CN2927511Y - Wireless audio-frequency transmitting adapter - Google Patents
Wireless audio-frequency transmitting adapter Download PDFInfo
- Publication number
- CN2927511Y CN2927511Y CN200620026806.9U CN200620026806U CN2927511Y CN 2927511 Y CN2927511 Y CN 2927511Y CN 200620026806 U CN200620026806 U CN 200620026806U CN 2927511 Y CN2927511 Y CN 2927511Y
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- 230000005540 biological transmission Effects 0.000 claims abstract description 37
- 230000005236 sound signal Effects 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000000060 site-specific infrared dichroism spectroscopy Methods 0.000 abstract description 3
- 230000004069 differentiation Effects 0.000 abstract description 2
- 230000003321 amplification Effects 0.000 abstract 1
- 230000036039 immunity Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 230000008054 signal transmission Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008029 eradication Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model relates to a wireless audio transmission adapter, which is characterized in that an A/D conversion module and an audio signal coding module are arranged on the transmitting circuit; an audio signal decoding module, a D/A conversion module and an amplification output module are arranged on the receiving circuit; the adapter realizes 100M wireless connection and wireless audio transmission using the WI-FI (802.11b) wireless transfer protocol. The utility model realizes wireless audio transmission with the WI-FI using digital signal transmission and working at 2.4GHZ, has high noise immunity and 100M (theoretical value) super-long transmission distance, can meet the need of lossless transmission of the audio signal. The utility model has simple structure and is easy to use; wireless connection can switch among a plurality of adapters using the SSID code differentiation, realizes the switching among a plurality of wireless terminals and achieves the one-computer multi-link function.
Description
Technical field
The utility model relates to a kind of wireless transmission adapter, particularly a kind of ANTENN AUDIO transmission adaptor.
Background technology
Along with the development of audio-visual technology, people constantly propose more highland requirement to high-quality audio-visual playback, not only require tonequality and picture perfect more, also require attractive in appearance, the fashion, simple and direct of the outward appearance of equipment own.
Traditional audio-visual devices, all need to use a large amount of connection cables to be connected with other ancillary equipment, because the limitation of equipment, so a large amount of RCA cables can make the general user be difficult to connect voluntarily, the operator must the reference product specification and is had certain professional knowledge, perhaps ask the professional to be provided with, therefore operation is comparatively loaded down with trivial details, and arrangement is difficulty comparatively.And a large amount of cables lays numerous and diverse in disorderly, influences the aesthetic property of equipment.Particularly the connection of equipment can be subjected to the limitation of length of cable, causes the inconvenience of application.Perhaps adopt infrared ray to carry out wireless transmission, but infrared ray is interfered easily, causes distortion, and for the higher audio signal of some bandwidth requirements, then transmission difficulty.
What traditional audio wireless transmission was used is ultrared mode, because infrared ray has the defective of inevitable anti-interference difference.The distortion of audio signal and the transmission of specified conditions have limitation.
The utility model content
The purpose of this utility model is to overcome above-mentioned weak point, provides a kind of connection simple, dependable performance, and breaks away from the ANTENN AUDIO transmission adaptor of cable constraint.
The technical scheme that the utility model adopted is for achieving the above object: a kind of ANTENN AUDIO transmission adaptor is characterized in that the radiating portion circuit is provided with A/D modular converter, audio-frequency signal coding module; The receiving unit circuit is provided with audio signal decoding module, D/A modular converter; Radiating portion is connected the wireless transmission of carrying out audio frequency with receiving unit by Wi-Fi 802.11b wireless transmission protocol.
Specifically:
1. the A/D of audio signal conversion
Because the transfer of data of Wi-Fi must be digital signal, so must the analog signal of audio frequency be changed with certain sample frequency.
2. the coding of digital audio and video signals
Because audio signal is carried out having obtained original digital signal after the A/D conversion, but owing to improve the efficient of transmission, again must be to the encoding digital signals that obtains, transmission again.
3. the transmission of wireless data
The wireless transmission protocol of use standard 802.11b carries out the transmission of data.
4. receiving terminal is decoded, and the reduction audio signal.
