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21. 发明授权

US06806915B2 Method and apparatus for echo cancellation in digital communications using an echo cancellation reference signal 失效
标题翻译：使用回波消除参考信号的数字通信中的回波消除的方法和装置
公开(公告)号：US06806915B2
公开(公告)日：2004-10-19
申请号：US09848061
申请日：2001-05-03
申请人： David Koo
发明人： David Koo
IPC分类号： H04N521
CPC分类号： H04N5/211 , H04L25/03006 , H04L2025/03382 , H04L2025/03789
摘要： A novel echo cancellation reference (“ECR”) training signal is inserted into the current ATSC 8 VSB data stream to achieve improved echo rejection while maintaining compatibility with the ATSC 8 VSB digital ATV standard. The novel ECR training signal is also suitable for other multipath or dispersive digital communication channels. A pre-equalization subsystem is included in the digital ATV system as a front end to the VSB receiver, and is trained with preferably the novel ECR training signal. One type of pre-equalization subsystem provides a fully ATSC compliant signal at its output, and therefore is particularly useful with standard VSB receivers. Another type of pre-equalization system provides a signal at its output which is ATSC compliant in some respects but which retains the ECR signal, and therefore is particularly useful for signal relays, analysis purposes, and other applications in which the residual channel information is important.
摘要翻译：将新的回波消除参考（“ECR”）训练信号插入到当前ATSC 8 VSB数据流中，以实现改进的回波抑制，同时保持与ATSC 8 VSB数字ATV标准的兼容性。新颖的ECR训练信号也适用于其他多径或色散数字通信通道。预均衡子系统作为VSB接收机的前端包括在数字ATV系统中，并且优选地用新颖的ECR训练信号进行训练。一种类型的预均衡子系统在其输出端提供完全符合ATSC标准的信号，因此对标准VSB接收机特别有用。另一种类型的预均衡系统在其输出端提供信号，其在某些方面符合ATSC标准，但保留了ECR信号，因此特别适用于信号继电器，分析目的以及剩余信道信息重要的其他应用。

22. 发明授权

US06760078B2 Digital filtering of DTV I-F signal to avoid low-end boost of the baseband signal resulting from in-phase synchrodyne 有权
标题翻译：对DTV I-F信号进行数字滤波，以避免同相同步信号产生的基带信号的低端升压
公开(公告)号：US06760078B2
公开(公告)日：2004-07-06
申请号：US10428140
申请日：2003-05-02
申请人： Allen LeRoy Limberg
发明人： Allen LeRoy Limberg
IPC分类号： H04N521
CPC分类号： H04N5/4446 , H03J7/02 , H04N5/211 , H04N5/4401 , H04N5/455
摘要： In a radio receiver for digital television signals a digital filter supplies the in-phase synchrodyning circuitry a shaped spectral response to the digitized I-F signal. The amplitude-versus-frequency response of the digital filter rolls off through the carrier region, so that there is substantially no boost of the amplitudes of lower frequency components of the baseband symbol coding recovered by the in-phase synchrodyning circuitry, with respect to the amplitudes of higher frequency components of the baseband symbol coding such circuitry recovers. When the DTV receiver is initially tuned to a channel, the adaptation of the adaptive channel equalizer proceeds without having initially to compensate for the low-end boost.
摘要翻译：在用于数字电视信号的无线电接收机中，数字滤波器向同步同步电路提供对数字化I-F信号的形状光谱响应。数字滤波器的幅度 - 频率响应通过载波区域滚降，使得基本上没有由同相同步振荡电路恢复的基带符号编码的较低频率分量振幅的升高，相对于这种电路的基带符号编码的较高频率分量的振幅恢复。当DTV接收机最初被调谐到一个信道时，自适应信道均衡器的自适应进行而不用初始地补偿低端增益。

