CN102708914A - Portable high-fidelity audio transmission device and system based on WIFI (Wireless Fidelity) - Google Patents
Portable high-fidelity audio transmission device and system based on WIFI (Wireless Fidelity) Download PDFInfo
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- CN102708914A CN102708914A CN2012101821092A CN201210182109A CN102708914A CN 102708914 A CN102708914 A CN 102708914A CN 2012101821092 A CN2012101821092 A CN 2012101821092A CN 201210182109 A CN201210182109 A CN 201210182109A CN 102708914 A CN102708914 A CN 102708914A
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Abstract
The invention provides portable high-fidelity audio transmission device and system based on WIFI (Wireless Fidelity). The device comprises a control module and a radio frequency module, a program storage unit, an RAM (Random Access Memory) unit and an interface module respectively connected with the control module and an audio conversion module connected with the interface module. With the portable high-fidelity audio transmission device based on WIFI provided by the invention, a received audio signal is processed by a processor, the processing result is sent to an audio decoder, the audio decoder processes the processing result and outputs an analog signal to be played by terminal equipment in high fidelity. In the invention, the output of high-fidelity audio signals on mobile equipment can be realized; and meanwhile, audio data can be sent back to the mobile equipment to complete the recording and storage process. The device has the advantages of simple structure, convenience, practicability and the like.
Description
Technical field
The present invention relates to stereo set, relate in particular to a kind of portable audio transmitting device and system that carries out audio transmission through WIFI.
Background technology
Improving constantly of Along with people's living standard, mobile intelligent terminal equipment as: smart mobile phone, notebook computer, panel computer etc. have progressed in each family, and people can experience amusements such as online, music, video through mobile device.
And people's amusement, an important component part is to listen to music.In listening to the process of music; Though above-mentioned mobile intelligent terminal equipment can be used to receive and playing back music, satisfies the requirement of people to the appreciation of music, still; Be not only the audiophile; Increasing listener has not satisfied simple music, and they more hope to hear professional high-fidelity audio.Therefore, part family buys professional stereo set, can enjoy high-quality music at home.
But, for ordinary consumer, buy professional stereo set on the one hand, need the no small spending of cost; On the other hand, this professional stereo set, usually volume ratio is bigger, is not easy to often move, and brings certain constant to the user.
For this reason, need a kind of portable equipment of design badly, play so that carry out the high-fidelity of audio frequency, for people provide high-quality voice playing effect.
Summary of the invention
Primary and foremost purpose of the present invention is to provide a kind of portable newspaper fidelity audio transmission device based on WIFI, and this device can be convenient to Hi-Fi audio signal harmless lost territory transmission to realize to export Hi-Fi audio signal on portable terminal or other playback equipment.
Another object of the present invention is to provide a kind of portable HD Audio transmission system, have simple in structurely, be easy to realize, be convenient to carry out the relay of voice data based on WIFI, convenient and practical.
For achieving the above object, the objective of the invention is to realize through following technical scheme.
A kind of portable HD Audio transmitting device based on WIFI comprises: control module and the radio-frequency module that links to each other with control module respectively, program storage unit (PSU), memory ram unit, interface module, and the audio conversion module that links to each other with interface module;
Radio-frequency module is used for converting its radiofrequency signal that receives into baseband signal, and this baseband signal is transferred to control module;
Control module is used to dock the as received basis band signal to be handled, and result is transferred to audio conversion module through interface module;
Audio conversion module is used for converting the digital audio and video signals that receives into simulated audio signal;
Program storage unit (PSU) is used for the storage system source program and supplies control module to call the guidance system startup;
The memory ram unit is used to control module the program run space is provided.
Preferably, said audio conversion module also is used to receive the simulated audio signal of user's input, and is transferred to control module after converting this simulated audio signal into digital audio and video signals.
Preferably, said control module also is used to receive the digital audio and video signals that audio conversion module transmits, and this digital audio and video signals is carried out converting baseband signal into after the dissection process is transferred to radio-frequency module.
Preferably, said interface module comprises: usb data interface, power interface and digital audio interface, connect power subsystem through power interface in the interface module, and be used for the power supply supply being provided to said audio transmission device.
