CN110166868B - Charging box and charging system communicating with wireless earphone - Google Patents

Charging box and charging system communicating with wireless earphone Download PDF

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Publication number
CN110166868B
CN110166868B CN201910451641.1A CN201910451641A CN110166868B CN 110166868 B CN110166868 B CN 110166868B CN 201910451641 A CN201910451641 A CN 201910451641A CN 110166868 B CN110166868 B CN 110166868B
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charging
communication
analog
box
control chip
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CN110166868A (en
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王建波
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Goertek Techology Co Ltd
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Goertek Techology Co Ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/10Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1025Accumulators or arrangements for charging

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Telephone Function (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention discloses a charging box and a charging system which are communicated with a wireless earphone, and the charging box and the charging system comprise: the second communication contact is connected with the first communication contact of the wireless earphone after the wireless earphone is placed in the box; the first communication contact is connected with an analog-to-digital conversion interface of a first control chip of the wireless earphone; an analog communication circuit connected to the second communication contact; the communication trigger module is used for receiving a communication instruction for representing the pre-realization function of the wireless earphone; and the second control chip is connected with the analog communication circuit and the communication trigger module and used for controlling the analog communication circuit to output an analog signal representing the pre-realization function after the wireless earphone is put into the box and when a communication instruction is received, so that the first control chip controls the wireless earphone to realize the pre-realization function after receiving a data signal converted from the analog signal. Therefore, the cost of the wireless earphone is reduced by the analog communication mode, and the miniaturization design of the wireless earphone is facilitated.

Description

Charging box and charging system communicating with wireless earphone
Technical Field
The invention relates to the field of wireless earphone charging, in particular to a charging box and a charging system which are communicated with a wireless earphone.
Background
With the development of wireless communication technology, wireless earphones are more and more widely used. Among Wireless headset products, a TWS (True Wireless Stereo) Wireless headset is a relatively smart product, which is generally equipped with a charging box having a function of receiving and charging. Currently, communication between the charging box and the wireless headset is generally designed to perform some specific functions of the wireless headset, so as to enhance the experience of the user.
In the prior art, information transmission between the charging box and the wireless earphone is mostly completed in a digital communication mode, and the digital communication mode needs to build a complete digital communication circuit on the charging box and the wireless earphone, so that the cost of the wireless earphone is high; moreover, the components of the digital communication circuit occupy part of the space of the circuit board of the wireless headset, which is not favorable for the miniaturization design of the wireless headset.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a charging box and a charging system which are communicated with a wireless earphone. On the basis that an analog-digital conversion interface is originally arranged on a first control chip of the wireless earphone, only an analog communication circuit capable of outputting analog signals is required to be built on the charging box, so that the cost of the wireless earphone is reduced, and the miniaturization design of the wireless earphone is facilitated.
To solve the above technical problem, the present invention provides a charging box for communicating with a wireless headset, comprising:
the second communication contact is connected with the first communication contact of the wireless earphone after the wireless earphone is placed in the box; the first communication contact is connected with an analog-to-digital conversion interface of a first control chip of the wireless earphone;
an analog communication circuit connected to the second communication contact;
the communication trigger module is used for receiving a communication instruction for representing the pre-implementation function of the wireless headset;
and the second control chip is connected with the analog communication circuit and the communication trigger module and used for controlling the analog communication circuit to output an analog signal representing the pre-realization function after the wireless earphone is put into the box and the communication command is received, so that the first control chip controls the wireless earphone to realize the pre-realization function after receiving the data signal converted by the analog signal.
Preferably, the analog communication circuit includes a linear regulator outputting different voltage signals;
the second control chip is specifically configured to control the linear regulator corresponding to the pre-implementation function to output a voltage signal representing the pre-implementation function after the wireless headset is plugged into the box and when the communication instruction is received.
Preferably, the linear regulator is a low dropout L DO regulator.
