CN103312381A - Wireless device pairing method - Google Patents
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- CN103312381A CN103312381A CN2012100627324A CN201210062732A CN103312381A CN 103312381 A CN103312381 A CN 103312381A CN 2012100627324 A CN2012100627324 A CN 2012100627324A CN 201210062732 A CN201210062732 A CN 201210062732A CN 103312381 A CN103312381 A CN 103312381A
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Abstract
The invention discloses a wireless device pairing method. The method comprises the steps that if a first wireless device is triggered, a first wireless device transmits a pairing signal through first radio frequency transmission intensity and a pairing transmission channel; if a second wireless device receives the pairing signal, the second wireless device transmits a first response signal through the pairing transmission channel, the second wireless device starts a pairing mode, and a communication address is placed in a first in first out register; if the first wireless device is triggered again, the first wireless device similarly transmits the pairing signal again; if the second wireless device receives the pairing signal again, the second wireless device transmits a second response signal to the first wireless device through second radio frequency transmission intensity and the pairing transmission channel, and the second wireless device enters the pairing mode and stores the communication address, wherein the second response signal indicates the communication address.
Description
Technical field
The present invention is about a kind of method of wireless device pairing, the method that particularly can match at any time about a kind of wireless device.
Background technology
It is extensive that the wireless communication applications scope has become.For example, in the short distance wireless between host computer and the peripheral equipment (such as slide-mouse, earphone, microphone and printer etc.) lead to or wireless device between file transfer etc.Present many wireless devices are keyboard, slide-mouse, earphone, loudspeaker, printer, mobile computer, mobile phone, facsimile machine for example, even digital camera etc., the communication protocol that all utilizes less radio-frequency conduct and host computer pairing to lead to, its convenience is from unquestionable.
Yet, wireless device still has in the use and makes us feeling deeply inconvenience, be paired into example with a Wireless Keyboard and a host computer, it must match first before using, host computer needs to install first the application program that drives Wireless Keyboard, make host computer can search Wireless Keyboard, the user carries out the pairing of host computer and Wireless Keyboard in the startup application program.The user often spends many times the application program that drives Wireless Keyboard is installed, or sets the program that drives wireless device.Therefore, the convenience that often increases user's operation is led in the pairing of the host computer of Wireless Keyboard, or increases flow process and the step of user's operation.
Secondly, the user can also come and Wireless Keyboard pairing with a transceiver.The user needs first transceiver to be coupled host computer, and in a Preset Time, press the pairing button of transceiver and the pairing button of Wireless Keyboard, make transceiver can search Wireless Keyboard, the user selects Wireless Keyboard by host computer again, finishes immediately pairing and sets.Therefore, the user often surpasses the pairing button of pressing the two ends such as Wireless Keyboard and transceiver in the Preset Time; Or transceiver can not lead to the Wireless Keyboard pairing above a Preset Time; Or increase the operating procedure that the user repeatedly presses the pairing button.
Moreover the pairing button is for avoiding user's false touch in operation, and the pairing button that is arranged at the two ends such as wireless device and transceiver also diminishes increasingly.Therefore, the user will press the pairing button at the two ends such as transceiver and wireless device, with the step of pressing the pairing button of bringing inconvenience property.
Based on above-mentioned, the user installs the application program that drives wireless device; Or set the program that drives wireless device and come to lead to the wireless device pairing; Or the user presses the pairing button at the two ends such as transceiver and wireless device, can't satisfy user's demand.Be with, if by application program, and the pairing of setting up between the wireless device can be according to user's Demand the time leads to, and will promote the convenience that pairing is used between the wireless device between the wireless device.This is the direction that is worth research.
Summary of the invention
In view of this, the object of the present invention is to provide the method for a kind of wireless device pairing so that between the wireless device by application program, and the pairing of setting up between the wireless device can be according to user's Demand the time is led to.
The present invention proposes a kind of method of wireless device pairing, the method comprises the following steps: to judge whether a first wireless device is triggered, if, then first wireless device is with a default pairing address, set up a pairing transmission channel, and via matching transmission channel with one first radio frequency transmission intensity, transmit one first pairing signal to a second wireless device; Judge whether second wireless device receives the first pairing signal, if, then second wireless device transmits one first response signal to first wireless device by the pairing transmission channel, second wireless device is opened a pairing mode, and produce one first mailing address, the first mailing address is placed into a first-in first-out register of second wireless device, and second wireless device is set one second radio frequency transmission intensity; Judge whether first wireless device is triggered again, if then first wireless device transmits the first pairing signal to second wireless device with the first radio frequency transmission intensity and pairing transmission channel; And judge whether second wireless device receives the first pairing signal again, if, then second wireless device transmits one second response signal to first wireless device with the second radio frequency transmission intensity and pairing transmission channel, and second wireless device stores the first mailing address, and leaves pairing mode.
In an embodiment of the present invention, above-mentioned the first radio frequency transmission intensity is the minimum radio frequency transmission intensity of first wireless device, and the second radio frequency transmission intensity is the minimum radio frequency transmission intensity of second wireless device.
In an embodiment of the present invention, on be set forth in and judge in the step whether first wireless device be triggered, do not receive the first response signal of second wireless device if also comprise the following steps: first wireless device, judge then whether the number of times that first wireless device transmits the first pairing signal reaches a retry higher limit; When the number of times that transmits the first pairing signal when first wireless device did not reach the retry higher limit, then first wireless device transmitted the first pairing signal again to second wireless device; And the number of times that transmits the first pairing signal when first wireless device is when reaching the retry higher limit, then first wireless device suspends transmission the first pairing signal to second wireless device, it is a preset data address that first wireless device also can be replied the pairing address, and first wireless device waits for and to be triggered, and wherein the preset data address is one of them of a plurality of data addresses in the transmission channel.
In an embodiment of the present invention, on be set forth in to judge whether second wireless device receives in the step of the first pairing signal, also comprise the following steps: second wireless device set up in advance the pairing transmission channel; If first wireless device is received the first response signal of second wireless device, then will to match that the address replys be a preset data address to first wireless device, and first wireless device is waited for and again being triggered; Judge whether complete reception the first pairing signal of second wireless device; If complete reception the first pairing signal of second wireless device judges then whether the first pairing signal transmits from the pairing address of matching in the transmission channel; Wherein when judging that the first pairing signal is transmission from the pairing address of matching in the transmission channel, represent that then second wireless device has received the first pairing signal; And if second wireless device received the first pairing signal, will be ready for one and reply bag, reply and comprise the first mailing address, and will reply and wrap the first-in first-out register of inserting second wireless device.
