Disclosure of Invention
The technical problem to be solved by the embodiment of the application is that the existing earphone cannot reach higher waterproof and dustproof grades and cannot realize the requirement of data transmission.
In order to solve the above technical problems, the embodiments of the present application provide an earphone, which adopts the following technical schemes:
an earphone comprises a USB-C socket, a switching circuit and a control circuit;
the USB-C socket is provided with an idle pin, and the idle pin is used for transmitting audio signals or data signals and comprises an A2 pin, an A3 pin, an A8 pin, an A10 pin, an A11 pin, a B2 pin, a B3 pin, a B8 pin, a B10 pin and a B11 pin;
the USB-C socket is electrically connected with the control circuit;
the switching circuit is connected between the USB-C socket and the control circuit and is used for controlling the idle pin to output an audio signal or a data signal to the control circuit, so as to control the earphone to be switched to an audio signal transmission state or a data transmission state.
Further, the switching circuit comprises a signal input end, a change-over switch, an audio signal output end and a data signal output end;
the signal input end is electrically connected with the idle pin;
one end of the change-over switch is electrically connected with the signal input end, and the other end of the change-over switch is electrically connected with the audio signal output end or the data signal output end;
the audio signal transmission end and the data signal transmission end are electrically connected with the control circuit.
Further, the signal input end comprises a positive input end and a negative input end;
the A2 pin is electrically connected with the positive input end after being connected with the B2 pin in parallel;
the A3 pin is connected with the B3 pin in parallel and then is electrically connected with the negative input end.
Further, the control circuit is electrically connected with the change-over switch;
and the control circuit controls the change-over switch to be switched to the audio signal output end or the data signal output end according to the input signal of the USB-C socket.
Further, the control circuit comprises a GPI0 pin, a MIC signal input pin and a GND analog ground input pin;
the A8 pin is electrically connected with the GPI0 pin after being connected with the B8 pin in parallel, and the A8 pin and the B8 pin are used for inputting an audio access signal;
the control circuit is electrically connected with the switching circuit through the GPI0 pin and is used for controlling the switching switch to the audio signal output end or the data signal output end;
the A10 pin and the B10 pin are connected in parallel and then electrically connected with the MIC signal input pin, and the A10 pin and the B10 pin are used for inputting MIC signals;
the A11 pin is connected with the B11 pin in parallel and then connected with the GND analog ground input pin.
Further, the earphone further comprises an analog audio circuit, and the analog audio circuit is electrically connected between the audio signal output end and the control circuit.
In order to solve the above technical problems, the embodiment of the present application further provides an patch cord, which adopts the following technical scheme:
a patch cord for connecting with an earphone as described above, comprising a USB-C plug and a device plug;
the USB-C plug is electrically connected with the equipment plug;
the patch cord is electrically connected with the earphone through the USB-C plug and the USB-C socket.
Further, the equipment plug is a 3.5mm plug, and a left channel signal end, a right channel signal end, a microphone signal end and a grounding signal end are arranged on the equipment plug;
the USB-C plug comprises an SSTXP1 pin, an SSTXP2 pin, an SSTXN1 pin, an SSTXN2 pin, an SBU1 pin, an SBU2 pin, an SSRXN1 pin, an SSRXN2 pin, an SSRXP1 pin and an SSRXP2 pin;
the SSTXP1 pin is connected with the SSTXP2 pin in parallel and then is electrically connected with the left channel signal end;
the SSTXN1 pin is connected with the SSTXN2 pin in parallel and then is electrically connected with the right channel signal end;
the SSRXN1 pin is connected with the SSRXN2 pin in parallel and then is electrically connected with the microphone signal end;
the SBU1 pin, the SBU2 pin and the SSRXP1 pin are connected in parallel with the SSRXP2 pin and then are electrically connected with the grounding signal end.
The embodiment of the application also provides audio equipment, which adopts the following technical scheme:
an audio device comprising a headset as described above and a patch cord as described above;
the patch cord is detachably inserted on the earphone, and the electrical connection between the patch cord and the earphone is realized through the insertion of the USB-C plug and the USB-C socket.
Compared with the prior art, the embodiment of the application has the following main beneficial effects:
according to the embodiment of the application, the USB-C socket is used as the signal input end, so that the stacking space in the earphone can be saved, the manufacturing process of the earphone is simplified, and the waterproof and dustproof effects of the signal input end during plugging can be improved; the idle pins of the USB-C socket are used as signal input ends, so that the pin utilization rate of the USB-C socket is improved, and the earphone has the functions of audio transmission and data transmission.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In order to better understand the technical solutions of the present application, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings.
