WO2018228111A1 - Earphone, terminal and system - Google Patents

Abstract

An earphone, a terminal and a system. The earphone comprises an earphone jack, a left loudspeaker, a right loudspeaker and a first selection switch, wherein the earphone jack comprises a first ground end and a microphone, and the first selection switch comprises a first pin and a first common end; the microphone is electrically connected to the first pin; the left loudspeaker is electrically connected to the first ground end, and the right loudspeaker is electrically connected to the first common end; or the right loudspeaker is electrically connected to the first ground end, and the left loudspeaker is electrically connected to the first common end.

Description

Headset, terminal and system Technical field

The present application relates to, but is not limited to, the field of earphone technology, and in particular, to an earphone, a terminal, and a system.

Background technique

With the improvement of living standards, more and more people use headphones to connect to portable playback devices to watch movies and enjoy music. At present, the headphones on the market have left and right speakers, and the left and right speakers correspond to the left and right channels, and the signals between the left and right channels. The transmission channels are different, but share a single ground GND signal. The common impedance of the shared GND signal causes crosstalk between the left and right channel signals, causing distortion, so that the sound played through the headphones cannot be highly similar to the original sound, affecting the stereo effect of the sound, and it is difficult to satisfy the user's HIFI (High-Fidelity, high fidelity). The appeal of sound effects affects the user experience, so a pair of high-fidelity headphones is especially important.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiments of the present invention provide a headset, a terminal, and a system, which can avoid crosstalk caused by the left and right channels sharing the ground end to make the sound distorted.

The earphone provided by the embodiment of the invention includes an earphone plug, a left speaker, a right speaker and a first selection switch, the earphone plug includes a first ground end and a microphone, and the first selection switch includes a first pin and a first common end ;

The microphone and the first pin are electrically connected;

The left speaker and the first ground end are electrically connected, and the right speaker and the first common end are electrically connected;

Or the right speaker and the first ground end are electrically connected, and the left speaker and the first common end are electrically connected.

The first selection switch may further include a second pin, and the first ground end and the second pin are electrically connected.

The earphone may further include a microphone, the positive pole of the microphone and the microphone being electrically connected, and the negative pole and the second pin of the microphone are electrically connected.

The earphone plug may further include a first left channel and a first right channel, the positive pole of the left speaker and the first left channel being electrically connected, the positive pole of the right speaker and the first right sound Electrical connection.

In addition, the embodiment of the present invention further provides a terminal, where the terminal includes a headphone jack, a second ground end, and a second selection switch, the earphone jack includes a first pin and a second pin, and the second selection switch The second common terminal and the third pin are included;

The second ground end and the third pin are electrically connected;

The first pin and the second common end are electrically connected, and the second pin and the second ground are electrically connected.

The terminal may further include a codec module, the codec module further includes a microphone channel, the second selection switch further includes a fourth pin, and the mic channel and the fourth pin are electrically connected.

The codec module may include a second left channel and a second right channel, the earphone jack further includes a third pin and a fourth pin, and the third pin and the second right channel are electrically Connected, the fourth pin and the second left channel are electrically connected.

In addition, an embodiment of the present invention further provides a system, the system comprising an earphone and a terminal, wherein the earphone comprises an earphone plug, a left speaker, a right speaker and a first selection switch, the earphone plug comprising a first ground end and a microphone The first selection switch includes a first pin and a first common end;

The microphone and the first pin are electrically connected;

The left speaker and the first ground end are electrically connected, and the right speaker and the first common end are electrically connected;

Or the right speaker and the first ground end are electrically connected, and the left speaker and the first common end are electrically connected;

The terminal includes a headphone jack, a second ground end and a second selection switch, the earphone jack includes a first pin and a second pin, and the second selection switch includes a second common end and a third pin;

The second ground end and the third pin are electrically connected;

The first pin and the second common end are electrically connected, and the second pin and the second ground are electrically connected.