Preferably; Said power subsystem comprises: the battery management system that is connected with USB port; Battery is connected between battery management system and the ground; The output of battery links to each other with the input end of DC/DC supply convertor through battery management system again, and the total system of exporting to of DC/DC supply convertor provides the power supply supply.
Preferably, also comprise the Ethernet expansion connection module that links to each other with said control module, be used for the renewal of system firmware, realize and extraneous wired connection.
Preferably, also comprise the encrypting module that links to each other with said control module, be used for system data is carried out encryption.
Preferably, said interface module also comprises the user's expansion interface that is used for user's expanded function.
Preferably, said radio-frequency module is supported WiFi and Bluetooth transmission function.
A kind of aforesaid portable HD Audio transmission system based on WIFI; Comprise intelligent terminal, playback equipment; Said intelligent terminal and said audio transmission device are set up wireless connections through the WIFI network, and said playback equipment is connected through audio conversion module with said audio transmission device.
The present invention compared with prior art; Beneficial effect is: the portable HD Audio transmitting device based on WIFI provided by the invention; To receive sound signal through after the processor processes; Result is sent into audio decoder, handle back output simulating signal by audio decoder and carry out the hi-fi music broadcast to terminal device.The present invention can realize exporting on the mobile device Hi-Fi audio signal; Simultaneously, also can voice data be returned to mobile device, accomplish and record and storing process.Have advantages such as simple in structure, convenient and practical.
Description of drawings
Fig. 1 is an audio transmission device theory diagram of the present invention.
Fig. 2 is control module cut-away view in the audio transmission device of the present invention.
Fig. 3 is an audio transmission device power subsystem circuit diagram of the present invention.
Fig. 4 is an audio transmission system theory diagram of the present invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
See also shown in Figure 1; The present invention is based on the portable audio transmitting device of WIFI, comprising: control module 4 and the radio-frequency module 2 that links to each other with control module 4 respectively, Ethernet expansion connection module 3, program storage unit (PSU) 5, memory ram unit 6, encrypting module 7, interface module 8.
Radio-frequency module 2 is used for converting its radiofrequency signal that receives into baseband signal, and this baseband signal is transferred to control module 4.Adopt SDIO (Secure Digital Input and Output Card) interface at a high speed in this module and being connected of control module; SDIO is a kind of Peripheral Interface that on the SD standard, defines; The signal transfer mode of SDIO has three kinds of SPI, 1-bit, 4-bit; Wherein the 4-bit mode speed is the fastest, and the present invention adopts the 4-bit pattern, to satisfy the high speed requirement of HD Audio transmission.Comprise WiFi module and bluetooth module in this radio-frequency module, it supports IEEE 802.11b/g/n agreement; Emissive power is+12.5dBm ~+20dBm, receiving sensitivity-89dBm ~-73dBm.
Control module 4 is used to dock the as received basis band signal to be handled, and result is transferred to audio conversion module 10 through interface module 8.Audio conversion module 10 is used for converting the digital audio and video signals that receives into simulated audio signal and carries out music through playback equipment.
Control module 4 also is used to receive the digital audio and video signals that audio conversion module 10 transmits; And after this digital audio and video signals carried out converting into after the dissection process baseband signal and is transferred to radio-frequency module 2 and modulates; Data layout with certain agreement sends intelligent terminal (smart mobile phone, notebook computer, panel computer iPad etc.) to through the WiFI wireless network; Intelligent terminal is noted this voice data, to realize the sound-recording function of audio frequency.
