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公开(公告)号：US4862271A
公开(公告)日：1989-08-29
申请号：US228192
申请日：1988-08-04
IPC分类号： H04N11/24
CPC分类号： H04N11/008
摘要： In a video signal expanding/compressing system including a video signal interpolator, video signals are peaked prior to interpolation. The amount of peaking is controlled in response to a signal representative of the distance between a pixel of an expanded/compressed video signal and a corresponding pixel of an original video signal.
摘要翻译： 在包括视频信号内插器的视频信号扩展/压缩系统中，视频信号在插值之前达到峰值。 响应于表示扩展/压缩视频信号的像素与原始视频信号的相应像素之间的距离的信号来控制峰化量。
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2.发明授权
公开(公告)号：US5128747A
公开(公告)日：1992-07-07
申请号：US302171
申请日：1989-01-30
CPC分类号： H04N11/008 , H04N11/004 , H04N19/577 , H04N19/30
摘要： Apparatus is disclosed for reducing unwanted jagged diagonal artifacts in a video signal. At an encoder, moving image information is intraframe averaged over a given frequency range, e.g., above 1.5 MHz, while still image information is subjected to a field repeat process over a given frequency range. At a decoder, still image information is subjected to a frame repeat process over the given field repeat frequency range, while moving image information is left unchanged.
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3.发明授权Video signal time expansion/compression apparatus using programmed output values 失效视频信号时间扩展/压缩设备使用编程输出值
公开(公告)号：US4914507A
公开(公告)日：1990-04-03
申请号：US228193
申请日：1988-08-04
IPC分类号： H04N11/24
CPC分类号： H04N11/008
摘要： A system for expanding/compressing a video signal includes a dual-port memory having read and write address inputs and a video signal input. A pixel counter provides a pixel location signal to the write address input of the dual-port memory, and to a programmed memory device (e.g., a PROM) including a look-up table. The memory device is programmed to provide a time expanded/compressed version of the pixel location signal in accordance with a programmed time expansion/compression factor, which is applied to the read address input of the dual-port memory. A time expanded/compressed video signal is developed at the output of the dual-port memory.
摘要翻译： 用于扩展/压缩视频信号的系统包括具有读和写地址输入和视频信号输入的双端口存储器。 像素计数器向双端口存储器的写入地址输入和包括查找表的编程存储器件（例如，PROM）提供像素位置信号。 存储器件被编程为根据编程的时间扩展/压缩因子来提供像素位置信号的时间扩展/压缩版本，其被应用于双端口存储器的读取地址输入。 在双端口存储器的输出端开发时间扩展/压缩视频信号。
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4.发明授权Extended definition widescreen television system using plural signal transmission channels 失效使用多信号传输通道的扩展定义宽屏电视系统
公开(公告)号：US4888641A
公开(公告)日：1989-12-19
申请号：US252340
申请日：1988-10-03
CPC分类号： H04N11/008 , H04N11/004 , H04N19/577 , H04N19/30
摘要： A system for transmitting and receiving signals representing a high-definition television (HDTV) image is disclosed. The signals are sent over two conventional 6 MHz NTSC channels. A first signal, the main signal, is developed by encoding circuitry from HDTV source signals to be compatible with existing NTSC receivers in that it produces a display on those receivers which is not significantly distorted. The main signal includes psychophysically hidden video information which may be used by an extended definition receiver to produce a widescreen image having a higher level of detail than a conventional video image. A second signal, the auxiliary signal, is developed at the transmitter by decoding the main signal and subtracting the decoded main signal from the original HDTV source signals. The auxiliary signal, which includes frequency components from 0 Hz to 20 MHz is split into three bands, A (0 Hz-6MHz), B (6 MHz-12 MHz) and C (12 MHz-18 MHz). Bands B and C are frequency converted to occupy the 0 Hz-6 MHz band and are time division multiplexed on a line by line basis. The combined B and C bands are then time division multiplexed with the A band on a frame by frame basis for still images. For moving images, only the A band is sent. The receiver decodes the main signal, and, using a motion signal sent with the main signal, decodes the auxiliary signal. The decoded main and auxiliary signals are combined to reproduce the HDTV image.
摘要翻译： 公开了一种用于发送和接收表示高分辨率电视（HDTV）图像的信号的系统。 信号通过两个常规的6 MHz NTSC通道发送。 第一个信号，主要信号，由HDTV源信号的编码电路开发，以与现有的NTSC接收机兼容，因为它在这些接收机上产生不显着失真的显示。 主要信号包括心理物理隐藏的视频信息，其可由扩展定义接收机使用以产生具有比常规视频图像更高的细节水平的宽屏幕图像。 通过对主信号进行解码并从原始HDTV信号中减去解码的主信号，在发送器处产生第二信号辅助信号。 包括0Hz至20MHz频率分量的辅助信号分为A（0Hz-6MHz），B（6MHz-12MHz）和C（12MHz-18MHz）三个频带。 频带B和频段C被频率转换成占用0Hz-6MHz频带，并逐行进行时分复用。 然后，对于静止图像，组合的B和C频带逐帧地与A频带进行时分复用。 对于运动图像，只发送A波段。 接收机解码主信号，并使用与主信号一起发送的运动信号，对辅助信号进行解码。 解码的主和辅助信号被组合以再现HDTV图像。
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公开(公告)号：US5155580A
公开(公告)日：1992-10-13
申请号：US638301
申请日：1991-01-07
IPC分类号： H04N11/24
CPC分类号： H04N11/008 , Y10S348/903
摘要： In a television signal processing system of the type which encodes an auxiliary carrier modulated with auxiliary image information in line format, which carrier is placed within the spectral band of standard television signal components, and wherein the modulated auxiliary carrier tends to interfere with the standard television signal, the interference is minimized by spatially variably attenuating the auxiliary image information. The attenuation function is selected to apply greater attenuation to the auxiliary image information at the extremities of the lines than toward the center of the lines.
