CN103413562A - Wireless audio adapter and audio playing device - Google Patents
Wireless audio adapter and audio playing device Download PDFInfo
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- CN103413562A CN103413562A CN2013103480716A CN201310348071A CN103413562A CN 103413562 A CN103413562 A CN 103413562A CN 2013103480716 A CN2013103480716 A CN 2013103480716A CN 201310348071 A CN201310348071 A CN 201310348071A CN 103413562 A CN103413562 A CN 103413562A
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Abstract
The invention provides a wireless audio adapter and an audio playing device. The wireless audio adapter comprises a wireless module, a master controller and an SD interface. The master controller comprises a wireless module interface, a protocol processing unit, an audio decoder, an audio coder, a file system simulator and an SD controller. The master controller is connected with the wireless module through the wireless module interface, the wireless module interface, the protocol processing unit, the audio decoder, the audio coder, the file system simulator and the SD controller are connected in sequence, the file system simulator is further connected with the protocol processing unit, and the SD controller is connected with the audio playing device through the SD interface. The wireless audio adapter and the audio playing device overcome the limitations of a traditional music player with an SD interface and the traditional music player with an SD interface can be changed into a wireless music player.
Description
Technical field
The present invention relates to wireless and Audiotechnica field, particularly relate to a kind of ANTENN AUDIO adapter and a kind of audio-frequence player device.
Background technology
Follow the development of wireless technology and the raising of living standards of the people, all be equipped with wireless device above now a lot of consumer-elcetronics devicess.Meanwhile, music player has spread to huge numbers of families now.Music player is substantially read SD card (Secure Digital Memory Card, safe digital card), is read the basic functions such as USB flash disk (USB interface).But traditional audio-frequence player device does not have radio function substantially, thus just can not with extraneous wireless device communication.
Therefore, how traditional music player with the SD interface is become to the music player with radio function, become a problem demanding prompt solution.
Summary of the invention
Based on this, the invention provides a kind of ANTENN AUDIO adapter and audio-frequence player device, traditional music player with the SD interface can be become to wireless music player.
For achieving the above object, the present invention adopts following technical scheme:
A kind of ANTENN AUDIO adapter comprises: wireless module, master controller, SD interface; Described master controller comprises: wireless module interface, protocol processing unit, audio decoder, audio coder, file system simulator, SD controller; Described master controller is connected with described wireless module by described wireless module interface, described wireless module interface, protocol processing unit, audio decoder, audio coder, file system simulator, SD controller connect successively, described file system simulator also is connected with described protocol processing unit, and described SD controller is connected with audio-frequence player device by described SD interface.
A kind of audio-frequence player device, comprise above-mentioned ANTENN AUDIO adapter.
By above scheme, can be found out, a kind of ANTENN AUDIO adapter of the present invention and audio-frequence player device, after wireless module receives the wireless data that wireless host device sends over, by the wireless module interface, wireless data is sent to protocol processing unit, protocol processing unit obtains the ANTENN AUDIO data to wireless data analysis, the ANTENN AUDIO data form the PCM data through audio decoder, the PCM data are through audio coder, form the voice data that audio-frequence player device can be identified, again this voice data is sent in the file system simulator and form the audio file in file system, when audio-frequence player device reads SD card data by the SD interface, corresponding data in SD controller file reading system simulator carries out the audio frequency broadcasting for audio-frequence player device.The present invention is by being modeled to wireless module on a SD card, the mode that allows audio-frequence player device read audio file content in the SD card by access visits wireless network, overcome the limitation of traditional music player with the SD interface, traditional music player with the SD interface can be become to wireless music player, realize the communication of tradition with music player and other wireless device of SD interface, had great market using value.
