CN103634725A - Method and device for controlling silence - Google Patents
Method and device for controlling silence Download PDFInfo
- Publication number
- CN103634725A CN103634725A CN201310659435.2A CN201310659435A CN103634725A CN 103634725 A CN103634725 A CN 103634725A CN 201310659435 A CN201310659435 A CN 201310659435A CN 103634725 A CN103634725 A CN 103634725A
- Authority
- CN
- China
- Prior art keywords
- controlled device
- normal working
- voltage
- described controlled
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to the field of electronic control, and discloses a method for controlling silence. The method includes detecting working voltages of a controlled device; judging whether the working voltages of the controlled device are in a normal working voltage state or not; executing silence requesting or silence canceling control instructions of a master control device if the working voltages of the controlled device are in the normal working voltage state; enabling the controlled device to execute silence control instructions when the working voltages of the controlled device are not in the normal working voltage state. The method has the advantages that abnormal sound due to unstable voltages can be prevented, and the quality of products can be improved.
Description
Technical field
The present invention relates to field of electric control, particularly a kind of mute control method and circuit.
Background technology
Current most of in-vehicle multi-media system has use power amplifier, but in car under power supply environment complicated and changeable, often occur some irksome abnormal sounds (as plosive), have a strong impact on quality and the audio visual effect of product, it is mainly caused by spread of voltage.
The control mode of existing a lot of electronic device (as power amplifier) is by the single-ended control in master control side, as shown in Figure 1, the system status information (as current voltage state) detecting when master control side and prosecution (as power amplifier) occurs nonsynchronous time, just there will be the wrong problem of controlling.
With a concrete example, this problem is described below:
Suppose that master control side is main control chip, prosecution is power amplifier, system mode is current voltage state, because the power supply of main control chip and power amplifier is to be responsible for by different modules, so voltage status is divided into again master control side's voltage status (being main control chip voltage status) and prosecution voltage status (power amplifier voltage state).
When main control chip enters normal operating conditions, cancel the quiet of power amplifier, but now power amplifier end may be also in non-normal working voltage, thereby cause power amplifier to send abnormal sound.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of mute control method and circuit, for avoiding, due to the abnormal sound that spread of voltage causes, sends, and improves product quality.
A kind of mute control method that the embodiment of the present invention provides, comprises master control set and controlled device, comprising:
Detect controlled device operating voltage,
Judge that whether described controlled device operating voltage is in normal working voltage state,
When described controlled device operating voltage is during in normal working voltage state, carry out the request of described master control set quiet or cancel quiet control command,
When described controlled device operating voltage is not during in normal working voltage state, described controlled device is carried out quiet control command.
Alternatively, judging that described controlled device operating voltage whether before normal working voltage state, also comprises the magnitude of voltage of default described controlled device normal working voltage state.
Alternatively, judge that whether described controlled device operating voltage is in normal working voltage state, specifically the described controlled device operating voltage detecting is compared with the magnitude of voltage of the described controlled device normal working voltage state of presetting.
Alternatively, described controlled device is power amplifier.
The present invention also provides a kind of muting control circuit, comprises master control set and controlled device, also comprises testing circuit and logic decision circuit, and described testing circuit is connected with described logic decision circuit and controlled device respectively, for detection of controlled device operating voltage,
Described logic decision circuit is also connected with described master control set and described controlled device respectively, for judging that whether described controlled device operating voltage is in normal working voltage state,
When described controlled device operating voltage is during in normal working voltage state, it is quiet or cancel quiet control command that described controlled device is carried out the request of described master control set,
When described controlled device operating voltage is not during in normal working voltage state, described controlled device is carried out quiet control command.
Alternatively, also comprise preinstalled circuit, described preinstalled circuit is for the magnitude of voltage of default described controlled device normal working voltage state.
Alternatively, described logic decision circuit is used for judging that whether described controlled device operating voltage is in normal working voltage state, and the described controlled device operating voltage that specifically described logic decision circuit detects described testing circuit is compared with the magnitude of voltage of the described controlled device normal working voltage state of presetting.
Alternatively, described controlled device is power amplifier.
