CN102457599A - Method for detecting light of current environment by mobile phone camera - Google Patents
Method for detecting light of current environment by mobile phone camera Download PDFInfo
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- CN102457599A CN102457599A CN2010105259989A CN201010525998A CN102457599A CN 102457599 A CN102457599 A CN 102457599A CN 2010105259989 A CN2010105259989 A CN 2010105259989A CN 201010525998 A CN201010525998 A CN 201010525998A CN 102457599 A CN102457599 A CN 102457599A
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- mobile phone
- camera
- light intensity
- light
- current environment
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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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 method for detecting light of a current environment by a mobile phone camera. A mobile phone baseband chip is used as a main control chip and communicates with and controls the camera through an I2C interface; meanwhile, data transmission between the mobile phone baseband chip and the camera is realized by using a dedicated 8-pin data interface; light sensed information output by the camera is transmitted to a service program in a message form; and the service program compares the acquired light intensity change range and frequency with a preset level, and adjusts a screen backlight and a keyboard of mobile terminal equipment so as to save electric power.
Description
Technical field
The present invention relates to the mobile communication equipment field, relate in particular to a kind of implementation method that current environment light is detected through mobile phone cam.
Background technology
Present stage, the use of mobile phone more and more widely and has the trend that becomes people's daily life necessity, so the power saving performance of mobile phone more and more receives people's attention.In the mobile phone use, no matter current environment light is strong and weak, display backlight and keyboard back light brightness all are the same, though can manual adjustments, complicated steps and not intelligent.Simultaneously, all be to utilize the independent light sensor that the ambient light intensity detection is regulated the backlight and keyboard back light of mobile phone screen in the market, can increase hardware cost like this.The low-carbon (LC) life is the life style that everyone should pursue, the human earth environment of depending on for existence and living of protection.Extensively reached the frequent communication equipment that uses by people like this for mobile phone like this, just need to pass through intrinsic camera module and realize detecting automatically the current environment light intensity, to reach purpose of power saving.
Summary of the invention
To the deficiency of present prior art, the objective of the invention is to does not increase under the prerequisite of hardware cost, utilizes the intrinsic camera module of portable terminal to obtain light intensity and regulates backlight of mobile terminal and keyboard light, thereby reach purpose of power saving.
The objective of the invention is to realize through following technical scheme:
A kind of implementation method that current environment light is detected through mobile phone cam; Described mobile terminal device with camera function; Comprise chip for cell phone and camera; Mobile phone base band chip is realized communication and control to camera as main control chip through the I2C interface, and camera is realized the reception of view data through the 8BIT data/address bus.The data that software is exported YUV and jpeg data form respectively according to the pixel size of camera output output to mobile phone base band chip, and the data of these two kinds of forms not only comprise view data, also comprise light sensation information simultaneously.
The light sensation information that described mobile phone cam will be stored in the register sends to application layer through Drive Layer with the form of message.For making real-time and the accuracy that reads the light sensation value; For making mobile phone reasonability of regulating backlight with keyboard back light; Open a service role (ServiceTASK) in application layer; The monitoring camera obtains the current environment light intensity to be changed, generally be with one 8 bit value (being that number range is 0～255) expression light intensity from the most weak to the strongest.Service role is confirmed next step operation of doing according to obtaining light intensity value excursion and frequency through software algorithm.
Described light intensity value can be divided into five grades, and corresponding range of light intensity is 0 to 51,51 to 102,102 to 153,153 to 204,204 to 255.Corresponding mobile phone display screen is backlight also to be divided into five grades with the press key lamp backlight illumination, is respectively bright, brighter, normal, darker and gloomy, and promptly the light intensity of current environment and mobile phone backlight illumination are inversely proportional to, and regulates real-time and reaches more purpose of power saving.Concrete adjusting algorithm is following: under the situation that mobile phone key can be used; Per 60 seconds of service role (but this detect frequency user set) obtains the light intensity value that Drive Layer reports and compares judgement, if the light intensity value excursion is current grade, and the message that does not then report backlight level to change; Avoid message too much; Otherwise report corresponding backlight level value, it is backlight to reach the real-time regulated mobile phone, thereby power saving.
Description of drawings
Fig. 1 is communication terminal baseband chip of the present invention and camera communication sketch map;
Fig. 2 is light intensity of the present invention and communication terminal corresponding sketch map backlight;
Fig. 3 regulates flow chart automatically for light intensity of the present invention.
Embodiment
Below in conjunction with accompanying drawing, further specify the present invention and how to realize:
Embodiment
As shown in Figure 1, mobile phone base band chip is as main control chip, and through I2C interface control camera, camera receives view data through the 8BIT data/address bus.The pixel size that software is exported according to camera is exported the mobile phone base band chip that outputs to of YUV and jpeg data form respectively, and mobile phone base band chip deposits view data and light sensation information in related register respectively.
The light sensation information that mobile phone cam will be stored in the register sends to application layer through Drive Layer with the form of message.Service role monitoring current environment light intensity changes, and obtains current light intensity value.Service role is confirmed next step operation of doing according to obtaining light intensity value excursion and frequency through software algorithm.
Under the situation that mobile phone key can be used; Per 60 seconds of service role (but this detect frequency user set) obtains the light intensity value that Drive Layer reports and compares judgements (like Fig. 2), if the light intensity value excursion is current grade, does not then report the message of backlight level variation; Avoid message too much; Otherwise report corresponding backlight level value, according to service role report backlight level carry out the mobile phone screen adjusting (like Fig. 3) with the key-press backlight lamp backlight, reach purpose of power saving.
