WO2014012234A1 - 电子设备音频控制系统及其控制方法 - Google Patents

电子设备音频控制系统及其控制方法 Download PDF

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Publication number
WO2014012234A1
WO2014012234A1 PCT/CN2012/078879 CN2012078879W WO2014012234A1 WO 2014012234 A1 WO2014012234 A1 WO 2014012234A1 CN 2012078879 W CN2012078879 W CN 2012078879W WO 2014012234 A1 WO2014012234 A1 WO 2014012234A1
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Prior art keywords
contact
audio
electronic device
contacts
main controller
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PCT/CN2012/078879
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English (en)
French (fr)
Inventor
蔡怀烜
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环汇系统有限公司
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Priority to PCT/CN2012/078879 priority Critical patent/WO2014012234A1/zh
Publication of WO2014012234A1 publication Critical patent/WO2014012234A1/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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Definitions

  • the present invention relates to the field of electronic device technology, and more particularly to an electronic device audio control system and a control method thereof that can automatically adapt to different interface polarities when connected to a hands-free interface of a mobile electronic device such as a mobile phone or a tablet computer.
  • the 3.5mm hands-free interface of electronic devices such as smart phones, tablet computers, network media players, game machines, etc.
  • electronic devices such as smart phones, tablet computers, network media players, game machines, etc.
  • an electronic device such as a card reader can pass the The channel is connected to a mobile phone or a computer.
  • the audio interface 1 of the mobile phone 100 has two standards, one of which is four terminals which are sequentially arranged in the plugging direction as a microphone input terminal 104, a ground terminal 103, and a right channel headphone output terminal.
  • 102 and the left channel headphone output terminal 101 and the other standard is the ground terminal 103, the microphone input terminal 104, the right channel headphone output terminal 102, and the left channel headphone output terminal 101, and the ground terminal 103 of both
  • the position is interchanged with the microphone input terminal 104.
  • the same electronic device can only adapt to one of the standard audio interfaces 1; as shown in FIG. 3, when the audio plug of the electronic device is inserted into another mobile audio interface 1, the ground wire is Both the terminal 203 and the microphone output terminal 204 cannot be matched with the mobile phone audio interface 1; thus, it brings inconvenience to people's lives.
  • a conversion circuit is designed, and when the conversion circuit in the electronic device is connected to the audio interface of the mobile phone, the conversion circuit can automatically convert the polarity according to the audio plug connection of the mobile phone, thereby making the audio plug suitable for the aforementioned two kinds of audio.
  • the interface provides convenience for people's life applications. However, in actual production and application, it will be found that it greatly increases the complexity of the line, increases the cost, and increases the volume occupied by the product. At the same time, the aforementioned conversion line will cause attenuation and distortion of the output and input signals. , reducing the reliability of communication.
  • the present invention is directed to the lack of the prior art, and the main purpose thereof is to provide an audio control system for an electronic device, which has a simple structure, a simple circuit, and eliminates a converter, thereby saving space occupied by the converter and reducing
  • the production cost is also more convenient for people to use;
  • Another object of the present invention is to provide a method for controlling an audio control system of an electronic device.
  • the method is simple, and the audio plug of the electronic device can be adapted to two different standard audio interfaces without relying on too many components.
  • An electronic device audio control system includes a main controller and an audio plug connected to the main controller, the audio plug having at least four contacts corresponding to the electrodes of the audio interface, and the contacts are sequentially defined along the audio plug insertion direction a first contact, a second contact, a third contact, and a fourth contact, wherein the first contact and the second contact are respectively connected with a circuit connected to the main controller with a resistor, and each resistor is connected between the lines of the corresponding contact
  • the first contact and the second contact are controlled by the main controller as an audio output module; one of the third contact and the fourth contact is a ground contact, and the other contact is an audio input contact.
  • the ground contact is used for a ground contact that is in electrical contact with a left channel output contact or a right channel output contact that outputs a zero potential in the audio interface.
  • the audio input contact is a left channel input contact or a right channel input contact.
  • the audio plug of the electronic device has at least four contacts corresponding to the electrical contacts of the electrodes of the audio interface, and the contacts are sequentially defined as the first contact, the second contact, the third contact, and the fourth contact along the audio plug insertion direction;
  • the first contact and the second contact are controlled by the main controller as an audio output module, and the first contact and the second contact are respectively connected to the main controller line, and resistors are respectively arranged, and the lines of the resistors to the corresponding contacts are short-circuited. Connecting, so that the audio input electrode of the audio interface can form an audio input whether it is in contact with the first contact or the second contact;
  • One of the third contact and the fourth contact is used as a ground contact, and the other is used as an audio input contact.
  • the mobile phone software controls the contact output as the ground contact to output zero potential.
  • the electronic device obtains a required zero potential reference point, and the specific connection with the first and second contacts None.
  • the structure and circuit of the audio control system of the electronic device are simple, and the modification is less than the conventional technology, in particular, the converter is eliminated, the space occupied by the converter is saved, the production cost is reduced, and the use is also more used by people. For convenience;
