CN103957055A - Receiving device of wireless audio system and wireless audio system - Google Patents
Receiving device of wireless audio system and wireless audio system Download PDFInfo
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- CN103957055A CN103957055A CN201410227361.XA CN201410227361A CN103957055A CN 103957055 A CN103957055 A CN 103957055A CN 201410227361 A CN201410227361 A CN 201410227361A CN 103957055 A CN103957055 A CN 103957055A
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Abstract
The invention relates to a receiving device of a wireless audio system and the wireless audio system. The receiving device comprises an optical wave receiving module, a digital decoding module, a sound channel decoding module, a serial/parallel register and an audio decoding module. Optical wave signals are used as a carrier to achieve wireless transmission and remote control of the audio signals, a multi-sound-channel alternating transmission method is used for transmitting the audio signals comprising a plurality of sound channels to a loudspeaker in an alternating mode, sound synchronization and high-fidelity restoring are achieved, small bandwidth is occupied, and wireless network resources are effectively saved.
Description
Technical field
The present invention relates to wireless data transmission technology field, particularly a kind of receiving system of wireless sound system and wireless sound system.
Background technology
Along with the development of technology, the injury that the electromagnetic radiation that wireless data transmission technology now produces causes human body, this is medically being finalized.And rationally utilize light wave to realize wireless transmission, not only can significantly increase transmission bandwidth, because light wave is easily blocked and good reflection characteristic, so, to human body, can there is not radiation injury, light wave communication is described as the wireless communication technology of " clean and environmental protection ".And how to utilize light wave to carry out audio signal communication, to realize the wireless transmission of sound and to control, be to need at present a technical barrier of solution.
Summary of the invention
Main purpose of the present invention is, a kind of receiving system and wireless sound system of wireless sound system is provided, and can carry out transmission of audio signal by lightwave signal, realizes remote playing and the controlled in wireless of audio signal.
The invention provides a kind of receiving system of wireless sound system, for receiving lightwave signal and being converted to monophonic audio signal, described receiving system comprises:
Light wave receiver module, for receiving described lightwave signal and converting pulse signal to;
Digital decoding module, for described pulse signal is converted to serial data signal, in each serial data packet, all comprise a plurality of monaural voice data of arranging by predefined procedure, and in each monophonic sound sound data, the sound channel code corresponding with this sound channel is all set;
Sound channel decoding module, for the sound channel code of each voice data and default sound channel address code are compared, if described sound channel code is identical with sound channel address code, exports described voice data, otherwise, abandon described voice data;
Serial/parallel register, for being converted to parallel data by described voice data;
Audio decoder module, for converting described voice data to audio signal.
In above-mentioned receiving system, described receiving system also comprises micro treatment module and constant-current driven module, in described serial data signal, comprise control data, described digital decoding module is separated described control data from described serial data signal, and input in described constant-current drive circuit, to control the output current of constant-current drive circuit.
In above-mentioned receiving system, described sound channel decoding module further comprises: serial/parallel buffer circuit, comparator, coding switch circuit and electronic switching circuit, described serial/parallel buffer circuit carries out serial/parallel conversion by described sound channel code, and be together input in described comparator and compare with the sound channel address code in described coding switch circuit, simultaneously, described voice data is inputted to described electronic switching circuit, if described sound channel code is identical with sound channel address code, described comparator is exported a high level, open described electronic switching circuit, described serial data is exported by described electronic switching circuit, and be converted to parallel data by described serial/parallel register, otherwise described comparator is exported a low level, described electronic switch cuts out, and described serial data is abandoned.
In above-mentioned receiving system, in described coding switch circuit, prestore two sound channel address codes, if in two sound channel address codes of described sound channel code and this is identical, described comparator is exported a high level, open described electronic switching circuit, described serial data is exported by described electronic switching circuit, and is converted to parallel data by described serial/parallel register; Otherwise described comparator is exported a low level, described electronic switch cuts out, and described serial data is abandoned.
In above-mentioned receiving system, described digital decoding module comprises multi-channel switch circuit, sound channel encoder and error correction/synchronous circuit, and described multi-channel switch circuit is for selecting certain voice data; In described sound channel encoder, be preset with a plurality of described sound channel codes, and in described voice data, insert corresponding sound channel code; Described error correction/synchronous circuit, for inserting error correction information at described voice data, inserts synchronizing information in described control data.
The present invention also provides a kind of wireless sound system, comprise an emitter and at least one receiving system, described emitter is converted to lightwave signal by audio signal, and described receiving system is above-mentioned receiving system, for receiving described lightwave signal and being converted to described audio signal.
