WO2012145969A1 - 连接装置、耳机天线及耳机 - Google Patents

连接装置、耳机天线及耳机 Download PDF

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Publication number
WO2012145969A1
WO2012145969A1 PCT/CN2011/077224 CN2011077224W WO2012145969A1 WO 2012145969 A1 WO2012145969 A1 WO 2012145969A1 CN 2011077224 W CN2011077224 W CN 2011077224W WO 2012145969 A1 WO2012145969 A1 WO 2012145969A1
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WO
WIPO (PCT)
Prior art keywords
earphone
antenna
interface
signal line
band
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PCT/CN2011/077224
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English (en)
French (fr)
Inventor
杨小明
胡易木
苗永斌
陈勇
Original Assignee
中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012145969A1 publication Critical patent/WO2012145969A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1033—Cables or cables storage, e.g. cable reels
    • 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
    • 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

Definitions

  • the present invention relates to the field of communications, and in particular to a connection device, an earphone antenna, and an earphone.
  • BACKGROUND OF THE INVENTION With the increasing functionality of portable mobile terminals, there are more and more antennas in devices.
  • the antenna mainly has a rod antenna and a built-in antenna.
  • the drawbar antenna is composed of a retractable metal tie rod. Because it belongs to an external antenna, it generally has good performance. However, since it needs to be pulled out for a long time, it is inconvenient to use, and it takes a lot of space after being retracted.
  • a primary object of the present invention is to provide a connection device, an earphone antenna and an earphone to solve at least the above problems.
  • a connection device including: a first interface, a second interface, and an isolation unit, wherein the isolation unit includes a spacer, and the first interface is connected to the second interface by the spacer, wherein the first interface , set to connect the signal line on the plug side of the earphone; the second interface is set to connect the signal line of the speaker side of the earphone; the isolation body is set to transmit the signal of the audio frequency band from the first interface to the second interface, and block The transmission of signals in the antenna band in the signal line between the isolator and the speaker of the earphone.
  • the separator includes: magnetic beads.
  • the isolation unit further includes: a band pass filter, the band pass filter is connected in parallel with the isolator, and the band pass filter has a resonant frequency range of a frequency modulation (FM) band.
  • the impedance of the isolator in the antenna band is greater than or equal to a first threshold, and the main impedance of the audio segment is less than or equal to a second threshold, wherein the first threshold is used to determine a signal line between the speaker capable of blocking the isolator and the earphone
  • the transmission of the signal of the antenna band, the second threshold is used to determine a signal capable of transmitting the audio band from the first interface to the second interface.
  • the first threshold is 1000 ohms and/or the second threshold is 5 ohms.
  • an earphone antenna comprising: the above connecting device, a plug disposed to be connected to the terminal, and a signal line connected to the connecting device and the plug, wherein the signal line is for receiving The signal of the antenna band.
  • the plug is a standard headphone plug or a Universal Serial Bus (USB) headphone plug.
  • an earphone comprising: the above-described earphone antenna, a speaker, and a signal line connected to the earphone antenna and the speaker.
  • the above earphone further includes: a control circuit disposed on a signal line connected to the earphone antenna and the speaker.
  • the connection device includes: a first interface, a second interface, and an isolation unit, the isolation unit includes a spacer, and the first interface is connected to the second interface through the isolation body, wherein the first interface is configured to connect the earphone a signal line on the plug side; a second interface, configured to connect a signal line on the speaker side of the earphone; a spacer, configured to transmit a signal from the audio frequency band of the first interface to the second interface, and block the isolation body from the earphone
  • the transmission of the signal of the antenna band in the signal line between the speakers solves the problem that the space occupied by the antenna in the mobile terminal in the related art is relatively large, which restricts the miniaturization of the mobile terminal, thereby realizing the use of the earphone as the antenna to receive the signal.
