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公开(公告)号：US08026953B2
公开(公告)日：2011-09-27
申请号：US11568713
申请日：2005-05-04
申请人： Matheus Johannus Gerardus Lammers , Petrus Maria De Greef , Wei Pien Lee , Erik Boudewijn Van Der Tol , Michiel Adriaanszoon Klompenhouwer , Erno Hermanus Antonius Langendijk
发明人： Matheus Johannus Gerardus Lammers , Petrus Maria De Greef , Wei Pien Lee , Erik Boudewijn Van Der Tol , Michiel Adriaanszoon Klompenhouwer , Erno Hermanus Antonius Langendijk
CPC分类号： H04N9/67 , H04N1/6058
摘要： A method for processing color image data that enables to optimally render a color image on a target device. The method incorporates a color gamut mapping step, where the amount of gamut mapping is adapted dynamically, in dependence of at least a color saturation value of the input pixel. Preferably, also a luminance value of the input pixel is used. The adaptive gamut mapping incorporates correction of saturation, and preferably also hue and white point, of the image data. The color gamut of the target device is used to the fullest possible extent, while clipping and loss of local details in highly saturated areas of the input image is largely prevented.
摘要翻译： 一种用于处理能够在目标设备上最佳地呈现彩色图像的彩色图像数据的方法。 该方法包括色域映射步骤，其中根据至少输入像素的色彩饱和度值动态地适配色域映射的量。 优选地，还使用输入像素的亮度值。 自适应色域映射包括图像数据的饱和度校正，并且优选地还包括色相和白点。 目标设备的色域被尽可能多地使用，同时在输入图像的高度饱和区域中限制和丢失局部细节被大大地防止。
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公开(公告)号：US20110156593A1
公开(公告)日：2011-06-30
申请号：US12647242
申请日：2009-12-24
IPC分类号： H05B37/02
CPC分类号： H05B33/0854 , H05B33/0848
摘要： Various embodiments relate to an light-emitting diode (LED) driver and related method that drives various LEDs in an LED string beyond their isolated nominal luminance. Individual LEDs in an LED string may be thermally dependent so that specific LEDs may operate at higher temperatures without degradation. This may include driving specific LEDs beyond isolated nominal luminance when associated LEDs dim below their isolated nominal luminance. Such operation allows the LED to receive higher amounts of current and therefore exhibit higher luminous intensity. A control circuit may monitor the forward voltage and temperature in a feedback loop to ensure that the LEDs in the string are operating below a defined maximum junction temperature. The control circuit may signal a processing unit to adjust adjacent circuits to compensate when the controlled LEDs cannot produce a requested luminance without operating beyond a maximum junction temperature.
摘要翻译： 各种实施例涉及一种驱动LED串中的各种LED超出其隔离标称亮度的发光二极管（LED）驱动器及其相关方法。 LED串中的单个LED可以是热依赖性的，使得特定LED可以在较高温度下操作而不降解。 这可能包括当相关LED低于其隔离的标称亮度时将特定LED驱动超过隔离的标称亮度。 这样的操作允许LED接收更大量的电流并因此表现出更高的发光强度。 控制电路可以监视反馈回路中的正向电压和温度，以确保串中的LED工作在规定的最大结温以下。 控制电路可以发信号通知处理单元以调整相邻电路，以便在受控LED不能产生超出最大结温度的情况下产生所请求的亮度时进行补偿。
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公开(公告)号：US08193741B2
公开(公告)日：2012-06-05
申请号：US12647242
申请日：2009-12-24
IPC分类号： G05F1/00
CPC分类号： H05B33/0854 , H05B33/0848
摘要： Various embodiments relate to an light-emitting diode (LED) driver and related method that drives various LEDs in an LED string beyond their isolated nominal luminance. Individual LEDs in an LED string may be thermally dependent so that specific LEDs may operate at higher temperatures without degradation. This may include driving specific LEDs beyond isolated nominal luminance when associated LEDs dim below their isolated nominal luminance. Such operation allows the LED to receive higher amounts of current and therefore exhibit higher luminous intensity. A control circuit may monitor the forward voltage and temperature in a feedback loop to ensure that the LEDs in the string are operating below a defined maximum junction temperature. The control circuit may signal a processing unit to adjust adjacent circuits to compensate when the controlled LEDs cannot produce a requested luminance without operating beyond a maximum junction temperature.