In the embodiment of the present invention, the earphone includes an earphone plug, a left speaker, a right speaker and a first selection switch, the earphone plug includes a first ground end and a microphone, and the first selection switch includes a first pin and a first a common end; the microphone and the first pin are electrically connected; the left speaker and the first ground end are electrically connected, the right speaker and the first common end are electrically connected; or The right speaker and the first ground end are electrically connected, and the left speaker and the first common end are electrically connected. In the embodiment of the present invention, the first selection switch connected to the right speaker and the microphone is used to multiplex the microphone into the ground to form a ground loop of the right speaker, and the left speaker and the first ground end are electrically connected to form a ground loop of the left speaker. Therefore, the ground loops of the left and right speakers are separated, the left and right speakers are prevented from sharing the ground loop, signal crosstalk is generated, the sound is distorted, and high-fidelity sound quality is played.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic diagram of a headset connection according to an embodiment of the present invention;

2 is a schematic diagram of terminal connection according to an embodiment of the present invention;

3 is a schematic diagram of system signal transmission in accordance with an embodiment of the present invention.

Description of the reference numerals:

Label name Label name 110 Headphone plug 210 Codec module 111 First ground 211 Second left channel 112 Mike 212 Second right channel 113 First left channel 220 Second ground 114 First right channel 230 Second selector switch

120 First selector switch 231 Fourth pin 121 Second pin 232 Third pin 122 First pin 233 Second public end 123 First public end 240 Headphone jack 130 Left speaker 241 First stitch 140 Right speaker 242 Second stitch 150 microphone 243 Third stitch 244 Fourth stitch

Embodiments of the invention

The embodiments of the present invention will be described in detail with reference to the accompanying drawings in the claims All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back, ...) in the embodiments of the present invention are only used to explain the relative relationship between components in a specific posture (as shown in the drawing). The positional relationship, the motion situation, and the like, if the specific posture changes, the directional indication also changes accordingly.

In addition, the descriptions of "first", "second", and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In the present invention, the terms "connected", "fixed" and the like should be understood broadly, unless otherwise clearly defined and limited. For example, "fixed" may be a fixed connection, or may be a detachable connection, or may be integrated; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two components or an interaction relationship of two components unless explicitly defined otherwise. For those of ordinary skill in the art, the meaning of the above terms in the present invention can be understood on a case-by-case basis.

In addition, the technical solutions between the various embodiments of the present invention may be combined with each other, but must be based on the realization of those skilled in the art, and the combination of technical solutions should be considered when the combination of technical solutions is contradictory or impossible to implement. It does not exist and is not within the scope of protection required by the present invention.

The embodiment of the invention provides an earphone.

Referring to FIG. 1 , in the embodiment of the present invention, the earphone includes an earphone plug 110 , a left speaker 130 , a right speaker 140 , and a first selection switch 120 . The earphone plug 110 includes a first ground end 111 and a microphone 112. The first selection switch 120 includes a first pin 122 and a first common end 123; the microphone 112 and the first pin 122 are electrically connected; the left speaker 130 and the first ground end 111 are electrically connected The right speaker 140 and the first common end 123 are electrically connected; or the right speaker 140 and the first ground end 111 are electrically connected, and the left speaker 130 and the first common end 123 are electrically connected. .

The earphone of the embodiment of the invention comprises an earphone plug 110, a left speaker 130, a right speaker 140 and a first selection switch 120. The earphone plug 110 is arranged to be plugged into the earphone jack of the playing device, and the left speaker 130 and the right speaker 140 are set to Playback of the playback device. The earphone plug 110 includes a first ground end 111 and a microphone 112. The first selection switch 120 includes a first pin 122 and a first common terminal 123. The first grounding end 111 and the left horn 130 are electrically connected to form a grounding circuit of the left horn 130, and the right horn 140 and the first common end 123 of the first selection switch 120 are electrically connected, and the mic 112 and the first selection switch 120 are electrically connected. A pin 122 is electrically connected to multiplex the mic 112 to the ground, and the first selection switch 120 is turned on to form a ground loop of the right horn 140, the first common terminal 123, the first pin 122, and the mic 112, thereby The ground loops of the left horn 130 and the right horn 140 are separated. In addition, the first ground terminal 111 and the right speaker 140 are electrically connected to form a ground loop of the right speaker 140, and the left speaker 130 and the first common terminal 123 of the first selection switch 120 are electrically connected, and the microphone 112 and the first The first pin 122 of the selection switch 120 is electrically connected, the mic 112 is multiplexed to the ground, and the first selection switch 120 is turned on to form the left horn 130, the first common terminal 123, the first pin 122, and the mic 112. The ground loop is such that the ground loops of the left horn 130 and the right horn 140 are separated. By setting the first selection switch 120, the mic 112 is multiplexed into the ground, the left horn 130 is connected to the first ground end 111, and the right horn 140 is connected to the mic 112 or the right horn 140 through the first selection switch 120 to the first The grounding end 111, the left horn 130 is connected to the mic 112 through the first selection switch 120, thereby separating the grounding loops of the left and right horns, avoiding sound distortion caused by crosstalk between signals, and realizing high fidelity sound quality playback.

