CN203645668U - Bluetooth device - Google Patents
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- CN203645668U CN203645668U CN201320886869.1U CN201320886869U CN203645668U CN 203645668 U CN203645668 U CN 203645668U CN 201320886869 U CN201320886869 U CN 201320886869U CN 203645668 U CN203645668 U CN 203645668U
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Abstract
The utility model discloses a Bluetooth device, which comprises a Bluetooth circuit, an NFC sensing circuit and a wireless charging and transmitting device, wherein the NFC sensing circuit outputs sensing signals when sensing an external NFC device approaches, one path of the sensing signals is transmitted to the Bluetooth circuit to control turn-on of the Bluetooth circuit, and another path of the sensing signals are transmitted to a first switching circuit through a time-delay circuit; the first switching circuit acts to control turn-on of the wireless charging and transmitting device when the sensing signal continuous output time reaches the delay time corresponding to the time-delay circuit. In allusion to the Bluetooth device disclosed by the utility model, users can adopts two different operating methods, that is, the NFC device is transiently contacted with the Bluetooth device or the NFC device is placed on the Bluetooth device for a long time, the Bluetooth device is controlled to open a Bluetooth function independently or automatically open a Bluetooth or wireless charging function, thereby meeting actual requirements of users in use. In addition, the Bluetooth device is enabled to be more energy-saving and more environment friendly through integrated solar power generation technologies.
Description
Technical field
The utility model belongs to Wireless Telecom Equipment technical field, specifically, relates to a kind of wireless communications products based on Bluetooth technology design.
Background technology
Bluetooth equipment is a kind of wireless communication electronics product that utilizes Bluetooth technology design, supports short-distance wireless communication, has short, the feature such as connective stability is strong time of delay, has been widely used at present in the electronic products such as mobile phone, earphone, vehicle-mounted sound box.
For some current bluetooth equipment, particularly vehicle-mounted Bluetooth equipment, such as vehicle-mounted Bluetooth acoustic enclosure etc., in order to be user-friendly to, simplify start operation, NFC technology is applied in bluetooth equipment, has realized a kind of and need, by outside NFC equipment near described bluetooth equipment, can control the function of bluetooth equipment Auto Power On.Describe as an example of vehicle-mounted Bluetooth acoustic enclosure example, in the time that user wants to play music in mobile phone or answering cell phone, without the switching on and shutting down button on manual operation Baffle Box of Bluetooth, only need support the mobile phone of NFC technology to contact with vehicle-mounted Bluetooth acoustic enclosure oneself, can control Baffle Box of Bluetooth Auto Power On, start Bluetooth chip and mobile phone and match, and after successful matching, receive by blue-tooth technology the blue-teeth data that mobile phone sends, play music or receive calls by Baffle Box of Bluetooth.Thus one, not only can be user-friendly to bluetooth equipment, but also can further promote the fail safe that driver drives.
In recent years, wireless charging technology was suggested and had obtained fast development, and this technology is without can be by delivery of electrical energy to power device by electric wire, for power device power supply or be that its inner battery charges.Be the mobile phone charging of oneself when driving in order to facilitate user, some vehicle-mounted Bluetooth equipment is applied to wireless charging technology wherein, utilizes vehicle-mounted Bluetooth equipment to carry out wireless charging to mobile phone.
For the bluetooth equipment that is integrated with at present NFC technology and wireless charging technology, in the time that user is placed on bluetooth equipment by mobile phone, bluetooth equipment is opened automatically, and in carrying out Bluetooth communication, charge function is opened in the lump.That is to say, two kinds of functions can not separately be carried out, and this only needs play music or received calls by bluetooth equipment for some, do not need, user that bluetooth equipment charges concerning its mobile phone, obviously can not meet its user demand.
Summary of the invention
The purpose of this utility model is to provide a kind of bluetooth equipment that can open separately Bluetooth function or open bluetooth and wireless charging function simultaneously, to meet better the user demand that user is different.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of bluetooth equipment, comprises Bluetooth circuit, NFC sensor circuit and wireless charging emitter; Described NFC sensor circuit is in the time sensing that outside has NFC equipment to approach, and output induced signal one tunnel transfers to Bluetooth circuit, controls Bluetooth circuit and opens, and the delay circuit of separately leading up to transfers to the first switching circuit; Described the first switching circuit moves in the time that induced signal continues the corresponding delay time of time arrival delay circuit of output, controls wireless charging emitter and opens.
