WO2016165297A1 - 耳机插座及检测耳机是否插入到位的方法 - Google Patents

耳机插座及检测耳机是否插入到位的方法 Download PDF

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Publication number
WO2016165297A1
WO2016165297A1 PCT/CN2015/092102 CN2015092102W WO2016165297A1 WO 2016165297 A1 WO2016165297 A1 WO 2016165297A1 CN 2015092102 W CN2015092102 W CN 2015092102W WO 2016165297 A1 WO2016165297 A1 WO 2016165297A1
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WIPO (PCT)
Prior art keywords
earphone
detecting end
plug
earphone plug
detecting
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PCT/CN2015/092102
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English (en)
French (fr)
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WO2016165297A9 (zh
Inventor
刘浩东
梅伟
朱顺吉
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to BR112016018910A priority Critical patent/BR112016018910A2/pt
Priority to EP15876400.1A priority patent/EP3101908B1/en
Priority to US15/214,010 priority patent/US9820030B2/en
Publication of WO2016165297A1 publication Critical patent/WO2016165297A1/zh
Publication of WO2016165297A9 publication Critical patent/WO2016165297A9/zh

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    • 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
    • H04R1/1041—Mechanical or electronic switches, or control elements
    • 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
    • H04R2420/05—Detection of connection of loudspeakers or headphones to amplifiers

Definitions

  • the present invention relates to the field of electronic technologies, and in particular, to a headphone jack and a method for detecting whether an earphone is inserted into position.
  • the device In existing portable electronic devices, such as cell phones, tablets or media players, the device needs to know the insertion status of the headset, ie whether the headset is plugged into the portable electronic device, and whether it is inserted halfway or fully inserted. After the portable electronic device knows the insertion state of the earphone, the portable electronic device can perform corresponding operations. For example, after knowing that the earphone is inserted, the interface between the media playing software and the headphone driver software is started. In a typical application scenario, insertion detection of headphones is performed by circuitry in a portable electronic device.
  • the earphone plug portion is usually metallic, when the earphone plug is inserted into the earphone socket of the portable electronic device, that is, the earphone hole, the voltage between the two contact points (or pins) of the DET and L on the earphone socket is changed into the detecting earphone.
  • a simplified headphone jack structure is shown in Figure 1. Both the DET contact point and the L contact point have an elastic deformation capability, which can be used to detect whether the earphone is inserted.
  • the L contact point can also be used by the portable electronic device to transmit the left channel to the earphone. signal. There are other contact points in the earphone socket.
  • the R contact point is used by the portable electronic device to transmit the right channel signal to the earphone
  • the GND contact point is used for grounding
  • M is used to transmit the sound generated by the earphone, that is, the microphone signal to the portable.
  • the two contact points of the earphone jacks DET and L may not be electrically connected to each other before the earphones are inserted. Once the earphone plug is inserted into the earphone socket, a short circuit between the DET contact point and the L contact point generates an electrical connection.
  • the voltage at the DET contact point changes, and the circuit electrically connected to the DET contact point recognizes the voltage change and sends a notification signal to the portable
  • the underlying driver software in the electronic device so that the software performs corresponding operations, so that the headset can be used normally by the portable electronic device.
  • a short circuit between the DET contact point and the L contact point on the earphone socket can be maintained when the earphone is not inserted, and the DET contact point and the L contact point become an open circuit after the earphone is inserted. That is, the insertion of the earphone causes the electrical connection to be disconnected. At this time, the electrical characteristics of the DET contact point also change, and the circuit connected to the DET contact point also generates a notification signal based on the voltage change.
  • the software of the portable electronic device may need to further determine whether the current headset is plugged in by a more complex voltage threshold detection scheme, ie, determine if the headset plug is fully inserted into the headset jack.
  • a typical prior art solution for detecting whether an earphone is inserted in place is by detecting a voltage division relationship in a detection circuit in different insertion states.
  • the commonly used earphones include three-stage earphones, American standard earphones (LRGM) and national standard earphones (LRMG).
  • LRGM American standard earphones
  • LRMG national standard earphones
  • Different earphone plugs have different impedances, which may result in the structure of the earphone sockets may not be exactly the same.
  • the connection state of the earphone plug and the earphone socket during the insertion process is very complicated, resulting in many different values in the partial pressure relationship of the DET point. Therefore, the existing method of detecting the voltage division relationship by the circuit to determine whether the earphone is inserted into the bit solution requires complicated circuit hardware design and software state machine design, thereby improving the product realization cost.
  • Embodiments of the present invention provide a headphone jack and a method for detecting whether an earphone is inserted into position, so as to reduce the complexity of the existing scheme of detecting whether the earphone is inserted into position.
  • an embodiment of the present invention provides a headphone jack, including: a sidewall, a bottom, a clamping member on the sidewall, a first detecting end located at the bottom, and a second detecting end located on the sidewall or the bottom, And a membrane switch electrically connected to the second detecting end; wherein the clamping element is configured to clamp the earphone plug when the earphone plug is inserted into the earphone socket; when the earphone plug is not inserted, the The membrane switch is electrically isolated from the first detecting end, and the electrical characteristic between the first detecting end and the second detecting end is a first electrical characteristic; the membrane switch is used when the earphone plug is inserted into position
  • the earphone plug is elastically deformed under pressure and electrically connected to the first detecting end to electrically connect the first detecting end to the second detecting end, and the first detecting end and the second detecting end The electrical characteristic between the two becomes a second electrical characteristic that is used to generate an electrical signal to reflect that the ear
  • the membrane switch includes a conductive layer that can be elastically deformed and an insulating layer that covers the conductive layer; the conductive layer and the first layer The second detecting end is electrically connected, and elastically deforms under the pressure of the earphone plug when the earphone plug is inserted into position, and is electrically connected to the first detecting end; the insulating layer is used for electrically isolating the conductive layer and the earphone plug.