Embodiments of the earphone of the present application
Referring to fig. 1, an embodiment of the present application provides an earphone, including: a USB-C socket 11, a switching circuit 12 and a control circuit 13.
The USB-C socket 11 is provided with an idle pin, and the idle pin is used for inputting an audio signal or a data signal and comprises an A2 pin, an A3 pin, an A8 pin, an A10 pin, an A11 pin, a B2 pin, a B3 pin, a B8 pin, a B10 pin and a B11 pin; the USB-C socket is electrically connected with the control circuit; the switching circuit 12 is connected between the USB-C socket 11 and the control circuit 13, and is configured to control the idle pin to output an audio signal or a data signal to the control circuit 13, so as to control the earphone to switch to an audio signal transmission state or a data transmission state. In this embodiment, the USB-C receptacle 11 includes two rows of pins, wherein one row is identified as row a and the other row is identified as row B.
Referring to fig. 2, in this embodiment, the pins of row a are sequentially arranged from top to bottom according to pins A1 to pins a12, and sequentially: a1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11 and A12, wherein the A1 pin corresponds to a first GND end, the A2 pin corresponds to an SSTXP1 end, the A3 pin corresponds to an SSTXN1 end, the A4 pin corresponds to a first VBUS end, the A5 pin corresponds to a CC1 end, the A6 pin corresponds to a DP1 end, the A7 pin corresponds to a DN1 end, the A8 pin corresponds to an SBU1 end, the A9 pin corresponds to a second VBUS end, the A10 pin corresponds to an SSRXN2 end, and the A11 pin corresponds to a second GND end.
Referring to fig. 2 again, in this embodiment, the pins of the B row are sequentially arranged from top to bottom according to the pins B12 to B1, and sequentially: b12, B11, B10, B9, B8, B7, B6, B5, B4, B3, B2 and B1, wherein the B1 pin corresponds to the third GND end, the B2 pin corresponds to the STXP2 end, the B3 pin corresponds to the SSTXN2 end, the B4 pin corresponds to the third VBUS end, the B5 pin corresponds to the CC2 end, the B6 pin corresponds to the DP2 end, the B7 pin corresponds to the DN2 end, the B8 pin corresponds to the SBU2 end, the B9 pin corresponds to the fourth VBUS end, the B10 pin corresponds to the SSRXN1 end, the B11 pin corresponds to the SSTRXP1 end, and the B12 pin corresponds to the fourth GND end.
In this embodiment, the pin A1, the pin a12, the pin B1 and the pin B12 are connected in parallel and then grounded, which is used as the grounding end of the USB-C socket 11; the pin A4, the pin A9 and the pin B4 are connected with the pin B9 IN parallel and then connected with the power input end VBUS_IN to serve as a power bus of the USB-C socket 11.
The A5 pin and the B5 pin are respectively grounded and used for detection and configuration.
The pin A6 and the pin B6 are connected in parallel and then connected with the positive signal output end DP_USB of the USB data.
The pin A7 and the pin B7 are connected in parallel and then connected with a USB data negative signal output end DM_USB.
In this embodiment, the idle pins include an A2 pin, an A3 pin, an A8 pin, an a10 pin, an a11 pin, a B2 pin, a B3 pin, a B8 pin, a B10 pin, and a B11 pin.
According to the earphone provided by the embodiment of the application, the USB-C socket 11 is used for replacing a 3.5mm socket hole of an existing earphone to serve as a signal input end, so that the internal stacking space of the earphone is saved, the manufacturing process of the earphone is simplified, and compared with the 3.5mm socket hole, the USB-C socket 11 has better waterproof and dustproof effects after being connected with an adapter wire, and the service life of the earphone is prolonged; in addition, the idle pins of the USB-C socket 11 are used as signal input ends for introducing audio signals and data signals, so that the pin utilization rate of the USB-C socket 11 is improved, the earphone has the functions of audio transmission and data transmission, the internal space of the earphone can be saved, the number of holes is reduced, and the earphone is more attractive.
Referring to fig. 3, the switching circuit 12 includes a signal input terminal, a switch, an audio signal output terminal and a data signal output terminal.
Referring to fig. 2 and 3, in some embodiments, the signal input is electrically connected to the idle pin,
in this embodiment, the signal input end includes a positive input end d+ and a negative input end D-, the A2 pin is electrically connected with the hp_lp_aux end after being connected in parallel with the B2 pin, and the hp_lp_aux end is electrically connected with the positive input end d+; the A3 pin and the B3 pin are connected in parallel and then electrically connected with an HP_RP_AUXIN end, and the HP_RP_AUXIN end is electrically connected with the negative input end D-.
