Patent ID: 8305401
Filing Date: 2012-11-06
Classification: G09G

Abstract:
1. An apparatus to control a brightness value applied to a display, the apparatus comprising: a. an analog-to-digital converter configured to convert an analog ambient signal corresponding to one or more ambient characteristics to a digital ambient signal; b. an ambient compensation module configured to calculate a first brightness value according to the digital ambient signal and a manual brightness setting; c. a content compensation module configured to receive an input digital content signal, wherein the digital content signal comprises video frame data for a series of video frames including a frame brightness value corresponding to each frame, further wherein the content compensation module is further configured to calculate a second brightness value according to the first brightness value and the frame brightness value of a current frame; and d. a step generator configured to generate an applied brightness value, wherein the step generator includes a comparator to compare an applied brightness value from a previous cycle to the second brightness value of a current cycle calculated by the content compensation module, and a counter to increment or decrement the applied brightness value from the previous cycle according to the comparison, thereby generating the applied brightness value of the current cycle.