CN113225635A - Wireless Bluetooth headset charging box system and communication method thereof - Google Patents

Wireless Bluetooth headset charging box system and communication method thereof Download PDF

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Publication number
CN113225635A
CN113225635A CN202010079644.XA CN202010079644A CN113225635A CN 113225635 A CN113225635 A CN 113225635A CN 202010079644 A CN202010079644 A CN 202010079644A CN 113225635 A CN113225635 A CN 113225635A
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CN
China
Prior art keywords
charging
bluetooth headset
wireless bluetooth
switch
charging box
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010079644.XA
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Chinese (zh)
Inventor
黄羿铭
许玮豪
胡嘉和
谢明益
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Airoha Technology Corp
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Airoha Technology Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Airoha Technology Corp filed Critical Airoha Technology Corp
Priority to CN202310073812.8A priority Critical patent/CN116095554A/en
Priority to CN202010079644.XA priority patent/CN113225635A/en
Publication of CN113225635A publication Critical patent/CN113225635A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1025—Accumulators or arrangements for charging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive loop type
    • H04B5/72—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/16—Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

Wireless bluetooth headset box system that charges includes: a wireless bluetooth headset, comprising: a earphone controller, a first switch coupled and controlled by the earphone controller, a second switch coupled to the first switch; and a charging box removably coupled to the wireless bluetooth headset, the charging box comprising: a charging box controller, a third switch coupled to and controlled by the charging box controller, and a fourth switch coupled to the third switch, and coupled to a voltage divider circuit for dividing a voltage source to generate a node voltage. In a charging state, the first switch, the second switch, the third switch and the fourth switch are turned on, and the node voltage is a first voltage value. In a communication state, the first switch, the second switch, the third switch and the fourth switch are turned off, and the node voltage is a second voltage value, wherein the first voltage value is higher than the second voltage value.

Description

Wireless Bluetooth headset charging box system and communication method thereof
Technical Field
The invention relates to a Bluetooth headset charging box system and a communication method thereof.
Background
With the social progress and the improvement of the standard of life of people, the earphone becomes an indispensable daily necessity for people. The traditional wired earphone is easy to limit the movement of a wearer in use, and is very inconvenient especially in sports occasions. Although the common Bluetooth headset cancels the connection between the headset and the intelligent device, the connection still exists between the left headset and the right headset. The left earphone and the right earphone of the wireless Bluetooth earphone are communicated through Bluetooth, and the wireless earphone in the real sense is realized.
However, due to the extremely small size of the wireless bluetooth headset, only a lithium ion battery with very small capacity can be placed inside the headset. Due to the limitation of the battery capacity of the earphone, a manufacturer will generally mark a dedicated charging box to prolong the service life of the wireless bluetooth earphone.
The charging box and the wireless bluetooth headset need to communicate with each other to transmit information to each other. Therefore, the invention provides a wireless bluetooth headset charging box system and a communication method thereof, which are used for improving the communication between the charging box and the wireless bluetooth headset.
Disclosure of Invention
The invention relates to a wireless Bluetooth headset charging box system and a communication method thereof, which utilize a time-sharing bidirectional half-duplex mode to improve the communication speed and accuracy between a charging box and a wireless Bluetooth headset and reduce the hardware cost of the charging box and the wireless Bluetooth headset.
According to an example of the present disclosure, a communication method of a wireless bluetooth headset charging box system is provided, including: a charging box actively enters a communication mode; temporarily ending a charging mode of the charging box and enabling the charging box to wait for a period of time; when a wireless Bluetooth headset judges and detects a charging stopping event and the wireless Bluetooth headset judges that a node voltage between a charging box and the wireless Bluetooth headset is equal to a preset value, temporarily ending a charging mode of the wireless Bluetooth headset and enabling the wireless Bluetooth headset to enter a communication mode; and after the communication between the charging box and the wireless Bluetooth headset is finished, the charging box and the wireless Bluetooth headset are enabled to recover the charging mode, so that the charging box charges the wireless Bluetooth headset.