23. 发明授权

US06710818B1 ILLUMINATION FLICKER DETECTION APPARATUS, AN ILLUMINATION FLICKER COMPENSATION APPARATUS, AND AN AC LINE FREQUENCY DETECTION APPARATUS, METHODS OF DETECTING ILLUMINATION FLICKER, COMPENSATING ILLUMINATION FLICKER, AND MEASURING AC LINE FREQUENCY 失效
标题翻译：照明闪光灯检测装置，照明闪光灯补偿装置和交流线路频率检测装置，检测照明闪光灯的方法，补偿照明闪光灯和测量交流线频率
公开(公告)号：US06710818B1
公开(公告)日：2004-03-23
申请号：US09680216
申请日：2000-10-06
申请人： Misa Kasahara , Kenji Tabei , Makoto Sube
发明人： Misa Kasahara , Kenji Tabei , Makoto Sube
IPC分类号： H04N521
CPC分类号： H04N5/2357 , H04N5/235
摘要： A video signal including illumination flicker component is integrated at each of unit areas (horizontal lines) in a frame (field) of the video signal. The integrated level at each of the unit areas at the frame and the integrated level at the corresponding unit area of an adjacent frame are averaged. Dividing is effected between results of the averaging and integrating every unit area. It is judged whether flicker exists in the video signal by frequency-analyzing results of the dividing result at the unit areas. The unit area may be plural adjacent lines where flickering are negligible. The averaging circuit may be circulation type of or FIR filter. Threshold level for judging the flicker is changed according to a shutter speed control signal. Flicker compensation may be executed by controlling shutter speed or the AGC according to flicker judging result. A still condition at a block in a frame may be detected from the integration result at plural frames. When the block is judged to be still, the flicker is judged. An ac line frequency detection is also disclosed to detect the frequency of the ac line from a video signal generated under illumination including flicker. An imaging circuit may be provided to generate the video signal therein.
摘要翻译：包括照明闪烁分量的视频信号被集成在视频信号的帧（场）中的每个单位区域（水平行）处。在帧的每个单位区域和相邻帧的相应单位区域处的积分水平的积分水平被平均。在每个单位面积的平均和积分结果之间进行分割。通过频率分析在单位区域的分割结果的结果来判断视频信号中是否存在闪烁。单位面积可以是多个相邻的线，其中闪烁是可忽略的。平均电路可以是循环型或FIR滤波器。用于判断闪烁的阈值水平根据快门速度控制信号而改变。可以通过根据闪烁判断结果控制快门速度或AGC来执行闪烁补偿。可以从多个帧的积分结果检测帧中的块处的静止条件。当判断为静止时，判断闪烁。还公开了一种交流线路频率检测，以从包括闪烁在内的照明下产生的视频信号检测交流线路的频率。可以提供成像电路以在其中产生视频信号。

24. 发明授权

US06657677B1 Method and apparatus for improving conversion from SD to HDTV 有权
标题翻译：改善从SD到HDTV的转换的方法和装置
公开(公告)号：US06657677B1
公开(公告)日：2003-12-02
申请号：US09639155
申请日：2000-08-16
申请人： Haiyan He , Johan Gerard Willem Maria Janssen
发明人： Haiyan He , Johan Gerard Willem Maria Janssen
IPC分类号： H04N521
CPC分类号： G06T5/002 , G06T3/4053 , G06T5/003 , G06T7/13 , G06T2200/12 , G06T2207/10016 , G06T2207/20012 , G06T2207/20192
摘要： Image enhancement is achieved by a combination of linear and non-linear techniques. The linear technique is preferably peaking, while the non-linear techniques is preferably LTI. The peaking is applied to non-edge areas of the image. The LTI is applied to edge areas of the image. LTI is of the sub-pixel variety. The image enhancement device is preferably part of a device for converting standard definition to high definition signals.
摘要翻译：图像增强通过线性和非线性技术的组合实现。线性技术优选为峰值，而非线性技术优选为LTI。峰值应用于图像的非边缘区域。 LTI应用于图像的边缘区域。 LTI是子像素品种。图像增强装置优选地是用于将标准清晰度转换为高清晰度信号的装置的一部分。