Referring to fig. 3, one end of the switch is electrically connected to the signal input end, and the other end is electrically connected to the audio signal output end or the data signal output end, in this embodiment, the switch is a double-pole double-throw switch, the audio signal output end includes a first positive output end d1+ and a first negative output end D1-, the data signal output end includes a second positive output end d2+ and a second negative output end D2-, the double-pole double-throw switch is connected to the signal input end, one set of joints of the double-pole double-throw switch is respectively connected to the first positive output end d1+ and the first negative output end D1-, and the other set of joints of the double-pole double-throw switch is respectively connected to the second positive output end d2+ and the second negative output end D2-.
Referring back to fig. 3, the audio signal transmitting end and the data signal transmitting end are electrically connected to the control circuit 13, in this embodiment, the first positive output end d1+ is connected to the audio left channel signal end lp_auxin, the first negative output end D1-is connected to the audio right channel signal end rp_auxin, wherein the audio left channel signal end lp_auxin and the audio right channel signal end rp_auxin are respectively connected to the control circuit 13 to realize the transmission of the audio signal to the control circuit 13; the second positive output end d2+ is connected with the USB data positive signal output end dp_usb, and the second negative output end D2-is connected with the USB data negative signal output end dm_usb, where the USB data positive signal output end dp_usb and the USB data negative signal output end dm_usb are respectively connected with the control circuit 13, so as to realize that the data signal is transmitted to the control circuit 13.
In this embodiment, the switching circuit 12 further includes a ground GND and a power supply input VCC electrically connected to a power supply.
According to the embodiment of the application, the idle pin of the USB-C socket 11 is electrically connected with the signal input end of the switching circuit 12, and data signals or audio signals are transmitted to the signal input end of the switching circuit 12 through the A2 pin, the A3 pin, the B2 pin and the B3 pin; and the control circuit 13 receives the corresponding signals and then controls the earphone to switch to the audio signal transmission state or the data transmission state.
Referring to fig. 1, in some embodiments, the control circuit 13 is electrically connected to the switch, and the control circuit 13 is electrically connected to the USB-C socket 11; the control circuit 13 controls the change-over switch to the audio signal output end or the data signal output end according to the input signal of the USB-C socket 11.
In this embodiment, the control circuit 13 includes a GPI0 pin (not shown in the figure).
Referring to fig. 2, the A8 pin is electrically connected to the GPI0 pin after being connected in parallel with the B8 pin, and the A8 pin and the B8 pin are used for inputting an audio access signal, in this embodiment, the A8 pin is connected to the micp_usb end after being connected in parallel with the B8 pin, and the micp_usb end is connected to the GPI0 pin of the control circuit 13 and is used for inputting an audio access signal.
Referring to fig. 3, the control circuit 3 is electrically connected to the switching circuit 12 through the GPI0 pin, and is used for controlling the switch to the audio signal output end or the data signal output end, in this embodiment, the switching circuit 12 further includes a switch control circuit, and the switch control circuit is electrically connected to the GPI0 pin of the control circuit 13.
In this embodiment, the control circuit 13 controls the change-over switch to the audio signal output terminal or the data signal output terminal according to the following working principle:
when the USB-C socket 11 inputs an audio signal, the A8 pin and the B8 pin receive the signal and input an audio access signal to the control circuit 13, the control circuit 13 controls the switch control circuit to be conducted after receiving the audio access signal, so that the double-pole double-throw switch is connected with the first positive output end D1+ and the first negative output end D1-, the switching circuit 12 transmits the audio signal of the USB-C socket 11 to the control circuit 13, and the control circuit 13 controls the earphone to be switched to an audio signal transmission state.
When the USB-C socket 11 inputs a data signal, the A8 pin and the B8 pin are not connected with each other, the control circuit 13 controls the switch control circuit to be disconnected, so that the double-pole double-throw switch is connected with the second positive output end D < 2+ > and the second negative output end D < 2 > -and the switching circuit 12 transmits the data signal of the USB-C socket 11 to the control circuit 13, and the control circuit 13 controls the earphone to be switched to a data signal transmission state.