In an embodiment of the present invention, on be set forth in and judge whether second wireless device receives in the step of the first pairing signal again, receive the second response signal of second wireless device if also comprise the following steps: first wireless device, then first wireless device can receive that also second wireless device before inserted the answer bag of first-in first-out register; And first wireless device can take out the first mailing address by replying bag, and stores the first mailing address, and sets up one first transmission channel with the first mailing address.
In an embodiment of the present invention, above-mentioned first wireless device has a pairing button, when the pairing button is pressed, first wireless device is triggered and corresponding first pairing signal that produces, and after first wireless device receives the first response signal, when the pairing button was pressed again, first wireless device was triggered to produce the first pairing signal again.
In an embodiment of the present invention, above-mentioned first wireless device has a pairing button, when the pairing button is pressed, first wireless device is triggered and corresponding first pairing signal that produces, and after first wireless device received the first response signal, first wireless device was triggered to produce the first pairing signal automatically again.
In sum, the method of wireless device pairing of the present invention can be pressed the pairing button of first wireless device at any time by the user, make first wireless device with the first radio frequency transmission intensity and pairing transmission channel, mailing address is selected and determined to the transmission pairing signal to second wireless device by second wireless device.Produce pairing signal and be transferred to second wireless device when first wireless device is triggered again, first wireless device will be obtained mailing address from the answer bag of the second response signal, and increasing between the wireless device by the method can be at any time and the Rapid Establishment pairing chance of leading to.
For above and other purpose of the present invention, feature and advantage can be become apparent, preferred embodiment of the present invention cited below particularly, and cooperate appended graphicly, be described in detail below.
Description of drawings
Fig. 1 is the system architecture schematic diagram of the method for according to an embodiment of the invention wireless device pairing;
Fig. 2-1 is the flow chart of the method for according to an embodiment of the invention wireless device pairing;
Fig. 2-2 is the flow chart of the method for according to an embodiment of the invention wireless device pairing;
Fig. 3-1 is the operation workflow figure of first wireless device of the method for according to another embodiment of the present invention wireless device pairing;
Fig. 3-2 is the operation workflow figure of first wireless device of the method for according to another embodiment of the present invention wireless device pairing;
Fig. 4 is the operation workflow figure of second wireless device of the method for according to another embodiment of the present invention wireless device pairing;
Fig. 5 is the local operation workflow figure of first wireless device of the method for according to another embodiment of the present invention wireless device pairing;
Fig. 6 is the system architecture schematic diagram of the method for a plurality of according to another embodiment of the present invention wireless device pairings.
Wherein, description of reference numerals is as follows:
1,1a: wireless device system;
10,12,14,20: wireless device;
102,122,142,202: transceiver;
104,124,144: the pairing button;
S202～S220: flow chart step;
S302～S320: flow chart step;
S400～S416: flow chart step;
S502～S514: flow chart step.
Embodiment
In order fully to understand the present invention, in hereinafter will exemplifying embodiment and cooperate accompanying drawing to elaborate, and it is not to limit the present invention.
(method of the wireless device pairing of the present invention's one example embodiment)
See also Fig. 1, Fig. 1 is the configuration diagram of wireless device system according to an embodiment of the invention.As shown in Figure 1, wireless device system 1 comprises wireless device 20 and wireless device 10, wherein wireless device 20 has transceiver 202, and wireless device 10 has transceiver 102 and pairing button 104, the transceiver 102 in the transceiver 202 in the wireless device 20 and the wireless device 10 by Radio Transmission Technology with mutual signal transmission.At this, that a host computer and wireless device 10 are Wireless Keyboards although Fig. 1 is wireless device 20, but in fact wireless device 20 also can be pen electricity, mobile phone, panel computer or other suitable arithmetic facilities, and wireless device 10 also can be wireless mouse, wireless headset, wireless speakers, printer or other suitable wireless devices, and the present invention is not as limit.
It should be noted that, in other embodiments, wireless device 20 more can and a plurality of wireless device 10 between set up pairing and lead to relation, make each wireless device 10 come to carry out radio communication with wireless device 20 with each data address in the less radio-frequency respectively, and for convenience of description, the method of the wireless device of the present embodiment pairing is to set up the relation of leading to between single wireless device 20 and single the wireless device 10, and the example that matches as wireless device describes.The illustrated wireless device system architecture of the present embodiment is signal only, is not limited to shown in Figure 1.
In addition, be built in the wireless device 20 in the transceiver 202 though Fig. 1 has illustrated, but in fact transceiver 202 more can be a kind of circumscribed wireless transceiver (dongle), and the wireless transceiver of described circumscribed can be coupled to wireless device 20 by the USB on the wireless device 20 (USB) or other transmission interfaces.Similarly, Fig. 1 is built in the wireless device 10 in the transceiver 102, but in fact transceiver 102 can be a kind of circumscribed wireless transceiver that is plugged on the wireless device 10 equally.That is to say, as long as transceiver 202 and transceiver 102 be signal transmission wirelessly, the present invention do not limit setting position, the coupling mode of transceiver 202 and transceiver 102 or whether be exposed to wireless device 20 or wireless device 10 outside the surface, can optionally freely design in affiliated technical field technical staff.
Please continue referring to Fig. 1, pairing button 104 is arranged on the wireless device 10, provides the user by operating pairing button 104 with the action of control wireless device 10.Particularly, when the user presses pairing button 104, can control wireless device 10 corresponding generation the first pairing signals, and described the first pairing signal is sent out by transceiver 102.Certainly, the present invention does not limit the type of pairing button 104, the button 104 that for example matches can be button, knob, driving lever, touch control device or other suitable structures, as long as the user can by operation pairing button 104 directly or indirectly to send the first pairing signal, can optionally freely design pairing button 104 in affiliated technical field technical staff.
From the angle of practical operation, please in the lump referring to Fig. 1 and Fig. 2-1 and Fig. 2-2, Fig. 2-1 and Fig. 2-2 are the flow chart according to the method for the wireless device pairing of one embodiment of the invention.As shown in the figure, when user's wish pairing wireless device 20 and wireless device 10, at first to press the pairing button 104 on the wireless device 10, and trigger wireless device 20 by the first pairing signal that wireless device 10 produces.
