CN205081902U - Multichannel numeral home theater system of decoding - Google Patents
Multichannel numeral home theater system of decoding Download PDFInfo
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- CN205081902U CN205081902U CN201520785463.3U CN201520785463U CN205081902U CN 205081902 U CN205081902 U CN 205081902U CN 201520785463 U CN201520785463 U CN 201520785463U CN 205081902 U CN205081902 U CN 205081902U
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Abstract
The utility model provides a multichannel numeral home theater system of decoding, is including two decoder chips, the many channel signal auto -change over device of audio frequency, video signal auto -change over device, switching power supply, audio frequency channel signal amplifier, audio frequency digit power amplifier, audio signal input, video signal input, video signal output and speaker, the utility model discloses can connect the input of multichannel digital signals input or analog signal, equipment is small multiple functional to be fit for using in the small size room.
Description
Technical field
The utility model relates to a kind of multi-channel digital decoding household audio and video system.
Background technology
The digital decoding household audio and video system function singleness of prior art, needs plurality of devices to coordinate and could realize multichannel effect, and these equipment puts volume together comparatively greatly, are not suitable for the use in small size room.
Utility model content
For overcoming the deficiencies in the prior art, the utility model provides a kind of multi-channel digital decoding household audio and video system.
The technical scheme that the utility model provides is:
A kind of multi-channel digital decoding household audio and video system, comprises dual decoding chip, audio multichannel signal switching apparatus, video switcher, Switching Power Supply, audio channel signals amplifier, digital audio power amplifier, audio signal input end, video signal input terminal, VT and loud speaker;
Described dual decoding chip is DTS and DOLBY audio decoder chip, described audio signal input end, audio multichannel signal switching apparatus, video switcher connect with dual decoding chip electrical respectively, and described video signal input terminal and VT are electrically connected with video switcher respectively; Described audio multichannel signal switching apparatus, audio channel signals amplifier, digital audio power amplifier and loud speaker are electrically connected successively; Described Switching Power Supply is respectively described dual decoding chip, audio multichannel signal switching apparatus, video switcher, audio channel signals amplifier, digital audio power amplifier, audio signal input end, video signal input terminal, VT and power speakers;
Wherein said audio channel signals amplifier at least comprise left/right (L/R) audio channel signals amplifier, left around/right around (SL/SR) audio channel signals amplifier, left back around/rear right around (SBL/SBR) audio channel signals amplifier, mid-(CEN) audio channel signals amplifier, supper bass (SUB) audio channel signals amplifier; Described digital audio power amplifier at least comprise left/right (L/R) digital audio power amplifier, left around/right around (SL/SR) digital audio power amplifier, rear left around/rear right around (SBL/SBR) digital audio power amplifier, mid-(CEN) digital audio power amplifier, supper bass (SUB) digital audio power amplifier.
Preferably, described audio signal input end comprises CD audio signal input end and AUX audio signal input end, described CD audio signal input end and AUX audio signal input end are electrically connected with audio analog signals switching device shifter respectively, and described audio analog signals switching device shifter and dual decoding chip electrical connect.
Preferably, described audio signal input end comprises COAXIAL audio signal input end and OPTICAL audio signal input end, and described COAXIAL audio signal input end and OPTICAL audio signal input end connect with dual decoding chip electrical respectively.
Preferably, described video switcher is HDMI audio-video signal switching device shifter, and described video signal input terminal is four road HDMI audio-video signal inputs.
Preferably, described video signal input terminal is three road video signal input terminals.
Preferably, also comprise display drive apparatus, described display drive apparatus and dual decoding chip electrical connect.
Preferably, also comprise infrared receiver, described infrared receiver and dual decoding chip electrical connect.
Preferably, also comprise 7.1 sound channel signal inputs, described 7.1 sound channel signal inputs are electrically connected with described audio multichannel signal switching apparatus.
Preferably, also comprise the key-press input end for controlling described multi-channel digital decoding household audio and video system, described key-press input end and dual decoding chip electrical connect.
