CN202841486U - Automatic switch device based on digital audio signals and used for audio device - Google Patents
Automatic switch device based on digital audio signals and used for audio device Download PDFInfo
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- CN202841486U CN202841486U CN201220445214.6U CN201220445214U CN202841486U CN 202841486 U CN202841486 U CN 202841486U CN 201220445214 U CN201220445214 U CN 201220445214U CN 202841486 U CN202841486 U CN 202841486U
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Abstract
The utility model discloses an automatic switch device based on digital audio signals and used for an audio device. The automatic switch device based on the digital audio signals and used for the audio device includes a digital audio transmission interface used for receiving digital audio signals, a digital audio signal receiving chip having a digital audio signal recognizing function and an electronic switch used for control the startup and the shutdown of the audio device. The digital audio transmission interface and a control terminal of the electronic switch are connected to corresponding ports of the digital audio signal receiving chip respectively. Based on that whether the digital audio signals received by the digital audio transmission interface can be recognized successfully or not, the digital audio signal receiving chip outputs corresponding logic level signals and controls the power supply of the audio device automatically through the electronic switch. The automatic switch device based on the digital audio signals and used for the audio device provided by the utility model can determine that whether the digital audio signals input into the audio device can be recognized successively or not, and the automatic control of the startup and the shutdown of the audio device by the digital audio signals can be realized by utilizing the electronic switch for controlling the power supply of the audio device.
Description
Technical field
The utility model relates to a kind of audio frequency apparatus auto powering on/off apparatus, specifically a kind of audio frequency apparatus auto powering on/off apparatus based on digital audio and video signals.
Background technology
At present, users are when utilizing digital tone source equipment the amusement such as to listen to the music, see a film, play games, and the digital audio and video signals that uses audio frequency apparatus to receive audiogenic device output carries out sound to be put outward, to obtain better acoustics.Alternative audio frequency apparatus mainly is divided into by dividing potential drop power supply and independently-powered two large classes in the market.The stereo set of dividing potential drop power supply often because output power is not enough, and so that its tonequality is relatively poor, has been difficult to satisfy the user to the requirement of tonequality because of its technical bottleneck; And the outer playback matter of independently-powered audio frequency apparatus is good, but lacks effective synchronizing signal between itself and the audiogenic device, and audio frequency apparatus can not be started shooting synchronously when audiogenic device is play, and causes the inconvenience in the use; After the audiogenic device shutdown, the individual user does not often want to take the trouble and does not go to pull out or forget the power supply of turning off audio frequency apparatus, makes audio frequency apparatus be in for a long time "on" position, has brought waste and the potential safety hazard of the energy yet.
The utility model content
Can the purpose of this utility model provides a kind of audio frequency apparatus auto powering on/off apparatus based on digital audio and video signals, can be by determining successfully to be identified control audio frequency apparatus automatic switching to the digital audio and video signals of audio frequency apparatus input.
The purpose of this utility model is achieved through the following technical measures:
A kind of audio frequency apparatus auto powering on/off apparatus based on digital audio and video signals, described auto powering on/off apparatus comprise for the Digital Audio Transmission interface that receives digital audio and video signals, have the digital audio and video signals receiving chip of digital audio and video signals recognition function and be used for the electronic switch of control audio frequency apparatus switching on and shutting down; The control end of described Digital Audio Transmission interface and electronic switch is connected respectively to the corresponding port of digital audio and video signals receiving chip, identify the digital audio and video signals that described Digital Audio Transmission interface receives based on success, described digital audio and video signals receiving chip is exported corresponding logic level signal, automatically controls audio frequency apparatus switching electricity by described electronic switch.
In order to realize the switching between the different switching on and shutting down control modes of audio frequency apparatus, described auto powering on/off apparatus also comprises for the controller that switches the audio frequency apparatus power on-off modes; The control end of described electronic switch is connected to the corresponding port of digital audio and video signals receiving chip by described controller.
In order to realize audio frequency apparatus hand switch machine control mode, described auto powering on/off apparatus also comprises for the control button of manually controlling described audio frequency apparatus switch; Described control button is connected to the corresponding port of described controller.
