CN201039162Y - Bluetooth-frequency modulation signal transponder - Google Patents
Bluetooth-frequency modulation signal transponder Download PDFInfo
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- CN201039162Y CN201039162Y CNU2007201427226U CN200720142722U CN201039162Y CN 201039162 Y CN201039162 Y CN 201039162Y CN U2007201427226 U CNU2007201427226 U CN U2007201427226U CN 200720142722 U CN200720142722 U CN 200720142722U CN 201039162 Y CN201039162 Y CN 201039162Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The utility model relates to a Bluetooth-frequency modulation signal transponder, which is characterized in that the transponder comprises a Bluetooth module, a microcontroller, a frequency modulation transmitting circuit, an LCD module and a power circuit; the Bluetooth module is provided with a Bluetooth antenna; the frequency modulation transmitting circuit is provided with a frequency modulation antenna; the microcontroller is respectively connected with the Bluetooth module, the frequency modulation transmitting circuit and the LCD module, and an audio signal output interface of the Bluetooth module is connected with the frequency modulation transmitting circuit; the Bluetooth module is connected with a control key and a microphone. By implementing the repeater of the utility model, the sound signals sent by the Bluetooth mobile phone or other Bluetooth players can be played through the automobile sound equipment, thereby avoiding the adverse effect caused by using the earphone; when the Bluetooth mobile phone is used in a matched manner, hands-free communication can be achieved, so that the user can see six roads and listen to eight directions at any time in the communication process, the road condition can be observed at any time, and unsafe factors of driving are reduced.
Description
Technical field
The utility model relates to the applied in any combination of Bluetooth technology and frequency modulation technology, more particularly, relates to a kind of bluetooth-FM signal transponder, and the voice signal that makes bluetooth cellular phone or other bluetooth player broadcast can play back by automobile audio.
Background technology
Along with Bluetooth technology obtains increasingly extensive application, present many electronic installations have all possessed Bluetooth function.All be equipped with bluetooth earphone as present mobile phone great majority on the market, also had some MP3 players also to be equipped with bluetooth earphone.But, in actual applications, also have some problems.For example, when the driver uses the earphone receiving phone in startup procedure, can influence traffic safety, easily cause traffic accident.In addition, often use earphone can cause that also hearing descends.
The utility model content
The technical problems to be solved in the utility model is, the above-mentioned defective of in startup procedure, using earphone can cause living traffic accident or often use earphone that hearing is descended at prior art, a kind of bluetooth-FM signal transponder is provided, and the voice signal that makes bluetooth cellular phone or other bluetooth player broadcast can play back by automobile audio.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of bluetooth-FM signal transponder, comprise bluetooth module, microcontroller, modulating emission circuit, LCD module and power circuit; Described bluetooth module is provided with Bluetooth antenna; Described modulating emission circuit is provided with frequency-modulated antenna; Wherein, described microcontroller links to each other with institute bluetooth module, modulating emission circuit, LCD module respectively, and the audio signal output interface of described bluetooth module links to each other with described modulating emission circuit; Described bluetooth module is connected with control button and microphone.
In bluetooth described in the utility model-FM signal transponder, described microcontroller is connected with at least one LED light.
In bluetooth described in the utility model-FM signal transponder, described modulating emission circuit also is provided with the AUX input interface.
In bluetooth described in the utility model-FM signal transponder, the audio signal output interface of described bluetooth module also is connected with audio amplifier circuit, and described audio amplifier circuit is provided with headset output interface.
In bluetooth described in the utility model-FM signal transponder, described control button comprises that machine open/close button, Bluetooth pairing button, incoming call answering button, incoming call blocking button, end talk button, voice switching key, phone redial button, FM frequency configuration button, FM frequency adjustment button, volume adjusting button, phonetic dialing, stereo music Play Control button, mic mute button.
In bluetooth described in the utility model-FM signal transponder, described machine open/close button, Bluetooth pairing button, incoming call blocking button, end talk button are integrated on the END button; Incoming call answering button, phone redial button, phonetic dialing is integrated on the TALK button; Voice switching key, FM frequency configuration button are integrated on the MODE button, and described FM frequency is adjusted button, volume is regulated button and comprised that the UP that makes progress adjusts button and downward DOWN adjusts button; Music control, mic mute button are integrated on the PLAY/PAUSE button, and described music selection key comprises that PREV selects a last song and NEXT to select next song.
In bluetooth described in the utility model-FM signal transponder, comprise that power circuit comprises automobile power source power supply interface and powered battery interface.