That is to say, the present invention will judge at first whether wireless device 10 is triggered in step S202, when pairing button 104 is pressed, and corresponding first pairing signals that produce of transceiver 102.If the determination result is NO for step S202, then the pairing button 104 of wireless device 10 is not pressed, and just can carry out subsequent pairing flow process afterwards until pairing button 104 is subject to pressing.Therefore, the user can be at any time pairing button 104 and wireless device 20 pairings by wireless device 10.
If the judged result of step S202 is yes, then carry out step S204, so that the transceiver 102 in the wireless device 10 with a default pairing address, is set up the pairing transmission channel, and via matching transmission channel with one first radio frequency transmission intensity, transmit the first pairing signal to transceiver 202.
On practice, described transmission channel is the predeterminated frequency scope in the less radio-frequency, and can be by being attached to the sign (for example being attached to the sign of bag header) of wrapping in same transmission channel, to be distinguished into a plurality of data addresses that are used for transmission of data signals (for example when bag has a specific sign, represent described bag and transmit by one of them data address).For instance, suppose that transmission channel has 6 data addresses that can be used to transmission of data signals, selected one of them data address of the method for wireless device pairing of the present invention is to be used for specially matching wireless device, and described chosen data address is described pairing address, and 5 remaining data addresses will be used for transmission of data signals specially.In addition, the first radio frequency transmission intensity can for example be the radio frequency transmission intensity of transceiver 102, and namely transceiver 102 is exported the first pairing signal with transmitting power, and this first pairing signal should be the pairing request signal.
Then, in step S206, when the transceiver 102 in the wireless device 10 transmitted the first pairing signal to transceiver 202 with the first radio frequency transmission intensity and pairing transmission channel, wireless device 20 judged whether transceiver 202 receives the first pairing signal.If the determination result is NO for step S206, then wireless device 20 can continue to wait for, just can carry out subsequent pairing flow process until be subject to the triggering of the first pairing signal.If the judged result of step S206 is yes, then wireless device 20 control transceivers 202 transmit the first response signal to transceiver 102 immediately with the pairing transmission channel.
After wireless device 20 receives the first pairing signal really, in step S208, wireless device 20 is opened a pairing mode, wireless device 20 will be ready for one and be replied bag, reply and comprise the first mailing address, and will reply the first-in first-out register (First-in-First-out, FIFO) that bag is inserted wireless device 20, and wireless device 20 is set as the second radio frequency transmission intensity.A plurality of in described the first mailing address indication transmission channel can be used to one of them of data address of transmission of data signals.In addition, the second radio frequency transmission intensity can for example be the radio frequency transmission intensity of transceiver 202, and namely transceiver 202 is exported the first response signal, the second response signal or data-signal with transmitting power.
On practice, in step S208, wireless device 20 judges first whether a plurality of data addresses default or random selection are unoccupied, if a plurality of data addresses default or that select at random are all unoccupied, then wireless device 20 can be chosen one of them wantonly as the first mailing address from a plurality of data addresses default or that select at random.Otherwise if wireless device 20 judges that a plurality of data addresses default or random selection are existing some occupied, then wireless device 20 can select one of them as the first mailing address from unappropriated data address.
It should be noted that transceiver 102 receives after the first response signal really, in fact wireless device 10 can wait for a period of time, and waits for that perhaps the user touches the pairing button 104 of wireless device 10 again, just can proceed step S210.For instance, wireless device 20 can light an indicator light on the wireless device 20 after sending the first response signal, touches again pairing button 104 in the wireless device 10 in order to indicate the user.
After if the transceiver 102 of wireless device 10 receives the first response signal, in step S210, judge then whether wireless device 10 is triggered again, when the pairing button 104 of wireless device 10 is pressed again, and trigger transceiver 102 corresponding first pairing signals that produce.If the determination result is NO for step S210, then the pairing button 104 of wireless device 10 is not pressed, and just can carry out subsequent pairing flow process afterwards until pairing button 104 is subject to pressing.
So, when the user presses pairing button 104 in the wireless device 10 again, wireless device 10 just can enter pairing mode with wireless device 20, therefore, when the pairing button 104 in for the first time false touch of the user wireless device 10, wireless device 10 can be replied original preset data address with the pairing address, to prevent wireless device 10 and wireless device 20 broken strings.In addition, the preset data address for example is the wireless device 10 and wireless device 20 employed the first mailing addresses of finishing pairing; Or wireless device 10 factory settings and not with the data address of other wireless devices pairing.
If the judged result of step S210 is yes, then carry out step S212, so that the transceiver 102 in the wireless device 10 transmits the first pairing signal to transceiver 202 with the first radio frequency transmission intensity and pairing transmission channel.
Then, in step S212, wireless device 10 can again be controlled transceiver 102 and repeat to launch the first pairing signal one time again.Certainly, as in step S204, step S212 sends the first pairing signal to the transceiver 202 of wireless device 20 with identical pairing transmission channel.In other words, in fact wireless device 10 has carried out the flow process of twice emitting the first pairing signal, in previous flow process (step S204), the first pairing signal of wireless device 10 emissions is mainly used to trigger and starts wireless device 20, and wireless device 20 is switched among the pairing mode.For instance, the pairing mode of wireless device 20 has comprised provides the first mailing address, and the intensity (such as minimum emissive power) of setting transmission the second response signal, certainly the present invention is not as limit, also can comprise suitable actions such as lighting the pairing indicator light such as the pairing mode of wireless device 20, but after affiliated technical field technical staff's self-defining starts pairing mode the element of respective action.
After wireless device 10 was launched the first pairing signal again, in step S214, wireless device 20 can judge whether to receive again the first pairing signal of emission, and if not, then wireless device 20 can continue to wait for that wireless device 10 provides the first pairing signal.If wireless device 20 has received again the first pairing signal of emission, then wireless device 20 can be proceeded step S214.
Then, in step S214, wireless device 20 judges whether transceiver 202 receives the first pairing signal.If the determination result is NO for step S214, then wireless device 20 can continue to wait for, just can carry out subsequent pairing flow process until be subject to the triggering of the first pairing signal.If the judged result of step S214 is yes, then wireless device 20 control transceivers 202 transmit the second response signal to transceiver 102 immediately with the second radio frequency transmission intensity and pairing transmission channel, and the difference of the first response signal among described the second response signal and the above-mentioned steps S206 is: the second response signal indication wireless device 10 is set up the first mailing address of pairing with wireless device 20.