Preferably, the analog communication circuit is a digital-to-analog converter;
the second control chip is specifically configured to output a digital signal representing the pre-implementation function to the digital-to-analog converter after the wireless headset is loaded into the box and when the communication instruction is received, so that the digital-to-analog converter converts the digital signal into an analog signal and outputs the analog signal.
Preferably, the communication trigger module is a key for a user to operate;
the second control chip is specifically configured to control the analog communication circuit to output an analog signal representing the pre-implementation function after the wireless headset is plugged into the box and when the key is detected to be in an operation state corresponding to the pre-implementation function.
Preferably, the second control chip is specifically configured to, after the wireless headset is loaded into the box and when the key is detected to be pressed for a long time or continuously for a preset number of times, determine a pre-implementation function of the wireless headset corresponding to a current operation state of the key according to an operation function correspondence relationship, and control the analog communication circuit to output an analog signal representing the pre-implementation function.
Preferably, the pre-implementation function comprises a headset pairing function and a headset out-of-sleep function.
Preferably, the key is a touch key.
Preferably, the charging cartridge further comprises:
the second charging contact is connected with the first charging contact of the wireless earphone after the wireless earphone is placed in the box; the first charging contact is connected with a charging interface of the first control chip;
the charging circuit is respectively connected with the second charging contact and the second control chip;
the second control chip is further configured to control the charging circuit to output a charging voltage after the wireless headset is plugged into the box, so that the first control chip charges the battery of the wireless headset after receiving the charging voltage;
the first charging contact and the first communication contact share the same contact, and the second charging contact and the second communication contact share the same contact;
the second control chip is specifically configured to control the charging circuit to stop outputting the charging voltage and control the analog communication circuit to output an analog signal representing the pre-implementation function after the wireless headset is plugged into the box and the communication instruction is received, so that the first control chip controls the wireless headset to implement the pre-implementation function after receiving the data signal converted from the analog signal.
In order to solve the technical problem, the invention further provides a charging system which comprises a wireless earphone and any one of the charging boxes which is communicated with the wireless earphone.
The present invention provides a charging box communicating with a wireless headset, comprising: the second communication contact is connected with the first communication contact of the wireless earphone after the wireless earphone is placed in the box; the first communication contact is connected with an analog-to-digital conversion interface of a first control chip of the wireless earphone; an analog communication circuit connected to the second communication contact; the communication trigger module is used for receiving a communication instruction for representing the pre-realization function of the wireless earphone; and the second control chip is connected with the analog communication circuit and the communication trigger module and used for controlling the analog communication circuit to output an analog signal representing the pre-realization function after the wireless earphone is put into the box and when a communication instruction is received, so that the first control chip controls the wireless earphone to realize the pre-realization function after receiving a data signal converted from the analog signal.
Therefore, the information transmission is completed between the charging box and the wireless earphone in an analog communication mode. On the basis that an analog-digital conversion interface is originally arranged on a first control chip of the wireless earphone, only an analog communication circuit capable of outputting analog signals is required to be built on the charging box, so that the cost of the wireless earphone is reduced, and the miniaturization design of the wireless earphone is facilitated.
The invention also provides a charging system which has the same beneficial effects as the charging box.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a charging box for communicating with a wireless headset according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another charging box for communicating with a wireless headset according to an embodiment of the present invention.
Detailed Description
The core of the invention is to provide a charging box and a charging system which are communicated with a wireless earphone, wherein the information transmission between the charging box and the wireless earphone is completed by adopting an analog communication mode. On the basis that an analog-digital conversion interface is originally arranged on a first control chip of the wireless earphone, only an analog communication circuit capable of outputting analog signals is required to be built on the charging box, so that the cost of the wireless earphone is reduced, and the miniaturization design of the wireless earphone is facilitated.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a charging box for communicating with a wireless headset according to an embodiment of the present invention.
