CN101459414B - Video and audio playing device and volume control method - Google Patents
Video and audio playing device and volume control method Download PDFInfo
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- CN101459414B CN101459414B CN2007101249929A CN200710124992A CN101459414B CN 101459414 B CN101459414 B CN 101459414B CN 2007101249929 A CN2007101249929 A CN 2007101249929A CN 200710124992 A CN200710124992 A CN 200710124992A CN 101459414 B CN101459414 B CN 101459414B
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Abstract
The invention provides an image and sound playing device and a volume control method, wherein the image and sound playing device comprises a signal input line for receiving sound data, a loudspeaker, a sound processing unit and a volume control unit, wherein the sound processing unit is used to process the sound data and drive the loudspeaker to play, and the volume control unit comprises a microprocessor, a first lookup chart and a sound sensor, the sound sensor is used to sense the strength of external environment noise and output an external noise signal to the microprocessor, the first lookup chart is stored with volume regulating signals relative to the external noise signal, and the microprocessor is used to obtain the relative volume regulating signal from the first lookup chart and input to the sound process unit.
Description
Technical field
The invention relates to a kind of can automatic regulating volume video-audio playing device and realize the method for controlling volume of automatic regulating volume.
Background technology
Because the development of the maturation of flat panel display, video-audio playing device has spread to each corner in the daily life, as can be used for private site panel TV, be used for public place Vehicular display device or the like.Wherein, the video-audio playing device that especially is applied to the public place has become the publicity measures of a kind of main flow on the market owing to advantages such as its play content are active vividly, contain much information.
General video-audio playing device comprises a signal input line, a data processor, a display unit and a loud speaker.This signal input line is used for receiving the image that will play and the data signal of sound by the outside.This data processor is used to handle the data signal that receives and controls this display unit in view of the above and shows required image and control the required sound of this loudspeaker plays.
But this video-audio playing device is generally worked having under the situation of environmental noise.Be the passenger that talks in the outer noisy street of car, the car noise as the general source of, the environmental noise of Vehicular display device to send with vehicle itself.And under this environment, though the program that spectators might play video-audio playing device is the emotion interest very, but because the influence of environmental noise and the volume of this video-audio playing device can not be regulated automatically, spectators but can't hear the sound that video-audio playing device is play, it is inconvenient to cause this video-audio playing device to use, the shortcoming of not enough hommization.
Summary of the invention
Can not self-regulating shortcoming in order to solve prior art video-audio playing device volume, but be necessary to provide a kind of video-audio playing device of automatic regulating volume.
Simultaneously, also be necessary to provide a kind of method for controlling volume of automatic regulating volume.
A kind of video-audio playing device, it comprises that one is used to receive the signal input line of audio document, one loud speaker, one sound processing unit and a volume control unit, this sound processing unit is used to handle this voice data and drives this loudspeaker plays, this volume control unit comprises a microprocessor, one first look-up table and a sound transducer, this sound transducer is used for sensing external environment noise power and exports an external noise signal to this microprocessor, store in this first look-up table with the corresponding volume of this external noise signal and adjust signal, this microprocessor is used for obtaining corresponding volume according to this external noise signal by this first look-up table and adjusts signal and input to this sound processing unit, this video-audio playing device further comprises a second look-up table, it is connected to this microprocessor, stores the sound intensity critical value of a sign predetermined sound intensity in this second look-up table.
A kind of method for controlling volume, its step comprise provides a video-audio playing device, and it comprises a sound transducer, a microprocessor, a sound processing unit and a loud speaker; Strong and weak and produce an external noise signal by this sound transducer sensing ambient noise; Obtain a volume corresponding by this microprocessor according to this external noise signal and adjust signal with it; Adjust the volume of this loud speaker of signal controlling by this sound processing unit according to this volume, this method for controlling volume further comprises a step: detect the sound Real-time intensity of this video-audio playing device by this microprocessor, obtain a sound Real-time intensity value.
Compared with prior art, video-audio playing device of the present invention and its method for controlling volume are because noise that can the sensing external environment, and, therefore realized the automatic adjusting of volume, and then used more convenient according to the volume that the ambient noise situation is regulated this video-audio playing device.