According to an example of the present disclosure, a communication method of a wireless bluetooth headset charging box system is provided, including: a wireless Bluetooth headset actively enters a communication mode; the wireless Bluetooth earphone enables a charging current to be smaller than a current threshold value; when a charging box detects that the charging current is smaller than the current threshold, temporarily ending a charging mode of the charging box, and enabling the charging box to wait for a period of time; when the wireless Bluetooth headset judges that a charging stopping event is detected and the wireless Bluetooth headset judges that a node voltage between the charging box and the wireless Bluetooth headset is equal to a preset value, temporarily ending a charging mode of the wireless Bluetooth headset; and after the communication between the charging box and the wireless Bluetooth headset is finished, the charging box and the wireless Bluetooth headset are enabled to recover the charging mode, so that the charging box charges the wireless Bluetooth headset.
According to an example of this case, propose a wireless bluetooth headset charging box system includes: a wireless bluetooth headset, comprising: a earphone controller, a first switch coupled and controlled by the earphone controller, a second switch coupled to the first switch; and a charging box removably coupled to the wireless bluetooth headset, the charging box comprising: a charging box controller, a third switch coupled to and controlled by the charging box controller, and a fourth switch coupled to the third switch, and coupled to a voltage divider circuit for dividing a voltage source to generate a node voltage. In a charging state, the first switch, the second switch, the third switch and the fourth switch are turned on, and the node voltage is a first voltage value. In a communication state, the first switch, the second switch, the third switch and the fourth switch are turned off, and the node voltage is a second voltage value, wherein the first voltage value is higher than the second voltage value.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
Fig. 1 is a circuit diagram of a wireless bluetooth headset charging box system according to an embodiment of the present disclosure.
Fig. 2 is a schematic view of a charging mode of a wireless bluetooth headset charging box system according to an embodiment of the disclosure.
Fig. 3 is a schematic view of a communication mode of a wireless bluetooth headset charging box system according to an embodiment of the disclosure.
Fig. 4 is a flowchart illustrating an active communication method of a charging box of a wireless bluetooth headset charging box system according to an embodiment of the present disclosure.
Fig. 5 is a flowchart illustrating an active communication method of a wireless bluetooth headset charging box system according to an embodiment of the present disclosure.
Wherein, the reference numbers:
100: wireless Bluetooth headset box system that charges
110: wireless Bluetooth earphone
120: charging box
111: earphone controller
Q1-Q7: switch with a switch body
R1-R4, Rsense: resistance (RC)
Cin: capacitor with a capacitor element
P1-P4: pin
121: controller of charging box
122: voltage divider circuit
410, 510, 565: step (ii) of
Detailed Description
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
the technical terms in the specification refer to the common terms in the technical field, and if the specification explains or defines a part of the terms, the explanation of the part of the terms is subject to the explanation or definition in the specification. Various embodiments of the present invention each have one or more technical features. In the present invention, the present invention provides a method for implementing a mobile communication system, which is capable of providing a mobile communication system with a plurality of mobile communication devices.
Fig. 1 shows a circuit diagram of a wireless bluetooth headset charging box system according to an embodiment of the present disclosure. As shown in fig. 1, the wireless bluetooth headset charging box system 100 includes: a wireless bluetooth headset 110 and a charging box 120. The coupling between the wireless bluetooth headset 110 and the charging box 120 is removable. In this embodiment, the wireless bluetooth headset 110 may be a left headset or a right headset, and the left headset and the right headset communicate with each other through bluetooth.
The wireless bluetooth headset 110 includes: the earphone controller 111, switches Q1, Q2, Q6, resistor R1, capacitor Cin, and the first charging and communication pin P1 and the first ground pin P2.
The charging box 120 includes: the charging box controller 121, the switches Q3, Q4, Q5, Q7, the voltage divider circuit 122, the resistor R4, the sensing resistor Rsense, the second charging and communication pin P3, and the second ground pin P4. The voltage divider circuit 122 includes resistors R2 and R3, for example.