According to the embodiment of the application, the idle pin of the USB-C socket 11 is connected with the control circuit 13, and the A8 pin and the B8 pin are used for transmitting the audio access signal to the GPI0 pin of the control circuit 13, so that after the control circuit 13 receives the corresponding signal, the double-pole double-throw switch is controlled to move, the earphone is switched to an audio signal transmission state or a data transmission state, and the pin utilization rate of the USB-C socket 11 is improved.
Referring to fig. 3 and 4, in some embodiments, the earphone further includes an analog audio circuit electrically connected between the audio signal output terminal and the control circuit 13.
In this embodiment, the switching circuit 12 outputs an audio signal through an audio left channel signal terminal lp_auxin and an audio right channel signal terminal rp_auxin, and the analog audio circuit is electrically connected to the audio output terminal of the switching circuit 12, wherein an audio left channel output terminal AUX0L of the analog audio circuit is electrically connected to the audio left channel signal terminal lp_auxin; the audio right channel output end AUX0R and the audio right channel signal end rp_auxin of the analog audio circuit are electrically connected, and the audio left channel output end AUX0L and the audio right channel output end AUX0R of the analog audio circuit are electrically connected with the audio input end of the control circuit 13 respectively.
According to the embodiment of the application, the analog audio circuit is added between the audio signal output end and the control circuit 13, so that the signal-to-noise ratio of the audio signal is improved, the relative influence of external interference is reduced, the signal source is amplified, the voltage reaches above 2V, the audio signal with high input impedance and low output impedance is transmitted to the power amplifier, and the power amplifier can exert the optimal level.
Referring to fig. 2, in some embodiments, the control circuit 13 further includes a MIC signal input pin (not shown) and a GND analog input pin (not shown).
The a10 pin is electrically connected with the MIC signal input pin after being connected in parallel with the B10 pin, and the a10 pin is used for inputting a MIC signal with the B10 pin, in this embodiment, the a10 pin is connected with the aux_det end after being connected in parallel with the B10 pin, and the aux_det end is connected with the MIC signal input pin.
The a11 pin is connected with the B11 pin in parallel and then connected with the GND analog ground input pin, in this embodiment, the a11 pin is connected with the B11 pin in parallel and then connected with the micn_usb terminal, and the micn_usb terminal is connected with the GND analog ground input pin.
According to the earphone provided by the embodiment of the application, the USB-C socket 11 is arranged as a signal input interface, so that the waterproof and dustproof performance and the internal space utilization rate of the earphone are improved, the idle pins of the USB-C socket 11 are fully utilized as the input ends of audio signals, data signals and audio access signals, the pin utilization rate of the USB-C socket 11 is improved, the earphone is enabled to have audio transmission, data transmission and switching functions, the internal space of the earphone can be saved, the number of holes is reduced, and the earphone is more attractive.
Embodiments of patch cords of the present application
Referring to fig. 5, an embodiment of the present application provides a patch cord for connecting with the earphone, which includes a USB-C plug 21 and a device plug 22.
The USB-C plug 21 is electrically connected to the device plug 22, and the patch cord is connected to an external device through the device plug 22, where the external device includes, but is not limited to, a computer, a mobile phone, an audio device, and a data storage device.
The patch cord is electrically connected to the headset through the USB-C plug 21 and the USB-C receptacle 11.
Referring to fig. 6, in some embodiments, the USB-C plug 21 includes two rows of pins arranged in parallel, wherein the first row of pins includes, from top to bottom, GND pins, SSTXP1 pins, SSTXN1 pins, VBUS pins, CC1 pins, DP1 pins, DN1 pins, SBU1 pins, VBUS pins, SSRXN2 pins, SSRXP2 pins, and GND pins; the second row of pins are a GND pin, an SSRXP1 pin, an SSRXN1 pin, a VBUS pin, an SBU2 pin, a DN2 pin, a DP2 pin, a CC2 pin, a VBUS pin, an SSTXN2 pin, an SSTXP2 pin and a GND pin from top to bottom in sequence.
In this embodiment, the device plug 22 is a 3.5mm plug, wherein the plug is provided with a left channel signal end L, a right channel signal end R, a microphone signal end MIC, and a ground signal end GND, and the external device connected by the patch cord is an external device supporting 3.5mm output.
In this embodiment, when the USB-C plug 21 is plugged into the USB-C socket 11, the pins that perform the signal transmission function include SSTXP1 pin, SSTXP2 pin, SSTXN1 pin, SSTXN2 pin, SBU1 pin, SBU2 pin, SSRXN1 pin, SSRXN2 pin, SSRXP1 pin, and SSRXP2 pin.