  • FIG. 1 is a schematic diagram of a standard earphone according to the related art
  • FIG. 2 is a structural block diagram of a connection device according to an embodiment of the present invention
  • 3 is a structural block diagram of an earphone antenna according to an embodiment of the present invention
  • FIG. 1 is a schematic diagram of a standard earphone according to the related art
  • FIG. 2 is a structural block diagram of a connection device according to an embodiment of the present invention
  • 3 is a structural block diagram of an earphone antenna according to an embodiment of the present invention
  • FIG. 1 is a schematic diagram of a standard earphone according to the related art
  • FIG. 2 is a structural block diagram of a connection device according to an embodiment of the present invention
  • 3 is a structural block diagram of an earphone antenna according to an embodiment of the present invention
  • FIG. 1 is a schematic diagram of a standard earphone according to the related art
  • FIG. 2 is a structural block diagram of a connection device according to an embodiment of the present invention
  • 3
  • FIG. 4 is a structural block diagram of an earphone according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of an earphone antenna according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of a schematic diagram of an earphone antenna connection device according to an embodiment of the present invention
  • FIG. 8 is a connection diagram of an earphone antenna connection device and a headphone signal line according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram of connection of an earphone antenna connecting device and a headphone signal line according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a split earphone antenna according to an embodiment of the present invention
  • FIG. 11 is a schematic diagram of a headset connected to a split earphone antenna according to an embodiment of the present invention.
  • BEST MODE FOR CARRYING OUT THE INVENTION hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.
  • the present embodiment provides a connection device.
  • FIG. 2 is a structural block diagram of a connection device according to an embodiment of the present invention. As shown in FIG. 2, the device includes: a first interface 22, a second interface 24, and an isolation unit 26, which are isolated.
  • the unit 26 includes a spacer 262, and the first interface 22 is connected to the second interface 24 via the spacer 262.
  • the above structure will be described in detail below.
  • the first interface 22 is connected to the spacer 262, and is connected to the signal line of the plug side of the earphone;
  • the second interface 24 is connected to the spacer 262, and is connected to the signal line of the speaker side of the earphone;
  • the spacer 262 is connected to
  • the first interface 22 and the second interface 24 are arranged to transmit a signal from the audio frequency band of the first interface 22 to the second interface 24, and block the signal of the antenna frequency band in the signal line between the isolation body 262 and the speaker of the earphone. Transmission.
  • the isolation body in the connection device isolates the signal of the antenna frequency band, and can flexibly adjust the frequency of the antenna frequency band received by the mobile terminal, thereby realizing the reception of the antenna frequency band signal on the earphone, which is beneficial to the mobile terminal. miniaturization.
  • the separator comprises: a magnetic bead.
  • the isolated antenna signal can be efficiently implemented and the audio signal can be transmitted.
  • the isolation unit further comprises: a band pass filter, the band pass filter is connected in parallel with the isolator, and the resonant frequency range of the band pass filter is a frequency modulation (FM) frequency band.
  • FM frequency modulation
  • the impedance of the isolator in the antenna band is greater than or equal to a first threshold, and the impedance in the audio segment is less than or equal to a second threshold, wherein the first threshold is used to determine a signal between the speaker capable of blocking the isolator and the earphone A transmission of a signal of an antenna band in the line, the second threshold being used to determine a signal capable of transmitting an audio band from the first interface to the second interface.
  • the impedance range of the isolation body is determined, which is advantageous for accurately separating the isolation of the antenna from the antenna frequency band and transmitting the signal of the audio frequency band.
  • the first threshold is 1000 ohms and/or the second threshold is 5 ohms.
  • FIG. 3 is a structural block diagram of an earphone antenna according to an embodiment of the present invention.
  • the method includes: a connecting device 2 of the above embodiment, a plug 32 connected to the terminal, and A signal line 34 is connected to the connection device 2 and the plug 32, wherein the signal line 34 is arranged to receive a signal of the antenna band.
  • the plug is a standard earphone plug or a USB earphone plug.
  • the application scenario of the headset is improved.
  • the present embodiment provides an earphone, and FIG.
  • the method includes: the earphone antenna 4, the speaker 42 and the earphone antenna 4 in the above embodiment.
  • the earphone further includes: a control circuit disposed on a signal line connected to the earphone antenna 4 and the speaker 42.
  • Embodiment 1 This embodiment provides an earphone antenna. This embodiment combines the above embodiments and preferred embodiments thereof.
  • the earphone antenna in this embodiment adds an antenna connection device to an ordinary earphone.
  • the distance between the antenna connecting device and the earphone plug depends on the frequency of the antenna, and the length is generally one quarter of the wavelength.
  • the earphone signal line from the earphone plug to the antenna connection device acts as an antenna radiator and is used as a headphone signal line.
  • the signal line between the antenna connection device and the earphone speaker serves only as a headphone signal line.
