公开(公告)号：US20110210912A1

公开(公告)日：2011-09-01

申请号：US13128494

申请日：2009-11-10

申请人： Keith Noel Jenkins ,  Gary Bryan Wordsworth

发明人： Keith Noel Jenkins ,  Gary Bryan Wordsworth

IPC分类号： G09G3/36

CPC分类号： G09G3/3426 ,  G09G2320/0247 ,  G09G2320/064 ,  G09G2330/06

摘要： The brightness of a LCD backlight, comprising a plurality of LEDs or LED chains (221—1 to 221—n), is controlled by a processor (203) for calculating the number of LEDs of a plurality of LEDs to be illuminated for a determined brightness and selecting the calculated number of LEDs or LED chains to form a spatial distribution pattern; and drivers (219—1 to 219—n) for illuminating the calculated number of LEDs in a random or pseudo-random sequence.

摘要翻译： 包括多个LED或LED链（221-1至221-n）的LCD背光的亮度由处理器（203）控制，用于计算待确定的多个待照亮的LED的LED数量 亮度并选择计算出的LED或LED链的数量以形成空间分布图; 以及用于以随机或伪随机序列照亮计算出的LED数量的驱动器（219-1至219-n）。

公开(公告)号：US06342850B1

公开(公告)日：2002-01-29

申请号：US09660180

申请日：2000-09-12

申请人： Timothy John Borer ,  Gary Bryan Wordsworth ,  David Christopher Clarkson

发明人： Timothy John Borer ,  Gary Bryan Wordsworth ,  David Christopher Clarkson

IPC分类号： H03M112

CPC分类号： H03M1/14

摘要： A high speed analog-to-digital converter utilizes a fine resolution ADC to digitize the low band component of an analog video signal to produce a fine resolution signal and a coarse resolution ADC to digitize the full spectrum of the analog signal and produce a coarse resolution signal. The coarse resolution signal is subtracted from the fine resolution signal to generate a summed signal containing a quantization error, which is filtered through a low pass digital filter to filter out the high band component and pass the quantization error. The filter output is summed with the coarse resolution signal to restore the fine resolution of the low band, producing a digital output signal that has a resolution suitable for high definition applications.

摘要翻译： 高速模数转换器利用精细分辨率ADC对模拟视频信号的低频带分量进行数字化，以产生精细分辨率信号和粗分辨率ADC，以对模拟信号的全谱进行数字化，并产生粗分辨率 信号。 从精细分辨率信号中减去粗分辨率信号以产生包含量化误差的加和信号，该量化误差通过低通数字滤波器滤波以滤除高频带分量并传递量化误差。 滤波器输出与粗分辨率信号相加，以恢复低频段的精细分辨率，产生具有适用于高清晰度应用的分辨率的数字输出信号。

公开(公告)号：US5818518A

公开(公告)日：1998-10-06

申请号：US724001

申请日：1996-09-30

申请人： Gary Bryan Wordsworth ,  Stephen Sherlock ,  David Christopher Kneller ,  David Llyod Schnuelle

发明人： Gary Bryan Wordsworth ,  Stephen Sherlock ,  David Christopher Kneller ,  David Llyod Schnuelle

IPC分类号： H04N5/253 ,  H04N5/257 ,  H04N7/01 ,  H04N3/36 ,  H04N3/38 ,  H04N3/40

CPC分类号： H04N7/0112 ,  H04N5/257

摘要： An apparatus for use in a method for scanning an image on a film and generating a video signal therefrom. The apparatus having a signal processor (10) receiving a plurality of input raster lines representing a film image, and a control unit (11) having controls (14) operating on said signal processor, whereby the number of the input raster lines used by the signal processor in the active raster to generate said output signal is variable. A signal representing a sequentially scanned image is supplied to filter (12) which performs an anti-aliasing and a decimation process. The amount of oversampling can be varied depending on various factors, such as film speed, and degree of anti-aliasing and aperture correction so as to optimize performance and, in CRT-based systems so as to maintain the size of the raster on the face of the CRT above a predetermined minimum.

摘要翻译： 一种用于在胶片上扫描图像并从中产生视频信号的方法中使用的装置。 该装置具有接收表示胶片图像的多个输入光栅线的信号处理器（10），以及具有在所述信号处理器上操作的控制（14）的控制单元（11），由此，由 信号处理器在有源光栅中生成所述输出信号是可变的。 表示顺序扫描图像的信号被提供给执行抗混叠和抽取处理的滤波器（12）。 过采样的量可以根据各种因素而变化，例如胶片速度，抗锯齿和孔径校正程度，以便优化性能，并且在基于CRT的系统中，以便保持面部光栅的尺寸 的CRT超过预定的最小值。