The first selection switch 120 can further include a second pin 121, and the first ground end 111 and the second pin 121 are electrically connected.

In this embodiment, the first selection switch may further include a second pin 121, and the first ground end 111 and the second pin 121 are electrically connected. Therefore, the first common terminal 123 of the first selection switch may be connected to the first pin 121 or the second pin 122. When connected to the second pin 121, the first common terminal 123 and the second pin are formed. 121 and a ground loop between the first ground terminals 111. That is, the grounding circuit is formed by the first selection switch 120 and the first grounding end 111, and the mic 112 is not multiplexed into the grounding end, and the left horn 130 and the right horn 140 are both connected to the first grounding end 111 to realize normal playing of the left and right horns. And the normal mode playback of Mike's pickup function.

When the left speaker 130 and the first ground terminal 111 are electrically connected, and in the normal mode, the first common terminal 123 and the second pin 121 of the first selection switch 120 are turned on, so that the right speaker 140 passes through the first common terminal. A line connecting 123 and the second pin 121 is connected to the first ground terminal 111. The left speaker 130 and the right speaker 140 are both connected to the first ground terminal 111, and the normal playback of the left speaker 130 and the right speaker 140 and the pickup function of the microphone 112 are realized. When the high-fidelity mode is played, the first common terminal 123 of the first selection switch 120 and the first pin 122 are turned on, so that the right speaker 140 is connected to the microphone 112 through the line connected by the first common terminal 123 and the first pin 122. At this time, the mic 112 is multiplexed into the grounding end, the right horn 140 forms a grounding loop with the mic 112 through the first selection switch 120, and the left horn 130 forms a grounding loop through the first grounding end 111, thereby grounding the left horn 130 and the right horn 140. The loops are separated, eliminating crosstalk between the left and right channels, enabling high-fidelity sound quality playback. When the right speaker 140 and the first ground terminal 111 are electrically connected, and in the normal mode, the first common terminal 123 and the second pin 121 of the first selection switch 120 are turned on, so that the left speaker 130 passes the first common The line in which the terminal 123 and the second pin 121 are turned on is connected to the first ground terminal 111. The left speaker 130 and the right speaker 140 are both connected to the first ground terminal 111, and the normal playback of the left speaker 130 and the right speaker 140 and the pickup function of the microphone 112 are realized. When the high-fidelity mode is played, the first common terminal 123 of the first selection switch 120 and the first pin 122 are turned on, so that the left speaker 130 is connected to the microphone 112 through the line connected by the first common terminal 123 and the first pin 122. At this time, the microphone 112 is multiplexed into the ground terminal, the left horn 130 forms a ground loop with the mic 112 through the first selection switch 120, and the right horn 140 forms a ground loop through the first ground end 111, thereby grounding the left horn 130 and the right horn 140. The loops are separated, eliminating crosstalk between the left and right channels, enabling high-fidelity sound quality playback.

The first selection switch 120 can be a two-position switch, a first gear position is formed between the first pin 122 and the first common end 123, and a second gear position is formed between the second pin 121 and the first common end 123. The first gear is the high-quality playback mode, and the second gear is the normal playback mode of the left and right speakers and the normal playback mode of the microphone pickup. In the default state, the first selection switch 120 is in the second gear position, that is, the first common terminal 123 and the second pin 121 are turned on, and is disconnected from the first pin 122 to form the first selection switch 120 and the first ground. The path of the terminal 111, and the disconnection of the microphone 112, the earphone is in the normal play mode. In another embodiment, the first selection switch 120 can also be a three-position switch, and there is a neutral position in addition to the first gear position and the second gear position. In the default state, the first selection switch 120 is in the neutral position. Bit, the headset is not in normal playback mode and is not in high fidelity playback mode. A neutral bit is set, the first common terminal 123 and the neutral pin are turned on, and the first pin 122 and the second pin 121 are both disconnected, so that the first selection switch 120 is in the neutral position, and the user It is actually necessary to select the first gear or the second gear. The first selection switch 120 can be a mechanical toggle switch or an electronic switch. When it is a toggle switch, different paths can be turned on by external dialing; when it is an electronic switch, it is passed through the headset. The connection of the different paths of the first selection switch 120 is selected on the connected playback device.