For adaptive audiogenic device digital audio and video signals out splice going splice commonly used, as a kind of execution mode of the present utility model, described Digital Audio Transmission interface comprises bnc interface, RCA interface and Optical Fiber Transmission interface, and described bnc interface, RCA interface and Optical Fiber Transmission interface are connected respectively to the corresponding port of digital audio and video signals receiving chip.
Compared with prior art, auto powering on/off apparatus of the present utility model has following technique effect:
The utility model is by the digital audio and video signals recognition function of digital audio and video signals receiving chip, can determine successfully to be identified to the digital audio and video signals of audio frequency apparatus input, control again the power on/off of audio frequency apparatus by electronic switch, thereby realized digital audio and video signals to the automatic switching control of audio frequency apparatus, the maximized switching on and shutting down operation of having simplified with the source of sound of digital audio and video signals output and independently-powered audio frequency apparatus user.Because the utility model is so that controlled device Auto Power On need to use the time, automatic shutdown when not needing to use, so the energy-conserving action that the utility model also has the certain significance, the stand-by power consumption of controlled equipment is larger, energy-saving effect is more obvious.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the theory diagram of the utility model embodiment one;
Fig. 2-1 is the circuit theory diagrams of digital audio and video signals receiving circuit among the utility model embodiment one;
Fig. 2-2-1 and Fig. 2-2-2 are power supply and the circuit theory diagrams of switching circuit among the utility model embodiment one;
Fig. 2-3-1, Fig. 2-3-2 and Fig. 2-3-3 are the circuit theory diagrams of decoder in the utility model;
Fig. 3 is the theory diagram of the utility model embodiment two;
Fig. 4-1 is the circuit theory diagrams of digital audio and video signals receiving circuit among the utility model embodiment two;
Fig. 4-2 is the circuit theory diagrams of the utility model embodiment two middle controllers;
Fig. 4-3-1 and Fig. 4-3-2 are power supply and the circuit theory diagrams of switching circuit among the utility model embodiment two.
Embodiment
Embodiment one
As shown in Figure 1, present embodiment one is based on the audio frequency apparatus auto powering on/off apparatus of digital audio and video signals, comprises for the Digital Audio Transmission interface that receives digital audio and video signals, has the digital audio and video signals receiving chip of digital audio and video signals recognition function and be used for the electronic switch of control audio frequency apparatus switching on and shutting down; The control end of Digital Audio Transmission interface and electronic switch is connected respectively to the corresponding port of digital audio and video signals receiving chip, digital audio and video signals based on the reception of success discriminating digit audio transmission interfaces, the digital audio and video signals receiving chip is exported corresponding logic level signal, automatically controls audio frequency apparatus switching electricity by electronic switch.
Wherein, shown in Fig. 2-1, the Digital Audio Transmission interface of present embodiment one, digital audio and video signals receiving chip and their peripheral circuit form the digital audio and video signals receiving circuit, it is the chip U101 of CS8416 that the digital audio and video signals receiving chip is selected model, the Digital Audio Transmission interface comprises bnc interface JP101, RCA interface JP102 and Optical Fiber Transmission interface RX101, these three interfaces are connected to respectively the corresponding port of digital audio and video signals receiving chip by corresponding peripheral circuit, peripheral circuit in the digital audio and video signals receiving circuit arranges and all belongs to prior art, can referring to the accompanying drawing setting, not repeat them here.Wherein, chip U101 has the digital audio and video signals recognition function, and its 14th pin can be exported corresponding logic level signal based on the digital audio and video signals of three interface inputs of chip U101 success identification.
Shown in Fig. 2-2-1 and Fig. 2-2-2, the electronic switch of present embodiment one and associated voltage change-over circuit form power supply and switching circuit, the externally fed power supply is changed out the supply power voltage of unit among the adaptation embodiment by the associated voltage change-over circuit, electronic switch selects PNP triode Q301 and NPN triode Q303 and field effect transistor Q302 to realize, the 14th pin of above-mentioned digital audio and video signals receiving circuit chips U101 is connected to the base stage of triode Q301 by resistance R 302, the emitter of triode Q301 connects that the externally fed power supply converts to+the 3.3V supply power voltage, the control of the 14th pin input logic level by chip U101, triode Q301 is when receiving low level, the collector electrode output low level of triode Q303 makes field effect transistor Q302 conducting output+12V voltage; Set-up mode shown in the drawings of electronic switching circuit, omitted in the accompanying drawing after the electronic switch+12V turns+5V, + 12V turns+10V, + 12V turns-power-switching circuit of 10V, they are the power supplys for audio frequency apparatus work, because the associated voltage change-over circuit belongs to prior art, do not repeat them here.
