CN2805232Y - Radio audio signal transmission device - Google Patents
Radio audio signal transmission device Download PDFInfo
- Publication number
- CN2805232Y CN2805232Y CN 200520005098 CN200520005098U CN2805232Y CN 2805232 Y CN2805232 Y CN 2805232Y CN 200520005098 CN200520005098 CN 200520005098 CN 200520005098 U CN200520005098 U CN 200520005098U CN 2805232 Y CN2805232 Y CN 2805232Y
- Authority
- CN
- China
- Prior art keywords
- audio signal
- signal
- wireless
- bluetooth
- processing unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a wireless audio signal transmission device which can convert audio signals into wireless Bluetooth signals. The wireless audio signal transmission device comprises an analog to digital converter which can convert input analog audio signals into digital signals. The digital signals are converted into original signals of the Bluetooth communication protocol by a central processing unit, and then, a Bluetooth base frequency signal processing unit processes base frequency signals. The base frequency signals are converted into radio frequency signals through a Bluetooth radio frequency processing unit, and finally, the radio frequency signals are transmitted to the outside world through an antenna in the wireless microwave manner.
Description
Technical field
The utility model is about a kind of radio multimedium audio signal conveyer, particularly about a kind of use bluetooth (Bluetooth) wireless transmission protocol and can convert audio signals the conveyer of (audio signal).
Background technology
A kind of bluetooth transmitters that is applicable to computer universal serial bus (USB:Universal SeriesBus) interface is arranged at present on the market, this reflector can be sent to the bluetooth earphone end with wireless mode with the digital music of personal computer or notebook computer broadcast, and so the user of headband bluetooth earphone just can be in the melodious music of long-range enjoyment.Yet this kind reflector only can be applicable to player or the computer with USB interface, for general electrical home appliances and inapplicable, for example: and TV, videodisc player or sound equipment, so cause the use can't be general.
In addition, also have a kind of wireless audio signal reflector that is used for TV or sound equipment, this wireless audio signal reflector is to use frequency modulation (Frequency modulation; FM) technology is perhaps utilized the audio signal after infrared transmission is changed.Because FM signal is subjected to noise jamming easily, and infrared signal can't penetrate obstacle, so the use of this kind conventional wireless audio signal reflector still is very limited, and quality is not fine.On the other hand, receiver or earphone also must be adjusted to specific operating frequency, or only can receive the infrared ray of specific wavelength, can't exchange use arbitrarily with other connatural receive-transmit system so also cause.
In sum, need badly on the market and want the good and jamproof multimedia audio signal transmitter of a kind of interchangeability, in order to do making the user can receive and obtain the audio signal of high tone quality widely.
Summary of the invention
The purpose of this utility model provides a kind of wireless audio signal conveyer, and it is that audio signal is converted to the wireless blue tooth signal, so can be widely used in generally having the device of audio signal output end.
Another purpose of the present utility model provides a kind of conveyer that uses the bluetooth communication standard, can transmit signal to any receiving system with bluetooth communication standard, not limited and correctly communication by the hardware differences of receiving system.
For achieving the above object, the utility model discloses a kind of wireless audio signal conveyer, audio signal can be converted to the wireless blue tooth signal.This wireless audio signal conveyer comprises an analog-digital converter, the simulated audio signal of input can be converted to digital signal.This digital signal transfers the primary signal of bluetooth communication agreement again to via a CPU, carry out fundamental frequency signal by bluetooth fundamental frequency (base band) signal processing unit then and handle.This bluetooth fundamental frequency signal can be converted to radio frequency (radiofrequency) signal through a Bluetooth RF processing unit, at last by antenna in the mode of wireless microwave to outside transmitting radio frequency signal.
Description of drawings
Fig. 1 is the schematic diagram of the application examples of wireless audio signal conveyer of the present utility model;
Fig. 2 is the functional block diagram of wireless audio signal conveyer of the present utility model;
Fig. 3 is the schematic diagram of the Another Application example of wireless audio signal conveyer of the present utility model.
The number in the figure explanation:
20 wireless audio signal conveyers
21 analog-digital converters, 22 CPU
23 bluetooth fundamental frequency signal processing units
24 Bluetooth RF processing units, 25 antennas
26 audio signal input holes, 27 battery pack
28 power lines, 50 connecting lines
60 players, 70 sound equipments
80,80 ' receiving system, 90 personal computers
Embodiment
The operation principle of bluetooth is with the wireless of a miniaturization and fundamental module chip, device is in a bluetooth wireless devices, use and need not apply for using license ISM (Industrial, Scientific, Medical) the 2.4GHz frequency range at place, and this 2.4GHz frequency range is divided into 79 different radio frequency channel, wherein the frequency range of each channel is 1MHz.For avoiding using the wireless device phase mutual interference of this frequency range, so solve with frequency-hopping spread spectrum (FHSS) technology of 1600 highly difficult frequency agility rates of per second.Add the secrecy technology of encryption, so Information Security is very high, its effective transmission speed is between 432Kbps～721Kbps, and effective propagation path is 10～100 meters.
