CN101546218B - Method, device and system for saving electricity for display device - Google Patents
Method, device and system for saving electricity for display device Download PDFInfo
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- CN101546218B CN101546218B CN 200910077852 CN200910077852A CN101546218B CN 101546218 B CN101546218 B CN 101546218B CN 200910077852 CN200910077852 CN 200910077852 CN 200910077852 A CN200910077852 A CN 200910077852A CN 101546218 B CN101546218 B CN 101546218B
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Abstract
The invention provides a method, a device and a system for saving electricity for a display device to solve the problem of unnecessary power consumption because a user forgets to turn off the display device. The system for saving electricity for the display device comprises an electricity-saving device and a monitoring module arranged on a host computer, wherein the electricity-saving device comprises a controller, a voice circuit, a speaker and a transmission interface; the monitoring module is used for detecting a host computer shutdown command and sending the host computer shutdown command to the controller of electricity-saving device through the transmission interface; the controller of the electricity-saving device is used for receiving the host computer shutdown command through the transmission interface and sending a start command to the voice circuit; and the voice circuit of the electricity-saving device is used for receiving the start command and outputting voice prompt information of turning off the display device to the speaker for playing. Thus, if the user forgets to turn off the power supply of the display device when shutting down the host computer, the display device can be turned off immediately according to the voice prompt so as to save the power consumption.
Description
Technical field
The present invention relates to field of computer technology, particularly relate to a kind of display power-saving method, Apparatus and system.
Background technology
In routine work and life, except air-conditioning, what electricity consumption was maximum is exactly computer.According to statistics, the PC that a Daepori is logical, power consumption is greatly between 130 watts to 250 watts.Under so big power consumption situation, a lot of people shut down computer in addition and are not related to the custom of display power supply behind the main frame.And this phenomenon is very general, and according to investigations, the user more than 80% is because therefore forget former thereby do not close display power supply cause the unnecessary consumption of power consumption.
For example, be not related to display behind the next main frame of shutting down computer, display enters holding state.And the display stand-by power consumption is approximately 5 watts, does not After Hours close the power switch of display, a whole night is near wait a little while,please machine 10 hours, and a graphoscope just caused standby power consumption 36 kilowatt hours in 1 year so.Calculate if press 0.52 yuan/kilowatt hour of residential electricity consumption, this will spend nearly 19 yuan in vain.If company or unit use a lot of platform computing machines every day simultaneously, just need not spend hundreds of even thousands of expenses owing to close display every day so, will waste a lot of money in 1 year.
Summary of the invention
Technical matters to be solved by this invention provides a kind of display power-saving method, Apparatus and system, does not close display power supply to solve the user owing to forget, and causes the problem of the unnecessary consumption of power consumption.
In order to address the above problem, the invention discloses a kind of display power saving apparatus, comprising: battery saving arrangement and the monitoring module that is arranged at main frame, described battery saving arrangement comprises controller, sound circuit, loudspeaker and transmission interface; Wherein,
Described battery saving arrangement is arranged in the camera head, and then described transmission interface is USB interface;
Described monitoring module is for detection of the main frame shutdown command, and sends the main frame shutdown command by transmission interface to described controller of electricity-saving device;
Described controller of electricity-saving device is used for receiving described main frame shutdown command by transmission interface, and sends startup command to sound circuit;
The sound circuit of described battery saving arrangement be used for to receive described startup command, and the information of voice prompt that will close display outputs to loudspeaker and plays.
Described battery saving arrangement also comprises: infrared inductor, be used for detecting by the infrared induction mode signal power of the described infrared inductor of people's distance, and as people during away from described infrared inductor, send to described controller and to close signal; Then described controller also is used for by transmission interface, and described pass signal is sent to the monitoring module that is arranged at main frame; Described monitoring module also is used for according to described pass signal, and the notifying operation system starts display standby mode process.
As people during near described infrared inductor, described infrared inductor also is used for sending to described controller opens signal; Then described controller also is used for by transmission interface, and the described signal of opening is sent to the monitoring module that is arranged at main frame; Described monitoring module also is used for according to the described signal of opening, and the notifying operation system starts display normal mode process.
