Method for driving a light source, driving apparatus for driving the light source and liquid crystal display apparatus having the driving apparatus
    4.
    发明授权
    Method for driving a light source, driving apparatus for driving the light source and liquid crystal display apparatus having the driving apparatus 有权
    驱动光源的方法,驱动光源的驱动装置和具有该驱动装置的液晶显示装置

    公开(公告)号:US08749144B2

    公开(公告)日:2014-06-10

    申请号:US12573073

    申请日:2009-10-02

    IPC分类号: H05B37/00

    摘要: According to one or more embodiments, an inverter provides a light source with an input voltage. A protection circuit shuts down the inverter based on an overvoltage protection level that is detected based on the input voltage. A protection circuit control part shuts down the operation of the protection circuit during a predetermined interval. Abnormal operation of the protection circuit caused by a high voltage provided when the light source is turned on may be prevented. Therefore, a turn-on defect of the light source may be prevented.

    摘要翻译: 根据一个或多个实施例,逆变器为光源提供输入电压。 保护电路根据输入电压检测到的过电压保护电平关闭变频器。 保护电路控制部分在预定间隔期间关闭保护电路的操作。 可以防止当光源接通时提供的高电压引起的保护电路的异常操作。 因此,可以防止光源的导通缺陷。

    Liquid crystal display
    5.
    发明授权
    Liquid crystal display 有权
    液晶显示器

    公开(公告)号:US08169390B2

    公开(公告)日:2012-05-01

    申请号:US12011779

    申请日:2008-01-28

    IPC分类号: G09G3/36

    摘要: The present invention relates to a method of controlling luminance of a backlight based on a processed image data after receiving information of image data, in order to improve the visibility of moving picture. An inverter according to the present invention includes a first block generating a first luminance control signal with an analog value depending on the luminance control signal with a duty ratio depending on a synchronization signal. The luminance control signals generated by the respective blocks are synthesized luminance control signal. Accordingly, a liquid crystal display employing two backlight control methods can be provided. Thus, it is possible to remove the drag phenomenon of a screen and, at the same time, to improve the visibility for moving picture.

    摘要翻译: 本发明涉及一种在接收到图像数据的信息之后基于经处理的图像数据控制背光的亮度的方法,以便提高运动图像的可视性。 根据本发明的逆变器包括:第一块,其根据具有取决于同步信号的占空比的亮度控制信号产生具有模拟值的第一亮度控制信号。 由各个块产生的亮度控制信号是合成亮度控制信号。 因此,可以提供采用两种背光控制方法的液晶显示器。 因此,可以消除屏幕的拖动现象,并且同时提高运动图像的可视性。

    ULTRASOUND SYSTEM FOR ADJUSTING ULTRASONIC BEAM DIRECTION AND METHOD FOR OPERATING ULTRASOUND SYSTEM
    6.
    发明申请
    ULTRASOUND SYSTEM FOR ADJUSTING ULTRASONIC BEAM DIRECTION AND METHOD FOR OPERATING ULTRASOUND SYSTEM 审中-公开
    用于调节超声波束方向的超声波系统和操作超声波系统的方法

    公开(公告)号:US20120101382A1

    公开(公告)日:2012-04-26

    申请号:US13092392

    申请日:2011-04-22

    IPC分类号: A61B8/14

    摘要: Provided are an ultrasound system and a method for operating the ultrasound system, which may calculate a direction of an ultrasonic beam in real time and may adjust the ultrasonic beam based on the calculation result. The ultrasound system may include a probe to emit an ultrasonic beam to an object, a processor to measure a first reflection angle of the ultrasonic beam at a predetermined point in the object, a mapping table to map the measured first reflection angle to the predetermined point and to record mapping data, and a controller to determine an emission angle of the ultrasonic beam to the predetermined point based on the first reflection angle recorded in the mapping table, and to control the probe to emit the ultrasonic beam at the determined emission angle.

    摘要翻译: 提供了一种用于操作超声系统的超声系统和方法,其可以实时计算超声波束的方向,并且可以基于计算结果来调整超声波束。 该超声波系统可以包括用于向物体发射超声波束的探测器,用于测量物体中预定点处的超声波束的第一反射角的处理器,映射表将所测量的第一反射角映射到预定点 并且记录映射数据,以及控制器,用于基于记录在映射表中的第一反射角来确定超声波束到预定点的发射角,并且控制探测器以所确定的发射角度发射超声波束。

    Backlight inverter and liquid crystal display using the same
    7.
    发明授权
    Backlight inverter and liquid crystal display using the same 有权
    背光逆变器和液晶显示器使用相同

    公开(公告)号:US07723924B2

    公开(公告)日:2010-05-25

    申请号:US12058952

    申请日:2008-03-31

    IPC分类号: H05B37/02

    摘要: A backlight inverter includes a transformer boosting an input voltage at a ratio of a primary winding to a secondary winding of the transformer and outputting a first voltage and a second voltage; a protection level signal generator causing a phase delay between the first voltage and the second voltage, and generating a protection level signal, the protection level signal being a sum of the phase reversed first voltage and the second voltage; and an arc state detector comparing the protection level signal with a reference voltage and generating a detection signal; and a diving controller maintaining or stopping a supplying of an input voltage to the transformer in response to the detection signal, wherein in addition to the phase delay, another phase delay is caused by an open circuit in the transformer, so that a maximum value of the protection level signal is larger than the reference voltage and the input voltage is stopped.