In the following description, the switches Q2 and Q4 are PMOS transistors, and the switches Q1, Q3, Q5-Q7 are NMOS transistors. Of course, the present invention is not limited thereto.
The switch Q1 includes: a gate coupled to node N1 of headphone controller 111; a source electrode grounded; and a drain coupled to the resistor R1 and the gate of the switch Q2. The gate of the switch Q1 receives the control signal CN1 output by the node N1 of the headphone controller 111. When the wireless bluetooth headset 110 is in a charging state, the control signal CN1 controls the switch Q1 to be on; when the wireless bluetooth headset 110 is in the communication state, the control signal CN1 controls the switch Q1 to be turned off.
The switch Q2 includes: a gate coupled to the drain of the switch Q1 and the resistor R1; a source coupled to the headphone controller 111; and a drain coupled to the node voltage VBUS. When the wireless bluetooth headset 110 is in a charging state, the switch Q2 is turned on; when the wireless bluetooth headset 110 is in the communication state, the switch Q2 is turned off. In addition, the switch Q2 can further disconnect the influence of the capacitor Cin on the node voltage VBUS in the communication mode. The node voltage VBUS is the node voltage of the first charging and communication pin P1 and the second charging and communication pin P3.
The switch Q6 includes: a gate coupled to the signal VIO 1; a source coupled to the nodes N2 and N3 of the headphone controller 111; and a drain coupled to the node voltage VBUS. The switch Q6 serves as a level shifter (level shifter) for converting the node voltage VBUS of high level and the UART signal of low level to each other. That is, the UART signal can be transmitted or received between the wireless bluetooth headset 110 and the charging box 120, and the low level UART signal is converted into the higher level node voltage VBUS by the switches Q6 and Q7. Nodes N2 and N6 may be UART signal inputs, and nodes N3 and N7 may be UART signal outputs. That is, the switch Q6 remains on, either in the charging state or the communicating state.
The resistor R1 is coupled between the gate and the source of the switch Q2. The capacitor Cin is coupled between the node N4 of the headphone controller 111 and the ground.
The switch Q3 includes: a gate coupled to node N5 of the charge box controller 121; a source coupled to ground; and a drain coupled to the gate of switch Q4. The gate of switch Q3 receives the control signal CN2 output by node N5 of the charge box controller 121. When the charging box 120 is in a charging state, the control signal CN2 controls the switch Q3 to be on; when the charging box 120 is in the communication state, the control signal CN2 controls the switch Q3 to be turned off.
The switch Q4 includes: a gate coupled to the drain of switch Q3; a source coupled to a voltage source VDD (e.g., but not limited to, 5V); and a drain coupled to the node voltage VBUS. When the charging box 120 is in the charging state, the switch Q4 is on; when the charging box 120 is in the communication state, the switch Q4 is turned off.
The switch Q5 includes: a gate coupled to a voltage source VDD through a resistor R4; a source coupled to ground; and a drain coupled to the voltage divider 122. When the charging box 120 is in the charging state, the switch Q5 is off; when the charging box 120 is in the communication state, the switch Q5 is turned on. The switch Q5 is optional, and the switch Q5 can make the charging box 120 more power-saving.
The switch Q7 includes: a gate coupled to the signal VIO 2; a source coupled to the nodes N6 and N7 of the charge box controller 121; and a drain coupled to the node voltage VBUS. The switch Q7 serves as a level shifter for converting the node voltage VBUS of high level to a voltage of low level. That is, the switch Q7 remains on, either in the charging state or the communicating state.
The voltage divider circuit 122 includes resistors R2 and R3. The resistor R2 is coupled between the voltage source VDD and the node voltage VBUS. The resistor R3 is coupled between the node voltage VBUS and the drain of the switch Q5. The voltage dividing circuit 122 may divide the voltage source VDD into the node voltage VBUS. For example, when the resistors R2 and R3 have the same resistance value, the voltage source VDD is 5V, and the node voltage VBUS is 2.5V. It should be understood that the present invention is not limited thereto.
The resistor R4 is coupled between the voltage source VDD and the gate of the switch Q5.