Alternatively, described testing circuit and logic decision circuit are comprised of voltage comparator and voltage stabilizing didoe.
Therefore application the present embodiment technical scheme, due at spread of voltage, while causing controlled device to be operated under improper environment, controls described controlled device quiet, and then can avoid now abnormal sound to send, and improves product quality and audio visual effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is quiet control schematic diagram of the prior art;
Fig. 2 is a kind of mute control method flow chart provided by the invention;
Fig. 3 is another kind of mute control method flow chart provided by the invention;
Fig. 4 is a kind of muting control circuit structural representation provided by the invention;
Fig. 5 is a kind of muting control circuit figure provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
embodiment 1:
The present embodiment provides a kind of mute control method, comprises master control set and controlled device, as shown in Figure 2, comprising:
101, detect controlled device operating voltage.
102, judge that whether described controlled device operating voltage is in normal working voltage state.Can be, but not limited to, judging that described controlled device operating voltage whether before normal working voltage state, also comprises the magnitude of voltage of default described controlled device normal working voltage state.
103,, when described controlled device operating voltage is during in normal working voltage state, carry out the request of described master control set quiet or cancel quiet control command.
104, when described controlled device operating voltage is not during in normal working voltage state, described controlled device is carried out quiet control command.
Can be, but not limited to, described controlled device is power amplifier.
Can be, but not limited to, as shown in Figure 3,102, judge that whether described controlled device operating voltage is in normal working voltage state, specifically,
202, the described controlled device operating voltage detecting is compared with the magnitude of voltage of the described controlled device normal working voltage state of presetting.Step 201,203,204 is referring to step 101,103,104.
Therefore when described controlled device operating voltage is not during in normal working voltage state, described controlled device is carried out quiet control command, and then can avoid now abnormal sound to send, and improves product quality and audio visual effect.
embodiment 2:
The present embodiment provides a kind of muting control circuit, comprise master control set 01 and controlled device 02, as shown in Figure 4, also comprise testing circuit 05 and logic decision circuit 06, described testing circuit 05 is connected with described logic decision circuit 06 and controlled device 02 respectively, for detection of controlled device 02 operating voltage
Described logic decision circuit 06 is also connected with described master control set 01 and described controlled device 02 respectively, for judging that whether described controlled device 02 operating voltage is in normal working voltage state,
When described controlled device 02 operating voltage is during in normal working voltage state, request that described controlled device 02 is carried out described master control set 01 is quiet or cancel quiet control command,
When described controlled device 02 operating voltage is not during in normal working voltage state, described controlled device 02 is carried out quiet control command.
Can be, but not limited to, also comprise preinstalled circuit, for the magnitude of voltage of default described controlled device 02 normal working voltage state.
Described logic decision circuit 06 is for judging that whether described controlled device 02 operating voltage is in normal working voltage state, and described controlled device 02 operating voltage that specifically described logic decision circuit 06 detects described testing circuit 05 is compared with the magnitude of voltage of the described controlled device 02 normal working voltage state of presetting.
Can be, but not limited to, described controlled device 02 is power amplifier.
Power supply 03 and power supply 04 are respectively the power supplies of described master control set 01, controlled device 02.
Therefore, due to being used in combination of testing circuit and logic decision circuit, make at spread of voltage, while causing controlled device to be operated under improper environment, control described controlled device quiet, and then can avoid now abnormal sound to send, improve product quality and audio visual effect.
embodiment 3:
A kind of muting control circuit that the present embodiment provides, be with the difference of embodiment 2, as shown in Figure 5, described testing circuit and described logic decision circuit are by voltage comparator U1, voltage stabilizing didoe D1, voltage stabilizing didoe D3, resistance R 13 and other resistance R 1 to R3, and the components and parts such as R5 to R12, capacitor C 1 to C3, diode D2 and triode Q1 and Q2 form.
When the anodal input voltage of voltage comparator U1 is during lower than the input voltage of negative pole, shown in voltage comparator U1 will output low level, can be, but not limited to described voltage comparator U1 is LTC1841CS8 comparator.