On practice, wireless device 20 can select one of them to set up the first rear mailing address of pairing as wireless device 10 and wireless device 20 from transmission channel in a plurality of unappropriated data addresses, and this first mailing address inserted in the first-in first-out register of transceiver 202, wait for when wireless device 20 receives the first pairing signal again, the first-in first-out register of transceiver 202 transmits the second response signal comprises tool the first mailing address to transceiver 102, the second response signals of wireless device 10 answer bag immediately.
In step S216, wireless device 20 is namely thought and the link that has established wireless device 10 is stored according to this first mailing address (for example confirming the data address that wireless device 10 can be used) (for example flash memory or other suitable storage elements) in the memory of wireless device 20.Simultaneously, more can be as described in the step S216, wireless device 20 can switch to data-transmission mode from pairing mode, for instance, the data-transmission mode of wireless device 20 comprises sets the intensity (recalling to maximum transmission power or normal transmitting power) that sends ensuing data-signal, and the present invention is not as limit certainly.
In step S218, judge whether wireless device 10 receives the second response signal, if wireless device 10 receives after the second response signal really, just then can proceed step S220.On practice, wireless device 10 is received the second response signal of wireless device 20, and then wireless device 10 can receive that also wireless device 20 before inserted the answer bag of first-in first-out register.Wireless device 10 can take out the first mailing address by replying bag, and stores the first mailing address, and sets up one first transmission channel with the first mailing address.
Thus, the pairing flow process of wireless device 12 and wireless device 10 is and finishes.At last, in step S220, after wireless device 10 has received the second response signal, can learn wireless device 20 selected the first mailing addresses, can learn that also wireless device 20 has been ready to carry out the transmission of data-signal.Therefore, wireless device 10 equally also can be set the intensity (recalling to maximum transmission power or normal transmitting power) that sends data-signal, and wireless device 10 just can carry out the transmission of data-signal from described data address and wireless device 20 by this.
(method of the wireless device pairing of another example embodiment of the present invention)
For the method that makes wireless device of the present invention pairing is clearer, the present embodiment describes respectively the steps flow chart of wireless device 20 and wireless device 10 in detail at this.Please in the lump referring to Fig. 1, Fig. 3-1, Fig. 3-2 and Fig. 4, Fig. 3-1 and Fig. 3-2 are the operating procedure flow chart of according to another embodiment of the present invention wireless device 20, and Fig. 4 is the operating procedure flow chart of according to another embodiment of the present invention wireless device 10.
In the operation of reality, wireless device 10 is in dormancy or holding state.When the user presses the pairing button 104 of wireless device 10, wireless device 10 will judge whether to be triggered (such as the step S302 of Fig. 3-1), and the pairing button 104 of wireless device 10 is pressed and trigger transceiver 102 corresponding first pairing signals that produce.Then, transceiver 102 in the wireless device 10 is with default pairing address, set up the pairing transmission channel, and via matching transmission channel with the first radio frequency transmission intensity, transmit the first pairing signal to transceiver 102, and the first radio frequency transmission intensity is the minimum radio frequency transmission intensity (such as step S304) of wireless device 10.
Then, wireless device 10 can be waited for and interrupt signal (such as step S306).On practice, transceiver 102 has RF chip in the wireless device 10, and when transceiver 202 transmitted the first response signal to transceiver 102, the RF chip of transceiver 102 received the first response signal and namely can produce one after the RF chip inter-process and interrupts signal.When described interrupt signal and received by wireless device 10 after, wireless device 10 just can carry out the judgement of step S314.
For example, when transceiver 202 receive transceiver 102 when transmitting the first pairing signal, transceiver 202 will transmit the first response signal immediately notifies transceiver 102, makes transceiver 102 learn that transceiver 202 has received the first pairing signal.When transceiver 102 receives the first response signal that transceiver 202 transmits, described interrupt signal and received by wireless device 10 after, wireless device 10 just can carry out the judgement of step S314.In step S314, wireless device 10 judges whether signal is the answer bag of tool the first mailing address, if the result of the judgement of step S314 is no, wireless device 10 can enter step S312, wireless device 10 be set as the 3rd radio frequency transmission intensity and etc. button 104 to be paired again be pressed.
If wherein wireless device 10 is judged when transceivers 102 do not receive the first response signal that transceiver 202 transmits, the transceiver 102 of wireless device 10 can carry out the internal process of step S308 and step S310, and wireless device 10 control transceivers 102 transmit the first pairing signal again.
Specifically, wireless device 10 judges whether the number of times of transceiver 102 transmission the first pairing signal reaches the retry higher limit.If the determination result is NO in step S308, i.e. when the number of times of transceiver 102 transmission the first pairing signal did not reach the retry higher limit, then transceiver 102 transmitted the first pairing signal again to wireless device 10.If the judged result in step S308 is yes, then carry out step S310.When the number of times of transceiver 102 signal transmissions reached the retry higher limit, then transceiver 102 suspended transmission the first pairing signal to wireless device 10.
If in step S310, wireless device 10 judges whether transceiver 102 suspends transmission the first pairing signal, if the determination result is NO in step S310, then returns back to step S306, and wireless device 10 continues to wait for the described signal that interrupts.If the judged result in step S310 is yes, then transceiver 102 suspends transmission the first pairing signal to transceiver 202, and carries out step S312.As in step S312, the transceiver 102 in the wireless device 10 is set as the 3rd radio frequency transmission intensity, and the 3rd radio frequency transmission intensity is the maximum radio frequency intensity transmission of wireless device 10.
On practice, in step S312, it be a preset data address that wireless device 10 also can be replied the pairing address, and wireless device 10 waits for and being triggered, and wherein the preset data address is one of them of a plurality of data addresses in the transmission channel.Therefore, as the wireless device 10 of finishing pairing is when carrying out transfer of data with wireless device 20, pairing button 104 in user's false touch wireless device 10, to not cause wireless device 10 and wireless device 20 broken strings, wireless device 10 can carry out transfer of data with wireless device 20 with the preset data address.In addition, the preset data address for example is the wireless device 10 and wireless device 20 employed the first mailing addresses of finishing pairing; Or dispatch from the factory not data address with other wireless devices pairings of wireless device 10.