The earphone may further include a microphone 150. The positive pole of the microphone 150 and the microphone 112 are electrically connected, and the negative pole of the microphone 150 and the second pin 121 are electrically connected. In order to realize the pickup function of the microphone 112, the earphone further includes a microphone 150 to convert an external sound signal into an electrical signal. The positive pole of the microphone 150 is electrically connected to the microphone 112 on the earphone plug 110. The negative pole of the microphone 150 is electrically connected to the second pin 121. The second pin 121 and the first ground end 111 are electrically connected, so that the microphone 150 is connected. The negative electrode is substantially electrically connected to the first ground terminal 111. In normal mode playback, the first common terminal 123 and the second pin 121 of the first selection switch 120 are turned on, and the left speaker 130, the right speaker 140, and the microphone 150 are both connected to the first ground terminal 111, sharing a ground loop, and a microphone. The positive pole of the 150 is electrically connected to the microphone 112, and the external sound signal is converted into an electrical signal to realize pickup. In high-fidelity mode playback, the first common terminal 123 of the first selection switch 120 and the first pin 122 are turned on, the left speaker 130 is connected to the first ground terminal 111, and the right speaker 140 is passed through the first selection switch 120 and the microphone 112. The connection is made to use the microphone 112 as a grounding end to shield the signal transmission between the microphone 112 and the microphone 150. The external sound signal cannot be picked up by the microphone 150 to form different ground loops of the left and right speakers, thereby realizing high-fidelity sound quality playback.

The earphone plug 110 may further include a first left channel 113 and a first right channel 114. The anode of the left speaker 130 and the first left channel 113 are electrically connected, and the positive pole of the right speaker 140 The first right channel 114 is electrically connected.

For the purpose of playing the playback device, the first left channel 113 and the first right channel 114 may be further included on the earphone plug 110, and the first left channel 113 and the left speaker 130 are electrically connected to each other. A right channel 114 and a right speaker 140 are positively connected. When the normal mode is played, the first selection switch 120 and the first ground terminal 111 are turned on, and the first ground terminal 111 is used as the first left channel 113 of the earphone, and the first right sound is used. The common ground of the track 114 and the microphone 112 forms a loop of the first left channel 113 to the left speaker 130 and the first ground terminal 111, a loop of the first right channel 114 to the right speaker 140 and the first ground terminal 111, and The circuit of the microphone 112 to the microphone 150 and the first ground terminal 111 realizes the normal play of the left and right channels of the earphone and the pickup function of the microphone 112. When the high-fidelity mode is played, the first selection switch 120 and the microphone 112 are turned on, and the microphone 112 on the earphone plug 110 is multiplexed into the ground, forming a loop of the first left channel 113 to the left speaker 130 and the first ground terminal 111. The first right channel 114 to the right speaker 140 are further connected to the circuit of the first selection switch 120 and the microphone 112, and the microphone 112 is multiplexed into the ground terminal to form a ground loop of the right speaker 140, and the left speaker 130 and the right speaker 140 are realized. The ground loops are separated to eliminate crosstalk between the left and right channels for high-fidelity sound quality playback.

The embodiment of the present invention further provides a terminal. Referring to FIG. 2, in the embodiment of the present invention, the terminal includes a headphone jack 240, a second ground end 220, and a second selection switch 230. a second pin 232 and a third pin 232; the second ground terminal 220 and the third pin 232 are electrically connected; The first pin 241 and the second common end 233 are electrically connected, and the second pin 242 and the second ground end 220 are electrically connected.

