CN101281726B - Automatic control system for image and sound - Google Patents
Automatic control system for image and sound Download PDFInfo
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- CN101281726B CN101281726B CN2008100282905A CN200810028290A CN101281726B CN 101281726 B CN101281726 B CN 101281726B CN 2008100282905 A CN2008100282905 A CN 2008100282905A CN 200810028290 A CN200810028290 A CN 200810028290A CN 101281726 B CN101281726 B CN 101281726B
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Abstract
The present invention provides an automatic audio/video control system designed to control an audio/video output device; the audio/video output device can at least produce a video source or audio source; the automatic audio/video control system comprises an ambient sensor designed to sense the intensity of signals from the video/audio source and output audio/video sensing signals, and an audio/video analyzer, which is electrically connected to the ambient sensor and the audio/video output device and designed to output audio/video control signals according to the audio/video sensing signals to regulate the intensity of the audio/video source. The control system sense variations of the ambient environment by means of the ambient sensor, analyzes and compares with the internal signals in the system, and output appropriate feedback signals to regulate the intensity of the audio/video source of the audio/video output device automatically, so as to attain best audio/video effect. The control system meets people's demand for easy use, environmental compatibility, and individualization for electronic products.
Description
Technical field
The present invention relates to automatic control system, refer to especially a kind of can be according to the variation of environment, the automatic control system for image and sound that the source of sound or the light source of output are made accommodation automatically.
Background technology
Along with the fast development of society, environmental noise also grows with each passing day to the influence of people's life study, and the variation of environment also uses electronic product to make troubles to people.During as use computer playing back music in being in noisy environment, the user must be bigger by manually output volume being adjusted to, and could listen clearly.Yet, playing back music when in the dead of night the time, for other people rest around not influencing, also must manually output volume be adjusted to littler, just so can not cause environmental pollution.In like manner, in the time of a little less than the light of external environment condition is crossed strong or crossed,, cause bigger visual contrast to stimulate for user's eyes for fear of the screen output light source of electronic product, to keep good visual effect, the user also must adjust the power of output light source by manual mode adaptability.Because the variation of described environment is frequent, this manual adjustment program is loaded down with trivial details, operating to the user artificially repeatedly makes troubles, and, because the people is to the audiovisual thoughts and feelings resolution characteristic difference of environmental change, the people that resolution characteristic is relatively poor, often ignore electronic product is made the adjustment that adapts, on the one hand might be because of the excessive another kind of noise pollution source of causing that plays sound, on the other hand, also might bring uncomfortable visual effect to eyes, in the past for a long time, cause the decline of eyesight because of the output light source intensity that does not have in time to adjust electronic product.
Therefore, providing a kind of and can automatically realize the automatic control system for image and sound of the adaptability adjustment of the output source of sound or the intensity of light source according to the variation of environment, is necessity to address the above problem real.
Summary of the invention
The objective of the invention is to, provide a kind of and can automatically realize the automatic control system for image and sound of the adaptability adjustment of the output source of sound or the intensity of light source according to the variation of environment.
To achieve these goals, the invention provides a kind of automatic control system for image and sound, be used to control video and audio output device, described video and audio output device can produce light source or source of sound at least, and it comprises:
Environmental sensor is used for the intensity of sensing light source or source of sound signal, and exports audio-visual sensing signal, and wherein, environmental sensor includes:
One coding/decoding module is used to realize the mutual conversion of anaiog signal and digital signal,
One filtering signals module, it is arranged between coding/decoding module and the following audio-visual analytical equipment, is used to filter the light source that produced by video and audio output device or the digital signal of source of sound;
Audio-visual analytical equipment, its electrical connection and environmental sensor and video and audio output device are exported audio-visual control signal according to described audio-visual sensing signal, to adjust the intensity of light source or source of sound.
Also can further comprise following additional technical feature in the present invention:
Described audio-visual analytical equipment comprises signal comparison module and coding/decoding module, sets reference value, and wherein, described signal comparison module is used for digital signal and described reference value comparative analysis via environmental sensor output; Described coding/decoding module is used to realize the mutual conversion of anaiog signal and digital signal.