It is worth mentioning that, the difference of step S308 and step S310 is, when wireless device 10 carries out step S308, then the number of times of transceiver 102 signal transmissions not necessarily reaches the retry higher limit, and wireless device 10 must be judged the number of times of transceivers 102 signal transmissions.When wireless device 10 carries out step S310, then the number of times of transceiver 102 signal transmissions has reached the retry higher limit, and wireless device 10 judges whether transceiver 102 suspends signal transmission, is yes such as the judged result of step S310, and then wireless device 10 suspends signal transmissions.
When the transceiver 202 in the wireless device 20 did not receive the first pairing signal, wireless device 20 was waited for and is interrupted signal (such as step S400), after the transceiver 202 in the wireless device 20 receives the first pairing signal, namely carries out step S402.On practice, transceiver 202 has RF chip in the wireless device 20, and when transceiver 102 transmitted the first pairing signal to transceiver 202, the RF chip of transceiver 202 received the first pairing signal and namely can produce one after the RF chip inter-process and interrupts signal.When described interrupt signal and received by wireless device 20 after, wireless device 20 just can carry out the judgement of step S402.
If the determination result is NO for step S402, then wireless device 20 continues to wait for and interrupts signal (such as step S400) from wireless device 10.If wireless device 20 is judged transceiver 102 complete the first pairing signals (such as step S402) that receive, then wireless device 20 judges whether the first pairing signal is pairing request signal (such as step S404).Then, if wireless device 20 judges that whether the first pairing signal is from the pairing address (such as step S406) in the pairing transmission channel; If the determination result is NO for step S406, then wireless device 20 judges more whether signal is data-signal (such as step S414).
If wireless device 20 judges that signal is not from the pairing address in the transmission channel, then wireless device 20 judges that the signal that receives is produced by misoperation, interrupts signal (such as step S400) therefore can again continue wait; If wireless device 20 is judged signal from the pairing address in the transmission channel, then wireless device 20 judges whether pairing mode is to open (such as step S408).
It is worth mentioning that, the pairing mode original start of the wireless device 20 in the present embodiment is for closing.When transceiver 102 transmission the first pairing signal to transceiver 102, wireless device 20 is opened pairing modes, wireless device 20 switches to unlatching (such as step S410) with pairing mode; When transceiver 102 transmits the first pairing signal again to transceiver 102, then wireless device 20 will enter pairing mode, wireless device 20 switches to pairing mode and closes (such as step S412), and namely the pairing mode of wireless device 20 will be replied and is original start.The pairing mode original start of the wireless device 20 in the present embodiment only for signal, is not limited to shown in Figure 4.
The pairing mode original start of assumed wireless device 20 is for closing, and then the determination result is NO in step S408.In step S410, wireless device 20 is opened pairing mode, makes pairing mode switch to unlatching.Wireless device 20 will be ready for one and be replied bag, reply to comprise the first mailing address, and will reply the first-in first-out register that bag is inserted wireless device 20.In addition, it is the second radio frequency transmission intensity that wireless device 20 is set transceiver 202, and the second radio frequency transmission intensity is the minimum radio frequency transmission intensity of wireless device 20.
At this, described the second radio frequency transmission intensity can for example be the minimum radio frequency transmission intensity of transceiver 202, and namely transceiver 202 is exported the second response signal with the transmitting power of minimum.That is to say, only transceiver 102 is positioned at 202 1 predeterminable ranges of transceiver, and when the user pressed pairing button 104 on the wireless device 10, the first pairing signal that transceiver 102 is exported just can be received by the transceiver 202 in the wireless device 20.When if the distance between transceiver 102 and the transceiver 202 has surpassed described predeterminable range, just transceiver 102 and transceiver 202 signal transmission effectively, so that the flow process that wireless device 20 and wireless device 10 can't match.Angle with the reality use, if in a space, have a plurality of wireless devices 20 (such as host computer), and when the transceiver 102 of each is not exported the first pairing signal with the transmitting power of minimum, will make wireless device 10 (such as Wireless Keyboard) be paired to simultaneously a plurality of wireless device 20 (such as host computer), obviously be not best occupation mode.
On practice, the power of the first radio frequency transmission intensity affects the distance between transceiver 202 and the transceiver 102, and the first powerful radio frequency transmission intensity can make transceiver 202 in the signal that sends than distance reception transceiver 102.Hence one can see that, and when transceiver 102 was set as minimum radio frequency transmission intensity, transceiver 102 can match with transceiver 202 in relatively short distance, can avoid and other wireless device generation misoperations.In other words, when transceiver 202 and transceiver 102 are exported the first pairing signal and the second response signal with the transmitting power of minimum respectively, only immediate two flow processs that wireless device just might match, thus, the present invention just can realize man-to-man wireless pairing in a particular space.
For instance, transceiver 202 for example is the rf receiver and transmitter that is plugged on the USB (USB) of wireless device 20.When the transceiver 102 of wireless device 10 is positioned at transceiver 202 approximately during 40 centimeters distance, then make wireless device 10 can effectively the first pairing signal be transferred to the transceiver 202 of wireless device 20.When the transceiver 202 of wireless device 20 receives the first pairing signal, then wireless device 20 can be first be minimum with the transmission power setting of transceiver 202, make wireless device 20 effectively the second response signal be transferred to transceiver 102.The minimum emissive power that note that transceiver 202 and transceiver 102 may not be identical, and for example transceiver 202 can make the transceiver 102 in 40 centimeters effectively receive signal, and transceiver 102 can make the transceiver 202 in 30 centimeters effectively receive signal.
When the user presses the pairing button 104 of wireless device 10 again, wireless device 10 will judge whether again to be triggered (such as step S302), and the pairing button 104 of wireless device 10 is pressed again and trigger transceiver 102 corresponding first pairing signals that produce.Then, the transceiver 102 in the wireless device 10 transmits the first pairing signal and be given to transceiver 202, and the first radio frequency transmission intensity is the minimum radio frequency transmission intensity (such as step S304) of wireless device 10 with the first radio frequency transmission intensity and pairing transmission channel.
After transceiver 102 transmission the first pairing signal was to the transceiver 202 in the wireless device 20, then wireless device 20 carried out step S400 to the program of step S408, and the flow process of step S400 and step S408 is at this and repeat no more.Wherein when wireless device 20 carried out the judgement of step S408, if in step S408, wireless device 20 judged that pairing mode for opening, then carries out step S412.In step S412, wireless device 20 enters pairing mode, and wireless device 20 switches to pairing mode and closes.Wireless device 20 stores the first mailing address to memory, and setting transceiver 202 is the 4th radio frequency transmission intensity, and the 4th radio frequency transmission intensity is the maximum radio frequency intensity transmission of wireless device 20.Afterwards, wireless device 20 leaves pairing mode.
