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
Dynamically updating privacy settings in a social network
Direct connect single layer touch panel
Noise suppression in speech signals
Woven mesh substrate with semiconductor elements, and method and device for manufacturing the same
Vehicle exterior
Codeword-enhanced peer-to-peer authentication
Compound semiconductor device and manufacturing method therefor
  Randomly Featured Patents
Nasal retractor
Agonists of guanylate cyclase useful for the treatment of gastrointestinal disorders, inflammation, cancer and other disorders
Device for the handling and transfer of a load on a vehicle such as a container or a tray
Cloning and sequencing of allergens of dermatophagoides (house dust mite)
Method for preserving a liver by perfusion with or storage in a solution containing ascorbyl tocopheryl phosphodiester
Lightweight small craft gun system
Optical films enabling autostereoscopy
Thermal deformation compensating range finder
Data restore systems and methods in a replication environment
Metal oxide remover containing a strong mineral acid, chelating agent and a basic ammonia derivative