CN102749859B - Intelligent energy-saving audio play control method and system thereof - Google Patents
Intelligent energy-saving audio play control method and system thereof Download PDFInfo
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- CN102749859B CN102749859B CN201210223291.1A CN201210223291A CN102749859B CN 102749859 B CN102749859 B CN 102749859B CN 201210223291 A CN201210223291 A CN 201210223291A CN 102749859 B CN102749859 B CN 102749859B
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Abstract
The invention relates to an intelligent energy-saving audio play control method and a system of the method. The method comprises: an audio signal detecting circuit detects whether an audio signal is input at an audio source interface in real time, and a main control CPU (Central Processing Unit) starts a loudspeaker unit if so; if no audio signal is input, comparing images intercepted by two cameras in real time with a standard image with a clock label, determining the normal working state of audio play equipment, delaying to close the loudspeaker unit if the images intercepted in real time are close to the standard image of the normal working environment; if not, directly closing the loudspeaker unit; intercepting images and comparing the images with the standard image with clock label after delaying by the two cameras to close the loudspeaker unit until the audio play equipment is in the non-normal working state, and closing the loudspeaker unit; and repeating all steps after closing the loudspeaker unit. The invention further discloses the system capable of intelligently controlling the on-off of the audio play equipment.
Description
Technical field
The present invention relates to the field of intelligent control technology of sound equipment, be specifically related to reduce the room etc. that the occasion of frequent playing audio-video equipment is play to the people place that chamber, reception room and love listens to the music as KTV, various specialty and use intelligent power saving sound equipment control method for playing back and system thereof.
Background technology
Play the room etc. at the people place that chamber, reception room and love listens to the music for the occasion of frequent use playing audio-video equipment as KTV, various specialty, because these occasions are often used audio playback device, so this audio playback device is not using but forget while closing in holding state, even if enter holding state, its wasted work rate is also very high.Treat at present the requirement of function effect more and more stricter, if ERP efficiency is the one certification of Europe to energy consumption product standby efficiency.The method of existing reduction audio playback device standby energy consumption all adopts control circuit to detect in real time sound source signal, in the time having sound source signal, open speaker circuit and carry out the broadcasting of source of sound, in the time not having sound source signal, it is mute speaker circuit, make whole speaker circuit power-off, thus the energy consumption while reducing its standby.But there is following problem in this control circuit and control method: because being is often using the occasion use of playing audio-video equipment, its sound source signal may occur repeatedly interrupted momently in normal working hour, control circuit will leave with disconnected equipment continually like this, affect the life-span of equipment, therefore simultaneously this holding frequently and the disconnected Energy Intensity Reduction that not only can not make, also can increase energy consumption.
Summary of the invention
For the deficiencies in the prior art, thereby one of object of the present invention aims to provide opening and the disconnected control method that reduces its stand-by power consumption of a kind of Based Intelligent Control audio playback device.
For achieving the above object, the present invention adopts following technical scheme:
Intelligent power saving sound equipment control method for playing back, it comprises the following steps:
Whether A, sound signal testing circuit detect source of sound interface in real time sound signal input, if there is sound signal input, master cpu is opened speaker circuit;
If B does not have sound signal input, by two real-time truncated pictures of camera with compare with the standard picture of clock label, determine the normal operating conditions of audio playback device, described comparison comprises the brightness of geometric properties and the image of image, in the time that the standard picture of real-time truncated picture and described normal operating conditions is close, time-delay closing speaker circuit; Otherwise, directly mute speaker circuit;
After C, described time-delay closing speaker circuit, two cameras started every one hour cut-away view picture and with compare with the standard picture of clock label, until when the abnormal operating state of audio playback device, mute speaker circuit;
After D, described mute speaker circuit, and repeat above-mentioned in steps;
Wherein, described close to image geometry feature is identical and brightness of image is identical or be close;
The described standard picture with clock label is that master cpu starts initial learn state, after time control module information input time, takes present image by two cameras every one hour, and by this current Image Saving in picture memory.
Preferably, if posterior image is identical with the geometric properties that is stored in the preceding image in picture memory in the described standard picture with clock label, posterior image is also stored in picture memory, otherwise, store posterior image, and preceding image is deleted from storer.
Preferably, described step B also comprises: master cpu detects the pressure transducer being arranged in the room door of placing audio playback device and judged whether that people is in this room, if have, master cpu time-delay closing speaker circuit, otherwise the direct mute speaker circuit of master cpu.
