CN108075758A - A kind of method and mobile terminal for connecting key device - Google Patents
A kind of method and mobile terminal for connecting key device Download PDFInfo
- Publication number
- CN108075758A CN108075758A CN201610998209.0A CN201610998209A CN108075758A CN 108075758 A CN108075758 A CN 108075758A CN 201610998209 A CN201610998209 A CN 201610998209A CN 108075758 A CN108075758 A CN 108075758A
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- mobile terminal
- current
- current value
- voltage
- detection resistance
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/9618—Touch switches using a plurality of detectors, e.g. keyboard
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/04—Arrangements for transmitting signals characterised by the use of a wireless electrical link using magnetically coupled devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0027—Measuring means of, e.g. currents through or voltages across the switch
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/11—Supports for sets, e.g. incorporating armrests
- H04M1/12—Adjustable supports, e.g. extensible
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Telephone Function (AREA)
Abstract
The invention discloses a kind of mobile terminal connection key device method, including：Detect the load variation of communication of mobile terminal coil；When the load of the communication coil changes, determined to flow through the current value of detection resistance according to the load variation；Button operation is performed according to the current value.The present invention further simultaneously discloses a kind of mobile terminal for connecting key device.
Description
Technical field
The present invention relates to technical field of mobile terminals more particularly to a kind of methods and mobile terminal for connecting key device.
Background technology
Electromagnetic induction technology is the hot spot of current wireless charging technical research, and technique in transmission end-coil by generating
The alternating current of certain frequency generates certain alternating current by electromagnetic induction in end-coil is received, so as to by energy from transmission
End is transferred to receiving terminal.For any terminal, since transmission end and receiving terminal transfer energy in the form of magnetic field, two
It is not run wires between person, therefore wireless electromagnetic induction technology is passive, i.e. the receiving terminal of wireless electromagnetic induction technology can
To work independently in the case of no any external power supply.
At present, it is difficult to find the wireless external equipment of the mobile terminal with keypress function in the market, such as：Mobile phone shell, due to
It is limited by the thickness and foldability of mobile phone shell, it is difficult to circuit and component are placed in mobile phone shell.It is wearable for some
The mobile terminal of product and higher waterproof requirement, key part becomes the bottleneck of waterproofing protection, therefore, it is possible to which mobile terminal is allowed not have
There is any button and realize that the keypress function of mobile terminal has very high business by the wireless external equipment with keypress function
With value；Wherein, most commonly seen mobile terminal external equipment is self-shooting bar, and wirelessly connects the self-timer of mobile terminal
Bar realizes that this self-shooting bar has bluetooth module and battery, although can realize in this way usually using Bluetooth technology
Mobile terminal wirelessly connects external equipment, still, since it must assemble bluetooth module and battery, make its cost into
This height, most users are difficult to receive.
The content of the invention
In view of this, it is mobile whole an embodiment of the present invention is intended to provide a kind of method and mobile terminal for connecting key device
End connects key device by electromagnetic induction technology, so as to realize the function of mobile terminal key by external key device.
In order to achieve the above objectives, an embodiment of the present invention provides it is a kind of connect key device method, the described method includes：
Detect the load variation of communication of mobile terminal coil；
When the load of the communication coil changes, determined to flow through the electric current of detection resistance according to the load variation
Value；
Button operation is performed according to the current value.
In said program, further included before the execution button operation：
By the current value compared with the current threshold set, if the current value is more than the current threshold of setting
Value, then perform button operation.
In said program, if the current value further includes after being more than the current threshold of setting：
Setting electric current section where determining current value, performs the button operation corresponding to setting electric current section.
In said program, the communication coil load changes, and determines to flow through detection resistance according to the load variation
Current value further include：When the communication coil load changes, detect that detection resistance both ends generate voltage, according to described
Voltage flows through the current value of detection resistance really.
In said program, the method further includes：
Electromagnetic signal is converted to alternating current by the charge coil in mobile terminal, and passes through wireless charging modular converter by friendship
Galvanic electricity is converted to direct current and charges to the mobile terminal.
The embodiment of the present invention additionally provides a kind of mobile terminal for connecting key device, and the mobile terminal includes：
Communication coil generates load for passing through when button of the electromagnetic induction in key device is pressed；
Voltage amplifier for the voltage at amplification detection resistance both ends, and is sent to baseband chip；
Baseband chip, the voltage value for being provided according to the voltage amplifier determine the load hair of the communication coil
The current value of detection resistance is flowed through during changing, button operation is performed according to the current value.
