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
Methods of modulating interleukin-22 and immune response by notch regulators
Display system, display control method and computer program
Luminescent nanosheets, and fluorescent illuminators, solar cells and color displays utilizing the same as well as nanosheet paints
Systems and methods for managing fleet services
Fixing device and image forming apparatus
Method of transmitting and receiving wireless resource information
Communication system including a switching section for switching a network route, controlling method and storage medium
  Randomly Featured Patents
Acoustic energy system, method and apparatus for processing flat articles
Hyperpolarization of a gas
Information processing system
Golf club head
Ion mobility spectrometer having extended linear dynamic range
Electrical stimulation treatment of hypotension
Image taking apparatus and image-taking method
Semiconductor device having a solid state image sensing device and manufacturing method thereof
Mandrel device and method for hard disks
Method of mixing or kneading edible flour