Preferably, described battery saving arrangement also comprises: timer, be used for the people is carried out timing away from the time length of infrared inductor, and/or, the people is carried out timing near the time length of infrared inductor; When described people away from infrared inductor time, length met prerequisite the time, described controller send to close signal to the monitoring module that is arranged at main frame; When described people near infrared inductor time, length met prerequisite the time, described controller sends to the monitoring module that is arranged at main frame and opens signal.
The present invention also provides a kind of display battery saving arrangement, comprising: controller, sound circuit, loudspeaker and transmission interface; Wherein,
Described battery saving arrangement is arranged in the camera head, and then described transmission interface is USB interface;
Described controller is used for receiving the main frame shutdown command by transmission interface, and sends startup command to sound circuit;
Described sound circuit is used for receiving described startup command, the information of voice prompt of closing display is outputed to loudspeaker play.
Described display battery saving arrangement also comprises: infrared inductor, be used for detecting by the infrared induction mode signal power of the described infrared inductor of people's distance, and as people during away from described infrared inductor, send to described controller and to close signal; As people during near described infrared inductor, send to described controller and to open signal; Then described controller also is used for by transmission interface, and described pass signal is sent to main frame, notice host-initiated display standby mode process; The described signal of opening is sent to main frame, notice host-initiated display normal mode process.
The present invention also provides a kind of camera head, comprising: imageing sensor, controller, sound circuit, loudspeaker and USB interface; Wherein,
Described controller is used for receiving the main frame shutdown command by USB interface, and sends startup command to sound circuit;
Described sound circuit is used for receiving described startup command, the information of voice prompt of closing display is outputed to loudspeaker play.
Described camera head also comprises: infrared inductor, be used for detecting by the infrared induction mode signal power of the described infrared inductor of people's distance, and as people during away from described infrared inductor, send to described controller and to close signal; As people during near described infrared inductor, send to described controller and to open signal; Then described controller also is used for by USB interface, and described pass signal is sent to main frame, notice host-initiated display standby mode process; The described signal of opening is sent to main frame, notice host-initiated display normal mode process.
Preferably, described camera head also comprises: timer, be used for the people is carried out timing away from the time length of infrared inductor, and/or, the people is carried out timing near the time length of infrared inductor; When described people away from infrared inductor time, length met prerequisite the time, described controller send to close signal to the monitoring module that is arranged at main frame; When described people near infrared inductor time, length met prerequisite the time, described controller sends to the monitoring module that is arranged at main frame and opens signal.
The present invention also provides a kind of display power-saving method, comprising:
Detect the main frame shutdown command;
When detecting, the host notification camera head;
Described camera head starts sound circuit, the information of voice prompt of closing display is outputed to loudspeaker play.
Described method also comprises: detect the people apart from the signal power of camera head by the infrared induction mode, as people during away from camera head, described camera head sends to main frame and closes signal, and as people during near camera head, described camera head sends to main frame and opens signal;
Main frame according to described pass signal enabling display standby mode process and,
Main frame is according to the described signal enabling display normal mode process of opening.
Preferably, described method also comprises: clocking capability is set, when the people away from camera head time, length met prerequisite the time, described camera head send to close signal to main frame; And/or, when the people near camera head time, length met prerequisite the time, described camera head sends to main frame and opens signal.
Compared with prior art, the present invention has the following advantages:
Description of drawings
At first, the present invention is at built-in computer or adopt the external camera head of USB interface that sound circuit and loudspeaker have been installed, after main frame detects shutdown command, can notify camera head, camera head starts sound circuit, the information of voice prompt of closing display is outputed to loudspeaker play.Like this, close display power supply if the user forgets when shutting down computer main frame, just can close immediately according to described voice suggestion, thereby save power consumption.And the present invention does not change display, only needs hardware and the corresponding software of camera head are improved, and just can make the function of camera head abundanter.
Secondly, in order further to reduce computing machine power consumption, infrared inductor has been installed also on camera head.Under the normal computed situation of user, when the user is away from keyboard, described infrared inductor detects the people away from camera head, produce and close signal, described camera head will close signal and send to main frame, host notification os starting display standby mode process, thus the power consumption of display reduced, also increased the life-span of display.And, as user again near computing machine the time, described infrared inductor detects the people near camera head, signal is opened in generation, described camera head will be opened signal and send to main frame, main frame reinforms os starting display normal mode process, recovers to show, thus convenient for users.