  • the function of the antenna connector is to "disconnect" the earphone signal line in the antenna frequency band, so that the earphone signal line acts as an antenna radiator on the antenna frequency, and transmits the earphone signal on the earphone signal frequency band, and the two do not Thousands of disturbances.
  • the antenna connection device in this embodiment needs to “break” the signal line electrical performance in the antenna frequency band, and realize zero impedance or low impedance of the signal line in the audio frequency band to ensure that the audio signal has no distortion. transmission.
  • the antenna connecting device is composed of a printed circuit board (PCB) and a plastic outer casing.
  • the circuit board is an ordinary double-sided copper clad board, and the circuit board comprises a headphone input interface circuit, a main circuit portion and an output interface circuit.
  • the PCB circuit board includes an input interface circuit, which includes at least a left and right channel signal line and a ground signal line.
  • the main circuit portion is connected to the input interface circuit and the output interface circuit, and according to the number of the interface circuits, corresponding passages are provided, and the series magnetic beads are separated on each path, and some filter circuits are combined.
  • capacitance Preferably, the magnetic bead has a large impedance in the antenna frequency band, and the impedance is preferably greater than 1K ohm; preferably, the magnetic bead has a minimum impedance in the audio frequency band, and the impedance is preferably less than 5 ohms.
  • the above filter circuit is a band pass filter having a resonant frequency in the FM band, wherein the inductive device is preferably in the form of a winding with a high Q value.
  • the coupling capacitor and other capacitive components described above are common chip capacitors.
  • the above-mentioned output interface circuit like the input interface circuit, may be in the form of a pad soldering or a pin type, and may also be a headphone holder.
  • the antenna function can be realized by a part composed of the earphone plug, the antenna radiator and the antenna connection device; Plugged into the antenna connection device to realize the antenna and earphone functions, thus realizing the split type of the antenna and the standard earphone, and it is more convenient to use.
  • the antenna earphone has the function of an ordinary earphone, and can function as an FM antenna like a normal earphone, and has another function of a frequency band antenna, which can effectively reduce the size of the mobile terminal.
  • the earphone antenna provided by this embodiment is particularly suitable for use on an audio receiving device. This embodiment provides an earphone.
  • the earphone antenna includes an earphone plug 51, an antenna connecting device 52, an antenna radiator 53, and a headphone signal line. 54.
  • the above-mentioned earphone plug is matched with the earphone interface on the mobile terminal, and is a standard earphone plug, which may be a cylindrical plug as shown in FIG. 1, a USB form plug of a USB earphone, or another form of earphone plug.
  • 6 is a schematic diagram 1 of a headset antenna connection device according to an embodiment of the present invention.
  • FIG. 1 of a headset antenna connection device according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram 2 of a headset antenna connection device according to an embodiment of the present invention.
  • Z1, Z2, Z3, Z4 is a magnetic bead connected in series on the microphone (MIC), left and right channel and ground, ensuring that the antenna band is disconnected, and the audio band is directly connected.
  • the magnetic bead is at least 1K ohm impedance in the antenna band, and in the audio band. Within 5 ohms, the magnetic bead has an impedance of 0 ohms in the audio frequency band.
  • the number of the above-mentioned magnetic beads depends on the number of signal lines of the earphone.
  • the path of the MIC can be omitted, and the magnetic beads and the capacitance on the corresponding path are not required.
  • the capacitance of the above antenna connection device C1, C2, C3? ⁇ 1 Combined capacitance, the value is tens to 100 picofarad;
  • L4 and C4 in the above antenna connection device form a bandpass filter circuit, and the resonant frequency is in the FM band.
  • L4 can use a wound inductor.
  • the antenna radiator described above is composed of a headphone signal line from the earphone plug to the antenna connecting device, and may be a ground line or other signal line, or a combination of a ground line and other signal lines.
  • the above-mentioned earphone signal line is the wire responsible for transmitting the earphone signal, specifically the MIC signal line, the left and right channel signal line and the ground line; the above MIC and earphone control circuit is the MIC circuit on the standard earphone, and the answering and hanging up The circuit, the volume adjustment circuit or their combination circuit; the above-mentioned earphone speaker is an ordinary earphone speaker, which may be an in-ear type or a head-mounted speaker, or may be in other forms.
