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1.发明申请Method and System for Backlight Control Using Statistical Attributes of Image Data Blocks 审中-公开使用图像数据块的统计属性进行背光控制的方法和系统公开(公告)号：US20120281028A1
公开(公告)日：2012-11-08
申请号：US13511534
申请日：2010-12-09
CPC分类号： G09G3/3426 , G09G2320/0261 , G09G2320/0646 , G09G2320/066 , G09G2330/021
摘要： A method and system for generating backlight control values for a dual modulation display including a front panel having a first resolution and a backlight subsystem having lower resolution than the front panel, in response to input image data. Some embodiments determine statistical data indicative of at least one statistical measure of each of a number of spatially compact subsets of pixels of image data having the first resolution, where the pixels of image data are pixels of the input image data, color components of pixels of the input image data, or data values derived from pixels of the input image data. Some embodiments determine backlight drive values for each color channel of the backlight subsystem, including by determining statistical data for each color channel, determining backlight drive values for each color channel from the statistical data, and performing cross-channel correction on these backlight drive values.
摘要翻译： 响应于输入图像数据，用于产生包括具有第一分辨率的前面板和具有比前面板更低分辨率的背光子系统的双调制显示器的背光控制值的方法和系统。 一些实施例确定指示具有第一分辨率的图像数据的多个空间紧凑的像素子集中的每一个的统计量数据，其中图像数据的像素是输入图像数据的像素，像素的颜色分量 输入图像数据或从输入图像数据的像素导出的数据值。 一些实施例确定背光子系统的每个颜色通道的背光驱动值，包括通过确定每个颜色通道的统计数据，根据统计数据确定每个颜色通道的背光驱动值，以及对这些背光驱动值执行跨通道校正。
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公开(公告)号：US5057911A
公开(公告)日：1991-10-15
申请号：US424829
申请日：1989-10-19
申请人： Kevin Stec , Jerome D. Shields
发明人： Kevin Stec , Jerome D. Shields
CPC分类号： H04N9/64 , H04N7/0102
摘要： A system converts digital video signals between two digital video signal formats. The system includes a rate converter which receives digital samples of the video signal in the first format and at the clock frequency thereof and converts those signls to digital samples of the video signal at the clock frequency of the second signal format. The outputs of the rate converter are combined with appropriate coefficients in a digital filter to produce alternately coefficient modified chorma and luminance signals which are combined in an output circuit to produce the digital video signal in the second video signal format.
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公开(公告)号：US5331346A
公开(公告)日：1994-07-19
申请号：US957721
申请日：1992-10-07
CPC分类号： H04N7/0102
摘要： A sample rate conversion system converts from an input sample rate stream having a predetermined input sample rate to an output sample stream having a predetermined output sample rate by interpolating output samples from the input samples using first and second approximate sample rate ratios. The system includes circuitry which selects a sequence of interpolation filters from among a set of filters, the sequences being defined by one of these approximate ratios, and circuitry which monitors the magnitude of the accumulated error introduced by the approximation. When this accumulated error becomes greater than a threshold, the system changes to use a further sequence of interpolation filters based on the other approximate ratio. The accumulated error changes in a positive sense with each successive sample while one of the two approximate ratios is used. The accumulated error changes in a negative sense with each successive sample while the other of the two approximate ratios is used. The system switches between these sample rate ratios to maintain the magnitude of the position error of the interpolated samples below a predetermined threshold value. A sample rate conversion system which converts a television signal in CCIR (601) format into a Phase Alternate Line (PAL) video signal is disclosed.