The terminal in the embodiment of the present invention may be a mobile phone, a computer, a tablet, an iPad, an MP3, an MP4, and the like, and supports a terminal for performing sound output playback through the earphone. The terminal includes a headphone jack 240, a second grounding terminal 220 and a second selection switch 230 that are configured to connect the earphone plug 110, and the earphone jack 240 includes a first pin 241 and a second pin 242, and the second selection switch 230 includes a The second common terminal 233 and the third pin 232 are electrically connected, and the first pin 241 and the second common end 233 are electrically connected. When the second selection switch 230 is turned on, Forming a ground loop of the first pin 241, the second common end 233, the third pin 232, and the second ground end 220; the second pin 242 and the second ground end 220 are electrically connected to form the second pin 242 to the second ground Ground loop of terminal 220. That is, the earphone jack 240 connected to the earphone plug 110 has two different ground loops. After being connected with the earphone plug 110, a separate ground loop of the left and right speakers can be formed to separate the ground loops of the left and right speakers to avoid the sound generated by crosstalk between signals. Distortion, high-fidelity sound quality playback.

The terminal may further include a codec module 210, the codec module 210 includes a mic channel, the second selection switch 230 further includes a fourth pin 231, and the mic channel and the fourth pin 231 are electrically Sexual connection.

Also included on the terminal is a codec module 210, which is a module that can encode and decode audio, including a microphone channel, to be configured to pass the sound signal picked up by the microphone 112 to the codec module 210. The mic channel and the fourth pin 231 are electrically connected. When the second common terminal 233 and the fourth pin 231 of the second selection switch 230 are turned on, a transfer path of the mic signal is formed. At this time, the second common terminal 233 and the third pin 232 are disconnected, and the terminal only has a ground loop between the second pin 242 and the second ground terminal 220, so that the left and right speakers share the ground loop, and the normal playback of the left and right speakers can be realized. And the pickup function of the microphone 112.

The third pin 232 and the fourth pin 231 of the second selection switch 230 of the present solution are electrically connected to the codec module 210 and the second ground terminal 220, respectively, to form a two-speed switch, a third pin 232 and a second common A first gear position is formed between the ends 233, and a second gear position is formed between the fourth pin 231 and the second common end 233. The first gear work or the second gear work can be determined by the virtual switch state on the terminal, and the play mode selection switch can be set on the terminal setting interface. When the normal mode play is selected, the second gear works, when selecting high fidelity When the mode is playing, the first gear works. The turning on of the second selection switch 230 and the second ground terminal 220 or the turning on of the second selection switch 230 and the codec module 210 is thereby achieved by selection. The second selection switch 230 is an electronic analog switch, and the different paths of the second selection switch 230 are turned on by a virtual button provided on the terminal. When the normal mode play is required, the second selection switch 230 and the codec module 210 are turned on to form a channel for transmitting the microphone signal, and are disconnected from the second ground terminal 220, and the second ground terminal 220 is used as the left and right channels of the earphone. The common ground terminal realizes the normal play of the left and right channels of the earphone and the pickup function of the microphone 112. When the high-fidelity mode is required to be played, the second selection switch 230 and the second ground terminal 220 are turned on, and are disconnected from the codec module 210 to form a ground loop of the second selection switch 230 and the second ground terminal 220. The ground loops of the channels are separated to eliminate crosstalk between the left and right channels for high-fidelity sound quality playback.

The codec module 210 may include a second left channel 211 and a second right channel 212, and the earphone jack 240 further includes a third pin 243 and a fourth pin 244, the third pin 243 and the The second right channel 212 is electrically connected, and the fourth pin 244 and the second left channel 211 are electrically connected.

