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    VOLTAGE CONVERTER
    1.
    发明公开
    VOLTAGE CONVERTER 审中-公开
    电压转换器

    公开(公告)号：EP1678817A1

    公开(公告)日：2006-07-12

    申请号：EP04770281.6

    申请日：2004-10-19

    申请人： Koninklijke Philips Electronics N.V.

    发明人： DERCKX, Henricus, P., M. ,  SMEETS, Patrick, E., G. ,  EFFING, Hermanus, J. ,  VAN LIER, Wilhelmus, J., R.

    IPC分类号： H02M3/158 ,  H02M3/07

    CPC分类号： H02M3/073 ,  H02M3/1584 ,  H02M3/1588 ,  Y02B70/1466

    摘要： A voltage converter comprises an inductive circuit (L) for storing energy during an inductive magnetizing mode and transferring energy during an inductive de­magnetizing mode. In addition the voltage converter comprises at least two non-inverting branches (12,13,14) for providing at least two non-inverted output voltages (Va,Vb,Vc) and an inverting branch (15) for providing an inverted output voltage. The inverting (15) and non-inverting (12,13,14) branches being parallely coupled to an output (10) of the inductive circuit (L). The inductive circuit being arranged to transfer energy to the inverting branch (15) and to one of the at least two non-inverting branches (12,13,14). Through this, the inverted voltage (Vinv) and the corresponding non-inverted output voltage (Va,Vb,Vc) of the one of the at least two non-inverting branches (12,13,14) are having an opposite polarity and a substantially equal magnitude.

    摘要翻译： 电压转换器包括用于在感应磁化模式期间存储能量并且在感应消磁模式期间传送能量的电感电路（L）。 此外，电压转换器包括用于提供至少两个非反相输出电压（Va，Vb，Vc）的至少两个非反相支路（12,13,14）和用于提供反相输出电压 。 反相（15）和非反相（12,13,14）分支并联耦合到电感电路（L）的输出（10）。 所述电感电路被布置为将能量传输到所述反相支路（15）以及所述至少两个非反相支路（12,13,14）中的一个。 通过此，至少两个非反相支路（12,13,14）中的一个的反相电压（Vinv）和相应的非反相输出电压（Va，Vb，Vc）具有相反的极性，并且a 大致相等。

    MULTI OUTPUT DC/DC CONVERTER FOR LIQUID CRYSTAL DISPLAY DEVICE
    4.
    发明公开
    MULTI OUTPUT DC/DC CONVERTER FOR LIQUID CRYSTAL DISPLAY DEVICE 审中-公开
    与多输出用于液晶显示器DC / DC转换器

    公开(公告)号：EP1568007A1

    公开(公告)日：2005-08-31

    申请号：EP03775603.8

    申请日：2003-11-21

    申请人： Koninklijke Philips Electronics N.V.

    发明人： SCHOOFS, Franciscus, A., C., M. ,  VAN LIER, Wilhelmus, J., R.

    IPC分类号： G09G3/36 ,  H02M3/07

    CPC分类号： G09G3/3696 ,  G09G2310/0275 ,  H02M3/07 ,  H02M2001/009

    摘要： A liquid crystal display (LCD) system comprising means for generating a number of LCD drive voltages with values symmetrical with respect to a predetermined voltage value, said means having a configuration of buffer capacitors to provide each of the LCD drive voltages with a buffer capacitance, the LCD system further comprising an LCD driver circuit with matrix switching and control means to supply the terminals of an LCD panel with voltages corresponding to said LCD drive voltages, resulting in a proper light level of the pixels of the LCD panel. To define the LCD drive voltage values, at least one charge pump unit is provided with at least one pump capacitor and switching elements, which at least one charge pump unit is connected to the buffer capacitors.

    A METHOD OF DRIVING A DISPLAY
    5.
    发明公开
    A METHOD OF DRIVING A DISPLAY 有权
    一种用于控制显示器

    公开(公告)号：EP1943634A2

    公开(公告)日：2008-07-16

    申请号：EP06744939.7

    申请日：2006-05-15

    申请人： Koninklijke Philips Electronics N.V.

    发明人： SMITS, Wilhelmus, J., M. ,  VAN LIER, Wilhelmus, J., R. ,  RUIGT, Dolf ,  DERCKX, Henricus, P., M.

    IPC分类号： G09G3/20

    CPC分类号： G09G3/20 ,  G09G3/2025 ,  G09G3/2074 ,  G09G3/2077 ,  G09G2340/0428

    摘要： The present invention relates to a method of driving a display comprising: - receiving grey level input data, comprising a subpixel input data consisting of N bits, from an external image data source; - mapping the L upper bits of the N-bit subpixel input data to an L-bit first mapped data, where L≤(N-1); - generating an additional bit of mapped data; - using the lower N-L bits of said N-bit subpixel input data for a control operation; including providing a driver data consisting of L+l bits, based on the first mapped data and the additional bit of mapped data, to a driver circuit; and - controlling the driver circuit to output driving voltages set in relation to the driver data, to a display element, wherein the total number of voltage levels correspond to the maximum value representable by the L bits, plus one. The control operation further comprises, performing frame mixing comprising providing said driver data as either representing said first mapped data or an increment thereof. The additional bit is, inter alia, used to enable representation of said increment.