In bluetooth described in the utility model-FM signal transponder, described microcontroller links to each other with described bluetooth module by UART Universal Asynchronous Receiver Transmitter.
In bluetooth described in the utility model-FM signal transponder, the audio signal output interface of described bluetooth module comprises L channel interface and R channel interface, and described modulating emission circuit is the stereo fm signal circuit.
In bluetooth described in the utility model-FM signal transponder, described headset output interface comprises L channel interface and R channel interface, and described AUX input interface comprises L channel interface and R channel interface.
Implement bluetooth of the present utility model-FM signal transponder, have following beneficial effect: the voice signal that bluetooth cellular phone or other bluetooth player can be broadcasted is play by automobile audio, avoids the harmful effect of using earphone to bring; But and hand-free call during with the supporting use of bluetooth cellular phone, even like this in communication process, also can have sharp eyes and keen ears, observe road conditions at any time, reduce the unsafe factor of driving.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the module frame chart of bluetooth-FM signal transponder of the utility model first embodiment;
Fig. 2 is the module frame chart of bluetooth-FM signal transponder of the utility model second embodiment;
Fig. 3 is the module frame chart of the bluetooth module in the utility model bluetooth-FM signal transponder;
The surface structure schematic diagram of bluetooth-FM signal transponder of Fig. 4 ground the utility model second embodiment;
Fig. 5 A-5G is the schematic diagram that LCD goes up displaying contents in bluetooth-FM signal transponder use of the utility model embodiment.
Embodiment
The utility model relates to bluetooth-frequency modulation (FM) signal repeater, is applicable to automobile audio.As preferably, this bluetooth-frequency modulation (FM) signal repeater is exported stereo FM signal.It can be connected with bluetooth cellular phone and vehicle-mounted FM receiver, realizes the onboard wireless hand-free call function of bluetooth cellular phone, the playing function of Bluetooth stereo music.
Figure 1 shows that the composition frame chart of bluetooth-FM signal transponder of the utility model first embodiment.As shown in the figure, bluetooth of the present utility model-FM signal transponder comprises stereosonic blue tooth module 10, FM radiating circuit 20, microcontroller (MCU) 30, LCD module 40, LED light 50, power adjustment and charging module 60, button 70, microphone 80.Stereosonic blue tooth module 10 has Bluetooth antenna 11, and FM radiating circuit 20 has FM antenna 21.
The audio output interface of stereosonic blue tooth module 10 is connected to FM radiating circuit 20, to send stereo left channel signal L and stereo right-channel signals R to the FM radiating circuit.Bluetooth module 10 is connected with microphone 80 with button 70.
MCU 30 links to each other with bluetooth module 10, and links to each other with FM radiating circuit 20, LCD module 40 and LED light 50.
Power adjustment and charging module 60 connect automobile power source, are battery 62 chargings.Battery 62 provides operating voltage by power adjustment and charging module 60 for above-mentioned each assembly, for example+3.3V VCC and+1.8V VDD.
Fig. 2 is the module frame chart of bluetooth-FM signal transponder of the utility model second embodiment.Transponder shown in Figure 2 is after improving on the basis of transponder shown in Figure 1.The main distinction is to have increased an audio amplifier circuit 90 at the audio signal output interface of stereosonic blue tooth module 10, and on FM radiating circuit 20, increased the AUX input interface, wherein, audio amplifier circuit 90 is provided with the earphone interface (not shown), is used to utilize earphone to play sound.
Fig. 3 is the module frame chart of an embodiment of bluetooth module 10.As shown in Figure 3, bluetooth module 10 comprises bluetooth dual-mode antenna 11 and coupled baseband circuit 13.Baseband circuit 13 also is connected with audio input interface 15, user interface 17 and audio signal output interface 19.
In one embodiment, audio input interface 15 can be connected to the line socket of a wire microphone.In another embodiment, as when bluetooth of the present utility model-when the FM signal repeater had built-in microphone, audio input interface 15 can be directly connected to built-in microphone.
Audio signal output interface 19 links to each other with FM radiating circuit 20, as shown in Fig. 1 and Fig. 2.Bluetooth module 10 links to each other with MCU 30 by baseband circuit 13.
In transponder of the present utility model, user interface 17 can be a plurality of buttons, for example the button among Fig. 1 70.In first embodiment, button 70 comprises three buttons: multifunctional multiplexing key MFB, rise UP and downward modulation DOWN button.In this embodiment, multifunction push key MFB comprises a plurality of keypress functions, redials the function of button, FM frequency configuration button, volume adjustment button as machine open/close button, Bluetooth pairing button, incoming call answering button, incoming call blocking button, end talk button, voice switching key, phone.