The sense resistor Rsense is coupled between the node GND and the ground, and is coupled to the charging box controller 121. The charging box controller 121 may detect the voltage across the resistor Rsense to determine whether the wireless bluetooth headset 110 is placed in the charging box 120; and determining whether the wireless bluetooth headset 110 sends an active communication signal.
According to the charging current IBUS, the charging box controller 121 may determine whether the left earphone or the right earphone is inserted into the charging box 120. After determining which earphone enters the charging box 120, the charging box controller 121 determines how to communicate. Alternatively, according to the charging current IBUS, the charging box controller 121 may determine whether the wireless bluetooth headset 110 is being fully charged, and then the charging box controller 121 communicates with the wireless bluetooth headset 110 to determine whether the wireless bluetooth headset 110 is fully charged.
The wireless bluetooth headset 110 and the charging box 120 are in physical and electrical contact with each other through 4 pins P1-P4. When the wireless bluetooth headset 110 is disposed in the charging box 120, the first charging and communication pin P1 is electrically connected to the second charging and communication pin P3, and the charging box 120 charges the wireless bluetooth headset 110 through the first charging and communication pin P1 and the second charging and communication pin P3 which are in contact with each other. In addition, the charging box 120 and the wireless bluetooth headset 110 communicate with each other through the first charging and communication pin P1 and the second charging and communication pin P3. That is, the communication signals transmitted and received by the earphone controller 111 and the charging box controller 121 are obtained by: a switch Q6, a first charging and communication pin P1, a second charging and communication pin P3, and a switch Q7.
The communication between the charging box 120 and the bluetooth wireless headset 110 includes time division duplex communication.
Fig. 2 is a schematic diagram illustrating a charging mode of a wireless bluetooth headset charging box system according to an embodiment of the disclosure. In the charging mode, the control signal CN1 controls the switch Q1 to be turned on and the control signal CN2 controls the switch Q3 to be turned on. Since the switch Q1 is turned on, grounding the gate of the switch Q2, the switch Q2 is turned on. Similarly, since the switch Q3 is turned on, the gate of the switch Q4 is grounded, and the switch Q4 is turned on. Since the switch Q3 is on, grounding the gate of the switch Q5, the switch Q5 is off. When charged, the node voltage VBUS is approximately equal to the voltage of the voltage source VDD (since the switch Q4 is conductive).
Fig. 3 is a schematic diagram illustrating a communication mode of a wireless bluetooth headset charging box system according to an embodiment of the disclosure. In the communication mode, the control signal CN1 controls the switch Q1 to be turned off and the control signal CN2 controls the switch Q3 to be turned off. Since the switch Q1 is off, VGS of the switch Q2 is not enough to turn on the switch Q2, and the switch Q2 is off. Similarly, since the switch Q3 is off, so that the gate voltage of the switch Q5 is almost equal to the voltage source VDD, the switch Q5 is on. Since the switch Q3 is off so that current hardly flows through the resistor R4, the gate voltage of the switch Q4 is almost equal to the voltage source VDD, and the switch Q4 is off. Therefore, when in the communication mode, the node voltage VBUS is VDD × R3/(R2+ R3) because the switch Q5 is turned on. If VDD is 5V and the resistors R2 and R3 have equal resistance values, the node voltage VBUS is VDD R3/(R2+ R3) is 2.5V when in the communication mode.
Therefore, the earphone controller 111 can determine whether it is currently in the charging mode or the communication mode by detecting the node voltage VBUS.