Further, described the first switching circuit is connected in the wireless charging control loop of wireless charging emitter, in the time that described induced signal continues the corresponding delay time of time arrival delay circuit of output, connect the wireless charging control loop of wireless charging emitter, control wireless charging emitter to outside NFC equipment charge.
Further again, switch ways one end connected system power supply of described the first switching circuit, the other end connects the power supply terminal of wireless charging emitter, and the control end of the first switching circuit connects described delay circuit.
Preferably, be provided with a N-channel MOS pipe in described the first switching circuit, the grid of described N-channel MOS pipe connects delay circuit, drain electrode connected system power supply, and source electrode connects the power supply terminal of wireless charging emitter.
As a kind of preferred circuit teaming method of described delay circuit, in described delay circuit, be provided with a resistance and an electric capacity, described resistance directly connects or is connected between the induced signal output of NFC sensor circuit and the grid of N-channel MOS pipe by diode, and described electric capacity is connected between the grid and ground of N-channel MOS pipe.
In order to improve the stability of control, by the induced signal by the output of described NFC sensor circuit via second switch circuit transmission to described Bluetooth circuit, the control end of described second switch circuit connects the first switching circuit, in the time that the first switching circuit control wireless charging emitter is opened, trigger second switch circuit operation, cut off the connection line between Bluetooth circuit and NFC control circuit, guarantee Bluetooth circuit stable operation after startup, be no longer subject to the impact of NFC equipment.
As a kind of decision design mode of described second switch circuit, in described second switch circuit, be provided with a P channel MOS tube, the grid of described P channel MOS tube connects the first described switching circuit, and by pull down resistor ground connection, the source electrode of described P channel MOS tube connects the induced signal output of NFC sensor circuit, and drain electrode connects the test side of Bluetooth circuit.
Further; in described bluetooth equipment, be provided with battery; described battery is connected to the negative electrode of a diode; by the induced signal output of the anodic bonding NFC sensor circuit of diode; just the amplitude of the induced signal of NFC sensor circuit output can be limited in the amplitude of cell voltage thus; avoid the induced signal of exporting by NFC sensor circuit to cause the problem that Bluetooth chip damages to occur because amplitude is too high, play the effect of protection Bluetooth circuit.
In order to save the limited energy, the utility model is introduced solar energy generation technology in described bluetooth equipment,, on described bluetooth equipment, solar panel is set, described solar panel is preferably mounted at the upper surface of bluetooth equipment main body outside, converting the solar energy receiving to electric energy, is the circuit system power supply in bluetooth equipment.
Further, in described bluetooth equipment, be also provided with battery, the voltage of exporting by battery and the voltage exported by solar panel, via a gating element gating amplitude Gao mono-road Voltage-output, are formed to system power supply, are the circuit system power supply in bluetooth equipment.
Preferably, described gating element is the double diode device of the differential concatenation of a negative electrode docking, and two anodes of described double diode device connect one to one with battery and solar panel respectively, the described system power supply of negative electrode output.
Compared with prior art, advantage of the present utility model and good effect are: the utility model by arranging switching circuit and delay circuit in bluetooth equipment, utilize Bluetooth function and the wireless charging function timesharing of switching circuit and delay circuit control bluetooth equipment to open, user just can adopt NFC equipment short-time contact bluetooth equipment or be placed on for a long time the different operating mode on bluetooth equipment thus, control bluetooth equipment and open separately Bluetooth function or automatically open bluetooth and two functions of wireless charging, then meet the actual use needs of himself.In addition, by solar panel is installed on bluetooth equipment, can convert solar energy to electric energy, for the battery in bluetooth equipment charges or directly carries out wireless charging for outside NFC equipment, not only save the limited energy, and can make that bluetooth equipment is more green, environmental protection, energy-conservation.
Read by reference to the accompanying drawings after the detailed description of the utility model execution mode, other features of the present utility model and advantage will become clearer.
Accompanying drawing explanation
Fig. 1 is that bluetooth equipment of the present utility model is to realize Bluetooth function and a kind of circuit structure design theory diagram proposing is opened in wireless charging function timesharing;
Fig. 2 is the circuit theory diagrams of a specific embodiment of the block diagram of circuit structure shown in Fig. 1;
Fig. 3 is the integrated circuit configuration diagram of a specific embodiment of the bluetooth equipment that proposes of the utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in more detail.
