CN2888751Y - A wireless audio transferring and receiving system - Google Patents
A wireless audio transferring and receiving system Download PDFInfo
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- CN2888751Y CN2888751Y CNU2006200579424U CN200620057942U CN2888751Y CN 2888751 Y CN2888751 Y CN 2888751Y CN U2006200579424 U CNU2006200579424 U CN U2006200579424U CN 200620057942 U CN200620057942 U CN 200620057942U CN 2888751 Y CN2888751 Y CN 2888751Y
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- audio
- antenn
- antenn audio
- transmits
- receiving system
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Abstract
The utility model discloses a wireless audio frequency transmitting & receiving system, which comprises a wireless audio frequency transmitting device and a wireless audio frequency receiving device; the wireless audio frequency transmitting device is provided with no less than one; and the audio frequency source of each wireless audio frequency transmitting device is a microphone; the internal circuits of the wireless audio frequency transmitting device and wireless audio frequency receiving device are all provided with a CSR Bluetooth chip which is used to process the voice frequency signal. The utility model can avoid the frequency interference in the operating process and improve the practicability of the wireless audio frequency transmitting and receiving system.
Description
Technical field
The utility model relates to a kind of ANTENN AUDIO that is mainly used in occasions such as classroom, meeting room and transmits and receives system.
Background technology
Existing ANTENN AUDIO transmits and receives system, be commonly used to the sound amplifier of giving lessons in the classroom as instructors, generally have following characteristics: 1) adopt the mode of frequency modulation to realize, but exist, be unfavorable for using a plurality of apparatus for receiving audio and emitter in same occasion with interference frequently; 2) just finish the transmission of audio frequency, can not remote control control audio output gain size; 3) audio emitting device or hang on the waist, or grip with hand, the inconvenience in the use caused; 4) apparatus for receiving audio receives only the audio signal that an audio emitting device sends; 5) apparatus for receiving audio and audio emitting device are man-to-man.In view of These characteristics, limited to existing ANTENN AUDIO and transmitted and received applying of system.
Summary of the invention
The purpose of this utility model is at the problems referred to above, provides a kind of ANTENN AUDIO based on frequency hopping to transmit and receive system, to avoid in the use problem of co-channel interference and to improve ANTENN AUDIO and send out the practicality of thanking with receiving system.
For achieving the above object, the technical solution of the utility model is as follows: a kind of ANTENN AUDIO transmits and receives system, comprises ANTENN AUDIO emitter and ANTENN AUDIO receiving system; Described ANTENN AUDIO emitter has and is no less than one, and the audio-source of each ANTENN AUDIO emitter is microphone, and is equipped with the Bluetooth chip that is used for audio signal in the internal circuit of ANTENN AUDIO emitter and ANTENN AUDIO receiving system.
The internal circuit of above-mentioned ANTENN AUDIO emitter comprises battery charger, DC-DC change-over circuit, LDO linear voltage regulator circuit, voice pick-up head and built-in 2.4GHz antenna, the output of battery charger connects the input of DC-DC change-over circuit and LDO linear voltage regulator circuit respectively, the output of LDO linear voltage regulator circuit inserts the input of voice pick-up head, the DC-DC change-over circuit provides power supply to Bluetooth chip, voice pick-up head output audio signal is to Bluetooth chip, and the audio signal output of handling through Bluetooth chip is to the 2.4GHz antenna.
The internal circuit of above-mentioned ANTENN AUDIO receiving system comprises D.C. regulated power supply, DC-DC change-over circuit, audio frequency amplification IC, RF coaxial transmission line and external 2.4GHz antenna, the output of D.C. regulated power supply connects the input of DC-DC change-over circuit, the DC-DC change-over circuit provides power supply to Bluetooth chip, 2.4GHz the audio signal that antenna receives is through RF coaxial transmission line input Bluetooth chip, audio signal output to the audio frequency of handling through Bluetooth chip amplifies IC.
Above-mentioned audio frequency amplifies IC and has the power amplifier interface.