This charging box with wireless headset communication includes:
the second communication contact 1 is connected with the first communication contact of the wireless earphone after the earphone is placed in the box; the first communication contact is connected with an analog-to-digital conversion interface of a first control chip of the wireless earphone;
an analog communication circuit 2 connected to the second communication contact 1;
the communication trigger module 3 is used for receiving a communication instruction for representing the pre-realization function of the wireless earphone;
and the second control chip 4 is connected with the analog communication circuit 2 and the communication trigger module 3 and is used for controlling the analog communication circuit 2 to output an analog signal representing a pre-realization function after the wireless earphone is put into a box and when a communication instruction is received, so that the first control chip controls the wireless earphone to realize the pre-realization function after receiving a data signal converted by the analog signal.
Specifically, the charging box of this application includes second communication contact 1, analog communication circuit 2, communication trigger module 3 and second control chip 4, and its theory of operation is:
at present, an earphone key for a user to operate is usually designed on a wireless earphone, and usually, a left earphone and a right earphone are respectively provided with one earphone key. However, some functions of the wireless headset need the left headset and the right headset to perform some operations at the same time, and if the left headset and the right headset are triggered to perform the operations correspondingly through the headset keys on the left headset and the right headset, the headset keys on the left headset and the right headset need to be pressed at the same time, which results in great operation difficulty, and thus reduces the experience effect of the user. Therefore, this application adopts the box that charges to communicate with wireless earphone to give left earphone and right earphone routing information simultaneously, with this action of accomplishing, thereby reduced the operation degree of difficulty, promoted user's experience effect.
In order to enable the charging box to communicate with the wireless earphone, the wireless earphone is provided with a first communication contact (such as a probe), the charging box is provided with a second communication contact 1 which can be matched and connected with the first communication contact of the wireless earphone, and when the first communication contact is connected with the second communication contact 1, the charging box and the wireless earphone can be initially connected in a communication mode.
Meanwhile, considering that the first control chip of the wireless earphone is provided with an analog-to-digital conversion interface (capable of converting analog signals into digital signals), the communication between the charging box and the wireless earphone can be designed to be in analog communication, and under the condition, the wireless earphone can directly utilize the analog-to-digital conversion interface on the first control chip of the wireless earphone to communicate analog signals with the charging box. Based on this, this application still needs to set up the analog communication circuit 2 of exportable analog signal at the box end that charges to establish the signal transmission route between box and the wireless earphone that charges: analog communication circuit 2-second communication contact 1-first communication contact-analog-to-digital conversion interface.
Moreover, since there is more than one pre-implemented function of the wireless headset, the present application should establish a one-to-one correspondence relationship (for short, a functional signal correspondence relationship) between the pre-implemented function of the wireless headset and the analog signal output by the analog communication circuit 2 in advance, so as to output different analog signals through the analog communication circuit 2 to implement different functions of the wireless headset. Based on this, the communication trigger module 3 for receiving a communication instruction (which can be sent by a user) to trigger the analog communication circuit 2 to output an analog signal needs to be arranged at the charging box end, and it can be understood that a one-to-one correspondence relationship between the pre-implementation function of the wireless headset and the communication instruction should be established in advance, so that different functions of the wireless headset are implemented by sending different communication instructions to the communication trigger module 3.
More specifically, after receiving a communication instruction representing a pre-implementation function of the wireless headset (taking a first headset function as an example), the communication triggering module 3 sends the communication instruction to the original second control chip 4 at the charging box end, and then the second control chip 4 controls the analog communication circuit 2 to output an analog signal representing the first headset function. After receiving the analog signal, the analog-to-digital conversion interface of the first control chip converts the analog signal into a digital signal, and determines that the wireless headset needs to realize a first headset function based on the corresponding relation of the functional signals, so that the wireless headset is controlled to perform an operation corresponding to the first headset function.
It should be noted that the wireless headset includes a left headset and a right headset, and the communication between the charging box and the wireless headset mentioned above is proposed for the left headset and the right headset at the same time, as shown in fig. 1.