The beneficial effects of the utility model:
The utility model can connect multiply digital signals input or analog signal input, and equipment volume little multiple functional being adapted at uses in small size room, multiple functional, easy to use.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of multi-channel digital of the present utility model decoding household audio and video system;
Fig. 2 is the system configuration schematic diagram of the independent multichannel decoder-coder of the dual decoding chip of multi-channel digital of the present utility model decoding household audio and video system;
Fig. 3 is the chip internal structure schematic diagram of the audio multichannel signal switching apparatus of multi-channel digital of the present utility model decoding household audio and video system;
Fig. 4 is the electrical block diagram of the video switcher of multi-channel digital of the present utility model decoding household audio and video system;
Fig. 5 is the electrical block diagram of the Switching Power Supply of multi-channel digital of the present utility model decoding household audio and video system;
Fig. 6 is the electrical block diagram of the multi-channel digital of the present utility model decoding display drive apparatus of household audio and video system, infrared receiver and key-press input end;
Fig. 7 is the electrical block diagram of the audio channel signals amplifier of multi-channel digital of the present utility model decoding household audio and video system.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, a kind of multi-channel digital decoding household audio and video system, comprises dual decoding chip 1 (described dual decoding chip is DTS and DOLBY audio decoder chip), audio multichannel signal switching apparatus 2, video switcher 3, Switching Power Supply 4, audio channel signals amplifier 5, digital audio power amplifier 6, audio signal input end 7, video signal input terminal 8, VT 9 and loud speaker 12; Wherein said dual decoding chip is DTS/DOLBY dual decoding chip 1.
Described audio signal input end 7, audio multichannel signal switching apparatus 2, video switcher 3 are electrically connected with dual decoding chip 1 respectively, and described video signal input terminal 8 and VT 9 are electrically connected with video switcher 3 respectively; Described audio multichannel signal switching apparatus 2, audio channel signals amplifier 5, digital audio power amplifier 6 and loud speaker 12 are electrically connected successively; Described Switching Power Supply 4 is respectively described dual decoding chip 1, audio multichannel signal switching apparatus 2, video switcher 3, audio channel signals amplifier 5, digital audio power amplifier 6, audio signal input end 7, video signal input terminal 8, VT 9 and loud speaker 12 and powers.
Wherein said audio channel signals amplifier 5 at least comprise left/right (L/R) audio channel signals amplifier, left around/right around (SL/SR) audio channel signals amplifier, left back around/rear right around (SBL/SBR) audio channel signals amplifier, mid-(CEN) audio channel signals amplifier, supper bass (SUB) audio channel signals amplifier; Described digital audio power amplifier 6 at least comprise left/right (L/R) digital audio power amplifier, left around/right around (SL/SR) digital audio power amplifier, rear left around/rear right around (SBL/SBR) digital audio power amplifier, mid-(CEN) digital audio power amplifier, supper bass (SUB) digital audio power amplifier.Digital audio power amplifier wherein with two sound channels in left and right is electrically connected with at least two loud speakers, and mid-(CEN) digital audio power amplifier and supper bass (SUB) digital audio power amplifier are at least electrically connected with loud speaker one by one.
Described audio signal input end 7 comprises CD audio signal input end, AUX audio signal input end, COAXIAL audio signal input end and OPTICAL audio signal input end, wherein said CD audio signal input end and AUX audio signal input end are electrically connected with audio analog signals switching device shifter respectively, and described audio analog signals switching device shifter and dual decoding chip electrical connect; Described COAXIAL audio signal input end and OPTICAL audio signal input end respectively direct and dual decoding chip electrical connect.COAXIAL audio signal input end of the present utility model has two, is respectively COAXIAL1 audio signal input end and COAXIAL2 audio signal input end.
The utility model also 7.1 sound channel signal inputs 16 in addition, due to the signal inherently multi channel signals of 7.1 sound channels, so described 7.1 sound channel signal inputs 16 are directly electrically connected with described audio multichannel signal switching apparatus 2.
Video signal input terminal of the present utility model comprises three road video signal input terminals and four road HDMI audio-video signal inputs, wherein said three road video signal input terminals are electrically connected with described video switcher 3, and described four road HDMI audio-video signal inputs be all the HDMI audio-video signal switching device shifter 10 playing vision signal switching effect and be electrically connected, described HDMI audio-video signal switching device shifter 10 is electrically connected with dual decoding chip 1.
Of the present utility model also comprise display drive apparatus 13, infrared receiver 14 and for control described multi-channel digital decoding household audio and video system key-press input end 15, described display drive apparatus 13, infrared receiver 14 and key-press input end 15 are electrically connected with dual decoding chip 1 respectively.
