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
Random access point (RAP) formation using intra refreshing technique in video coding
Anti-infective derivatives, method for the production thereof, pharmaceutical compositions containing same and uses of said derivatives in treatment
Fluorescent molecule and method for detecting target nucleic acid
ASICs having programmable bypass of design faults
Aqueous composition with agents to inhibit water evaporation
Silicon carbide substrate, epitaxial wafer and manufacturing method of silicon carbide substrate
  Randomly Featured Patents
Critical injury insurance systems and methods
Semiconductor laser light emitting apparatus and solid-state laser rod pumping module
Liposuction filter and lipoplasty device
Method and the means for removing ice from a ship's channel
Electrode for discharge lamps
Dual-patch antenna and array
Method of preventing damage to miniature electronic components held by a component carrier
Method and mold to control optical device polymerization
Partial frame memory FPR display device and writing and reading method thereof
Radiation system