The codec module 210 may include a second left channel 211 and a second right channel 212 to convert the sound output of the left speaker 130 and the sound output of the right speaker 140 to electrical signals. The third pin 243 and the second pin 244 are electrically connected to the earphone jack 240, and the fourth pin 244 and the second left channel 211 are electrically connected. When playing in the normal mode, the second left channel 211 on the codec module 210 forms a loop through the fourth pin 244, the second pin 242, and the second ground terminal 220, and converts the electrical signal into an acoustic signal output of the left speaker 130; At the same time, the second right channel 212 on the codec module 210 forms a loop through the third pin 243, the second pin 242 and the second ground terminal 220, and converts the electrical signal into an acoustic signal output of the right speaker 140; The first pin 241 on the second loop 231 of the second selection switch 230 forms a loop, and the external sound signal picked up by the microphone 150 is converted into an electrical signal and transmitted to the codec module 210. When playing in the high fidelity mode, the second common terminal 233 and the third pin 232 of the second selection switch 230 are turned on to form one grounding channel of the second selection switch 230; the second pin 242 and the second ground terminal 220 are electrically connected. Connecting, forming another grounding channel; the second left channel 211 on the codec module 210 forms a loop through the fourth pin 244, the second pin 242, and the second ground terminal 220, and converts the electrical signal into an acoustic signal of the left speaker 130. The second right channel 212 at the upper end of the codec module 210 forms a loop through the third pin 243, the first pin 241, the second selection switch 230, and the second ground terminal 220, and converts the electrical signal into the sound of the right speaker 140. The signal is output, because the third pin 232 of the second selection switch 230 is turned on, and the fourth pin 231 is turned off, so that the microphone signal transmission cannot be performed. Or in another embodiment, the second left channel 211 on the codec module 210 forms a loop through the fourth pin 244, the first pin 241, the second selection switch 230, and the second ground terminal 220, converting the electrical signal into The sound signal of the left speaker 130 is output; at the same time, the second right channel 212 of the upper end of the codec module 210 forms a loop through the third pin 243, the second pin 242 and the second ground terminal 220, and converts the electrical signal into the sound of the right speaker 140. Signal output; the sound signal output ground loop of the left speaker 130 and the right speaker 140 are separated, eliminating crosstalk between the left and right channels, and achieving high-fidelity sound quality playback.

The embodiment of the invention further provides a system, in the embodiment of the invention, the system comprises an earphone and a terminal, wherein the earphone comprises an earphone plug 110, a left speaker 130, a right speaker 140 and a first selection switch 120, the earphone The plug 110 includes a first ground end 111 and a mic 112, the first select switch 120 includes a first pin 122 and a first common end 123; the mic 112 and the first pin 122 are electrically connected; The left speaker 130 and the first ground terminal 111 are electrically connected, the right speaker 140 and the first common terminal 123 are electrically connected; or the right speaker 140 and the first ground terminal 111 are electrically connected, The left speaker 130 and the first common end 123 are electrically connected;

The terminal includes a headphone jack 240, a second ground end 220, and a second selection switch 230. The headphone jack 240 includes a first pin 241 and a second pin 242, and the second selection switch 230 includes a second common end. 233 and the third pin 232; the second ground terminal 220 and the third pin 232 are electrically connected; the first pin 241 and the second common end 233 are electrically connected, the second pin The 241 and the second ground end 220 are electrically connected.

The earphones of the embodiment of the present invention are used together with the terminal to form a system for switching between normal mode playback of the earphone and high-fidelity mode playback. In the normal mode playback, the normal playback of the left and right channels of the headphones and the pickup function of the microphone 112 can be realized. When playing in high-fidelity mode, the ground loops of the left and right channels can be separated to eliminate crosstalk between the left and right channels, enabling high-fidelity sound quality playback. In an embodiment, the switch on the earphone is a mechanical switch that needs to be manually toggled, and the terminal is provided with a play mode selection interface. Referring to FIG. 3, enter the terminal selection interface to select the earphone mode, and determine whether the selected earphone mode is high fidelity. Playing, when in the high fidelity mode, turning on the second common end 233 and the third pin 232 of the second selection switch, and displaying a prompt message on the terminal interface to prompt the user to select the corresponding switch on the earphone as High-fidelity mode playback, after detecting that the user selects the headset to play in high-fidelity mode, completes the switching of high-fidelity mode, realizes different signal transmission loops of the left and right channels, transmits sound signals, and avoids signal crosstalk distortion. When the mode is not the high fidelity mode, that is, the normal mode, the second common terminal 233 and the fourth pin 231 of the second selection switch are turned on, and a prompt message is displayed on the terminal interface to prompt the user to switch the switch on the earphone. Select to play in normal mode. After detecting that the user selects the headset to play in normal mode, the normal mode is switched, and the left and right channels share the ground loop to transmit the sound signal. In another embodiment, the switch on the headset is an electronic switch that can be controlled by a chip program on the terminal. After selecting normal play or high-fidelity play on the terminal, the terminal uses the selection information as a trigger signal of the switch on the earphone, and switches the switch on the earphone to the normal mode play or the high-fidelity mode play, so as to realize the normal play of the left and right channels. And the microphone 112's pickup function, or the left and right channels are used to transmit sound signals with different signal transmission loops. In other embodiments, the play mode can be selected through the switch on the earphone, and after the switch selects normal play or high fidelity play on the earphone, the earphone selects the selection information as a trigger signal of the switch on the terminal, and switches the terminal to the normal mode. Or high-fidelity mode playback to achieve normal playback of the left and right channels and the pickup function of the microphone 112, or to implement different signal transmission loops for the left and right channels to transmit sound signals.