In said program, the baseband chip is additionally operable to setting electric current area where determining the current value for flowing through detection resistance
Between, perform the button operation corresponding to setting electric current section；Alternatively,
The baseband chip is additionally operable to the current value by detection resistance is flowed through compared with the current threshold set, really
When the fixed current value is more than the current threshold of setting, button operation is performed；Alternatively,
The baseband chip when being additionally operable to determine that the current value for flowing through detection resistance is more than the current threshold of setting, determines
Setting electric current section where current value, performs the button operation corresponding to setting electric current section.
In said program, the voltage amplifier further includes：
Operational amplifier during for detecting that detection resistance both ends generate voltage, amplifies the electricity at the detection resistance both ends
Pressure；
A/D modular converters, for the voltage that the operational amplifier amplifies to be converted to digital electricity by analog voltage signal
Press signal.
In said program, the mobile terminal further includes：
Inverter for the direct current of the battery in the mobile terminal to be converted to alternating current, provides for key device
Power supply.
In said program, the mobile terminal further includes：
Charging receiving coil for receiving the electromagnetic induction signal of charging transmission end, generates ac signal；
Charging modular converter, the ac signal for the charging receiving coil to be generated are converted to direct current telecommunications
Number, to be supplied to the battery of mobile terminal.
The method and mobile terminal of the external key device of mobile terminal wireless connection provided in an embodiment of the present invention, detection move
The load variation of dynamic terminal communication coil；When the load of the communication coil changes, stream is determined according to the load variation
The current value of resistance after testing；Button operation is performed according to the current value.In this way, the increase by one that mobile terminal can be given additional
Button on mobile terminal directly can also be removed mobile terminal, realize that it is pressed by key device by a or multiple key devices
Key function improves its water resistance, in addition, this scheme can also realize a kind of low cost, portable wireless self-shooting bar.
Description of the drawings
Fig. 1 is the flow diagram that the embodiment of the present invention connects key device method；
Fig. 2 is the realization flow diagram that the embodiment of the present invention connects key device method；
Fig. 3 is the structure diagram of mobile terminal of the embodiment of the present invention；
Fig. 4 is the structure diagram of mobile terminal internal module of the embodiment of the present invention；
Fig. 5 is structure diagram of the mobile terminal of the embodiment of the present invention with charge function device；
Fig. 6 is the structure diagram of key device of the embodiment of the present invention；
Fig. 7 is the structure diagram that key device of the embodiment of the present invention has multiple buttons.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described in further detail the present invention again.
Fig. 1 is the flow diagram that the embodiment of the present invention connects key device method, as shown in Figure 1, the embodiment of the present invention
The flow summary diagram of connection key device method includes：
Step 101：Detect the load variation of communication of mobile terminal coil；
Here, further included before the load variation of the detection communication of mobile terminal coil：
Input of the mobile terminal by detecting user, which operates, determines whether enabled key device；
When the input operation of user is does not enable key device, mobile terminal closes key device function, specifically, moves
Baseband chip in dynamic terminal disconnects enabled switch, and detection resistance, voltage amplifier and communication coil are in non-working condition；
When the input operation of user is enables key device, mobile terminal opening push key device function is specifically, mobile
Enabled switch is closed by the baseband chip of terminal, and detection resistance, voltage amplifier and communication coil are in running order.
Step 102：When the load of the communication coil changes, determine to flow through detection electricity according to the load variation
The current value of resistance；
Here, when user pushes button the button in device, the load of the communication coil in mobile terminal can generate change
Change, correspondingly, detecting that resistance both ends generate voltage, according to the voltage, mobile terminal is determined according to the voltage when communication
The current value of detection resistance, specifically, the voltage amplifier detection resistance two in mobile terminal are flowed through during the load variation of coil
End generates voltage, and baseband chip is supplied to after being amplified to the voltage, and baseband chip is determined to work as according to the voltage value
The current value of detection resistance is flowed through during the load variation of communication coil.
Step 103：Button operation is performed according to the current value.
In practical application, in order to avoid the button being not due in key device be pressed but the other factors such as environment
The load of the communication coil in mobile terminal is caused to generate variation, maloperation occurs, can will be examined by setting electric current threshold value
Measuring resistance, which powers on, to be flowed through small situation and ignores.
Specifically, further included before performing button operation：By the current value compared with the current threshold set, really
When the fixed current value is more than the current threshold of setting, button operation is performed.
