CN201393273Y - Automatic sound regulation device of TV set and TV set - Google Patents
Automatic sound regulation device of TV set and TV set Download PDFInfo
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- CN201393273Y CN201393273Y CN200920068371U CN200920068371U CN201393273Y CN 201393273 Y CN201393273 Y CN 201393273Y CN 200920068371 U CN200920068371 U CN 200920068371U CN 200920068371 U CN200920068371 U CN 200920068371U CN 201393273 Y CN201393273 Y CN 201393273Y
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Abstract
The utility model relates to an automatic sound regulation device of a TV set and the TV set to dynamically regulate the output volume of a loudspeaker. The automatic sound regulation device comprises: a conversion unit, a closed-loop feedback circuit and a voltage regulation unit; the conversion unit is used for converting a volume value set by the user into a set voltage and inputting the set voltage to an audio processing module of the TV set; the closed-ring feedback circuit is connected with the output end of a power amplification circuit of the TV set and the audio processing module and used for measuring the actual voltage and feeding the actual voltage back to the audio processing module; and the voltage regulation unit is arranged in the audio processing module and used for dynamically regulating the voltage value of a second audio signal according to the relationship between the actual voltage and the set voltage so as to lead the actual voltage to be within a voltage range that takes the product of the set voltage and an amplification factor as a reference. The utility model can avoid the occurrence of sound volume instability when in channel switching, which is caused by different magnitudes of sound signals of different channels in the Chinese radio and television signals.
Description
Technical field
The utility model relates to television set, especially relates to the sound automatic regulating equipment of avoiding television sound suddenly big or suddenly small.
Background technology
In a television set, usually will be to television field frame, loud speaker output is handled, amplifies, arrived to the audio input signal that each input terminal comes.The block diagram of TV sound intermediate frequency processing at present at first carries out demodulation to the audio signal 10 of input as shown in Figure 1 in audio processing modules 11, after amplifying through power amplifier 12, output to loud speaker 13 and play.Wherein the user can adjust the multiplication factor of power amplifier 12 by adjusting volume.
As seen structure shown in Figure 1 is common open loop structure for amplifying, and the volume of loud speaker 13 outputs not only depends on the volume value that the user is provided with, but also depends on the signal magnitude of information source.Generally speaking, the user is in the process of switching channels, and the volume value that the user is provided with is constant, but owing to there is problem such as audio frequency ovennodulation in the broadcast television signal of China, ovennodulation in the TV signal of each channel is also different, and promptly the sound source signals that receives of television set is in different size.So just make that can to occur some channel sound in the process of switching channels too high, and some channel sound is low excessively, or same channel sound is high sometimes, low sometimes problem has been brought the bad experience of watching to the user.
The utility model content
The suddenly big or suddenly small problem of sound during for fear of switching channels that the phenomenon that varies owing to the voice signal in the Chinese broadcast television signal produces, the utility model provides a kind of sound automatic regulating equipment of television set.
The utility model is to solve the problems of the technologies described above the sound automatic regulating equipment that the technical scheme that adopts provides a kind of television set, and in order to dynamically to adjust the output volume of loud speaker, this television set comprises audio processing modules, power amplifier and loud speaker.Audio processing modules is exported second audio signal in order to receive first audio signal of importing and to handle.Power amplifier connects the output of this audio processing modules, in order to amplify this second audio signal according to a multiplication factor, exports the 3rd audio signal.Loud speaker connects the output of this power amplifier, and in order to play the 3rd audio signal, wherein the 3rd audio signal has a virtual voltage.This sound automatic regulating equipment comprises converting unit, closed loop feedback circuit and voltage-regulation unit.Converting unit is converted to a setting voltage in order to the volume value that the user is set, and inputs to this audio processing modules.The closed loop feedback circuit connects output and this audio processing modules of power amplifier, in order to measure this virtual voltage and to feed back to this audio processing modules.The voltage-regulation unit is located in this audio processing modules, dynamically adjust the magnitude of voltage of this second audio signal according to the relation of this virtual voltage and this setting voltage, the product that this virtual voltage is positioned at this setting voltage and described multiplication factor is the voltage range of benchmark.