25. 发明授权

US06606129B1 Digital filtering of DTV I-F signal to avoid low-end boost of the baseband signal resulting from in-phase synchrodyne 有权
标题翻译：对DTV I-F信号进行数字滤波，以避免同相同步信号产生的基带信号的低端升压
公开(公告)号：US06606129B1
公开(公告)日：2003-08-12
申请号：US09431272
申请日：1999-11-01
申请人： Allen LeRoy Limberg
发明人： Allen LeRoy Limberg
IPC分类号： H04N521
CPC分类号： H04N5/4446 , H03J7/02 , H04N5/211 , H04N5/4401 , H04N5/455
摘要： In a radio receiver for digital television signals a digital filter supplies the in-phase synchrodyning circuitry a shaped spectral response to the digitized I-F signal. The amplitude-versus-frequency response of the digital filter rolls off through the carrier region, so that there is substantially no boost of the amplitudes of lower frequency components of the baseband symbol coding recovered by the in-phase synchrodyning circuitry, with respect to the amplitudes of higher frequency components of the baseband symbol coding such circuitry recovers. When the DTV receiver is initially tuned to a channel, the adaptation of the adaptive channel equalizer proceeds without having initially to compensate for the low-end boost.
摘要翻译：在用于数字电视信号的无线电接收机中，数字滤波器向同步同步电路提供对数字化I-F信号的形状光谱响应。数字滤波器的幅度 - 频率响应通过载波区域滚降，使得基本上没有由同相同步振荡电路恢复的基带符号编码的较低频率分量振幅的升高，相对于这种电路的基带符号编码的较高频率分量的振幅恢复。当DTV接收机最初被调谐到一个信道时，自适应信道均衡器的自适应进行而不用初始地补偿低端增益。

26. 发明授权

US06600518B1 Adaptive clipping prevention for picture sharpness enhancement 有权
标题翻译：自适应剪辑防止图像锐度增强
公开(公告)号：US06600518B1
公开(公告)日：2003-07-29
申请号：US09706669
申请日：2000-11-06
申请人： Michael Bakhmutsky , Johan G. Janssen , Egbert G. T. Jaspers
发明人： Michael Bakhmutsky , Johan G. Janssen , Egbert G. T. Jaspers
IPC分类号： H04N521
CPC分类号： H04N5/208
摘要： A contrast control and clipping device is configured to determine a maximum range of enhancement that may be applied to each pixel for picture sharpness enhancement. This maximum range is used to limit the enhancement that is determined by the conventional convolution kernel and gain control modules. Preferably, the maximum range is independent of the determined convolution value, thereby minimizing the bandwidth requirements among the modules used for picture sharpness enhancement. The reduced bandwidth requirement allows for an efficient partitioning of tasks between hardware and software embodiments, and eases the overall system design task. In a multi-media application, the amount of data that is transferred between the processor and sub-components is substantially reduced, and the efficient partitioning facilitates parallel processing. The maximum range of enhancement is determined based on the pixel values in the current field, using a computationally simple algorithm, thereby minimizing anomalies caused by temporal dependencies among the modules that are used for picture sharpness enhancement. Additionally, the sharpness enhancement is dynamically adjusted based on overall picture-level characteristics, including the average enhancement range, overall noise measures, and so on.
摘要翻译：对比度控制和剪辑装置被配置为确定可以应用于每个像素的图像锐度增强的最大增强范围。该最大范围用于限制由常规卷积核和增益控制模块确定的增强。优选地，最大范围与确定的卷积值无关，从而最小化用于图像锐度增强的模块之间的带宽要求。减少的带宽要求允许在硬件和软件实施例之间有效地划分任务，并且简化整个系统设计任务。在多媒体应用中，在处理器和子组件之间传送的数据量大大减少，有效分区便于并行处理。使用计算简单的算法，基于当前场中的像素值来确定增强的最大范围，从而最小化用于图像锐度增强的模块之间由时间依赖性引起的异常。另外，锐度增强是基于整体图像级特性进行动态调整的，包括平均增强范围，整体噪声测量等。

