Summary of the invention
It is an object of the present invention to provide a kind of new solution regulating earpiece volume.
According to the first aspect of the invention, a kind of earphone, including plug, two receivers and control unit, wherein, described plug is connected with described control unit by the first connecting line, described control unit is connected with two receivers respectively by left ear connecting line and auris dextra connecting line, it is characterized in that: described control unit includes left power of hearing amount control circuit, auris dextra volume control circuit, the left power of hearing amount being connected with left power of hearing amount control circuit controls parts and the auris dextra volume control section part being connected with auris dextra volume control circuit, described left power of hearing amount control circuit and described auris dextra volume control circuit are respectively used to control the volume output of said two receiver, described left power of hearing amount controls parts and described auris dextra volume control section part is respectively used to regulate described left power of hearing amount control circuit and described auris dextra volume control circuit.
Preferably, described left power of hearing amount control circuit or auris dextra volume control circuit include slide-wire rheostat.
Preferably, the resistance value of described slide-wire rheostat is between 100 Ω to 1k.
Preferably, described control unit is additionally provided with audio input means.
Compared with prior art, the earphone of the present invention can realize respectively the volume of two receivers being exported being adjusted, and user can regulate the volume of earphone neatly according to different use scenes.
By referring to the accompanying drawing detailed description to the exemplary embodiment of the present invention, the further feature of the present invention and advantage thereof will be made apparent from.
Detailed description of the invention
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should also be noted that unless specifically stated otherwise, the parts otherwise set forth in these embodiments and positioned opposite, the numerical expression of step and numerical value do not limit the scope of the invention.
Description only actually at least one exemplary embodiment is illustrative below, never as any restriction to the present invention and application or use.
The known technology of person of ordinary skill in the relevant, method and apparatus are likely to be not discussed in detail, but in the appropriate case, described technology, method and apparatus should be considered a part for description.
Shown here with in all examples discussed, any occurrence should be construed as merely exemplary, not as restriction.Therefore, other example of exemplary embodiment can have different values.
It should also be noted that similar label and letter below figure represent similar terms, therefore, once a certain Xiang Yi accompanying drawing is defined, then it need not be further discussed in accompanying drawing subsequently.
Fig. 1 is the schematic diagram of the control unit of earphone according to embodiments of the present invention.
Generally, earphone includes plug, two headset earpiece and control unit, and described plug is connected with described control unit by the first connecting line, and described control unit is connected with two receivers respectively by left ear connecting line and/or auris dextra connecting line.Earphone according to the present invention is the earphone of wired connection, for instance, regular headset or headset etc..Described plug can be any one of the 3.5mm interface of routine, usb type or lighting interface.
According to one embodiment of present invention, the control unit of earphone includes the control parts for controlling two Headphone volume outputs respectively.As it is shown in figure 1, control unit 10 includes left power of hearing amount controls parts 13 and auris dextra volume control section part 14, its volume output being respectively used to regulate left otaphone and auris dextra receiver.By this setup, user can regulate the volume output of left and right ear respectively by described volume control section part, to adapt to different scenes.
It will be understood to those skilled in the art that described volume control section part can present various shape, for instance, circular or square button or slide block.User can regulate the volume of corresponding left and right ear by the mode of sliding button.
Further, the control unit of described earphone also can arrange audio input means, for instance, the MIC key 12 shown in Fig. 1, it is the switch for controlling earpiece audio input；And MIC hole 11, it is for the call of earphone.
It should be understood by those skilled in the art that above-mentioned control unit may be located at the optional position between headset plug and headset earpiece.Such as, it is positioned on left ear earphone cord, on auris dextra earphone cord or be arranged on the earmuff of headset.
Correspondingly, left power of hearing amount control circuit and auris dextra volume control circuit are included according to the control unit of the earphone of the present invention.Wherein, described left power of hearing amount control circuit and described auris dextra volume control circuit are respectively used to control the volume output of said two receiver, described left power of hearing amount controls parts and described auris dextra volume control section part is respectively used to regulate described left power of hearing amount control circuit and described auris dextra volume control circuit, illustrates below in conjunction with Fig. 2.
Fig. 2 illustrates the principle schematic of volume control circuit according to an embodiment of the invention.Wherein, the circuit shown in Fig. 2 includes left power of hearing amount control circuit and auris dextra volume control circuit.Also show the control circuit of MIC key in this embodiment.