  • the audio input can be formed, so that the audio plug of the electronic device is adapted to two different standard audio interfaces, and the method is simple and convenient for popularization and application.
  • Figure 1 is a schematic view of the structure of the current 3.5 mm audio plug (four-stage);
  • FIG. 2 is a block diagram showing the connection between the audio interface of the prior art and the audio interface of the first standard
  • 3 is a block diagram showing the connection between the audio interface of the prior art and the audio interface of the second standard
  • FIG. 4 is a block diagram showing the connection of the audio plug of the electronic device of the present invention to the first standard audio interface
  • Figure 5 is a block diagram showing the connection of the audio plug of the electronic device of the present invention to the second standard audio interface.
  • left channel headphone output terminal 102 right channel headphone output terminal
  • the electronic device of the present invention is used as an accessory of another electronic device (such as a smart phone, a tablet computer, a network media player, a game machine, etc.), and the electronic device and the other electronic device are connected by an audio plug and an audio interface. Connect to enable communication between two electronic devices.
  • another electronic device such as a smart phone, a tablet computer, a network media player, a game machine, etc.
  • the same audio plug 200 cannot accommodate two different standard audio interfaces 1.
  • the audio interface 1 of the mobile phone 100 in this embodiment is used for the audio interface matched with the audio plug 200 shown in FIG. 1 to FIG. 5, and the interface is a 3.5 mm standard audio interface, and the audio interface is not only used as an audio interface. It can also be used for data transmission channels, for example, the card reader is connected to a mobile phone or a computer through the channel.
  • the audio control system of the electronic device 300 of the present invention includes a main controller 10 (which may be composed of a microprocessor or a custom-dedicated chip or the like) and an audio plug 200 connected to the main controller 10, the audio plug 200 having at least Four contacts corresponding to the electrodes of the audio interface 1 are electrically connected to each other along the insertion direction of the audio plug 200 as a first contact, a second contact, a third contact, and a fourth contact, the first contact and the second A resistor 20 is connected to the line connecting the contact point to the main controller 10, and each of the resistors 20 to the corresponding contact line is short-circuited, and the first contact and the second contact are controlled by the main controller 10 as an audio output.
  • a main controller 10 which may be composed of a microprocessor or a custom-dedicated chip or the like
  • the audio plug 200 having at least Four contacts corresponding to the electrodes of the audio interface 1 are electrically connected to each other along the insertion direction of the audio plug 200 as a first contact, a
  • one of the third contact and the fourth contact serves as a ground contact, and the other contact serves as an audio input contact; and outputs a zero potential to the ground contact by controlling a mobile phone, a tablet computer or the like that interfaces with the audio plug
  • the electronic device obtains the required zero potential reference point and is independent of the specific connection of the first and second contacts.
  • the four contacts are sequentially a microphone output terminal 204, a ground terminal 203, a right channel earphone input terminal 202, and a left channel earphone input terminal 201.
  • the corresponding electrodes in the audio interface 1 are sequentially microphone input terminals. 104, the ground terminal 103, the right channel headphone output terminal 102 and the left channel headphone output terminal 101; as shown in FIG. 5, the corresponding electrodes in the audio interface 1 are the ground terminal 103, the microphone input terminal 104, and the right sound.
  • the headphone output terminal 102 and the left channel headphone output terminal 101 control the left channel headphone output terminal 101 or the right channel headphone output terminal 102 to output a zero potential through an internal software program such as a smartphone or a tablet computer, and the corresponding left channel
  • the earphone input terminal 201 or the right channel earphone input terminal 202 is used as a ground contact; and the right channel earphone output terminal 102 or the left channel earphone output terminal 101 in the audio interface of a mobile phone or a tablet computer is controlled by a mobile phone or a tablet computer.
  • the corresponding right channel earphone output terminal 202 or left channel earphone output terminal 201 is transmitted to the controller for a mobile phone or a tablet computer or the like.
  • the input terminal of the signal of the direction; the ground terminal 203 and the microphone output terminal 204 are both connected to the audio output module of the main controller 10 in the electronic device 300, so that the audio interface 1 is the structure shown in FIG. 4 or FIG.
  • the ground terminal 203 and the microphone output terminal 204 are both connected to the audio output module of the main controller 10 in the electronic device 300, so that the audio input electrode of the audio interface 1 is connected to the ground terminal 203 or the microphone output terminal of the audio plug 200.
  • the 204 contacts can form an audio input, and the electronic device 300 to which the audio control system is applied can be matched to the two different audio interfaces 1 described above, without relying on additional components or additional operations.
  • the design focus of the present invention is that the structure and circuit of the audio control system of the electronic device are simple, save space and cost, and not cause attenuation and distortion of the output and input signals, and maintain the reliability of communication, compared with the conventional conversion circuit.
  • the corresponding audio output electrode of the audio interface outputs a zero potential, so that the ground terminal obtains a reference zero potential; and the ground terminal of the conventional technology is connected in parallel with the audio output terminal to make the audio
  • the audio input electrode of the interface can form an audio input regardless of the first contact or the second contact of the audio plug, so that the audio plug of the electronic device is adapted to two different standard audio interfaces, and the method is simple and convenient for popularization and application.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