Also above-mentioned multifunction push key branch can be arranged, corresponding one or two function of each button is to be user-friendly to.For example, in a second embodiment, as Fig. 2 and shown in Figure 4, can comprise eight buttons: TALK button 404, END button 403, MODE button, the UP that makes progress adjust button 405, DOWN adjusts button 406, PLAY/PAUSE button 408, PREV selection key 401 and NEXT selection key 402 downwards.For example machine open/close button, Bluetooth pairing button, incoming call blocking button, end talk button are integrated on the END button 403; Incoming call answering button, phone redial button, phonetic dialing is integrated on the TALK button 404; Voice switching key, FM frequency configuration button are integrated on the MODE button, and the FM frequency is adjusted button, volume is regulated button and comprised that the UP that makes progress adjusts button 405 and downward DOWN adjusts button 406; Music control, mic mute button are integrated on the PLAY/PAUSE button 408, and the music selection key comprises that PREV 401 selects last one bent and NEXT 402 next song of selection.Among Fig. 4, be provided with display screen 409.
In operation, the bluetooth module is realized the function of bluetooth, to FM radiating circuit output audio signal L/R, gathers actuation of keys, handles the microphone voice signal, sends order to MCU, detects battery electric quantity and management charging circuit; The FM radiating circuit is modulated audio signal L/R, with the emission FM signal; LCD module and LED display operation, operating state and FM frequency; MCU receives the order of bluetooth module, control FM radiating circuit, LCD module and LED light; The Li-on battery is bluetooth-each assembly power supply of FM transponder, automobile power source (as+12V or 24V) charge power supply is provided.The utility model can also be selected earphone voice output and the input of AUX music.
Bluetooth of the present utility model-FM transponder has following function:
* Bluetooth pairing: can be connected with the bluetooth cellular phone pairing.The utlity model has compatibility preferably, adapt to the mobile phone of multiple brand on the market;
* phone is hands-free: use product to carry microphone and vehicle-mounted FM receiver, realize the hand-free function of bluetooth cellular phone phone;
* stereo music is play: the utility model can receive the music of stereosonic blue tooth mobile phone or other bluetooth player plays.If when the phone incoming call is arranged, automatically switch to the call voice state; Finish voice call or when hanging up the telephone, automatically return to music (as realizing) by the software in the bluetooth module.
* phonetic dialing:, can carry out audio call easily by microphone calling handset voice call book; (this function needs the mobile phone support)
* voice switch: the voice of conversation can switch on the mobile phone from this hands-free device, protection caller's privacy; (this function needs the mobile phone support)
* phone redials: the telephone number that can redial last conversation easily;
* speech is handled: the utility model has good restraining ability to echo in the voice call and background noise;
In the first embodiment of the present invention, be provided with as follows:
* button operation: dispose 3 buttons, be used for Bluetooth pairing, telephony feature operation, volume and regulate and the adjustment of FM tranmitting frequency;
* LCD shows: show pairing state, caller ID, phone exhalation prompting, volume adjusting, FM tranmitting frequency etc.
* LED indication: a red LED is indicated the connection status of this device and mobile phone, is blink states in pairing, lights when the pairing successful connection, connects when disconnecting and extinguishes; A blue led is as the LCD display background light source;
* the FM tranmitting frequency is regulated: the FM tranmitting frequency can be regulated by button, frequency modulation step-length 0.1MHz.Frequency after the adjusting can store;
* volume is regulated: FM sends the L/R audio volume and can regulate, 8-16 level (looking the LCD figure place showing decides)
* antenna: the utility model inside is provided with Bluetooth antenna and FM antenna;
* power supply: 3.7V lithium battery power supply, vehicle power quick charge.The two ends of charging wire are respectively automobile cigarette lighter plug and DC plug.
As mentioned above, in one embodiment, bluetooth of the present utility model-FM transponder is provided with three button: MFB (multifunction push key), UP, DOWN.
The MFB button is a multifunctional multiplexing key, is used for switching on and shutting down, Bluetooth pairing, phone operation, FM frequency mode etc.