  • 7 is a schematic diagram 2 of a schematic structure of an earphone antenna connection device according to an embodiment of the present invention. As shown in FIG. 7, a band pass filter is added to each earphone signal line, and the frequency of the filter is an FM band.
  • FIG. 8 is a schematic diagram showing the connection between the earphone antenna connecting device and the earphone signal line according to the embodiment of the present invention.
  • the connection between the antenna connecting device and the earphone may be a welding mode, and the input interface of the antenna connecting device is soldered.
  • the method is connected to the antenna radiator, and the output interface of the antenna connection device is connected to the earphone signal line by soldering.
  • the earphone antenna is integrated as shown in the earphone antenna shown in FIG. 5, and the earphone antenna has an FM band filter, so that the earphone antenna supports the antenna function of the antenna band, and can also serve as an FM.
  • FIG. 9 is a schematic diagram of a connection between an earphone antenna connecting device and a headphone signal line according to an embodiment of the present invention.
  • the antenna connecting device and the earphone may be connected in the form of a soldering and a headphone, and the antenna is connected.
  • the input interface of the device is connected to the antenna radiator by means of soldering, and the output interface of the antenna connection device is connected to the signal line of the earphone through the earphone base.
  • the earphone base is soldered to the PCB of the antenna connection device, and the connection of the signal line is consistent with the definition of the earphone interface.
  • the earphone base is a standard earphone base corresponding to the earphone plug, for example, corresponding to a 3.5 inch column headphone jack, or a 2.5 inch column headphone jack, or a USB interface. Headphones, or other forms of earphones.
  • 10 is a schematic diagram of a split earphone antenna according to an embodiment of the present invention. As shown in FIG. 10, the antenna connecting device uses a headphone socket, and the earphone plug 102, the antenna radiator 104, and the antenna connecting device 106 can be used as an antenna alone. .
