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    FLUORESCENT TUBE LAMP DRIVE CIRCUIT
    2.
    发明授权
    FLUORESCENT TUBE LAMP DRIVE CIRCUIT 有权
    控制电路的荧光管灯

    公开(公告)号：EP1763977B1

    公开(公告)日：2010-01-20

    申请号：EP05752120.5

    申请日：2005-06-23

    申请人： Koninklijke Philips Electronics N.V.

    发明人： BUIJ, Arnold, W. ,  VAN DER VEEN, Geert, W.

    IPC分类号： H05B41/295

    CPC分类号： H05B41/295 ,  Y10S315/05

    摘要： A drive circuit for driving a fluorescent tube lamp comprises a variable frequency oscillator generating a lamp drive frequency, a resonant drive circuit driving the lamp with the lamp drive frequency, and a control unit for driving the variable frequency of the latter under control of a synchronization signal. When a pre-heating frequency is generated by the variable frequency oscillator, the lamp is pre-heated while when an illumination drive frequency is generated, the lamp ignites and operates in its illuminated state. The control unit comprises a transition controller for at an ignition of the lamp limiting the drive frequency to an ultimate ignition frequency, and only enabling transition from the ultimate ignition frequency to the illumination drive frequency after an ignition delay time.

    DEVICE FOR LIGHTING A ROOM
    3.
    发明授权
    DEVICE FOR LIGHTING A ROOM 有权
    装置用于照明的区域

    公开(公告)号：EP1738615B1

    公开(公告)日：2008-09-17

    申请号：EP05718581.1

    申请日：2005-03-29

    申请人： Koninklijke Philips Electronics N.V.

    发明人： BEIJ, Marcel ,  BUIJ, Arnold, W.

    IPC分类号： H05B37/02

    CPC分类号： H05B37/0245

    摘要： The present invention deals with a lighting control system suitable for small system configurations such as in offices and conference rooms. One or more luminaires are communicatively connected in an addressable digital bus system as well as to a unit including a processing means. In connection with installation of the device, the processing means is programmed to automatically assign a digital address to each luminaire and further to automatically identify a spatial position of each luminaire by use of light measuring cells. A relationship between the digital address and the spatial position of each luminaire is thereby provided. Furthermore, the device supports the functionality of installing pre-programmed lighting scenes suitable for the determined configuration of the luminaires as well as other factors such as the position of a window.

    CIRCUIT ARRANGEMENT FOR DISCHARGE LAMP COMPRISING A RESONANT HALF-BRIDGE CONVERTER DRIVEN BY A CLASS-E DRIVER
    6.
    发明公开
    CIRCUIT ARRANGEMENT FOR DISCHARGE LAMP COMPRISING A RESONANT HALF-BRIDGE CONVERTER DRIVEN BY A CLASS-E DRIVER 审中-公开
    电路装置WITH A通过E-CLASS DRIVER控制半桥谐振转换器的放电灯

    公开(公告)号：EP1384393A1

    公开(公告)日：2004-01-28

    申请号：EP02722591.1

    申请日：2002-04-11

    申请人： Koninklijke Philips Electronics N.V.

    发明人： BUIJ, Arnold, W.

    IPC分类号： H05B41/28

    CPC分类号： H05B41/2806 ,  Y02B20/22

    摘要： The invention concerns a circuit arrangement for igniting and operating an electrodeless gas discharge lamp by means of a high operating frequency drive voltage, comprising a half-bridge commutator having two switching elements each having an emitter electrode and a control electrode. The said switching elements are alternately switched to a conducting state by means of a resonant control circuit, which is coupled to an oscillator via a transformer. The said resonant control circuit comprises capacitor means forming part of said oscillator and a driver stage driven by an oscillator, the driver being of the class-E type. A DC supply voltage is supplied to the driver via a current-limiting circuit. According to the invention, the circuit arrangement is such that the amplitude of the high frequency drive voltage is substantially constant in a chosen frequency range.

    INTERFACE FOR DIGITAL COMMUNICATION
    9.
    发明公开
    INTERFACE FOR DIGITAL COMMUNICATION 有权
    接口数字通信

    公开(公告)号：EP1491076A1

    公开(公告)日：2004-12-29

    申请号：EP03706777.4

    申请日：2003-02-26

    申请人： Koninklijke Philips Electronics N.V.

    发明人： BEIJ, Marcel ,  BUIJ, Arnold, W.

    IPC分类号： H05B37/02

    CPC分类号： H05B37/0254

    摘要： In a digital interface comprising a current limiter, a reference voltage proportional to the bus voltage is generated and the current limiter is switched on when the incoming digital signal is higher than the reference voltage and switched of when the incoming signal is smaller than the reference voltage. The 'high/low-ratio' of the digital signal at the output of the interface is substantially improved by the use of the reference voltage.