It should be noted that, after the transceiver 202 of wireless device 20 receives the first pairing signal that the transceiver 102 of wireless device 10 transmits, transceiver 202 transmits the second response signal to the transceiver 102 in the wireless device 10 immediately with the pairing transmission channel, if wireless device 10 is received the second response signal of wireless device 20, then wireless device 10 can receive that also wireless device 20 before inserted the answer bag of first-in first-out register.Wireless device 10 can take out the first mailing address by replying bag, and stores the first mailing address, and sets up one first transmission channel with the first mailing address.
Specifically, if wireless device 10 judges that transceiver 102 receives the second response signal that transceiver 202 transmits immediately, after then wireless device 10 received and interrupts signal, wireless device 10 can carry out the judgement of step S314.In step S314, judge that wireless device 10 receives whether signal is the answer bag of tool the first mailing address, if the judged result of step S314 is yes, then carries out step S316.In step S316, judge whether to obtain the first mailing address, assumed wireless device 10 receives the second response signal, and certainly reply bag and obtain the first mailing address, in step S318, then wireless device 10 is set up the first transmission channel with the first mailing address, and the first mailing address is deposited memory.At this moment, it is the 3rd radio frequency transmission intensity that wireless device 10 is set transceiver 102, and the 3rd radio frequency transmission intensity is the maximum radio frequency intensity transmission of wireless device 10.
Wherein wireless device 10 judges that transceiver 102 does not receive the second response signal that transceiver 202 transmits, then wireless device 10 can carry out the flow process that step S308 and step S310 transmit the first pairing signal again, and the flow process of step S308 and step S310 is at this and repeat no more.
Therefore, in step S320, wireless device 20 enters normal manipulation mode with wireless device 10, and then wireless device 20 is finished pairing with wireless device 10, and carries out the bi-directional transfer of data signal.Wireless device 20 with the 4th radio frequency transmission intensity and the first transmission channel data signal to wireless device 10.
It is worth mentioning that, transceiver 102 is with the 3rd radio frequency transmission intensity and the first transmission channel data signal transceiver 202 to wireless device 20, wireless device 20 carries out step S400 to the program of step S404, assumed wireless device 20 is judged when not being the pairing request signal (such as step S404), then carry out step S414, wireless device 20 determines whether data-signal.Be yes such as step S404 judged result, then to carry out transfer of data (step S416) in the first transmission channel; The determination result is NO such as step S404, then returns back to step S400, and wireless device 20 continues wait and interrupts signal.
(method of the wireless device pairing of another example embodiment of the present invention)
For the method that makes wireless device of the present invention pairing is clearer, the present embodiment describes another steps flow chart of wireless device 20 and wireless device 10 in detail at this.Please in the lump referring to Fig. 1, Fig. 3-1, Fig. 3-2 and Fig. 5, Fig. 5 is the local operation workflow figure of the method for wireless device pairing according to another embodiment of the present invention.The operation workflow difference of wireless device 10 is among Fig. 5 and Fig. 3-1 and Fig. 3-2: the pairing button 104 of wireless device 10 is pressed once among Fig. 5, and the transceiver 102 of wireless device 10 namely sends secondary the first pairing signal, with the pairing button 104 of wireless device 10 among above-described embodiment Fig. 3-1 and Fig. 3-2 secondary that is pressed, and the corresponding steps flow chart that produces the first pairing signal difference to some extent.
Specifically, when user's wish pairing wireless device 20 and wireless device 10, at first to press the pairing button 104 on the wireless device 10, and trigger wireless device 20 by the first pairing signal that wireless device 10 produces.That is to say, the present invention will judge at first whether wireless device 10 is triggered in step S502, when pairing button 104 is pressed, and corresponding first pairing signals that produce of transceiver 102.So that the transceiver 102 in the wireless device 10 transmits the first pairing signal to transceiver 202 (such as step S504) with the first radio frequency transmission intensity and pairing transmission channel.
Then, wireless device 10 enters wait and interrupts signal (such as step S506).And wireless device 20 judges whether transceiver 202 receives the first pairing signal.If then wireless device 20 control transceivers 202 transmit the first response signal to transceiver 102 immediately with the pairing transmission channel.After transceiver 102 receives the first response signal really, then transceiver 102 also can produce and interrupt signal, transceiver 102 namely enters step S508 after receiving and interrupting signal, judge that wireless device 10 receives whether signal is the answer bag of tool the first mailing address, the first response signal of for the first time transmission of wireless device 20 answer bag of tool the first mailing address not wherein, so wireless device 10 enters step S510, judge whether wireless device 10 receives is the first response signal.
When wireless device 10 judgements were received as the first response signal, wireless device 10 control transceivers 102 were triggered and corresponding first pairing signal that produces automatically again.Make wireless device 10 again transmit the first pairing signal to transceiver 202 (such as step S504) with the first radio frequency transmission intensity and a pairing transmission channel.In addition, when wireless device 10 judges that reception is not the first response signal, then enter step S512, wireless device 10 is set as the 3rd radio frequency transmission intensity.Wireless device 10 will match the address and reply and to be the preset data address.
On practice, after transceiver 102 for example was designed to receive the first response signal, transceiver 102 namely produced the first pairing signal automatically again, and transmitted the first pairing signal to the transceiver 202 in the wireless device 20; Or after the pairing button 104 of wireless device 10 is pressed, be corresponding primary the first pairing signal of generation and secondary the first pairing signal, and be transferred to again wireless device 20 behind secondary the first pairing signal and primary the first pairing signal certain interval of time.After the pairing button 104 that the present invention does not limit wireless device 10 was pressed, transceiver 102 corresponding mode and the number of times that produce the first pairing signals can optionally freely design in affiliated technical field technical staff.
Then, when transceiver 102 produces the first pairing signal automatically again, and transmit the first pairing signal to the transceiver 202 of wireless device 20.If the transceiver in the wireless device 20 202 receives the first pairing signal, wireless device 20 transmits the second response signal to the transceiver 102 of wireless device 10 with the second radio frequency transmission intensity and pairing transmission channel.When transceiver 102 confirms to receive the second response signal, transceiver 102 namely carries out the judgement of step S508, if it is the answer bag of tool the first mailing address that wireless device 10 receives signal, then enter step S514, wireless device 10 is obtained the first mailing address, and set up the first transmission channel with the first mailing address, wireless device 10 and wireless device 20 are by the first transmission channel data signal.