Fig. 1 is the schematic diagram of the application examples of wireless audio signal conveyer of the present utility model.This wireless audio signal conveyer 20 is by the audio signal of a connecting line 50 input from sound equipment 70, and it has an audio signal input hole 26 and can insert for connecting line 50, and to change this audio signal be the wireless blue tooth signal.Accept this wireless blue tooth signal by receiving system 80, and be converted to sound wave and play-over out with bluetooth communication agreement.In addition, this wireless audio signal conveyer 20 can directly be supplied electric energy by battery pack 27 or power line 29, and can charge to battery pack 27 by power line 29.
Fig. 2 is the functional block diagram of wireless audio signal conveyer 20 of the present utility model.This wireless audio signal conveyer 20 comprises an analog-digital converter 21, and it can be converted to digital signal with the simulated audio signal of sound equipment 70 inputs, and this audio signal can be comprise auris dextra and left otoacoustic emission road stereo.Analog-digital converter 21 is to utilize pulse code modulation (Pulse Code Modulation; PCM) with simulated audio signal sampling and quantification, each pulse amplitude after will quantizing is at last represented with one group of binary digital code, so just finishes digitized work.
This digital signal is converted to the primary signal that meets the bluetooth communication agreement via a CPU 22 again, and then carries out fundamental frequency signal by bluetooth fundamental frequency (base band) signal processing unit 23 and handle.This bluetooth fundamental frequency signal can be converted to radiofrequency signal through a Bluetooth RF (radio frequency) processing unit 24 again, at last by antenna 25 with wireless microwave to mode external transmission signal.CPU 22 also can export digital signal to one universal asynchronous reception and conveyer (Universal AsynchronousReceiver Transmitter; UART), carry out transmission and the reception of serial data to the outside by universal asynchronous reception and conveyer at one time.The function of this CPU 22, bluetooth fundamental frequency signal processing unit 23 and Bluetooth RF processing unit 24 can be integrated in the single-chip again, so can reduce usage space.
Fig. 3 is the schematic diagram of the Another Application example of wireless audio signal conveyer of the present utility model.This wireless audio signal conveyer 20 is by the audio signal of a connecting line 50 input from personal computer 90, and to change this audio signal be the wireless blue tooth signal.Receiving system 80 by having the bluetooth communication standard ' accept this wireless blue tooth signal, and conversion echo signal and export player 60 to and play back frequently.
Technology contents of the present utility model and technical characterstic disclose as above, yet the personage who is familiar with this technology still may be based on teaching of the present utility model and announcement and done all replacement and modifications that does not deviate from the utility model spirit.Therefore, protection range of the present utility model should be not limited to those disclosed embodiments, and should comprise various do not deviate from replacement of the present utility model and modifications, and is contained by following claim.
Claims (7)
1. a wireless audio signal conveyer can be converted to audio signal the wireless blue tooth signal, it is characterized in that it comprises:
One analog-digital converter becomes a digital signal with this audio signal digitizing;
One CPU makes this digital signal be converted to the primary signal of bluetooth communication agreement;
One bluetooth fundamental frequency signal processing unit is converted to fundamental frequency signal with this primary signal;
One Bluetooth RF signal processing unit makes this fundamental frequency signal be converted to radiofrequency signal;
One antenna, in the mode of wireless microwave to this radiofrequency signal of external transmission.
2. wireless audio signal conveyer according to claim 1 is characterized in that it comprises an audio signal input hole in addition and can import for this audio signal.
3. wireless audio signal conveyer according to claim 1 is characterized in that this analog-digital converter is with pulse code modulation (Pulse Code Modulation; PCM) with this audio signal digitizing.
4. wireless audio signal conveyer according to claim 1 is characterized in that it comprises the battery pack that can supply electric energy in addition.
5. wireless audio signal conveyer according to claim 1 is characterized in that it comprises the power line that can be supplied electric energy by the outside in addition.
6. wireless audio signal conveyer according to claim 1, the function that it is characterized in that this CPU, bluetooth fundamental frequency signal processing unit and Bluetooth RF processing unit is to be integrated in the single-chip.