Referring to fig. 4, a flowchart of an active communication method of a charging box of a wireless bluetooth headset charging box system according to an embodiment of the present disclosure is shown. In step 410, the charging box 120 actively enters the communication mode. In step 415, the switch Q4 (Q4 may also be referred to as a charging switch for convenience of description) of the charging box 120 is turned off to temporarily end the charging mode of the charging box 120, and the charging box controller 121 waits for a period of time. In step 420, the earphone controller 111 determines whether a "stop charging event" is detected and determines whether the node voltage VBUS is a predetermined value. Here, the "stop charging event" represents that when the headphone controller 111 detects that the node voltage VBUS is lower than a threshold (for example, but not limited to, 4V if VDD is 5V), the headphone controller 111 recognizes that it is the "stop charging event". When the earphone controller 111 recognizes the "stop charging event", the earphone controller 111 further determines whether the node voltage VBUS is a predetermined value. Here, the predetermined value is, as shown in fig. 3, the value of the node VBUS (for example, but not limited to, 2.5V) when in the communication mode. If the wireless bluetooth headset 110 is actually removed from the charging box 120, the node voltage VBUS detected by the headset controller 111 will be 0V. That is, in step 420, when the earphone controller 111 determines that the "charging stop event" is detected, the earphone controller 111 determines that the wireless bluetooth earphone 110 is removed from the charging box 120 (the node voltage VBUS is lower than 0.5V) or determines that the charging box 120 intends to communicate with the wireless bluetooth earphone 110 (the node voltage VBUS is 2.5V) according to the detected node voltage VBUS is lower than a real out-of-the-cabin threshold (e.g., 0.5V) or a predetermined value. When the detected node voltage VBUS is lower than a real out-of-cabin threshold, the headset controller 111 determines that the wireless bluetooth headset 110 is removed from the charging box 120 (i.e., a real out-of-cabin event occurs).
If step 420 is yes (the headset controller 111 detects the "stop charging event" and the node voltage VBUS is the predetermined value), the headset controller 111 controls the wireless bluetooth headset 110 to enter the communication mode. Therefore, in step 425, the switch Q2 (for convenience of illustration, Q2 may also be referred to as a charging switch) is turned off to temporarily end a charging mode of the wireless bluetooth headset 110.
In step 430, the charging box 120 receives and transmits the communication signal. In step 435, the wireless bluetooth headset 110 enters a communication mode to transmit and receive communication signals. That is, in steps 430 and 435, the charging box 120 communicates with the wireless bluetooth headset 110.
In step 440, the charging box 120 determines whether the communication is over. In step 445, the bluetooth headset 110 determines whether the communication is over. If the communication is not finished, the charging box 120 and the wireless bluetooth headset 110 continue to communicate with each other. If the communication is over, in step 450, the switch Q4 is controlled to be turned on to make the charging box 120 return to the charging mode; and, in step 455, the switch Q2 is controlled to be turned on to make the wireless bluetooth headset 110 return to the charging mode. In step 460, the charging box 120 and the wireless bluetooth headset 110 are both in the charging mode, so that the charging box 120 charges the wireless bluetooth headset 110.
In the present embodiment, the charging box 120 actively communicates with the wireless bluetooth headset 110 on the premise that, for example, the charging box 120 determines that the wireless bluetooth headset 110 is close to the fully charged state, and the charging box 120 and the wireless bluetooth headset 110 can communicate with each other to confirm the situation. After the wireless bluetooth headset 110 is fully charged, the charging box 120 may turn off the voltage source VDD to save power through the communication between the charging box 120 and the wireless bluetooth headset 110, and the wireless bluetooth headset 110 may enter a deep sleep mode to save power.
Referring now to fig. 5, therein is shown a flowchart of an active communication method of a wireless bluetooth headset charging box system according to an embodiment of the present disclosure. In step 510, the wireless bluetooth headset 110 actively enters a communication mode. In step 515, the headphone controller 111 makes the charging current IBUS smaller than a current threshold (e.g., but not limited to 1 mA). In step 520, when the charging box controller 121 detects that the charging current IBUS is smaller than the current threshold (the charging box 120 may determine that the wireless bluetooth headset 110 is fast-charged, but this is not the case), the charging box controller 121 controls the switch Q4 of the charging box 120 to be turned off to temporarily end the charging mode of the charging box 120, and the charging box controller 121 waits for a period of time.
In step 525, the earphone controller 111 determines whether a "stop charging event" is detected and the earphone controller 111 determines whether the node voltage VBUS is the predetermined value. The details of step 525 may be the same or similar to step 420, and are therefore omitted here.