* start: at off-mode, the long MFB key of pressing was started shooting in two seconds.If last time pairing once connected mobile phone before the shutdown, then from the last mobile phone that connects that is dynamically connected;
* pairing: started shooting in five seconds by the MFB key and enter the pairing state at the shutdown duration, for example when the utility model PIN Code be 1234.When this device is found in the Bluetooth of mobile phone search, input PIN Code 1234 pairings immediately;
* shutdown: press the shutdown in five seconds of MFB key at the start duration;
* answerphone: when the phone incoming call is arranged, the short MFB key answerphone of pressing;
* refusing to receive telephone: when the phone incoming call was arranged, the long MFB key of press was until the incoming call interruption;
* finish conversation: in the communication process, weak point is hung up the telephone by the MFB key;
* voice switch: in the communication process, longly switch on the mobile phone by two seconds voice of MFB key, if longly again press two seconds voice of MFB key and switch back hands-free;
* phone redials: under holding state, and the long number that redialed last conversation by the MFB key in two seconds automatically;
* FM frequency setting: rapid double tap MFB key enters or withdraws from the FM tranmitting frequency pattern is set;
The UP button is used for regulating and increasing FM frequency, audio frequency output volume, and different audio prompt sounds is arranged in the adjustment process.
* volume increases: under conversation, played in stereo state, weak point is pressed the UP key once, and volume increases one-level.If button is not put continuously, volume increases step by step, until the highest; (level is long decides according to reality debugging effect)
* the FM frequency increases: under FM frequency configuration pattern, weak point is pressed the UP key once, and frequency increases by a step.If button is not put continuously, frequency progressively increases, until the highest; (it is fixed that step-length is come according to reality debugging effect)
The DOWN button is used for regulating and reducing FM frequency, audio frequency output volume, and different audio prompt sounds is arranged in the adjustment process.
* volume reduces: under conversation, played in stereo state, weak point is pressed the DOWN key once, and volume reduces one-level.If button is not put continuously, volume reduces step by step, until minimum; (level is long decides according to reality debugging effect)
* the FM frequency reduces: under FM frequency configuration pattern, weak point is pressed the UP key once, and frequency reduces a step.If button is not put continuously, frequency progressively reduces, until minimum; (it is fixed that step-length is come according to reality debugging effect)
In one embodiment, LCD displaying contents:
The LCD module is that 7 segment encodes show, increases decimal point ". " ": " and FM frequency character.Acquiescence be shown as the FM frequency.
* Bluetooth pairing: during pairing such as Fig. 5 A show " PAIRING ", pairing is returned default mode after finishing;
* FM tranmitting frequency: LCD acquiescence is shown as the FM pattern, and as Fig. 5 B, the FM tranmitting frequency shows identical with it;
* volume is regulated: volume is regulated and is shown that available digital shows, shown in Fig. 5 C.Also can indicate, determine that with the number of LCD 7 segment encodes the sum of series of regulating shows progression with line segment " || || || || | ".The left side is minimum, and the right is maximum.The volume adjustment is returned default mode after finishing;
* the Inbound Calls number shows: show caller ID, it is fixed to come according to LCD 7 segment encode numbers as Fig. 5 D figure place showing.When the number number shows inadequately, adopt the circulation of rolling from right to left to show 2 field bit of circulation time midfeather.Behind the closing of the circuit, show that the telephoometry time divides and second, as " 02:18 ", as Fig. 5 E.Return default mode after the telephone finished;
* phone is breathed out: show CALL OUT when having phone to get, shown in Fig. 5 F.Behind the closing of the circuit, show that the telephoometry time divides and second, as " 02:18 ", shown in Fig. 5 G.Return default mode after the telephone finished;
* power supply indication: when battery electric quantity was not enough, character was with fast blink at interval in 1 second on the LCD screen.Under the charged state, character glimmers at a slow speed on the LCD screen, bright 4 seconds, goes out 1 second.When charging finished, character recovered normal condition on the LCD screen.
* match indicator light: red LED lamp is indicated the connection status of this device and mobile phone, is blink states in pairing, lights when the pairing successful connection, connects when disconnecting and extinguishes;
* LCD background light: blue led is as the LCD display background light source.
Background light was luminous when phone incoming call, exhalation were arranged, and continued during closing of the circuit to light 15 seconds;
The phone incoming call continued to light when not connecing 20 seconds;
Continued when pressing any key to light 10 seconds;
Light during startup and shutdown and continue 5 seconds;
On the not enough LCD screen of battery electric quantity, during the character fast blink, continued to light 10 seconds;
When charging finishes, continued to light 5 seconds;
If pull out charge power supply, continued to light 5 seconds.