Preferably, described method is further comprising the steps: whether the room that shock detection module detects placement audio playback device in real time has strenuous vibration, if had, open speaker circuit, and the audio prompt signal being stored in audio prompt signal storage is play by loudspeaker.
Preferably, described method is further comprising the steps: if there is strenuous vibration, master cpu control wireless communication module transmission specification signal is sent to specifies receiving terminal to report to the police.
Thereby two of object of the present invention aims to provide opening and the disconnected system that reduces its stand-by power consumption of a kind of Based Intelligent Control audio playback device.
For achieving the above object, the present invention adopts following technical scheme:
Intelligent power saving sound equipment Play System, it comprises:
Master cpu, is inside provided with picture material comparer and brightness of image comparer, be respectively used to by two real-time truncated pictures of camera with compare with the standard picture of clock label;
Picture memory, is connected with master cpu, has the standard picture of clock label for file;
The first camera and second camera, all be connected with master cpu, for gathering with the standard picture of clock label and being stored in picture memory, and for cut-away view picture in real time and by this real-time cut-away view picture by picture material comparer and brightness of image comparer with compare with the standard picture of clock label;
Source of sound interface, its input end is connected with sound signal, and output terminal is connected with master cpu, also this sound signal is sent to speaker circuit for received audio signal;
Speaker circuit, be used for playing described sound signal, described speaker circuit comprises audio detection circuit, loudspeaker, delay switch and the audio switch of all connecting with the volume control switch of short circuiting switch parallel connection, with volume control switch, the audio input end of described loudspeaker is connected with master cpu by voice band line, audio detection circuit is connected between loudspeaker and master cpu, the unlatching of master cpu by audio switch, short circuiting switch and delay switch control loudspeaker, close, whether with the work of maximum current state and time-delay closing;
Time control module, for the time input in the time that master cpu starts initial learn state, the standard picture binding that the time of input and this time take;
Operation control module, controls master cpu for input control signal.
Preferably, described intelligent power saving sound equipment Play System further comprises a LED lamp, and this LED lamp and described power supply are electrically connected, and master cpu is also connected with LED lamp and is judged whether LED lamp is opened by current detection circuit.
Preferably, described intelligent power saving sound equipment Play System further comprises that one is arranged at the pressure transducer in the room door of placing audio playback device, and described pressure transducer is connected with master cpu, for having judged whether that people is in this room.
Preferably, described intelligent power saving sound equipment Play System further comprises a shock detection module, and described vibration detection module is connected with master cpu, and whether the room of placing audio playback device for detecting in real time has strenuous vibration.
Preferably, described intelligent power saving sound equipment Play System further comprises a wireless communication module, the input end of described wireless communication module is connected with master cpu, its output terminal is by wireless network and appointment receiving terminal transmission of wireless signals, and master cpu control wireless communication module transmission specification signal is sent to this receiving terminal and reported to the police.
A kind of intelligent power saving sound equipment control method for playing back set forth in the present invention and system thereof, compared with prior art, its beneficial effect is: the standby period is divided into normal operating conditions and abnormal operating state by the present invention, by the first camera and the real-time truncated picture of second camera with compare with the standard picture of clock label, determine whether in normal operating conditions, time-delay closing speaker circuit in normal operation, and under non-normal working environment direct mute speaker circuit, this kind of method and the system that realizes the method can often used the time period of this audio playback device frequently cut-off speaker circuit, greatly reduce the stand-by power consumption of audio playback device, meet the demand of various efficiencies.
Brief description of the drawings
The process flow diagram that accompanying drawing 1 is intelligent power saving sound equipment control method for playing back of the present invention;
The structured flowchart that accompanying drawing 2 is intelligent power saving sound equipment Play System of the present invention.
Embodiment
Below, by reference to the accompanying drawings and embodiment, intelligent power saving sound equipment control method for playing back of the present invention and system thereof are described further, understand the present invention's technological thought required for protection so that clearer.
Refer to the process flow diagram of Fig. 1 intelligent power saving sound equipment of the present invention control method for playing back.As shown in Figure 1, reduce the method for audio playback device stand-by power consumption, it comprises the following steps:
Whether S101, sound signal testing circuit detect source of sound interface in real time sound signal input;
S102, judge whether sound signal input;
If S103 has sound signal input, master cpu is opened speaker circuit, by speaker circuit, this sound signal is play;
S104, if there is not sound signal input, by two real-time truncated pictures of camera with compare with the standard picture of clock label, determine the normal operating conditions of audio playback device, wherein, normal operating conditions refers to the working hour when user of use audio playback device often uses, here by being added in to the enterprising line operate of clock label this working hour, there is user to arrange, for example its can be set daytime is normal operating conditions, also can be set to evening, some time period can also be set certainly, it should be noted that, if in the situation that evening, LED lamp was lighted, now assert in the room of placing audio playback device and have people, and now the brightness of two real-time truncated pictures of camera is larger, can think that this time period is daytime, be to meet to set the feature that be normal operating conditions daytime.Comparison comprises the brightness of geometric properties and the image of image in addition, the geometric properties of so-called image is that the content of image shows information, because in the present invention, the position of two cameras is fixed, the content of the image that therefore they gather is also identical in the different time periods, just the brightness of image difference of different time sections.
Be that master cpu starts initial learn state with the standard picture of clock label, after time control module information input time, took present image by two cameras every one hour, and by this current Image Saving in picture memory.If posterior image is identical with the geometric properties that is stored in the preceding image in picture memory in the standard picture with clock label, illustrate that this audio playback device is for being moved, posterior image is also stored in picture memory, otherwise, illustrate that movement has occurred this audio playback device, the standard picture of before recording be not applicable to new environment, this kind of situation stored posterior image, and preceding image is deleted from storer, if picture material was always in variation in continuous three hours, think that this audio playback device is always in movement, cannot be located by master cpu prompting, first two cameras are closed, until user's startup again.In preferred embodiment of the present invention, should be that the full twenty four hours of record forms the brightness change curve that a picture material is identical with the standard picture of clock label, then can start intelligent work pattern, be after this just to carry out the comparison of image, the mode of operation of the comparison control loudspeaker circuit by image.
S105, judge whether audio playback device is in normal operating conditions, judge that whether real-time truncated picture is close with the standard picture of described normal operating conditions, here close refers to that image geometry feature is identical and brightness of image is identical or is close, a be close scope of brightness, within the scope of this, we just think to be close, simultaneously, when evening, LED lamp was lighted, its brightness of image can be thought to be close with some time period on daytime, be if user sets while being normal operating conditions daytime, LED lamp was lighted and also can be thought normal operating conditions evening, but, if setting evening be normal operating conditions, determine normal operating conditions according to clock label.
S106, when audio playback device is in normal operating conditions, due to the input of absence of audio signal now, time-delay closing speaker circuit; After time-delay closing speaker circuit starts, two cameras started every one hour cut-away view picture and with compare with the standard picture of clock label, until when the abnormal operating state of audio playback device, mute speaker circuit, certainly, in such cases, if detected after sound signal input, can open speaker circuit.
S107, when audio playback device is in abnormal operating state, due to the input of absence of audio signal now, direct mute speaker circuit; After described mute speaker circuit, two cameras and other testing circuits are all closed, at this moment sound signal testing circuit was connected once every 10 seconds and source of sound interface, while having sensed signal, just remove again to wake up other control circuits, in the time having sound signal input, just remove to open loudspeaker and the first-class testing circuit of shooting, significantly energy-conservation to realize.
In addition, in order to make audio playback device of the present invention more intelligent, in preferred embodiment of the present invention, master cpu also detects the pressure transducer being arranged in the room door of placing audio playback device and has judged whether that people is in this room.Particularly, two pressure transducers different apart from door can be set in door, wherein first pressure transducer is nearer apart from door compared with second pressure transducer, in the time having people to enter, first pressure transducer first produces piezoelectric effect, is then second, now, can think and have people in this room, master cpu is with regard to time-delay closing speaker circuit.In like manner, if this people goes out after (second pressure transducer first reacts compared with first), the direct mute speaker circuit of master cpu, the control of adopts pressure sensor described here to speaker circuit and above-mentioned steps S106 and S107 are coordination, be master cpu time-delay closing speaker circuit meet audio playback device in normal operating conditions (and absence of audio signal input) or have people in room any in the two, in like manner, the direct mute speaker circuit of master cpu meet audio playback device in abnormal operating state (and absence of audio signal input) or unmanned in room any in the two.
It should be noted that, the present invention can also carry out compatibility with burglary-resisting system, usually, if while having robber to enter, conventionally all go back to destroy the facility in this equipment or other rooms, whether the room that the present invention detects placement audio playback device in real time by shock detection module has strenuous vibration, thereby judge whether the people who enters in room is robber, if there is strenuous vibration, master cpu is opened speaker circuit, and the audio prompt signal being stored in audio prompt signal storage is play by loudspeaker, report to the police and warn this robber to show.In order to prevent that this robber from destroying the warning message that this equipment sends, rough destruction is established this equipment, in preferred embodiment of the present invention, when loudspeaker is play warning message, interiors of products setting wireless communication module sends the information of setting to specifying receiving terminal to report to the police, this appointment receiving terminal can be owner's mobile communication terminal, can be also monitoring host computer of alarm center etc., and the information of this setting can be that alerting signal or other signals of communication are as note etc.
According to this intelligent power saving sound equipment control method for playing back, can summarize the system architecture that realizes the method, as shown in Figure 2, and intelligent power saving sound equipment Play System, it comprises:
Master cpu, is inside provided with picture material comparer and brightness of image comparer, be respectively used to by two real-time truncated pictures of camera with compare with the standard picture of clock label;
Picture memory, is connected with master cpu, has the standard picture of clock label for file;
The first camera and second camera, all be connected with master cpu, for gathering with the standard picture of clock label and being stored in picture memory, and for cut-away view picture in real time and by this real-time cut-away view picture by picture material comparer and brightness of image comparer with compare with the standard picture of clock label; Wherein the first camera is installed on the lamp top in room, the ambient conditions of for example ceiling of top in the real-time trap chamber of this first camera, its meaning of taking ceiling is in order to locate and to photograph off-the-air picture more accurately, and the power that detects light changes, second camera is contained in the side of the lamp socket of LED lamp, and the image that can implement like this another angle visual field in trap chamber is ambient brightness changing condition.In the present invention, be why can not accurately monitor in order to prevent one of them to be blocked with two cameras, in the time that one of them is subject to stopping, the brightness of image can no longer change, and now, another one still can effectively be carried out.If the content of two real-time truncated pictures of camera all changes than standard picture, think that movement has occurred in the position of this audio playback device, need to re-start initial mode of learning and carry out the establishment of standard picture.If temporal evolution, the picture material of one of them camera record is constant, and there is variation in the content of another one, think that this another one camera is blocked, or there is variation in current shadow thing, this another one camera carries out record again as candidate, does not send information, and does not compare and determine whether as normal operating conditions taking itself and standard picture.If the picture material of two camera records is normal, but it is inconsistent that brightness changes, one of them changes in the brightness curve rule along standard picture, and another occurs erratic situation, can ignore abnormally, and in suitable, send information.Said referring to suitable time is opened or pressure transducer produces piezoelectric effect when LED lamp herein, think and have people in the time of room, the speaker circuit in this time is opened, the audio prompt signal of original storage plays back reminds user to notice that this brightness changes erratic camera and whether blocked by object, after prompting, by mute speaker circuit, and whether test problems is solved, if unresolved, in suitable, send again relevant prompting next time.
Source of sound interface, its input end is connected with sound signal, and output terminal is connected with master cpu, also this sound signal is sent to speaker circuit for received audio signal;
Speaker circuit, be used for playing described sound signal, described speaker circuit comprises audio detection circuit, loudspeaker, the volume control switch in parallel with short circuiting switch, the delay switch of all connecting with volume control switch and audio switch, the audio input end of described loudspeaker is connected with master cpu by voice band line, audio detection circuit is connected between loudspeaker and master cpu, master cpu passes through audio switch, the unlatching of short circuiting switch and delay switch control loudspeaker, close, whether with the work of maximum current state and time-delay closing, the wherein time-delay closing of delay switch control loudspeaker, directly closing of audio switch control loudspeaker, short circuiting switch during by volume control switch short circuit loudspeaker work with maximum current state,
Time control module, for the time input in the time that master cpu starts initial learn state, the standard picture binding that the time of input and this time take;
Operation control module, controls master cpu for input control signal.
As preferably embodiment of the present invention, this system further comprises a LED lamp, and this LED lamp and described power supply are electrically connected, and master cpu is also connected with LED lamp and is judged that whether LED lamp is opened, and carries out the control of speaker circuit with this by current detection circuit.
In addition, in order to make audio playback device of the present invention more intelligent, in preferred embodiment of the present invention, master cpu also detects the pressure transducer being arranged in the room door of placing audio playback device and has judged whether that people is in this room, and pressure transducer is connected with master cpu.Particularly, two pressure transducers different apart from door can be set in door, wherein first pressure transducer is nearer apart from door compared with second pressure transducer, in the time having people to enter, first pressure transducer first produces piezoelectric effect, is then second, now, can think and have people in this room, master cpu is with regard to time-delay closing speaker circuit.In like manner, if this people goes out after (second pressure transducer first reacts compared with first), the direct mute speaker circuit of master cpu, the control of adopts pressure sensor described here to speaker circuit and above-mentioned steps S106 and S107 are coordination, be master cpu time-delay closing speaker circuit meet audio playback device in normal operating conditions (and absence of audio signal input) or have people in room any in the two, in like manner, the direct mute speaker circuit of master cpu meet audio playback device in abnormal operating state (and absence of audio signal input) or unmanned in room any in the two.
It should be noted that, the present invention can also carry out compatibility with burglary-resisting system, usually, if while having robber to enter, conventionally all can remove to destroy the facility in this equipment or other rooms, this system further comprises a shock detection module, described vibration detection module is connected with master cpu, whether the room of placing audio playback device for detecting in real time has strenuous vibration, if there is strenuous vibration, master cpu is opened speaker circuit, and the audio prompt signal being stored in audio prompt signal storage is play by loudspeaker, report to the police and warn this robber to show.In order to prevent that this robber from destroying warning message that this equipment sends and rough this equipment of destruction, in preferred embodiment of the present invention, this system also comprises a wireless communication module, the input end of wireless communication module is connected with the CPU of perception shock detection module, its output terminal by wireless network by appointed information transmission of wireless signals to specifying receiving terminal, this appointment receiving terminal can be owner's mobile communication terminal, also can be monitoring host computer of alarm center etc., this appointed information can be that alerting signal or other signals of communication are as note etc.
For a person skilled in the art, can be according to technical scheme described above and design, make other various corresponding changes and distortion, and these all changes and distortion all should belong to the protection domain of the claims in the present invention within.
Claims (10)
1. intelligent power saving sound equipment control method for playing back, is characterized in that, it comprises the following steps:
Whether A, sound signal testing circuit detect source of sound interface in real time sound signal input, if there is sound signal input, master cpu is opened speaker circuit;
If B does not have sound signal input, by two real-time truncated pictures of camera with compare with the standard picture of clock label, determine the normal operating conditions of audio playback device, described comparison comprises the brightness of geometric properties and the image of image, in the time that the standard picture of real-time truncated picture and normal operating conditions is close, time-delay closing speaker circuit; Otherwise, directly mute speaker circuit;
After C, described time-delay closing speaker circuit, two cameras started every one hour cut-away view picture and with compare with the standard picture of clock label, until when the abnormal operating state of audio playback device, mute speaker circuit;
After D, described mute speaker circuit, and repeat above-mentioned in steps;
Wherein, described close to image geometry feature is identical and brightness of image is identical or be close;
The described standard picture with clock label is that master cpu starts initial learn state, after time control module information input time, takes present image by two cameras every one hour, and by this current Image Saving in picture memory.
2. intelligent power saving sound equipment control method for playing back according to claim 1, it is characterized in that, if posterior image is identical with the geometric properties that is stored in the preceding image in picture memory in the described standard picture with clock label, posterior image is also stored in picture memory, otherwise, store posterior image, and preceding image is deleted from storer.
3. intelligent power saving sound equipment control method for playing back according to claim 1, is characterized in that, described step B replaces with:
Master cpu detects the pressure transducer being arranged in the room door of placing audio playback device and has judged whether that people is in this room, if having, and master cpu time-delay closing speaker circuit, otherwise the direct mute speaker circuit of master cpu.
4. intelligent power saving sound equipment control method for playing back according to claim 1, is characterized in that, described method is further comprising the steps:
Whether the room that shock detection module detects placement audio playback device in real time has strenuous vibration, if had, opens speaker circuit, and the audio prompt signal being stored in audio prompt signal storage is play by loudspeaker.
