Abstract:
PROBLEM TO BE SOLVED: To provide a technique capable of setting illumination intensity of a light source for display. SOLUTION: During operation, a system transforms a video image from an initial brightness domain to a linear brightness domain, which includes a range of brightness values corresponding to substantially equidistant adjacent radiant-power values in a displayed video image. In this linear brightness domain, the system may determine an intensity setting of the light source based on at least a portion of the transformed video image, such as the portion of the transformed video image that includes spatially varying visual information in the video image. Moreover, the system may modify the transformed video image so that a product of the intensity setting and a transmittance associated with the modified video image approximately equals a product of a previous intensity setting and a transmittance associated with the video image. For example, the modification may include changing brightness values in the transformed video image. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide techniques for setting illumination intensity of a light source for a display. SOLUTION: Embodiments of a system that includes one or more integrated circuits are described. During operation, the system transforms the video image from an initial brightness domain to a linear brightness domain, which includes a range of brightness values corresponding to substantially equidistant adjacent radiant-power values in a displayed video image. In this linear brightness domain, the system may specify an intensity setting of the light source based on at least a portion of the transformed video image, such as the portion of the transformed video image that includes spatially varying visual information in the video image. Moreover, the system may modify the transformed video image so that a product of the intensity setting and a transmittance associated with the modified video image approximately equals a product of a previous intensity setting and a transmittance associated with the video image. For example, the modification may include changing brightness values in the transformed video image. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
Embodiments of a system (730) that includes one or more integrated circuits are described. During operation, the system transforms (742-1) the video image (712) from an initial brightness domain to a linear brightness domain, which includes a range of brightness values corresponding to substantially equidistant adjacent radiant-power values in a displayed video image. In this linear brightness domain, the system may determine an intensity setting (718) of the light source based on at least a portion of the transformed video image, such as the portion of the transformed video image that includes spatially varying visual information in the video image. Moreover, the system may modify (748) the transformed video image so that a product of the intensity setting and a transmittance associated with the modified video image approximately equals a product of a previous intensity setting (718) and a transmittance associated with the video image (716). For example, the modification may include changing brightness values in the transformed video image.
Abstract:
Systems and methods are disclosed for power management of a system having non-volatile memory ("NVM"). One or more controllers of the system can optimally turn modules on or off and/or intelligently adjust the operating speeds of modules and interfaces of the system based on the type of incoming commands and the current conditions of the system. This can result in optimal system performance and reduced system power consumption.
Abstract:
Embodiments of a system (450) that includes one or more integrated circuits are described. During operation of the system, an interface in the one or more integrated circuits receives video signals (412) associated with a video image and a brightness setting (414) of a light source which illuminates a display that displays the video image. Next, an extraction circuit (462), which is electrically coupled to the input interface, calculates a brightness metric associated with the video image based on the received video signals. Then, an analysis circuit (464), electrically coupled to the extraction circuit, analyzes the brightness metric to identify one or more subsets (510, 512, 560) of the video image, and an intensity circuit (470), electrically coupled to the analysis circuit, determines an intensity setting (418) of the light source based on the brightness setting and a first portion of the brightness metric associated with one of the subsets of the video image. Note that this subset of the video image includes spatially varying visual information (510) in the video image. Moreover, an output interface, electrically coupled to the intensity circuit, outputs the intensity setting of the light source.