Fig. 1 is the cut-away view of the described a kind of camera head of the embodiment of the invention;
Fig. 2 is the structural drawing of the described a kind of display power saving apparatus of the embodiment of the invention;
Fig. 3 is the workflow synoptic diagram of monitoring module U22 in the power saving apparatus shown in Figure 2;
Fig. 4 is the workflow synoptic diagram of camera head U21 middle controller in the power saving apparatus shown in Figure 2;
Fig. 5 is the structural drawing of the described a kind of display battery saving arrangement of the embodiment of the invention;
Fig. 6 is the described a kind of power saving apparatus structural drawing that comprises this display battery saving arrangement of the embodiment of the invention;
Fig. 7 is the process flow diagram of the described a kind of display power-saving method of the embodiment of the invention;
Fig. 8 is the process flow diagram of the described a kind of display power-saving method of another embodiment of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The present invention is to built-in computer or adopt the external camera head of USB interface to improve, and proposes a kind of new camera head, can be used for pointing out the user to close display power supply when shutdown.
With reference to Fig. 1, it is the cut-away view of the described a kind of camera head of the embodiment of the invention.Described camera head also comprises: controller U11, sound circuit U12, loudspeaker U13 and USB interface U14 except comprising the imageing sensor that common camera head has (being used for gathering image information).Wherein, described USB interface U14 is used for the data transmission between realization camera head and the main frame, and, no matter being built in camera head or external camera head in the computing machine, all can communicate by letter with main frame by USB interface U14.Described controller U11 has also increased new function except being used for control chart image-position sensor acquisition of image data and passing through USB interface U14 to the main frame transmission, and is as follows:
Described controller U11 is used for receiving the main frame shutdown command by USB interface U14, and sends startup command to sound circuit U12.
Described sound circuit U12 is used for receiving described startup command, the information of voice prompt of closing display is outputed to loudspeaker U13 play.
Above-mentioned improved camera head not only can photographic images information, can also point out the user to close display when the user shuts down, thereby save the power consumption of display.
Preferably, described camera head can also comprise infrared inductor U15, be used for detecting by the infrared induction mode signal power of the described infrared inductor U15 of people's distance, as people during away from described infrared inductor U15, send to described controller U11 and to close signal; Then described controller U11 also is used for by USB interface U14, and described pass signal is sent to main frame, notice host-initiated display standby mode process.Like this, as user away from computing machine the time, display enters standby mode, thereby further reduces power consumption, and increases the life-span of display.
Preferably, for cooperating above-mentioned automatic stand-by function, when detecting the people near described infrared inductor U15, described infrared inductor U15 also can be used for sending to described controller U11 and opens signal; Then described controller U11 also is used for by USB interface U14, and the described signal of opening is sent to main frame, notice host-initiated display normal mode process.Like this, if the user near the computing machine time, display can recover normal displaying mode again automatically, so the user is very easy to use.
Need to prove that to those skilled in the art, above-mentioned infrared inductor U15 detection people belongs to known technology apart from the principle of distance, present embodiment does not elaborate at this.
Preferably, described camera head can also arrange timer, be used for the people is carried out timing away from the time length of infrared inductor U15, and/or, the people is carried out timing near the time length of infrared inductor U15.When described people met prerequisite (as 10 minutes) away from the time length of infrared inductor U15, described controller U11 sent to main frame and closes signal; When described people near infrared inductor U15 time, length met prerequisite the time, described controller U11 sends to main frame and opens signal.Namely when the user away from or near computing machine after a period of time, controller U11 just can send signal to main frame, in order to avoid the user is owing to temporary transient just leave or approach switching display pattern frequently.Wherein, for the people away from can arranging separately with the time length that approaches, as away from time be to send again in 10 minutes to close signal, the approaching time is just to send in 1 minute to open signal.
At above-mentioned camera head, the embodiment of the invention also provides a kind of display power saving apparatus.
With reference to Fig. 2, it is the structural drawing of the described a kind of display power saving apparatus of embodiment.Described power saving apparatus comprises camera head U21 and is arranged at the monitoring module U22 of main frame.The inner structure of described camera head U21 mainly comprises imageing sensor, controller, sound circuit, loudspeaker and USB interface as described in Figure 1, and detailed content is not described in detail in this.Described monitoring module U22 is for detection of the main frame shutdown command, and the USB interface by main frame USB interface and camera head U21, sends the main frame shutdown command to the controller of camera head U21.After the controller of described camera head U21 receives described main frame shutdown command by USB interface, send startup command to sound circuit; Sound circuit receives described startup command, and the information of voice prompt that will close display outputs to loudspeaker and play, and the prompting user closes display power supply.Need certain hour owing to begin shutdown from main frame to the host power supply cut-out, send prompt tone so there is power supply to power to described camera head.
