Hardware/Software Support and Algorithms for Dynamic Backlight Scaling in TFT LCDs

TFT LCD 中动态背光调节的硬件/软件支持和算法

• 批准号: 0541469
• 负责人: Massoud Pedram
• 金额: --
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-03-01 至 2010-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0541469&HistoricalAwards=false
• 关键词: Hardware; Software; Support; Algorithms; Dynamic

0541469Massoud PedramU of Southern CaliforniaHardware/Software Support and Algorithms for Dynamic Backlight Scaling in TFT LCDs Display components have become a key focus of efforts for maximization of the battery lifetime in a wide range of portable, display-equipped, microelectronic systems and products. A particularly effective technique in reducing the power consumption of all kinds of displays is the dynamic backlight scaling technique, where the intensity of the backlight lamp and the LCD transmittance function are changed concurrently and in proportion so that the same visual perception is created in the human eyes at much lower levels of power consumption. This research therefore aims to develop spatiotemporal and/or color-aware backlight scaling techniques for pixel transformation of the displayed still images or video streams so as to maximize the energy saving in a target platform. The new techniques , which take advantage of the human visual system characteristics to minimize distortion between the original and backlight-scaled images/videos, will be implemented and demonstrated on the Apollo Testbed II hardware platform. The broader impact of the research is to significantly reduce the power consumption of typical handheld devices, increasing their discharge-cycle lifetime, thereby, enabling more widespread and convenient use of such devices. The backlight dimming technology can also be applied in AC-powered systems where the key concern is the energy cost to the individual user as well as the society at large. This technology has the potential to reduce the typical energy bill of a desktop computer by 30% or so (when the system is being used). This research, if successful, will expedite introduction of advanced display technologies (such as LED-based backlighting for LCDs, or organic LED-based displays) since it will reduce their power cost without sacrificing quality.

0541469 MASSOUD PEDRAMU的南加州软件/软件支持和用于TFT LCDS显示器中动态背光缩放组件的算法已成为最大化电池寿命以在各种便携式，具有可便携式，具有显示的，具有显示的，微型的微型系统和产品中最大化电池寿命的关键重点。减少各种显示器功耗的一种特别有效的技术是动态背光缩放技术，其中背光灯的强度和LCD透射率函数同时更改并以比例的比例更改，以便在人眼中在功耗较低的人眼中产生相同的视觉感知。因此，这项研究旨在开发时空和/或颜色吸引的背光缩放技术，用于显示显示的静止图像或视频流的像素转换，以最大程度地利用目标平台中的节能。将利用人类视觉系统特征来最大程度地减少原始图像/视频之间的失真，并将在Apollo Testbed II硬件平台上实现和演示。这项研究的更广泛的影响是显着降低典型的手持设备的功耗，从而增加其排放周期的寿命，从而使这种设备更广泛而便捷地使用。背光调光技术也可以应用于交流动力系统中，关键问题是对个人用户以及整个社会的能源成本。该技术有可能将台式计算机的典型能源费用降低30％左右（使用系统时）。如果成功的话，这项研究将加快引入高级显示技术（例如LED的LCD背光或基于有机LED的显示），因为它将在不牺牲质量的情况下降低其功率成本。