  • the conductive layer is a metal layer.
  • the membrane switch comprises a component that can be elastically deformed and a conductive connector; the conductive connector is electrically connected to the second detecting end; The elastically deformable member is elastically deformed under the pressure of the earphone plug to urge the conductive connector to be electrically connected to the first detecting end.
  • the elastically deformable component uses an insulating material.
  • the elastically deformable component uses a conductive material; the thin film switch further includes a cover in the occurrence An insulating layer on the elastically deformed member, the insulating layer for electrically isolating the elastically deformable member and the earphone plug.
  • the clamping element comprises a clip Holding a plurality of elastic pieces of the earphone plug.
  • the clamping element is further configured to A signal from the headphone jack is transmitted to the headphone jack.
  • the signal is any one of the following: a left channel signal and a right channel signal.
  • the first electrical characteristic is electrically isolated
  • the second electrical characteristic is an electrical connection.
  • the embodiment of the present invention further provides a portable electronic device, comprising the first aspect, or the earphone socket disclosed in any one of the first to ninth possible implementation manners of the first aspect, and a detection circuit; the detection circuit is configured to detect the electrical signal to recognize that the earphone plug is inserted into the earphone socket.
  • the electronic device is a portable electronic device.
  • the embodiment of the present invention further provides a method for detecting whether an earphone is inserted into position, comprising: clamping the earphone plug with a clamping element located on a sidewall of the earphone socket when the earphone plug is inserted into the earphone socket a headphone plug; when the headphone plug is not inserted, the membrane switch in the earphone socket is only electrically connected to the second detecting end located on the side wall or the bottom of the earphone socket, and is avoided from being located at the bottom of the earphone socket
  • the first detecting end is electrically connected, and the electrical characteristic between the first detecting end and the second detecting end is a first electrical characteristic; when the earphone plug is inserted into position, the thin film switch is used in the earphone Elastically deforming under pressure of the plug and electrically connecting with the first detecting end to electrically connect the first detecting end to the second detecting end, and between the first detecting end and the second detecting end Electricity
  • the gas characteristic becomes a second electrical
  • Embodiments of the present invention provide a method for a headphone jack and a method for detecting whether an earphone is inserted into position.
  • a film switch that can be elastically deformed in a headphone jack to connect different detecting ends.
  • an electrical signal for reflecting the insertion of the earphone plug into position is generated, and detection of insertion of the earphone plug into position is achieved.
  • the technical solution provided by the embodiment adopts a mechanical structure switch to realize detection, avoiding the use of a complicated voltage division relationship detecting circuit or detection software, and the technical solution is simple to implement and reduces the implementation cost.
  • FIG. 1 is a schematic diagram of a simplified earphone jack structure provided by the prior art
  • FIG. 2 is a schematic diagram of a simplified earphone socket structure according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a simplified structure of a headphone jack seen along an insertion direction of an earphone according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a brief system for detecting whether an earphone is inserted into position according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a simplified structure of a membrane switch according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a simplified structure of another membrane switch according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a simplified structure of another membrane switch according to an embodiment of the present invention.
  • FIG. 8 is a schematic flow chart of a method for detecting whether an earphone is inserted into position according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a simplified structure of a headphone jack 20 according to an embodiment of the present invention.
  • the earphone jack 20 includes a side wall 21, a bottom portion 22, a clamping member 23 on the side wall 21, a first detecting end 24 at the bottom portion 22, a second detecting end 25 on the side wall 21 or the bottom portion 22, and
  • the membrane switch 26 is electrically connected to the second detecting end 25.
  • the second detecting end 25 is located at the junction of the side wall 21 and the bottom portion 22. It can be understood that the second detecting end 25 can also be located at 21A on the side wall 21 or 22A on the bottom portion 22 in FIG. 2, and thus the embodiment of FIG. 2 or the above should not be construed as limiting the scope of the present invention.
  • the earphone plug can be inserted into the earphone socket 20 in the direction of the arrow A. See Figure 8 for the detection process of whether the specific headphone plug is inserted in place.
  • the clamping member 23 can clamp the earphone plug when the earphone plug is inserted in the A direction.
  • the clamping member 23 may include a first elastic piece 231 and a second elastic piece 232 separated from each other, and the two elastic pieces 231 and 232 jointly clamp the earphone plug to ensure that the earphone plug is inserted into the earphone socket. After 20 will not fall off easily.
  • the clamping element 23 may further comprise other more elastic pieces for achieving better clamping of the inserted earphone plug, thus the clamping element
  • the number of shrapnel included in 23 can be set by a person skilled in the art according to the needs of use.
  • the clamping element 23 can also be a whole, rather than Includes multiple shrapnel. For example, taking the headphone jack 20 and the headphone plug as circular, if the headphone jack 20 is cut off from the broken line B in FIG. 2, the view seen in the headphone insertion direction A can be as shown in FIG.
  • the clamping element 23 is wrapped around the side wall 21 of the earphone socket 20 to effect clamping of the earphone plug, i.e., the clamping element 23 is an annular spring.