Preferably, if described camera head U21 also comprises infrared inductor, then described monitoring module U22 also is used for the pass signal of sending according to the controller of camera head U21 or opens signal, and the notifying operation system starts display standby mode process or normal mode process.Be specially: when detect the people apart from the signal intensity of infrared inductor a little less than, as less than certain threshold value the time, the people is away from computing machine in expression, infrared inductor sends the pass signal to the controller of camera head U21, controller sends described pass signal by USB interface to the monitoring module U22 of main frame again, monitoring module U22 is according to described pass signal, and the notifying operation system starts display standby mode process; Stronger apart from the signal intensity of infrared inductor when detecting the people, as greater than certain threshold value the time, the expression people has approached computing machine, and monitoring module U22 can receive and hold signal, and starts display normal mode process according to opening signal notifying operation system.
With reference to Fig. 3, be the workflow synoptic diagram of monitoring module U22 in the above-mentioned power saving apparatus, as follows:
Behind computer starting, the driver module of camera head U21 is finished initial work earlier; Then, after described monitoring module U22 detects the shutdown command of host operating system, interrupt to the controller transmission shutdown of camera head U21; When detecting the look-at-me 1 that camera head U21 sends (this example is closed signal with look-at-me 1 expression), the notifying operation system starts display standby mode process; When detecting the look-at-me 2 that camera head U21 sends (this example is opened signal with look-at-me 2 expressions), the notifying operation system starts display normal mode process.Detect other processing commands that controller is sent and work as monitoring module U22, during as image processing command, can the notifying operation system start other application processes execution the corresponding commands.
With reference to Fig. 4, be the workflow synoptic diagram of camera head U21 middle controller in the above-mentioned power saving apparatus, as follows:
After camera head U21 starts, at first finish power-up initializing; Then, when controller receives main frame shutdown interruption, send order to sound circuit; When receiving the infrared induction signal, if signal then produces look-at-me 1, and sends look-at-me 1 by USB interface to main frame for high (this example is that signal is closed in high expression with the signal); If signal is low (this example is closed signal with signal for low expression), then produces look-at-me 2, and send look-at-me 2 by USB interface to main frame.
In sum, above-mentioned power saving apparatus is not changed display, only needs hardware and the corresponding software of camera head are improved, and just can make the function of camera head abundanter.
Based on above-mentioned camera head and the explanation that comprises the power saving apparatus of this camera head, protection scope of the present invention can also expand a kind of display battery saving arrangement and a kind of power saving apparatus that comprises this battery saving arrangement to.Wherein, described battery saving arrangement not only can be arranged in the common camera head, can also directly be built in the computing machine according to practical application, or be arranged in any device that uses that can link to each other with computing machine, and the present invention does not limit at this.
With reference to Fig. 5, it is the structural drawing of the described a kind of display battery saving arrangement of embodiment.
Described display battery saving arrangement mainly comprises: controller U51, sound circuit U52, loudspeaker U53 and transmission interface 54.Wherein, described controller U51 is used for receiving the main frame shutdown command by transmission interface U54, and sends startup command to sound circuit U52.Described sound circuit U51 is used for receiving described startup command, the information of voice prompt of closing display is outputed to loudspeaker U53 play.The communication that described transmission interface 54 is used between this battery saving arrangement of realization and the main frame, this transmission interface 54 can be USB interface, can be other data-interfaces also, present embodiment does not limit at this.
Preferably, described display battery saving arrangement can also comprise:
Infrared inductor U55 is used for detecting by the infrared induction mode signal power of the described infrared inductor U55 of people's distance, as people during away from described infrared inductor U55, sends to described controller U51 and to close signal; As people during near described infrared inductor U55, send to described controller U51 and to open signal;
Then described controller U51 also is used for by transmission interface U54, and described pass signal is sent to main frame, notice host-initiated display standby mode process; The described signal of opening is sent to main frame, notice host-initiated display normal mode process.