Claims (3)
1. one kind is passed through the implementation method that mobile phone cam detects current environment light; It is characterized in that: described mobile phone base band chip is as main control chip; Realize communication and control through the I2C interface to camera; Camera is realized the reception of light sensation data through the 8BIT data/address bus, and is stored in the register; Drive Layer sends to application layer with the form of message, and frequency and scope that service routine changes according to light intensity are according to the screen backlight and the keyboard back light of grade adjustment mobile phone.
2. a kind of implementation method that current environment light is detected through mobile phone cam according to claim 1; It is characterized in that: the light sensation information that described mobile phone cam will be stored in the register sends to application layer through Drive Layer with the form of message; Open a service role (Service TASK) in application layer; The monitoring camera obtains the current environment light intensity to be changed; Service role is confirmed next step operation of doing according to obtaining light intensity value excursion and frequency through software algorithm.
3. a kind of implementation method that current environment light is detected through mobile phone cam according to claim 1; It is characterized in that: described under the situation that mobile phone key can be used; Service role obtained the light intensity value that Drive Layer reports in per 60 seconds and compares judgement; If the light intensity value excursion is current grade, the message that does not then report backlight level to change; Otherwise report corresponding backlight level value, it is backlight to reach the real-time regulated mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105259989A CN102457599A (en) | 2010-10-29 | 2010-10-29 | Method for detecting light of current environment by mobile phone camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010105259989A CN102457599A (en) | 2010-10-29 | 2010-10-29 | Method for detecting light of current environment by mobile phone camera |
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| CN102457599A true CN102457599A (en) | 2012-05-16 |
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| CN2010105259989A Pending CN102457599A (en) | 2010-10-29 | 2010-10-29 | Method for detecting light of current environment by mobile phone camera |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104601808A (en) * | 2014-12-30 | 2015-05-06 | 西安乾易企业管理咨询有限公司 | Method for automatically adjusting screen luminance by detecting environment light through mobile phone camera |
| CN104952131A (en) * | 2015-06-19 | 2015-09-30 | 福建星网锐捷通讯股份有限公司 | Method and device for visitor's visit time register of building intercom system |
| CN105867587A (en) * | 2016-03-25 | 2016-08-17 | 广东欧珀移动通信有限公司 | A touch key brightness adjusting method and adjusting system and a terminal apparatus |
| CN107135368A (en) * | 2017-03-20 | 2017-09-05 | 广东小天才科技有限公司 | Picture light adjusting method and device for video call |
| CN110636230A (en) * | 2019-10-31 | 2019-12-31 | Oppo广东移动通信有限公司 | Exposure adjusting method, device, equipment and storage medium |
| CN111832249A (en) * | 2019-04-11 | 2020-10-27 | 珠海金山办公软件有限公司 | Document display method and device and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050212824A1 (en) * | 2004-03-25 | 2005-09-29 | Marcinkiewicz Walter M | Dynamic display control of a portable electronic device display |
| CN101179789A (en) * | 2007-09-12 | 2008-05-14 | 青岛海信移动通信技术股份有限公司 | Backlight brightness self-adjusting mobile phone and implementing method thereof |
| CN101378563A (en) * | 2007-08-28 | 2009-03-04 | 深圳富泰宏精密工业有限公司 | Electricity-saving system and method for mobile phones |
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2010
- 2010-10-29 CN CN2010105259989A patent/CN102457599A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050212824A1 (en) * | 2004-03-25 | 2005-09-29 | Marcinkiewicz Walter M | Dynamic display control of a portable electronic device display |
| CN101378563A (en) * | 2007-08-28 | 2009-03-04 | 深圳富泰宏精密工业有限公司 | Electricity-saving system and method for mobile phones |
| CN101179789A (en) * | 2007-09-12 | 2008-05-14 | 青岛海信移动通信技术股份有限公司 | Backlight brightness self-adjusting mobile phone and implementing method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104601808A (en) * | 2014-12-30 | 2015-05-06 | 西安乾易企业管理咨询有限公司 | Method for automatically adjusting screen luminance by detecting environment light through mobile phone camera |
| CN104952131A (en) * | 2015-06-19 | 2015-09-30 | 福建星网锐捷通讯股份有限公司 | Method and device for visitor's visit time register of building intercom system |
| CN105867587A (en) * | 2016-03-25 | 2016-08-17 | 广东欧珀移动通信有限公司 | A touch key brightness adjusting method and adjusting system and a terminal apparatus |
| CN107135368A (en) * | 2017-03-20 | 2017-09-05 | 广东小天才科技有限公司 | Picture light adjusting method and device for video call |
| CN111832249A (en) * | 2019-04-11 | 2020-10-27 | 珠海金山办公软件有限公司 | Document display method and device and electronic equipment |
| CN110636230A (en) * | 2019-10-31 | 2019-12-31 | Oppo广东移动通信有限公司 | Exposure adjusting method, device, equipment and storage medium |
| CN110636230B (en) * | 2019-10-31 | 2021-03-05 | Oppo广东移动通信有限公司 | Exposure adjusting method, device, equipment and storage medium |
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Application publication date: 20120516 |