Description of drawings
Fig. 1 is the block diagram of video-audio playing device first execution mode of the present invention.
Fig. 2 is the block diagram of video-audio playing device second execution mode of the present invention.
Embodiment
Seeing also Fig. 1, is the circuit block diagram of video-audio playing device first execution mode of the present invention.This video-audio playing device 1 comprises a signal input line 10, a graphics processing unit 20, a sound processing unit 30, a display unit 40, a loud speaker 50 and a volume control unit 60.This signal input line 10 is used for receiving the image that will play and the data of sound by the outside.This graphics processing unit 20 drives this display unit 40 according to the view data that receives and shows corresponding image.This sound processing unit 30 drives this loud speaker 50 according to the audio document that receives and plays corresponding sound.This volume control unit 60 is connected to this sound processing unit 30, is used for adjusting according to ambient noise the volume of this video-audio playing device 1.
This volume control unit 60 comprises a sound transducer 61, an analog/digital converter 62, a microprocessor 63 and a look-up table 64.This sound transducer 61 is connected to this microprocessor 63 by this analog/digital converter 62, and this microprocessor 63 is connected to this look-up table 64 and this sound processing unit 30 respectively.
This sound transducer 61 is installed in this video-audio playing device 1 outside, is used for the noise power of sensing external environment, and according to the strong and weak external noise signal that produces a simulation of the environmental noise that senses.This analog/digital converter 62 can be converted to the external noise signal of this simulation the external noise signal of numeral.This look-up table 64 stores with the corresponding volume of each digital external noise signal and adjusts signal.This microprocessor 63 can obtain corresponding volume according to the external noise signal that receives and adjust signal from this look-up table 64, and inputs to this sound processing unit 30.This sound processing unit 30 is adjusted signal according to this volume that receives and is adjusted this loud speaker 50 volumes.
Compared to prior art, video-audio playing device 1 of the present invention is owing to adopted this volume control unit 60, the noise of the sound transducer 61 sensing external environment conditions by this volume control unit 60, adjust the volume of this video-audio playing device 1 according to the noise level of external environment condition, and then make this video-audio playing device 1 easy to use, humanized.
The method for controlling volume that this video-audio playing device 1 is adopted comprises the steps:
One, sensing external environment noise is strong and weak and produce an external noise signal;
This video-audio playing device 1 utilizes this sound transducer 61 sensing external environment noises, and produces the external noise signal of this external environment noise power of sign.This sound transducer 61 can be a microphone.Because the external noise signal of these sound transducer 61 outputs is an analog signal, because analog signal decays easily in transmission course and is not easy and compares with other signal, therefore the external noise signal that utilizes this analog/digital converter 62 to simulate is converted to the external noise signal of numeral again.
Two, obtain a volume corresponding according to this external noise signal and adjust signal with it;
This microprocessor 63 receives this digital external noise signal, visits this look-up table 64 and obtains corresponding volume and adjust signal, and export this sound processing unit 30 to.Generally speaking, the volume adjustment actual volume that signal characterized external noise power big or small and that its pairing external noise signal is characterized stored in this look-up table 64 is directly proportional, promptly when external noise was strong, the volume that corresponding volume is adjusted characterization was bigger.This microprocessor 63 is adjusted signal with the volume that inquires and is exported this sound processing unit 30 to.
Three, adjust the volume that signal is adjusted the video-audio playing device loud speaker according to this volume;
This sound processing unit 30 is adjusted this loud speaker 50 of signal controlling according to the volume that receives from this microprocessor 63 and is increased or reduce volume.
Seeing also Fig. 2, is the block diagram of video-audio playing device second execution mode of the present invention.This video-audio playing device 2 is with the difference of this video-audio playing device 1: the volume control unit 260 of this video-audio playing device 2 further comprises a second look-up table 265.Store a sound Real-time intensity critical value in this second look-up table 265.This microprocessor 263 is realized the detecting strong and weak in real time to these video-audio playing device 2 sound by being connected to this sound processing unit 230.