Preferably, described display battery saving arrangement can also comprise:
Timer is used for the people is carried out timing away from the time length of infrared inductor U55, and/or, the people is carried out timing near the time length of infrared inductor U55;
When described people away from infrared inductor U55 time, length met prerequisite the time, described controller U51 send to close signal to main frame; When described people near infrared inductor U55 time, length met prerequisite the time, described controller U51 sends to main frame and opens signal.
Usually, when described display battery saving arrangement was arranged in the camera head, then described transmission interface U54 was USB interface.
With reference to Fig. 6, it is the described a kind of power saving apparatus structural drawing that comprises this display battery saving arrangement of embodiment.
Described power saving apparatus mainly comprises display battery saving arrangement U61 shown in Figure 5 and is arranged at the monitoring module U62 of main frame, described battery saving arrangement U61 mainly comprises controller, sound circuit, loudspeaker and transmission interface, described monitoring module U62 is for detection of the main frame shutdown command, and by the transmission interface of main frame and the transmission interface of described battery saving arrangement U61, to the controller transmission main frame shutdown command of described battery saving arrangement U61.The controller of described battery saving arrangement U61 receives described main frame shutdown command by transmission interface, and sends startup command to sound circuit; Sound circuit receives described startup command, and the information of voice prompt that will close display outputs to loudspeaker and plays.
Preferably, if described battery saving arrangement U61 also comprises infrared inductor, when the intensity of described infrared signal was more weak, described monitoring module U62 also be used for to receive the pass signal that infrared inductor produces, and started display standby mode process according to described pass signal notifying operation system; When the intensity of described infrared signal was strong, described monitoring module U62 also was used for receiving the signal of opening that infrared inductor produces, and started display normal mode process according to the described signal notifying operation system that opens.
At above-mentioned explanation, the embodiment of the invention also provides a kind of display power-saving method.This method is not limited to above-mentioned battery saving arrangement structure and above-mentioned power saving apparatus structure, also can have the device of other structures or system to finish described method flow.Be that example describes below with the camera head.
With reference to Fig. 7, it is the process flow diagram of the described a kind of display power-saving method of embodiment.Specific as follows:
S701, the user main frame of shutting down computer;
S702 detects the main frame shutdown command, when detecting, and the host notification camera head;
S703, described camera head starts sound circuit, the information of voice prompt of closing display is outputed to loudspeaker play;
S704, the user closes display power supply according to described voice suggestion.
Preferably, with reference to Fig. 8, be the process flow diagram of the described a kind of display power-saving method of another embodiment.
S801 under the computing machine normal operation, detects the people apart from the signal power of camera head by the infrared induction mode;
S802, as people during away from camera head, described camera head sends to main frame and closes signal;
S803, main frame is according to described pass signal enabling display standby mode process;
S804, as people during near camera head, described camera head sends to main frame and opens signal;
S805, main frame is according to the described signal enabling display normal mode process of opening;
S806, the user main frame of shutting down computer;
S807 detects the main frame shutdown command, the host notification camera head;
S808, described camera head starts sound circuit, the information of voice prompt of closing display is outputed to loudspeaker play;
S809, the user closes display power supply according to described voice suggestion.
Preferably, in described infrared detection process, clocking capability can also be set, when the people away from camera head time, length met prerequisite the time, described camera head send to close signal to main frame; And/or, when the people near camera head time, length met prerequisite the time, described camera head sends to main frame and opens signal.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For method embodiment, because it is similar substantially with system embodiment to device, so description is fairly simple, relevant part gets final product referring to the part explanation of device and system embodiment.
More than to a kind of display power-saving method provided by the present invention, device, system and a kind of camera head, be described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (7)
1. a display power saving apparatus is characterized in that, comprising: battery saving arrangement and the monitoring module that is arranged at main frame, and described battery saving arrangement comprises controller, sound circuit, loudspeaker and transmission interface; Wherein, described battery saving arrangement is arranged in the camera head, and then described transmission interface is USB interface;
Described monitoring module is for detection of the main frame shutdown command, and sends the main frame shutdown command by transmission interface to described controller of electricity-saving device;
Described controller of electricity-saving device is used for receiving described main frame shutdown command by transmission interface, and sends startup command to sound circuit;
The sound circuit of described battery saving arrangement be used for to receive described startup command, and the information of voice prompt that will close display outputs to loudspeaker and plays;
Described battery saving arrangement also comprises:
Infrared inductor is used for detecting by the infrared induction mode signal power of the described infrared inductor of people's distance, as people during away from described infrared inductor, sends to described controller and to close signal;
Then described controller also is used for by transmission interface, and described pass signal is sent to the monitoring module that is arranged at main frame; Described monitoring module also is used for according to described pass signal, and the notifying operation system starts display standby mode process;
As people during near described infrared inductor, described infrared inductor also is used for sending to described controller opens signal;
Then described controller also is used for by transmission interface, and the described signal of opening is sent to the monitoring module that is arranged at main frame; Described monitoring module also is used for according to the described signal of opening, and the notifying operation system starts display normal mode process.