In the embodiment shown in Figure 2, MIC key control circuit includes switch element SW1, and left power of hearing amount control circuit adopts slide-wire rheostat R2 and SW2 to realize, and auris dextra volume control circuit adopts slide-wire rheostat R3 and SW3 to realize.In fig. 2, L represents left ear holding wire, and its one end connects left otaphone L-SPEAKER, and the other end connects the first connecting portion of headset plug.R represents right ear signals line, and its one end connects auris dextra receiver R-SPEAKER, and the other end connects the second connecting portion of headset plug.One end of MIC holding wire connects the circuit shown in Fig. 1, and the other end connects the 3rd connecting portion of headset plug.Wherein, this circuit and left otaphone and auris dextra receiver shared grounding line GND.
It should be understood by those skilled in the art that above-mentioned the first connecting portion, the second connecting portion and the 3rd connecting portion mutually insulated between the plug position of earphone, three, and described connecting portion is provided with conductive part.The connecting portion structure of described plug and the position relationship of holding wire are the conventional design of this area, do not repeat them here.
Being inserted in the earphone socket of described electronic equipment by described headset plug, each connecting portion on described headset plug is connected with the audio input/output circuit of electronic equipment.Such as, the left and right otaphone of earphone electrically connects with the audio output port of electronic equipment, the audio input means on earphone, for instance, MIC, electrically connect with the audio input port of electronic equipment.With the earphone of the present invention with the use of electronic equipment include but not limited to mobile phone, panel computer, notebook computer, MP3, MP4 etc..
Generally, electronic equipment includes earphone socket, microprocessor and testing circuit.Testing circuit is connected with microprocessor, when inserting an earphone into described electronic equipment, testing circuit is connected with the circuit in earphone control unit, it is possible to the voltage of circuit or curent change in test earphone control unit, such as, the output voltage on detection MIC line shown in Fig. 1.Described microprocessor voltage detected by testing circuit or curent change control audio frequency input and the output of electronic equipment, such that it is able to control the volume output of headset earpiece.
The operation principle of testing circuit is introduced below in conjunction with Fig. 1 and Fig. 2.
With reference to Fig. 1 and Fig. 2, such as, when the voltage of MIC holding wire is 5V, when user presses the left power of hearing amount control parts 13 shown in Fig. 1, switch SW2 Guan Bi, now, if user slides, left power of hearing amount controls parts 13, there is corresponding change in the resistance value of slide-wire rheostat R2, resistance value according to Fig. 2, the voltage of MIC holding wire changes between 2.5V to 3.3V, and testing circuit correspondingly regulates the volume of the L channel output connecting left ear holding wire according to detected change in voltage.Similarly, for auris dextra volume control circuit, when the line voltage of MIC signal changes between 3.3V to 3.75V, testing circuit correspondingly adjusts the volume of R channel output.When user presses MIC key, the switch element Guan Bi of MIC key control circuit, MIC holding wire is short-circuit ground, and now voltage is zero, and electric current is maximum.Therefore, according to the change in voltage on MIC holding wire, described testing circuit may determine that earpiece volume controls parts or which kind of state MIC key is in, and correspondingly adjust the output volume of the left and right acoustic channels of electronic equipment, thus reach control the left and right ear output volume of earphone or control the purpose of audio frequency input and output.
It will be understood to those skilled in the art that the resistance value marked in Fig. 2 is merely to illustrate the voltage divider principle of circuit, not as being limitation of the present invention.Can connect further in the circuit other resistance or change resistance value.Such as, the resistance value of described slide-wire rheostat can between 100 Ω to 1k.
It will be understood to those skilled in the art that in order to avoid overcurrent damage or carry out high frequency low frequency filtering, circuit can connect the peripheral circuit such as inductance L1 or shunt capacitance C1, C2 further.This is the conventional design of this area, and this is no longer going to repeat them.
Although some specific embodiments of the present invention being described in detail already by example, but it should be appreciated by those skilled in the art, example above is merely to illustrate, rather than in order to limit the scope of the present invention.It should be appreciated by those skilled in the art, can without departing from the scope and spirit of the present invention, above example be modified.The scope of the present invention be defined by the appended claims.