Described automatic control system for image and sound further comprises the signal amplification module, and it is electrically connected between filtering signals module and the signal comparison module.
In the present invention, described filtering signals module is low-pass filter, Hi-pass filter or bandpass filter.Described environmental sensor is light source sensor or source of sound sensor, the preferred microphone of source of sound sensor.Described video and audio output device is the electronic installation with LCD display and/or loudspeaker, preferred computer, televisor or mobile communication equipment.
Compared with prior art, automatic control system for image and sound of the present invention is by the variation of environmental sensor sensing surrounding environment, signal comparative analysis through internal system, export corresponding feedback signal, automatically the output source of sound of video and audio output device or the intensity of light source are made the adjustment that adapts, to reach best audio visual effect, satisfied the demand of people to convenience, environmental suitability and the hommization of electronic product use.
For making the present invention easier to understand, further set forth the different specific embodiment of the present invention below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the structural representation of a kind of automatic control system for image and sound of the present invention.
Embodiment
With reference to shown in Figure 1, automatic control system for image and sound of the present invention mainly comprises environmental sensor 1 and audio-visual analytical equipment 2, with control video and audio output device 3.Described video and audio output device 3 is play when having the multimedia programming of visual and sound effects, and it can produce light source or source of sound at least.Environmental sensor 1 is used for the intensity of sensing light source or source of sound signal, and export audio-visual sensing signal, so that allow audio-visual analytical equipment 2 export audio-visual control signal according to described audio-visual sensing signal, the light source of adjusting video and audio output device 3 to adapt or the intensity of source of sound, avoid video and audio output device 3 to play sound excessive and cause noise pollution, avoid video and audio output device institute's output light source and surrounding environment light source contrast excessive and bring uncomfortable visual effect simultaneously to eyes.
With reference to shown in Figure 1, in a preferred embodiment of the invention, described environmental sensor 1 comprises signal receiving module 10, coding/decoding module 12 and filtering signals module 14.Wherein, described signal receiving module 10 is used for detecting and receiving the anaiog signal of various light sources of video and audio output device surrounding environment or source of sound.Described coding/decoding module 12 is connected with signal receiving module 10, is used to realize the mutual conversion of anaiog signal and digital signal, and in the present embodiment, the anaiog signal that is about to described various light source or source of sound is converted to digital signal.Described filtering signals module 14 is electrically connected between coding/decoding module 12 and the audio-visual analytical equipment 2, is used for filtering by the light source that video and audio output device produced or the digital signal of source of sound, and exports the digital signal after the filtering to audio-visual analytical equipment 2 and analyze.The light source or the sound source signal that are produced by environmental sensor 1 filtering video and audio output device itself, thus external environment accurately obtained to the influence of video and audio output device on vision or noise.
In the present embodiment, described audio-visual analytical equipment 2 comprises the signal comparison module 20 and the coding/decoding module 22 of electric connection.Wherein, signal comparison module 20 is electrically connected between filtering signals module 14 and the coding/decoding module 22, being used for will be via the digital signal and the described reference value comparative analysis of environmental sensor 1 output, draw analysis result, and output control signals to 22 pairs of sources of sound of coding/decoding module or light source is adjusted according to analysis result.Described coding/decoding module 22 is used to realize the mutual conversion of anaiog signal and digital signal, so that in the present embodiment, the analysis result of described source of sound or light source digital signal is converted to anaiog signal, and according to the control signal output anaiog signal of signal comparison module 20 output, thereby output light source or sound source to video and audio output device adjust, with the variation that conforms.