More specifically, baseband chip in mobile terminal by the current value compared with the current threshold set, such as
Detection resistance current value described in fruit is more than the current threshold of baseband chip setting, then performs button operation；If the detection electricity
The current threshold that current value is less than baseband chip setting is hindered, then detects the load variation of communication of mobile terminal coil.It is described here
Button operation be operation represented by the button being pressed in key device.
Here, when key device is provided with multiple buttons, different buttons can connect different load resistances, so as to work as
When user presses different key or different key combination, the communication coil in mobile terminal has different load variations, in this way,
The current value for flowing through detection resistance just also differs.Specifically, mobile terminal, be specially mobile terminal in baseband chip determine
The current value of detection resistance is flowed through, setting electric current section where determining current value performs the button corresponding to setting electric current section
Operation.Wherein, different setting electric current sections is combined corresponding with the different key or different key being pressed in key device,
The correspondence is stored in the memory of terminal.
More specifically, mobile terminal, the baseband chip specially in mobile terminal determine to flow through the current value of detection resistance,
When determining that the current value is more than the current threshold of setting, setting electric current section where determining current value performs and corresponds to setting
The button operation in electric current section.For example, being provided with 2 buttons in key device, each button and key combination are pressed and set
The correspondence in electric current section is respectively that button 1 corresponds to setting electric current section 1, and button 2 corresponds to setting electric current section 2, button 1
Setting electric current section 3 corresponding with the combination of button 2.That is, user pushes button the button 1 in device, then mobile terminal
In communication coil load generate variation, flow through the current value of detection resistance in setting electric current section 1；User presses simultaneously
Button 1 and button 2 in key device, the then load of the communication coil in mobile terminal generate variation, flow through detection resistance
Current value is in setting electric current section 3.
Different key or the different key combination in device can be pushed button due to user, button described here
Operation refers to the button being pressed in key device or the operation represented by key combination.
Fig. 2 is the realization flow diagram that the embodiment of the present invention connects key device method, as shown in Fig. 2, the present invention is real
The realization flow diagram for applying example connection key device method comprises the following steps：
Step 201：Mobile terminal receive user on mobile terminals input operation, determine user input operation whether
Enabled key device, if it is, performing step 202；If NO, then step 205 is performed；
Step 202：Baseband chip in mobile terminal is closed enabled switch, at this moment, detection resistance, electricity in mobile terminal
It presses amplifier, communication coil in running order, while goes to step 203；
Step 203：It is mobile whole based on electromagnetic induction principle when user pushes button the button or key combination of device
The load of communication coil in end changes, correspondingly, detection resistance both ends generate voltage, voltage amplifier is by the voltage
It is amplified and is supplied to baseband chip, baseband chip leads to the voltage value and determines to flow through the electric current of detection resistance during load variation
Value, and by it compared with the current threshold of setting, if current value is more than current threshold, perform step 204；If institute
The current value obtained is less than setting electric current threshold value, then performs step 206；
Step 204：When baseband chip determines that the current value for flowing through detection resistance is more than the current threshold of setting, then it is determined as
Button operation is performed, such as：Take pictures, increase or reduce the operations such as volume, screen locking；
Step 205：Baseband chip disconnects enabled switch, at this point, detection resistance, voltage amplifier in mobile terminal, logical
Letter coil is in non-working condition, terminates current process；
Step 206：When baseband chip determines that the current value for flowing through detection resistance is less than the current threshold of setting, then it is determined as
Any button operation is not performed, and the button in key device is not pressed at this time；
Further, it is as follows to flow through Current calculation principle in detection resistance：
Amplifier module in voltage amplifier amplifies the voltage value at detection resistance both ends, and exports and give A/D modular converters；
The analog voltage that voltage amplifier exports is converted into digital voltage signal by A/D modular converters, is provided to baseband chip；Base
Microarray strip determines currently to flow through the size of current of detection resistance according to the resistance value of digital voltage signal and detection resistance, and should
Electric current, when electric current is more than the current threshold of setting, performs button operation compared with the current threshold set；Wherein, examine
Measuring resistance can select the smaller resistance of resistance value, to avoid larger pressure drop is generated, cause communication coil electricity shortage.
It charges in addition, mobile terminal of the embodiment of the present invention can also be realized by wireless charging device to mobile terminal, tool
Body, the electromagnetic induction signal that the charge coil in mobile terminal is generated by wireless charger generates alternating current, then passes through nothing
Micro USB electricity modular converter by alternating current be converted to direct current supply electricity to mobile terminal battery charge.