  • FIG. 11 is a schematic diagram of an earphone connected to a split earphone antenna according to an embodiment of the present invention. As shown in FIG.
  • a standard earphone (including a mic and earphone control circuit 12_) in the related art as shown in FIG.
  • the earphone speaker 14) is used in combination with the earphone socket inserted into the antenna connection device, the antenna radiator 114 is connected to the earphone plug 112 and the antenna connection device 116, the antenna connection device 116 and the mic and earphone control circuit 118, the mic and the earphone control circuit 118 is connected to the headphone speaker 119.
  • the earphone antenna supports the antenna function of the above antenna band, and can also function as an FM antenna, and of course retains the normal earphone function.
  • the foregoing embodiment provides a connection device, an earphone antenna, and an earphone.
  • CMMB Mobile Multimedia Broadcasting

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)

Abstract

本发明公开了一种连接装置、耳机天线及耳机，该连接装置包括：第一接口、第二接口和隔离单元，隔离单元包括隔离体，第一接口通过隔离体与第二接口连接，其中，第一接口，用于连接耳机的插头侧的信号线；第二接口，用于连接耳机的扬声器侧的信号线；隔离体，用于向第二接口传输来自第一接口的音频频段的信号，且阻断隔离体与耳机的扬声器之间的信号线中的天线频段的信号的传输。通过本发明，实现了耳机接收天线频段信号，实现了移动终端小型化。

Description

连接装置、 耳机天线及耳机 技术领域 本发明涉及通信领域， 具体而言， 涉及一种连接装置、 耳机天线及耳机。 背景技术 随着便携式移动终端的功能越来越多， 设备中的天线也越来越多。 天线主要有拉杆式天线和内置式天线。 拉杆式天线由可伸缩的金属拉杆组 成， 由于属于外置天线， 一般都具有很好的性能， 但是由于需要拉出很长， 使 用起来很不方便， 并且缩回去后需要占用很大的空间。 内置式天线置于移动终 端内部， 由于使用时不需要像拉杆天线一样拉出来， 可以使得移动终端美观、 便携。 天线的空间和波长是成正比例的， 因此移动终端的小型化和功能的齐全艮 难兼顾。 例如， 对于中国移动多媒体广播 （ China Mobile Multimedia Broadcasting, 简称为 CMMB )这种频段很低的功能， 天线所占的空间比较大， 主板上需要较大的净空区， 从而制约了移动终端的小型化。 发明内容 本发明的主要目的在于提供一种连接装置、 耳机天线及耳机， 以至少解决 上述问题。 根据本发明的一个方面， 提供了一种连接装置， 包括： 第一接口、 第二接 口和隔离单元， 隔离单元包括隔离体， 第一接口通过隔离体与第二接口连接， 其中， 第一接口， 设置为连接耳机的插头侧的信号线； 第二接口， 设置为连接 耳机的扬声器侧的信号线； 隔离体， 设置为向第二接口传输来自第一接口的音 频频段的信号， 且阻断隔离体与耳机的扬声器之间的信号线中的天线频段的信 号的传输。 隔离体包括： 磁珠。 隔离单元还包括： 带通滤波器， 带通滤波器与隔离体并联， 带通滤波器的 谐振频率范围为调频 （FM ) 频段。 隔离体在天线频段的阻抗大于或等于第一阈值， 在音频段的主抗小于或等 于第二阈值， 其中， 第一阈值用于确定能够阻断隔离体与耳机的扬声器之间的 信号线中的天线频段的信号的传输， 第二阈值用于确定能够向第二接口传输来 自第一接口的音频频段的信号。 第一阈值为 1000欧姆和 /或第二阈值为 5欧姆。 