Above-mentioned audio emitting device is arranged in the housing, and this housing has lanyard or clip.
The Advanced Audio DistributionProfile that audio transmission standard of the present utility model is a Bluetooth technology, or Audio Gateway.
Above-mentioned ANTENN AUDIO emitter is provided with the operating means of the audio frequency output gain size of remote control ANTENN AUDIO receiving system.The standard of the audio frequency output gain size of remote control ANTENN AUDIO receiving system is the Audio Video Remote Control Proflie of Bluetooth technology, or Hands Free Profile.
Above-mentioned ANTENN AUDIO receiving system can receive the audio signal of an above audio emitting device simultaneously, and exports through reverberation.
Above-mentioned ANTENN AUDIO receiving system carries out audio frequency by the inquiry of Bluetooth technology with matching operation with the ANTENN AUDIO emitter and is connected.
The utility model is by adopting said structure, has following beneficial effect: 1) adopt the bluetooth frequency hopping to realize, avoiding using mutual interference mutually between a plurality of apparatus for receiving audio and emitter in same occasion, mainly is the co-channel interference of avoiding the frequency modulation series products to use in same occasion; 2) apparatus for receiving audio can receive the audio signal that more than one audio emitting device sends simultaneously, exports after reverberation, is fit to use the occasion of several audio emitting devices and an apparatus for receiving audio realization audio transmission; 3) the audio frequency output gain size that audio emitting device can the remote control apparatus for receiving audio is flexible and convenient to use; 4) each apparatus for receiving audio can with the supporting use of the audio emitting device of any one; When 5) apparatus for receiving audio and audio emitting device used, the connection of audio frequency disconnects as long as simply can realize by a key on audio emitting device, and was easy to operate; 6) audio emitting device is more small and exquisite, and is in light weight, and exquisite appearance can be hung, and perhaps is sandwiched in the front, and is easy to carry attractive in appearance; 7) audio emitting device adopts built-in aerial; 8) audio emitting device is low in energy consumption, and the audio transmission time is long continuously.Can be widely applied to occasions such as classroom, meeting room.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the circuit block diagram of ANTENN AUDIO emitter described in the utility model;
Fig. 3 is the circuit block diagram of ANTENN AUDIO receiving system described in the utility model;
Fig. 4 is the concrete enforcement circuit diagram of ANTENN AUDIO emitter described in the utility model;
Fig. 5 is the concrete enforcement circuit diagram of ANTENN AUDIO receiving system described in the utility model.
Now the utility model is described in further detail in conjunction with the accompanying drawings and embodiments:
Embodiment
To shown in Figure 5, the utility model is made up of ANTENN AUDIO emitter 1 and ANTENN AUDIO receiving system 3 as Fig. 1.Have lanyard or clip 2 on ANTENN AUDIO emitter 1 housing, the ANTENN AUDIO receiving system 3 outer coaxial transmission lines 4 that pass through are connected with RF reception transmitting antenna 5.
ANTENN AUDIO emitter 1 is made up of battery charger A1, DC-DC change-over circuit B1, LDO linear voltage regulator circuit C1, Bluetooth chip D1, voice pick-up head E1 and built-in 2.4GHz antenna F1, the output of battery charger connects the input of DC-DC change-over circuit and LDO linear voltage regulator circuit respectively, the output of LDO linear voltage regulator circuit inserts the input of voice pick-up head, the DC-DC change-over circuit provides power supply to Bluetooth chip, voice pick-up head output audio signal is to Bluetooth chip, and the audio signal output of handling through Bluetooth chip is to the 2.4GHz antenna.The physical circuit of ANTENN AUDIO emitter implements to see Fig. 4.
