Camera-driven power management of computer display
Camera-driven power management of computer display
复制标题
摄像头驱动的计算机显示器电源管理
DOI：
10.1109/tcsvt.2011.2177941
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
T. Suetsugu
中科院分区：
文献类型：
--
作者：
V. G. Moshnyaga;K. Hashimoto;T. Suetsugu
有效的显示电源管理对于降低操作台式电脑的成本以及延长电池供电的笔记本电脑和笔记本电脑在连续充电之间的使用寿命至关重要。虽然显示器是专门为我们的眼睛设计的，但现有的显示器电源管理技术只能通过键盘、鼠标或特殊传感器来“感知”我们的手指、温度或运动。因此，当用户看屏幕时，屏幕可能会关闭，或者当没有人看屏幕时，屏幕一直开着，从而释放能量。本文讨论了一种新的显示电源管理技术，并概述了其在个人计算机系统中的实现。与目前使用的电源管理不同，我们的技术通过单个摄像机“监视”用户。这项技术追踪用户的眼睛，只有当用户看屏幕时，显示器才会保持活跃。否则，它会调暗显示屏，甚至关闭显示屏以节省能源。我们在基于现场可编程门阵列的硬件上实现了该技术，并给出了其实验评估结果。
Effective display power management is essential to reduce the cost of operating desktop computers as well as prolonging the lifetime of battery-operated notebooks and laptops between consecutive battery recharges. Although displays are dedicated for our eyes, existing display power management technologies “sense” only our fingers or temperature or motion through keyboard, mouse, or special sensors. Therefore, display may either switch off when its user looks at the screen or loose energy by keeping the screen on when nobody looks at it. This paper discusses a new display power management technology and outlines its implementation in personal computer systems. Unlike presently used power management, our technology “watches” the user through a single video camera. The technology tracks the user's eyes, keeping the display active only if the user looks at the screen. Otherwise, it dims the display down or even switches it off to save energy. We implemented the technology in field programmable gate array-based hardware and present results of its experimental evaluation.