公开(公告)号：EP1518396A1

公开(公告)日：2005-03-30

申请号：EP03727849.6

申请日：2003-05-27

申请人： Koninklijke Philips Electronics N.V.

发明人： VERHEES, Johannes, L., M. ,  GROOT HULZE, Hendrikus, W. ,  KOVACEVIC, Vedran

IPC分类号： H04N3/185

CPC分类号： H04N3/185

摘要： The invention relates to a control circuit (2) for controlling an electrical signal (4) over a load (6) such as a deflection circuit of a Cathode Ray Tube, comprising a first transistor (8) for switching the electrical signal (4) over the load (6), wherein the load (6) is coupled to a collector (10) and an emitter (12) of the first transistor (8), and wherein the control circuit (2) also comprises a resonance circuit (14) which is coupled to a basis (16) and the emitter (12) of the first transistor (8) for driving the first transistor (8), a power supply (18) which is coupled to the resonance circuit (14) for driving the resonance circuit (14), a pulse generating circuit (20) which is coupled to the power supply (18) and the resonance circuit (14), and a processing unit (24) with a memory unit (26). Furthermore the invention relates to a method for adjusting a control circuit according to the invention.

公开(公告)号：EP1401194A1

公开(公告)日：2004-03-24

申请号：EP03021202.1

申请日：2003-09-18

申请人： LG ELECTRONICS INC.

发明人： Suk, Sang Moon

IPC分类号： H04N3/185

CPC分类号： H04N3/185

摘要： Disclosed is a voltage stabilizing circuit for a high-voltage/deflection separation type video display appliance. The voltage stabilizing circuit includes an SMPS transformer for receiving an electric power through its primary winding and deriving voltage in its secondary winding, a regulation compensating coil for inducing an electric power corresponding to the electric power from the secondary winding of the SMPS transformer, a PWM control circuit for receiving the electric power induced in the regulation compensating coil to output a PWM control signal corresponding to the received electric power, and a switching section for switching the input electric power inputted to primary winding of the SMPS transformer according to the PWM control signal from the PWM control circuit.

摘要翻译： 公开了一种用于高压/偏转分离型视频显示器具的电压稳定电路。 电压稳定电路包括SMPS变压器，用于通过其初级绕组接收电力并在其次级绕组中导出电压;调节补偿线圈，用于感应与来自SMPS变压器的次级绕组的电力相对应的电力; PWM 控制电路，用于接收在调节补偿线圈中感应的电力，以输出与接收的电力相对应的PWM控制信号;以及切换部分，用于根据PWM控制信号切换输入到SMPS变压器的初级绕组的输入电力 来自PWM控制电路。

公开(公告)号：EP1290567A2

公开(公告)日：2003-03-12

申请号：EP01941701.3

申请日：2001-05-31

申请人： Thomson Licensing S.A.

发明人： TESTIN, William, John

IPC分类号： G06F13/42

CPC分类号： H04N3/185 ,  G06F2213/0016 ,  H04N5/44 ,  H04N5/4401 ,  H04N5/45 ,  H04N5/63 ,  H04N21/4436

摘要： A circuit configuration applicable to systems such as consumer electronics devices enables communication between components such as integrated circuits connected to the bus. According to an embodiment, the RUN power supplies are turned to an OFF state is response to a fault condition. An interface circuit associated with an integrated circuit coupled to the bus controls the loading on the bus caused by the interface circuit and the integrated circuit such that communication between devices on the bus can continue. Therefore, even when a fault condition results in the loss of the RUN power supplies, a command can be transmitted over the bus from a first integrated circuit in a powered state to a second integrated circuit in the powered state while a third integrated circuit connected to the bus is in an unpowered state.

公开(公告)号：EP0706738B1

公开(公告)日：2002-01-09

申请号：EP94920010.9

申请日：1994-05-16

申请人： APPLE COMPUTER, INC.

发明人： CAPPELS, Richard, D., Sr.

IPC分类号： H04N3/185

CPC分类号： H04N3/185 ,  H01J2229/0015

公开(公告)号：EP0978998A3

公开(公告)日：2001-09-19

申请号：EP99401966.9

申请日：1999-08-02

申请人： Thomson Consumer Electronics, Inc.

发明人： Fernsler, Ronald Eugène

IPC分类号： H04N3/185 ,  H04N3/27

CPC分类号： H04N3/185 ,  H04N5/46

摘要： In a video display operable at multiple horizontal scanning frequencies, a synchronized high voltage generator (200) is substantially undisturbed during synchronizing source selection or interruption. The generator comprises a controlled oscillator (210) generating a drive signal (211). A source of pulses (Hrt) synchronizes the controlled oscillator (210) and has a plurality of scanning frequencies. A high voltage generator (250) is coupled to the drive signal (211) and generates a display energizing supply (202). The scanning frequencies occur in two frequency bands, and when synchronized the oscillator (210) generates the drive signal having a frequency only in a higher frequency band of the two frequency bands. In a further inventive arrangement a high voltage generator (200) for a video display is operable at a plurality of horizontal scanning frequencies and is controlled such that the high voltage supply remains substantially constant during an interruption of horizontal scanning pulses (Hrt) from the source.

