CN102821210A - Power-saving method for reading with intelligent terminal - Google Patents
Power-saving method for reading with intelligent terminal Download PDFInfo
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- CN102821210A CN102821210A CN2012102979544A CN201210297954A CN102821210A CN 102821210 A CN102821210 A CN 102821210A CN 2012102979544 A CN2012102979544 A CN 2012102979544A CN 201210297954 A CN201210297954 A CN 201210297954A CN 102821210 A CN102821210 A CN 102821210A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a power-saving method for reading with an intelligent terminal. The intelligent terminal is provided with a light ray sensor and a distance sensor, wherein the light ray sensor and the distance sensor are connected with the input end of a CPU (central processing unit), and the output end of the CPU is connected with the input end of a mobile phone backlight IC (Integrated Circuit)). The power-saving method comprises the following steps that step 1, the ambient light brightness is detected through the built-in light ray sensor of a mobile phone, and the backlight brightness of a mobile phone screen is primarily adjusted; and step 2, a distance from a human face to a mobile phone screen is detected through the built-in distance sensor of the mobile phone, and the backlight brightness of the mobile phone screen is further adjusted. When in the scene that people read a webpage or an electronic book through the mobile phone, the ambient optical brightness is firstly detected through the light ray sensor so as to primarily adjust the backlight brightness of the mobile phone screen, and then the distance from the human face to the mobile phone is detected through the distance sensor so as to adjust the backlight brightness of the screen, so that a purpose of more exquisite power saving can be realized.
Description
Technical field
The present invention relates to a kind of intelligent terminal, particularly relate to the electricity saving method that a kind of intelligent terminal is read.
Background technology
Intelligent terminal basically all is built-in with light sensor and range sensor at present, (to have capacitance touch screen): light sensor is regulated mobile phone screen brightness through the testing environment light intensity, reaches purpose of power saving; Range sensor then mainly is when we make a phone call, judges that people's face near extinguishing screen apart from size, avoids misoperation, simultaneously also can power saving, that is to say that range sensor only is used in mobile phone when making a phone call.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art; The electricity saving method that provides a kind of intelligent terminal to read is when using scene such as cell phone reading webpage or e-book, earlier through light sensor testing environment brightness the user; The preliminary mobile phone screen backlight illumination of regulating; It is far and near to the distance of mobile phone to detect people's face through range sensor again, further regulates screen backlight brightness, to reach more careful power saving purpose.
In order to achieve the above object; The technical scheme that the present invention adopts is; The electricity saving method that a kind of intelligent terminal is read, described intelligent terminal is provided with light sensor and range sensor, and light sensor and range sensor are connected with the CPU input; The CPU output is connected with mobile phone IC input backlight, and described electricity saving method may further comprise the steps:
Step 1. is tentatively regulated the mobile phone screen backlight illumination through the light sensor testing environment brightness of embedded in mobile phone;
Further, described intelligent terminal is according to user's use habit, environmental light brightness be set to seven from dark to bright scene, and it is corresponding with it correspondingly screen backlight brightness to be divided into seven light luminance class.
Further, the described light sensor testing environment of step 1 brightness comprises:
The light sensor of intelligent terminal detects environmental light brightness on every side;
Light sensor sends to CPU with detected environmental light brightness information.
Further, the described preliminary adjusting mobile phone screen backlight illumination of step 1 comprises:
A.CPU analyzes brightness information, comprises tone, saturation and the brightness value of analyzing brightness information, and confirms the environmental light brightness scene according to brightness information;
B. according to environmental light brightness scene coupling screen backlight illumination class;
C. screen backlight brightness is adjusted to the screen backlight brightness class of coupling.
Further, step 2 range sensor detect people's face to the distance of mobile phone screen through the face recognition technology realization, may further comprise the steps:
Range sensor emission infrared ray;
Infrared ray returns after the refraction of people's face;
The infra-red intensity that range sensor returns according to detection judges that screen arrives the distance of people's face;
Detected distance is stored in the range sensor register supplies CPU to read.
Further, described range sensor detects relevant by infrared intensity apart from range, and infrared intensity is 100-500lux.