By described voltage comparator U1, detect the magnitude of voltage and a relative fixed voltage value of relatively more detected device, can be, but not limited to described fixed voltage value is 8.7V, when the magnitude of voltage of described detected device is during lower than a certain fixed voltage value, quiet by is formed logical circuit control power amplifier by voltage stabilizing didoe D1, voltage stabilizing didoe D3 and R13.Certainly, if it is quiet to control power amplifier by aggressive device 01, be also fine.As long as cause is for being comprised of voltage stabilizing didoe D1, voltage stabilizing didoe D3 and R13, logical circuit detects described voltage comparator U1 output low level or master control set 01 output low level asks quiet control command, all can trigger described controlled device 02 quiet.
Can be, but not limited to, described voltage stabilizing didoe D1, voltage stabilizing didoe D3 are RB751V40 voltage stabilizing didoe.
Therefore, when the supply power voltage of described controlled device 02 abnormal, but program does not detect electric voltage exception or detect to postpone, this circuit can be by adaptive control controlled device 02, for example power amplifier is quiet, avoids the generation of the noises such as explosion sound.
Above-described execution mode, does not form the restriction to this technical scheme protection range.The modification of doing within any spirit at above-mentioned execution mode and principle, be equal to and replace and improvement etc., within all should being included in the protection range of this technical scheme.
Claims (9)
1. a mute control method, comprises master control set and controlled device, it is characterized in that, comprising:
Detect controlled device operating voltage,
Judge that whether described controlled device operating voltage is in normal working voltage state,
When described controlled device operating voltage is during in normal working voltage state, carry out the request of described master control set quiet or cancel quiet control command,
When described controlled device operating voltage is not during in normal working voltage state, described controlled device is carried out quiet control command.
2. a kind of mute control method as claimed in claim 1, is characterized in that, is judging that described controlled device operating voltage whether before normal working voltage state, also comprises the magnitude of voltage of default described controlled device normal working voltage state.
3. a kind of mute control method as claimed in claim 2, it is characterized in that, judge that whether described controlled device operating voltage is in normal working voltage state, specifically the described controlled device operating voltage detecting is compared with the magnitude of voltage of the described controlled device normal working voltage state of presetting.
4. as a kind of mute control method as described in arbitrary in claims 1 to 3, it is characterized in that, described controlled device is power amplifier.
5. a muting control circuit, comprises master control set and controlled device, it is characterized in that, also comprises testing circuit and logic decision circuit, and described testing circuit is connected with described logic decision circuit and controlled device respectively, for detection of controlled device operating voltage,
Described logic decision circuit is also connected with described master control set and described controlled device respectively, for judging that whether described controlled device operating voltage is in normal working voltage state,
When described controlled device operating voltage is during in normal working voltage state, it is quiet or cancel quiet control command that described controlled device is carried out the request of described master control set,
When described controlled device operating voltage is not during in normal working voltage state, described controlled device is carried out quiet control command.
6. a kind of muting control circuit as claimed in claim 5, is characterized in that, also comprises preinstalled circuit, and described preinstalled circuit is for the magnitude of voltage of default described controlled device normal working voltage state.
7. a kind of muting control circuit as claimed in claim 6, it is characterized in that, described logic decision circuit is used for judging that whether described controlled device operating voltage is in normal working voltage state, and the described controlled device operating voltage that specifically described logic decision circuit detects described testing circuit is compared with the magnitude of voltage of the described controlled device normal working voltage state of presetting.
8. a kind of muting control circuit as claimed in claim 5, is characterized in that, described controlled device is power amplifier.