一种电子设备音频控制系统及其控制方法，该电子设备（300）是与手机、平板计算机等的音频接口（1）连接的配件。该电子设备音频控制系统包括主控制器（10）以及与主控制器（10）连接的音频插头（200），该音频插头（200）至少具有四个对应与音频接口（1）的各电极电接触的接点，各接点沿音频插头插入方向依次定义为第一、第二、第三及第四接点，所述第一、第二接点分别与主控制器（10）连接的线路上均连接有电阻器（20），各电阻器（20）至对应接点的线路之间为短路连接，且该第一、第二接点由主控制器（10）控制为音频输出模块；所述第三、第四接点的其中一接点为地线接点，另一接点为音频输入接点，并通过控制手机、平板计算机等对上述地线接点输出零电位。该电子设备（300）的音频插头（200）能自动适应不同音频接口（1）的极性。

Description

电子设备音频控制系统及其控制方法 技术领域
本发明涉及电子设备领域技术，尤其是指一种连接到例如手机或平板计算机等流动电子设备的免提接口时,能自动适应不同接口极性的电子设备音频控制系统及其控制方法。
背景技术
目前智能手机、平板计算机、网络媒体播放器、游戏机等电子设备的3.5mm免提接口，其不仅作为音频接口使用，其还可作用数据传输通道使用，例如，刷卡器等电子设备能通过该通道与手机或电脑等连接。
如图1至3所示，手机100的音频接口1有两种标准，其中一种标准系四个端子沿插接方向依次设置为麦克风输入端子104、地线端子103、右声道耳机输出端子102及左声道耳机输出端子101，而另一种标准则为地线端子103、麦克风输入端子104、右声道耳机输出端子102及左声道耳机输出端子101，两者的地线端子103和麦克风输入端子104位置互换。如图2所示，同一电子设备只能适配其中一种标准音频接口1的手机；如图3所示，当该电子设备的音频插头插入另一种手机音频接口1内时，其地线端子203及麦克风输出端子204均不能与手机音频接口1匹配；如此，给人们的生活带来不便。
后来，有人研究出一种解决办法 ，即设计一转换电路，电子设备内之转换电路令到与手机的音频接口连接时，该转换电路能根据手机音频插头接法自动转换极性，从而，使得音频插头能适用于前述两种音频接口，给人们的生活应用提供了便利。但是，在实际生产与应用时会发现，其很大程度上增加了线路的复杂度，增加了成本，也增加了产品所占体积，同时，前述的转换线路会造成输出与输入信号衰减及失真，降低了通讯的可靠性。
因此，如何克服以上缺点是业内亟待解决的课题。
发明内容
有鉴于此，本发明针对现有技术存在之缺失，其主要目的是提供一种电子设备音频控制系统，其结构简单，线路简单，免去了转换器，节省了转换器所占用的空间，降低了生产成本，人们使用时也更为便捷；
本发明之另一目的是提供一种电子设备音频控制系统的控制方法，其方法简单，不需依赖过多元器件即可使得电子设备的音频插头适配于两种不同标准的音频接口。
为实现上述目的，本发明采用如下之技术方案：
一种电子设备音频控制系统，包括主控制器以及与主控制器连接的音频插头，该音频插头至少具有四个对应与音频接口的各电极电接触的接点，各接点沿音频插头插入方向依次定义为第一接点、第二接点、第三接点以及第四接点，所述第一接点与第二接点分别与主控制器连接的线路上连接有电阻器，各电阻器至对应接点的线路之间为短路连接，且该第一接点与第二接点由主控制器控制为音频输出模块；所述第三接点和第四接点的其中一接点为地线接点，另一接点为音频输入接点。
作为一种优选方案，所述地线接点系用于与音频接口中输出零电位的左声道输出接点或右声道输出接点电接触的地线接点。
作为一种优选方案，所述音频输入接点为左声道输入接点或右声道输入接点。
一种电子设备音频控制系统的控制方法，
（1）电子设备中音频插头至少具有四个对应与音频接口的各电极电接触的接点，各接点沿音频插头插入方向依次定义为第一接点、第二接点、第三接点以及第四接点；
（2）由主控制器控制第一接点、第二接点为音频输出模块，第一接点、第二接点连接于主控制器线路上分别设有电阻器，各电阻器至对应接点的线路为短路连接，使音频接口的音频输入电极无论与第一接点或第二接点接触均可形成音频输入；
（3）将第三接点、第四接点的其中一接点作为地线接点，而另一接点作为音频输入接点。手机软件控制选定作为地线接点的接点输出零电位.
作为一种优选方案，通过控制与上述音频插头对接的手机、平板计算机等对上述地线接点输出零电位，电子设备得到需要的零电位参考点，且与第一及第二接点的具体接法无关。
本发明采用上述技术方案后，其有益效果在于：
一、该电子设备音频控制系统之结构及线路简单，相比传统技术其改动少，尤其是，免去了转换器，节省了转换器所占用的空间，降低了生产成本，人们使用时也更为便捷；
