CN2682539Y - Multimedia loudspeaker box - Google Patents
Multimedia loudspeaker box Download PDFInfo
- Publication number
- CN2682539Y CN2682539Y CN 200320119453 CN200320119453U CN2682539Y CN 2682539 Y CN2682539 Y CN 2682539Y CN 200320119453 CN200320119453 CN 200320119453 CN 200320119453 U CN200320119453 U CN 200320119453U CN 2682539 Y CN2682539 Y CN 2682539Y
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- Prior art keywords
- loudspeaker box
- loudspeaker
- multimedia
- multimedia loudspeaker
- usb device
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- 230000005236 sound signal Effects 0.000 claims abstract description 4
- 230000003321 amplification Effects 0.000 abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 241001269238 Data Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
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Abstract
The utility model discloses a multimedia loudspeaker box, comprising a power amplification circuit, a loudspeaker and an MP3 demoding circuit. The input terminal of the multimedia loudspeaker box receives the signal input of a USB device. The output terminal of the multimedia loudspeaker box is connected with the signal input terminal of the power amplification circuit or the loudspeaker, which is used for directly reading the file with the MP3 format in the USB device and changing the file into a simulated audio signal which is outputted to the power amplification circuit or is directly played by the loudspeaker. If people own a memory using the USB device as a storage medium and the acoustic frequency data with the MP3 format, the music can be directly played. People can listen to the music through the loudspeaker box or can directly listen to the music with a headphone. The use is convenient and rapid. Because the USB device has the rewriting performance, the data can be frequently refreshed. People do not need to frequently buy CDs. The expenditure cost can be saved. People can download the newest MP3 data from the internet at any time to select the favorite music. The multimedia loudspeaker box can satisfy the personalized requirement of the user.
Description
[technical field]:
The utility model relates to a kind of audio amplifier.
[background technology]:
At present, the abstract the recreational consumption of family is in quick growth, the mode of digitized audio-visual propagation is more and more universal, this information propagation pattern highly developed today in the internet, a lot of latest music have adopted online published method and have sold with the mode that provides the MP3 format file to download, people can or obtain the MP3 data on the net simultaneously on market, MP3 has become audio data and propagated the most widely and storage mode.USB device on the market such as portable hard drive, flash disk, USB card, USB card reader etc. are more and more, because USB device is easy to carry, capacity is big, people adopt these equipment to store individual data more and more, comprise the audio data of some MP3 format.But behind the USB device storage MP3 is impossible play-over music, and these audio datas are used if desired, plays on home audio after then will being carved into the CD disc, perhaps needs just can play with computer, extremely inconvenient in the use.
[summary of the invention]:
The purpose of this utility model is exactly in order to overcome the above problems, and a kind of convert file form that need not is provided, and need not by computer the audio amplifier that can directly the MP3 music on the USB device be come out.
The utility model realizes that the technical scheme that above-mentioned purpose adopted is: a kind of multimedia loudspeaker box, comprise power amplifier, loudspeaker, also comprise the MP3 decoding circuit, its input end is accepted the signal input of USB device, and its output terminal is connected with the signal input part of described power amplifier or loudspeaker; Be used for directly reading the file of the MP3 format in the USB device, and be converted to simulated audio signal, output to power amplifier or directly come out by loudspeaker plays.
In the above-mentioned multimedia loudspeaker box, the MP3 decoding circuit comprises USB interface, USB controller, MP3 code translator, digital to analog converter, and USB interface, MP3 code translator are electrically connected with the USB controller respectively, and digital to analog converter is electrically connected with the MP3 code translator.The MP3 decoding circuit also comprises duty selection circuit, is electrically connected with described USB controller; Be used for selecting to play, suspend, stop, duties such as F.F., rewind down.It is keyswitch group or infrared transceiver that duty is selected circuit.The USB controller can adopt the OTI6888 chip.
Adopt the beneficial effect of above scheme to be:
People can no longer rely on computer to carve behind the CD at home the audio-visual household electrical appliances again and play or play by computer, be the memory of storage media and the audio data of MP3 format as long as have USB device, just can play-over music, directly listen to by audio amplifier or lug machine, easy to use, quick.And because the erasable property that USB device had, often data for updating does not need frequently to buy CD, can save consumer cost greatly; Can download up-to-date MP3 data at any time on the net, select the music of oneself liking, satisfy user's individual demand.
[description of drawings]:
Fig. 1, Fig. 2 are schematic block circuit diagram of the present utility model;
Fig. 3 is the MP3 decoding schematic block circuit diagram that the utility model adopts;
Fig. 4 is the circuit logic theory diagram of USB controller OTI6888;
Fig. 5 is the circuit theory diagrams of the MP3 decoding circuit of the utility model embodiment.
