LCD backlight dimming, LCD/image signal compensation and method of controlling an LCD display
    1.
    发明授权
    LCD backlight dimming, LCD/image signal compensation and method of controlling an LCD display 有权
    LCD背光调光,LCD /图像信号补偿及LCD显示控制方法

    公开(公告)号:US08514166B2

    公开(公告)日:2013-08-20

    申请号:US12129305

    申请日:2008-05-29

    IPC分类号: G09G3/36

    摘要: A method of reducing power consumption in a liquid crystal display illuminated by a backlight device includes dimming the backlight and adjusting the intensity of the image to compensate for the dimmed backlight. A dimming factor for the backlight is based on a clipping point determining from the pixel intensity distribution of the image signal. The intensity of the image is adjusted based on the dimming factor, wherein a first tone mapping function is used to adjust pixel intensities below an intensity threshold and a second tone mapping function is used to adjust pixel intensities above the intensity threshold.

    摘要翻译: 一种降低由背光装置照亮的液晶显示器中的功耗的方法包括使背光调光并调节图像的强度以补偿暗淡的背光。 用于背光的调光因子基于根据图像信号的像素强度分布确定的剪切点。 基于调光因子调整图像的强度,其中使用第一色调映射函数来调整低于强度阈值的像素强度,并且使用第二色调映射函数来调整高于强度阈值的像素强度。

    Method and Apparatus for Enhancing the Dynamic Range of an Image
    4.
    发明申请
    Method and Apparatus for Enhancing the Dynamic Range of an Image 审中-公开
    用于增强图像动态范围的方法和装置

    公开(公告)号:US20090263037A1

    公开(公告)日:2009-10-22

    申请号:US12105505

    申请日:2008-04-18

    IPC分类号: G06K9/40

    摘要: A method of converting an image signal from an original dynamic range to a target dynamic range includes dividing the original dynamic range and the target dynamic range in to a plurality of corresponding sub-ranges and mapping each original sub-range to its corresponding target sub-range. One of the dynamic ranges is divided into a plurality of sub-ranges having equal size and the other dynamic range is divided into the corresponding sub-ranges each having a size based on a characteristic of the corresponding equal size sub-ranges. The invention may be employed in display, capture and image processing apparatus.

    摘要翻译: 将图像信号从原始动态范围转换为目标动态范围的方法包括将原始动态范围和目标动态范围划分为多个对应子范围,并将每个原始子范围映射到其相应的目标子范围, 范围。 其中一个动态范围被划分为具有相同大小的多个子范围,另一个动态范围被划分成各自具有基于对应的相等尺寸子范围的特征的尺寸的相应子范围。 本发明可以用于显示,捕获和图像处理装置。

    Chair
    6.
    外观设计
    Chair 有权

    公开(公告)号:USD771964S1

    公开(公告)日:2016-11-22

    申请号:US29533160

    申请日:2015-07-15

    申请人: Min Chen

    设计人: Min Chen

    Temperature compensation of output diode in an isolated flyback converter
    7.
    发明授权
    Temperature compensation of output diode in an isolated flyback converter 有权
    隔离反激式转换器中输出二极管的温度补偿

    公开(公告)号:US09019727B2

    公开(公告)日:2015-04-28

    申请号:US13552360

    申请日:2012-07-18

    IPC分类号: H02M3/335 H02M3/156

    CPC分类号: H02M3/156 H02M3/335

    摘要: An isolated flyback converter having temperature compensation (TC) uses primary side sensing and an output diode, the output diode having a variable voltage drop related to its temperature. A feedback voltage VFB, proportional to the output voltage VOUT, in a feedback loop is compared to a fixed reference voltage VREF for setting a duty cycle of a power switch, wherein VFB is caused to approximately equal VREF. A TC circuit has a voltage source configured to generate a proportional-to-absolute-temperature voltage VPTAT, wherein VPTAT is at approximately VREF at a calibration temperature T0 and rises as a temperature exceeds T0. The voltage source is connected to the VFB node via a TC resistor RTC, so that at T0 no current flows through RTC. Therefore, the selection of the optimal RTC does not affect the selection of a scaling resistance for generating VFB. The current through RTC at elevated temperatures compensates VOUT.