The present embodiment is realized timesharing for the Bluetooth function to bluetooth equipment and wireless charging function and is opened and control, in existing bluetooth equipment, set up the first switching circuit and delay circuit, shown in Figure 1, the first switching circuit and delay circuit are connected between NFC sensor circuit and wireless charging emitter, unlatching sequential to wireless charging emitter is carried out time delay control, to realize the selectively unlocking to wireless charging function.Specifically, NFC sensor circuit sense outside have NFC equipment near or when contact, first the induced signal of NFC sensor circuit output is transferred to Bluetooth circuit, control Bluetooth circuit and open, with outside NFC device pairing, open Bluetooth function.During this period, the induced signal of exporting is transferred to delay circuit by NFC sensor circuit simultaneously.If outside NFC equipment is the close of short time or has contacted bluetooth equipment, owing to not arriving the corresponding delay time of delay circuit by the duration of NFC sensor circuit output induced signal, therefore, delay circuit can trigger switch circuit operation, keep the closed condition of wireless charging emitter, do not open the wireless charging function of bluetooth equipment.If outside NFC equipment contacts with described bluetooth equipment for a long time, be for example placed directly on bluetooth equipment, NFC sensor circuit can continue to export induced signal.If the duration of NFC sensor circuit output induced signal has arrived the corresponding delay time of delay circuit, delay circuit control the first switching circuit action, connect the wireless charging control loop of wireless charging emitter, the wireless charging emitter starting in bluetooth equipment brings into operation, and outside NFC equipment is carried out to wireless charging.Now, Bluetooth function and the wireless charging function of bluetooth equipment are all opened, and in being outside NFC equipment charge, can also realize the transmission of blue-teeth data.
By carry out foregoing circuit design in bluetooth equipment, user only needs the actual user demand according to oneself, takes different modes of operation, can control bluetooth equipment and automatically open required function.For example: if user uses NFC equipment to contact momently bluetooth equipment, what open is Bluetooth function; If user uses NFC equipment to contact for a long time bluetooth equipment, Bluetooth function and wireless charging function are all opened.
As a kind of preferred design of the present embodiment, preferably the first switching circuit is connected in the current supply circuit of wireless charging emitter, for example, be connected between the system power supply VSYS of bluetooth equipment inside and the power supply terminal of wireless charging emitter.When without startup wireless charging function, cut off the power supply input of wireless charging emitter, make wireless charging emitter power-off shutdown, avoid producing meaningless energy resource consumption; And in the time need to starting the wireless charging function of bluetooth equipment, by delay circuit control the first switching circuit action, connect the current supply circuit of wireless charging emitter, and make the operation that powers on of wireless charging emitter, outside NFC equipment is carried out to wireless charging.
In order to guarantee the stability to Bluetooth circuit control, the present embodiment is preferably set up another switching circuit between the induced signal output of NFC sensor circuit and Bluetooth circuit, it is second switch circuit, shown in Figure 1, power on after operation at wireless charging emitter, utilize the action of the first switching circuit, trigger second switch circuit operation, and then cut off the induced signal transmission line between Bluetooth circuit and NFC circuit, to guarantee Bluetooth circuit stable operation.In the present embodiment, the described second switch circuit of switch element design that preferably adopts low level conducting, high level to turn-off, receives by the switch controlling signal of the first switching circuit output.When the first switching circuit action, while connecting the current supply circuit of wireless charging emitter, system power supply VSYS is applied to the control end of second switch circuit simultaneously by the first switching circuit, and then the switch ways of controlling second switch circuit disconnects, make Bluetooth circuit no longer receive the induced signal of NFC sensor circuit output, keep stable operation.
As a kind of preferred circuit design of the present embodiment, preferably adopt a first described switching circuit of N-channel MOS pipe Q1 design, select a described second switch circuit of P channel MOS tube Q2 design, shown in Figure 2.The source electrode of P channel MOS tube Q2 is connected to the induced signal output of NFC sensor circuit, in order to guarantee the correct flow direction of signal in circuit, a diode D1 can also further connect between the source electrode of described P channel MOS tube Q2 and the induced signal output of NFC sensor circuit, when satisfaction induction signal normal transmission requires, avoid other signals in circuit to flow backward to NFC sensor circuit.The drain electrode of P channel MOS tube Q2 is connected to Bluetooth circuit, specifically can connect the test side of Bluetooth circuit, also further series diode D3 in this circuit certainly, to guarantee the correct flow direction of signal in circuit.The grid of P channel MOS tube Q2 is passed through to pull down resistor R3 ground connection, and connect the source electrode of described N-channel MOS pipe Q1, receive by the switch controlling signal of N-channel MOS pipe Q1 output.