才艮据本发明的再一方面， 还提供了一种耳机天线， 包括： 上述的连接装置、 设置为与终端连接的插头以及与连接装置和插头连接的信号线， 其中， 信号线 用于接收天线频段的信号。 插头是标准耳机插头或通用串行总线（ Universal Serial Bus, 简称为 USB ) 耳机插头。 根据本发明的另一方面， 还提供了一种耳机， 包括： 上述的耳机天线、 扬 声器以及与耳机天线和扬声器连接的信号线。 上述耳机还包括： 设置在与耳机天线和扬声器连接的信号线上的控制电 路。 通过本发明， 釆用连接装置， 包括： 第一接口、 第二接口和隔离单元， 隔 离单元包括隔离体， 第一接口通过隔离体与第二接口连接， 其中， 第一接口， 设置为连接耳机的插头侧的信号线； 第二接口， 设置为连接耳机的扬声器侧的 信号线； 隔离体， 设置为向第二接口传输来自第一接口的音频频段的信号， 且 阻断隔离体与耳机的扬声器之间的信号线中的天线频段的信号的传输， 解决了 相关技术中移动终端中的天线所占的空间比较大， 制约了移动终端的小型化的 问题， 进而实现了用耳机作为天线接收信号， 达到了实现移动终端的小型化的 效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部 分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的不 当限定。 在附图中： 图 1是根据相关技术的标准耳机的示意图； 图 2是根据本发明实施例的连接装置的结构框图； 图 3是根据本发明实施例的耳机天线的结构框图； 图 4是才艮据本发明实施例的耳机的结构框图； 图 5是根据本发明实施例的耳机天线的示意图； 图 6是根据本发明实施例的耳机天线连接装置的原理示意图一； 图 7是根据本发明实施例的耳机天线连接装置的原理示意图二； 图 8是根据本发明实施例的耳机天线连接装置与耳机信号线的连接示意图
图 9是根据本发明实施例的耳机天线连接装置与耳机信号线的连接示意图
图 10是才艮据本发明实施例的分体耳机天线示意图； 以及 图 11是才艮据本发明实施例的与分体耳机天线连接的耳机示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是， 在不 冲突的情况下， 本申请中的实施例及实施例中的特征可以相互组合。 本实施例提供了一种连接装置， 图 2是根据本发明实施例的连接装置的结 构框图， 如图 2所示， 该装置包括： 第一接口 22、 第二接口 24和隔离单元 26 , 隔离单元 26包括隔离体 262 ,第一接口 22通过隔离体 262与第二接口 24连接， 下面对上述结构进行详细说明。 第一接口 22 , 连接至隔离体 262 , 设置为连接耳机的插头侧的信号线； 第 二接口 24 , 连接至隔离体 262 , 设置为连接耳机的扬声器侧的信号线； 隔离体 262 , 连接至第一接口 22和第二接口 24 , 设置为向第二接口 24传输来自第一 接口 22的音频频段的信号， 且阻断隔离体 262与耳机的扬声器之间的信号线 中的天线频段的信号的传输。 通过上述结构， 连接装置中的隔离体对天线频段的信号进行隔离， 可以灵 活地调整移动终端接收到的天线频段的频率， 从而实现了在耳机上进行天线频 段信号的接收， 有利于移动终端的小型化。 优选地， 隔离体包括： 磁珠。 通过该优选实施例， 可以高效地实现隔离天 线信号并传输音频信号。 优选地， 隔离单元还包括： 带通滤波器， 带通滤波器与隔离体并联， 带通 滤波器的谐振频率范围为调频 （FM ) 频段。 通过该优选实施例， 可以实现在 耳机上接收 FM, 丰富了连接装置的应用。 优选地， 隔离体在天线频段的阻抗大于或等于第一阈值， 在音频段的阻抗 小于或等于第二阈值， 其中， 第一阈值用于确定能够阻断隔离体与耳机的扬声 器之间的信号线中的天线频段的信号的传输， 第二阈值用于确定能够向第二接 口传输来自第一接口的音频频段的信号。 通过该优选实施例， 确定了隔离体的 阻抗范围，有利于准确实现隔离体对天线频段的隔离，和传输音频频段的信号。 优选地， 第一阈值为 1000欧姆和 /或第二阈值为 5欧姆。 通过该优选实施 例， 为实际生产隔离体提供了具体的参数， 使得隔离体的阻抗性能更好。 本实施例提供了一种耳机天线， 图 3是根据本发明实施例的耳机天线的结 构框图， 如图 3所示， 包括： 上述实施例的连接装置 2、 设置为与终端连接的 插头 32以及与连接装置 2和插头 32连接的信号线 34 , 其中， 信号线 34设置 为接收天线频段的信号。 优选地， 插头是标准耳机插头或 USB 耳机插头。 通过该优选实施例， 提 高了耳机的应用场景。 本实施例提供了一种耳机， 图 4是才艮据本发明实施例的耳机的结构框图， 如图 4所示， 包括： 上述实施例中的耳机天线 4、 扬声器 42以及与耳机天线 4 和扬声器 42连接的信号线 44。 优选地， 上述耳机还包括： 设置在与耳机天线 4和扬声器 42连接的信号 线上的控制电路。 下面将结合实例对本发明实施例的实现过程进行详细描述。 实施例一 本实施例提供了一种耳机天线， 本实施例结合了上述实施例及其中的优选 实施方式， 本实施例中的耳机天线在普通的耳机上增加了天线连接装置。 