Fig. 3 is the structure diagram of mobile terminal of the embodiment of the present invention, as shown in figure 3, mobile terminal of the embodiment of the present invention
Structure diagram include baseband chip 301, voltage amplifier 302 and communication coil 303；Wherein,
Communication coil 303 generates load for passing through when button of the electromagnetic induction in key device is pressed；
Voltage amplifier 302 for the voltage at 304 both ends of amplification detection resistance, and is sent to baseband chip；
Baseband chip 301, the voltage value for being provided according to the voltage amplifier determine the communication coil 303
Load flows through the current value of detection resistance 304 when changing, button operation is performed according to the current value.
Further, the baseband chip 301 is additionally operable to setting electric current area where determining the current value for flowing through detection resistance
Between, perform the button operation corresponding to setting electric current section.
Further, the baseband chip 301 is additionally operable to that the current value of detection resistance and the current threshold of setting will be flowed through
It is compared, when determining that the current value is more than the current threshold of setting, performs button operation.
Further, the baseband chip 301 is additionally operable to determine the electric current that the current value for flowing through detection resistance is more than setting
During threshold value, setting electric current section where determining current value performs the button operation corresponding to setting electric current section.
Further, as shown in figure 4, baseband chip includes：Receiving module 409, processing module 410；Wherein,
Receiving module 409, the digital signal voltage value provided for receiving voltage amplifier；
Processing module 410, for determining to flow through the electricity of detection resistance during load variation by the digital signal voltage value
Flow valuve, and compared with the current threshold of setting, if the current value is more than setting electric current threshold value, perform button behaviour
Make；
Baseband chip is additionally operable to control enabled switch according to the input of user operation, specifically, defeated as user
When entering to operate to enable key device, enabled switch is closed, thus when the button in key device is pressed, communication coil
Load changes；When the input operation of user is does not enable key device, enabled switch is disconnected.
As shown in figure 4, voltage amplifier includes：Operational amplifier 402 and A/D modular converters 403；Wherein,
Operational amplifier 402, for detect detection resistance both ends generate voltage when, amplify the detection resistance both ends
Voltage is amplified, and is sent to A/D modular converters 403；
A/D modular converters 403, the voltage for the operational amplifier 402 to be amplified are converted to by analog voltage signal
Digital voltage signal.
When key device is peripheral hardware key device, i.e. key device and mobile terminal is without connection relation physically, such as
Shown in Fig. 4, the mobile terminal further includes：Inverter 404；Wherein,
Inverter 404, for the direct current of the battery in mobile terminal to be converted to alternating current, to be provided for key device
Power supply.
Fig. 5 is structure diagram of the mobile terminal of the embodiment of the present invention with charge function device, as shown in figure 5, of the invention
When mobile terminal described in embodiment has wireless charging function, further include：Charging modular converter 501, charging receiving coil 502；
Wherein,
Charging receiving coil 502 for receiving the electromagnetic induction signal of charging transmission end, generates ac signal；
Charging modular converter 501, the ac signal for charging receiving coil to be generated are converted to DC signal, with
It is supplied to the battery of mobile terminal.
Fig. 6 is the structure diagram of key device of the embodiment of the present invention, as shown in fig. 6, key device of the embodiment of the present invention
Structure includes：Peripheral hardware coil 601, load resistance 602 and button 603；Wherein,
Peripheral hardware coil 601, for generating ac signal；
Load resistance 602, for when generating AC signal in peripheral hardware coil, AC signal to generate when flowing through load resistance
Energy expenditure, and then load variation can be generated in communication of mobile terminal coil；
Button 603 for turning on the circuit turn-on being made of peripheral hardware coil 601 and load resistance 602, generates energy and disappears
Consumption, and then load variation can be generated in communication of mobile terminal coil.
Fig. 7 is that key device of the embodiment of the present invention has the structure diagrams of multiple buttons, compared to Fig. 6, in key device
Button forms a button circuit with load resistance, and multiple button circuits are parallel relationship, and the resistance value of load resistance 1,2,3 is not
Identical, mobile terminal sets corresponding current threshold according to load resistance 1,2,3, corresponding button operation is performed, such as Fig. 7 institutes
Show, when button 1 is pressed, the circuit conducting where button 1, load resistance 1 generates energy expenditure, correspondingly, in mobile terminal
Communication coil load change, baseband chip determine it is described load variation when flow through the current value of detection resistance and with setting
Fixed current threshold is compared, if the current value is more than the current threshold of setting, it is determined that the current value is being set
In electric current section 1, corresponding button operation is performed, i.e. button 1 is pressed corresponding operation, can similarly obtain, button 2,3 or difference
Corresponding button operation is performed when key combination is pressed.