In above-mentioned wireless sound system, also comprise light modules and loudspeaker module, described audio signal comprises controls data and voice data, the separated described control data of described receiving system and voice data, and described control data are inputted to described light modules, so that described light modules is controlled, simultaneously, after being converted to audio signal, described voice data inputs described loudspeaker module, to play sound.
In above-mentioned wireless sound system, described loudspeaker module comprises a plurality of mono speakers, described voice data is the voice data that comprises that a plurality of sound channels mix, described receiving system is also for inputting respectively described loudspeaker module by the voice signal of described a plurality of sound channels, makes mono speaker described in each only play the sound of particular channel.
The present invention adopts lightwave signal as carrier, to realize wireless transmission and the Long-distance Control of audio signal, utilize the method that multichannel alternately transmits that the audio signal that comprises a plurality of sound channels is alternately transferred in loud speaker simultaneously, the synchronous of sound and high-fidelity reduction have not only been realized, and take less bandwidth, effectively saved wireless network resource.
Accompanying drawing explanation
Fig. 1 is the structural representation of receiving system in the embodiment of the present invention.
Fig. 2 is the structural representation of sound channel decoding module in the embodiment of the present invention.
Fig. 3 is the structural representation of wireless sound system in the embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Below with reference to drawings and the specific embodiments, describe technical scheme of the present invention in detail, so as clearer, understand invention essence of the present invention intuitively.
Shown in Fig. 1, the present embodiment provides a kind of receiving system for wireless sound system, and this wireless sound system is for converting audio signal lightwave signal to and carry out wireless transmission and radio play.Receiving system is used for receiving this lightwave signal and is converted to monophonic audio signal, and the receiving system of the present embodiment comprises:
Light wave receiver module 10, for receiving above-mentioned lightwave signal and converting pulse signal to;
Digital decoding module 20, for just described pulse signal, be converted to serial data signal, in each serial data packet, all comprise a plurality of monaural voice data of arranging by predefined procedure, and in each monophonic sound sound data, the sound channel code corresponding with this sound channel is all set;
Sound channel decoding module 30, for the sound channel code of each voice data and default sound channel address code are compared, if sound channel code is identical with sound channel address code, exports this voice data, otherwise, abandon this serial data;
Serial/parallel register 40, for being converted to parallel data by tut data;
Audio decoder module 50, for converting above-mentioned parallel data to monaural audio signal.
This light wave receiver module 10 can adopt light-sensitive element, by opto-electronic conversion, this lightwave signal is converted to pulse signal, the content that this pulse signal contains above-mentioned audio signal.
The present embodiment also can arrange pulse amplification module 60, for this pulse signal is amplified to processing, and be input in digital decoding module 20, by this digital decoding module 20, this pulse signal is converted to serial data signal, realize the conversion to digital signal by analog signal.
In the process of conversion, because this serial data signal comprises a plurality of serial data packet, in each serial data packet, all comprise a plurality of monaural voice datas, this digital decoding module 20 is also for being arranged in order these monaural voice datas in a certain order, for example, can the voice data of 5.1 sound channels be arranged according to the order of R, L, C, SR, SL, BASS and SC.
In order to be convenient in the post-processed of signal, the voice data of different sound channels is identified, the present embodiment also arranges the sound channel code corresponding with sound channel in each voice data, the present embodiment adopts and before each voice data, inserts a sound channel code, the rule of correspondence of sound channel code and sound channel can be self-defined, for example, adopt the rule of correspondence of following table:
| Code | Definition | Code | Definition |
| 000 | Broadcast mode | 101 | Rearmounted R channel (SR) |
| 001 | Preposition R channel (R) | 110 | Rearmounted L channel (SL) |
| 010 | Preposition L channel (L) | 100 | Supper bass sound channel (BASS) |
| 011 | Preposition center channel (C) | 111 | Rearmounted center channel (SC) or user's definition |
Insert after sound channel code, the form of each serial data is (take preposition R channel as example):
Then, digital decoding module 20 is inputted this serial data signal in one sound channel decoding module 30, so that above-mentioned sound channel code and default sound channel address code are compared, the physical address code that this sound channel address code can be sound channel decoding module 30 can be also the address code of the receiving system 1 of the present embodiment.If sound channel code is identical with sound channel address code, export this serial data, otherwise, the voice data of this serial is abandoned.