In the sound automatic regulating equipment of above-mentioned television set, this converting unit is a lookup unit, the mapping table of prestore in this lookup unit a volume value and voltage.
In the sound automatic regulating equipment of above-mentioned television set, this closed loop feedback circuit is an automatic synchronous pll.
The utility model also proposes a kind of television set, and it comprises above-mentioned sound automatic regulating equipment.
The utility model is owing to adopt above technical scheme, make it compared with prior art, because the virtual voltage of loud speaker 23 can be consistent with the voltage range of the volume value decision that is set by the user regularly, and can not be subjected to the influence of sound source signal size, thereby the suddenly big or suddenly small problem of sound during the switching channels of avoiding producing owing to phenomenon that the voice signal in the Chinese broadcast television signal varies.
Description of drawings
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, wherein:
Fig. 1 illustrates the Audio Processing structural representation of existing television set.
Fig. 2 illustrates the sound automatic regulating equipment structural representation according to the television set of the utility model one embodiment.
Embodiment
Fig. 2 illustrates the sound automatic regulating equipment structural representation according to the television set of the utility model one embodiment.Please refer to shown in Figure 2ly, in television set 200, comprised audio processing modules 21, power amplifier 22 and loud speaker 23.After one or more first audio signal Sig1 in the TV signal of audio processing modules 21 reception inputs handle (as decoding), export the treated second audio signal Sig2.Power amplifier 22 connects the output of audio processing modules 21, amplify second audio signal according to a multiplication factor m, the 3rd audio signal Sig3 that the output process is amplified is to loud speaker 23, and promptly the voltage between the 3rd audio signal and second audio signal satisfies: Vsig3=Vsig2*m.Loud speaker 23 is connected in the output of power amplifier 22, in order to receive and to play the 3rd audio signal Sig3.
Owing to have ovennodulation in the Chinese TV broadcast singal, promptly the input signal of each channel have big, what have is little.That is to say the first audio signal voltage difference of each channel of input audio processing modules 21.If this situation is not handled, cause through exporting the 3rd audio signal Sig3 voltage difference of loud speaker 23 after processing and the amplification to.Thereby when the user switches to a new channel, new channel might sound than original channel big many or little many, this moment loud speaker 23 volume can be than the time with the original identical volume value of channel loud speaker give great volume many or little many.
For fear of this situation,, form the sound automatic regulating equipment by converting unit 24, closed loop feedback circuit 25 and voltage-regulation unit 26 according to embodiment of the present utility model.Wherein converting unit 24 is connected to audio processing modules 21, and closed loop feedback circuit 25 connects the output and the audio processing modules 21 of power amplifier 22.Voltage-regulation unit 26 can be located in this audio processing modules, and can adopt the mode of hardware or software programming to realize.In one embodiment, closed loop feedback circuit 25 can be an automatic synchronous pll.
Prestore the relation of the voltage of the volume values at different levels of television set and loud speaker in the converting unit 24, this relation can be characterized by curve or relation table, the volume value that can when needed the user be set is converted to a setting voltage, and inputs to this audio processing modules.For example, in the development process of television set, each volume value of television set (as 0-60) is provided with, the relevant information of output voltage of the loud speaker of corresponding each volume value is set according to the characteristic of certain signal source and loud speaker.The relevant information of the loud speaker output voltage of these volume value correspondences can be stored in converting unit 24 the insides.In one embodiment, when storing the corresponding relation of volume value and loud speaker output voltage with form, converting unit 24 is equal to a lookup unit, and it can find pairing loud speaker output voltage according to the volume value that the user sets from form, and this voltage is called setting voltage Vset.
When the user regulates volume, in converting unit 24, read out the pairing setting voltage Vset of this volume value.The audio signal input after audio processing modules 21 processing, is amplified after loud speaker 23 is play by power amplifier 22 again.Before loud speaker 23 outputs, measure the virtual voltage of loud speaker 23, promptly the 3rd audio signal voltage Vsig3 feeds back to audio processing modules 21 with measured value through closed loop feedback circuit 25.In audio processing modules 21, audio signal is decoded etc. handle in, also be provided with voltage-regulation unit 26, this voltage-regulation unit 26 can dynamically be adjusted the magnitude of voltage Vsig2 of second audio signal of audio processing modules 21 outputs according to the relation of virtual voltage Vsig3 and setting voltage Vset, and virtual voltage is controlled in the voltage range of setting.Specifically, be benchmark with the product Vset*m of this setting voltage and multiplication factor, get suitable admissible error (as ± 3%), when magnitude of voltage Vsig2 is positioned at this scope, think that promptly voltage-regulation finishes.