二、将传统技术中的一个音频输入端子控制为零电位输出；并将传统技术中的接地端子与音频输出端子并联，使音频接口的音频输入电极无论与音频插头第一接点或第二接点接触均可形成音频输入，这样，使得电子设备的音频插头适配于两种不同标准的音频接口，其方法简单，便于推广应用。
附图说明
图1是目前3.5毫米音频插头的结构示示意图（四段式）；
图2是现有技术中音频接口与第一种标准的音频接口的连接框图；
图3是现有技术中音频接口与第二种标准的音频接口的连接框图；
图4是本发明之电子设备的音频插头与第一种标准的音频接口的连接框图；
图5是本发明之电子设备的音频插头与第二种标准的音频接口的连接框图。
附图标识说明：
100、手机 1、音频接口
101、左声道耳机输出端子 102、右声道耳机输出端子
103、地线端子 104、麦克风输入端子
200、音频插头 201、左声道耳机输入端子
202、右声道耳机输入端子 203、地线端子
204、麦克风输出端子
300、电子设备 10、主控制器
20、电阻器
具体实施方式
请参见图4及图5所示，其显示出了本发明之较佳实施例的具体结构及原理。本发明所述之电子设备作为另一电子设备（如智能手机、平板计算机、网络媒体播放器、游戏机等）之配件,该电子设备与另一电子设备之间系由音频插头和音频接口相连接,以实现两电子设备间的通讯。
从图1至图3可以看出，同一音频插头200不能适配两种不同标准的音频接口1。本实施例所指手机100的音频接口1系用于与图1至图5所示音频插头200匹配之音频接口，其系接口为3.5mm之标准音频接口，该音频接口不仅作为音频接口使用，其还可作用数据传输通道使用，例如，刷卡器通过该通道与手机或电脑等连接。
本发明之电子设备300音频控制系统包括主控制器10(该主控制器10可由微处理器或订制专用芯片等组成)以及与主控制器10连接的音频插头200，该音频插头200至少具有四个对应与音频接口1的各电极电接触的接点，各接点沿音频插头200插入方向依次定义为第一接点、第二接点、第三接点以及第四接点，所述第一接点与第二接点分别与主控制器10连接的线路上连接有电阻器20，各电阻器20至对应接点的线路之间为短路连接，且该第一接点与第二接点由主控制器10控制为音频输出模块；所述第三接点和第四接点的其中一个接点作为地线接点，而另一个接点作为音频输入接点；通过控制与上述音频插头对接的手机、平板计算机等对上述地线接点输出零电位，电子设备得到需要的零电位参考点，且与第一及第二接点的具体接法无关。
如图4所示，前述四个接点依次为麦克风输出端子204、地线端子203、右声道耳机输入端子202及左声道耳机输入端子201，音频接口1内的对应电极依次为麦克风输入端子104、地线端子103、右声道耳机输出端子102及左声道耳机输出端子101；如图5所示，音频接口1内的对应电极依次为地线端子103、麦克风输入端子104、右声道耳机输出端子102及左声道耳机输出端子101；通过智能手机或平板计算机等内部软件编程控制左声道耳机输出端子101或右声道耳机输出端子102输出为零电位，相应的左声道耳机输入端子201或右声道耳机输入端子202则作为地线接点；而手机或平板计算机等的音频接口内的右声道耳机输出端子102或左声道耳机输出端子101由手机或平板计算机控制为音频输出，相应的右声道耳机输出端子202或左声道耳机输出端子201为手机或平板计算机等传输至控制器方向之讯号的输入接点；该地线端子203及麦克风输出端子204均连接于电子设备300内主控制器10的音频输出模块，如此，不管音频接口1为图4所示结构还是图5所示结构，该地线端子203及麦克风输出端子204均连接于电子设备300内主控制器10的音频输出模块，使得音频接口1的音频输入电极无论与音频插头200的地线端子203还是麦克风输出端子204接触均可形成音频输入，应用该种音频控制系统的电子设备300能够匹配于前述两种不同的音频接口1，使用时不需依赖额外的元器件，也不需额外的操作。
本发明的设计重点在于，相比传统的转换线路,该电子设备音频控制系统之结构及线路简单，节省空间及成本，同时不会造成输出与输入信号衰减及失真，维持了通讯的可靠性。通过将传统技术中的一个音频输入端子作为接地端，靠音频接口的相应音频输出电极输出零电位，令接地端得到参考零电位；并将传统技术中的接地端子与音频输出端子并联，使音频接口的音频输入电极无论与音频插头第一接点或第二接点接触均可形成音频输入，这样，使得电子设备的音频插头适配于两种不同标准的音频接口，其方法简单，便于推广应用。
以上所述，仅是本发明的较佳实施例而已，并非对本发明的技术范围作任何限制，故凡是依据本发明的技术实质对以上实施例所作的任何细微修改、等同变化与修饰，均仍属于本发明技术方案的范围内。