  • the one or more elastic pieces included therein can be elastically deformed during the insertion of the earphone plug, and the earphone plug is clamped under the tension of the clamping member 23 itself to realize the earphone.
  • the plug is fixed.
  • the shape of the jack of the earphone socket may be square, triangular or the like in addition to the circular shape.
  • FIG. 3 of the embodiment does not limit the protection scope of the present invention.
  • the earphone plug When the earphone plug is inserted into the earphone socket 20, there are two cases. In the first case, the earphone plug is not fully inserted, ie the earphone plug does not reach the bottom 22 of the earphone socket 20, ie the insertion is not in place. Only when the headphone plug reaches the bottom 22, this insertion is fully inserted, ie inserted into place.
  • the membrane switch 26 is electrically isolated from the first detection terminal 24.
  • the electrical characteristic between the first detecting end 24 and the second detecting end 25 is the first electrical characteristic.
  • the first electrical characteristic can be an electrical connection, ie electrical isolation.
  • the first detection terminal 24 and the second detection terminal 25 are also the two end points of the detection, and the detection terminals 24 and 25 are usually metal ends, that is, two metal pins.
  • the membrane switch 26 is only electrically connected to the second detecting end 25 when the headphone plug is not inserted, and is not electrically connected to the first detecting end 24, so the first detecting end 24 and the second detecting end 25 are open to each other.
  • the membrane switch 26 is elastically deformed (not shown) in the A direction under the pressure of the earphone plug and electrically connected to the first detecting end 24.
  • the first detecting end 24 is electrically connected to the second detecting end 25 under the conduction of the membrane switch 26, and electrical characteristics between the first detecting end 24 and the second detecting end 25 becomes the second electrical characteristic.
  • the second electrical characteristic may be an electrical connection as opposed to the electrically isolated first electrical characteristic. As shown in FIG.
  • the earphone socket 20 in the system diagram provided by an example of the present invention, in the earphone socket 20
  • the first detecting end 24 and the second detecting end 25 are electrically connected after the headphone plug is inserted, such that the connection to the first detecting end 24 and/or the second detecting end 25 is connected to the detecting circuit 40.
  • the detecting circuit 40 can easily detect that the change in the electrical connection relationship between the first detecting end 24 and the second detecting end 25 produces an electrical signal that reflects the insertion of the earphone plug into position in the earphone jack. Specifically, in FIG.
  • a source voltage V can be connected to the detecting circuit 40 through the signal line 42, and the detecting circuit 40 receives the reflected source voltage V through the signal line 42.
  • the source voltage V may be a voltage of 1.8 volts (V)
  • the electrical signal is a voltage signal having a magnitude of 1.8 V, and is detected by the detecting circuit 40.
  • the detecting circuit 40 may be specifically a voltage detecting circuit.
  • the detection circuit 40 of the embodiment of the present invention may be located in an audio and video processing module 43.
  • the audio and video processing module 43 may specifically be a functional unit in one chip or chip.
  • the headphone jack 20 and the audio and video processing module 43 including the detecting circuit 40 may be located in a portable electronic device 45, which may be a cell phone, a media player, or a tablet computer or the like.
  • the solution can be applied not only to portable electronic devices, but also to other types of electronic devices, including servers and fixed stations.
  • the membrane switch 26 includes a conductive layer 261 that is elastically deformable and an insulating layer 262 overlying the conductive layer; the conductive layer 261 and the first layer
  • the second detecting end 25 is electrically connected, and elastically deforms in the A direction under the pressure of the earphone plug and is electrically connected to the first detecting end 24 when the earphone plug is inserted into position.
  • the conductive layer 261 the first detecting end 24 and the second detecting end 25 are electrically connected.
  • the insulating layer 262 is used for electrically isolating the conductive layer 261 and the earphone plug, so that the conductive portion of the earphone plug does not directly contact with the conductive layer 261 for implementing insertion in-position detection, thereby avoiding introducing noise into the earphone.
  • the conductive layer 261 is a metal layer such as an aluminum layer.
  • the membrane switch 26 includes a member 263 that is elastically deformable and a conductive connector 264.
  • the conductive connector 264 is typically electrically conductive
  • the connecting member, the conductive connector 264 can be electrically connected to the second detecting end 25 by wires or other forms.
  • the elastically deformable member 263 is elastically deformed in the A direction under the pressure of the earphone plug to urge the conductive connector 264 to be electrically connected to the first detecting end 24. After the elastic deformation occurs, the first detecting end 24 and the second detecting end 25 are electrically connected through the conductive connector 264.
  • the resiliently deformable member 263 can use an insulating material to electrically isolate the earphone plug and the conductive connector 264 from the conductive connector 264 from introducing noise into the earphone plug.
  • the elastically deformable member 263 is an insulating material
  • the wires or other electrical connecting elements for connecting the conductive connector 264 and the second detecting end 25 may be embedded in the elastically deformable member 263. Alternatively, it may be attached to the surface of the member 263 which is elastically deformable.
  • the elastically deformable member 263 shown in FIG. 6 can also use a conductive material such as a metal.
  • the membrane switch 26 may further include an insulating layer 265 covering the elastically deformable member 263 for electrically isolating the elastically deformable member. 263 and the earphone plug to avoid introducing noise.
  • the elastically deformable member 263 is a conductor, it can be used to connect the conductive connector 264 and the second detecting end 25, so that an additional connection for the conductive connector 264 and the second can be omitted. Wires or other electrical connection elements of the detection terminal 25.
