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    • 23. 发明申请
    • LED driving apparatus
    • LED驱动装置
    • US20070188112A1
    • 2007-08-16
    • US11642840
    • 2006-12-21
    • Jeong-il KangSang-hoon Lee
    • Jeong-il KangSang-hoon Lee
    • H05B41/36
    • H05B33/0887H05B33/0815Y02B20/347
    • An apparatus for driving an LED is provided. The driving apparatus may have an LED unit including at least one LED, and a current controlling unit for controlling the magnitude of current flowing through the LED unit in response to a control signal. The LED driving apparatus may include a voltage detecting unit for detecting a voltage across the LED unit and a control signal blocking unit for comparing the voltage detected by the voltage detecting unit with a reference voltage. The control signal blocking part prevents the control signal from being applied to the current controlling unit when the detected voltage is lower than the reference voltage. With this configuration, the LED driving apparatus is capable of preventing a circuit from being damaged by overcurrent by cutting off a control signal when a determined number or more of LEDs are short-circuited or otherwise not operational.
    • 提供一种用于驱动LED的装置。 驱动装置可以具有包括至少一个LED的LED单元和用于响应于控制信号来控制流过LED单元的电流的大小的电流控制单元。 LED驱动装置可以包括用于检测LED单元上的电压的电压检测单元和用于将由电压检测单元检测的电压与参考电压进行比较的控制信号阻挡单元。 当检测到的电压低于参考电压时,控制信号阻挡部分防止控制信号施加到电流控制单元。 利用这种配置,LED驱动装置能够通过在确定的LED数量多或不能工作的情况下通过切断控制信号来防止电路被过电流损坏。
    • 24. 发明申请
    • Display apparatus and method of providing power to light source
    • 向光源提供电力的显示装置和方法
    • US20070057936A1
    • 2007-03-15
    • US11496444
    • 2006-08-01
    • Sang-hoon LeeJeong-il KangYung-jun ParkKyoung-geun Lee
    • Sang-hoon LeeJeong-il KangYung-jun ParkKyoung-geun Lee
    • G09G5/00
    • H05B33/0818G09G3/3406G09G2320/064G09G2330/021Y02B20/346
    • The present invention provides a display apparatus and method supplying power to a light source where driving power is supplied to the light source, a main power path is provided through which the driving power is supplied from the power supply to the light source, a standby power path is branched from the main power path and returned to the power supply, a switching unit selects the driving power to be supplied from the power supply to either of the main power path or the standby power path, a standby power adjuster adjusts standby power applied to the standby power path and a controller controls the standby power adjuster to make the standby power be within an allowable range when the power is not applied to the main power path. Accordingly, a display apparatus and method which prevent a standby power from being continuously boosted up when a light source is turned off, thereby improving a display performance thereof are provided.
    • 本发明提供了向向光源提供驱动电力的光源供电的显示装置和方法,提供从电源向光源供给驱动电力的主电力通路,备用电力 路径从主电源路径分支并返回到电源,开关单元选择从电源向主电源路径或备用电源路径中的任一个提供的驱动电力,备用电力调整器调整应用的待机电力 到待机电源路径,并且控制器控制备用电源调节器,以使电源未被施加到主电源路径时使备用电源在允许范围内。 因此,提供了当光源关闭时防止待机功率被持续提升的显示装置和方法,从而提高其显示性能。
    • 26. 发明授权
    • Display apparatus and control method thereof
    • 显示装置及其控制方法
    • US08502767B2
    • 2013-08-06
    • US11762519
    • 2007-06-13
    • Sang-hoon LeeJeong-il Kang
    • Sang-hoon LeeJeong-il Kang
    • G09G3/36
    • H05B33/0866G09G3/3406G09G2320/0626G09G2360/16
    • A display apparatus comprising a display unit and a plurality of light emitting diodes (LEDs) provided in a backlight that illuminates the display unit, the display apparatus includes: a power supplier; a current detector which detects a value of a current flowing in each of the LEDs; a current adjusting unit which compares a target current value which is supplied to the LED with a current value detected by the current detector and controls the value of the current flowing in the LED; and a controller which determines the target current value based on grayscale information of a video signal which is displayed on the display unit, provides the target current value to the current adjusting unit, and provides a virtual target current value that is higher than the target current value to the current adjusting unit for a predetermined time period if the target current value is determined.
    • 一种显示装置,包括显示单元和设置在照明所述显示单元的背光中的多个发光二极管(LED),所述显示装置包括:电源; 电流检测器,其检测在每个LED中流动的电流的值; 电流调节单元,其将提供给LED的目标电流值与由电流检测器检测的电流值进行比较,并控制在LED中流动的电流的值; 以及控制器,其基于显示在显示单元上的视频信号的灰阶信息来确定目标电流值,将目标电流值提供给当前调整单元,并提供高于目标电流的虚拟目标电流值 如果确定了目标电流值,则预定时间段内的当前调整单元的值。
    • 29. 发明授权
    • Light emitting apparatus and control method thereof
    • 发光装置及其控制方法
    • US07646154B2
    • 2010-01-12
    • US11589809
    • 2006-10-31
    • Jeong-il KangSang-hoon LeeYung-jun Park
    • Jeong-il KangSang-hoon LeeYung-jun Park
    • H05B37/00
    • H05B33/083H05B33/0818
    • An apparatus and method for controlling emission of light are provided. The light emitting apparatus comprises a plurality of first light emitting parts which are connected with each other in series, a first current supply which supplies a current to the plurality of first light emitting parts, a plurality of switches which are respectively connected with the plurality of first light emitting parts in parallel to make the current be transmitted to or bypass the first light emitting parts and a controller which receives brightness information corresponding to the respective first light emitting parts and controls the plurality of first switches to make overall light emitting time of the first light emitting parts within time intervals correspond to a brightness level of the brightness information. The present invention provides an apparatus and method for emitting light by driving a plurality of light emitting parts to independently emit light in various brightness levels with a simplified circuit configuration and improved efficiency.
    • 提供了一种用于控制光发射的装置和方法。 发光装置包括彼此串联连接的多个第一发光部,向多个第一发光部供给电流的第一电流源,分别与多个第一发光部连接的多个开关 第一发光部分并联以使电流传输到或绕过第一发光部分;以及控制器,其接收对应于各个第一发光部分的亮度信息,并控制多个第一开关,以使整个发光部分的总发光时间 时间间隔内的第一发光部分对应于亮度信息的亮度级。 本发明提供一种用于通过驱动多个发光部件以通过简化的电路配置独立发射各种亮度的光并提高效率来发光的装置和方法。