See also shown in Figure 2; The control module cut-away view; Comprise: RACS, ARM subsystem, DSP subsystem and peripheral system resource, wherein the peripheral system resource mainly comprises DMA, audio frequency and video port, serial line interface (IIC, SPI, UART, McASP, McBSP), LCD control interface, general parallel port (uPP), 128KB RAM, timer, USB controller, SATA interface, 10/100M b/s EMAC, MDIO interface, Flash and MDDR interface etc.After system's operation; At first the operation authority is carried out verification; Verification begins the initialization related linear program through back ARM subsystem, starts related service, like: TCP service main thread, play sub-thread, UDP serves sub-thread, the sub-thread of button, the sub-thread of serial ports, the sub-thread of heartbeat etc.Under play mode; The signal that the WIFI module is sent here enters into the inside of control module through the MDIO interface, and the ARM subsystem carries out decoding processing to signal, simultaneously separating audio signals and control signal; Isolate digital audio and video signals after decoding; And then digital audio and video signals sent into carry out Audio Processing in the DSP subsystem, the voice data after the processing is exported to the external audio converting unit through the McASP port again, finally realizes voice playing.Under recording mode; Analogue audio frequency after the external audio converting unit will be gathered converts DAB to; Send the Audio Processing of carrying out specialty in the inner DSP subsystem to through the McASP port; Sound signal after the Audio Processing of in the DSP subsystem, carrying out specialty is handled is given the ARM subsystem again and is encoded, and the ARM subsystem also is responsible for coded audio and control signal are handled together, and the MDIO interface through control module sends the WIFI module to and sends again.In modules such as the DMA of The whole control inside modules, IIC, SPI, UART, USB is the peripheral hardware and the interface of assisting ARM subsystem and the operation of DSP subsystem.
Program storage unit (PSU) 5 is used for the storage system source program and supplies control module to call the guidance system startup, and carries out encryption through 7 pairs of systems of encrypting module.Simultaneously also can be through upgrading to the local media playback equipment after the update system program, this moment, media content can be stored in the storer of this unit.
Memory ram unit 6 is used to control module 4 the program run space is provided.
Ethernet expansion connection module 3 is used for the renewal of system firmware, also can realize the function expansion of native system simultaneously, realizes the expanded application of wired connection.
Interface module 8 comprises: usb data interface, power interface, digital audio interface and user's expansion interface, connect power subsystem 9 through interface module 8 power interfaces, and be used for the power supply supply being provided to audio transmission device of the present invention.Power subsystem 9 comprises: the DC/DC supply convertor, battery management system, the rechargeable battery that connect successively, the other end ground connection of rechargeable battery.
As shown in Figure 3, audio transmission device power subsystem circuit diagram of the present invention is connected to power subsystem 9 through USB port; Detect and control through inner; Export to rechargeable battery, the state of power subsystem 9 monitoring rechargeable batteries simultaneously is in case the corresponding protection action occurs making when unusual.And information passed to control module 4, realize the purpose of charging and discharging monitoring.The output of rechargeable battery is again as the input of the multichannel DC/DC supply convertor of battery management system in the power subsystem 9, realizes multi-power supply of the present invention system.Equally, the work state information of power supply also passes to control module 4, realizes the purpose of power conversion monitoring.
User's expansion interface is the functional interface that system keeps for the user, is in order to satisfy different product, and different clients' demand is waited for like state indication, input and output button, also can be more complicated control system etc.
Audio transmission device provided by the invention has following function:
Compatible IEEE 802.11b/g/n agreement;
Support many speed rates, promptly under the situation that does not influence the music quality, in different wireless environment automatic switchover message transmission rates;
Support the either-way operation of intelligent terminal and this mancarried device, promptly support audio file to receive and the audio coding emission;
The highest support high-fidelity 192K sampled audio data transmission;
Support multiple audio format, can carry out encoding and decoding multiple several audio files (like mp3, wav, wma, aac, flac, ape);
Support multiple man-machine interface, like keyboard, LCD display, touch-screen etc.;
Support multiple storage medium, like SD card, USB flash disk etc.;
Support SymbianOS, WindowsCE and (SuSE) Linux OS, promptly make things convenient for software transplanting;
Support ICP/IP protocol;
Support the WiFI wireless network management, have encryption function.
As shown in Figure 4, be audio transmission system theory diagram of the present invention, the intelligent terminal 1 with WIFI function is set up wireless connections through WIFI network and audio transmission device of the present invention, accomplishes the transmitted in both directions and the control of audio frequency, and plays through playback equipment.The present invention is the basis with autonomous home control network communication protocol, and the functions such as broadcast, storage, control and processing of remote media are provided, and realizes the possibility of multi-functional voice applications.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. portable HD Audio transmitting device based on WIFI; It is characterized in that; Comprise: control module and the radio-frequency module that links to each other with control module respectively, program storage unit (PSU), memory ram unit, interface module, and the audio conversion module that links to each other with interface module;
Radio-frequency module is used for converting its radiofrequency signal that receives into baseband signal, and this baseband signal is transferred to control module;
Control module is used to dock the as received basis band signal to be handled, and result is transferred to audio conversion module through interface module;
Audio conversion module is used for converting the digital audio and video signals that receives into simulated audio signal;
Program storage unit (PSU) is used for the storage system source program and supplies control module to call the guidance system startup;
The memory ram unit is used to control module the program run space is provided.