  • the present invention is placed on the bottom 22 of the earphone jack 20 by a first detecting end 24 that detects whether the earphone plug is inserted into position, and selectively connects the first detecting end 24 and the second detecting by providing a membrane switch 26 that can be elastically deformed.
  • the terminal 25, thereby changing the electrical characteristics between the first detecting end 24 and the second detecting end 25, is electrically detected by the detecting circuit 40 as a result of an electrical characteristic change.
  • the electrical characteristics changed in the embodiment of the present invention may be other electrical characteristics, such as voltage change or resistance value, in addition to being electrically connected or disconnected (ie, electrically isolated). change.
  • the first detecting end 24 and the second detecting end 25 may have a fixed resistance value.
  • the connection may be The resistance value between the first detecting end 24 and the second detecting end 25 is changed, and the resistance value change can be converted into a current signal or a voltage signal, and the detecting circuit 40 can recognize the current signal or voltage formed by the resistance value change. Signal and use this to make sure the headphone plug is in place.
  • Two second detection ends 25 are shown in Fig. 2, located at the junction of the side wall 21 and the bottom 22, respectively.
  • the number of the second detecting ends 25 may be only one or more than three different positions of the side walls 21 and/or the bottom portion 22, which is not limited in this embodiment.
  • the shape of the membrane switch 26 can also take a variety of forms, not limited to curved shapes.
  • the membrane switch 26 can be electrically disconnected from the first detecting end 24 when the earphone plug is not inserted, and can be elastically deformed and electrically connected to the first detecting end 24 when the earphone plug is inserted into position, thereby opening or being operated under an external force.
  • the technical purpose of the embodiment of the present invention can be achieved by the shutdown function.
  • the clamping element 23 is further configured to transmit a signal from the earphone socket 20 to the earphone plug, the signal being a left channel signal or a right channel signal.
  • the clamping element 23 can also be used for grounding or for transmitting microphone signals of the earphone to the earphone socket 20. That is, the clamping member 23 can function as one of the existing L, R, M, and GND contact points.
  • the first elastic piece 231 and the second elastic piece 232 may be an L contact point (or The pin), GND contact, R contact or M contact, the other shrapnel can achieve the same function or not. Taking FIG.