9. as a kind of muting control circuit as described in arbitrary in claim 5 to 8, it is characterized in that, described testing circuit and logic decision circuit are comprised of voltage comparator and voltage stabilizing didoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659435.2A CN103634725A (en) | 2013-12-10 | 2013-12-10 | Method and device for controlling silence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659435.2A CN103634725A (en) | 2013-12-10 | 2013-12-10 | Method and device for controlling silence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103634725A true CN103634725A (en) | 2014-03-12 |
Family
ID=50215278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310659435.2A Pending CN103634725A (en) | 2013-12-10 | 2013-12-10 | Method and device for controlling silence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103634725A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111094A (en) * | 2006-07-21 | 2008-01-23 | 大同股份有限公司 | Noise preventing module and its public address set |
| CN102118669A (en) * | 2009-12-30 | 2011-07-06 | 鸿富锦精密工业（深圳）有限公司 | Audio device |
| CN202221904U (en) * | 2011-08-19 | 2012-05-16 | 惠州市德赛西威汽车电子有限公司 | Vehicle-loaded battery electricity quantity monitoring device |
| US20120237057A1 (en) * | 2011-03-18 | 2012-09-20 | Hon Hai Precision Industry Co., Ltd. | Audio driver circuit |
| CN202759580U (en) * | 2012-08-20 | 2013-02-27 | 深圳Tcl新技术有限公司 | Audio equipment and circuit for removing switching-on/off noise of audio equipment |
-
2013
- 2013-12-10 CN CN201310659435.2A patent/CN103634725A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111094A (en) * | 2006-07-21 | 2008-01-23 | 大同股份有限公司 | Noise preventing module and its public address set |
| CN102118669A (en) * | 2009-12-30 | 2011-07-06 | 鸿富锦精密工业（深圳）有限公司 | Audio device |
| US20120237057A1 (en) * | 2011-03-18 | 2012-09-20 | Hon Hai Precision Industry Co., Ltd. | Audio driver circuit |
| CN202221904U (en) * | 2011-08-19 | 2012-05-16 | 惠州市德赛西威汽车电子有限公司 | Vehicle-loaded battery electricity quantity monitoring device |
| CN202759580U (en) * | 2012-08-20 | 2013-02-27 | 深圳Tcl新技术有限公司 | Audio equipment and circuit for removing switching-on/off noise of audio equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103386934B (en) | The electric supply installation of vehicle electronic device and method | |
| CN103983894A (en) | Jack detector and jack detecting method | |
| US9778711B2 (en) | Control device and reset system utilizing the same | |
| TW201338405A (en) | Earphone jack drive circuit | |
| EP2922309A1 (en) | Method of using light sensor earphone to control electronic device and light sensor earphone | |
| JP2011254188A5 (en) | ||
| US20120249085A1 (en) | Method For Controlling Charging Current | |
| EP3079043A1 (en) | Interference suppression method and apparatus for touch screen and terminal device | |
| JP2018032221A5 (en) | ||
| JP2014166135A5 (en) | ||
| JP2015007903A (en) | Voltage regulator | |
| MX2022003629A (en) | Load control device for controlling a driver for a lighting load. | |
| TWI517518B (en) | Method for communicating electronic apparatus with adaptor via specific communicaiton interface to adjust operation behavior of adaptor, electronic apparatus, and corresponding adaptor | |
| CN102201697B (en) | Internet device and charging inlet automatic switching method, device and circuit | |
| CN103634725A (en) | Method and device for controlling silence | |
| CN106412761B (en) | Embedded speaker protection for automotive audio power amplifier | |
| TWI554887B (en) | System and method for charging an electronic device | |
| CN104049143A (en) | Device and method for commercial power detection | |
| JP2010028357A (en) | Output buffer circuit | |
| JP4894919B2 (en) | Relay circuit, information processing apparatus, and relay method | |
| US9122295B2 (en) | Power supply apparatus with reducing voltage overshooting | |
| US20150219711A1 (en) | Apparatus for determining deterioration of photocoupler | |
| US20140258750A1 (en) | Control system and method for server | |
| US9502965B1 (en) | Burst mode power supply method and burst mode power supply apparatus | |
| JP5266830B2 (en) | Self-excited class D amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 516006 Guangdong province Huizhou City Zhongkai high tech Zone and five West Road No. 103 Applicant after: HUIZHOU DESAY SV AUTOMOTIVE CO., LTD. Address before: 516006 Guangdong province Huizhou City Zhongkai high tech Zone and five West Road No. 103 Applicant before: Huizhou Desay SV Auto. Electronics Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140312 |