[embodiment]:
Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.
Fig. 1, Fig. 2 are schematic block circuit diagram of the present utility model, and the audio output signal of MP3 decoding circuit can directly be exported to loudspeaker plays, also can output to loudspeaker plays again after the built in sound box power amplifier carries out the signal amplification.Fig. 3 is the MP3 decoding schematic block circuit diagram that the utility model adopts, the USB controller reads the MP3 format file that stores in the flash memory that is plugged on the Universal USB interface, again after the MP3 decoder for decoding, be converted to simulated audio signal by digital to analog converter and export to power amplifier or loudspeaker, work selection mode selection circuit is used to select the duty of decoding circuit, as broadcast, F.F., rewind down etc.Fig. 4 is the circuit logic schematic diagram of USB controller OTI6888, and this controller can initiatively read MP3 format file in the USB device.
As Fig. 5, in the present embodiment, the core circuit USB controller U5 of MP3 decoding circuit adopts the OTI6888 chip, MP3 code translator U6 adopts the MA3507 chip, digital to analog converter U4 adopts the PCM1770 chip, and ROM (read-only memory) U1 adopts 27512 chips, and stabilized voltage supply U3 adopts the ASM1117 chip, the power source conversion that is mainly used in 5V is a 3.3V voltage, for uses such as OTI6888.Controller adopts the clock circuit of 14.318M, and SW1-SW3 is controls playing, F.F., rewind down respectively.
The MP3 code translator U6 of present embodiment also can adopt the OTI-001316M chip, also can carry out with the infrared receiving/transmission mode the control of the duty of MP3 decoding circuit.
Claims (7)
1, a kind of multimedia loudspeaker box comprises power amplifier, loudspeaker, it is characterized in that: also comprise the MP3 decoding circuit, its input end is accepted the signal input of USB device, and its output terminal is connected with the signal input part of described power amplifier or loudspeaker; Be used for directly reading the file of the MP3 format in the USB device, and be converted to simulated audio signal, output to power amplifier or directly come out by loudspeaker plays.
2, multimedia loudspeaker box as claimed in claim 1, it is characterized in that: described MP3 decoding circuit comprises USB interface, USB controller, MP3 code translator, digital to analog converter, described USB interface, MP3 code translator are electrically connected with described USB controller respectively, and described digital to analog converter is electrically connected with the MP3 code translator.
3, multimedia loudspeaker box as claimed in claim 2 is characterized in that: described MP3 decoding circuit also comprises duty selection circuit, is electrically connected with described USB controller; Be used for selecting to play, suspend, stop, duties such as F.F., rewind down.
4, multimedia loudspeaker box as claimed in claim 3 is characterized in that: it is the keyswitch group that described duty is selected circuit.
5, multimedia loudspeaker box as claimed in claim 3 is characterized in that: it is infrared transceiver that described duty is selected circuit.
6, as the described multimedia loudspeaker box in arbitrary top among the claim 2-5, it is characterized in that: described USB controller is the OTI6888 chip.
7, as each described multimedia loudspeaker box among the claim 1-5, it is characterized in that: also comprise earphone interface, be parallel to the signal input part of described loudspeaker or the signal output part of described digital to analog converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320119453 CN2682539Y (en) | 2003-12-16 | 2003-12-16 | Multimedia loudspeaker box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320119453 CN2682539Y (en) | 2003-12-16 | 2003-12-16 | Multimedia loudspeaker box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2682539Y true CN2682539Y (en) | 2005-03-02 |
Family
ID=34599594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320119453 Expired - Fee Related CN2682539Y (en) | 2003-12-16 | 2003-12-16 | Multimedia loudspeaker box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2682539Y (en) |
-
2003
- 2003-12-16 CN CN 200320119453 patent/CN2682539Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGGUAN CITY MEINENG ELECTRONICS CO., LTD. ADDRE Free format text: FORMER OWNER: SHAO XIAOBING ADDRESS Effective date: 20081121 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081121 Address after: Guangdong province Dongguan City Qiaotou town Shao Gang head Fudu Garden Center Road No. 3 building B building second floor, zip code: 523520 Patentee after: Dongguan Meineng Electronics Co., Ltd. Address before: Guangdong province Dongguan city Changping town center Guangyu, zip code: 523560 Patentee before: Shao Xiaobing |
|
| ASS | Succession or assignment of patent right |
Owner name: DONGGUAN CITY MEINENG ELECTRONICS CO., LTD. Free format text: FORMER OWNER: SHAO XIAOBING Effective date: 20081121 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050302 Termination date: 20111216 |