    摘要翻译: 背光源逆变器包括:变压器,其以初级绕组与变压器的次级绕组的比率升高输入电压,并输出第一电压和第二电压; 保护电平信号发生器,其引起所述第一电压和所述第二电压之间的相位延迟,并且产生保护电平信号,所述保护电平信号是相位反转的第一电压和所述第二电压的和; 以及电弧状态检测器,将保护电平信号与参考电压进行比较并产生检测信号; 以及潜水控制器,其响应于所述检测信号而保持或停止向所述变压器提供输入电压,其中除了所述相位延迟之外,另一相位延迟是由所述变压器中的开路引起的, 保护电平信号大于参考电压,输入电压停止。

    BACKLIGHT INVERTER AND LIQUID CRYSTAL DISPLAY USING THE SAME
    8.
    发明申请
    BACKLIGHT INVERTER AND LIQUID CRYSTAL DISPLAY USING THE SAME 有权
    背光逆变器和使用其的液晶显示器

    公开(公告)号:US20080258645A1

    公开(公告)日:2008-10-23

    申请号:US12058952

    申请日:2008-03-31

    IPC分类号: H05B41/16

    摘要: A backlight inverter includes a transformer boosting an input voltage at a ratio of a primary winding to a secondary winding of the transformer and outputting a first voltage and a second voltage; a protection level signal generator causing a phase delay between the first voltage and the second voltage, and generating a protection level signal, the protection level signal being a sum of the phase reversed first voltage and the second voltage; and an arc state detector comparing the protection level signal with a reference voltage and generating a detection signal; and a diving controller maintaining or stopping a supplying of an input voltage to the transformer in response to the detection signal, wherein in addition to the phase delay, another phase delay is caused by an open circuit in the transformer, so that a maximum value of the protection level signal is larger than the reference voltage and the input voltage is stopped.

    摘要翻译: 背光源逆变器包括:变压器,其以初级绕组与变压器的次级绕组的比率升高输入电压,并输出第一电压和第二电压; 保护电平信号发生器,其引起所述第一电压和所述第二电压之间的相位延迟,并且产生保护电平信号,所述保护电平信号是相位反转的第一电压和所述第二电压的和; 以及电弧状态检测器,将保护电平信号与参考电压进行比较并产生检测信号; 以及潜水控制器,其响应于所述检测信号而保持或停止向所述变压器提供输入电压,其中除了所述相位延迟之外,另一相位延迟是由所述变压器中的开路引起的, 保护电平信号大于参考电压,输入电压停止。

    Inverter, Backlight Assembly Having the Same and Display Apparatus Having the Same
    9.
    发明申请
    Inverter, Backlight Assembly Having the Same and Display Apparatus Having the Same 有权
    逆变器,具有相同功能的背光组件和具有相同功能的显示装置

    公开(公告)号:US20080238333A1

    公开(公告)日:2008-10-02

    申请号:US12047418

    申请日:2008-03-13

    IPC分类号: H05B41/26 H02H7/122 H02M7/44

    CPC分类号: H05B41/2828 Y02B20/186

    摘要: A display apparatus includes a display panel and a backlight assembly including a lamp and an inverter. The inverter includes a main transformer, a main driver and a voltage controller. The main transformer applies a driving alternating current (AC) voltage to the lamp. The main driver generates an output signal controlling the main transformer based on a feedback signal from the main transformer. The voltage controller is electrically connected to a feedback terminal of the main driver to control a maximum level of a voltage applied to the feedback terminal.

    摘要翻译: 显示装置包括显示面板和包括灯和逆变器的背光组件。 逆变器包括主变压器,主驱动器和电压控制器。 主变压器向灯施加驱动交流(AC)电压。 主驱动器根据主变压器的反馈信号产生控制主变压器的输出信号。 电压控制器电连接到主驱动器的反馈端,以控制施加到反馈端的电压的最大电平。

    Apparatus for driving lamp and liquid crystal display device having the same

    公开(公告)号:US20060050048A1

    公开(公告)日:2006-03-09

    申请号:US11217006

    申请日:2005-08-31

    IPC分类号: G09G3/36

    摘要: Disclosed is a liquid crystal display device having a lamp driving apparatus for preventing lamps from being damaged due to electric current variation among the lamps. A DC/DC converter converts an externally provided DC voltage input into a converted DC voltage signal having a predetermined voltage level. A DC/AC inverter inverts the converted DC voltage signal into an AC voltage signal to supply the inverted AC voltage signal to an input terminal of a lamp. A power controller detects electric current flowing the lamp at an output terminal of the lamp to control the level of the inverted AC voltage signal output from the DC/AC inverter and bypasses a part of electric current applied to the input terminal of the lamp when a level of the detected electric current is higher than a predetermined threshold value. Therefore, when the level of the electric current flowing through the lamp exceeds the predetermined threshold value, the power controller bypasses the part of the electric current supplied to the lamp to the ground, thereby decreasing the amount of the electric current supplied to the lamp and preventing the lamp from being damaged.