7. wireless audio signal conveyer according to claim 1 is characterized in that this audio signal can be comprise auris dextra and left otoacoustic emission road stereo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520005098 CN2805232Y (en) | 2005-03-02 | 2005-03-02 | Radio audio signal transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520005098 CN2805232Y (en) | 2005-03-02 | 2005-03-02 | Radio audio signal transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2805232Y true CN2805232Y (en) | 2006-08-09 |
Family
ID=36910515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520005098 Expired - Fee Related CN2805232Y (en) | 2005-03-02 | 2005-03-02 | Radio audio signal transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2805232Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011069376A1 (en) * | 2009-12-11 | 2011-06-16 | 中兴通讯股份有限公司 | Method and mobile terminal for playing audio |
| CN102723962A (en) * | 2012-05-17 | 2012-10-10 | 邹伟 | Bluetooth to 433M/315M wireless communication interface module |
| CN103186754A (en) * | 2011-12-30 | 2013-07-03 | 国民技术股份有限公司 | Method and device of multi-band frequency multi-protocol application expansion and card-reading device |
| CN105262727A (en) * | 2015-04-10 | 2016-01-20 | 威盛电子股份有限公司 | Information conversion device for converting sound wave information and bluetooth information |
| CN105653237A (en) * | 2016-02-01 | 2016-06-08 | 宇龙计算机通信科技(深圳)有限公司 | Audio playing control method and system and terminal |
| CN109429141A (en) * | 2017-08-28 | 2019-03-05 | 鸿富锦精密工业（深圳）有限公司 | Audio signal processor |
| CN110415404A (en) * | 2019-07-19 | 2019-11-05 | 佛山市拓拓网络科技有限公司 | A kind of mobile phone induction system of building gate inhibition |
-
2005
- 2005-03-02 CN CN 200520005098 patent/CN2805232Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011069376A1 (en) * | 2009-12-11 | 2011-06-16 | 中兴通讯股份有限公司 | Method and mobile terminal for playing audio |
| CN103186754A (en) * | 2011-12-30 | 2013-07-03 | 国民技术股份有限公司 | Method and device of multi-band frequency multi-protocol application expansion and card-reading device |
| CN102723962A (en) * | 2012-05-17 | 2012-10-10 | 邹伟 | Bluetooth to 433M/315M wireless communication interface module |
| CN105262727A (en) * | 2015-04-10 | 2016-01-20 | 威盛电子股份有限公司 | Information conversion device for converting sound wave information and bluetooth information |
| CN105653237A (en) * | 2016-02-01 | 2016-06-08 | 宇龙计算机通信科技(深圳)有限公司 | Audio playing control method and system and terminal |
| CN105653237B (en) * | 2016-02-01 | 2019-03-22 | 宇龙计算机通信科技(深圳)有限公司 | Audio play control method, audio broadcasting control system and terminal |
| CN109429141A (en) * | 2017-08-28 | 2019-03-05 | 鸿富锦精密工业（深圳）有限公司 | Audio signal processor |
| CN110415404A (en) * | 2019-07-19 | 2019-11-05 | 佛山市拓拓网络科技有限公司 | A kind of mobile phone induction system of building gate inhibition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2805232Y (en) | Radio audio signal transmission device | |
| US7818078B2 (en) | Interface device for wireless audio applications | |
| US6950681B2 (en) | Transmission of data by ultrasound | |
| CN101047408B (en) | Digital radio microphone system | |
| US20060019605A1 (en) | Wireless signal transfer by sound waves | |
| WO2006036330A3 (en) | Digital synthesis of communication signals | |
| JP2004229250A (en) | Pwm signal interface system | |
| KR20070102269A (en) | Radio frequency communication devices using chaotic signal and method thereof | |
| CN107257259A (en) | A kind of method that communication and data exchange are carried out using sound wave modulation technique | |
| CN108075837A (en) | Hexadecimal code, coding/decoding method and the device of ultrasonic communication | |
| CN101277158A (en) | Musical instrument wireless transmission system based on 2.4G wireless digital audio technique | |
| CN106506029A (en) | A kind of u piece of digital wireless audio transmission system and its transmission method | |
| CN202085306U (en) | Sound output device, sound equipment and sound system | |
| CN202444603U (en) | 2.4G S/PDIF (Sony/Philips Digital Interface) wireless earphone device of set-top box | |
| CN104868933A (en) | 5.8GHz frequency band-based audio transmitting and receiving device | |
| CN105246028A (en) | Wireless audio transmission system and method | |
| JP3117271U (en) | Wireless audio transmitter | |
| CN104980229A (en) | Method and device for communication through loudspeakers | |
| CN201248036Y (en) | Electronic equipment with emission function | |
| CN201349267Y (en) | Bidirectional intelligent wireless audio remote controller | |
| JP2003152821A (en) | Encoding and identification method and system in wireless transmission and reception protocol for single frequency wireless peripheral device | |
| CN207603896U (en) | A kind of Wireless sound card device | |
| CN201072863Y (en) | Frequency-modulation broadcast transmitter based on USB interface | |
| CN101816136B (en) | Method and apparatus for communicating sound wave of human body | |
| CN214795620U (en) | Four-channel 12GSaps arbitrary waveform generation module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |