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公开(公告)号：US07279808B2
公开(公告)日：2007-10-09
申请号：US11393476
申请日：2006-03-30
IPC分类号： H02J1/00
CPC分类号： H02M3/337 , H02M3/33561 , Y02B70/1433 , Y10T307/406
摘要： The present invention relates to a DC voltage converter with soft switching of the type with half-bridge arrangement at the primary side and of quasi-resonant half-wave type at the secondary side. This converter comprises a single transformer and can generate a plurality of regulated voltages at output. It furthermore comprises a resonant circuit for creating a half-wave resonant current in the secondary winding and charging a first load capacitor so as to produce a first DC voltage. It furthermore comprises an inductive circuit connected between said secondary winding and a second load capacitor able to generate a current so as to charge the second load capacitor during a part of the half-wave of the resonant current flowing in the secondary winding and thus produce a second DC voltage.
摘要翻译： 本发明涉及一种具有初级侧半桥布置类型的软开关和二次侧的准谐振半波型的直流电压转换器。 该转换器包括单个变压器并且可以在输出时产生多个调节电压。 此外，还包括用于在次级绕组中产生半波谐振电流并对第一负载电容器充电以产生第一直流电压的谐振电路。 它还包括连接在所述次级绕组和能够产生电流以便在次级绕组中流过的谐振电流的半波的一部分期间对第二负载电容器充电的感应电路，从而产生 第二直流电压。
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公开(公告)号：US20060221652A1
公开(公告)日：2006-10-05
申请号：US11393254
申请日：2006-03-30
IPC分类号： H02M3/335
CPC分类号： H02M3/337
摘要： The present invention relates to a DC/DC converter of half-bridge type with soft switching comprising a transformer. The primary of the converter is of the type with half-bridge arrangement and is linked to an input voltage source by way of two switches and the secondary is of half-wave type and is linked to a load by means of an inductance. Means are provided for alternately controlling the two switches, at fixed frequency, by pulse width modulation. To reduce the number of components of the converter, a capacitor of small value is arranged in series with said primary winding, which capacitor referred back to the secondary is designed to resonate with said inductance. The inductance is the transformer's leakage inductance seen from the secondary. The switches are advantageously switched while the current in said inductance is not zero.
摘要翻译： 本发明涉及具有包括变压器的软开关的半桥式DC / DC转换器。 转换器的主要部件是具有半桥布置的类型，并通过两个开关连接到输入电压源，次级是半波型，并通过电感连接到负载。 提供了用于通过脉冲宽度调制以固定频率交替地控制两个开关的装置。 为了减少转换器的部件数量，与所述初级绕组串联布置一个小值的电容器，被称为次级的电容被设计成与所述电感谐振。 电感是从次级看到的变压器漏电感。 有利地，开关切换，同时所述电感中的电流不为零。
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公开(公告)号：US20070279375A1
公开(公告)日：2007-12-06
申请号：US11805432
申请日：2007-05-23
IPC分类号： G09G3/36
CPC分类号： G09G3/3406 , G09G2320/0247 , G09G2320/064
摘要： In a display device images are reproduced by controlling the amount of light provided by a light source by means of light modulators for individual pixels. Subsequent images are synchronised to each other by synchronisation signals regularly occurring at intervals corresponding to first time periods. The backlight is controlled to emit light during fractions of second time periods or whole second time periods which are equal to or shorter than first time periods. Several of the second time periods may be nested and evenly distributed within the first time period. The signals for driving the backlight are preferably generated in synchronism with the horizontal pixel clock. Each of the fractions of second time periods or whole second time periods during which light is emitted is divided into a number of elementary steps, wherein each elementary step corresponds to a number of pixel clock periods. The number of elementary steps is chosen according to the desired ratio of control of the backlight or contrast ratio, e.g. 100 elementary steps for a contrast ratio of 1:100. During each of the second time periods the backlight is controlled to be on for a number of elementary steps corresponding to the desired contrast ratio.