Claims (5)

1、一种电子设备音频控制系统，包括主控制器以及与主控制器连接的音频插头，该音频插头至少具有四个对应与音频接口的各电极电接触的接点，各接点沿音频插头插入方向依次定义为第一接点、第二接点、第三接点以及第四接点，其特征在于：所述第一接点与第二接点分别与主控制器连接的线路上连接有电阻器，各电阻器至对应接点的线路之间为短路连接，且该第一接点与第二接点由主控制器控制为音频输出模块；所述第三接点和第四接点的其中一接点为地线接点，另一接点为音频输入接点。
2、根据权利要求1所述电子设备音频控制系统，其特征在于：所述地线接点系用于与音频接口中输出零电位的左声道输出接点或右声道输出接点电接触的地线接点。
3、根据权利要求1所述电子设备音频控制系统，其特征在于：所述音频输入接点为左声道输入接点或右声道输入接点。
4、一种如权利要求1所述电子设备音频控制系统的控制方法，其特征在于：
（1）电子设备中音频插头至少具有四个对应与音频接口的各电极电接触的接点，各接点沿音频插头插入方向依次定义为第一接点、第二接点、第三接点以及第四接点；
（2）由主控制器控制第一接点、第二接点为音频输出模块，第一接点、第二接点连接于主控制器线路上分别设有电阻器，各电阻器至对应接点的线路为短路连接，使音频接口的音频输入电极无论与第一接点或第二接点接触均可形成音频输入；
（3）将第三接点、第四接点的其中一接点作为地线接点，而另一接点作为音频输入接点。
5、根据权利要求4所述的电子设备音频控制系统的控制方法，其特征在于：通过控制与上述音频插头对接的手机、平板计算机等对上述地线接点输出零电位，电子设备得到需要的零电位参考点，且与第一及第二接点的具体接法无关。
PCT/CN2012/078879 2012-07-19 2012-07-19 电子设备音频控制系统及其控制方法 WO2014012234A1 (zh)

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