When the user switched to a new channel, the actual voltage value Vsig3 ' of the corresponding loud speaker of new channel can dynamically be fed back to voltage-regulation unit 26 by closed loop feedback circuit 25.At this moment, voltage-regulation unit 26 also can dynamically be adjusted the magnitude of voltage Vsig2 of second audio signal according to the relation of virtual voltage Vsig3 ' and setting voltage Vset, and virtual voltage is controlled in the voltage range of setting.Promptly the product Vset*m with this setting voltage and multiplication factor is a benchmark, gets suitable admissible error (as ± 3%), when magnitude of voltage Vsig2 is positioned at this scope, thinks that promptly voltage-regulation finishes.
By above-mentioned adjustment process, the actual output voltage of loud speaker 23 can be consistent with the voltage range of the volume value decision that is set by the user regularly, and can not be subjected to the influence of sound source signal (i.e. the first audio signal Sig1) size, thereby little problem when big when the sound of loud speaker 23 can not occur again.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; any those skilled in the art; in not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection range of the present utility model is worked as with being as the criterion that claims were defined.
Claims (6)
1. the sound automatic regulating equipment of a television set, in order to dynamically to adjust the output volume of loud speaker, this television set comprises:
Audio processing modules in order to receive first audio signal of importing and to handle, is exported second audio signal;
Power amplifier connects the output of this audio processing modules, in order to amplify this second audio signal according to a multiplication factor, exports the 3rd audio signal;
Loud speaker connects the output of this power amplifier, and in order to play the 3rd audio signal, wherein the 3rd audio signal has a virtual voltage;
It is characterized in that this voice actuated device comprises:
Converting unit is converted to a setting voltage in order to the volume value that the user is set, and inputs to this audio processing modules;
The closed loop feedback circuit, output and this audio processing modules of connection power amplifier are in order to measure this virtual voltage and to feed back to this audio processing modules;
The voltage-regulation unit, be located at this voltage-regulation unit of this Audio Processing mould and dynamically adjust the magnitude of voltage of this second audio signal according to the relation of this virtual voltage and this setting voltage, the product that this virtual voltage is positioned at this setting voltage and described multiplication factor is the voltage range of benchmark.
2. the sound automatic regulating equipment of television set as claimed in claim 1 is characterized in that, this converting unit is a lookup unit, the mapping table of prestore in this lookup unit a volume value and voltage.
3. the sound automatic regulating equipment of television set as claimed in claim 1 is characterized in that, this closed loop feedback circuit is an automatic synchronous pll.
4. television set comprises:
Audio processing modules in order to receive first audio signal of importing and to handle, is exported second audio signal;
Power amplifier connects the output of this audio processing modules, in order to amplify this second audio signal according to a multiplication factor, exports the 3rd audio signal;
Loud speaker connects the output of this power amplifier, and in order to play the 3rd audio signal, wherein the 3rd audio signal has a virtual voltage;
It is characterized in that this television set also comprises a sound automatic regulating equipment, this sound automatic regulating equipment comprises:
Converting unit is converted to a setting voltage in order to the volume value that the user is set, and inputs to this audio processing modules;
The closed loop feedback circuit, output and this audio processing modules of connection power amplifier are in order to measure this virtual voltage and to feed back to this audio processing modules;
One voltage-regulation unit, be located in this audio processing modules, the magnitude of voltage of this second audio signal is dynamically adjusted according to the relation of this virtual voltage and this setting voltage in this voltage-regulation unit, and the product that this virtual voltage is positioned at this setting voltage and described multiplication factor is the voltage range of benchmark.
5. television set as claimed in claim 4 is characterized in that, this converting unit is a lookup unit, the mapping table of prestore in this lookup unit a volume value and voltage.