公开(公告)号：EP1039744A1

公开(公告)日：2000-09-27

申请号：EP00104897.4

申请日：2000-03-08

申请人： DEUTSCHE THOMSON-BRANDT GMBH

发明人： Bicheler, Hans-Günter ,  Rilly, Gerard

IPC分类号： H04N3/185

CPC分类号： H04N3/185 ,  Y10T307/799

摘要： The circuit for stabilizing a high voltage for a picture tube comprises a high-voltage transformer (TR), which has a primary winding (W1) and a high-voltage winding (WH), a switch (SP), which is connected in series with the primary winding (W1), and a control loop for high-voltage stabilization. The control voltage (UR) of the control loop, with which the switch (SP) is driven, is derived from two signals (DC, AC) in this case. The first signal (DC) is tapped off from a secondary auxiliary winding (W4) at the transformer (TR) and supplies a static control voltage component, and the second signal (AC) is derived directly from the high voltage (HV) and supplies a measure of the dynamic loading on the high-voltage generator. The static control voltage component is, in particular, a measure of the value of the high voltage during the vertical line flyback, when the screen is black and the high-voltage transformer is minimally loaded. In this case, the auxiliary winding supplies a voltage which is proportional to the secondary flyback pulse. The second signal (AC) is a fast control signal, since it is derived directly from the high voltage (HV).
Cost-effective standard components can be used for realizing the circuit. The stabilization circuit can be used in particular in high-voltage generators for high picture powers of picture tubes, as are used for example in large television sets and computer monitors.

摘要翻译： 用于稳定显像管的高电压的电路包括具有初级绕组（W1）和高压绕组（WH）的高压变压器（TR），串联连接的开关（SP） 与初级绕组（W1）和用于高电压稳定的控制回路。 在这种情况下，由两个信号（DC，AC）导出开关（SP）驱动的控制回路的控制电压（UR）。 第一信号（DC）从变压器（TR）的辅助辅助绕组（W4）分接，并提供静态控制电压分量，第二信号（AC）直接从高电压（HV）导出并提供 测量高压发生器的动态负载。 特别地，当屏幕为黑色且高压变压器最小负载时，静态控制电压分量特别是在垂直线反激期间的高电压值的量度。 在这种情况下，辅助绕组提供与二次反激脉冲成比例的电压。 第二信号（AC）是快速控制信号，因为它直接从高电压（HV）导出。 高性价比的标准组件可用于实现电路。 稳定电路特别可用于高压发生器用于显像管的高图像功率，例如用于大型电视机和计算机显示器中。

公开(公告)号：EP1001515A2

公开(公告)日：2000-05-17

申请号：EP99121522.9

申请日：1999-10-29

申请人： DEUTSCHE THOMSON-BRANDT GMBH

发明人： Bicheler, Hans-Günter ,  Rilly, Gerard

IPC分类号： H02M3/335 ,  H04N3/18 ,  H04N3/185

CPC分类号： H02M3/28 ,  H02M3/335 ,  H04N3/18 ,  H04N3/185

摘要： The invention specifies a switched-mode power supply in which a forward converter is combined with a flyback converter when only one transformer (TR) is used. The forward converter comprises the transformer (TR), a storage coil (L1), a switch (Sp) on the primary side and a storage capacitor (Ca) on the secondary side. The energy stored in the storage capacitor (Ca) is transferred to a further winding of the transformer (TR), for example a high-voltage winding (WH), using a switch (Ss) which operates on the flyback-converter principle and is arranged on the secondary side on a winding (W2) of the transformer (TR). In this arrangement, the power drawn from the output winding (WH) determines the value of the voltage to which the storage capacitor (Ca) is charged.
The switched-mode power supply can be used, in particular, for high-voltage generation for a television set or a computer monitor. To generate a high picture power, it can be connected to the mains directly via a bridge rectifier.

摘要翻译： 本发明规定了当仅使用一个变压器（TR）时正向转换器与反激式转换器组合的开关模式电源。 正激转换器包括变压器（TR），存储线圈（L1），初级侧的开关（Sp）和次级侧的存储电容器（Ca）。 存储在存储电容器（Ca）中的能量使用开关（Ss）传输到变压器（TR）的另一个绕组，例如高压绕组（WH），该开关（Ss）在反激变换器原理上工作，并且 布置在变压器（TR）的绕组（W2）上的次级侧上。 在这种布置中，从输出绕组（WH）汲取的功率决定了存储电容器（Ca）被充电的电压的值。 开关模式电源尤其可用于电视机或计算机监视器的高压生产。 要产生高图像功率，可以通过桥式整流器直接连接电源。

公开(公告)号：EP0991266A1

公开(公告)日：2000-04-05

申请号：EP99401964.4

申请日：1999-08-02

申请人： Thomson Consumer Electronics, Inc.