摘要翻译： 在显示装置中，通过用于各个像素的光调制器控制由光源提供的光量来再现图像。 随后的图像通过以与第一时间段对应的间隔定期出现的同步信号彼此同步。 控制背光被控制在第二时间段的分数或等于或短于第一时间段的整个第二时间周期内发光。 第二时间段中的几个可以在第一时间段内嵌套和均匀分布。 用于驱动背光的信号优选地与水平像素时钟同步地产生。 将光发射的第二时间段或整个第二时间段的分数分为多个基本步骤，其中每个基本步骤对应于多个像素时钟周期。 基本步骤的数量根据所需的背光或对比度比例的比例来选择。 对比度为1：100的100个基本步骤。 在每个第二时间段期间，背光被控制为对应于期望的对比度比例的多个基本步骤开启。
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4.发明申请Amplifier designed to generate a rectangular voltage signal with soft switching on a capacitive load 审中-公开放大器设计用于在电容性负载上产生具有软开关的矩形电压信号公开(公告)号：US20060077132A1
公开(公告)日：2006-04-13
申请号：US11246623
申请日：2005-10-07
申请人： Didier Ploquin
发明人： Didier Ploquin
IPC分类号： G09G3/28
CPC分类号： H03F3/2173 , G09G3/2965
摘要： The present invention relates to an amplifier designed to generate a rectangular voltage signal with soft switching on a capacitive load, comprising a half-bridge structure consisting of two switches, which is connected between a supply terminal and a reference terminal, the mid-point of said structure being connected to said capacitive load, and a soft-switching circuit with energy recovery. To limit the conduction losses in the amplifier, the soft-switching circuit with energy recovery comprises no active component, such as a diode or transistor. According to the invention, it is formed only from an inductive elements connected in series with a capacitive element between the terminals of said capacitive load. Advantageously, the inductive element comprises a saturable inductor in order to limit the conduction losses of the amplifier.
摘要翻译： 本发明涉及一种设计用于在电容性负载上产生具有软开关的矩形电压信号的放大器，包括由连接在供电端子和参考端子之间的两个开关组成的半桥结构， 所述结构连接到所述电容性负载，以及具有能量恢复的软开关电路。 为了限制放大器的导通损耗，具有能量回收的软开关电路不包括有源元件，例如二极管或晶体管。 根据本发明，其仅由与所述容性负载的端子之间的电容元件串联连接的感应元件形成。 有利地，电感元件包括可饱和电感器，以便限制放大器的导通损耗。
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公开(公告)号：US08115701B2
公开(公告)日：2012-02-14
申请号：US11887711
申请日：2006-03-22
IPC分类号： G09G3/28
CPC分类号： G09G3/2965 , G09G3/294 , G09G2330/02 , G09G2330/025
摘要： The present invention concerns a device for generating a rectangular sustain voltage between the line scanning electrodes and the line common electrodes of luminous cells in a plasma panel. The device includes a first sustain amplifier connected to the line scanning electrode of the cells to produce the transitions of the first sustain voltage signal, and a second sustain amplifier connected to the line common electrode of the cells to produce the transitions of the second sustain voltage signal. It also includes an insulated voltage supply circuit which is connected directly to the line scanning electrodes and to the line common electrodes of the cells in order to hold the end-of-transition voltage on said line scanning electrodes and said line common electrodes.
摘要翻译： 本发明涉及一种用于在等离子体面板中的行扫描电极和发光单元的线公共电极之间产生矩形维持电压的装置。 该装置包括连接到单元的行扫描电极以产生第一维持电压信号的转变的第一维持放大器和连接到单元的线公共电极的第二维持放大器，以产生第二维持电压的转变 信号。 它还包括一个绝缘电压供应电路，其直接连接到行扫描电极和单元的线公共电极，以便保持所述线扫描电极和所述线公共电极上的转变后电压。
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公开(公告)号：US20090213044A1
公开(公告)日：2009-08-27
申请号：US11887711
申请日：2006-03-22
IPC分类号： G09G3/28
CPC分类号： G09G3/2965 , G09G3/294 , G09G2330/02 , G09G2330/025
摘要： The present invention concerns a device for generating a rectangular sustain voltage between the line scanning electrodes and the line common electrodes of luminous cells in a plasma panel. The device includes a first sustain amplifier connected to the line scanning electrode of the cells to produce the transitions of the first sustain voltage signal, and a second sustain amplifier connected to the line common electrode of the cells to produce the transitions of the second sustain voltage signal. It also includes an insulated voltage supply circuit which is connected directly to the line scanning electrodes and to the line common electrodes of the cells in order to hold the end-of-transition voltage on said line scanning electrodes and said line common electrodes.
摘要翻译： 本发明涉及一种用于在等离子体面板中的行扫描电极和发光单元的线公共电极之间产生矩形维持电压的装置。 该装置包括连接到单元的行扫描电极以产生第一维持电压信号的转变的第一维持放大器和连接到单元的线公共电极的第二维持放大器，以产生第二维持电压的转变 信号。 它还包括一个绝缘电压供应电路，其直接连接到行扫描电极和单元的线公共电极，以便保持所述线扫描电极和所述线公共电极上的转变后电压。
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公开(公告)号：US20080259649A1
公开(公告)日：2008-10-23
申请号：US11788432
申请日：2007-04-20
IPC分类号： H02M3/335
CPC分类号： H02M3/3378 , H02M3/33592 , Y02B70/1433 , Y02B70/1475
摘要： The switched mode power supply comprises an inductor, a switching transistor coupled in series with the inductor, and a rectifier circuit. The rectifier circuit comprises a switch coupled with the inductor for a rectification of an output voltage and a control circuit operating in a monostable mode. The switch is operated in particular in a synchronous mode with the same switching frequency as the switching transistor. The rectifier circuit can be used advantageously with a switched mode power supply having a push-pull half-bridge configuration and operating as a resonant converter or a quasi-resonant converter with soft switching for an application within a plasma television set.