6. television set as claimed in claim 4 is characterized in that, this closed loop feedback circuit is an automatic synchronous pll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920068371U CN201393273Y (en) | 2009-03-04 | 2009-03-04 | Automatic sound regulation device of TV set and TV set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920068371U CN201393273Y (en) | 2009-03-04 | 2009-03-04 | Automatic sound regulation device of TV set and TV set |
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| CN201393273Y true CN201393273Y (en) | 2010-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200920068371U Expired - Fee Related CN201393273Y (en) | 2009-03-04 | 2009-03-04 | Automatic sound regulation device of TV set and TV set |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152629A (en) * | 2013-03-28 | 2013-06-12 | 河南有线电视网络集团有限公司 | Volume regulating method and device |
| CN103929140A (en) * | 2014-04-30 | 2014-07-16 | 深圳市中兴移动通信有限公司 | Method and device for pre-processing voice frequency |
| CN104158969A (en) * | 2014-08-18 | 2014-11-19 | 青岛蓝图文化传播有限公司市南分公司 | Mobile phone volume adjusting device |
| CN104158967A (en) * | 2014-08-18 | 2014-11-19 | 青岛蓝图文化传播有限公司市南分公司 | Voice circuit controlled based on DSP |
| CN104202467A (en) * | 2014-08-21 | 2014-12-10 | 青岛蓝图文化传播有限公司市南分公司 | Volume control system |
| CN104363510A (en) * | 2014-10-29 | 2015-02-18 | 深圳市金立通信设备有限公司 | Terminal |
| CN105392049A (en) * | 2015-10-28 | 2016-03-09 | 青岛海信电器股份有限公司 | Audio gain adjustment method, screen-side equipment, master control board and separated TV |
| CN106162320A (en) * | 2016-07-27 | 2016-11-23 | 青岛海信电器股份有限公司 | Method for regulation of sound volume and device |
| CN112153315A (en) * | 2020-08-31 | 2020-12-29 | 惠州高盛达智显科技有限公司 | Signal source channel sound sensitivity adjusting method and system based on power protection feedback |
-
2009
- 2009-03-04 CN CN200920068371U patent/CN201393273Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152629A (en) * | 2013-03-28 | 2013-06-12 | 河南有线电视网络集团有限公司 | Volume regulating method and device |
| CN103152629B (en) * | 2013-03-28 | 2016-08-17 | 河南有线电视网络集团有限公司 | A kind of volume adjusting method and device |
| CN103929140A (en) * | 2014-04-30 | 2014-07-16 | 深圳市中兴移动通信有限公司 | Method and device for pre-processing voice frequency |
| CN104158969A (en) * | 2014-08-18 | 2014-11-19 | 青岛蓝图文化传播有限公司市南分公司 | Mobile phone volume adjusting device |
| CN104158967A (en) * | 2014-08-18 | 2014-11-19 | 青岛蓝图文化传播有限公司市南分公司 | Voice circuit controlled based on DSP |
| CN104202467A (en) * | 2014-08-21 | 2014-12-10 | 青岛蓝图文化传播有限公司市南分公司 | Volume control system |
| CN104363510A (en) * | 2014-10-29 | 2015-02-18 | 深圳市金立通信设备有限公司 | Terminal |
| CN105392049A (en) * | 2015-10-28 | 2016-03-09 | 青岛海信电器股份有限公司 | Audio gain adjustment method, screen-side equipment, master control board and separated TV |
| CN106162320A (en) * | 2016-07-27 | 2016-11-23 | 青岛海信电器股份有限公司 | Method for regulation of sound volume and device |
| CN106162320B (en) * | 2016-07-27 | 2019-05-07 | 青岛海信电器股份有限公司 | Method for regulation of sound volume and device |
| CN112153315A (en) * | 2020-08-31 | 2020-12-29 | 惠州高盛达智显科技有限公司 | Signal source channel sound sensitivity adjusting method and system based on power protection feedback |
| CN112153315B (en) * | 2020-08-31 | 2023-08-11 | 惠州高盛达智显科技有限公司 | Signal source channel sound sensitivity adjusting method and system based on power protection feedback |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100127 Termination date: 20120304 |