发明人： Jackson, David Ross

IPC分类号： H04N3/185

CPC分类号： H04N3/185

摘要： A high-voltage power supply of a video display apparatus provides an ultor voltage (U) and a focus voltage (F) to a cathode ray tube. A low-voltage power supply (20) provides a variable voltage (HV_B+) to a primary winding (1) of a flyback transformer (IHVT) of the high-voltage power supply (40). The magnitude of the variable voltage is responsive to first (V FB1 ) and second (V FB2 ) feedback signals provided by first (FB1) and second (FB2) negative feedback paths. The first feedback signal is derived from the ultor voltage and is used to regulate the ultor voltage. The second feedback signal is provided by the low-voltage power supply via a path that bypasses the high-voltage power supply, and is summed with the first feedback signal to ensure that the focus voltage remains at or above a predetermined minimum voltage.

摘要翻译： 视频显示装置的高压电源向阴极射线管提供阳极电压和聚焦电压。 低压电源为高压电源的回扫变压器的初级绕组提供可变电压。 可变电压的幅度响应于由第一和第二负反馈路径提供的第一和第二反馈信号。 第一反馈信号来源于阳极电压，用于调节阳极电压。 第二反馈信号由旁路高压电源的路径由低压电源提供，并且与第一反馈信号相加，以确保聚焦电压保持在或超过预定的最小电压。

公开(公告)号：EP0952731A3

公开(公告)日：2000-01-05

申请号：EP99107833.8

申请日：1999-04-20

申请人： Murata Manufacturing Co., Ltd.

发明人： Imamura, Nobuaki, c/o (A170) Intell. Prop. Dep. ,  Takahashi, Haruo, c/o (A170) Intell. Prop. Dep.

IPC分类号： H04N3/185 ,  H04N3/223

CPC分类号： H04N3/185

摘要： A deflection current/high voltage integration type power supply has a flyback transformer (T) having a primary winding (L1) and a secondary winding (L2); a series circuit of a deflection coil (LDY) and a first capacitor (Cs), connected in series to the primary winding (L1) of the flyback transformer (T); a resonance capacitor (C1) connected in parallel to the series circuit of the deflection coil (LDY) and the first capacitor (Cs); a first switching element (Q1), connected in parallel with the series circuit of the deflection coil (LDY) and the first capacitor (Cs), to be turned on/turned off by a drive signal or a signal synchronous to the drive signal so that a high voltage is generated at the secondary winding (L2) of the flyback transformer (T) and a deflection current flows in the deflection coil (LDY); a parallel connection circuit of a second switching element (Q2) and a second capacitor (C2), connected in series to the primary winding (L1) of the flyback transformer (T); and a switching control means (11) to control the deflection current flowing in the deflection coil (LDY) and the high voltage generated at the secondary winding (L2) of the flyback transformer (T) by controlling the on-timing and the off-timing of the second switching element (Q2) in approximate synchronism with the drive signal.

摘要翻译： 偏转电流/高压集成型电源具有具有初级绕组（L1）和次级绕组（L2）的回扫变压器（T）; 与回扫变压器（T）的初级绕组（L1）串联连接的偏转线圈（LDY）和第一电容器（Cs）的串联电路; 与偏转线圈（LDY）和第一电容器（Cs）的串联电路并联连接的谐振电容器（C1）; 所述第一开关元件（Q1）与所述偏转线圈（LDY）和所述第一电容器（Cs）的串联电路并联连接，以由驱动信号或与所述驱动信号同步的信号导通/截止，从而 在回扫变压器（T）的次级绕组（L2）产生高电压，并且偏转电流在偏转线圈（LDY）中流动; 与回扫变压器（T）的初级绕组（L1）串联连接的第二开关元件（Q2）和第二电容器（C2）的并联连接电路; 以及切换控制装置（11），通过控制导通定时和断开控制装置（11）来控制在回扫变压器（T）中在偏转线圈（LDY）中流动的偏转电流和次级绕组（L2）产生的高电压， 第二开关元件（Q2）的定时大致与驱动信号同步。

公开(公告)号：EP0837547A3

公开(公告)日：1999-11-03

申请号：EP98100495.5

申请日：1994-11-15

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Ochiai, Masashi

IPC分类号： H02M1/12 ,  H02M3/335

CPC分类号： H02M1/4258 ,  H02M3/335 ,  H02M3/33523 ,  H04N3/185 ,  Y02B70/126

摘要： A power circuit including an input circuit for receiving an AC power supply voltage from an AC power line, a primary circuit rectifier coupled to the input circuit for rectifying the AC power supply voltage, a transformer having a primary winding, a secondary winding and a tertiary winding, DC coupling member for coupling an output terminal of the primary circuit rectifier to one end of the primary winding of the transformer, a secondary circuit rectifier for rectifying a secondary circuit AC voltage induced across the secondary winding of the transformer to output a DC voltage resulted by its rectification from the power circuit, a switching element coupled to the other end of the primary winding of the transformer, a controller for controlling the duty ratio of the ON/OFF operations of the switching element so as that the output DC voltage from the secondary circuit rectifier is regulated, and a switched frequency AC signal generator, including the tertiary winding of which one end is coupled to one end side of the primary winding of the transformer and a first smoothing capacitor coupled between the other end of the tertiary winding and a reference potential line, for generating an AC signal responsive to the duty ratio of the ON/OFF operation of the switching element across the tertiary winding.