摘要翻译： 各种实施例涉及一种驱动LED串中的各种LED超出其隔离标称亮度的发光二极管（LED）驱动器及其相关方法。 LED串中的单个LED可以是热依赖性的，使得特定LED可以在较高温度下操作而不降解。 这可能包括当相关LED低于其隔离的标称亮度时将特定LED驱动超过隔离的标称亮度。 这样的操作允许LED接收更大量的电流并因此表现出更高的发光强度。 控制电路可以监视反馈回路中的正向电压和温度，以确保串中的LED工作在规定的最大结温以下。 控制电路可以发信号通知处理单元以调整相邻电路，以便在受控LED不能产生超出最大结温度的情况下产生所请求的亮度时进行补偿。
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公开(公告)号：US07701450B2
公开(公告)日：2010-04-20
申请号：US10533019
申请日：2003-10-22
IPC分类号： G06F3/038
CPC分类号： G09G3/2018 , G09G3/2014 , G09G3/2077 , G09G2320/0247
摘要： A method of scanning lines in a display, a device for scanning lines and a portable electronic device including such a device scan lines consecutively for a set of scanning cycles and vary the selection of subfield from line to line in each scanning cycle such that subfields are selected in a consecutive order from line to line, no two consecutive line scans use the same subfield and no line is scanned using the same subfield twice during the set of scanning cycles.
摘要翻译： 一种在显示器中扫描线的方法，用于扫描线的装置和包括这种装置扫描线的便携式电子装置，其连续地用于一组扫描周期，并且在每个扫描周期中改变从一行到另一条线的子场的选择，使得子场是 以连续的顺序从一行到另一行选择，没有两个连续的行扫描使用相同的子字段，并且在扫描周期集合期间不使用相同的子字段扫描两行。
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公开(公告)号：US08723778B2
公开(公告)日：2014-05-13
申请号：US11576684
申请日：2005-09-27
IPC分类号： G09G3/36
CPC分类号： G09G3/3611 , G09G2310/06 , G09G2320/0252 , G09G2320/0261 , G09G2340/16
摘要： The invention relates to a display driver comprising an embedded frame memory and an overdrive logic block for moderating display data of a current frame received by the display driver by means of overdrive. The overdrive logic block is arranged for reading data from and writing data to the embedded frame memory and for using display data of a previous image stored in the embedded frame memory for calculating overdrive display data of the current frame. The overdrive display data is used for refreshing the image depicted on a display device. The invention further relates to an LCD display device comprising such a display device.
摘要翻译： 本发明涉及一种显示驱动器，其包括嵌入式帧存储器和过驱动逻辑块，用于通过超速驱动来调节由显示驱动器接收的当前帧的显示数据。 过驱动逻辑块被配置为从嵌入式帧存储器读取数据并向数据写入数据，并且使用存储在嵌入式帧存储器中的先前图像的显示数据来计算当前帧的过驱动显示数据。 超速显示数据用于刷新显示设备上所描绘的图像。 本发明还涉及一种包括这种显示装置的LCD显示装置。
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公开(公告)号：US08466924B2
公开(公告)日：2013-06-18
申请号：US10587604
申请日：2005-01-20
IPC分类号： G06F13/372
CPC分类号： G09G5/395 , G09G5/393 , G09G2320/0261
摘要： A display method comprises the steps of generating (1) images comprising source data (SDA) and source frame synchronization instants (SSI) having a source frame rate (SFR). The source data (SDA) is stored (2) in a frame memory (5) under control of a first address pointer (AP I) having a start address (DSA) being determined by the source frame synchronization instants (SSI). During a read period (RP), display data (DDA) is read (2) from the memory (5) under control of a second address pointer (AP2) having a start address (SSA) being determined by display frame synchronization instants (DSI) having a display frame rate (DFR). The display data (DDA) is displayed (3) on a matrix display (4). The source frame rate (SIR) or the display frame rate (DFR) is controlled (2) to obtain, in a stable situation, the first address pointer (AP I) and the second address pointer (AP2) starting with an offset in time (TO) which has a fixed polarity during the read period (RP).
摘要翻译： 显示方法包括以下步骤：产生（1）包含源数据（SDA）和源帧速率（SFR）的源帧同步时刻（SSI）的图像。 在由源帧同步时刻（SSI）确定起始地址（DSA）的第一地址指针（AP I）的控制下，源数据（SDA）被存储在帧存储器（5）中。 在读取周期（RP）期间，在具有由显示帧同步时刻（DSI）确定的起始地址（SSA）的第二地址指针（AP2）的控制下，从存储器（5）读取（2）显示数据（DDA） ）具有显示帧速率（DFR）。 在矩阵显示（4）上显示显示数据（DDA）（3）。 控制源帧速率（SIR）或显示帧速率（DFR）（2）以在稳定的情况下获得以时间偏移开始的第一地址指针（AP I）和第二地址指针（AP2） （TO）在读取周期（RP）期间具有固定的极性。
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公开(公告)号：US20080259059A1
公开(公告)日：2008-10-23
申请号：US11576684
申请日：2005-09-27
CPC分类号： G09G3/3611 , G09G2310/06 , G09G2320/0252 , G09G2320/0261 , G09G2340/16
摘要： The invention relates to a display driver comprising an embedded frame memory and an overdrive logic block for moderating display data of a current frame received by the display driver by means of overdrive. The overdrive logic block is arranged for reading data from and writing data to the embedded frame memory and for using display data of a previous image stored in the embedded frame memory for calculating overdrive display data of the current frame. The overdrive display data is used for refreshing the image depicted on a display device. The invention further relates to an LCD display device comprising such a display device.