需要说明的是， 天线连接装置与耳机插头的距离取决于天线的频率， 这个 长度一般为波长的四分之一。 从耳机插头到天线连接装置之间的耳机信号线， 充当天线辐射体， 同时作为耳机信号线使用， 天线连接装置到耳机扬声器之间 的信号线只充当耳机信号线。 天线连接器的作用就是将耳机信号线在天线频段 实现电性能上 "断开"， 使耳机信号线在天线频率上作为天线辐射体， 而在耳机 信号频段上传输耳机信号， 并且两者互不千扰。 优选地， 本实施例中的的天线连接装置， 需要在天线频段将信号线电性能 上"断开"， 而在音频频段需实现将信号线的零阻抗或者低阻抗， 保证音频信号 无失真的传输。 该天线连接装置由一块印刷电路板（Printed Circuit Board, 简 称为 PCB )和塑料外壳组成， 电路板为普通的双面覆铜板， 该电路板包含耳机 输入接口电路、 主体电路部分和输出接口电路组成。 优选地， 上述的 PCB电路板中， 包括输入接口电路， 其至少包含左右声道 信号线和地信号线， 根据耳机的不同， 耳机有多少根信号线就留多少个电路输 入接口， 该接口可以是通过焊盘焊接， 也可以是其他插针式连接。 优选地， 上述的 PCB电路板中， 主体电路部分与输入接口电路和输出接口 电路相连，根据接口电路的数量， 留出相应的通路， 每条通路上串联磁珠隔开， 外加一些滤波电路和 合电容。 优选地， 上述的磁珠， 在天线频段具有较大的阻抗， 这个阻抗最好大于 1K 欧姆； 优选地， 上述的磁珠， 在音频频段具有极小的阻抗， 这个阻抗最好小于 5 欧姆， 0欧姆最佳。 上述的滤波电路是谐振频率在 FM频段的带通滤波器， 其中电感器件最好 是用高 Q值的绕线形式。 优选地， 上述的耦合电容和其他电容器件为普通贴片电容。 上述的输出接口电路和输入接口电路一样， 可以是焊盘焊接形式， 也可以 是插针式， 还可以使耳机母座。 需要说明的是， 如果输出接口电路使用耳机母座的形式， 由耳机插头， 天 线辐射体和天线连接装置组成的部分就可以实现天线功能； 也可以将普通耳机 插在天线连接装置上， 实现天线和耳机功能， 这样就实现了天线和标准耳机的 分体式， 使用起来更方便。 通过本实施例， 天线耳机除了具备普通耳机的功能， 可以像普通耳机一样 充当 FM天线外， 还具备了另外一种氐频天线功能， 可以有效减小移动终端的 尺寸。 本实施例提供的耳机天线尤其适合在使用在音频接收装置上。 本实施例提供了一种耳机，图 5是根据本发明实施例的耳机天线的示意图， 如图 5所示， 该耳机天线包括耳机插头 51 , 天线连接装置 52 , 天线辐射体 53 , 耳机信号线 54 , 麦克 （ mic ) 及耳机控制电路 55和耳机扬声器 56组成。 上述的耳机插头， 与移动终端上的耳机接口相匹配， 为标准耳机插头， 可 以是图一所示的圓柱形插头， 也可以是 USB耳机的 USB形式插头， 或者是其 它形式耳机插头。 图 6是根据本发明实施例的耳机天线连接装置的原理示意图一， 图 7是根 据本发明实施例的耳机天线连接装置的原理示意图二， 如图 6和 7所示， Z1 , Z2, Z3 , Z4为串联在麦克 （MIC )、 左右声道和地线上的磁珠， 保证在上述天 线频段断开， 而在音频频段直通， 上述磁珠在上述天线频段至少 1K欧姆阻抗， 而在音频频段 5欧姆以内， 比较优的， 该磁珠在音频频段的阻抗为 0欧姆。 优选地， 上述磁珠的数量取决于耳机的信号线数量， 例如对于不带 MIC 的耳机， 可以不用 MIC这个通路， 相应通路上磁珠和电容也不需要。 上述天线 连接装置中的电容， C1,C2,C3为？^1 合电容， 数值取几十到一百皮法级； 上 述天线连接装置中的 L4和 C4构成带通滤波电路， 谐振频率在 FM频段， 为了 达到良好的效果， L4可以使用绕线电感。 上述的天线辐射体为从耳机插头到天 线连接装置之间的耳机信号线组成， 可以是地线或者其他信号线， 或者地线和 其他信号线的组合。 上述的耳机信号线， 即为负责传输耳机信号的导线， 具体 的为 MIC信号线、 左右声道信号线和地线； 上述的 MIC及耳机控制电路， 为 标准耳机上的 MIC电路、 接听挂断电路、 音量调节电路或者他们的组合电路； 上述的耳机扬声器为普通的耳机用扬声器， 可以是入耳式或者头戴式扬声器， 也可以是其他形式的。 图 7是根据本发明实施例的耳机天线连接装置的原理示意图二， 如图 7所 示， 在每根耳机信号线上都加上一个带通滤波器， 滤波器的频率为 FM频段， 使用此种方式的天线连接装置， 耳机充当 FM天线时会有更好的用户体 -险。 图 8是根据本发明实施例的耳机天线连接装置与耳机信号线的连接示意图 二， 如图 8所示， 上述的天线连接装置与耳机的连接可以是焊接方式， 天线连 接装置输入接口通过焊接的方式与天线辐射体相连， 天线连接装置输出接口通 过焊接方式与耳机信号线相连。 这样， 上述的耳机天线为一个整体， 如图 5中 所示的耳机天线所示， 且该耳机天线中有 FM频段的滤波器， 使得该耳机天线 支持上述天线频段的天线作用， 还可充当 FM天线使用， 同样还保留正常的耳 机功能。 