As described above, the method for the connection key device of the embodiment of the present invention is based on electromagnetic induction technology, realize
A kind of mobile terminal can wirelessly connect external key device, on the other hand, this key device be it is passive,
It is powered by mobile terminal, it is possible thereby to design the mobile terminal of higher water resistance, mobile terminal can be allowed not any
Button and the keypress function of mobile terminal is realized by external equipment with keypress function or increases by one for mobile terminal
Or more than one keypress function, it meets the needs of users.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention, it is all
All any modification, equivalent and improvement made within the spirit and principles in the present invention etc. should be included in the protection of the present invention
Within the scope of.
Claims (10)
- A kind of 1. method of mobile terminal connection key device, which is characterized in that this method includes：Detect the load variation of communication of mobile terminal coil；When the load of the communication coil changes, determined to flow through the current value of detection resistance according to the load variation；Button operation is performed according to the current value.
- 2. it according to the method described in claim 1, it is characterized in that, is further included before the execution button operation：By the current value compared with the current threshold set, if the current value is more than the current threshold of setting, Perform button operation.
- 3. if according to the method described in claim 2, it is characterized in that, the current value is more than the current threshold of setting It further includes afterwards：Setting electric current section where determining current value, performs the button operation corresponding to setting electric current section.
- 4. according to the method described in claim 1, it is characterized in that, communication coil load changes, according to described negative It carries variation and determines that the current value for flowing through detection resistance further includes：When the communication coil load changes, detection electricity is detected It hinders both ends and generates voltage, flow through the current value of detection resistance really according to the voltage.
- 5. method according to any one of claims 1 to 4, which is characterized in that the method further includes：Electromagnetic signal is converted to alternating current by the charge coil in mobile terminal, and passes through wireless charging modular converter by alternating current Direct current is converted to charge to the mobile terminal.
- 6. a kind of mobile terminal for connecting key device, which is characterized in that the mobile terminal includes：Communication coil generates load for passing through when button of the electromagnetic induction in key device is pressed；Voltage amplifier for the voltage at amplification detection resistance both ends, and is sent to baseband chip；Baseband chip, the voltage value for being provided according to the voltage amplifier determine that the load of the communication coil becomes The current value of detection resistance is flowed through during change, button operation is performed according to the current value.
- 7. mobile terminal according to claim 6, which is characterized in thatThe baseband chip is additionally operable to setting electric current section where determining the current value for flowing through detection resistance, and execution, which corresponds to, to be set The button operation in constant current section；Alternatively,The baseband chip is additionally operable to the current value by detection resistance is flowed through compared with the current threshold set, determines institute When stating current value more than the current threshold set, button operation is performed；Alternatively,The baseband chip when being additionally operable to determine that the current value for flowing through detection resistance is more than the current threshold of setting, determines electric current Setting electric current section where value, performs the button operation corresponding to setting electric current section.
- 8. mobile terminal according to claim 6, which is characterized in that the voltage amplifier further includes：Operational amplifier during for detecting that detection resistance both ends generate voltage, amplifies the voltage at the detection resistance both ends；A/D modular converters, for the voltage that the operational amplifier amplifies to be converted to digital voltage letter by analog voltage signal Number.
- 9. mobile terminal according to claim 6, which is characterized in that the mobile terminal further includes：For the direct current of the battery in the mobile terminal to be converted to alternating current, power supply is provided for key device for inverter.
- 10. according to any mobile terminal of claim 6 to 9, which is characterized in that the mobile terminal further includes：Charging receiving coil for receiving the electromagnetic induction signal of charging transmission end, generates ac signal；Charging modular converter, the ac signal for the charging receiving coil to be generated are converted to DC signal, To be supplied to the battery of mobile terminal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610998209.0A CN108075758A (en) | 2016-11-11 | 2016-11-11 | A kind of method and mobile terminal for connecting key device |
| PCT/CN2017/092533 WO2018086368A1 (en) | 2016-11-11 | 2017-07-11 | Method for connecting key device, and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610998209.0A CN108075758A (en) | 2016-11-11 | 2016-11-11 | A kind of method and mobile terminal for connecting key device |
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| CN108075758A true CN108075758A (en) | 2018-05-25 |
Family
ID=62109336
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610998209.0A Pending CN108075758A (en) | 2016-11-11 | 2016-11-11 | A kind of method and mobile terminal for connecting key device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108075758A (en) |
| WO (1) | WO2018086368A1 (en) |
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| WO2018086368A1 (en) | 2018-05-17 |
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