5. be the digital signal of process coding owing to what receive, therefore will expect that the audio frequency after the reduction must carry out decode procedure to the digital signal that receives, amplify later on then and export from transmitting terminal.
The beneficial effects of the utility model are: it is simple in structure, easy to use, and wireless connections can be switched by the differentiation of SSID number between a plurality of adapters.Be implemented between a plurality of wireless terminals and switch, reach the multi-joint function of a machine.What the Wi-Fi of employing digital data transmission used is the operating frequency of 2.4Ghz, has very high anti-interference, and has the overlength transmission range of 100M (theoretical value).Saved traditional cable fully and connected, can satisfy harmless transmission audio signal.
Description of drawings
Fig. 1 is that the utility model circuit module connects schematic block diagram.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, details are as follows to embodiment, structure, feature that foundation the utility model provides:
As shown in Figure 1, a kind of ANTENN AUDIO transmission adaptor is characterized in that the radiating portion circuit is provided with A/D modular converter, audio-frequency signal coding module; The receiving unit circuit is provided with audio signal decoding module, D/A modular converter; Radiating portion is connected the wireless transmission of carrying out audio frequency with receiving unit by Wi-Fi (802.11b) wireless transmission protocol.
1. wireless device Host accepts simulated audio signal, uses built-in Encoder to encode, and converts digital signal to.
2. the receiver in wireless connections adapter eradication SSID and the scope carries out wireless connections.
3. after connection is finished, begin to carry out transmission of audio signals, and the audio signal of storage is stored in the SDRAM high-speed cache of receiver.
4. the Decoder in the wireless receiver decodes the audio signal that receives, and changes into simulated audio signal, through amplifying back output.
The utility model will be a key technology that leads the transmission of following ANTENN AUDIO, and key point is the coding of audio signal, the transmission of wireless data and in the decoding of receiving terminal to signal.Along with development of computer, the technology of wireless connections is arisen at the historic moment, Wi-Fi is a kind of wireless transmission protocol, it can be by the high-frequency of 2.4GHZ, realize the glitch-free transfer of data of high speed, thus utilize this technology to use the wireless high quality transmission of 802.11b standard realization audio signal, to satisfy the requirement of people to this function, this technology has a wide range of applications, and can be referred to as Free-Link ANTENN AUDIO transmission adaptor.
Above-mentioned detailed description of the ANTENN AUDIO transmission adaptor being carried out with reference to embodiment; be illustrative rather than determinate; can adjust the specifications parameter of building block according to actual needs; therefore in the variation and the modification that do not break away under the utility model general plotting, should belong within the protection range of the present utility model.
Claims (1)
1, a kind of ANTENN AUDIO transmission adaptor is characterized in that the radiating portion circuit is provided with A/D modular converter, audio-frequency signal coding module; The receiving unit circuit is provided with audio signal decoding module, D/A modular converter; Radiating portion is connected the wireless transmission of carrying out audio frequency with receiving unit by the Wi-Fi802.11b wireless transmission protocol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620026806.9U CN2927511Y (en) | 2006-07-21 | 2006-07-21 | Wireless audio-frequency transmitting adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620026806.9U CN2927511Y (en) | 2006-07-21 | 2006-07-21 | Wireless audio-frequency transmitting adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2927511Y true CN2927511Y (en) | 2007-07-25 |
Family
ID=38281764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200620026806.9U Expired - Fee Related CN2927511Y (en) | 2006-07-21 | 2006-07-21 | Wireless audio-frequency transmitting adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2927511Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106506029A (en) * | 2016-11-07 | 2017-03-15 | 中山大学 | A kind of u piece of digital wireless audio transmission system and its transmission method |
| CN109429141A (en) * | 2017-08-28 | 2019-03-05 | 鸿富锦精密工业（深圳）有限公司 | Audio signal processor |
-
2006
- 2006-07-21 CN CN200620026806.9U patent/CN2927511Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106506029A (en) * | 2016-11-07 | 2017-03-15 | 中山大学 | A kind of u piece of digital wireless audio transmission system and its transmission method |
| CN109429141A (en) * | 2017-08-28 | 2019-03-05 | 鸿富锦精密工业（深圳）有限公司 | Audio signal processor |
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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 |