  • the first elastic piece 231 is an L contact point and is used to transmit a left channel signal from the earphone socket 20 to the earphone plug
  • the second elastic piece 232 may have the same function as the first elastic piece 231.
  • the second elastic piece 232 is only a Dummy end, and the Dummy end is not used for transmitting signals but only for implementing the clamping function of the earphone.
  • the first shrapnel 231 is an R contact point, it is used to transmit a right channel signal from the headphone jack 20 to the headphone plug.
  • the first shrapnel 231 is a GND contact point, it is used to ground and transmit a signal to the earphone plug.
  • the above technical solutions are applicable to all kinds of earphones such as three-stage earphones, LRGM earphones and LRMG earphones.
  • the mechanical structure of the solution can be applied and is simple to implement without designing complicated hardware and software.
  • the anti-shake circuit and the threshold detection circuit in the existing detection circuit can be greatly simplified.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Headphones And Earphones (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Measuring Leads Or Probes (AREA)

Abstract

一种耳机插座及检测耳机是否插入到位的方法，属于电子技术领域。所述耳机插座包括：侧壁、底部、位于侧壁上夹持元件、位于底部的第一检测端、位于侧壁或底部上的第二检测端、以及与所述第二检测端电连接的薄膜开关；其中，所述夹持元件用于在耳机插头插入所述耳机插座时夹持所述耳机插头；当所述耳机插头插入不到位时，所述薄膜开关与所述第一检测端电性隔离；所述薄膜开关用于在耳机插头插入到位时在所述耳机插头的压力下产生弹性形变并与第一检测端电连接，以将所述第一检测端电连接至所述第二检测端，并改变所述第一检测端和第二检测端之间的电气特性，以反映该耳机插头在该耳机插座中插入到位。

Description

耳机插座及检测耳机是否插入到位的方法
本申请要求于2015年4月15日提交中国专利局、申请号为201510179295.8、发明名称为“耳机插座及检测耳机是否插入到位的方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及电子技术领域，尤其涉及一种耳机插座及检测耳机是否插入到位的方法。
背景技术
在现有的便携式电子设备，比如手机、平板电脑或媒体播放器中，该设备需要知道耳机的插入状态，即耳机是否插入该便携式电子设备中，以及是插了一半还是完全插入。在该便携式电子设备获知耳机的插入状态后，便携式电子设备可进行相应的操作。例如在获知耳机插入后开始打开媒体播放软件与耳机驱动软件之间的接口。在一种典型的应用场景下，耳机的插入检测是由便携式电子设备中的电路来实现进行的。
由于耳机插头部分通常是金属的，当耳机插头插入便携式电子设备的耳机插座，即耳机孔后，通过耳机插座上的DET和L两个接触点(或者管脚)之间的电压改变进检测耳机的插头是否插入到耳机插座。一个简化的耳机插座结构如图1所示，DET接触点和L接触点都具有弹性形变能力，可用于检测耳机是否插入，此外L接触点还可被便携式电子设备用于向耳机传递左声道信号。耳机插座内还具有其他接触点，例如R接触点被便携式电子设备用于向耳机传递右声道信号，GND接触点用于接地，M用于将耳机产生的声音，即麦克风信号传递给该便携式电子设备。耳机插座DET和L两个接触点在耳机未插入之前彼此之间可没有电连接，一旦耳机插头插入到耳机插座中，则DET接触点和L接触点之间短路，即产生电连接，此时DET接触点的电压发生变化，与DET接触点电相连的电路可识别到该电压变化并发送通知信号给便携 式电子设备中的底层驱动软件，以便该软件执行做相应的操作，从而使得耳机能被该便携式电子设备正常使用。
在现有技术的另一种方案中，耳机插座上的DET接触点和L接触点之间可以在耳机未插入时维持短路，并在耳机插入后使得DET接触点和L接触点变为开路，即耳机的插入导致断开电连接。此时DET接触点的电气特性也会发生变化，则与DET接触点相连的电路也会基于所述电压改变产生通知信号。
由于现有耳机插座的设计，当耳机插头插入一半的时候，DET接触点和L接触点间电连接关系已经改变，虽然此时耳机并没有完全插入到底，即插入不到位，这可能导致R、GND或M几个接触点(或管脚)的接触不良，使得耳机插头不能很好的适应耳机插座，从而导致异常状况。此时便携式电子设备的软件可能需要通过更加复杂的电压阈值探测方案来进一步确定当前耳机是否插入到位，即确定耳机插头是否完全插入耳机插座。
一种典型的检测耳机是否插入到位的现有方案是通过检测不同插入状态下的检测电路中分压关系来进行的。然而现有的耳机种类繁多，常用的耳机有三段式耳机、美标耳机(LRGM)和国标耳机(LRMG)三种类型，不同耳机插头有不同阻抗，导致耳机插座的结构可能不完全一致，这会导致插入过程中的耳机插头和耳机插座的连接状态非常复杂，从而导致DET点的分压关系中出现很多不同数值。因此现有的通过电路检测分压关系来确定耳机是否插入到位方案需要复杂的电路硬件设计和软件状态机设计，提高了产品实现成本。
发明内容
本发明实施例提供了一种耳机插座及检测耳机是否插入到位的方法，以降低现有的检测耳机是否插入到位的方案的复杂度。
第一方面，本发明实施例提供了一种耳机插座，包括：侧壁、底部、位于侧壁上夹持元件、位于底部的第一检测端、位于侧壁或底部上的第二检测端、 以及与所述第二检测端电连接的薄膜开关；其中，所述夹持元件用于在耳机插头插入所述耳机插座时夹持所述耳机插头；当所述耳机插头插入不到位时，所述薄膜开关与所述第一检测端电性隔离，且所述第一检测端和第二检测端之间的电气特性为第一电气特性；所述薄膜开关用于在耳机插头插入到位时在所述耳机插头的压力下产生弹性形变并与第一检测端电连接，以将所述第一检测端电连接至所述第二检测端，并将所述第一检测端和第二检测端之间的电气特性变为第二电气特性，所述第二电气特性用于产生一电信号以反映该耳机插头在该耳机插座中插入到位。
根据第一方面，在第一方面的第一种可能的实现方式中，所述薄膜开关包括可发生弹性形变的导电层和覆盖在该导电层上的绝缘层；所述导电层与所述第二检测端电连接，并在耳机插头插入到位时在所述耳机插头的压力下产生弹性形变并与第一检测端电连接；所述绝缘层用于电性隔离所述导电层和所述耳机插头。
根据第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，所述导电层为金属层。
根据第一方面，在第一方面的第三种可能的实现方式中，所述薄膜开关包括可发生弹性形变的部件和导电连接器；所述导电连接器与所述第二检测端电连接；所述可发生弹性形变的部件在所述耳机插头的压力下产生弹性形变，以促使所述导电连接器与第一检测端电连接。
根据第一方面的第三种可能的实现方式，在第一方面的第四种可能的实现方式中，所述可发生弹性形变的部件使用绝缘材料。
根据第一方面的第三种可能的实现方式，在第一方面的第五种可能的实现方式中，所述可发生弹性形变的部件使用导电材料；所述薄膜开关进一步包括覆盖在该可发生弹性形变的部件上的绝缘层，所述绝缘层用于电性隔离所述可发生弹性形变的部件和所述耳机插头。
根据第一方面、或第一方面的第一种至第五种可能的实现方式中的任一方式，在第一方面的第六种可能的实现方式中，所述夹持元件包括用于夹持所述耳机插头的多个弹片。
根据第一方面、或第一方面的第一种至第六种可能的实现方式中的任一方式，在第一方面的第七种可能的实现方式中，所述夹持元件还用于将来自所述耳机插座的信号传输至所述耳机插头。
根据第一方面的第七种可能的实现方式，在第一方面的第八种可能的实现方式中，所述信号为以下任一项：左声道信号和右声道信号。
据第一方面、或第一方面的第一种至第八种可能的实现方式中的任一方式，在第一方面的第九种可能的实现方式中，述第一电气特性为电性隔离，所述第二电气特性为电连接。
第二方面，本发明实施例还提供了一种便携式电子设备，包括第一方面、或第一方面的第一种至第九种可能的实现方式中的任一方式所揭露的耳机插座、以及检测电路；所述检测电路用于检测所述电信号以识别出该耳机插头在该耳机插座中插入到位。
根据第二方面，在第二方面的第一种可能的实现方式中，所述电子设备为便携式电子设备。
第三方面，本发明实施例还提供了一种检测耳机是否插入到位的方法，包括：当耳机插头插入所述耳机插座时，利用位于该耳机插座的侧壁上的夹持元件夹持所述耳机插头；当所述耳机插头插入不到位时，所述耳机插座内的薄膜开关仅与位于耳机插座的所述侧壁或底部上的第二检测端电连接，并避免与位于耳机插座的底部的第一检测端电连接，且所述第一检测端和第二检测端之间的电气特性为第一电气特性；当所述耳机插头插入到位时，所述薄膜开关用于在所述耳机插头的压力下产生弹性形变并与第一检测端电连接，以将所述第一检测端电连接至所述第二检测端，并将所述第一检测端和第二检测端之间的电 气特性变为第二电气特性，所述第二电气特性用于产生一电信号以反映该耳机插头在该耳机插座中插入到位。
本发明实施例提供了一种耳机插座及检测耳机是否插入到位的方法，通过在耳机插座中设置可发生弹性形变的薄膜开关来连接不同的检测端，达到改变不同检测端之间的电气特性，从而产生用于反映该耳机插头插入到位的电信号，实现了对耳机插头插入到位的检测。本实施例提供的技术方案采用具有机械的结构开关实现检测，避免使用复杂的分压关系检测电路或检测软件，技术方案实现简单且降低了实现成本。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例或现有技术的简化示意图，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为现有技术提供的一种简化的耳机插座结构的示意图；
图2为本发明实施例提供的一种简化的耳机插座结构的示意图；
图3为本发明实施例提供的一种沿耳机插入方向所看到的耳机插座简化结构的示意图；
图4为本发明实施例提供的一种检测耳机是否插入到位的简要系统的示意图；
图5为本发明实施例提供的一种薄膜开关的简化结构的示意图；
图6为本发明实施例提供的另一种薄膜开关的简化结构的示意图；
图7为本发明实施例提供的另一种薄膜开关的简化结构的示意图；
图8为本发明实施例提供的一种检测耳机是否插入到位的方法的简要流程示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
图2为本发明实施例提供的一种耳机插座20的简化结构示意图。该耳机插座20包括：侧壁21、底部22、位于侧壁21上夹持元件23、位于底部22的第一检测端24、位于侧壁21或底部22上的第二检测端25、以及与所述第二检测端25电连接的薄膜开关26。在图2中，第二检测端25位于侧壁21和底部22的连接处。可以理解，第二检测端25也可位于图2中侧壁21上的21A处或底部22上的22A处，因此图2或以上实施例不应视为是对本发明保护范围的限定。
在图2中，耳机插头可沿箭头A方向插入该耳机插座20。具体的耳机插头是否插入到位的检测过程可参见图8。在S81中，当耳机插头沿A方向插入时，所述夹持元件23可夹持所述耳机插头。如图2所示，所述夹持元件23可包括互相分离的第一弹片231和第二弹片232，而这两个弹片231和232共同对耳机插头进行夹持，保证耳机插头插入该耳机插座20后不会轻易脱落。可替换地，除图2中两个弹片231和232，所述夹持元件23还可以包括其他更多的弹片，用于对插入的耳机插头实现更好的夹持，因此所述夹持元件23包括的弹片数量可以由本领域技术人员依照使用需要做设置。
在本发明另一个实施例中，所述夹持元件23也可以是一个整体，而不是 包括多个弹片。例如，以耳机插座20和耳机插头为圆形为例，如果从图2中沿虚线B截断该耳机插座20，则沿耳机插入方向A看到的视图可如图3所示。该夹持元件23在耳机插座20的侧壁21上环绕一周，以实现对耳机插头的夹持，即此时夹持元件23是一个环形弹片。无论夹持元件23采用何种结构，其包括的一个或多个弹片均可在耳机插头插入的过程中实现弹性形变，并在夹持元件23本身张力作用下夹住该耳机插头，实现对耳机插头的固定。可以理解，耳机插座的插孔形状除了圆形外也可以是方形、三角形等其他形状，本实施例附图3对本发明的保护范围不构成限制。
当耳机插头插入耳机插座20时，存在两种情况。在第一种情况下，耳机插头没有完全插入，即耳机插头没有达到该耳机插座20的底部22，即插入不到位。只有在耳机插头达到底部22时，本次插入是完全插入，也即插入到位。
具体参见图8的检测方法中的S82，当所述耳机插头插入不到位时，所述薄膜开关26与所述第一检测端24的关系如图2所示，可避免电连接，即此时薄膜开关26与第一检测端24是电性隔离的。此时所述第一检测端24和第二检测端25之间的电气特性为第一电气特性。该第一电气特性可以是无电连接，即电性隔离。第一检测端24和第二检测端25也就是检测的两个端点，所述检测端24和25通常是金属端，即两个金属管脚。薄膜开关26在没有耳机插头插入时仅与第二检测端25电连接，不会与第一检测端24电连接，因此第一检测端24和第二检测端25彼此之间是开路。
在S83中，当耳机插头插入到位时，所述薄膜开关26在所述耳机插头的压力下沿A方向产生弹性形变(图中未示出)并与第一检测端24电连接。通过薄膜开关26，所述第一检测端24在薄膜开关26的导通下被电连接至所述第二检测端25，所述第一检测端24和第二检测端25之间的电气特性变为第二电气特性。与电性隔离的第一电气特性相对的，所述第二电气特性可为电连接。如图4所示，在本发明的一个实例提供的系统示意中，耳机插座20中的 第一检测端24和第二检测端25在耳机插头插入后出现电连接，使得连接至第一检测端24和/或第二检测端25连接至检测电路40。检测电路40可轻易检测到该第一检测端24和第二检测端25之间的电连接关系的改变所产生一电信号，该电信号可反映该耳机插头在该耳机插座中插入到位。具体在图4中，第一检测端24和第二检测端25在电连接后可将一个源电压V通过信号线42连接至检测电路40，检测电路40通过信号线42接收到反映源电压V大小的所述电信号，从而能够通过检测该电信号而识别出耳机插头插入到位。可选地，源电压V可以是1.8伏(V)电压，则所述电信号为大小1.8V的电压信号，并被检测电路40检测到，此时检测电路40可以具体是一个电压检测电路。
如图4所示，本发明实施例的检测电路40可以位于一个音视频处理模块43之中。音视频处理模块43具体可以是一个芯片或芯片中的一个功能单元。该耳机插座20和包括该检测电路40的音视频处理模块43可位于一个便携式电子设备45中，该便携式电子设备45可以是手机、媒体播放器、或平板电脑等。当然，所述方案不仅可应用于便携式电子设备，而是可被应用在其他各类电子设备中，包括服务器和固定台等。
如图5所示，在一种可选实现方式中，所述薄膜开关26包括可发生弹性形变的导电层261和覆盖在该导电层上的绝缘层262；所述导电层261与所述第二检测端25电连接，并在耳机插头插入到位时在所述耳机插头的压力下沿A方向产生弹性形变并与第一检测端24电连接。通过该导电层261，第一检测端24与第二检测端25被电连接。所述绝缘层262用于电性隔离所述导电层261和所述耳机插头，使得耳机插头的导电部分不会与用于实现插入到位检测的导电层261发生直接接触，可避免对耳机引入噪声。通常情况下导电层261为金属层，如铝层。
如图6所示，在另一种可选实现方式中，所述薄膜开关26包括可发生弹性形变的部件263和导电连接器264。所述导电连接器264通常是金属的导电 连接元件，导电连接器264可与所述第二检测端25通过导线或其他形式电连接。所述可发生弹性形变的部件263在所述耳机插头的压力下沿A方向产生弹性形变，以促使所述导电连接器264与第一检测端24电连接。在弹性形变发生后，通过导电连接器264，第一检测端24与第二检测端25被电连接。所述可发生弹性形变的部件263可使用绝缘材料，以电性隔离耳机插头和所述导电连接器264，避免导电连接器264为耳机插头引入噪声。所述可发生弹性形变的部件263是绝缘材料时，用于连接所述导电连接器264与所述第二检测端25的导线或其他电连接元件可埋设在可发生弹性形变的部件263中，或者可贴合在可发生弹性形变的部件263的表面。
可替换地，在另一种可选实现方式中，图6所示的可发生弹性形变的部件263也可使用导电材料，如金属。此时如图7所示，所述薄膜开关26可进一步包括覆盖在该可发生弹性形变的部件263上的绝缘层265，所述绝缘层265用于电性隔离所述可发生弹性形变的部件263和所述耳机插头，避免引入噪声。此时由于可发生弹性形变的部件263为导体，其本身可用于连接导电连接器264和所述第二检测端25，因此可以省略额外的用于连接所述导电连接器264与所述第二检测端25的导线或其他电连接元件。
本发明通过将检测耳机插头是否插入到位的第一检测端24放置于耳机插座20的底部22，并通过设置可发生弹性形变的薄膜开关26来选择性的连接第一检测端24和第二检测端25，从而改变第一检测端24和第二检测端25间的电气特性，由于电气特性改变而产生的电信号可方便的被检测电路40检测到。此方案通过简单的机械结构实现较好的检测效果，避免使用复杂的分压关系检测电路或检测软件，技术方案实现简单且降低了产品实现成本。