27. 发明授权

US06591398B1 Multiple processing system 失效
标题翻译：多处理系统
公开(公告)号：US06591398B1
公开(公告)日：2003-07-08
申请号：US09249493
申请日：1999-02-12
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Sugata Ghosal , James J. Carrig , Tsutomu Watanabe
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Sugata Ghosal , James J. Carrig , Tsutomu Watanabe
IPC分类号： H04N521
CPC分类号： H04N19/59 , H04N19/105 , H04N19/112 , H04N19/117 , H04N19/137 , H04N19/51 , H04N19/80 , H04N19/895
摘要： An apparatus, method, and computer-readable medium for selectively performing, in parallel structures, different functions on an input image, sound data or other correlated data. An input is configured to receive the input data. There are at least two circuits, each circuit is coupled to the input and each circuit is configured to perform a different function on the input data. A motion-detection circuit is coupled to the input and each of the at least two circuits. The motion-detection circuit is configured to determine a level of change in the input data and generate an output of motion data. The motion data is used by each of the at least two circuits to perform its corresponding function. A select device is coupled to each of the at least two circuits and a control input. The select device is configured to select as output data, the output of one of the at least two circuits based upon the control input. The different functions performed on the input data may be selected from the group consisting of recovering erroneous data contained in the input data, interpolating the input data, and reducing the noise level of the input data.
摘要翻译：一种用于在并行结构中选择性地执行输入图像，声音数据或其他相关数据上的不同功能的装置，方法和计算机可读介质。输入被配置为接收输入数据。存在至少两个电路，每个电路耦合到输入，并且每个电路被配置为对输入数据执行不同的功能。运动检测电路耦合到至少两个电路的输入端和每一个电路。运动检测电路被配置为确定输入数据的变化水平并产生运动数据的输出。所述运动数据由所述至少两个电路中的每一个使用以执行其对应的功能。选择装置耦合到所述至少两个电路中的每一个和控制输入。所述选择装置被配置为基于所述控制输入来选择所述至少两个电路中的一个的输出数据作为输出数据。可以从包括输入数据中包含的错误数据，内插输入数据以及降低输入数据的噪声电平的组中选择对输入数据执行的不同功能。

28. 发明授权

US06519010B2 Broadcast transmission system with sampling and correction arrangement for correcting distortion caused by amplifying and signal conditioning components 有权
标题翻译：具有采样和校正装置的广播传输系统，用于校正由放大和信号调理部件引起的失真
公开(公告)号：US06519010B2
公开(公告)日：2003-02-11
申请号：US09905560
申请日：2001-07-13
申请人： Edwin Ray Twitchell , Wayne D. Duello , Robert J. Plonka
发明人： Edwin Ray Twitchell , Wayne D. Duello , Robert J. Plonka
IPC分类号： H04N521
CPC分类号： H03F1/3294 , H03F1/3247 , H03F2200/57 , H03F2201/3233 , H04L27/368
摘要： A transmission system (14) broadcasts a signal. Within the system (14), a power amplifier (20) causes non-linear distortion. A pre-amp component, such as a band-pass filter (32), causes linear distortion. A high power filter (38) is located downstream of the power amplifier (20) and causes linear distortion. A linear equalizer (42) compensates for the distortion caused by the high power filter (38). A non-linear corrector (44) compensates for the distortion caused by the power amplifier (20), and is located downstream of the linear equalizer (42). A linear equalizer (46) compensates for the distortion caused by the pre-amp components (e.g., 32). The compensating components (42-46) are located upstream of the distorting, pre-amp component (e.g., 32). Signal sampling points (70-74) are located downstream of each distorting component (20, 32, and 38). Sampling selectively occurs at one of the sample points (70-74) for use to update compensation.
摘要翻译：传输系统（14）广播信号。在系统（14）内，功率放大器（20）引起非线性失真。诸如带通滤波器（32）的前置放大器组件引起线性失真。高功率滤波器（38）位于功率放大器（20）的下游并引起线性失真。线性均衡器（42）补偿由高功率滤波器（38）引起的失真。非线性校正器（44）补偿由功率放大器（20）引起的失真，并且位于线性均衡器（42）的下游。线性均衡器（46）补偿由前置放大器部件（例如，32）引起的失真。补偿部件（42-46）位于变形的前置放大器部件（例如32）的上游。信号采样点（70-74）位于每个失真部件（20,32和38）的下游。在一个采样点（70-74）选择性地进行采样，用于更新补偿。

