CN2671272Y - Active multimedia loudspeaker boxes - Google Patents
Active multimedia loudspeaker boxes Download PDFInfo
- Publication number
- CN2671272Y CN2671272Y CN 200420014632 CN200420014632U CN2671272Y CN 2671272 Y CN2671272 Y CN 2671272Y CN 200420014632 CN200420014632 CN 200420014632 CN 200420014632 U CN200420014632 U CN 200420014632U CN 2671272 Y CN2671272 Y CN 2671272Y
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- audio amplifier
- loudspeaker box
- audio
- main body
- active
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- Expired - Fee Related
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Abstract
The utility model relates to the technical field of the loudspeaker boxes, in particular to an active multimedia loudspeaker box. The technical proposal is that a USB interface and an audio signal input interface are arranged on a panel of an active loudspeaker box body; wherein, the power electrode of the USB interface is connected with the power of the loudspeaker box body; the audio signal input interface is connected with the audio signal input terminal of the loudspeaker box body. After the utility model adopts the structure, the power of the U disc and the MP3 device is directly provided by the loudspeaker box body. The audio signal outputted by the active multimedia loudspeaker box is played through the loudspeaker box body. Because the active multimedia loudspeaker box does not need the external power supply or does not need to use the battery of the active multimedia loudspeaker box, the active multimedia loudspeaker box can be used for a long time. The audio signal is played through the active loudspeaker box and the acoustic fidelity is better.
Description
Technical field:
The utility model relates to the audio amplifier technical field, refers in particular to a kind of multimedia active audio amplifier.
Background technology:
At present, no matter be multimedia active audio amplifier or other speaker products, the audio frequency of its playback all is that computer data information is transmitted by computer sound card, and equipment such as the VCD of family expenses, CD, DVD, the signal on its audio frequency apparatus derives from CD, VCD, DVD laser disc, and the CD-RW discsCD-RW operating time is long, its surface will generate heat, easily the mill flower causes the audio signal distortion, and the audio amplifier playback is source property variation also.The consumer can't directly utilize the audio amplifier playing back music under the situation that does not have equipment such as computer, CD, VCD, DVD simultaneously.In addition, with development of science and technology, the appearance of USB flash disk (mobile disk) and MP3, people can directly directly enjoy these product institute playing back music by earphone now.Its data-interface of this series products all adopts USB interface, and USB is the abbreviation of English Universal Serial Bus, and Chinese implication is " USB ".It is the new interface technology in a kind of PC of being applied in field.Along with Microsoft's built-in support module in Windows 98 to USB interface, add day by day increasing of USB device, USB interface has become the interface of extensive use.And the MP3 player is a kind of movably musical instruments, in memory card is housed, be used for playing the MP3 song specially, utilize a control decoding chip, by decoding chip the mp3 file among flash memory (Flash Momery) or the flash card (Smart Media) is decoded, through digital-to-analogue conversion, at last music is transported in our ear.It can carry music up and down from online music website by Internet in addition, and has little, in light weight, the anti-shake advantage of volume and liked by numerous users.Have two interfaces on the MP3 player at present, one of them is USB interface (perhaps changing into USB interface by data wire) more, and this is used for being connected with computer equipment, data are wherein upgraded or revised.Another is audio output interface (is us usually said receiver J-Horner), and this interface is used to connect earphone cord, with the music in the uppick MP3 player.In addition, in view of popularizing of MP3 music format, the manufacturer of many production USB flash disks is integrated MP3 broadcast decoder chip in its product also, makes common U have the function of MP3 player.No matter but be that USB flash disk or MP3 player generally all are that it is difficult to combine with present stereo set by self power supply, how its music of playing is only appreciated for the individual.And common stereo set is not possess the such interface of USB, and promptly the user can't directly appreciate the music that these products are play by common active audio amplifier.
Summary of the invention:
The purpose of this utility model is to overcome the deficiency of product, proposes a kind of multi-functional, the multimedia active audio amplifier that can play the MP3 music.
The utility model is achieved by the following technical solution: a panel of an active audio amplifier main body is provided with a USB interface and an audio input interface, and wherein the power electrode in the USB interface is connected to the power supply in the audio amplifier main body; Audio input interface is connected with the audio signal input end of audio amplifier main body.
Above-mentioned audio amplifier main body comprises panel and casing, and wherein panel is arranged at the casing front end, and USB interface and audio input interface are arranged on the casing on the circuit board, and the position of corresponding USB interface and audio input interface offers through hole on the panel.The power source voltage that power electrode in the described USB interface is connected in the audio amplifier main body is 5V.
After the utility model adopts this structure, the power supply of USB flash disk, MP3 equipment is directly provided by the audio amplifier main body, and the audio signal of its output plays back by the audio amplifier main body, because need not external power supply or use self battery, it not only can keep long user mode, and audio signal is play by active audio amplifier, and tonequality will be better.