The present invention provides a charging box communicating with a wireless headset, comprising: the second communication contact is connected with the first communication contact of the wireless earphone after the wireless earphone is placed in the box; the first communication contact is connected with an analog-to-digital conversion interface of a first control chip of the wireless earphone; an analog communication circuit connected to the second communication contact; the communication trigger module is used for receiving a communication instruction for representing the pre-realization function of the wireless earphone; and the second control chip is connected with the analog communication circuit and the communication trigger module and used for controlling the analog communication circuit to output an analog signal representing the pre-realization function after the wireless earphone is put into the box and when a communication instruction is received, so that the first control chip controls the wireless earphone to realize the pre-realization function after receiving a data signal converted from the analog signal.
Therefore, the information transmission is completed between the charging box and the wireless earphone in an analog communication mode. On the basis that an analog-digital conversion interface is originally arranged on a first control chip of the wireless earphone, only an analog communication circuit capable of outputting analog signals is required to be built on the charging box, so that the cost of the wireless earphone is reduced, and the miniaturization design of the wireless earphone is facilitated.
On the basis of the above-described embodiment:
as an alternative embodiment, the analog communication circuit 2 includes a linear regulator that outputs different voltage signals;
the second control chip 4 is specifically configured to control the linear voltage regulator corresponding to the pre-implementation function to output a voltage signal representing the pre-implementation function when the wireless headset is plugged into a box and receives a communication instruction.
Specifically, the analog communication circuit 2 of the present application may include a plurality of linear voltage regulators (a voltage signal output by a single linear voltage regulator is constant), and the voltage signals output by the plurality of linear voltage regulators are different from each other. It is understood that the number of the linear voltage regulators is determined by the number of the pre-implemented functions of the wireless headset, which is equal to the number of the pre-implemented functions of the wireless headset, so that the one-to-one correspondence relationship between the pre-implemented functions of the wireless headset, the voltage signal (as the analog signal of the above-mentioned embodiment) and the linear voltage regulators is established.
Based on this, after receiving a communication instruction representing a pre-implementation function of the wireless headset (taking the first headset function as an example), the communication triggering module 3 sends the communication instruction to the second control chip 4, and then the second control chip 4 determines the linear regulator corresponding to the first headset function based on the communication instruction and controls the linear regulator to output a voltage signal representing the first headset function. After receiving the voltage signal, the analog-to-digital conversion interface of the first control chip converts the voltage signal into a digital signal, and determines that the wireless headset needs to realize a first headset function based on the corresponding relation of the functional signals, so that the wireless headset is controlled to perform an operation corresponding to the first headset function.
In addition, the linear regulator is selected because of its advantages of low cost, low noise, low static current, less peripheral devices and simple circuit structure.
As an alternative embodiment, the linear regulator is embodied as an L DO regulator.
The L DO regulator is a novel linear regulator, and has a reduced requirement on operating conditions compared with a conventional linear regulator, and thus meets more application scenarios, specifically, the conventional linear regulator (e.g., 78XX series linear regulator chip) requires that an input voltage is at least 2V to 3V higher than an output voltage, otherwise the conventional linear regulator cannot operate normally, and has severe operating conditions, e.g., 5V to 3.3V, a voltage difference between the input voltage and the output voltage is only 1.7V, and cannot meet the operating conditions of the conventional linear regulator.
As an alternative embodiment, the analog communication circuit 2 is a digital-to-analog converter;
the second control chip 4 is specifically configured to output a digital signal representing a pre-implementation function to the digital-to-analog converter after the wireless headset is plugged into the box and when the wireless headset receives a communication instruction, so that the digital-to-analog converter converts the digital signal into an analog signal and outputs the analog signal.
Specifically, in addition to the linear voltage regulator mentioned in the above embodiment, the analog communication circuit 2 of the present application may also select a digital-to-analog converter (which converts a digital signal into an analog signal, inputs different digital signals, and correspondingly outputs different analog signals) for the analog communication circuit 2, so as to establish a one-to-one correspondence relationship between the pre-implemented function of the wireless headset and the analog signal and the digital signal.