29. 发明授权

US06509936B1 Cathode ray tube with magnetic coil for display enhancement 失效
标题翻译：具有电磁线圈的阴极射线管用于显示增强
公开(公告)号：US06509936B1
公开(公告)日：2003-01-21
申请号：US08742076
申请日：1996-11-01
申请人： Matthew Scott Brennesholtz
发明人： Matthew Scott Brennesholtz
IPC分类号： H04N521
CPC分类号： H01J29/705 , H01J2229/568 , H01J2229/703
摘要： A method and projection television system for projecting images having a plurality of color components, includes a device for filtering a first color component signal from a composite signal to provide a filtered first color component signal. A defocusing mechanism defocuses the first color component signal based on the filtered first color component signal. A gain adjustment device adjusts a gain of at least one other of a plurality of color component signals of the composite signal. An amount of defocusing performed by the defocusing mechanism and a gain adjustment by the gain adjustment device are dependent on a content of the composite signal. In another aspect of the invention, a spot wobble scheme may be employed alone in a static defocussing system, without dependence upon the video signal content.
摘要翻译：一种用于投影具有多个颜色分量的图像的方法和投影电视系统，包括用于从复合信号中滤出第一颜色分量信号以提供经滤波的第一颜色分量信号的装置。散焦机构基于经滤波的第一颜色分量信号使第一颜色分量信号散焦。增益调整装置调整复合信号的多个颜色分量信号中的至少另一个的增益。由散焦机构执行的散焦量和增益调整装置的增益调整取决于复合信号的内容。在本发明的另一方面中，可以在静态聚焦系统中单独使用点摆动方案，而不依赖于视频信号内容。

30. 发明授权

US06507372B1 Image enhancement circuit and method using mean matching/quantized mean matching histogram equalization and color compensation 有权
标题翻译：图像增强电路和方法使用平均匹配/量化平均匹配直方图均衡和色彩补偿
公开(公告)号：US06507372B1
公开(公告)日：2003-01-14
申请号：US09420583
申请日：1999-10-19
申请人： Yeong-taeg Kim
发明人： Yeong-taeg Kim
IPC分类号： H04N521
CPC分类号： G06T5/40 , G06T5/007 , G06T2207/10024 , G06T2207/20021 , H04N1/6027
摘要： In an image enhancement method and circuit, a luminance signal is extracted from input color signals. Histogram equalization is performed using a cumulative density function of the extracted luminance signal which is input in a screen unit. A transform function is controlled to map a mean level of the extracted luminance signal to itself, so that an adjusted luminance signal is output. The color signals are varied according to the variation of the luminance signals to output compensated color signals. Thus, image contrast is enhanced, and an undistorted color signal is provided at the same time. In order to reduce the hardware of the circuit, an interpolated cumulative density function is obtained by interpolating a quantized cumulative density function of an input luminance image and is used as a transform function. The transform function is controlled to map a mean level of the input luminance image to itself.
摘要翻译：在图像增强方法和电路中，从输入的彩色信号中提取亮度信号。使用在屏幕单元中输入的所提取的亮度信号的累积密度函数来执行直方图均衡。控制变换函数以将所提取的亮度信号的平均电平映射到其自身，从而输出调整后的亮度信号。颜色信号根据亮度信号的变化而变化，以输出补偿的颜色信号。因此，图像对比度增强，并且同时提供未失真的彩色信号。为了减少电路的硬件，通过内插输入亮度图像的量化累积密度函数并获得内插的累积密度函数，并将其用作变换函数。控制变换函数以将输入亮度图像的平均电平映射到其自身。

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