Multi-channel digital decoding household audio and video system of the present utility model can connect multiply digital signals input or analog signal input.Product is used for the dual decoding movie theatre power amplifier in small size room.Dual decoding refers to DTS and DOLBY audio decoder.Dual decoding function i ntegration is on CIRRUSLOGICC497 family chip, it can support DolbyEX, DolbyDigital5.1, DTS ?the audio effect processing pattern such as ES, DTS5.1, DolbyPL2X, DSP7.1MODE, DTSNEO6, be provided with automatic signal form DOLBY/DTS/PCM to decode, it is integrated on same silicon chip as high-speed dsp jointly, keep advanced simulated performance simultaneously, the isolation between transducer and DSP can be improved, realize the high-performance of DSP, and affect the performance of transducer hardly.Dual decoding chip 1 adopts double-core 32-BIT technology, its four-way analog to digital converter can realize the dynamic range of 105dB and the THD+N of-98dB, the dynamic range of eight port number weighted-voltage D/A converters is 108dB, THD+N is-98dB, and the system configuration of independent multichannel decoder-coder as shown in Figure 2.
The chip internal structure of audio multichannel signal switching apparatus 2 of the present utility model as shown in Figure 3, the R2A15218FP chip that audio multichannel signal switching apparatus 2 of the present utility model adopts RENESAS to produce.AUX signal is input to 58,59 pin of R2A15218FP, and CD signal is input to 60,61 pin, and two paths of signals is delivered to analog signal and switched, and the signal after switching is exported by 90,91 pin of R2A15218FP and delivers on two-decoder.Analog signal switching is delivered in 7.1 signal inputs or multi channel signals switches, selected signal is delivered to volume adjusting and is controlled, and each step of volume adjusting is 0.5dB, delivers to tone regulable control after sending volume adjusting, each step that tone regulates is 2dB, always total ± 14dB.After tone regulable control, enter volume adjusting again, export from 21 of R2A15218FP, 23 pin after volume adjusting.The signal of 7.1 sound channels is from 36 to the 43 pin inputs of R2A15218FP, and the signal of another road 7.1 sound channel switches from delivering to multi channel signals after two-decoder outputs to 93 to 100 pin inputs.
The electrical block diagram of video switcher 3 of the present utility model as shown in Figure 4, video switcher 3 of the present utility model has three tunnel vision signal inputs, enter 9,14,16 pin of 3U01/NJM2293 chip respectively through 3C01,3C02,3C03, then choose required audio-video signal source by 3,12 pin of host CPU control 3U01/NJM2293 chip.1 pin through 3U01/NJM2293 chip after choosing signal source outputs on TV.RS ?232 interface is used to product up-gradation and regulates internal acoustic field effect, can also make transfer of data and use, can connect the Based Intelligent Control port of terminal control.
As shown in Figure 5, Switching Power Supply 4 of the present utility model is made up of power rectifier, power filter, pfc circuit, switching tube, switch transformer, lower pressure rectifier, low-voltage filter etc. the electrical block diagram of Switching Power Supply 4 of the present utility model.Power acquisition switch mode power, efficiency reaches more than 85%, and ad hoc have pfc circuit, PFC be exactly between fundamental current by making interchange input and voltage phase difference reduce to improve power factor, thus make product in use more stable.Ultralow stand-by power consumption, meets the ERPII requirement of European Union.
Of the present utility model also comprise display drive apparatus 13, infrared receiver 14 and for control described multi-channel digital decoding household audio and video system key-press input end 15, as shown in Fig. 6 is, display drive apparatus 13, infrared receiver 14 and key-press input end 15 are integrated on one piece of PCB, display section adopts VFD display mode, and the driving of VFD has been come by 2U01.Power supply receives PLUG09 socket from Switching Power Supply plate, and the voltage of 4.5V is fed to the filament of VFD, and negative 23V voltage delivers to the negative electrode of 2U01, is used as to drive VFD.Infrared signal receives to have been come by 2IR01, delivers on host CPU and carry out reading code after receiving signal.Button adopts scan mode to realize, and Dynamic System gets up more directly perceived.Be located in apparatus front panel by key control, have STANDY, SOURCE+, SOURCE ?, TEST, MODE, DSP, VOLUME+, VOLUME ?respectively.Operate and follow one's bent, convenient and swift, infrared remote controller can also be adopted to operate.
The circuit structure of audio channel signals amplifier 5 of the present utility model and digital audio power amplifier 6 as shown in Figure 7 (being the signal amplification circuit of two passages and the digital power amplifying circuit of two passages), the NJM4558 that audio channel signals amplifier 5 of the present utility model adopts JRC to produce makes signal amplifier, the wide-voltage range of its supply power voltage ± 4V to ± 18V, signal to noise ratio is up to 90dB.The TDA8950 rate of doing work amplifier that digital power amplifier adopts NXP to produce, power output is 2*150W, inside establishes overcurrent protection and overheating protection circuit, has internal oscillator circuit or connects outside vibration, be also provided with MODE circuit.