The accompanying drawing explanation
Fig. 1 is the framework block diagram of the music player radio function of use ANTENN AUDIO adapter expansion bands SD interface;
Fig. 2 is the structural representation of the ANTENN AUDIO adapter in the embodiment of the present invention;
Fig. 3 is the structural representation of master controller in the embodiment of the present invention;
Wherein:
1 is wireless host device; 2 is the ANTENN AUDIO adapter; 3 is audio-frequence player device;
21 is wireless module; 22 is master controller; 23 is the SD interface;
221 is the wireless module interface; 222 is protocol processing unit; 223 is audio decoder; 224 is audio coder; 225 is the file system simulator; 226 is the SD controller; 227 is the wireless identification unit; 228 is the agreement loading unit; 229 is storer; 2210 is the audio driven loading unit.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, technical scheme of the present invention is further described.
Shown in Figure 1, in the present invention by an ANTENN AUDIO adapter 2 being inserted in the SD interface of audio-frequence player device 3, make the music player with the SD interface to carry out radio communication with wireless host device 1, thereby realize traditional music player with the SD interface is become the purpose of wireless music player.
As shown in Figure 2, a kind of ANTENN AUDIO adapter in the present invention in embodiment comprises: wireless module 21, master controller 22, SD interface 23; Concrete, as shown in Figure 3, described master controller 22 comprises: wireless module interface 221, protocol processing unit 222, audio decoder 223, audio coder 224, file system simulator 225, SD controller 226; Described master controller 22 is connected with described wireless module 21 by described wireless module interface 221, described wireless module interface 221, protocol processing unit 222, audio decoder 223, audio coder 224, file system simulator 225, SD controller 226 connect successively, described file system simulator 225 also is connected with described protocol processing unit 222, and described SD controller 226 is connected with audio-frequence player device 3 by described SD interface 23.
Below the course of work of above-mentioned ANTENN AUDIO adapter is described:
After wireless module receives the wireless data that wireless host device sends over, by the wireless module interface, wireless data is sent to protocol processing unit, protocol processing unit obtains the ANTENN AUDIO data to wireless data analysis, the ANTENN AUDIO data form PCM(Pulse-code modulation through audio decoder, pulse code modulation (PCM)) data, the PCM data are through audio coder, form the voice data that audio-frequence player device can be identified, then this voice data is sent in the file system simulator and forms the audio file in file system.It should be noted that, the SD controller in the embodiment of the present invention be SD from controller, when audio-frequence player device read SD card data by the SD interface, corresponding data in SD controller file reading system simulator carried out the audio frequency broadcasting for audio-frequence player device.
It should be noted that, above-mentioned audio file formats can comprise: the proprietary data format that other known audio file formats such as wav form, mp3 form, wma form, acc form, flac form and wireless receiving and dispatching two ends consult.
As an embodiment preferably, described wireless module can be wifi wireless module, bluetooth radio module, infrared radio module, FM(Frequency Modulation, frequency modulation (PFM)) wireless module or zigbee wireless module etc.
As an embodiment preferably, described master controller can also comprise: wireless identification unit 227, agreement loading unit 228, storer 229; Described wireless identification unit 227, agreement loading unit 228, storer 229 connect successively, and described wireless identification unit 227 also is connected with described wireless module interface 221, and described agreement loading unit 228 also is connected with described protocol processing unit 222.
After system powered on, the wireless identification unit can read the wireless module interface data, obtained type and the model of wireless module, and the wireless identification unit sends to the agreement loading unit to the categorical data of the model got.The agreement loading unit just can load corresponding protocol-driven according to type and model carry out protocol processes in protocol processing unit in storer like this.
As an embodiment preferably, described master controller can also comprise: audio driven loading unit 2210, described audio driven loading unit 2210 are connected with described storer 229, protocol processing unit 222, audio decoder 223, audio coder 224, file system simulator 225 respectively.
The agreement loading unit is mentioned in front can load corresponding protocol-driven to protocol processing unit, after agreement has loaded, protocol processing unit can be controlled wireless module by the wireless module interface and communicate by letter with wireless host, obtains the audio data file form of wireless transmission.Protocol processing unit sends to the audio driven loading unit to the audio data file form, and so the audio driven loading unit just can load corresponding audio decoder and is driven in audio decoder and carries out corresponding decoding and process.And, after ANTENN AUDIO adapter of the present invention is inserted into audio-frequence player device, audio-frequence player device can be by the content in SD interface accessing file system, and the file system simulator judges by judging its access file type the audio data format that audio-frequence player device is supported.The file system simulator sends to the audio driven loading unit to the audio data format that judges, like this audio driven loading unit just can read memory in the coding driving of respective audio form, be loaded in audio coder the processing of encoding.
