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    PLASMA DISPLAY PANEL DRIVING METHOD AND PLASMA DISPLAY DEVICE
    1.
    发明公开
    PLASMA DISPLAY PANEL DRIVING METHOD AND PLASMA DISPLAY DEVICE 有权
    一种用于控制等离子平面显示器及电浆显示器单元

    公开(公告)号：EP1986177A4

    公开(公告)日：2009-09-02

    申请号：EP07714057

    申请日：2007-02-13

    Applicant: PANASONIC CORP

    Inventor： MAEDA TOSHIYUKI ,  KIGO SHIGEO ,  TSUJITA YOSHIKI ,  TOMIOKA NAOYUKI ,  YAMASHITA TAKERU ,  KITATANI KEI

    IPC: G09G3/288 ,  G09F9/00 ,  G09G3/20 ,  G09G3/291 ,  G09G3/292 ,  G09G3/296 ,  G09G3/298

    CPC classification number: G09G3/2927 ,  G09G2320/041

    Abstract: Provided is a plasma display panel driving method by which display qualities of an image is improved by estimating the highest possible temperature and the lowest possible temperature of a panel based on a temperature detected by a temperature sensor and by performing suitable drive. A plasma display device is also provided. The method has at least three drive modes having different sub-field configurations, i.e., low temperature drive mode, room temperature drive mode and high temperature drive mode. The highest possible temperature and the lowest possible temperature of the panel are estimated from the temperature detected by the temperature sensor, the panel temperature status is judged from the highest possible temperature or the lowest possible temperature, and the panel is driven by switching the mode to a suitable drive mode, corresponding to the temperature status of the panel.

    LUMINANCE LEVEL CONTROLLER
    2.
    发明公开
    LUMINANCE LEVEL CONTROLLER 审中-公开
    HELLIGKEITSSTUFENSTEUERUNG

    公开(公告)号：EP2093747A4

    公开(公告)日：2011-04-13

    申请号：EP07832506

    申请日：2007-11-26

    Applicant: PANASONIC CORP

    Inventor： IWAKURA NORIYUKI ,  TAKETANI NOBUO ,  YAMASHITA TAKERU ,  TOZAKI SHOZO ,  OOTOMO TAKASHI ,  YOSHINARI HIROSHI

    IPC: G09G3/28 ,  G09G3/20 ,  G09G3/288 ,  H04N5/66

    CPC classification number: H04N5/147 ,  G09G3/288 ,  G09G2320/0242 ,  G09G2320/103 ,  G09G2330/021 ,  G09G2360/16

    Abstract: A scene change detecting circuit (1) detects a scene change of a video. An average luminance level calculating circuit (2) calculates an average luminance level (APL) of a video signal (VD). A luminance overdrive quantity calculating circuit (3) calculates a luminance overdrive quantity (OD) based on the average luminance level (APL). An attenuation circuit (7) operating with time outputs a power consumption limit correction quantity (PA) by attenuating the luminance overdrive quantity (OD) in accordance with a time passed from the time when the scene change is detected. An adder (8) adds the power consumption limit correction quantity (PA) and a reference power consumption limit value (Lp), and the added result is outputted as a power consumption limit quantity (PL). An ABL circuit (4) calculates a luminance limit quantity (BL) based on luminance limit characteristics, the average luminance level (APL) and the power consumption limit quantity (PL). A luminance level control circuit (5) determines display drive conditions (BC) based on the luminance limit quantity (BL). The PDP drive controller (6) drives a display panel (20) based on the video signal (VD) and the display drive conditions (BC).

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