图 9是根据本发明实施例的耳机天线连接装置与耳机信号线的连接示意图 一， 如图 9所示， 上述的天线连接装置与耳机的连接还可以是焊接加耳机母座 的形式， 天线连接装置输入接口通过焊接的方式与天线辐射体相连， 天线连接 装置输出接口通过耳机母座方式与耳机信号线相连。 优选地, 上述的耳机母座焊接在天线连接装置的 PCB板上，信号线的连接 和耳机接口的定义一致。 优选地， 上述的耳机母座是标准的耳机母座， 与耳机插头相对应， 例如可 以是对应于 3.5寸柱状耳机插孔母座， 或者 2.5寸柱状耳机插孔母座， 或者是 USB接口形式的耳机母座， 或者其他形式耳机母座。 图 10是根据本发明实施例的分体耳机天线示意图， 如图 10所示， 上述的 天线连接装置使用耳机母座， 耳机插头 102、 天线辐射体 104和天线连接装置 106本身可以单独作为天线使用。 图 11是才艮据本发明实施例的与分体耳机天线 连接的耳机示意图， 如图 11所示， 将如图 1所示的相关技术中的标准耳机（包 括 mic及耳机控制电路 12_和耳机扬声器 14 ) 插入天线连接装置的耳机母座中 组合起来使用， 天线辐射体 114与耳机插头 112和天线连接装置 116相连接， 天线连接装置 116与 mic及耳机控制电路 118 , mic及耳机控制电路 118与耳机 扬声器 119相连。 组合起来以后的耳机天线， 支持上述天线频段的天线作用， 还可充当 FM天线使用， 当然还保留正常的耳机功能。 通过上述实施例， 提供了一种连接装置、 耳机天线及耳机， 上述实施例 提供的方案可以支持终端实现 FM天线功能， 还能支持终端实现接收天线频 段信号的功能， 特别适合于支持类似于中国移动多媒体广播 （ China Mobile Multimedia Broadcasting, 简称为 CMMB ) 这种功能的移动终端， 在使用耳 机的时候充当了天线的作用， 使用起来更加便捷。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可以 用通用的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布在多 个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行的程序代码 来实现， 从而可以将它们存储在存储装置中由计算装置来执行， 或者将它们分 别制作成各个集成电路模块， 或者将它们中的多个模块或步骤制作成单个集成 电路模块来实现。 这样， 本发明不限制于任何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领 域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的 ^"神和原则 之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之 内。

Claims

权 利 要 求 书
1. 一种连接装置， 包括： 第一接口、 第二接口和隔离单元， 所述隔离单元 包括隔离体， 所述第一接口通过所述隔离体与所述第二接口连接， 其中， 所述第一接口， 设置为连接耳机的插头侧的信号线；
所述第二接口， 设置为连接所述耳机的扬声器侧的信号线； 所述隔离体， 设置为向所述第二接口传输来自所述第一接口的音频 频段的信号， 且阻断所述隔离体与所述耳机的扬声器之间的信号线中的 天线频段的信号的传输。
2. 根据权利要求 1所述的装置， 其中， 所述隔离体包括： 磁珠。
3. 根据权利要求 1所述的装置， 其中， 所述隔离单元还包括：
带通滤波器， 所述带通滤波器与所述隔离体并联， 所述带通滤波器 的谐振频率范围为调频 FM频段。
4. 根据权利要求 1至 3中任一项所述的装置， 其中， 所述隔离体在所述天 线频段的阻抗大于或等于第一阈值， 在所述音频段的阻抗小于或等于第 二阈值， 其中， 所述第一阈值用于确定能够阻断所述隔离体与所述耳机 的扬声器之间的信号线中的天线频段的信号的传输， 所述第二阈值用于 确定能够向所述第二接口传输来自所述第一接口的音频频段的信号。
5. 根据权利要求 4所述的装置， 其中， 所述第一阈值为 1000欧姆和 /或第 二阈值为 5欧姆。
6. —种耳机天线， 包括： 权利要求 1至 5中任一项所述的连接装置、 设置 为与终端连接的插头以及与所述连接装置和所述插头连接的信号线， 其 中， 所述信号线用于接收天线频段的信号。
7. 居权利要求 6所述的耳机天线， 其中， 所述插头是标准耳机插头或通 用串行总线 USB耳机插头。
8. —种耳机， 包括： 权利要求 6所述的耳机天线、 扬声器以及与所述耳机 天线和所述扬声器连接的信号线。 根据权利要求 8所述的耳机， 其中， 还包括： 设置在与所述耳机天线和 所述扬声器连接的信号线上的控制电路。
PCT/CN2011/077224 2011-04-25 2011-07-15 连接装置、耳机天线及耳机 WO2012145969A1 (zh)

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