltage comparator 195 and a band4 control signal 625 is then outputted from the microprocessor 170.
  • FIG. 5C shows a circuit implementation of the system shown in FIGs. 5A and 5B using a Cypress microcontroller.
  • FIG. 5D shows a circuit implementation using a Freescale microcontroller.
  • the microphone 150 is activated by a double or triple tap on the microphone 150 and the microcontroller 170 is woken up from sleep by sudden signal input from the microphone 150.
  • the analog switch 180 turns off the microcontroller 170, power amplifier 182 and all active components; this feature helps to conserve battery power and gives the wearable VPD 100, 100a, 100b a relatively long batten' operating life of about 5 hours and a standby life of about 50 hours to about 150 hours depending on the microprocessor 170, 170a that is used.
  • FIG. 6A shows the audio jack 120 for use with the above wearable VPD 100, 100a, 100b according to another embodiment of the present invention.
  • the audio jack 120 has four bands.
  • the audio jack 120 is connectable with the conventional 3.5 mm 3-band audio socket of the external media player 10 and the 3.5 mm 4-band audio socket of the mixer box 210 or charger cable 810.
  • bands 1 and 2 are connectable respectively to the music left and right output channels of the media player 10, whilst band 3 is connected to ground.
  • the use of band 4 is controlled by a band4 control switch 610 via the voltage level detect 620 path to the microcontroller 170.
  • the band4 control switch 610 is a transistor 610, such as, an NMOS field effect transistor. As shown in FIGs. 5 A and 5B. the comparator 195 detects the voltage of the level detect 620 and the microcontroller 170 outputs a band4 control signal 625 to control the transistor 610. For example, when the audio jack 120 is connected to the music player 10, 0V is sent to the microcontroller 170 and the band4 control signal 625 is turned high to turn on the transistor 610; as a result, band 4 is pulled to ground, and the audio jack 120 accepts only music input signals, i.e. audio jack 120 now behaves like a conventional 3-band audio jack.
  • FIG. 6B shows the audio jack 120 for use with the wearable VPD 100, 100a, 100b according to another embodiment of the present invention.
  • the band4 control signal 625 controls a band4 control switch 610. which comprises two transistors 610a, 610b, such as NMOS field effect transistors (FETs).
  • FETs NMOS field effect transistors
  • FIG. 6C shows the audio jack 120 for use with the above wearable VPD 100, 100a, 100b using the microcontroller 170a shown in FIG. 5D according to yet another embodiment of the present invention.
  • a pull up resistor 650 is configured inside the micro-controller 170a at the voice-in-out path 630 and the voltage across the pull up resistor 650 is monitored and converted by an analog-to-digital converter (ADC) 660 (at pin 23 as shown in FIG. 5D).
  • ADC analog-to-digital converter
  • the voice-in-out path 630 sees low resistance and low capacitance at the media player 10, and the charging voltage across the pull up resistor 650 reaches a low level, as monitored at pin 23 after about 1 second; the voltage level is then converted by the ADC 660 into a low signal level and the micro-controller 170a then turns the band4 control signal 625 high.
  • transistor 610a is turned on and band 4 is pulled to ground and the audio jack 120 accepts only music input signals from the media player 10.
  • the voice-in-out path 630 sees high resistance and the charging voltage across the pull up resistor 650 reaches a high level, as monitored at pin 23 after about 1 second; this high voltage level is then converted by the ADC 660 into a high signal level and the microcontroller 170a then turns the band4 control signal 625 low.
  • the transistor 610b is turned on. As a result transistor 610a is turned off and and the charger voltage appears at the path 640 for charging the battery 160.
  • the voice-in-out path 630 sees high resistance in the mixer box 210 and the charging voltage across the pull up resistor 650 reaches a high voltage level; in response the micro-controller 170a turns the band4 control signal 625 low; as a result, transistor 610a is turned off and band 4 is disconnected from the ground, and the voice-in-out path 630 between the mixer box 210 and the media player 10 is made.
  • resistors 260 sum up voice signals from the voice-in-out paths and the combined voice signals is outputted to the speaker 20.
  • FIG. 7 A shows an implementation circuit of the mixer box 210 shown in FIG. 4.
  • the vocal signals path 630 in FIG. 6A and 6B
  • the music source select analog switch 220 is connected to the music-left and music-right signals from the media player 10 to provide for an additional music source to the mixer box 210, such as an internal music source from the audio chip 710 via music-in signals 760, 761.
  • FIG. 7 A also shows the mixer box 210 providing recording audio signals 270, 271 to the audio chip 710.
  • FIG. 8 A shows the battery charger cable 810.
  • the battery charger cable 810 has a typical USB plug linked to a 3.5 mm 4-band audio socket 814.
  • a 5V power (for example, from a USB socket) is supplied to band4 and charger input path 640, with the transistor 610 or 610a being turned off and the capacitor 635 blocking the charger voltage at path 630.
  • FIG. 8B shows an AC adaptor 820 with a typical USB socket for use with the barter ⁇ ' charger cable 810.
  • An advantage of the present invention is that the VPD 100, 100a, 100b is independently powered by the rechargeable battery 160 and with the ubiquitous 3.5 mm audio jack 120, the VPD 100, 100a, 100b can be used with most electrical and electronic music/song media players 10. It is also universally compatible across models of such music/song media players 10. When the microphone 150 is not turned on, the VPD 100, 100a, 100b functions like a conventional earphone.
  • the VPD 100, 100a, 100b of the present invention will enhance the entertainment experience of individual users or group participation in a karaoke environment.
  • the voice playback device 100, 100a, 100b and mixer box 210 of the present invention users will be able to digitally record their voices and singing, and create their own personal karaoke videos with their personal images and messages embedded in the videos; this will be akin to digital storing of conventional photographs and videos.
  • the present invention thus provides the hardware for such vocal singing and/or recording, and it is envisaged that creation and sharing of audio-video contents will gain popularity as media players such as smartphones become more and more prevalent.
  • the VPD 100, 100a, 100b has been described with its use for singing; the feed-in delay time at the echo processor 176 can be adjusted to a low level and the VPD can then be used in schools for users to learn languages or vocal training; alternatively, a selector switch can be provided to enable or bypass the echo processor 176/SRAM 190 with which a user can change according to the use of the VPD.
  • the VPD will make teleconference events more convenient with individuals having their own microphones; in addition, conversations of all the participants can be recorded via the mixer box 210.
  • the VPD can be used to practise or make a presentation with words of the speech being visually displayed on the screen of the media player 10 whilst the microphone 150 of the VPD is used to broadcast the speech.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)