(method of the wireless device pairing of another example embodiment of the present invention)
For the method that makes wireless device of the present invention pairing is clearer, the present embodiment describes wireless device 20 and a plurality of wireless devices 10,12,14 steps flow chart in detail at this.See also Fig. 6, Fig. 6 is the system architecture schematic diagram of the method for a plurality of according to another embodiment of the present invention wireless devices 10,12,14,20 pairings.The 1a of wireless device system comprises wireless device 20 and wireless device 10,12,14, and wireless device 10,12,14 respectively have transceiver 102,122,142 with match button 104,124,144.
As described in the above embodiment of the present invention, after wireless device 20 and wireless device 10 pairings are finished, and wireless device 20 more can match with wireless device 12,14. Wireless device 12,14 for example includes but not limited to wireless mouse, wireless headset, wireless speakers, printer or other suitable wireless devices, and the present invention is not as limit.When wireless device 12 and wireless device 20 match, judge whether wireless device 12 is triggered, if, then wireless device 12 is with default pairing address, set up the pairing transmission channel, and via matching transmission channel with one the 5th radio frequency transmission intensity, transmit the second pairing signal to wireless device 20.
Judge whether wireless device 20 receives the second pairing signal, if, then wireless device 20 transmits the first response signal to wireless device 12 with the pairing transmission channel, wireless device 20 is opened pairing mode, and the second communication address is deposited in the second first-in first-out register of wireless device 20, and wireless device 20 is set the second radio frequency transmission intensity.
Judge whether wireless device 12 is triggered again, if then wireless device 12 transmits the second pairing signal to wireless device 20 with the 5th radio frequency transmission intensity and pairing transmission channel.Wherein the 5th radio frequency transmission intensity is the minimum radio frequency transmission intensity of wireless device 12.
Judge whether wireless device 20 receives the second pairing signal again, if, then wireless device 20 transmits the second response signal to wireless device 12 with the second radio frequency transmission intensity and pairing transmission channel, wireless device 20 enters pairing mode, to be ready for one and reply bag, answer comprises the second communication address, and will reply the first-in first-out register that bag is inserted wireless device 20.
If wireless device 12 is received the second response signal of wireless device 20, then wireless device 12 can receive that also wireless device 20 before inserted the answer bag of first-in first-out register.Wireless device 12 can take out the second communication address by replying bag, and stores the second communication address, and sets up one second transmission channel with the second communication address.Therefore, wireless device 12 carries out transfer of data with wireless device 20 by the second transmission channel.
In the same manner, wireless device 14 matches with wireless device 20, wireless device 20 can be selected third communication address, and notifies wireless device 14 usefulness third communication addresses to set up the 3rd transmission channel, and wireless device 14 carries out transfer of data with wireless device 20 by the 3rd transmission channel.The method of wireless device pairing of the present invention goes for 20 pairs of a plurality of wireless devices 10 of single wireless device, 12,14, and select and determine and each wireless device 10,12,14 mailing addresses that match by single wireless device 20, for example be the first mailing address, second communication address or third communication address.
It is worth mentioning that, when wireless device 10 and wireless device 20 match, select and determine mailing address by wireless device 20.After wireless device 10 takies the first mailing address, when wireless device 20 matches with wireless device 12, wireless device 20 can not selected occupied data address (such as the first mailing address), mailing address be selected and be determined to wireless device 20 can from unappropriated data address (such as second communication address, third communication address or four-way letter address etc.), therefore wireless device 12 takies the second communication address, and wireless device 14 takies third communication address.
For example, main frame can match with Wireless Keyboard, the first wireless mouse, the second wireless mouse.When main frame and Wireless Keyboard matched, Selection of chiller also determined to use the first mailing address, comes to carry out bidirectional data transfers with Wireless Keyboard.Therefore use the first mailing address to set up the first transmission channel between main frame and the Wireless Keyboard, carry out bidirectional data transfers.In the same manner, Selection of chiller also determines to use the second communication address to set up the second transmission channel, come to carry out bidirectional data transfers with the first wireless mouse, Selection of chiller also determines to use third communication address to set up the 3rd transmission channel, comes to carry out bidirectional data transfers with the second wireless mouse.
In sum, the method of a kind of wireless device pairing of effective supply of the present invention, the present invention does not drive wireless device by application program, the user can press the pairing button of first wireless device at any time, make first wireless device with the first radio frequency transmission intensity and pairing transmission channel, mailing address is selected and determined to the transmission pairing signal to second wireless device by second wireless device.Again press the corresponding generation pairing signal of pairing button of first wireless device as the user; Or by the first wireless device internal wafer automatically control come again triggering for generating pairing signal, and obtain mailing address from the response signal of second wireless device transmission, increasing between the wireless device by the method can be at any time and the Rapid Establishment pairing chance of leading to.
Although preferred embodiment of the present invention has disclosed as above; right the present invention is not limited to above-described embodiment; technical staff in the technical field under any; within not breaking away from disclosed scope; when can doing a little change and adjustment, thus protection scope of the present invention should with the appended claim scope of applying for a patent the person of being defined be as the criterion.
Claims (11)
1. the method for a wireless device pairing is characterized in that, the method comprises the following steps:
Judge whether a first wireless device is triggered, if then this first wireless device is set up a pairing transmission channel with a default pairing address, and via this pairing transmission channel with one first radio frequency transmission intensity, transmit one first pairing signal to a second wireless device;
Judge whether this second wireless device receives this first pairing signal, if, then this second wireless device transmits one first response signal to this first wireless device by this pairing transmission channel, this second wireless device is opened a pairing mode, and produce one first mailing address, this first mailing address is placed into a first-in first-out register of this second wireless device, and this second wireless device is set one second radio frequency transmission intensity;
Judge whether this first wireless device is triggered again, if then this first wireless device transmits this first pairing signal to this second wireless device with this first radio frequency transmission intensity and this pairing transmission channel; And
Judge whether this second wireless device receives this first pairing signal again, if, then this second wireless device transmits one second response signal to this first wireless device with this second radio frequency transmission intensity and this pairing transmission channel, this second wireless device stores this first mailing address, and leaves this pairing mode.
2. the method for wireless device pairing as claimed in claim 1 is characterized in that, this first radio frequency transmission intensity is the minimum radio frequency transmission intensity of this first wireless device, and this second radio frequency transmission intensity is the minimum radio frequency transmission intensity of this second wireless device.
3. the method for wireless device pairing as claimed in claim 1 is characterized in that, in judging the step whether this first wireless device is triggered, also comprises the following steps:
If this first wireless device does not receive this first response signal of this second wireless device, judge then whether the number of times that this first wireless device transmits this first pairing signal reaches a retry higher limit;
When the number of times that transmits this first pairing signal when this first wireless device did not reach this retry higher limit, then this first wireless device transmitted this first pairing signal again to this second wireless device; And
When the number of times that transmits this first pairing signal when this first wireless device reaches this retry higher limit, then this first wireless device suspends this first pairing signal of transmission to this second wireless device, it is a preset data address that this first wireless device also can be replied this pairing address, and this first wireless device waits for and being triggered, and wherein this preset data address is one of them of a plurality of data addresses in the transmission channel.
4. the method for wireless device pairing as claimed in claim 1 is characterized in that, in judging that whether this second wireless device receives in the step of this first pairing signal, also comprises the following steps:
This second wireless device is set up this pairing transmission channel in advance;
If this first wireless device is received this first response signal of this second wireless device, then should to match that the address replys be a preset data address to this first wireless device, and this first wireless device is waited for and again being triggered;
Judge whether this first pairing signal of complete reception of this second wireless device;
If this first pairing signal of the complete reception of this second wireless device judges then whether this first pairing signal transmits this pairing address in this pairing transmission channel;
Wherein when judging that this first pairing signal is this pairing address of transmitting in this pairing transmission channel, represent that then this second wireless device has received this first pairing signal; And
If this second wireless device has received this first pairing signal, will be ready for one and reply bag, this answer comprises this first mailing address, and will reply this first-in first-out register that bag is inserted this second wireless device.
5. the method for wireless device pairing as claimed in claim 1 is characterized in that, in judging that whether this second wireless device receives in the step of this first pairing signal again, also comprises the following steps:
If this first wireless device is received this second response signal of this second wireless device, then this first wireless device can receive that also this second wireless device before inserted this answer bag of this first-in first-out register; And
This first wireless device can be replied bag by this and be taken out this first mailing address, and stores this first mailing address, and sets up one first transmission channel with this first mailing address.
6. the method for wireless device as claimed in claim 1 pairing is characterized in that, this first mailing address is one of them of a plurality of data addresses in the transmission channel.
7. the method for wireless device as claimed in claim 1 pairing, it is characterized in that, after this first wireless device and this second wireless device are finished pairing, this first wireless device with one the 3rd radio frequency transmission intensity and this first mailing address data signal to this second wireless device, and this second wireless device with one the 4th radio frequency transmission intensity and this first mailing address data signal to this first wireless device, and the 3rd radio frequency transmission intensity is the maximum radio frequency intensity transmission of this first wireless device, and the 4th radio frequency transmission intensity is the maximum radio frequency intensity transmission of this second wireless device.
8. the method for wireless device as claimed in claim 1 pairing, it is characterized in that, this first wireless device has a pairing button, when this pairing button is pressed, this first wireless device is triggered and corresponding this first pairing signal that produces, and after this first wireless device received this first response signal, when this pairing button was pressed again, this first wireless device was triggered to produce this first pairing signal again.
9. the method for wireless device as claimed in claim 1 pairing, it is characterized in that, this first wireless device has a pairing button, when this pairing button is pressed, this first wireless device is triggered and corresponding this first pairing signal that produces, and after this first wireless device received this first response signal, this first wireless device was triggered to produce this first pairing signal automatically again.
10. the method for wireless device pairing as claimed in claim 1 is characterized in that, also comprises the following steps:
Judge whether one the 3rd wireless device is triggered, if then the 3rd wireless device is set up this pairing transmission channel with this default pairing address, and via this pairing transmission channel with one the 5th radio frequency transmission intensity, transmit one second pairing signal to this second wireless device;
Judge whether this second wireless device receives this second pairing signal, if, then this second wireless device transmits this first response signal to the 3rd wireless device by this pairing transmission channel, this second wireless device is opened this pairing mode, and produce a second communication address, this second communication address is placed into this first-in first-out register of this second wireless device, and this second wireless device is set this second radio frequency transmission intensity;
Judge whether the 3rd wireless device is triggered again, if then the 3rd wireless device transmits this second pairing signal to this second wireless device with the 5th radio frequency transmission intensity and this pairing transmission channel; And
Judge whether this second wireless device receives this second pairing signal again, if, then this second wireless device transmits this second response signal to the 3rd wireless device with this second radio frequency transmission intensity and this pairing transmission channel, this second wireless device stores this second communication address, and leaves this pairing mode.
11. the method for wireless device pairing as claimed in claim 10 is characterized in that the 5th radio frequency transmission intensity is the minimum radio frequency transmission intensity of the 3rd wireless device.
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| CN107132939A (en) * | 2016-02-26 | 2017-09-05 | 东莞宝德电子有限公司 | The matching method of wireless charging mouse |
| CN109548176A (en) * | 2018-12-04 | 2019-03-29 | 深圳市四海伽蓝电子科技有限公司 | A kind of wireless device pairing management method |
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| CN112217540A (en) * | 2019-07-11 | 2021-01-12 | 青岛鲁渝能源科技有限公司 | Communication system and method applied to wireless power transmission |
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| CN105554904A (en) * | 2014-10-22 | 2016-05-04 | 三星电子株式会社 | Pairing apparatus and method thereof |
| CN105554904B (en) * | 2014-10-22 | 2019-03-15 | 三星电子株式会社 | Contrast means and its method |
| CN107132939A (en) * | 2016-02-26 | 2017-09-05 | 东莞宝德电子有限公司 | The matching method of wireless charging mouse |
| CN107132939B (en) * | 2016-02-26 | 2020-07-24 | 东莞宝德电子有限公司 | Pairing method of wireless charging mouse |
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| CN112217540A (en) * | 2019-07-11 | 2021-01-12 | 青岛鲁渝能源科技有限公司 | Communication system and method applied to wireless power transmission |
| CN112217540B (en) * | 2019-07-11 | 2023-09-08 | 青岛鲁渝能源科技有限公司 | Communication system and method applied to wireless power transmission |
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