If step 525 is true (the headset controller 111 detects a "stop charging event" and the node voltage VBUS is the predetermined value), in step 530, the headset controller 111 turns off the switch Q2 to temporarily end the charging mode of the wireless bluetooth headset 110.
In step 535, the charging box 120 enters a communication mode to transmit and receive communication signals. In step 540, the wireless bluetooth headset 110 receives and transmits the communication signal. That is, in steps 535 and 540, the charging box 120 communicates with the wireless bluetooth headset 110.
In step 545, the charging box 120 determines whether the communication is finished. In step 550, the wireless bluetooth headset 110 determines whether the communication is over. If the communication is not finished, the charging box 120 and the wireless bluetooth headset 110 continue to communicate with each other. If the communication is over, in step 555, the switch Q4 is controlled to be turned on to make the charging box 120 return to the charging mode; and in step 560, the switch Q2 is controlled to be turned on so that the wireless bluetooth headset 110 returns to the charging mode. In step 565, the charging box 120 and the wireless bluetooth headset 110 are both in the charging mode, so that the charging box 120 charges the wireless bluetooth headset 110.
In this embodiment, the active communication of the wireless bluetooth headset 110 may be premised on that the wireless bluetooth headset 110 is linked with a mobile phone (or other intelligent device) and the mobile phone wants to know the remaining power of the charging box 120. After the charging box 120 communicates with the wireless bluetooth headset 110, the wireless bluetooth headset 110 informs the remaining capacity of the charging box 120 to the mobile phone through bluetooth, and the remaining capacity of the charging box 120 can be displayed on the mobile phone.
As can be seen from the above, in the embodiment, since the number of communication/charging receptions between the charging box 120 and the wireless bluetooth headset 110 can be reduced, the embodiment can reduce the hardware cost of the charging box 120 and the wireless bluetooth headset 110.
In addition, as shown in the communication method of the embodiment of the present disclosure, the communication time is faster, and the communication accuracy can be improved. Because the charging box 120 and the wireless bluetooth headset 110 can determine accurately whether to enter the communication mode.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (18)

1. A communication method of a wireless Bluetooth headset charging box system is characterized by comprising the following steps:
a charging box actively enters a communication mode;
temporarily ending a charging mode of the charging box and enabling the charging box to wait for a period of time;
when a wireless Bluetooth headset judges and detects a charging stopping event and the wireless Bluetooth headset judges that a node voltage between a charging box and the wireless Bluetooth headset is equal to a preset value, temporarily ending a charging mode of the wireless Bluetooth headset and enabling the wireless Bluetooth headset to enter a communication mode; and
after the communication between the charging box and the wireless Bluetooth headset is finished, the charging box and the wireless Bluetooth headset are made to reply to the charging mode, and the charging box is made to charge the wireless Bluetooth headset.
2. The communication method of claim 1, wherein a charging switch of the charging box is turned off to temporarily end the charging mode of the charging box.
3. The communication method of claim 1, wherein a charging switch of the wireless bluetooth headset is controlled to be turned off to temporarily end the charging mode of the wireless bluetooth headset.
4. The communication method of the wireless Bluetooth headset charging box system according to claim 1,
when the wireless Bluetooth headset detects that the node voltage is lower than a threshold value, the wireless Bluetooth headset judges that the charging stopping event is detected; and
when the wireless Bluetooth headset detects that the node voltage is lower than a real outbound critical value, the wireless Bluetooth headset judges that a real outbound event is detected.
5. The communication method of claim 1, wherein a charging switch of the charging box is turned on to enable the charging box to return to the charging mode.
6. The communication method of the wireless bluetooth headset charging box system of claim 1, wherein a charging switch of the wireless bluetooth headset is controlled to be turned on so that the wireless bluetooth headset returns to the charging mode.