摘要翻译： 采样率转换系统通过使用第一和第二近似采样率比较从输入样本内插输出样本，将具有预定输入采样率的输入采样率流转换为具有预定输出采样率的输出采样流。 该系统包括从一组滤波器中选择一系列内插滤波器的电路，该序列由这些近似比率之一定义，以及监视由近似引入的累积误差幅度的电路。 当该累积误差变得大于阈值时，系统根据其他近似比率改变以使用另外的插值滤波器序列。 当使用两个近似比率之一时，每个连续样本的积累误差变化为正。 每个连续样本的累积误差变化为负值，而使用两个近似比率中的另一个。 系统在这些采样率之间切换，以将内插采样的位置误差的大小维持在预定阈值以下。 公开了一种将CCIR（601）格式的电视信号转换为相位交替（PAL）视频信号的采样率转换系统。
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4.发明授权Interpolation filter selection circuit for sample rate conversion using phase quantization 失效插值滤波器选择电路，采用相位量化进行采样率转换
公开(公告)号：US5613084A
公开(公告)日：1997-03-18
申请号：US317474
申请日：1994-10-04
申请人： Clarence J. Hau , Jerome D. Shields
发明人： Clarence J. Hau , Jerome D. Shields
CPC分类号： H03H17/0225 , H03H17/0294 , H03H17/0657 , H03H17/0664 , H04N7/0122 , H04N5/14
摘要： A filter selector generates a filter address value to select one of a number of frequency characteristics of a filter to resample a first data signal from a first segment of data in order to generate second sampled data signal in a second segment of data. The filter selector includes an adder which adds a resampling factor to a previous address value to generate a current address value if the previous address value is less than a comparator value and which subtracts the comparator value from the previous address value to generate the current address value if the previous address value is greater than or equal to the comparator value. The current address value is shifted by n bits, where n is an integer, to generate the filter address value.
摘要翻译： 滤波器选择器生成滤波器地址值以选择滤波器的多个频率特性之一，以从第一数据段重新采样第一数据信号，以便在第二数据段中生成第二采样数据信号。 滤波器选择器包括加法器，该加法器将先前地址值的重采样因子加到当前地址值小于比较器值时生成当前地址值，并从前一地址值中减去比较器值以产生当前地址值 如果先前的地址值大于或等于比较器值。 当前地址值移位n位，其中n是整数，以生成过滤器地址值。
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公开(公告)号：US08879631B2
公开(公告)日：2014-11-04
申请号：US12745501
申请日：2008-11-21
CPC分类号： G06T7/20 , G06T2207/30241
摘要： For a frame set of a moving image sequence, a motion estimate is accessed. The motion estimate describes a change to a region of a reference frame with respect to at least one other frame. The reference frame and the other frames are displaced from each other within the frame set from over a temporal window. The regions of the two frames contain at least a portion of an image feature. The motion estimate is smoothed over the temporal window. The smoothing may facilitate aligning, at least in part, the image feature within the set of frames.
摘要翻译： 对于运动图像序列的帧集合，访问运动估计。 运动估计描述相对于至少一个其他帧对参考帧的区域的改变。 参考帧和其他帧在帧集合内从时间窗口彼此移位。 两帧的区域包含图像特征的至少一部分。 运动估计在时间窗口上平滑。 该平滑可以促进至少部分地对齐该组帧内的图像特征。
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6.发明授权Apparatus for adjusting the timing of sampled data signals in a resampling system 失效用于在重采样系统中调整采样数据信号的定时的装置
公开(公告)号：US5268750A
公开(公告)日：1993-12-07
申请号：US861251
申请日：1992-03-31
摘要： A video signal processing system uses a sequence of interpolation filters to resample a 125M video signal to produce a 244M signal. In addition, the system allows an operator to specify a desired subcarrier-to-horizontal sync (SCH) phase and a desired horizontal position. The system automatically adjusts the starting point in the sequence of filters used for the resampling operation to implement each of the requested phase shifts.
摘要翻译： 视频信号处理系统使用内插滤波器序列来重新采样125M视频信号以产生244M信号。 另外，该系统允许操作者指定期望的子载波到水平同步（SCH）相位和期望的水平位置。 系统自动调整用于重采样操作的滤波器序列中的起始点，以实现每个所请求的相移。
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公开(公告)号：US4442465A
公开(公告)日：1984-04-10
申请号：US313314
申请日：1981-10-20
申请人： Lee V. Hedlund , Jerome D. Shields
发明人： Lee V. Hedlund , Jerome D. Shields
摘要： When tape in a VTR moves in the same direction as the direction of peripheral motion of a headwheel across which the tape passes, release of one end of the tape during rewind may cause the tape to whip around the headwheel and jam. The tape accumulation resulting from the motion is accommodated by a tapered open-ended tunnel. After accumulation in the tunnel, the tape is reeled in by the take-up reel.
摘要翻译： 当VTR中的磁带沿与磁带通过的头轮的周向运动方向相同的方向移动时，在倒带时释放磁带的一端可能会导致磁带甩在头轮周围并卡住。 由运动产生的磁带累积是通过锥形开口隧道来实现的。 在隧道中堆积之后，磁带被卷带卷轴卷入。
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