The SSTXP1 pin is electrically connected with the left channel signal end through a lead after being connected with the SSTXP2 pin in parallel so as to output a left channel audio signal or a positive data transmission signal;
the SSTXN1 pin is connected with the SSTXN2 pin in parallel and then is electrically connected with the right channel signal end through a lead so as to output a right channel audio signal or a negative data transmission signal;
the SSRXN1 pin is connected with the SSRXN2 pin in parallel and then is electrically connected with the microphone signal end through a lead;
the SBU1 pin, the SBU2 pin and the SSRXP1 pin are connected in parallel with the SSRXP2 pin through leads and then are electrically connected with the grounding signal end.
In this embodiment, the wire used to connect the USB-C plug 21 and the audio plug is encapsulated to prevent wear of the wire.
According to the patch cord, one end of the patch cord is set to be the USB-C plug 21, the other end of the patch cord is set to be the 3.5mm plug, waterproof and dustproof effects of an earphone end are improved, the adaptation range of an equipment end is improved, the utilization rate of the patch cord is improved, and in addition, the patch cord has the functions of audio transmission and data transmission through the SSTXP1 pin on the USB-C plug 21, the SSTXP2 pin and the SSTXN1 pin and the SSTXN2 pin.
Embodiments of an audio device of the present application
Referring to fig. 7, an embodiment of the present application provides an audio device including the earphone 1 and the patch cord as described above.
The patch cord is detachably plugged into the earphone 1, and the electrical connection between the patch cord and the earphone 1 is realized through the plugging of the USB-C plug 21 and the USB-C socket 11.
The audio device is connected to an external device via a device plug 22.
Referring to fig. 2 and 6, in the present embodiment, the patch cord includes a USB-C plug 21 and a device plug 22.
The device plug 22 is a 3.5mm plug, and a left channel signal end, a right channel signal end, a microphone signal end and a grounding signal end are arranged on the device plug 22.
The USB-C plug 21 includes an SSTXP1 pin, an SSTXP2 pin, an SSTXN1 pin, an SSTXN2 pin, an SBU1 pin, an SBU2 pin, an SSRXN1 pin, an SSRXN2 pin, an SSRXP1 pin, and an SSRXP2 pin.
The SSTXP1 pin is connected with the SSTXP2 pin in parallel and then is electrically connected with the left channel signal end; the SSTXN1 pin is connected with the SSTXN2 pin in parallel and then is electrically connected with the right channel signal end; the SSRXN1 pin is connected with the SSRXN2 pin in parallel and then is electrically connected with the microphone signal end; the SBU1 pin, the SBU2 pin and the SSRXP1 pin are connected with the SSRXP2 pin in parallel and then are electrically connected with the grounding signal end.
The earphone comprises a USB-C socket 11, a switching circuit 12 and a control circuit 13.
The USB-C plug 21 is plugged with an idle pin of the USB-C socket 11 to realize audio signal or data signal transmission, wherein the idle pin of the USB-C socket 11 includes: a2 pin, A3 pin, A8 pin, a10 pin, a11 pin, B2 pin, B3 pin, B8 pin, B10 pin, and B11 pin.
The A2 pin is in butt joint with the SSTXP1 pin, the A3 pin is in butt joint with the SSTXP2 pin, the A8 pin is in butt joint with the SSTXN1 pin, the A10 pin is in butt joint with the SSTXN2 pin, the A11 pin is in butt joint with the SBU1 pin, the B2 pin is in butt joint with the SBU2 pin, the B3 pin is in butt joint with the SSRXN1 pin, the B8 pin is in butt joint with the SSRXN2 pin, the B10 pin is in butt joint with the SSRXP1 pin, and the B11 pin is in butt joint with the SSRXP2 pin, so that audio signals or data signals can be transmitted.
According to the audio equipment provided by the embodiment of the application, the idle pins of the USB-C socket are utilized to serve as the signal input ends for introducing audio signals and data signals, so that the pin utilization rate of the USB-C socket 11 is improved, the earphone has the functions of audio transmission and data transmission, the inner space of the earphone can be saved, the number of holes is reduced, and the earphone is more attractive.
It is apparent that the embodiments described above are only some embodiments of the present application, but not all embodiments, the preferred embodiments of the present application are given in the drawings, but not limiting the patent scope of the present application. This application may be embodied in many different forms, but rather, embodiments are provided in order to provide a more thorough understanding of the present disclosure. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing, or equivalents may be substituted for elements thereof. All equivalent structures made by the specification and the drawings of the application are directly or indirectly applied to other related technical fields, and are also within the protection scope of the application.