Based on this, after receiving a communication instruction representing a pre-implementation function of the wireless headset (taking the first headset function as an example), the communication triggering module 3 sends the communication instruction to the second control chip 4, and then the second control chip 4 determines a digital signal corresponding to the first headset function based on the communication instruction and outputs the digital signal to the digital-to-analog converter. After receiving the digital signal, the digital-to-analog converter converts the digital signal into an analog signal representing the function of the first earphone and outputs the analog signal. After receiving the analog signal, the analog-to-digital conversion interface of the first control chip converts the analog signal into a digital signal, and determines that the wireless headset needs to realize a first headset function based on the corresponding relation of the functional signals, so that the wireless headset is controlled to perform an operation corresponding to the first headset function.
Of course, the analog communication circuit 2 of the present application may also be another type of circuit, and the present application is not particularly limited as long as the operation principle of the analog communication circuit 2 of the present application is satisfied.
As an alternative embodiment, the communication triggering module 3 is a key for the user to operate;
the second control chip 4 is specifically configured to control the analog communication circuit 2 to output an analog signal representing the pre-implementation function after the wireless headset is plugged into the box and when the key is detected to be in the operation state corresponding to the pre-implementation function.
Specifically, the communication trigger module 3 of the present application may select a key for a user to operate, and it can be understood that when the actions of the user operating the key are different, the communication instruction sent by the key to the second control chip 4 is different, so as to establish a one-to-one correspondence relationship between the pre-implementation function of the wireless headset and the operation state and communication instruction of the key.
Based on this, when the user operates the key, if the operation state of the key at this time corresponds to the first earphone function, the communication instruction sent to the second control chip 4 by the key corresponds to the first earphone function, so that the second control chip 4 controls the analog communication circuit 2 to output the analog signal representing the first earphone function after receiving the communication instruction.
As an optional embodiment, the second control chip 4 is specifically configured to determine, after the wireless headset is plugged into the box and when the key is detected to be pressed for a long time or continuously for a preset number of times, a pre-implementation function of the wireless headset corresponding to the current operation state of the key according to the correspondence relationship between the operation functions, and control the analog communication circuit 2 to output an analog signal representing the pre-implementation function.
Furthermore, the keys of the wireless earphone can adopt a mode of pressing the keys for a long time for one-by-one representing different operation states of the keys and also can adopt a mode of continuously pressing the keys for different times for one-by-one representing different operation states of the keys, thereby realizing different functions of the wireless earphone through different operation states of the keys. As to which pre-implemented function of the wireless headset corresponds to a specific operation state of the key, the application is not particularly limited herein.
For example, the user presses the key 5S for a long time to correspond to the first earphone function of the wireless earphone: after the wireless earphone is put into the box, when a user presses the key for a long time for 5S, the second control chip 4 detects that the key is in the operation state of pressing for a long time for 5S, then determines that the current operation state of the key corresponds to the first earphone function according to the one-to-one correspondence (operation function correspondence for short) between the pre-realized function of the wireless earphone and the operation state of the key, and then controls the analog communication circuit 2 to output an analog signal representing the first earphone function. After recognizing the analog signal, the wireless earphone enters an operation mode of a first earphone function to complete the whole action.
For another example, the user continuously presses the key 3 times to correspond to the second earphone function of the wireless earphone: after the wireless earphone is put into the box, when a user continuously presses the key for 3 times, the second control chip 4 detects that the key is in an operation state of continuously pressing for 3 times, then determines that the current operation state of the key corresponds to the second earphone function according to the corresponding relation of the operation functions, and then controls the analog communication circuit 2 to output an analog signal representing the second earphone function. After recognizing the analog signal, the wireless earphone enters an operation mode of a second earphone function to complete the whole action.
It should be noted that, for different times of continuous pressing of the key, the user is considered to continuously press the key only if the time interval between adjacent pressing of the key by the user is within the preset time (set to be a short time, such as 0.5S-2S).
As an alternative embodiment, the pre-implementation function includes a headset pairing function and a headset out-of-sleep function.
Specifically, the pre-implemented functions of the wireless headset of the present application may include, but are not limited to, a headset pairing function and a headset sleep exit function, and the present application is not particularly limited herein and depends on actual needs.