摘要翻译： 本发明涉及一种显示驱动器，其包括嵌入式帧存储器和过驱动逻辑块，用于通过超速驱动来调节由显示驱动器接收的当前帧的显示数据。 过驱动逻辑块被配置为从嵌入式帧存储器读取数据并向数据写入数据，并且使用存储在嵌入式帧存储器中的先前图像的显示数据来计算当前帧的过驱动显示数据。 超速显示数据用于刷新显示设备上所描绘的图像。 本发明还涉及一种包括这种显示装置的LCD显示装置。
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公开(公告)号：US20150029236A1
公开(公告)日：2015-01-29
申请号：US14360878
申请日：2012-10-17
IPC分类号： G09G3/34
CPC分类号： G09G3/3406 , G09G3/36 , G09G2310/024 , G09G2320/0209 , G09G2320/0252 , G09G2320/041 , H04N13/341 , H04N13/398
摘要： A display driver drives a display (101) having a backlight (105) and a transmittance panel (107) comprising transmittance elements modulating the light from the backlight (105). The driver receives time sequential frames to be displayed. A controller (115) generates backlight intensity values for the backlight and transmittance drive values for the transmittance elements for the time sequential frames in response to image data for the time sequential frames and a global relationship between image data values and backlight intensity values and transmittance drive values. The transmittance drive values comprise a desired transmittance component and an overdrive component. A compensator (117) introduces a locally adapted overdrive compensation value to the transmittance drive values to generate compensated transmittance drive values and the backlight (105) is driven accordance with the backlight intensity values and the transmittance panel (107) is driven in accordance with the compensated transmittance drives values. The adaption may e.g. be for temperature variations or timing variations.
摘要翻译： 显示驱动器驱动具有背光源（105）和透射面板（107）的显示器（101），透射面板（107）包括调制来自背光源（105）的光的透射率元件。 驱动程序接收要显示的时间顺序帧。 控制器（115）响应于时间帧的图像数据和图像数据值与背光强度值和透射率驱动之间的全局关系，生成用于背光的背光强度值和用于时间顺序帧的透射率元件的透射率驱动值 价值观。 透射率驱动值包括期望的透射率分量和过驱动分量。 补偿器（117）对透射率驱动值引入局部适配的过驱动补偿值，以产生补偿的透射率驱动值，并且背光（105）根据背光强度值被驱动，并且透射面板（107）根据 补偿透射率驱动值。 适应可以例如。 用于温度变化或时序变化。
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公开(公告)号：US08537076B2
公开(公告)日：2013-09-17
申请号：US10524968
申请日：2003-07-24
IPC分类号： G09G3/28
CPC分类号： G09G3/2059 , G09G3/2022 , G09G3/2948 , G09G2320/0271 , G09G2320/0276 , H04N5/202 , H04N5/70 , H04N7/012
摘要： The invention relates to a video circuit (1) for processing video signals which show images on a display panel with linear light transition, comprising a gamma correction circuit (3), a quantizer (11) and a sub-field generator circuit (8). To save computing time, a random-access memory (7) replaces the quantizer (64).
摘要翻译： 本发明涉及一种用于处理视频信号的视频电路（1），该视频信号在线性光跃迁的显示面板上显示图像，包括伽马校正电路（3），量化器（11）和子场发生器电路（8） 。 为了节省计算时间，随机存取存储器（7）代替量化器（64）。
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10.发明授权Image processing method and apparatus adjusting image data in accordance with image data sub-pixels 有权图像处理方法和装置，根据图像数据子像素调整图像数据公开(公告)号：US07825942B2
公开(公告)日：2010-11-02
申请号：US11596332
申请日：2005-05-04
IPC分类号： G09G5/02
CPC分类号： G09G3/3406 , G09G3/3607 , G09G2320/0626 , G09G2320/0646 , G09G2330/021 , G09G2360/16
摘要： A method for processing a frame of image data, wherein the image data is amplified by a gain factor determined in dependence of a number of sub-pixels within said frame of image data having a luminance above a first threshold value. The resulting gain factor allows for optimal amplification of the image data without loss of local detail. This leads to a better perceived image quality. In a preferred embodiment, the gain factor is simultaneously used for reducing the backlight intensity in a backlit LCD device. Thereby, the perceived image quality is similar to that of the unprocessed image data, however the power consumption of the LCD backlight is reduced substantially.
摘要翻译： 一种用于处理图像数据帧的方法，其中所述图像数据被放大了根据所述图像数据帧内的子像素数目确定的增益因子，所述图像数据的亮度高于第一阈值。 所得到的增益因子允许图像数据的最佳放大而不损失局部细节。 这导致更好的感知图像质量。 在优选实施例中，增益因子同时用于降低背光LCD装置中的背光强度。 因此，所感知的图像质量与未处理的图像数据的图像质量相似，但是LCD背光的功耗大幅降低。
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