Below to adjust control procedure with source of sound be example, the workflow of summary automatic control system for image and sound:
Step 1) output source of sound: open video and audio output device, video and audio output device enters duty, outwards the output sound signal;
Step 2) receives source of sound:,, detect the anaiog signal that receives various sources of sound to the surrounding environment of video and audio output device by the signal receiving module of environmental sensor;
The conversion of step 3) source of sound anaiog signal and digital signal: signal receiving module transfers to coding/decoding module with the anaiog signal of received various sources of sound, and by coding/decoding module the anaiog signal of various sources of sound is converted to corresponding digital signal;
The filtration of step 4) sound source signal: based on the digital signal of known video and audio output device self source of sound, the anaiog signal of above-mentioned source of sound is become the source of sound digital signal through digital-to-analog conversion, so that compare with the source of sound digital signal of video and audio output device self, according to the difference between the two, the source of sound digital signal of cancellation video and audio output device self, and obtain the digital signal of the various sources of sound of video and audio output device surrounding environment, and this result is fed back to audio-visual analytical equipment
The comparison of step 5) sound source signal: in the signal comparison module, reference value is set, described digital signal is after filtering compared with described reference value by program,
I) suppose that after filtering digital signal is greater than described reference value, then the video and audio output device that controls signal to of volume is heightened in output, judges that promptly environmental externality is comparatively noisy, disturbs under the stronger condition, need suitably to improve the volume of the output source of sound of video and audio output device, to satisfy people's audiovisual demand;
Ii) hypothesis digital signal after filtering is less than described reference value, then the video and audio output device that controls signal to of volume is turned down in output, judge that promptly environmental externality is comparatively quiet, disturb under the more weak condition, need suitably to reduce the volume of the output source of sound of video and audio output device;
Step 6) is adjusted volume: the coding/decoding module in the described audio-visual analytical equipment is converted to anaiog signal with the described digital signal of signal comparison module output, and according to control signal, anaiog signal to output is made corresponding adjustment, reduce or heighten the volume of video and audio output device output, with the variation that conforms.
Below to adjust control procedure with light source be example, the workflow of summary automatic control system for image and sound:
The step 1) output light source: open video and audio output device, video and audio output device enters duty, outwards the output light source signal;
Step 2) receive light source: the signal receiving module by environmental sensor is detected and is received various light source anaiog signals the surrounding environment of video and audio output device;
The conversion of step 3) light source anaiog signal and digital signal: signal receiving module transfers to coding/decoding module with the anaiog signal of received various light sources, and by coding/decoding module various light source anaiog signals is converted to corresponding digital signal;
The filtration of step 4) light signal: based on the digital signal of known video and audio output device self light source, above-mentioned light source anaiog signal is become the light source digital signal through digital-to-analog conversion, so that compare with the light source digital signal of video and audio output device self, according to the two difference, the light source digital signal of cancellation video and audio output device self, and obtain the digital signal of the various light sources of video and audio output device surrounding environment, and this result is fed back to audio-visual analytical equipment
The comparison of step 5) light signal: in the signal comparison module, reference value is set, described digital signal is after filtering compared with described reference value by program,
I) suppose that after filtering digital signal is greater than described reference value, then output lightens control signal for light source to video and audio output device, judges that promptly environmental externality light is stronger, at this moment, need suitably lighten the brightness of the output light source of video and audio output device, to reach suitable visual effect;
Ii) hypothesis digital signal after filtering is less than described reference value, then output dims control signal for light source to video and audio output device, a little less than judging that promptly environmental externality light, at this moment, need suitably dim the volume of the output light source of video and audio output device, too greatly people be caused visual stimulation to avoid output light source and external environment condition luminance contrast;
Step 6) is adjusted the intensity of light source: the coding/decoding module in the described audio-visual analytical equipment is converted to anaiog signal with the described digital signal of signal comparison module output, and according to control signal, anaiog signal to output is made corresponding adjustment, reduce or heighten the intensity of light source of video and audio output device output, with the variation that conforms.
In another embodiment of the present invention, aspect the light source detecting, the filtering signals module is except being used for filtering by light source digital signal that video and audio output device produced, the digital signal that filtering is produced by non-visible light also can be set, as infrared ray etc., so, can avoid the interference of the infrared signal that produces because of remote controller, thereby more accurately obtain of the influence of the light intensity of extraneous visible light video and audio output device to audio-visual sensing signal.
In another embodiment of the present invention, also can be electrically connected a signal amplification module between described filtering signals module and the signal comparison module, described signal amplification module can be arranged in environmental sensor or the audio-visual analytical equipment, be used for digital signal is after filtering carried out processing and amplifying, with raising signal degree of accuracy relatively, thereby improve the environment sensing of automatic control system for image and sound and the sensitivity that signal is adjusted.