In addition, when the pre-realized functions of the wireless earphone are more, the working state of the wireless earphone after the wireless earphone is placed into the box can be detected by the first control chip of the wireless earphone, and when the working state of the wireless earphone after the wireless earphone is placed into the box is in a certain specific working state, the wireless earphone is controlled to enter an operation mode of the earphone function corresponding to the specific working state, so that the whole action is completed. For example, when the first control chip detects that the battery of the wireless headset is charged completely, the wireless headset is controlled to exit the sleep mode, so that the headset exits the sleep function. Based on this, considering that the second control chip 4 can also detect whether the battery of the wireless headset is charged completely, the second control chip 4 of the present application can also control the wireless headset to implement a certain function through the analog communication circuit 2 when detecting that the battery of the wireless headset is charged completely.
As an alternative embodiment, the key is embodied as a touch key.
Specifically, the keys of the touch screen display device can be touch keys (principle: capacitive touch keys), when a human hand touches the capacitive touch keys, capacitance generated by the human hand is superposed on the capacitive touch keys, so that the capacitance fed back to the second control chip 4 by the capacitive touch keys is increased, and the second control chip 4 can judge whether the capacitive touch keys are being touched by a user based on the capacitance change of the capacitive touch keys, thereby determining the operation action of the user on the capacitive touch keys.
Of course, other types of keys, such as self-resetting physical keys, may be used as the keys of the present application, and the present application is not limited herein.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another charging box for communicating with a wireless headset according to an embodiment of the present invention.
As an optional embodiment, the charging box further comprises:
the second charging contact is connected with the first charging contact of the wireless earphone after the wireless earphone is placed in the box; the first charging contact is connected with a charging interface of the first control chip;
the charging circuit 5 is respectively connected with the second charging contact and the second control chip 4;
the second control chip 4 is further configured to control the charging circuit 5 to output a charging voltage after the wireless headset is plugged into the box, so that the first control chip charges the battery of the wireless headset after receiving the charging voltage;
the first charging contact and the first communication contact share the same contact, and the second charging contact and the second communication contact 1 share the same contact;
the second control chip 4 is specifically configured to control the charging circuit 5 to stop outputting the charging voltage and control the analog communication circuit 2 to output the analog signal representing the pre-implementation function when the wireless headset is plugged into the box and receives the communication instruction, so that the first control chip controls the wireless headset to implement the pre-implementation function after receiving the data signal converted from the analog signal.
Further, the main purpose of the known charging box is to charge the wireless earphone, so that the wireless earphone is provided with the first charging contact point, the second charging contact point which can be matched and connected with the first charging contact point of the wireless earphone is arranged on the charging box, and when the first charging contact point is connected with the second charging contact point, the charging box and the wireless earphone can be connected in a charging mode. Meanwhile, the charging circuit 5 (usually, BOOST booster circuit) controlled by the second control chip 4 is arranged on the charging box, so that a charging path between the charging box and the wireless earphone is established: the charging circuit 5-the second charging contact-the first charging contact-the charging interface of the first control chip.
Specifically, after the wireless headset is plugged into the box (the wireless headset can be detected by using a sensor (such as a hall sensor or an infrared sensor), and the information is sent to the second control chip 4), the second control chip 4 controls the charging circuit 5 to output the charging voltage. The first control chip can charge the battery of the wireless earphone after receiving the charging voltage, so that the wireless earphone can be autonomously charged.
Furthermore, the first charging contact and the first communication contact of the present application may share the same contact (specifically, two probes a1, B1 are included, one probe a1 is used for charging or communication, and the other probe B1 is grounded), and correspondingly, the second charging contact and the second communication contact 1 also share the same contact (similarly, two probes a2, B2 are included, one probe a2 is used for charging or communication, and the other probe B2 is grounded). Based on this, when the charging box charges the wireless headset, the charging circuit 5 is in an operating state, the analog communication circuit 2 is in an inoperative state, and the probe a1 and the probe a2 are switched to a charging mode; when the charging box is communicated with the wireless earphone, the analog communication circuit 2 is in a working state, the charging circuit 5 is in a non-working state, and the probe A1 and the probe A2 are switched to a communication mode, so that the earphone charging and the earphone communication can be realized by adopting a mode of sharing the probe, the cost is saved, and the circuit structure is simplified.