Description of drawings:
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is a stereogram of the present utility model;
Fig. 2 is the utility model three-dimensional exploded view;
Fig. 3 is the circuit diagram of the utility model one specific embodiment.
Embodiment:
See Fig. 1,2, the utility model comprises an active audio amplifier main body 1, and a panel 11 of audio amplifier main body 1 is provided with a USB interface 2 and an audio input interface 3, and wherein the power electrode in the USB interface 2 is connected to the power supply in the audio amplifier main body 1; Audio input interface 3 is connected with the audio signal input end of audio amplifier main body 3.Its circuit ways of connecting can be connected with audio amplifier main body 1 by circuit board 4.
Frame mode of the present utility model is: audio amplifier main body 1 comprises panel 11 and casing 12, wherein panel 11 is arranged at casing 12 front ends, USB interface 2 and audio input interface 3 are arranged on the casing 12 on the circuit board 4, the position of corresponding USB interface 2 and audio input interface 3 offers through hole 111,112 on the panel 11, and promptly the through hole on the panel 11 111,112 is the jack of USB interface 2 and audio input interface 3.
The power source voltage that power electrode in the described USB interface 2 is connected in the audio amplifier main body 1 is 5V, and this is for adopting the voltage of USB interface Device-General.USB flash disk, MP3 equipment just need not oneself be powered like this, and it can be its power supply by the power supply that active audio amplifier inserted, and reduces self battery loss.We know, establish four cross-talks in the USB interface altogether, wherein two cross-talks are the inputs as power supply, in addition two cross-talks are as the input and output of data-signal, in the utility model, only power supply is imported cross-talk and is connected with the power supply of audio amplifier main body 1 and gets final product since in the USB flash disk, MP3 equipment self have a MP3 decoding chip, so the audio amplifier main body 1 that the utility model is adopted need not be set up data decode circuitry again, as long as it provides power supply.
See accompanying drawing 4, this is the circuit diagram of an embodiment of the present utility model, and it mainly is the audio amplifier circuit of audio amplifier main body 1, and wherein two power supply input cross-talks in the USB interface 2 are connected to the power supply in the audio amplifier main body 1; Audio input interface 3 is connected with audio signal input end in audio amplifier main body 1 circuit and gets final product.
When the utility model uses, at first by audio signal wire with the audio output port on USB flash disk, the MP3 equipment therewith audio input interface 3 couple together, promptly the audio frequency of USB flash disk, the output of MP3 equipment is by in the audio signal wire input audio amplifier main body 1.But USB flash disk, the MP3 series products of at present common playing back music, its interface has two kinds: USB flash disk can be generally all from being provided with a USB plug, can directly insert in the USB interface in the computer equipment, and the MP3 player is not usually from establishing USB plug, and it need couple together by the USB interface of a connecting line with itself and computer.But these USB flash disks, MP3 player all must be provided with an audio output port, so that music signal is exported.In use, USB flash disk or MP3 player are directly inserted or be connected in the USB interface of the present utility model by data bus connection, by audio signal wire USB flash disk, MP3 equipment and audio input interface 3 are coupled together then.Like this, the audio signal of USB flash disk, MP3 equipment output just plays back by audio amplifier main body 1, and need not external power supply or use self battery, and it not only can keep long user mode, and audio signal is play by active audio amplifier, and tonequality will be better.
Claims (3)
1, a kind of multimedia active audio amplifier, comprise an active audio amplifier main body (1), it is characterized in that: a panel (11) of audio amplifier main body (1) is provided with a USB interface (2) and an audio input interface (3), and wherein the power electrode in the USB interface (2) is connected to the power supply in the audio amplifier main body (1); Audio input interface (3) is connected with the audio signal input end of audio amplifier main body (3).
2, multimedia active audio amplifier according to claim 1, it is characterized in that: audio amplifier main body (1) comprises panel (11) and casing (12), wherein panel (11) is arranged at casing (12) front end, USB interface (2) and audio input interface (3) are arranged on the last circuit board of casing (12) (4), and the position that panel (11) is gone up corresponding USB interface (2) and audio input interface (3) offers through hole (111), (112).
3, multimedia active audio amplifier according to claim 1 is characterized in that: the power source voltage that the power electrode in the described USB interface (2) is connected in the audio amplifier main body (1) is 5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420014632 CN2671272Y (en) | 2004-01-13 | 2004-01-13 | Active multimedia loudspeaker boxes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420014632 CN2671272Y (en) | 2004-01-13 | 2004-01-13 | Active multimedia loudspeaker boxes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2671272Y true CN2671272Y (en) | 2005-01-12 |
Family
ID=34482708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420014632 Expired - Fee Related CN2671272Y (en) | 2004-01-13 | 2004-01-13 | Active multimedia loudspeaker boxes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2671272Y (en) |
-
2004
- 2004-01-13 CN CN 200420014632 patent/CN2671272Y/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 | ||
| 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 |