The method for controlling volume that this video-audio playing device 2 is adopted comprises the steps:
One, the sound of detecting this video-audio playing device 2 is strong and weak in real time, obtains the in real time strong and weak value of a sound;
This microprocessor 263 reads data in this sound processing unit 230 by being connected to this sound processing unit 230, and it is strong and weak in real time to detect these video-audio playing device 2 sound, and obtains the in real time strong and weak value of a sound.
Two, judge the magnitude relationship of in real time strong and weak value of this sound and sound intensity critical value;
This sound intensity critical value that stores in this second question blank 265 characterizes a predefined sound Real-time intensity, and this predefined sound Real-time intensity is a less intensity.These microprocessor 263 these second look-up tables 265 of inquiry obtain this sound intensity critical value, and the in real time strong and weak value of sound and this sound intensity critical value are compared.When this sound in real time strong and weak during less than this sound intensity critical value, can think that the sound Real-time intensity of this video-audio playing device 2 is lower than this predefined sound Real-time intensity, this microprocessor 263 just sends a drive signal to this sound transducer 261 makes it begin to detect the external environment noise.
Three, sensing external environment noise is strong and weak and produce an external noise signal;
Four, obtain a volume corresponding according to this external noise signal and adjust signal with it;
Five, adjust the loud speaker that signal is adjusted video-audio playing device according to this volume.
Compared to first execution mode, this video-audio playing device 2 is owing to just begin to detect the external environment condition noise under the less situation of its sound Real-time intensity, reduced of the influence of this video-audio playing device 2 self sound, therefore the volume of this video-audio playing device 2 has been regulated more accurately and reliably this sound transducer 261.
It is described that video-audio playing device of the present invention is not limited to above-mentioned execution mode, also can have other change design.As: this sound transducer 61,261 can be independent of the integral body of this video-audio playing device 1,2 and be arranged on apart from far away, user use location.Sound transducer in the case can be connected with this microprocessor by wired or wireless mode.This video-audio playing device 2 can also possess this volume control unit 60 of this video-audio playing device 1 simultaneously.
Claims (8)
1. video-audio playing device, it comprises that one is used to receive the signal input line of audio document, one loud speaker and a sound processing unit, this sound processing unit is used to handle this voice data and drives this loudspeaker plays, it is characterized in that: this video-audio playing device further comprises a volume control unit, this volume control unit comprises a microprocessor, one first look-up table and a sound transducer, this sound transducer is used for sensing external environment noise power and exports an external noise signal to this microprocessor, store in this first look-up table with the corresponding volume of this external noise signal and adjust signal, this microprocessor is used for obtaining corresponding volume according to this external noise signal by this first look-up table and adjusts signal and input to this sound processing unit, this video-audio playing device further comprises a second look-up table, it is connected to this microprocessor, stores the sound intensity critical value of a sign predetermined sound intensity in this second look-up table.
2. video-audio playing device as claimed in claim 1, it is characterized in that: this microprocessor is further used for detecting this sound processing unit and obtains the in real time strong and weak value of sound of this video-audio playing device sound Real-time intensity of sign, and the sound intensity critical value in the in real time strong and weak value of this sound and this second look-up table is compared.
3. video-audio playing device as claimed in claim 2, it is characterized in that: when intensity of sound that this video-audio playing device sound Real-time intensity is characterized less than this sound intensity critical value, this microprocessor sends a drive signal to this sound transducer makes it begin to detect the external environment noise.
4. liquid crystal indicator as claimed in claim 1 is characterized in that: this sound transducer is connected to this microprocessor by an analog/digital converter.
5. method for controlling volume, it may further comprise the steps: a video-audio playing device is provided, and it comprises a sound transducer, a microprocessor, a sound processing unit and a loud speaker; Strong and weak and produce an external noise signal by this sound transducer sensing ambient noise; Obtain a volume corresponding by this microprocessor according to this external noise signal and adjust signal with it; Adjust the volume of this loud speaker of signal controlling by this sound processing unit according to this volume, this method for controlling volume further comprises a step: detect the sound Real-time intensity of this video-audio playing device by this microprocessor, obtain a sound Real-time intensity value.