Further, the described range sensor of described infrared ray detects the distance of people's face to screen through polling mode, and the CPU of mobile phone whenever reads the distance value of range sensor register at a distance from a time period.
Further, described range sensor detects the distance of people's face to screen through interrupt mode, and the user preestablishes one and interrupts threshold values, is scheduled to interrupt threshold values when distance reaches, and mobile phone CPU reads the distance value of range sensor register.
Further, intelligent terminal is divided between N distance regions according to the distance of detection of handset screen to people's face, and 0 < N < 10, and N is integer, correspondence is provided with N screen backlight brightness between distance regions, and N screen backlight brightness arrangement from bright to dark.
Further, the backlight illumination of the described further adjusting mobile phone screen of step 2 comprises:
Mobile phone CPU reads the distance value of range sensor register;
According to distance value coupling screen backlight illumination scope;
Screen backlight brightness is adjusted to the screen backlight brightness of CPU coupling.
Compared with prior art, the invention has the beneficial effects as follows: light sensor is regulated mobile phone screen brightness through the testing environment light intensity, reaches purpose of power saving; Range sensor judges that people's face near extinguishing screen apart from size, avoids misoperation, simultaneously also can power saving; When the function of range sensor is used in scenes such as cell phone reading webpage or e-book; Through light sensor testing environment brightness, tentatively regulate the mobile phone screen backlight illumination earlier, it is far and near to the distance of mobile phone to detect people's face through range sensor again; Further regulate screen backlight brightness, to reach more careful power saving purpose.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present invention;
Fig. 2 is a method flow diagram of the present invention;
Fig. 3 is that light sensor of the present invention is regulated mobile phone screen backlight illumination method flow diagram;
Fig. 4 is that range sensor of the present invention is regulated mobile phone screen backlight illumination method flow diagram.
Embodiment
Be elaborated with reference to accompanying drawing below in conjunction with embodiment, so that technical characterictic of the present invention and advantage are carried out more deep annotation.
Theory diagram of the present invention is as shown in Figure 1; Intelligent terminal is provided with light sensor and range sensor; Light sensor and range sensor are connected with the CPU input; The CPU output is connected with mobile phone IC input backlight, and CPU output output screen backlight illumination regulates screen backlight brightness for mobile phone IC backlight.
Method flow diagram of the present invention is as shown in Figure 2, and described electricity saving method may further comprise the steps:
Step 1. is tentatively regulated the mobile phone screen backlight illumination through the light sensor testing environment brightness of embedded in mobile phone;
Further, described intelligent terminal is according to user's use habit, environmental light brightness be set to seven from dark to bright scene, and it is corresponding with it correspondingly screen backlight brightness to be divided into seven light luminance class.
Fig. 3 is that light sensor of the present invention is regulated mobile phone screen backlight illumination method flow diagram, may further comprise the steps:
The light sensor of step S101. intelligent terminal detects environmental light brightness on every side;
Step S102. light sensor sends to CPU with detected environmental light brightness information;
Step S103.CPU analyzes brightness information, comprises tone, saturation and the brightness value of analyzing brightness information, and confirms the environmental light brightness scene according to brightness information;
Step S104. is according to environmental light brightness scene coupling screen backlight illumination class;
Step S105. is adjusted to screen backlight brightness the screen backlight brightness class of coupling.
Fig. 4 is that range sensor of the present invention is regulated mobile phone screen backlight illumination method flow diagram, may further comprise the steps:
Step S201. range sensor emission infrared ray;
Step S202. infrared ray returns after the refraction of people's face;
The infra-red intensity that step S203. range sensor returns according to detection judges that screen arrives the distance of people's face;
Step S204. is stored in detected distance and supplies CPU to read in the range sensor register;
Step S205. mobile phone CPU reads the distance value of range sensor register;
Step S206. is according to distance value coupling screen backlight illumination scope;
Step S207. is adjusted to screen backlight brightness the screen backlight brightness of CPU coupling.
Further, described range sensor detects relevant by infrared intensity apart from range, and infrared intensity is 100-500lux.Lux (lux, legal symbol lx) unit of illuminance is light source that light intensity is 1cd of distance, the illumination intensity of accepting at 1 meter.