ANTENN AUDIO receiving system 3 amplifies IC D3, RF coaxial transmission line E3 by 5V D.C. regulated power supply A3, DC-DC circuit B3, Bluetooth chip C3, audio frequency and 2.4GHz external antenna F3 forms, the output of 5V D.C. regulated power supply connects the input of DC-DC change-over circuit, the DC-DC change-over circuit provides power supply to Bluetooth chip, 2.4GHz the audio signal that antenna receives inserts Bluetooth chip through the RF coaxial transmission line, audio signal output to the audio frequency of handling through Bluetooth chip amplifies IC.Audio frequency amplification IC has the power amplifier interface and is connected with the AV power amplifier, to receive the wireless audio signal source.The physical circuit of ANTENN AUDIO receiving system implements to see Fig. 5.
Software section of the present utility model adopts Bluetooth technology to realize, not only can utilize frequency hopping to break away from the problem that traditional wireless public address systems such as co-channel interference can't overcome, can also make and have good operability between audio emitting device and apparatus for receiving audio, and each apparatus for receiving audio can with the supporting use of the audio emitting device of any one, more practical more than traditional wireless public address system.The utility model can adopt following two methods to realize.
Implementation method one:
| The audio emitting device application layer | |
| A2DP | AVRCP |
| The connection management layer | |
| Bluetooth protocol repertory | |
| Base band | |
| The apparatus for receiving audio application layer | |
| A2DP | AVRCP |
| The connection management layer | |
| Bluetooth protocol repertory | |
| Base band | |
A2DP (Advanced Audio Distribution Profile) and AVRCP (Audio VideoRemote Control Proflie) are the application section of Bluetooth specification, adopt these two to use the volume control that section is realized audio transmission and apparatus for receiving audio in the utility model implementation method one.
Implementation method two:
| The audio emitting device application layer |
| AG |
| The connection management layer |
| Bluetooth protocol repertory |
| Base band |
| The apparatus for receiving audio application layer |
| HFP |
| The connection management layer |
| Bluetooth protocol repertory |
| Base band |
AG (Audio Gateway) and HFP (Hands Free Profile) are the application section of Bluetooth specification, and the utility model implementation method two adopts these two to use the volume control that section is realized audio transmission and apparatus for receiving audio.
Claims (10)
1, a kind of ANTENN AUDIO transmits and receives system, comprise ANTENN AUDIO emitter and ANTENN AUDIO receiving system, it is characterized in that: described ANTENN AUDIO emitter has and is no less than one, and the audio-source of each ANTENN AUDIO emitter is a microphone, and is equipped with the Bluetooth chip that is used for audio signal in the internal circuit of ANTENN AUDIO emitter and ANTENN AUDIO receiving system.
2, a kind of ANTENN AUDIO according to claim 1 transmits and receives system, it is characterized in that: the internal circuit of described ANTENN AUDIO emitter comprises battery charger, the DC-DC change-over circuit, LDO linear voltage regulator circuit, voice pick-up head and built-in 2.4GHz antenna, the output of battery charger connects the input of DC-DC change-over circuit and LDO linear voltage regulator circuit respectively, the output of LDO linear voltage regulator circuit inserts the input of voice pick-up head, the DC-DC change-over circuit provides power supply to Bluetooth chip, voice pick-up head output audio signal is to Bluetooth chip, and the audio signal output of handling through Bluetooth chip is to the 2.4GHz antenna.
3, a kind of ANTENN AUDIO according to claim 1 and 2 transmits and receives system, it is characterized in that: the internal circuit of described ANTENN AUDIO receiving system comprises D.C. regulated power supply, DC-DC change-over circuit, audio frequency amplification IC, RF coaxial transmission line and external 2.4GHz antenna, the output of D.C. regulated power supply connects the input of DC-DC change-over circuit, the DC-DC change-over circuit provides power supply to Bluetooth chip, 2.4GHz the audio signal that antenna receives is through RF coaxial transmission line input Bluetooth chip, audio signal output to the audio frequency of handling through Bluetooth chip amplifies IC.
4, a kind of ANTENN AUDIO according to claim 3 transmits and receives system, it is characterized in that: described audio frequency amplifies IC and has the power amplifier interface.