2. system according to claim 1 is characterized in that, described battery saving arrangement also comprises:
Timer is used for the people is carried out timing away from the time length of infrared inductor, and/or, the people is carried out timing near the time length of infrared inductor;
When described people away from infrared inductor time, length met prerequisite the time, described controller send to close signal to the monitoring module that is arranged at main frame; When described people near infrared inductor time, length met prerequisite the time, described controller sends to the monitoring module that is arranged at main frame and opens signal.
3. a display battery saving arrangement is characterized in that, comprising: controller, sound circuit, loudspeaker and transmission interface; Wherein, described battery saving arrangement is arranged in the camera head, and then described transmission interface is USB interface;
Described controller is used for receiving the main frame shutdown command by transmission interface, and sends startup command to sound circuit;
Described sound circuit is used for receiving described startup command, the information of voice prompt of closing display is outputed to loudspeaker play;
Described battery saving arrangement also comprises:
Infrared inductor is used for detecting by the infrared induction mode signal power of the described infrared inductor of people's distance, as people during away from described infrared inductor, sends to described controller and to close signal; As people during near described infrared inductor, send to described controller and to open signal;
Then described controller also is used for by transmission interface, and described pass signal is sent to main frame, notice host-initiated display standby mode process; The described signal of opening is sent to main frame, notice host-initiated display normal mode process.
4. a camera head is characterized in that, comprising: imageing sensor, controller, sound circuit, loudspeaker and USB interface; Wherein,
Described controller is used for receiving the main frame shutdown command by USB interface, and sends startup command to sound circuit;
Described sound circuit is used for receiving described startup command, the information of voice prompt of closing display is outputed to loudspeaker play;
Described camera head also comprises:
Infrared inductor is used for detecting by the infrared induction mode signal power of the described infrared inductor of people's distance, as people during away from described infrared inductor, sends to described controller and to close signal; As people during near described infrared inductor, send to described controller and to open signal;
Then described controller also is used for by USB interface, and described pass signal is sent to main frame, notice host-initiated display standby mode process; The described signal of opening is sent to main frame, notice host-initiated display normal mode process.
5. camera head according to claim 4 is characterized in that, also comprises:
Timer is used for the people is carried out timing away from the time length of infrared inductor, and/or, the people is carried out timing near the time length of infrared inductor;
When described people away from infrared inductor time, length met prerequisite the time, described controller send to close signal to the monitoring module that is arranged at main frame; When described people near infrared inductor time, length met prerequisite the time, described controller sends to the monitoring module that is arranged at main frame and opens signal.
6. a display power-saving method is characterized in that, comprising:
Detect the main frame shutdown command;
When detecting, the host notification camera head;
Described camera head starts sound circuit, the information of voice prompt of closing display is outputed to loudspeaker play;
Described method also comprises:
Detect the people apart from the signal power of camera head by the infrared induction mode, as people during away from camera head, described camera head sends to main frame and closes signal, and as people during near camera head, described camera head sends to main frame and opens signal;
Main frame according to described pass signal enabling display standby mode process and,
Main frame is according to the described signal enabling display normal mode process of opening.
7. method according to claim 6 is characterized in that, also comprises:
Clocking capability is set, when the people away from camera head time, length met prerequisite the time, described camera head send to close signal to main frame; And/or, when the people near camera head time, length met prerequisite the time, described camera head sends to main frame and opens signal.
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| WO2011129309A1 (en) * | 2010-04-12 | 2011-10-20 | シャープ株式会社 | Illumination device and illumination system |
| CN102253707B (en) * | 2011-07-04 | 2016-06-22 | 中兴通讯股份有限公司 | A kind of reduce display screen power consumption realize method and system |
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