6. method for controlling volume as claimed in claim 5 is characterized in that: this microprocessor obtains volume that should external noise signal is adjusted signal by inquiry one first look-up table.
7. method for controlling volume as claimed in claim 5 is characterized in that: this video-audio playing device further comprises a second look-up table, and it stores the sound intensity critical value of a sign one predefined sound Real-time intensity.
8. method for controlling volume as claimed in claim 7, it is characterized in that: this method for controlling volume further comprises a step: judge the in real time strong and weak value of this sound and this sound intensity critical value, when the sound Real-time intensity of this video-audio playing device is lower than this predefined sound Real-time intensity, this microprocessor sends a drive signal to this sound transducer, makes it begin to detect the external environment noise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101249929A CN101459414B (en) | 2007-12-12 | 2007-12-12 | Video and audio playing device and volume control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101249929A CN101459414B (en) | 2007-12-12 | 2007-12-12 | Video and audio playing device and volume control method |
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| Publication Number | Publication Date |
|---|---|
| CN101459414A CN101459414A (en) | 2009-06-17 |
| CN101459414B true CN101459414B (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101249929A Expired - Fee Related CN101459414B (en) | 2007-12-12 | 2007-12-12 | Video and audio playing device and volume control method |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299693B (en) * | 2010-06-28 | 2017-05-03 | 瀚宇彩晶股份有限公司 | Message adjustment system and method |
| CN102946560A (en) * | 2012-11-30 | 2013-02-27 | 四川长虹电器股份有限公司 | System and method for automatically adjusting audio and video parameters of televisions |
| CN105262452A (en) * | 2015-10-29 | 2016-01-20 | 小米科技有限责任公司 | Method and apparatus for adjusting volume, and terminal |
| CN105375897A (en) * | 2015-11-30 | 2016-03-02 | 北京光年无限科技有限公司 | Intelligent-robot-oriented environmental information processing method and device |
| WO2017120914A1 (en) * | 2016-01-15 | 2017-07-20 | 邓娟 | Method for adjusting volume level on the basis of surrounding environment and audio player |
| CN110154884A (en) * | 2019-04-28 | 2019-08-23 | 惠州市德赛西威智能交通技术研究院有限公司 | A kind of self-adaption regulation system and method exporting simulation engine sound |
| CN113314058A (en) * | 2021-06-07 | 2021-08-27 | 冯冬艳 | Museum entrance is with propaganda display device |
| CN115755702A (en) * | 2022-11-16 | 2023-03-07 | 星河智联汽车科技有限公司 | Noise-based in-vehicle volume control method, device, equipment and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1909365A (en) * | 2005-08-02 | 2007-02-07 | 乐金电子（昆山）电脑有限公司 | Volume automatic regulating device and its method |
| CN1972120A (en) * | 2006-11-29 | 2007-05-30 | 北京中星微电子有限公司 | A method and device for implementing adjustment of volume based on environmental noise detection |
-
2007
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1909365A (en) * | 2005-08-02 | 2007-02-07 | 乐金电子（昆山）电脑有限公司 | Volume automatic regulating device and its method |
| CN1972120A (en) * | 2006-11-29 | 2007-05-30 | 北京中星微电子有限公司 | A method and device for implementing adjustment of volume based on environmental noise detection |
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| CN101459414A (en) | 2009-06-17 |
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| ASS | Succession or assignment of patent right |
Owner name: QIMEI ELECTRONIC CO LTD Free format text: FORMER OWNER: INNOLUX DISPLAY CORPORATION |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20111021 Address after: 518109 Longhua, Shenzhen, town, Foxconn science and Technology Industrial Park E District, building 1, floor 4, Applicant after: Qunkang Technology (Shenzhen) Co., Ltd. Co-applicant after: Chimei Optoelectronics Co., Ltd. Address before: 518109 Longhua, Shenzhen, town, Foxconn science and Technology Industrial Park E District, building 1, floor 4, Applicant before: Qunkang Technology (Shenzhen) Co., Ltd. Co-applicant before: Innolux Display Group |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20111214 Termination date: 20171212 |