Further, the described range sensor of described infrared ray detects the distance of people's face to screen through polling mode, and the CPU of mobile phone whenever reads the distance value of range sensor register at a distance from a time period.
Further, described range sensor detects the distance of people's face to screen through interrupt mode, and the user preestablishes one and interrupts threshold values, is scheduled to interrupt threshold values when distance reaches, and mobile phone CPU reads the distance value of range sensor register.
Further, intelligent terminal is divided between N distance regions 0 < N < 10 according to the detection of handset screen to the distance of people's face; And N is an integer, and correspondence is provided with N screen backlight brightness between distance regions, and N screen backlight brightness arrangement from bright to dark; When light intensity changed greatly, N can be greater than 10.
Among the present invention,, at first test it " only display brightness " under the varying environment brightness (guaranteeing that human eye read the power saving brightness under the comfortable prerequisite) to a display screen; Secondly, according to user's use habit, divides seven from dark to bright different scenes, corresponding, the backlight illumination of display screen also be divided into seven class with it correspondence (such as, when ambient light intensity during at 0-50 lux, corresponding brightness of display screen is 40 lux); Then, the photosensitive sensor built-in according to light sensor can detect (wavelength 550nm) ambient light intensity level (unit is lux), detect this value after, be divided into which shelves, it is corresponding with it just which shelves brightness of display screen to be transferred to.
The division of ambient light level, the different brightness of corresponding display screen are ready-portioned in advance.After the mobile phone light sensor detected environmental light brightness, corresponding brightness of display screen had also been decided to get off with regard to corresponding.Be left to do, regulate the brightness of display screen that the display backlight current value reaches appointment through mobile phone CPU exactly.
Range sensor generally just is contained near the earpiece, the display screen below, and it detects the method for people's face to mobile phone touch-screen distance: be through the emission infrared ray, after the refraction of people's face, return the distance that the infra-red intensity that detection is returned comes judging distance.The infrared ray light intensity value that detects reception is big more, shows that distance is near more.
At present, the energy saving method of mobile phone display screen, top mentioning according to the difference of environmental light brightness, regulated the brightness of display screen.The present invention is when using mobile phone, and human eye comes division in detail to the distance of display screen is different.
Such as, it is 10 lux that light sensor detects environmental light brightness, corresponding brightness of display screen is 40 lux; At this moment, we utilize range sensor to detect the distance of people's face to display screen again, if 30cm; Brightness of display screen just is adjusted to 40 lux; If 15cm just is adjusted to 20 lux (this corresponding relation is to regulate) when design.
The accuracy of detection of range sensor of the present invention is meant that the figure place of sensor acquisition data is big or small, can only gather 8 such as the transducer that has, and the transducer that has can collect 12, and the figure place of image data is big more, and its accuracy of detection is good more.The infrared intensity of range sensor influences range sensor and detects the size apart from range, such as, emission infrared ray 400 lux can detect the 30cm distance farthest, and the emission infrared ray has only 200 lux, possibly just can only detect the 10cm distance farthest.CPU processing speed of the present invention refers to after mobile phone CPU collects the data of transducer, the speed of computing, execution, and fast more, the adjusting of brightness of display screen is sensitiveer.
Range sensor is when work, and polling procedure is meant that mobile phone CPU comes the value of read sensor register at set intervals; Interrupt mode is meant, we have established one in advance and have interrupted threshold values (apart from threshold values), have waited until that threshold values, and mobile phone CPU just comes to fetch data, such as, be 15cm apart from threshold value setting, when detecting people's face to the distance of display screen during less than 15cm, CPU just can the value of reaching.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For one of ordinary skill in the art of the present invention, under the prerequisite that does not break away from the present invention's design, make simple change or optimization, all should be regarded as protection scope of the present invention.
Claims (10)
1. the electricity saving method read of an intelligent terminal; Described intelligent terminal is provided with light sensor and range sensor; Light sensor and range sensor are connected with the CPU input; The CPU output is connected with mobile phone IC input backlight, it is characterized in that described electricity saving method may further comprise the steps:
Step 1. is tentatively regulated the mobile phone screen backlight illumination through the light sensor testing environment brightness of embedded in mobile phone;
Step 2. detects the distance of people's face to the mobile phone screen through the range sensor of embedded in mobile phone, further regulates the backlight illumination of mobile phone screen.