In the embodiment of the present invention, the file system simulator can read the audio compressed files of supporting in the audio driven loading unit and support the form kind, simulates respectively the audio file of each audio format.Audio file is organized with file system format, file system format comprises the form that the audio systems such as FAT12/16, FAT32, NTFS are commonly used, the size of the maximum that the size of each simulation files can be supported for the current file system, if want, realize Play Control, each class file number is wanted 3 files at least.
File system simulator in the embodiment of the present invention can be by judging whether visit data judges that audio-frequence player device is in the state that suspends and play to the SD controller.If file system simulates 3 with the form file, the order by the judgement access file judges the selection of audio-frequence player device to played file, and such as access file 1 before, the file 2 of access, be judged as audio-frequence player device and select next operation now; If access file 2 before, access file 1, be judged as audio-frequence player device and select upper one first operation now.The file system simulator sends to protocol processing unit to the audio-frequence player device operation information that judges, control wireless host device be in play or time-out, a upper head, next etc. mode of operation.
In addition, the present invention also provides a kind of audio-frequence player device, and it comprises above-mentioned ANTENN AUDIO adapter.It will not go into details herein.
By above scheme, can find out, a kind of ANTENN AUDIO adapter of the present invention and audio-frequence player device, after wireless module receives the wireless data that wireless host device sends over, by the wireless module interface, wireless data is sent to protocol processing unit, protocol processing unit obtains the ANTENN AUDIO data to wireless data analysis, the ANTENN AUDIO data form the PCM data through audio decoder, the PCM data are through audio coder, form the voice data that audio-frequence player device can be identified, again this voice data is sent in the file system simulator and form the audio file in file system, when audio-frequence player device reads SD card data by the SD interface, corresponding data in SD controller file reading system simulator carries out the audio frequency broadcasting for audio-frequence player device.The present invention is by being modeled to wireless module on a SD card, the mode that allows audio-frequence player device read audio file content in the SD card by access visits wireless network, overcome the limitation of traditional music player with the SD interface, traditional music player with the SD interface can be become to wireless music player, realize the communication of tradition with music player and other wireless device of SD interface, had great market using value.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (5)
1. an ANTENN AUDIO adapter, is characterized in that, comprising: wireless module, master controller, SD interface; Described master controller comprises: wireless module interface, protocol processing unit, audio decoder, audio coder, file system simulator, SD controller; Described master controller is connected with described wireless module by described wireless module interface, described wireless module interface, protocol processing unit, audio decoder, audio coder, file system simulator, SD controller connect successively, described file system simulator also is connected with described protocol processing unit, and described SD controller is connected with audio-frequence player device by described SD interface.
2. ANTENN AUDIO adapter according to claim 1, is characterized in that, described wireless module is wifi wireless module, bluetooth radio module, infrared radio module, FM wireless module or zigbee wireless module.
3. ANTENN AUDIO adapter according to claim 2, is characterized in that, described master controller also comprises: wireless identification unit, agreement loading unit, storer; Described wireless identification unit, agreement loading unit, storer connect successively, and described wireless identification unit also is connected with described wireless module interface, and described agreement loading unit also is connected with described protocol processing unit.
4. ANTENN AUDIO adapter according to claim 3, it is characterized in that, described master controller also comprises: audio driven loading unit, described audio driven loading unit are connected with described storer, protocol processing unit, audio decoder, audio coder, file system simulator respectively.
5. an audio-frequence player device, is characterized in that, comprises ANTENN AUDIO adapter as described as claim 1-4 any one.
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| CN2013103480716A CN103413562A (en) | 2013-08-09 | 2013-08-09 | Wireless audio adapter and audio playing device |
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Application publication date: 20131127 |