The grid of described N-channel MOS pipe Q1 is connected to delay circuit, and in the present embodiment, described delay circuit preferably adopts a resistance R 2 and a capacitor C 2 to be formed by connecting, shown in Figure 2.Resistance R 2 is connected between the induced signal output induced signal output of NFC sensor circuit (or be connected to by described diode D1) and the grid of N-channel MOS pipe Q1 of NFC sensor circuit, capacitor C 2 is connected between the grid and ground of described N-channel MOS pipe Q1; The drain electrode connected system power supply VSYS of N-channel MOS pipe Q1, source electrode connects the power supply terminal of described wireless charging emitter.
In the time that NFC sensor circuit senses that outside has NFC equipment to approach, output induced signal transfers to Bluetooth circuit by source electrode, the drain electrode of P channel MOS tube Q2, and the Bluetooth chip of controlling in Bluetooth circuit is opened, and matches with outside NFC equipment.Now, the induced signal of exporting by NFC sensor circuit transfers to capacitor C 2 via resistance R 2 simultaneously, for capacitor C 2 is charged.The parameter value of configuration resistance R 2 and capacitor C 2, the delay time t=R2*C2 of adjusting delay circuit.When NFC sensor circuit continues output induced signal, while making the voltage at capacitor C 2 two ends rise to gradually the cut-in voltage of N-channel MOS pipe Q1, N-channel MOS pipe Q1 conducting, connect the connection line of system power supply VSYS and wireless charging emitter, make the operation that powers on of wireless charging emitter, start outside NFC equipment charge.After N-channel MOS pipe Q1 conducting, system power supply VSYS transfers to the grid of P channel MOS tube Q2 by N-channel MOS pipe Q1 drain electrode and source electrode, make P channel MOS tube Q2 cut-off, cut off the connection line of NFC sensor circuit and Bluetooth circuit, avoid induced signal to exert an influence to the normal operation of Bluetooth circuit.
Certainly, described second switch circuit and the first switching circuit also can be selected other switch elements such as triode, controllable silicon to coordinate simple peripheral circuit to set up and form, for example select the first described switching circuit of NPN type triode design, select the described second switch circuit of positive-negative-positive triode design etc., the present embodiment is not limited in above giving an example.
For the accuracy that guarantees to control, can also further connect filter capacitor C1 in described NFC sensor circuit one side, can also further connect earth resistance R1 in Bluetooth circuit one side, shown in Figure 2.Utilize the interference signal in filter capacitor C1 filtering induced signal transmission line, utilize resistance R 1 in the time that NFC sensor circuit is closed, release and be detained electric charge in the line, to prevent false triggering.
In addition, amplitude for fear of the induced signal of exporting by NFC sensor circuit is too high, Bluetooth chip in Bluetooth circuit is impacted to damage, preferably a diode D2 is connected between the battery in transmission line and the bluetooth equipment of induced signal, for example the negative electrode of diode D2 is connected to battery, the transmission line of anodic bonding induced signal, as shown in Figure 2, with by clamped the amplitude of induced signal below the amplitude of cell voltage VBAT, guarantee the security of operation of Bluetooth circuit.
In order to save the limited energy, making full use of unlimited natural resources is bluetooth equipment and the power supply of NFC equipment, so that the bluetooth equipment of the present embodiment environmental protection more, energy-conservation, the present embodiment is preferably set up solar panel on described bluetooth equipment, can specifically be arranged on the outer surface on bluetooth equipment main body top, to touch most possibly outside sunlight, and then to convert solar energy to electric energy be the power supply of circuit system in bluetooth equipment, or be the accumulation of energy of charging of battery in bluetooth equipment.
When laid solar panel on bluetooth equipment after, for reach have solar powered in, use solar powered as far as possible, only in the situation that cannot meeting power demands, solar energy just turns the battery powered purpose of design by bluetooth equipment inside, the voltage VBAT exporting by battery and the voltage V_SUN_OUT that exported by solar panel are transferred to a gating element by the present embodiment, select the high Voltage-output of a road amplitude by gating element, as system power supply VSYS, it is the circuit system power supply in bluetooth equipment.
As a kind of preferred design of the present embodiment, the present embodiment selects the double diode device D4 of a differential concatenation as described gating element, is connected between battery and solar panel, shown in Figure 2.In described double diode device D4, the negative electrode docking of two diodes, by the anodic bonding battery of one of them diode, the anodic bonding solar panel of another one diode, by the negative electrode output system power supply VSYS of two diodes.