2. the electricity saving method that intelligent terminal according to claim 1 is read; It is characterized in that: described intelligent terminal is according to user's use habit; Environmental light brightness be set to seven from dark to bright scene, and it is corresponding with it correspondingly screen backlight brightness to be divided into seven light luminance class.
3. the electricity saving method that intelligent terminal according to claim 2 is read is characterized in that the described light sensor testing environment of step 1 brightness comprises:
The light sensor of intelligent terminal detects environmental light brightness on every side;
Light sensor sends to CPU with detected environmental light brightness information.
4. the electricity saving method that intelligent terminal according to claim 3 is read is characterized in that the described preliminary adjusting mobile phone screen backlight illumination of step 1 comprises:
A.CPU analyzes brightness information, comprises tone, saturation and the brightness value of analyzing brightness information, and confirms the environmental light brightness scene according to brightness information;
B. according to environmental light brightness scene coupling screen backlight illumination class;
C. screen backlight brightness is adjusted to the screen backlight brightness class of coupling.
5. the electricity saving method that intelligent terminal according to claim 1 is read is characterized in that, step 2 range sensor detect people's face to the distance of mobile phone screen through the face recognition technology realization, may further comprise the steps:
Range sensor emission infrared ray;
Infrared ray returns after the refraction of people's face;
The infra-red intensity that range sensor returns according to detection judges that screen arrives the distance of people's face;
Detected distance is stored in the range sensor register supplies CPU to read.
6. the electricity saving method that intelligent terminal according to claim 5 is read is characterized in that: described range sensor detects relevant by infrared intensity apart from range, and infrared intensity is 100-500lux.
7. the electricity saving method that intelligent terminal according to claim 6 is read; It is characterized in that: the described range sensor of described infrared ray detects the distance of people's face to screen through polling mode, and the CPU of mobile phone whenever reads the distance value of range sensor register at a distance from a time period.
8. the electricity saving method that intelligent terminal according to claim 6 is read; It is characterized in that: described range sensor detects the distance of people's face to screen through interrupt mode; The user preestablishes one and interrupts threshold values; Be scheduled to interrupt threshold values when distance reaches, mobile phone CPU reads the distance value of range sensor register.
9. the electricity saving method of reading according to claim 7 or 8 described intelligent terminals; It is characterized in that: intelligent terminal is divided between N distance regions according to the distance of detection of handset screen to people's face; 0 < N < 10; And N is an integer, and correspondence is provided with N screen backlight brightness between distance regions, and N screen backlight brightness arrangement from bright to dark.
, the electricity saving method read of intelligent terminal according to claim 9, it is characterized in that: the backlight illumination of the described further adjusting mobile phone screen of step 2 comprises:
Mobile phone CPU reads the distance value of range sensor register;
According to distance value coupling screen backlight illumination scope;
Screen backlight brightness is adjusted to the screen backlight brightness of CPU coupling.
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| CN103458110A (en) * | 2013-08-17 | 2013-12-18 | 广东欧珀移动通信有限公司 | Method and mobile terminal for adjusting display screen backlight in combination with acceleration sensor |
| CN104468912A (en) * | 2014-12-08 | 2015-03-25 | 上海斐讯数据通信技术有限公司 | Method for controlling luminance of screen of mobile terminal and display terminal |
| CN104634351A (en) * | 2013-11-11 | 2015-05-20 | 华硕电脑股份有限公司 | Wearable electronic device |
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| CN105788568A (en) * | 2016-05-13 | 2016-07-20 | 广东欧珀移动通信有限公司 | Screen brightness adjustment method and device |
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| CN106133643A (en) * | 2014-04-07 | 2016-11-16 | 惠普发展公司，有限责任合伙企业 | Based on user distance adjusting brightness of display |
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| CN108767653A (en) * | 2018-05-30 | 2018-11-06 | Oppo广东移动通信有限公司 | The control system of laser projecting apparatus, the control method of terminal and laser projecting apparatus |
| US11183811B2 (en) | 2018-05-30 | 2021-11-23 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Control system and method for laser projector, and terminal |
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