5. intelligent power saving sound equipment control method for playing back according to claim 4, is characterized in that, described method is further comprising the steps:
If there is strenuous vibration, master cpu control wireless communication module sends specification signal to specifying receiving terminal to report to the police.
6. intelligent power saving sound equipment Play System, is characterized in that, it comprises:
Master cpu, is inside provided with picture material comparer and brightness of image comparer, is respectively used to the first camera and the real-time truncated picture of second camera and compares with the standard picture of clock label;
Picture memory, is connected with master cpu, has the standard picture of clock label for file;
The first camera and second camera, be all connected with master cpu, for gathering with the standard picture of clock label and being stored in picture memory, and for cut-away view picture in real time;
Source of sound interface, its input end is connected with sound signal, and output terminal is connected with master cpu, also this sound signal is sent to speaker circuit for received audio signal;
Speaker circuit, be used for playing described sound signal, described speaker circuit comprises audio detection circuit, loudspeaker, delay switch and the audio switch of all connecting with the volume control switch of short circuiting switch parallel connection, with volume control switch, the audio input end of described loudspeaker is connected with master cpu by voice band line, audio detection circuit is connected between loudspeaker and master cpu, the unlatching of master cpu by audio switch, short circuiting switch and delay switch control loudspeaker, close, whether with the work of maximum current state and time-delay closing;
Time control module, for the time input in the time that master cpu starts initial learn state, the standard picture binding that the time of input and this time take;
Operation control module, controls master cpu for input control signal.
7. intelligent power saving sound equipment Play System according to claim 6, it is characterized in that, described intelligent power saving sound equipment Play System further comprises a LED lamp, and this LED lamp and power supply are electrically connected, and master cpu is connected with LED lamp and is judged whether LED lamp is opened by current detection circuit.
8. intelligent power saving sound equipment Play System according to claim 6, it is characterized in that, described intelligent power saving sound equipment Play System further comprises that one is arranged at the pressure transducer in the room door of placing audio playback device, described pressure transducer is connected with master cpu, for having judged whether that people is in this room.
9. intelligent power saving sound equipment Play System according to claim 6, it is characterized in that, described intelligent power saving sound equipment Play System further comprises a shock detection module, described shock detection module is connected with master cpu, and whether the room of placing audio playback device for detecting in real time has strenuous vibration.
10. intelligent power saving sound equipment Play System according to claim 9, it is characterized in that, described intelligent power saving sound equipment Play System further comprises a wireless communication module, the input end of described wireless communication module is connected with master cpu, its output terminal is by wireless network and appointment receiving terminal transmission of wireless signals, and master cpu control wireless communication module sends specification signal to this appointment receiving terminal and reports to the police.
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CN104702833B (en) * | 2013-12-04 | 2018-02-27 | 联想(北京)有限公司 | The method and a kind of electronic equipment of a kind of information processing |
CN106101928A (en) * | 2016-06-30 | 2016-11-09 | 蔡军 | A kind of intelligent sound control system |
CN106791711A (en) * | 2017-02-10 | 2017-05-31 | 深圳市完美显示科技有限公司 | A kind of monitor and monitoring system |
CN108093346A (en) * | 2017-12-25 | 2018-05-29 | 广州市尊浪电器有限公司 | A kind of energy saving speaker |
CN108012219A (en) * | 2017-12-25 | 2018-05-08 | 广州市尊浪电器有限公司 | A kind of speaker control method |
CN117596524B (en) * | 2024-01-17 | 2024-05-17 | 深圳市好兄弟电子有限公司 | Sound energy-saving regulation and control method and system based on intelligent control |
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CN101860704B (en) * | 2009-04-10 | 2013-05-08 | 深圳Tcl新技术有限公司 | Display device for automatically closing image display and realizing method thereof |
CN101604152A (en) * | 2009-06-26 | 2009-12-16 | 深圳创维-Rgb电子有限公司 | A kind of power saver for stereo system |
CN101626453A (en) * | 2009-08-11 | 2010-01-13 | 北京华智大为科技有限公司 | Audio and video display device |
CN102469280A (en) * | 2010-11-05 | 2012-05-23 | 屈世虎 | Intelligent television set |
CN201937552U (en) * | 2011-01-25 | 2011-08-17 | 成都吉奥科技有限公司 | Energy-saving timing loudspeaker box |
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