Shown in Fig. 2, sound channel decoding module 30 comprises serial/parallel buffer circuit 301, comparator 302, coding switch circuit 303 and electronic switching circuit 304, wherein, serial/parallel buffer circuit 301 is for carrying out serial/parallel conversion by above-mentioned sound channel code, then be input in comparator 302, sound channel address in itself and coding switch circuit 303 is compared, simultaneously, the voice data of serial is inputted to above-mentioned electronic switching circuit 304, if sound channel code is identical with sound channel address, comparator 302 is exported high level, open electronic switching circuit 304, the voice data of above-mentioned serial outputs to serial/parallel register 40 by this electronic switching circuit 304, by this serial/parallel register 40, be converted to parallel data, otherwise, when sound channel code is different from sound channel address, show that this voice data does not mate with the receiving system 1 that receives this information, abandons this voice data.
In addition, the present embodiment also comprises micro treatment module 70 and constant-current driven module 80, in audio signal, comprise while controlling data, digital decoding module 20 is separated these control data from serial data, and be entered in above-mentioned constant-current drive circuit 80, control the output current of this constant-current drive circuit 80.If this electric current is used for driving light or loudspeaker, affected is light and volume, thereby by the reduction to control signal, realizes the brightness of light, color, colour temperature and volume etc. are controlled.
The digital decoding module 20 of the present embodiment also for, in each serial data, insert one and control data and synchronizing information, make each serial data comprise successively a synchronizing information, control data, a sound channel code and a voice data, now, the form of each serial data is:
Wherein, control data and synchronizing information and belong to control signal, sound channel code and voice data belong to serial data signal.When receiving synchronizing signal, represent that control signal is complete, otherwise, thinking that control signal is imperfect, need be abandoned, in order not to make any any mistakes.
The receiving system 1 of the present embodiment also comprises time-base circuit 90 and power amplifier 100, and time-base circuit 90 is used to digital decoding module 20 and audio decoder module 50 etc. that clock sync signal is provided, and makes each module synchronous coordination work.100 of this power amplifiers amplify processing for the simulated audio signal that audio decoder module 50 is converted to, and are then input to loud speaker and play.
Shown in Fig. 3, the present embodiment also provides a kind of wireless sound system 200, it comprises emitter 210 and receiving system 220, wherein, the receiving system 220 of the present embodiment is the receiving system in embodiment illustrated in fig. 1, this receiving system 220, for by reception lightwave signal and be converted to audio signal, is realized the wireless transmission of audio signal.
Particularly, the wireless sound system 200 of the present embodiment also comprises light modules 230 and loudspeaker module 240, when above-mentioned audio signal comprises control signal and voice signal, this receiving system 220 can be used for separated this control signal and voice signal output respectively, control signal is used for inputting light modules 230, control bright dark, colour temperature, switch and the color etc. of light modules 230, to produce the effect of shadow of various needs.Voice signal is input in loudspeaker module 240, by loudspeaker module 240, audio signal is converted to sound, can play music or other sound.
In addition, the loudspeaker module 240 of the present embodiment comprises a plurality of mono speakers, for example, comprises that R(is right), L(is left), C(center), SR(rear right), SL(rear left) and/or BASS(supper bass) these 6 loud speakers.When voice signal is while comprising the voice signal that a plurality of sound channels mix, this receiving system 220 is also input to respectively above-mentioned mono speaker for the voice signal that this is comprised to a plurality of sound channels, make each mono speaker only play the sound of the particular channel corresponding with it, thereby reach the acoustics of 5.1 sound channels.
In sum, the present invention adopts lightwave signal as carrier, to realize wireless transmission and the Long-distance Control of audio signal, utilize the method that multichannel alternately transmits that the audio signal that comprises a plurality of sound channels is alternately transferred in loud speaker simultaneously, the synchronous of sound and high-fidelity reduction have not only been realized, and take less bandwidth, effectively saved wireless network resource.
The foregoing is only the preferred embodiments of the present invention; not thereby limit its scope of the claims; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; directly or indirectly be used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. a receiving system for wireless sound system, for receiving lightwave signal and being converted to monaural audio signal, is characterized in that, described receiving system comprises:
Light wave receiver module, for receiving described lightwave signal and converting pulse signal to;
Digital decoding module, for described pulse signal is converted to serial data signal, in each serial data packet, all comprise a plurality of monaural voice data of arranging by predefined procedure, and in each monophonic sound sound data, the sound channel code corresponding with this sound channel is all set;
Sound channel decoding module, for the sound channel code of each voice data and default sound channel address code are compared, if described sound channel code is identical with sound channel address code, exports described voice data, otherwise, abandon described voice data;
Serial/parallel register, for being converted to parallel data by described voice data;
Audio decoder module, for converting described parallel data to monaural audio signal.