Shown in Fig. 2-3-1, Fig. 2-3-2 and Fig. 2-3-3, it is the chip U401 of PCM1793 and the decoder that peripheral circuit forms thereof that the audio frequency apparatus of present embodiment one is selected by model, the power voltage supply that it is supplied with by above-mentioned power supply and switching circuit, thus its logic level control of whether powering and being exported by the 14th pin of chip U101.
The operation principle of present embodiment one is:
After digital received chip CS8416 success discriminating digit audio signal, the 14th pin output low level signal of chip CS8416 makes field effect transistor Q302 be in on-state, and decoder obtains power supply start work, and this device is finished the Auto Power On action;
After digital received chip CS8416 can not successfully identify input digital audio signal, as without input, the input situation such as invalid the time, the 14th pin of chip CS8416 can become high level by low level, make field effect transistor Q302 be in off-state, the automatic shutdown action is finished in the shutdown of decoder dead electricity, this device.
The audio frequency apparatus auto powering on/off apparatus of present embodiment one is fit to be applied to the occasion that source of sound and audio frequency apparatus all do not have controller, can guarantee like this simple of automatically control with directly.
Embodiment two
As shown in Figure 3, in order to realize the switching between the different switching on and shutting down control modes of audio frequency apparatus, present embodiment two has increased the controller that is used for switching the audio frequency apparatus power on-off modes on the basis of embodiment one, the control end of electronic switch is connected to the corresponding port of digital audio and video signals receiving chip by controller, by write corresponding control command to controller, the utility model digital audio and video signals can be opened automatically switching on and shutting down control and be combined application with other flexible function.For example, can be provided for manually controlling the control button of audio frequency apparatus switch; The control button is connected to the corresponding port of controller, can realize the switching of hand switch machine control mode and the digital audio and video signals switching on and shutting down control mode of audio frequency apparatus.
Shown in Fig. 4-1, the digital audio and video signals receiving circuit of present embodiment two and embodiment one is identical with the set-up mode of decoder, does not repeat them here, and wherein the decoder circuit schematic diagram of embodiment two is shown in Fig. 2-3-1, Fig. 2-3-2 and Fig. 2-3-3.Shown in Fig. 4-3-1 and Fig. 4-3-2, present embodiment two is basic identical with power supply and the switching circuit of the present embodiment two of embodiment one, distinguishes the electronic switch that is present embodiment two and selects NPN triode Q301 and field effect transistor Q302 to realize; Shown in Fig. 4-2, it is the single-chip microcomputer U201 of STM8S105K4 that the controller of present embodiment two adopts model, the 24th pin of single-chip microcomputer U201 links to each other with the 14th pin of chip U101, and the 3rd pin of single-chip microcomputer U201 is connected to the base stage of triode Q301 by resistance R 301.
The operation principle of present embodiment two is:
After digital received chip CS8416 success discriminating digit audio signal, the 14th pin output low level signal of chip CS8416, this signal can be inputted the controller that serves as with single-chip microcomputer STM8S105K4, controller is exported high level signal by its 3rd pin to triode Q301 according to the setting of program, make triode Q301 output low level, field effect transistor Q302 conducting, decoder obtain power supply start work, and this device is finished the Auto Power On action;
When digital received chip CS8416 can not successfully identify input digital audio signal, such as without input, the input situation such as invalid the time, the 14th pin of chip CS8416 can become high level by low level, controller is according to the setting of this level variable signal and program, to triode Q301 output low level signal, make triode Q301 output high level by its 3rd pin, field effect transistor Q302 is in off-state, the automatic shutdown action is finished in the shutdown of decoder dead electricity, this device.