需要说明的是，在本发明实施例中被改变的电气特性除了可以为电连接或断开电连接(即电性隔离)外，也可以是其他电气特性，如电压改变或电阻值 改变。例如第一检测端24和第二检测端25之间本来可具有固定电阻值，当耳机插头插入到位，第一检测端24和第二检测端25通过薄膜开关26电连接，则这种连接会改变第一检测端24和第二检测端25之间的电阻值，这种电阻值改变可被转换为电流信号或电压信号，检测电路40可识别这种由电阻值改变形成的电流信号或电压信号，并以此确定耳机插头插入到位。或者可选地，第一检测端24和第二检测端25通过薄膜开关26电连接后，第一检测端24和第二检测端25之间原本存在的一电压将因此被改变，从而被检测电路40检测到这种电压变化并以此识别到耳机插头插入到位。对于本实施例中提到的可发生变化的电气特性，可以存在多种不同的表现形式，其具体实现形式不用于限制本发明。
在图2中示出了两个第二检测端25，分别位于侧壁21和底部22的两个连接处。实际上，第二检测端25的数量可以只有一个或还可以有三个以上并侧壁21和/或底部22的不同位置，本实施例对此不作限制。薄膜开关26的形状也可以有多种形式，不仅限于弧形。薄膜开关26可在耳机插头插入不到位时不与第一检测端24电连接，并在耳机插头插入到位时可发生弹性形变并与第一检测端24电连接，从而在外力作用下实现打开或关闭功能，则均可达到本发明实施例的技术目的。
在本发明的一种实现方式中，所述夹持元件23还用于将来自所述耳机插座20的信号传输至所述耳机插头，该信号可为左声道信号或右声道信号。所述夹持元件23也可用于接地或用于将耳机的麦克风信号传输至耳机插座20。也即是说，夹持元件23可实现现有的L、R、M和GND接触点中任一个管脚的功能。例如，第一弹片231和第二弹片232中的至少一个可以是L接触点(或 管脚)、GND接触点、R接触点或M接触点，另一个弹片则可以实现同样的功能或也可以不是任何接触点。以图2为例，第一弹片231是L接触点并用于将来自耳机插座20的左声道信号传输至所述耳机插头，而第二弹片232可以具有和第一弹片231相同的功能。或者如图2所示第二弹片232仅是一个Dummy端，该Dummy端并不用于传输信号而仅用于实现耳机的夹持功能。可选地，当第一弹片231是R接触点，其用于将来自耳机插座20的右声道信号传输至所述耳机插头。当第一弹片231是GND接触点，其用于接地并传输地信号给耳机插头。
以上技术方案适用于三段式耳机、LRGM耳机和LRMG耳机等各类耳机。无论耳机以及耳机插座的L、R、G和M四个接触点如何排序，该方案的机械结构都能够适用，且实现简单，无需设计复杂的软硬件。例如可大大简化现有的检测电路中的的防抖电路和阈值检测电路。
以上所述仅为本发明的几个实施例，本领域的技术人员依据申请文件公开的可以对本发明进行各种改动或变型而不脱离本发明的精神和范围。例如本发明实施例的附图中的各个部件具体形状或结构是可以根据实际应用场景进行调整的。

Claims (13)

  1. 一种耳机插座，其特征在于，包括：侧壁、底部、位于侧壁上夹持元件、位于底部的第一检测端、位于侧壁或底部上的第二检测端、以及与所述第二检测端电连接的薄膜开关；其中，
    所述夹持元件用于在耳机插头插入所述耳机插座时夹持所述耳机插头；
    当所述耳机插头插入不到位时，所述薄膜开关与所述第一检测端电性隔离，且所述第一检测端和第二检测端之间的电气特性为第一电气特性；
    所述薄膜开关用于在耳机插头插入到位时在所述耳机插头的压力下产生弹性形变并与第一检测端电连接，以将所述第一检测端电连接至所述第二检测端，并将所述第一检测端和第二检测端之间的电气特性变为第二电气特性，所述第二电气特性用于产生一电信号以反映该耳机插头在该耳机插座中插入到位。
  2. 根据权利要求1所述的耳机插座，其特征在于，所述薄膜开关包括可发生弹性形变的导电层和覆盖在该导电层上的绝缘层；
    所述导电层与所述第二检测端电连接，并在耳机插头插入到位时在所述耳机插头的压力下产生弹性形变并与第一检测端电连接；
    所述绝缘层用于电性隔离所述导电层和所述耳机插头。
  3. 根据权利要求2所述的耳机插座，其特征在于，所述导电层为金属层。
  4. 根据权利要求1所述的耳机插座，其特征在于，所述薄膜开关包括可发生弹性形变的部件和导电连接器；
    所述导电连接器与所述第二检测端电连接；
    所述可发生弹性形变的部件在所述耳机插头的压力下产生弹性形变，以促使所述导电连接器与第一检测端电连接。
  5. 根据权利要求4所述的耳机插座，其特征在于，所述可发生弹性形变的部件使用绝缘材料。
  6. 根据权利要求4所述的耳机插座，其特征在于，所述可发生弹性形变 的部件使用导电材料；
    所述薄膜开关进一步包括覆盖在该可发生弹性形变的部件上的绝缘层，所述绝缘层用于电性隔离所述可发生弹性形变的部件和所述耳机插头。
  7. 根据权利要求1至6中任一项所述的耳机插座，其特征在于，所述夹持元件包括用于夹持所述耳机插头的多个弹片。
  8. 根据权利要求1至7中任一项所述的耳机插座，其特征在于，所述夹持元件还用于将来自所述耳机插座的信号传输至所述耳机插头。
  9. 根据权利要求8所述的耳机插座，其特征在于，所述信号为以下任一项：左声道信号和右声道信号。
  10. 根据权利要求1至9中任一项所述的耳机插座，其特征在于，所述第一电气特性为电性隔离，所述第二电气特性为电连接。
  11. 一种电子设备，其特征在于，包括根据权利要求1至10中任一项所述耳机插座、以及检测电路；
    所述检测电路用于检测所述电信号以识别出该耳机插头在该耳机插座中插入到位。
  12. 根据权利要求11所述的电子设备，其特征在于，所述电子设备为便携式电子设备。
  13. 一种检测耳机是否插入到位的方法，其特征在于，包括：
    当耳机插头插入所述耳机插座时，利用位于该耳机插座的侧壁上的夹持元件夹持所述耳机插头；
    当所述耳机插头插入不到位时，所述耳机插座内的薄膜开关仅与位于耳机插座的所述侧壁或底部上的第二检测端电连接，并避免与位于耳机插座的底部的第一检测端电连接，且所述第一检测端和第二检测端之间的电气特性为第一电气特性；
    当所述耳机插头插入到位时，所述薄膜开关用于在所述耳机插头的压力下 产生弹性形变并与第一检测端电连接，以将所述第一检测端电连接至所述第二检测端，并将所述第一检测端和第二检测端之间的电气特性变为第二电气特性，所述第二电气特性用于产生一电信号以反映该耳机插头在该耳机插座中插入到位。
PCT/CN2015/092102 2015-04-15 2015-10-16 耳机插座及检测耳机是否插入到位的方法 WO2016165297A1 (zh)

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