摘要翻译： 开关模式电源包括电感器，与电感器串联耦合的开关晶体管和整流器电路。 整流电路包括与电感器耦合的开关，用于整流输出电压和以单稳态运行的控制电路。 开关特别是以与开关晶体管相同的开关频率的同步模式操作。 整流电路可有利地用于具有推挽半桥配置并作为谐振转换器或具有用于等离子体电视机内的应用的软开关的准谐振转换器的开关模式电源。
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公开(公告)号：US20060220591A1
公开(公告)日：2006-10-05
申请号：US11393476
申请日：2006-03-30
IPC分类号： H05B37/02
CPC分类号： H02M3/337 , H02M3/33561 , Y02B70/1433 , Y10T307/406
摘要： The present invention relates to a DC voltage converter with soft switching of the type with half-bridge arrangement at the primary side and of quasi-resonant half-wave type at the secondary side. This converter comprises a single transformer and can generate a plurality of regulated voltages at output. It furthermore comprises a resonant circuit for creating a half-wave resonant current in the secondary winding and charging a first load capacitor so as to produce a first DC voltage. It furthermore comprises an inductive circuit connected between said secondary winding and a second load capacitor able to generate a current so as to charge the second load capacitor during a part of the half-wave of the resonant current flowing in the secondary winding and thus produce a second DC voltage.
摘要翻译： 本发明涉及一种具有初级侧半桥布置类型的软开关和二次侧的准谐振半波型的直流电压转换器。 该转换器包括单个变压器并且可以在输出时产生多个调节电压。 此外，还包括用于在次级绕组中产生半波谐振电流并对第一负载电容器充电以产生第一直流电压的谐振电路。 它还包括连接在所述次级绕组和能够产生电流以便在次级绕组中流过的谐振电流的半波的一部分期间对第二负载电容器充电的感应电路，从而产生 第二直流电压。
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公开(公告)号：US08314567B2
公开(公告)日：2012-11-20
申请号：US12310750
申请日：2007-08-08
IPC分类号： H05B39/02
CPC分类号： H05B33/0815 , G09G3/3426 , H05B33/083
摘要： A circuit for controlling illumination means in a display includes illumination means arranged in a series-connection that are supplied with an essentially constant current. For individually controlling the illumination means, switches are provided for bypassing individual illumination means, maintaining the essentially constant current in the series-connection. The switches are floating with respect to a ground potential. A coupling means is thus provided for proper control of the switches. In a development of the invention a floating local power supply is provided with each illumination means and switch for operating the switch. The local power supply is, in one embodiment, powered by the control signal that is used for controlling the bypass switch. In another embodiment provision is made for supplying power to the floating local power supply. A driving method according to the embodiments of the circuit is also described.
摘要翻译： 用于在显示器中控制照明装置的电路包括布置成以基本上恒定电流供电的串联连接的照明装置。 为了单独控制照明装置，提供了用于旁路各个照明装置的开关，保持串联连接中基本上恒定的电流。 开关相对于地电位是浮动的。 因此提供耦合装置用于适当地控制开关。 在本发明的开发中，浮置的局部电源设置有用于操作开关的每个照明装置和开关。 在一个实施例中，本地电源由用于控制旁路开关的控制信号供电。 在另一个实施例中，提供用于向浮动本地电源供电。 还描述了根据电路实施例的驱动方法。
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公开(公告)号：US20090237004A1
公开(公告)日：2009-09-24
申请号：US12310750
申请日：2007-08-08
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , G09G3/3426 , H05B33/083
摘要： A circuit for controlling illumination means in a display includes illumination means arranged in a series-connection that are supplied with an essentially constant current. For individually controlling the illumination means, switches are provided for bypassing individual illumination means, maintaining the essentially constant current in the series-connection. The switches are floating with respect to a ground potential. A coupling means is thus provided for proper control of the switches. In a development of the invention a floating local power supply is provided with each illumination means and switch for operating the switch. The local power supply is, in one embodiment, powered by the control signal that is used for controlling the bypass switch. In another embodiment provision is made for supplying power to the floating local power supply. A driving method according to the embodiments of the circuit is also described.
摘要翻译： 用于在显示器中控制照明装置的电路包括布置成以基本上恒定电流供电的串联连接的照明装置。 为了单独控制照明装置，提供了用于旁路各个照明装置的开关，保持串联连接中基本上恒定的电流。 开关相对于地电位是浮动的。 因此提供耦合装置用于适当地控制开关。 在本发明的开发中，浮置的局部电源设置有用于操作开关的每个照明装置和开关。 在一个实施例中，本地电源由用于控制旁路开关的控制信号供电。 在另一个实施例中，提供用于向浮动本地电源供电。 还描述了根据电路实施例的驱动方法。
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