2. the portable HD Audio transmitting device based on WIFI as claimed in claim 1; It is characterized in that; Said audio conversion module also is used to receive the simulated audio signal of user's input, and is transferred to control module after converting this simulated audio signal into digital audio and video signals.
3. the portable HD Audio transmitting device based on WIFI as claimed in claim 2; It is characterized in that; Said control module also is used to receive the digital audio and video signals that audio conversion module transmits, and this digital audio and video signals is carried out converting baseband signal into after the dissection process is transferred to radio-frequency module.
4. the portable HD Audio transmitting device based on WIFI as claimed in claim 1; It is characterized in that; Said interface module comprises: usb data interface, power interface and digital audio interface; Connect power subsystem through power interface in the interface module, be used for the power supply supply being provided said audio transmission device.
5. the portable HD Audio transmitting device based on WIFI as claimed in claim 4; It is characterized in that; Said power subsystem comprises: the battery management system that is connected with USB port; Battery is connected between battery management system and the ground, and the output of battery links to each other with the input end of DC/DC supply convertor through battery management system again, and the total system of exporting to of DC/DC supply convertor provides the power supply supply.
6. the portable HD Audio transmitting device based on WIFI as claimed in claim 1 is characterized in that, also comprises the Ethernet expansion connection module that links to each other with said control module, is used for the renewal of system firmware, realizes and extraneous wired connection.
7. the portable HD Audio transmitting device based on WIFI as claimed in claim 1 is characterized in that, also comprises the encrypting module that links to each other with said control module, is used for system data is carried out encryption.
8. the portable HD Audio transmitting device based on WIFI as claimed in claim 4 is characterized in that said interface module also comprises the user's expansion interface that is used for user's expanded function.
9. the portable HD Audio transmitting device based on WIFI as claimed in claim 1 is characterized in that, said radio-frequency module is supported WiFi and Bluetooth transmission function.
10. one kind like each described portable HD Audio transmission system based on WIFI of claim 1-9; It is characterized in that; Comprise intelligent terminal, playback equipment; Said intelligent terminal and said audio transmission device are set up wireless connections through the WIFI network, and said playback equipment is connected through audio conversion module with said audio transmission device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101821092A CN102708914A (en) | 2012-06-05 | 2012-06-05 | Portable high-fidelity audio transmission device and system based on WIFI (Wireless Fidelity) |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101821092A CN102708914A (en) | 2012-06-05 | 2012-06-05 | Portable high-fidelity audio transmission device and system based on WIFI (Wireless Fidelity) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680966A (en) * | 2016-04-08 | 2016-06-15 | 陈立新 | Network radio device capable of accessing wireless network |
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| CN1835576A (en) * | 2006-03-27 | 2006-09-20 | 深圳亿道科技有限公司 | System and method of adopting radio transmitting way to display demonstration content |
| US20090176529A1 (en) * | 2006-07-05 | 2009-07-09 | Warren Robert W | Systems and methods for mobile data storage and acquisition |
| CN201868109U (en) * | 2010-10-21 | 2011-06-15 | 深圳市江波龙电子有限公司 | Digital audio player |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1835576A (en) * | 2006-03-27 | 2006-09-20 | 深圳亿道科技有限公司 | System and method of adopting radio transmitting way to display demonstration content |
| US20090176529A1 (en) * | 2006-07-05 | 2009-07-09 | Warren Robert W | Systems and methods for mobile data storage and acquisition |
| CN201868109U (en) * | 2010-10-21 | 2011-06-15 | 深圳市江波龙电子有限公司 | Digital audio player |
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| CN105680966A (en) * | 2016-04-08 | 2016-06-15 | 陈立新 | Network radio device capable of accessing wireless network |
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Application publication date: 20121003 |