When the output voltage V _ SUN_OUT of solar panel is during higher than cell voltage VBAT, connect the diode current flow of solar panel, using the output voltage V _ SUN_OUT of solar panel as system power supply VSYS, for the circuit system power supply in bluetooth equipment, for example transfer to wireless charging emitter by N-channel MOS pipe Q1, for the power supply of wireless charging emitter, and then be outside NFC equipment charge by wireless charging emitter.
Meanwhile, the voltage V_SUN_OUT of solar panel output can also be transferred to the charge-discharge control circuit in bluetooth equipment, be the battery charging accumulation of energy in bluetooth equipment by charge-discharge control circuit, in order in the time there is no sunlight, utilize battery for bluetooth equipment self and the power supply of outside NFC equipment.
In the time that extraneous sunray is weak or there is no sunlight, the voltage V_SUN_OUT exporting by solar panel is lower than cell voltage VBAT, now connecting the diode current flow of battery, using the voltage VBAT of battery output as system power supply VSYS, is the circuit system power supply in bluetooth equipment.
The circuit system theory diagram of the bluetooth equipment that Fig. 3 proposes for the present embodiment, describe as an example of vehicle-mounted Bluetooth acoustic enclosure example, except comprising above-mentioned NFC sensor circuit, solar panel, wireless charging emitter, Bluetooth circuit (can specifically set up and form by Bluetooth chip and peripheral circuit), battery and charge-discharge control circuit, USB interface and Miro_USB interface can also be further set, connect described Bluetooth circuit.Described USB interface and Miro_USB interface both can be used as data-interface, realized the cable data transmission between bluetooth equipment and outside source; Also can be used as charging inlet, in the time of bluetooth equipment external charge power supply, the charging current of charge power supply input is transferred to charge-discharge control circuit, it is the battery charging accumulation of energy of bluetooth equipment inside by charge-discharge control circuit, or self is as charge power supply, export the electric energy of its battery to outside equipment, such as mobile phone, bluetooth earphone etc. by charge-discharge control circuit and USB interface (or Miro_USB interface), and then adopt traditional wired charging modes, be external equipment charging.
In order to realize audio playing function and call function, in described vehicle-mounted Bluetooth acoustic enclosure, be also provided with audio power amplifier circuit, loud speaker SPK and microphone MIC, shown in Figure 3, when user starts after the Bluetooth function and mobile phone pairing of bluetooth equipment, after the audio signal of exporting by mobile phone receives via bluetooth equipment, export audio power amplifier circuit to and carry out after power amplification processing, drive loud speaker SPK to play the music in mobile phone.In the time having telephone access or user need to call, microphone MIC can receive user speech, is sent to mobile phone via Bluetooth circuit, and then is sent to the other side by mobile phone; And the other side's voice also can be sent to Baffle Box of Bluetooth via mobile phone, play to the machine user via Baffle Box of Bluetooth, realize call function.
Certainly, on described bluetooth equipment, button and indicator light can also be further set, connect respectively described Bluetooth circuit, as shown in Figure 3.Thus one, user can also control bluetooth equipment by operation push-button and start required function, and observes the current operating state of bluetooth equipment by indicator light.
The bluetooth equipment that the present embodiment proposes can utilize solar energy, wireless charging emitter and USB interface for outside equipment charge, and function of Bluetooth communication can use separately, or together use with wireless charging function, in meeting the different user demands of user, make that user's is more convenient to operate, quick.
Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art make in essential scope of the present utility model, also should belong to protection range of the present utility model.
Claims (10)
1. a bluetooth equipment, comprises Bluetooth circuit, NFC sensor circuit and wireless charging emitter; It is characterized in that: described NFC sensor circuit is in the time sensing that outside has NFC equipment to approach, and output induced signal one tunnel transfers to Bluetooth circuit, controls Bluetooth circuit and opens, and the delay circuit of separately leading up to transfers to the first switching circuit; Described the first switching circuit moves in the time that induced signal continues the corresponding delay time of time arrival delay circuit of output, controls wireless charging emitter and opens.
2. bluetooth equipment according to claim 1, it is characterized in that: described the first switching circuit is connected in the wireless charging control loop of wireless charging emitter, in the time that described induced signal continues the corresponding delay time of time arrival delay circuit of output, connect the wireless charging control loop of wireless charging emitter, control wireless charging emitter to outside NFC equipment charge.