In the second embodiment of the present invention, be provided with as follows:
* button operation: dispose 8 buttons, be used for Bluetooth pairing, telephony feature operation, music, volume and regulate and the adjustment of FM tranmitting frequency;
* LCD shows: show pairing state, caller ID, phone exhalation prompting, volume adjusting, FM tranmitting frequency etc.
* LED indication: green LED is indicated the connection status of this device and mobile phone, is blink states in pairing, lights when the pairing successful connection, connects when disconnecting and extinguishes; Blue led is as LCD display
Background light source;
* the FM tranmitting frequency is regulated: the FM tranmitting frequency can be regulated by button, frequency modulation step-length 0.1MHz/0.5MHz.Frequency after the adjusting can store;
* volume is regulated: FM sends the L/R audio volume and can regulate, and LCD can carry out the content that of short duration demonstration volume is reconciled;
* antenna: this product inside is provided with Bluetooth antenna and FM antenna;
* Headset output: blue tooth voice and stereo music can be selected the output of headset interface;
* AUX input: the music of outside stereo player can be imported the AUX interface, sends by FM;
* power supply: 3.7V lithium battery power supply, the quick charge of vehicle-mounted 12V power supply.The two ends of charging wire are respectively automobile cigarette lighter plug and DC plug.
4 button operations
This product is provided with eight button: MODE, UP, DOWN, TALK, END, PLAY/PAUSE, PREV, NEXT.
* start: at off-mode, the long END key of pressing was started shooting in two seconds.If last time pairing once connected mobile phone before the shutdown, then from the last mobile phone that connects that is dynamically connected;
* pairing: started shooting in five seconds by the END key and enter the pairing state at the shutdown duration.When this device is found in the Bluetooth of mobile phone search, import this product P IN Code 1234 and match immediately;
* shutdown: press the shutdown in five seconds of END key at the start duration;
* answerphone: when the phone incoming call is arranged, the short TALK key answerphone of pressing;
* refusing to receive telephone: when the phone incoming call was arranged, the short END key of press interrupted sending a telegram here;
* finish conversation: in the communication process, weak point is hung up the telephone by the END key;
* voice switch: in the communication process, shortly switch on the mobile phone by two seconds voice of MODE key, if shortly again press two seconds voice of MODE key and switch back hands-free;
* phonetic dialing: under holding state, weak point enters the phonetic dialing state by the TALK key;
* phone redials: under holding state, and the long number that redialed last conversation by the TALK key in two seconds automatically;
* FM frequency setting: under holding state, longly entered FM frequency setting state in five seconds by MODE.Weak point increases by UP or DOWN button or reduces the FM frequency then, and the adjusting step-length is 0.1MHz; If length is pressed UP or DOWN also kept after two seconds, the FM frequency increases continuously fast or reduces, per step 0.5MHz, and the adjusting step-length is 0.5MHz.After frequency adjustment is finished, press the MODE storage;
* music control: when playing the Bluetooth stereo music, music is suspended, again by once making music continue to play by PLAY/PAUSE;
* music is selected: when playing the Bluetooth stereo music, press PREV and select a last song, select next song by NEXT;
* volume is regulated: under conversation, played in stereo state, shortly press UP or DOWN key once, volume increase or reduce one-level.If button is not put continuously, volume continues to increase step by step or reduce; (level is long decides according to reality debugging effect)
* Microphone is quiet: under talking state, press the PLAY/PAUSE key, make Microphone quiet; It is quiet to press the PLAY/PAUSE cancellation again;
* factory reset: pressed PREV and NEXT simultaneously five seconds, and removed all Bluetooth operation information, revert to Default Value;
5 displaying contents
LCD Module is 12 " rice " words or 7 n segment display ns, is provided with decimal point ". ", ": ", AUX, earphone output, microphone is quiet and symbol such as FM frequency.Acquiescence be shown as the FM frequency.