7. A communication method of a wireless Bluetooth headset charging box system is characterized by comprising the following steps:
a wireless Bluetooth headset actively enters a communication mode;
the wireless Bluetooth earphone enables a charging current to be smaller than a current threshold value;
when a charging box detects that the charging current is smaller than the current threshold, temporarily ending a charging mode of the charging box, and enabling the charging box to wait for a period of time;
when the wireless Bluetooth headset judges that a charging stopping event is detected and the wireless Bluetooth headset judges that a node voltage between the charging box and the wireless Bluetooth headset is equal to a preset value, temporarily ending a charging mode of the wireless Bluetooth headset; and
after the communication between the charging box and the wireless Bluetooth headset is finished, the charging box and the wireless Bluetooth headset are made to reply to the charging mode, and the charging box is made to charge the wireless Bluetooth headset.
8. The communication method of claim 7, wherein a charging switch of the charging box is turned off to temporarily end the charging mode of the charging box.
9. The communication method of claim 7, wherein a charging switch of the wireless bluetooth headset is controlled to be turned off to temporarily end the charging mode of the wireless bluetooth headset.
10. The communication method of the wireless Bluetooth headset charging box system according to claim 7,
when the wireless Bluetooth headset detects that the node voltage is lower than a threshold value, the wireless Bluetooth headset judges that the charging stopping event is detected; and
when the wireless Bluetooth headset detects that the node voltage is lower than a real outbound critical value, the wireless Bluetooth headset judges that a real outbound event is detected.
11. The communication method of claim 7, wherein a charging switch of the charging box is turned on to enable the charging box to return to the charging mode.
12. The communication method of the wireless bluetooth headset charging box system of claim 7, wherein a charging switch of the wireless bluetooth headset is controlled to be turned on so that the wireless bluetooth headset returns to the charging mode.
13. A wireless Bluetooth headset charging box system, comprising:
a wireless bluetooth headset, comprising: a earphone controller, a first switch coupled and controlled by the earphone controller, a second switch coupled to the first switch; and
a charging box removably coupled to the wireless bluetooth headset, the charging box comprising: a charging box controller, a third switch coupled to and controlled by the charging box controller, a fourth switch coupled to the third switch, and a voltage divider circuit coupled to and dividing a voltage source to generate a node voltage,
in a charging state, the first switch, the second switch, the third switch and the fourth switch are turned on, and the node voltage is a first voltage value; and
in a communication state, the first switch, the second switch, the third switch and the fourth switch are turned off, and the node voltage is a second voltage value, wherein the first voltage value is higher than the second voltage value.
14. The system of claim 13, wherein the charging box further comprises a fifth switch coupled to the voltage divider circuit, the fifth switch is turned off in the charging state, and the fifth switch is turned on in the communication state.
15. The system of claim 13, wherein the wireless bluetooth headset further comprises a sixth switch coupled between the headset controller and the node voltage, the charging box further comprises a seventh switch coupled between the charging box controller and the node voltage, and the sixth switch and the seventh switch are configured to perform a potential conversion.
16. The system of claim 13, wherein the charging box further comprises a sense resistor coupled to the charging box controller, the charging box controller detecting a voltage across the sense resistor to determine whether the wireless bluetooth headset is disposed in the charging box; and judging whether the wireless Bluetooth headset sends an active communication signal.
17. The wireless bluetooth headset charging box system of claim 13, wherein the wireless bluetooth headset further comprises: a first charging and communication pin and a first grounding pin, the charging box further comprising: a second charging and communication pin and a second grounding pin, wherein the first charging and communication pin is in physical and electrical contact with the second charging and communication pin, and the first grounding pin is in physical and electrical contact with the second grounding pin.
18. The wireless Bluetooth headset charging box system of claim 13,
the earphone controller detects the node voltage to judge whether the node voltage is in the charging mode or the communication mode;
when the earphone controller detects that the node voltage is lower than a threshold value, the earphone controller judges that a charging stopping event is detected; and
when the earphone controller detects that the node voltage is lower than a real outbound critical value, the earphone controller judges that a real outbound event is detected.
CN202010079644.XA 2020-02-04 2020-02-04 Wireless Bluetooth headset charging box system and communication method thereof Pending CN113225635A (en)

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