The invention also provides a charging system which comprises the wireless earphone and any one of the charging boxes which is communicated with the wireless earphone.
For introduction of the charging system provided in the present application, please refer to the above-mentioned embodiment of the charging box, which is not described herein again.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A charging box in communication with a wireless headset, comprising:
the second communication contact is connected with the first communication contact of the wireless earphone after the wireless earphone is placed in the box; the first communication contact is connected with an analog-to-digital conversion interface of a first control chip of the wireless earphone;
an analog communication circuit connected to the second communication contact;
the communication trigger module is used for receiving a communication instruction for representing the pre-implementation function of the wireless headset;
and the second control chip is connected with the analog communication circuit and the communication trigger module and used for controlling the analog communication circuit to output an analog signal representing the pre-realization function after the wireless earphone is put into the box and the communication command is received, so that the first control chip controls the wireless earphone to realize the pre-realization function after receiving the data signal converted by the analog signal.
2. A charging box for communicating with a wireless headset according to claim 1, wherein the analog communication circuit includes a linear regulator outputting different voltage signals;
the second control chip is specifically configured to control the linear regulator corresponding to the pre-implementation function to output a voltage signal representing the pre-implementation function after the wireless headset is plugged into the box and when the communication instruction is received.
3. A charging box for communicating with a wireless headset according to claim 2, characterized in that the linear regulator is in particular a low drop-out L DO regulator.
4. A charging box for communicating with a wireless headset according to claim 1, wherein the analog communication circuit is a digital-to-analog converter;
the second control chip is specifically configured to output a digital signal representing the pre-implementation function to the digital-to-analog converter after the wireless headset is loaded into the box and when the communication instruction is received, so that the digital-to-analog converter converts the digital signal into an analog signal and outputs the analog signal.
5. A charging box for communicating with a wireless headset according to claim 1, wherein the communication triggering module is a key for a user to operate;
the second control chip is specifically configured to control the analog communication circuit to output an analog signal representing the pre-implementation function after the wireless headset is plugged into the box and when the key is detected to be in an operation state corresponding to the pre-implementation function.
6. The charging box according to claim 5, wherein the second control chip is specifically configured to determine a pre-implementation function of the wireless headset corresponding to a current operation state of the key according to the correspondence relationship between operation functions when the wireless headset is plugged into the box and the key is detected to be pressed for a preset time or continuously pressed for a preset number of times, and control the analog communication circuit to output an analog signal representing the pre-implementation function.
7. A charging box for communicating with a wireless headset according to claim 6, wherein the pre-implemented functions include a headset pairing function and a headset out-of-sleep function.
8. A charging box for communicating with a wireless headset according to claim 6, characterized in that the keys are in particular touch keys.
9. A charging box for communicating with a wireless headset according to any one of claims 1-8, wherein the charging box further comprises:
the second charging contact is connected with the first charging contact of the wireless earphone after the wireless earphone is placed in the box; the first charging contact is connected with a charging interface of the first control chip;
the charging circuit is respectively connected with the second charging contact and the second control chip;
the second control chip is further configured to control the charging circuit to output a charging voltage after the wireless headset is plugged into the box, so that the first control chip charges the battery of the wireless headset after receiving the charging voltage;
the first charging contact and the first communication contact share the same contact, and the second charging contact and the second communication contact share the same contact;
the second control chip is specifically configured to control the charging circuit to stop outputting the charging voltage and control the analog communication circuit to output an analog signal representing the pre-implementation function after the wireless headset is plugged into the box and the communication instruction is received, so that the first control chip controls the wireless headset to implement the pre-implementation function after receiving the data signal converted from the analog signal.
10. A charging system comprising a wireless headset and a charging box according to any of claims 1-9 in communication with the wireless headset.
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