CN2665987Y

CN2665987Y - USB power amplification loudspeaker connecting device

Info

Publication number: CN2665987Y
Application number: CN 03270738
Authority: CN
Inventors: 彭增田
Original assignee: XIAOJINGLING CO Ltd
Current assignee: XIAOJINGLING CO Ltd; Juster Co Ltd
Priority date: 2003-08-14
Filing date: 2003-08-14
Publication date: 2004-12-22
Anticipated expiration: 2013-08-14

Abstract

The utility model relates to a USB power amplifier connection device which arranges a digital-analog transform and a power amplifier circuit in a same USB interface to be formed into an integrative device. As the digital-analog transform and the power amplifier circuit are not arranged inside an amplifier cabinet, the loudspeaker volume becomes smaller and portable, the power amplification is improved and the better sound effect is provided; besides, a sound card, an AC power cable, a transformer and a USB cable, etc, are relieved. Especially that the USB cable is replaced by an ordinary horn line to enable the device to be connected through the USB interface of a PC instead of the complex installation.

Description

USB power amplification loudspeaker jockey

Technical field

The utility model relates to a kind of USB power amplification loudspeaker jockey.

Background technology

The general loudspeaker that are applicable to computer all need AC (power supply) line, voltage device, USB line, and circuit is installed in the audio amplifier.Wherein, described circuit comprises the USB transmission line, usb bus as shown in Figure 7, the USB transmission processor, phase lock circuitry, input signal processor, 16 bit moduli converter power amplifiers, mainly be that the digital audio signal of computer output is handled by USB, convert analog signal to by analog-digital chip again, amplify through the power amplification chip then, promote loud speaker sound (this circuit is referred to as digital-to-analogue conversion and power amplification circuit usually).Because digital-to-analogue conversion and power amplification circuit change in the audio amplifier, cause the audio amplifier volume to become big, carry inconvenience, and complicated installation, and can't bring to power, tonequality is relatively poor, the cost height.Because of the restriction of aforementioned condition, cause the scope of use can't go up at being easy to carry and design, thereby reduced the user, can't generally reach extensive use.

Summary of the invention

The purpose of this utility model provides a kind of USB power amplification loudspeaker jockey.

Above-mentioned purpose of the present utility model is achieved in that a kind of USB power amplification loudspeaker jockey, it is characterized in that: digital-to-analogue conversion and power amplification circuit are located in the same USB port and are combined into one device.

Above-mentioned purpose of the present utility model can also realize like this, a kind of USB power amplification loudspeaker jockey, and it is characterized in that: digital-to-analogue conversion and power amplification circuit, output seat all are located in the same USB port.

Because digital-to-analogue conversion and power amplification circuit are not located in the horn box, the audio amplifier smaller volume is so that carry, and bring to power amplifies and can create more good news and imitate, and do not need via sound card, no AC (power supply) line, transformer and USB line etc.In addition, make the USB line into general horn wire, can remove complicated installation from, and can adopt multiple mode and connect.

The utility model is elaborated with instantiation below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is the utility model three-dimensional exploded view;

Fig. 2 is the utility model stereogram;

Fig. 3 is that the utility model is with output seat output first embodiment;

Fig. 4 is that the utility model is with output seat output second embodiment;

Fig. 5 is that the utility model is with output seat output the 3rd embodiment;

Fig. 6 is the utility model output embodiment assembly schematic diagram;

Fig. 7 is the common digital-to-analogue conversion and the block diagram of power amplification circuit;

Fig. 8 is the utility model and personal computer connection diagram;

Fig. 9 is the utility model and mobile computer connection diagram;

Figure 10 is that the utility model chips (digital-to-analogue conversion and power amplification chip) concerns schematic diagram;

Figure 11 is that the utility model chips (digital-to-analogue conversion and power amplification chip) concerns the assembly schematic diagram.

Description of reference numerals: A the utility model; The B loam cake; The C lower cover; The D circuit board; The E loudspeaker; The FUSB port; G chip (analog-digital chip and power amplification chip); The H personal computer; I exports seat; J earphone message terminal; The K earphone; The L optic fibre connector; The M optical fiber cable; The N mobile computer.

Embodiment

As shown in Figure 1, this device A is made of jointly a loam cake B, a lower cover C, a circuit board D, a loudspeaker E, wherein this chip (for adopting common digital-to-analogue conversion and power amplification circuit shown in Figure 7) G is arranged on the circuit board D, and link to each other with USB port F and become one, it is that this device A combines with the USB slot of personal computer H by USB port F as Fig. 2, shown in Figure 8 that its loam cake B combines with lower cover C.

As Fig. 3, shown in Figure 4, this device A can use respectively with loudspeaker E and earphone K by an output seat I, or only connect optic fibre connector L output, as shown in Figure 5, another output seat I can change an optic fibre connector L again into and can insert with earphone message terminal J and can insert dual-purpose joint, since output seat I can with loudspeaker E, earphone K, optical fiber cable M output combines, the equipment of output can be selected according to user's demand, so increase its wide usage, as shown in Figure 6, this figure is the schematic diagram of an output equipment assembly, the variation and the wide usage that fully show this creation, no matter output equipment why, the utility model all can combine with personal computer H by USB port F, and is handled and be converted to signal with chip (digital-to-analogue conversion and power amplification circuit) G and export any equipment to.Fig. 8, Fig. 9 show two kinds of embodiment of this device A, no matter among the figure be personal computer H or mobile computer N, be equipped with the slot of a USB, can be connected with this device A by this slot, can use, as Figure 10, shown in Figure 11, its output equipment and chip (digital-to-analogue conversion and power amplification circuit) G wiring connected diagram between the two, can be as shown in FIG., present its multiduty wide usage, more do the work of treatment of sound, make that the power amplification multiple is bigger, sound effect is better with this chip (digital-to-analogue conversion and power amplification) G.

Because therefore the utility model is arranged on circuit in the USB port, rather than is arranged in the audio amplifier,

Have the following advantages:

1, can create more good news and imitate and make audio amplifier littler, so that carry.

2, do not need any computer that experience is installed.

3, do not need AC (power supply) line.

4, do not need transformer.

5, analog-digital chip and power amplification chip all are located at the connection on the same USB port, but bring to power, reduce cost.

6, can adopt multiple mode and connect, elasticity is bigger.

The above only is of the present utility model one preferable possible embodiments; be not to be used for limiting scope of the present utility model; so spirit of all this utility model of utilization and the equivalent structure that principle is done; directly or indirectly apply to other correlative technology field, all should fall into protection range of the present utility model.

Claims

1, a kind of USB power amplification loudspeaker jockey, it is characterized in that: digital-to-analogue conversion and power amplification circuit are located in the same USB port and are combined into one device.

2, a kind of USB power amplification loudspeaker jockey, it is characterized in that: digital-to-analogue conversion and power amplification circuit, output seat all are located in the same USB port.

3, USB power amplification loudspeaker jockey as claimed in claim 2 wherein should output seat grafting loudspeaker plug or headset plug.

4, USB power amplification loudspeaker jockey as claimed in claim 2, wherein this output seat is an optical fiber output seat, is connected with the decoder or the amplifier of optical fiber input.

5, USB power amplification loudspeaker jockey as claimed in claim 2 wherein should be exported the synthetic socket that seat adopts general signal output and the output of optical fiber signal.