When in the normal play mode, the switch on the terminal is connected to the pin of the codec module 210 to realize the transmission of the microphone signal, and the left and right channels share the ground end to realize the normal play of the left and right channels. The switch on the earphone is connected to the ground end, and the left and right channels and the microphone 150 share the ground end to realize the normal play of the left and right channels and the pickup function of the microphone 112. When in high-fidelity playback mode, the switch on the terminal is connected to the ground to separate the left and right channel ground loops. The switch on the corresponding earphone is connected to the microphone 112, and is used as a ground loop to realize separation of the left and right acoustic ground loops, thereby eliminating crosstalk generated by the left and right channels sharing the ground loop, thereby realizing high fidelity sound quality playback.

The above description is only an optional embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structural transformation or direct/indirect use of the specification and the drawings of the present invention under the concept of the present invention. It is included in the scope of the patent protection of the present invention in other related technical fields.

Industrial applicability

The embodiment of the invention can separate the grounding loops of the left and right horns, avoiding the common loop of the left and right horns, generating signal crosstalk, distorting the sound, and realizing high-fidelity sound quality playback.

Claims (8)

An earphone comprising an earphone plug, a left speaker, a right speaker and a first selection switch, the earphone plug comprising a first ground end and a microphone, the first selection switch comprising a first pin and a first common end ; The microphone and the first pin are electrically connected; The left speaker and the first ground end are electrically connected, and the right speaker and the first common end are electrically connected; Or the right speaker and the first ground end are electrically connected, and the left speaker and the first common end are electrically connected. The earphone of claim 1, wherein the first selection switch further comprises a second pin, the first ground end and the second pin being electrically connected. The earphone according to claim 2, further comprising a microphone, wherein a positive pole of the microphone and the microphone are electrically connected, and a negative pole and a second pin of the microphone are electrically connected. The earphone according to any one of claims 1 to 3, wherein the earphone plug further comprises a first left channel and a first right channel, a positive pole of the left speaker and the first left channel electrical property Connected, the positive pole of the right horn and the first right channel are electrically connected. A terminal comprising a headphone jack, a second ground end and a second selection switch, the earphone jack comprising a first pin and a second pin, the second selection switch comprising a second common end and a third Pin The second ground end and the third pin are electrically connected; The first pin and the second common end are electrically connected, and the second pin and the second ground are electrically connected. The terminal of claim 5, the terminal further comprising a codec module, the codec module comprising a microphone channel, the second selection switch further comprising a fourth pin, the mic channel and the fourth The pins are electrically connected. The terminal of claim 6, wherein the codec module further comprises a second left channel and a second right channel, the earphone jack further comprising a third pin and a fourth pin, the third The pin and the second right channel are electrically connected, and the fourth pin and the second left channel are electrically connected. A system comprising an earphone and a terminal, wherein the earphone comprises an earphone plug, a left speaker, a right speaker and a first selection switch, the earphone plug comprising a first ground end and a microphone, the first selection switch comprising a first pin and a first common end; The microphone and the first pin are electrically connected; The left speaker and the first ground end are electrically connected, and the right speaker and the first common end are electrically connected; Or the right speaker and the first ground end are electrically connected, and the left speaker and the first common end are electrically connected; The terminal includes a headphone jack, a second ground end and a second selection switch, the earphone jack includes a first pin and a second pin, and the second selection switch includes a second common end and a third pin; The second ground end and the third pin are electrically connected; The first pin and the second common end are electrically connected, and the second pin and the second ground are electrically connected.

Images