* Bluetooth pairing: show during pairing " PAIRING " that shown in Fig. 5 A, pairing is returned default mode after finishing;
* FM tranmitting frequency: acquiescence being shown as the FM pattern, and FM tranmitting frequency displaying contents is identical with it, shown in Fig. 5 B;
* volume is regulated: volume is regulated and is shown volume numerical value.The volume adjustment is returned default mode after finishing; , for being 10 grades, volume then shows shown in Fig. 5 C as current;
* caller ID shows: show caller ID, show 12 of numbers, shown in Fig. 5 D.When the number number shows inadequately, adopt the circulation of rolling from right to left to show 2 field bit of circulation time midfeather.Behind the closing of the circuit, show that the telephoometry time divides and second, shown in Fig. 5 E " 02:18 ".Return default mode after the telephone finished;
* go electric number to show: to show CALL OUT when getting phone, shown in Fig. 5 F.Behind the closing of the circuit, show that the telephoometry time divides and second, as " 02:18 ", shown in Fig. 5 G.Return default mode after the telephone finished;
* AUX input: light symbol AUX
* FM output: light symbol FM
* Headset output: light symbol
* playing back music: light symbol
* music is suspended: light symbol
* Microphone is quiet: light symbol
* power supply indication: when battery electric quantity was not enough, character was with fast blink at interval in 1 second on the LCD screen.Under the charged state, character glimmers at a slow speed on the LCD screen, bright 4 seconds, goes out 1 second.When charging finished, character recovered normal condition on the LCD screen.
LED shows
* match indicator light: green LED lamp is indicated the connection status of this device and mobile phone, is blink states in pairing, lights when the pairing successful connection, connects when disconnecting and extinguishes;
* LCD background light: blue led is as the LCD display background light source.
Background light was luminous when phone incoming call, exhalation were arranged, and continued during closing of the circuit to light 15 seconds;
The phone incoming call continued to light when not connecing 20 seconds;
Continued when pressing any key to light 10 seconds;
Light during startup and shutdown and continue 5 seconds;
On the not enough LCD screen of battery electric quantity, during the character fast blink, continued to light 10 seconds;
When charging finishes, continued to light 5 seconds;
If pull out charge power supply, continued to light 5 seconds.
Bluetooth-frequency modulation of the present utility model (FM) signal repeater meets bluetooth 1.2 standards, bluetooth direct line of sight communication distance 10m.FM transmission frequency 88MHz-108MHz, transmission range is greater than 3m.
In one embodiment, the performance parameter of bluetooth of the present utility model-FM signal repeater is as follows:
* bluetooth standard: Bluetooth 1.2, Class2
* FM parameter: FM transmission frequency 88MHz-108MHz, tunable steps 0.1MHz/0.5MHz, the clear space transmission range is greater than 3m;
* audio frequency parameter:
Voice 300Hz ~ 3600Hz
Stereo audio 20Hz ~ 15kHz (FM emission)
Distortion＜1% (FM emission)
The audio frequency signal to noise ratio〉60dB (non-weighted)
Channel separation degree 20dB min, 40dB type (FM emission)
* battery parameter
The built-in lithium electricity 3.7V that fills
The vehicle-mounted 12V power supply of charge power supply
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201427226U CN201039162Y (en) | 2007-05-14 | 2007-05-14 | Bluetooth-frequency modulation signal transponder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201427226U CN201039162Y (en) | 2007-05-14 | 2007-05-14 | Bluetooth-frequency modulation signal transponder |
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| CN201039162Y true CN201039162Y (en) | 2008-03-19 |
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| CNU2007201427226U Expired - Fee Related CN201039162Y (en) | 2007-05-14 | 2007-05-14 | Bluetooth-frequency modulation signal transponder |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259904A (en) * | 2009-02-13 | 2013-08-21 | 株式会社电装 | In-vehicle apparatus with handsfree function |
| CN103327460A (en) * | 2012-03-19 | 2013-09-25 | 卡西欧计算机株式会社 | Event notification device and event notification system |
| CN103684500A (en) * | 2012-09-25 | 2014-03-26 | 华为技术有限公司 | Pairing method of wireless transmitting terminal and wireless receiving terminal and related device |
| CN105024775A (en) * | 2015-07-15 | 2015-11-04 | 广州酷狗计算机科技有限公司 | Vehicle-mounted Bluetooth-to-frequency modulation emitter and FM channel adjustment method |
| CN105228094A (en) * | 2015-10-14 | 2016-01-06 | 深圳市元征科技股份有限公司 | A kind of audio frequency transmission method and device |
| CN106027125A (en) * | 2016-08-01 | 2016-10-12 | 合肥佳瑞林电子技术有限公司 | Vehicle-mounted Bluetooth module |
| CN106170043A (en) * | 2016-07-26 | 2016-11-30 | 深圳市儒文科技有限公司 | Can be by the board separation formula Bluetooth receptions FM system and method for button frequency modulation |
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| WO2018072346A1 (en) * | 2016-10-19 | 2018-04-26 | 广州视源电子科技股份有限公司 | Data forwarding apparatus, and data forwarding method, device, and system |
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- 2007-05-14 CN CNU2007201427226U patent/CN201039162Y/en not_active Expired - Fee Related
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