Resources Contact Us Home
Luminance level control device

Image Number 18 for United States Patent #8130325.

A scene change detecting circuit (1) detects a scene change of video. An average luminance level operating circuit (2) calculates an average luminance level (APL) of a video signal (VD). A luminance overdrive amount calculating circuit (3) calculates a luminance overdrive amount (OD) based on the average luminance level (APL). A time-linked attenuating circuit (7) outputs a power consumption limit correction amount (PA) by attenuating the luminance overdrive amount (OD) with an elapse of time from a point in time of detecting the scene change. An adder (8) adds the power consumption limit correction amount (PA) and a reference power consumption limit value (Lp) to output the addition result as a power consumption limit amount (PL). An ABL circuit (4) calculates a luminance limit amount (BL) based on luminance limit characteristics, the average luminance level (APL) and the power consumption limit amount (PL). A luminance level control circuit (5) determines a display drive condition (BC) based on the luminance limit amount (BL). A PDP drive controller (6) drives a display panel (20) based on the video signal (VD) and the display driving condition (BC).

  Recently Added Patents
Fuel cell module
Front portion of a vehicle, toy, and/or replicas thereof
Method and apparatus for monitoring wireless communication in hearing assistance systems
Color imaging device
Pandemic protocol for emergency dispatch
Circuit for compressing data and a processor employing same
Hot-press cushion material and manufacturing method of the same
  Randomly Featured Patents
Liquid crystal device and electronic apparatus
Detergent compositions containing insoluble particulates with a cationic surface treatment
Adjustable wrench
Cell-free synthesis and isolation of novel genes and polypeptides
Adjustable ramp helix
Reed for textile machines
Earthquake resistant enclosure for electronic equipment
Ultrasound contrast agent
Reduced glare intraocular lens
Electric power converter, electric power converter controlling method and electric power converting system