More than be preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various change and change.All within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (9)
1. a multi-channel digital decoding household audio and video system, is characterized in that:
Comprise dual decoding chip, audio multichannel signal switching apparatus, video switcher, Switching Power Supply, audio channel signals amplifier, digital audio power amplifier, audio signal input end, video signal input terminal, VT and loud speaker;
Described dual decoding chip is DTS and DOLBY audio decoder chip, described audio signal input end, audio multichannel signal switching apparatus, video switcher connect with dual decoding chip electrical respectively, and described video signal input terminal and VT are electrically connected with video switcher respectively; Described audio multichannel signal switching apparatus, audio channel signals amplifier, digital audio power amplifier and loud speaker are electrically connected successively; Described Switching Power Supply is respectively described dual decoding chip, audio multichannel signal switching apparatus, video switcher, audio channel signals amplifier, digital audio power amplifier, audio signal input end, video signal input terminal, VT and power speakers;
Wherein said audio channel signals amplifier at least comprise left/right (L/R) audio channel signals amplifier, left around/right around (SL/SR) audio channel signals amplifier, left back around/rear right around (SBL/SBR) audio channel signals amplifier, mid-(CEN) audio channel signals amplifier, supper bass (SUB) audio channel signals amplifier; Described digital audio power amplifier at least comprise left/right (L/R) digital audio power amplifier, left around/right around (SL/SR) digital audio power amplifier, rear left around/rear right around (SBL/SBR) digital audio power amplifier, mid-(CEN) digital audio power amplifier, supper bass (SUB) digital audio power amplifier.
2. multi-channel digital decoding household audio and video system according to claim 1, is characterized in that:
Described audio signal input end comprises CD audio signal input end and AUX audio signal input end, described CD audio signal input end and AUX audio signal input end are electrically connected with audio analog signals switching device shifter respectively, and described audio analog signals switching device shifter and dual decoding chip electrical connect.
3. multi-channel digital decoding household audio and video system according to claim 1, is characterized in that:
Described audio signal input end comprises COAXIAL audio signal input end and OPTICAL audio signal input end, and described COAXIAL audio signal input end and OPTICAL audio signal input end connect with dual decoding chip electrical respectively.
4. multi-channel digital decoding household audio and video system according to claim 1, is characterized in that:
Described video switcher is HDMI audio-video signal switching device shifter, and described video signal input terminal is four road HDMI audio-video signal inputs.
5. multi-channel digital decoding household audio and video system according to claim 1, is characterized in that:
Described video signal input terminal is three road video signal input terminals.
6. multi-channel digital decoding household audio and video system according to claim 1, is characterized in that:
Also comprise display drive apparatus, described display drive apparatus and dual decoding chip electrical connect.
7. multi-channel digital decoding household audio and video system according to claim 1, is characterized in that:
Also comprise infrared receiver, described infrared receiver and dual decoding chip electrical connect.
8. multi-channel digital decoding household audio and video system according to claim 1, is characterized in that:
Also comprise 7.1 sound channel signal inputs, described 7.1 sound channel signal inputs are electrically connected with described audio multichannel signal switching apparatus.
9. multi-channel digital decoding household audio and video system as claimed in any of claims 1 to 8, is characterized in that:
Also comprise the key-press input end for controlling described multi-channel digital decoding household audio and video system, described key-press input end and dual decoding chip electrical connect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520785463.3U CN205081902U (en) | 2015-10-12 | 2015-10-12 | Multichannel numeral home theater system of decoding |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520785463.3U CN205081902U (en) | 2015-10-12 | 2015-10-12 | Multichannel numeral home theater system of decoding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105979467A (en) * | 2016-04-29 | 2016-09-28 | 乐视控股（北京）有限公司 | Method and device for integrating multiple audio signal post-processing algorithms in Qualcomm platform |
| CN108419179A (en) * | 2018-03-24 | 2018-08-17 | 宁波尚金光能科技有限公司 | Rail audio transmission system when a kind of digital more |
-
2015
- 2015-10-12 CN CN201520785463.3U patent/CN205081902U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105979467A (en) * | 2016-04-29 | 2016-09-28 | 乐视控股（北京）有限公司 | Method and device for integrating multiple audio signal post-processing algorithms in Qualcomm platform |
| CN108419179A (en) * | 2018-03-24 | 2018-08-17 | 宁波尚金光能科技有限公司 | Rail audio transmission system when a kind of digital more |
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