2. receiving system as claimed in claim 1, it is characterized in that, described receiving system also comprises micro treatment module and constant-current driven module, in described serial data signal, comprise control data, described digital decoding module is separated described control data from described serial data signal, and input in described constant-current drive circuit, to control the output current of constant-current drive circuit.
3. receiving system as claimed in claim 1, it is characterized in that, described sound channel decoding module further comprises: serial/parallel buffer circuit, comparator, coding switch circuit and electronic switching circuit, described serial/parallel buffer circuit carries out serial/parallel conversion by described sound channel code, and be together input in described comparator and compare with the sound channel address code in described coding switch circuit, simultaneously, described voice data is inputted to described electronic switching circuit, if described sound channel code is identical with sound channel address code, described comparator is exported a high level, open described electronic switching circuit, described serial data is exported by described electronic switching circuit, and be converted to parallel data by described serial/parallel register, otherwise described comparator is exported a low level, described electronic switch cuts out, and described serial data is abandoned.
4. receiving system as claimed in claim 3, it is characterized in that, in described coding switch circuit, prestore two sound channel address codes, if in two sound channel address codes of described sound channel code and this is identical, described comparator is exported a high level, open described electronic switching circuit, described serial data is exported by described electronic switching circuit, and is converted to parallel data by described serial/parallel register; Otherwise described comparator is exported a low level, described electronic switch cuts out, and described serial data is abandoned.
5. receiving system as claimed in claim 2, is characterized in that, described digital decoding module comprises multi-channel switch circuit, sound channel encoder and error correction/synchronous circuit, and described multi-channel switch circuit is for selecting certain voice data; In described sound channel encoder, be preset with a plurality of described sound channel codes, and in described voice data, insert corresponding sound channel code; Described error correction/synchronous circuit, for inserting error correction information at described voice data, inserts synchronizing information in described control data.
6. a wireless sound system, comprise an emitter and at least one receiving system, it is characterized in that: described emitter is converted to lightwave signal by audio signal, described receiving system is the receiving system described in claim 1 ~ 5 any one, for receiving described lightwave signal and being converted to described audio signal.
7. wireless sound system as claimed in claim 6, it is characterized in that: also comprise light modules and loudspeaker module, described audio signal comprises controls data and voice data, the separated described control data of described receiving system and voice data, and described control data are inputted to described light modules, so that described light modules is controlled, simultaneously, after being converted to audio signal, described voice data inputs described loudspeaker module, to play sound.
8. wireless sound system as claimed in claim 7, it is characterized in that: described loudspeaker module comprises a plurality of mono speakers, described voice data is the voice data that comprises that a plurality of sound channels mix, described receiving system is also for inputting respectively described loudspeaker module by the voice signal of described a plurality of sound channels, makes mono speaker described in each only play the sound of particular channel.
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| CN201410227361.XA CN103957055A (en) | 2014-05-27 | 2014-05-27 | Receiving device of wireless audio system and wireless audio system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549015A (en) * | 2015-12-16 | 2016-05-04 | 胡清桂 | Group coding method for detection waves of automatic automobile braking system |
| CN107046442A (en) * | 2017-02-23 | 2017-08-15 | 电子科技大学 | A kind of HD Audio replay device based on visible light communication |
| CN113645540A (en) * | 2020-04-24 | 2021-11-12 | 矽统科技股份有限公司 | Digital audio array circuit |
| US11399250B2 (en) | 2020-04-24 | 2022-07-26 | Silicon Integrated Systems Corp. | Digital audio array circuit |
-
2014
- 2014-05-27 CN CN201410227361.XA patent/CN103957055A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549015A (en) * | 2015-12-16 | 2016-05-04 | 胡清桂 | Group coding method for detection waves of automatic automobile braking system |
| CN107046442A (en) * | 2017-02-23 | 2017-08-15 | 电子科技大学 | A kind of HD Audio replay device based on visible light communication |
| CN113645540A (en) * | 2020-04-24 | 2021-11-12 | 矽统科技股份有限公司 | Digital audio array circuit |
| US11399250B2 (en) | 2020-04-24 | 2022-07-26 | Silicon Integrated Systems Corp. | Digital audio array circuit |
| CN113645540B (en) * | 2020-04-24 | 2022-11-08 | 矽统科技股份有限公司 | Digital audio array circuit |
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