5, a kind of ANTENN AUDIO according to claim 1 transmits and receives system, it is characterized in that: described audio emitting device is arranged in the housing, and this housing has lanyard or clip.
6, a kind of ANTENN AUDIO according to claim 1 transmits and receives system, it is characterized in that: the standard of audio transmission is the Advanced Audio Distribution Profile of Bluetooth technology, or AudioGateway.
7, a kind of ANTENN AUDIO according to claim 1 transmits and receives system, it is characterized in that: the ANTENN AUDIO emitter is provided with the operating means of the audio frequency output gain size of remote control ANTENN AUDIO receiving system.
8, a kind of ANTENN AUDIO according to claim 8 transmits and receives system, it is characterized in that: the standard of the audio frequency output gain size of remote control ANTENN AUDIO receiving system is the AudioVideo Remote Control Proflie of Bluetooth technology, or Hands Free Profile.
9, a kind of ANTENN AUDIO according to claim 6 transmits and receives system, it is characterized in that: the ANTENN AUDIO receiving system receives the audio signal of an above audio emitting device simultaneously, and exports through reverberation.
10, a kind of ANTENN AUDIO according to claim 1 transmits and receives system, it is characterized in that: the ANTENN AUDIO receiving system carries out audio frequency by the inquiry of Bluetooth technology with matching operation with the ANTENN AUDIO emitter and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200579424U CN2888751Y (en) | 2006-04-19 | 2006-04-19 | A wireless audio transferring and receiving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200579424U CN2888751Y (en) | 2006-04-19 | 2006-04-19 | A wireless audio transferring and receiving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2888751Y true CN2888751Y (en) | 2007-04-11 |
Family
ID=38047322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200579424U Expired - Fee Related CN2888751Y (en) | 2006-04-19 | 2006-04-19 | A wireless audio transferring and receiving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2888751Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102571116A (en) * | 2010-12-31 | 2012-07-11 | 上海华勤通讯技术有限公司 | Full-duplex wireless microphone system |
| CN103152081A (en) * | 2013-03-15 | 2013-06-12 | 青岛歌尔声学科技有限公司 | Bluetooth device |
| CN103368614A (en) * | 2013-06-21 | 2013-10-23 | 深圳市力同亚太科技有限公司 | Audio transmitting method, audio receiving method, transmitting device and receiving device |
| CN103402151A (en) * | 2013-08-16 | 2013-11-20 | 大连新天地物联网科技有限公司 | Portable microphone with electric power supplied by voice vibration |
| WO2016011941A1 (en) * | 2014-07-24 | 2016-01-28 | 绵阳声赛耳科技有限公司 | Wireless amplification equipment |
| CN105363127A (en) * | 2015-12-01 | 2016-03-02 | 杭州承诺医疗科技有限公司 | Sacral nerve stimulation generator |
-
2006
- 2006-04-19 CN CNU2006200579424U patent/CN2888751Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102571116A (en) * | 2010-12-31 | 2012-07-11 | 上海华勤通讯技术有限公司 | Full-duplex wireless microphone system |
| CN103152081A (en) * | 2013-03-15 | 2013-06-12 | 青岛歌尔声学科技有限公司 | Bluetooth device |
| CN103152081B (en) * | 2013-03-15 | 2015-07-29 | 青岛歌尔声学科技有限公司 | A kind of bluetooth equipment |
| CN103368614A (en) * | 2013-06-21 | 2013-10-23 | 深圳市力同亚太科技有限公司 | Audio transmitting method, audio receiving method, transmitting device and receiving device |
| CN103402151A (en) * | 2013-08-16 | 2013-11-20 | 大连新天地物联网科技有限公司 | Portable microphone with electric power supplied by voice vibration |
| WO2016011941A1 (en) * | 2014-07-24 | 2016-01-28 | 绵阳声赛耳科技有限公司 | Wireless amplification equipment |
| CN105363127A (en) * | 2015-12-01 | 2016-03-02 | 杭州承诺医疗科技有限公司 | Sacral nerve stimulation generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070411 |