The auto powering on/off apparatus of above-described embodiment is applicable to S/PDIF, IEC-60958, AES3, EBU, and the digital audio and video signals commonly used such as EIAJ CP1201.
Execution mode of the present utility model is not limited to this, for example, difference according to the applied audio frequency apparatus of the utility model auto powering on/off apparatus, such as front preamplifier, power amplifier, Earphone Amplifier, audio decoder, the equipment such as audio equalizer, it is DIR9001 that digital audio and video signals receiving chip in above-described embodiment can adopt model, CS8416, WM8805, UDA1351TS etc. have the digital audio and video signals receiving chip of digital audio and video signals recognition function, electronic switch can adopt relay, field effect transistor, triode, thyristor, or with power supply chip of enable port etc., controller can be selected single-chip microcomputer, CPLD, the controllers such as FPGA, the so same automatic switch that can realize audio frequency apparatus.
According to foregoing, ordinary skill knowledge and customary means according to this area, do not breaking away under the above-mentioned basic fundamental thought of the utility model prerequisite, equivalent modifications, replacement or change that the utility model can also be made other various ways all can realize the utility model purpose.
Claims (4)
1. audio frequency apparatus auto powering on/off apparatus based on digital audio and video signals is characterized in that: described auto powering on/off apparatus comprises for the Digital Audio Transmission interface that receives digital audio and video signals, has the digital audio and video signals receiving chip of digital audio and video signals recognition function and be used for the electronic switch of control audio frequency apparatus switching on and shutting down; The control end of described Digital Audio Transmission interface and electronic switch is connected respectively to the corresponding port of digital audio and video signals receiving chip, identify the digital audio and video signals that described Digital Audio Transmission interface receives based on success, described digital audio and video signals receiving chip is exported corresponding logic level signal, automatically controls audio frequency apparatus switching electricity by described electronic switch.
2. audio frequency apparatus auto powering on/off apparatus according to claim 1 is characterized in that: described auto powering on/off apparatus also comprises for the controller that switches the audio frequency apparatus power on-off modes; The control end of described electronic switch is connected to the corresponding port of digital audio and video signals receiving chip by described controller.
3. audio frequency apparatus auto powering on/off apparatus according to claim 2 is characterized in that: described auto powering on/off apparatus also comprises for the manual control button of the described audio frequency apparatus switch of control; Described control button is connected to the corresponding port of described controller.
4. according to claim 1 to 3 each described audio frequency apparatus auto powering on/off apparatus, it is characterized in that: described Digital Audio Transmission interface comprises bnc interface, RCA interface and Optical Fiber Transmission interface, and described bnc interface, RCA interface and Optical Fiber Transmission interface are connected respectively to the corresponding port of digital audio and video signals receiving chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220445214.6U CN202841486U (en) | 2012-09-03 | 2012-09-03 | Automatic switch device based on digital audio signals and used for audio device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220445214.6U CN202841486U (en) | 2012-09-03 | 2012-09-03 | Automatic switch device based on digital audio signals and used for audio device |
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| CN202841486U true CN202841486U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220445214.6U Expired - Lifetime CN202841486U (en) | 2012-09-03 | 2012-09-03 | Automatic switch device based on digital audio signals and used for audio device |
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| CN (1) | CN202841486U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539990A (en) * | 2014-12-29 | 2015-04-22 | 深圳市九洲电器有限公司 | Set top box signal output control circuit and set top box |
| CN104954939A (en) * | 2015-06-03 | 2015-09-30 | 广东欧珀移动通信有限公司 | Power amplifier of earphone and method for controlling power amplifier of earphone |
-
2012
- 2012-09-03 CN CN201220445214.6U patent/CN202841486U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539990A (en) * | 2014-12-29 | 2015-04-22 | 深圳市九洲电器有限公司 | Set top box signal output control circuit and set top box |
| CN104539990B (en) * | 2014-12-29 | 2017-12-29 | 深圳市九洲电器有限公司 | Set-top box signal output control circuit and set top box |
| CN104954939A (en) * | 2015-06-03 | 2015-09-30 | 广东欧珀移动通信有限公司 | Power amplifier of earphone and method for controlling power amplifier of earphone |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20130327 |
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| CX01 | Expiry of patent term |