3. bluetooth equipment according to claim 2, it is characterized in that: in described the first switching circuit, be provided with a N-channel MOS pipe, the grid of described N-channel MOS pipe connects delay circuit, drain electrode connected system power supply, and source electrode connects the power supply terminal of wireless charging emitter.
4. bluetooth equipment according to claim 3, it is characterized in that: in described delay circuit, be provided with a resistance and an electric capacity, described resistance directly connects or is connected between the induced signal output of NFC sensor circuit and the grid of N-channel MOS pipe by diode, and described electric capacity is connected between the grid and ground of N-channel MOS pipe.
5. according to the bluetooth equipment described in any one in claim 1 to 4, it is characterized in that: the induced signal of exporting by described NFC sensor circuit is via extremely described Bluetooth circuit of second switch circuit transmission, the control end of described second switch circuit connects the first switching circuit, in the time that the first switching circuit control wireless charging emitter is opened, trigger second switch circuit operation, cut off the connection line between Bluetooth circuit and NFC control circuit.
6. bluetooth equipment according to claim 5, it is characterized in that: in described second switch circuit, be provided with a P channel MOS tube, the grid of described P channel MOS tube connects the first described switching circuit, and by pull down resistor ground connection, the source electrode of described P channel MOS tube connects the induced signal output of NFC sensor circuit, and drain electrode connects the test side of Bluetooth circuit.
7. according to the bluetooth equipment described in any one in claim 1 to 4, it is characterized in that: in described bluetooth equipment, be provided with battery, described battery connects the negative electrode of a diode, the induced signal output of the anodic bonding NFC sensor circuit of described diode, is limited to the amplitude of the induced signal of NFC sensor circuit output in the amplitude of cell voltage.
8. according to the bluetooth equipment described in any one in claim 1 to 4, it is characterized in that: on described bluetooth equipment, be also provided with solar panel, described solar panel is arranged on the upper surface of bluetooth equipment main body outside, converting the solar energy receiving to electric energy, is the circuit system power supply in bluetooth equipment.
9. bluetooth equipment according to claim 8, it is characterized in that: in described bluetooth equipment, be provided with battery, the voltage of exporting by battery and the voltage exported by solar panel are via a gating element gating amplitude Gao mono-road Voltage-output, forming system power supply, is the circuit system power supply in bluetooth equipment.
10. bluetooth equipment according to claim 9, it is characterized in that: described gating element is the double diode device of the differential concatenation of a negative electrode docking, two anodes of described double diode device connect one to one with battery and solar panel respectively, the described system power supply of negative electrode output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320886869.1U CN203645668U (en) | 2013-12-31 | 2013-12-31 | Bluetooth device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320886869.1U CN203645668U (en) | 2013-12-31 | 2013-12-31 | Bluetooth device |
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| Publication Number | Publication Date |
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| CN203645668U true CN203645668U (en) | 2014-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320886869.1U Withdrawn - After Issue CN203645668U (en) | 2013-12-31 | 2013-12-31 | Bluetooth device |
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| CN (1) | CN203645668U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716073A (en) * | 2013-12-31 | 2014-04-09 | 青岛歌尔声学科技有限公司 | Bluetooth device |
| CN105227219A (en) * | 2015-10-27 | 2016-01-06 | 成都芯软科技发展有限公司 | Micro Energy Lose Bluetooth communication wiring board |
| CN110969820A (en) * | 2018-10-01 | 2020-04-07 | 英飞凌科技股份有限公司 | Measuring device, corresponding method and system |
-
2013
- 2013-12-31 CN CN201320886869.1U patent/CN203645668U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716073A (en) * | 2013-12-31 | 2014-04-09 | 青岛歌尔声学科技有限公司 | Bluetooth device |
| CN103716073B (en) * | 2013-12-31 | 2015-05-20 | 青岛歌尔声学科技有限公司 | Bluetooth device |
| CN105227219A (en) * | 2015-10-27 | 2016-01-06 | 成都芯软科技发展有限公司 | Micro Energy Lose Bluetooth communication wiring board |
| CN105227219B (en) * | 2015-10-27 | 2018-02-09 | 成都芯软科技发展有限公司 | Micro energy lose Bluetooth communication wiring board |
| CN110969820A (en) * | 2018-10-01 | 2020-04-07 | 英飞凌科技股份有限公司 | Measuring device, corresponding method and system |
| CN110969820B (en) * | 2018-10-01 | 2024-04-09 | 英飞凌科技股份有限公司 | Measuring device, corresponding method and system |
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