    摘要翻译: 具有温度补偿(TC)的隔离反激式转换器使用初级侧感测和输出二极管,输出二极管具有与其温度相关的可变电压降。 将与反馈回路中的输出电压VOUT成比例的反馈电压VFB与用于设定电源开关的占空比的固定参考电压VREF进行比较,其中使VFB大致相等于VREF。 TC电路具有被配置为产生比例绝对温度电压VPTAT的电压源,其中VPTAT在校准温度T0处大约为VREF,并且随着温度超过T0而升高。 电压源通过TC电阻RTC连接到VFB节点,使得在T0,没有电流流经RTC。 因此,最优RTC的选择不会影响生成VFB的缩放电阻的选择。 在高温下通过RTC的电流补偿了VOUT。

    Adaptive track follow control
    8.
    发明授权
    Adaptive track follow control 有权
    自适应跟踪控制

    公开(公告)号:US08896955B1

    公开(公告)日:2014-11-25

    申请号:US13162095

    申请日:2011-06-16

    IPC分类号: G11B5/596

    CPC分类号: G11B5/59622 G11B5/59694

    摘要: A disk drive comprises a track follow control system having a plurality of selectable frequency modes, the track follow control system configured to receive a position error signal and to output a control signal based on the position error signal, wherein the control signal is used by a head assembly to position a head over a disk. The disk drive also comprises a state estimator configured to receive the control signal and a position signal indicating a position of the head, to estimate a disturbance based on the control signal and the position signal, and to output an estimated disturbance signal based on the estimated disturbance. The disk drive further comprises a disturbance evaluator configured to receive the estimated disturbance signal, and to select one of the frequency modes of the track follow control system based on the estimated disturbance signal.

    摘要翻译: 磁盘驱动器包括具有多个可选频率模式的轨道跟随控制系统,轨道跟随控制系统被配置为接收位置误差信号并基于位置误差信号输出控制信号,其中控制信号由 头部组件以将磁头定位在磁盘上。 磁盘驱动器还包括状态估计器,其被配置为接收控制信号和指示头部的位置的位置信号,以基于控制信号和位置信号来估计干扰,并且基于所估计的干扰信号来输出估计的干扰信号 骚乱。 磁盘驱动器还包括被配置为接收所估计的干扰信号的干扰评估器,并且基于估计的干扰信号选择轨道跟随控制系统的频率模式之一。

    LED lighting device with high color rendering index
    9.
    发明申请
    LED lighting device with high color rendering index 审中-公开
    LED照明装置具有高显色指数

    公开(公告)号:US20130329418A1

    公开(公告)日:2013-12-12

    申请号:US13492866

    申请日:2012-06-10

    IPC分类号: F21V9/10

    摘要: An LED (light emitting diode) lighting device with high color rendering index includes a plurality of LED luminous units, wherein one of the LED luminous units has (u′, v′) chromaticity coordinates defined on a 1976CIE chromaticity diagram, a distance between every two coordinate points is not less than 0.01, a distance between at least one of the coordinate points and any other coordinate point is not less than 0.1, and coordinates of at least one of the coordinate points meet a condition that 0.10≦u′≦0.45 and 0.30≦v′≦0.50. By selecting a variety of LEDs within a certain spectral range to mix light, the color rendering index of the LED lighting device with high color rendering index of the present invention can be improved, and simultaneously the cost of the light source can be controlled.

    摘要翻译: 具有高显色指数的LED(发光二极管)照明装置包括多个LED发光单元,其中一个LED发光单元具有在1976CIE色度图上定义的(u',v')色度坐标,每个 两个坐标点不小于0.01,坐标点和任何其他坐标点中的至少一个之间的距离不小于0.1,并且至少一个坐标点的坐标满足0.10≤u≤0.45 和0.30 @ v'@ 0.50。 通过选择特定光谱范围内的各种LED来混合光,可以提高本发明的高显色指数的LED照明装置的显色指数,同时可以控制光源的成本。