Total views : 112
A Novel Approach to Power Optimization for Projection Systems
Objectives: To use ambient light and distance as parameters to optimize power consumption of a projector system without deteriorating visual experience. Methods/Statistical Analysis: In this work, an efficient approach to optimize power consumption of a projector module is proposed using a light sensor and a distance sensor. Depending on the ambient light condition and distance between projector module and screen, backlight of the projector is adjusted, which affects the power consumed by the module. We have taken different ambient light condition ranging from LUX value of 1 to LUX value of approximately 150, as other conditions are not of practical use. Findings: The experience of a viewer depends on surrounding environment specifically ambient light. As the value of ambient light increases, to have a better visibility backlight of the display system/projector need to be increased and vice versa is also true. Again distance between the screen and source/projector also plays an important role in determining output visibility at a given power consumption. Both of these parameters are combined and used in this work to have an adaptive projector system. Experimental results show that around 30% powers saving can be achieved by implementing our proposed power optimization technique without compromising on the quality of the output. Application/Improvements: The outcomes of the work discussed in this paper can be used in most of the display system. The proposed method has taken care of both ambient light and distance between the screen and source by taking care on light that falls on per square unit area.
Ambient Light, DLP Technology, LED PWM, LUX, Power Optimization
- Carroll A, Heiser G. An analysis of power consumption in a Smartphone. Proceedings of the 2010 USENIX Conference on USENIX Annual Technical Conference; Boston, MA, USA. 2010 Jun. p. 21. PMid: 19913816.
- Pitt MG, Zehner RW, Amudson KR, Gates H. Power consumption of micro-encapsulated display for smart handheld applications. SID Symposium Digest Technical Papers. Wiley, Hoboken, NJ, USA. 2002; 33:1378–81. Crossref
- Hornbeck LJ. Digital Light Processing: A new MEMS-based display technology. Texas Instruments; 2001. p. 325–7.
- Cheng L, Mohapatra S, Zarki ME, Dutt N, Venkatasubramanian N. Quality-based backlight optimization for video playback on handheld devices. Hindawi Publishing Corporation Advances in Multimedia. 2007; 2007:10. PMid: 17545898, PMCid: PMC3883569.
- Prakash P, Shin K. Power optimization techniques for energy efficient systems, Texas Instruments; 2016. p. 95. PMid: 27770404, PMCid: PMC5074931.
- Ferguson B. New visible light sensor technology pays power management dividends in automatic brightness control applications. Microsemi Integrated Products; 2010. p. 1–8. PMCid: PMC3763188.
- Pasricha S, Luthra M, Mohapatra S, Dutt N, Venkatasubramanian N. Dynamic backlight adaptation for low-power handheld devices. IEEE Design and Test of Computers. 2004; 21(5):398–405. Crossref
- Cheng CH, Bai YW. Using fuzzy logic and light-sensor for automatic adjustment of backlight brightness in a mobile computer. IEEE 16th International Symposium; 2012. p. 1–5. Crossref
- There are currently no refbacks.
This work is licensed under a Creative Commons Attribution 3.0 License.