In the present invention, described filtering signals module is low-pass filter, Hi-pass filter or bandpass filter.Described environmental sensor is light source sensor or source of sound sensor, and wherein, light source sensor is used for the sensitive context light source; The source of sound sensor is used for the sensitive context sound source, preferred microphone.The sensitivity of sensor is high more, and then the precision of Jian Ceing is higher, and the error of sensing and adjustment is also relative littler.Described video and audio output device is the electronic installation with LCD display and/or loudspeaker, preferred computer, televisor or mobile communication equipment.
Automatic control system for image and sound of the present invention is by the variation of environmental sensor sensing surrounding environment, signal comparative analysis through internal system, export corresponding feedback signal, automatically the output source of sound of video and audio output device or the intensity of light source are made the adjustment that adapts, to reach best audio visual effect.
The above person of thought, it only is preferred embodiment of the present invention, when not limiting scope of the invention process with this, promptly the content of putting down in writing according to claim of the present invention and description of the invention has generally been done simple equivalent and is changed and modify, and all still belongs within the claim of the present invention institute covering scope.
Claims (8)
1. an automatic control system for image and sound is used to control video and audio output device, and described video and audio output device can produce light source or source of sound at least, it is characterized in that comprising:
Environmental sensor is used for the intensity of sensing light source at least or source of sound signal, and exports audio-visual sensing signal, and wherein, environmental sensor includes:
One coding/decoding module is used to realize the mutual conversion of anaiog signal and digital signal,
One filtering signals module, it is arranged between coding/decoding module and the following audio-visual analytical equipment, is used to filter the light source that produced by video and audio output device or the digital signal of source of sound;
Audio-visual analytical equipment, its electrical connection and environmental sensor and video and audio output device are exported audio-visual control signal according to described audio-visual sensing signal, with light source or the source of sound intensity of adjusting this video and audio output device.
2. automatic control system for image and sound according to claim 1, it is characterized in that: described audio-visual analytical equipment comprises signal comparison module and coding/decoding module, set reference value, wherein, described signal comparison module is used for digital signal and described reference value comparative analysis via environmental sensor output; Described coding/decoding module is used to realize the mutual conversion of anaiog signal and digital signal.
3. automatic control system for image and sound according to claim 2 is characterized in that: described automatic control system for image and sound further comprises the signal amplification module, and it is electrically connected between filtering signals module and the signal comparison module.
4. automatic control system for image and sound according to claim 1 is characterized in that: described filtering signals module is low-pass filter, Hi-pass filter or bandpass filter.
5. automatic control system for image and sound according to claim 1 is characterized in that: described environmental sensor is light source sensor or source of sound sensor.
6. automatic control system for image and sound according to claim 5 is characterized in that: described source of sound sensor is a microphone.
7. automatic control system for image and sound according to claim 1 is characterized in that: described video and audio output device is the electronic installation with LCD display and/or loudspeaker.
8. automatic control system for image and sound according to claim 7 is characterized in that: described video and audio output device is computer, televisor or mobile communication equipment.
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| CN2008100282905A CN101281726B (en) | 2008-05-21 | 2008-05-21 | Automatic control system for image and sound |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101893928A (en) * | 2009-05-18 | 2010-11-24 | 鸿富锦精密工业（深圳）有限公司 | Display device and playing control method thereof |
| CN103139383A (en) * | 2013-01-30 | 2013-06-05 | 深圳市元征软件开发有限公司 | System and method for intelligent sound and screen adjustment of cell phone |
| CN103945253B (en) * | 2014-04-04 | 2018-02-02 | 北京智谷睿拓技术服务有限公司 | Method for controlling volume and equipment, control method for playing multimedia and equipment |
| CN109522425B (en) * | 2018-11-13 | 2022-01-04 | 北京物灵智能科技有限公司 | Method and device for adjusting multimedia environment and storage equipment |
| CN113490022A (en) * | 2021-05-20 | 2021-10-08 | 周彩凤 | Outdoor mobile multimedia playing system |
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