Abstract

La présente invention a trait à un dispositif de lecture vocale portable (VPD) (100, 100a, 100b). Le VPD (100, etc.) est équipé d'un jack d'écoute à 4 bandes (120) qui peut être branché à un lecteur multimédia de musique/chanson (10), d'une boîte de mélangeur (210) ou d'un câble de chargeur (810). Lorsque le jack d'écoute à 4 bandes (120) est branché à un lecteur multimédia de musique/chanson, un microcontrôleur (170, 170a) présent dans le VPD (100, etc.) permet à un signal vocal provenant d'un microphone (150) présent dans le VPD d'être combiné à de la musique/à une chanson provenant du lecteur multimédia (10) et le signal audio combiné est lu au moyen d'écouteurs ou d'un casque d'écoute (130). Lorsque le jack d'écoute à 4 bandes (120) est branché à la boîte de mélangeur (210), la bande 4 transmet un signal d'entrée/de sortie vocal entre le microphone (150) et la boîte de mélangeur (210). Lorsque le jack d'écoute à 4 bandes (120) est branché au câble de chargeur (810), la bande 4 envoie une tension de charge à une batterie (160) qui fournit de l'énergie au microcontrôleur (170, 170a).
PCT/SG2011/000307 2010-10-18 2011-09-08 Dispositif de lecture vocale portable Ceased WO2012053974A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG201007638 2010-10-18
SG201007638-8 2010-10-18

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WO2012053974A2 true WO2012053974A2 (fr) 2012-04-26
WO2012053974A3 WO2012053974A3 (fr) 2012-07-19

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108535585A (zh) * 2018-04-18 2018-09-14 丹阳市精通眼镜技术创新服务中心有限公司 一种光电复合式线盘断线检测眼镜及其制作方法
WO2020093567A1 (fr) * 2018-09-12 2020-05-14 优乐生活（深圳）科技有限公司 Dispositif de karaoké portable personnel
CN112399321A (zh) * 2020-10-09 2021-02-23 深圳市思远半导体有限公司 蓝牙耳机、蓝牙耳机状态监测方法及可读存储介质

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106851476A (zh) * 2016-11-03 2017-06-13 灵感创作室有限公司 一种与麦克风配合使用的音响装置

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Publication number Priority date Publication date Assignee Title
JPH10228288A (ja) * 1996-12-09 1998-08-25 Taito Corp イヤホーン付きカラオケ装置
JP2004117892A (ja) * 2002-09-26 2004-04-15 Clarion Co Ltd 携帯カラオケ用アダプタ
KR100660607B1 (ko) * 2005-04-27 2006-12-21 김봉석 에코기능을 구비한 리모컨
US9215304B2 (en) * 2008-01-14 2015-12-15 Apple Inc. Data store and enhanced features for headset of portable media device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108535585A (zh) * 2018-04-18 2018-09-14 丹阳市精通眼镜技术创新服务中心有限公司 一种光电复合式线盘断线检测眼镜及其制作方法
CN108535585B (zh) * 2018-04-18 2023-05-02 丹阳市精通眼镜技术创新服务中心有限公司 一种光电复合式线盘断线检测眼镜及其制作方法
WO2020093567A1 (fr) * 2018-09-12 2020-05-14 优乐生活（深圳）科技有限公司 Dispositif de karaoké portable personnel
CN112399321A (zh) * 2020-10-09 2021-02-23 深圳市思远半导体有限公司 蓝牙耳机、蓝牙耳机状态监测方法及可读存储介质

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