摘要翻译： 在对以辅助图像信息进行调制的辅助载波进行编码的电视信号处理系统中，载波被放置在标准电视信号分量的谱带内，并且其中调制的辅助载波倾向于干扰标准电视 信号，通过空间可变地衰减辅助图像信息来最小化干扰。 衰减功能被选择为对线路的末端的辅助图像信息施加更大的衰减，而不是线路的中心。
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6.发明授权
公开(公告)号：US5083196A
公开(公告)日：1992-01-21
申请号：US520938
申请日：1990-05-09
CPC分类号： H04N11/008
摘要： In a widescreen signal encoding system for a television-type signal, side panel chrominance information is not subjected to time compression in an overscan region such as a horizontal overscan region containing time compressed low frequency side panel luminance information. Both low and high frequency side panel chrominance information, and high frequency side panel luminance information, modulate an auxiliary subcarrier.
摘要翻译： 在用于电视型信号的宽屏信号编码系统中，在诸如包含时间压缩的低频侧面板亮度信息的水平过扫描区域的过扫描区域中，不对侧面板色度信息进行时间压缩。 低频侧面板色度信息和高频侧面板亮度信息均调制辅助副载波。
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公开(公告)号：US4816899A
公开(公告)日：1989-03-28
申请号：US78150
申请日：1987-07-27
CPC分类号： H04N11/008
摘要： A widescreen television signal having left side, right side and center panel information is converted into a signal compatible with a standard television system, such as NTSC. In the compatible signal, center panel information is expanded to occupy the standard display region seen by a viewer, side panel low frequency information is compressed into the horizontal overscan region, and side panel high frequency information modulates an alternative subcarrier other than the chrominance subcarrier.
摘要翻译： 具有左侧，右侧和中央面板信息的宽屏幕电视信号被转换成与诸如NTSC的标准电视系统兼容的信号。 在兼容信号中，中心面板信息被扩展以占据观看者所看到的标准显示区域，侧面板低频信息被压缩到水平过扫描区域中，侧面板高频信息调制除了色度副载波之外的替代副载波。
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公开(公告)号：US5121209A
公开(公告)日：1992-06-09
申请号：US590760
申请日：1990-10-01
IPC分类号： H04N5/208
CPC分类号： H04N5/208
摘要： A video signal processing system includes a signal interpolator associated with time compression/expansion apparatus. The interpolator is preceded by a high frequency peaking network which responds to a variable control signal representative of a desired amount of displayed image sharpness. In a disclosed embodiment the peaking network responds to a control signal which is a function of a distance between image pixels, and a variable signal from a viewer adjustable image sharpness control.
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9.发明授权Widescreen television signal processing system with center and side panel image resolution uniformity 失效宽屏电视信号处理系统具有中央和侧面的图像分辨率均匀性
公开(公告)号：US4949167A
公开(公告)日：1990-08-14
申请号：US368141
申请日：1989-06-14
CPC分类号： H04N11/008 , H04N19/577
摘要： An NTSC compatible widescreen EDTV system encodes and decodes a television signal comprising (1) a main, standard format NTSC signal with auxiliary low frequency side panel image information compressed into an overscan region thereof; (2) auxiliary high frequency side panel image information; and (3) auxiliary high frequency horizontal luminance information. At an encoder, components 2 and 3 are intraframe averaged before modulating an alternate subcarrier. Component 1 is intraframe averaged exclusive of the compressed side panel information before being combined with the modulated alternate subcarrier.
摘要翻译： NTSC兼容宽屏EDTV系统对电视信号进行编码和解码，该电视信号包括（1）压缩到其过扫描区域中的辅助低频侧面板图像信息的主标准格式NTSC信号; （2）辅助高频侧面图像信息; 和（3）辅助高频水平亮度信息。 在编码器处，组件2和3在调制替代副载波之前进行帧内平均。 组分1在与调制的交替副载波组合之前，不包括压缩侧面板信息而被帧内平均化。
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公开(公告)号：US4910585A
公开(公告)日：1990-03-20
申请号：US215123
申请日：1988-06-29
CPC分类号： H04N11/008
摘要： A widescreen television signal containing center panel information and time compressed side panel information in an overscan region is intraframe processed above a given frequency only with respect to the center panel information. The intraframe processing apparatus includes a signal delay network with first and second 262H delay elements coupled between an input and an output of the delay network. During a first field interval, signals from the delay input and from an intermediate point between the delay elements are subtractively combined to produce a difference term which is coupled to a signal path. During a second field interval, signals from the delay output and from the intermediate point are subtractively combined to produce a difference term which is coupled to the signal path. An intraframe processed output signal is produced by combining the difference terms from the signal path with a signal from the intermediate delay point. A filter and an electronic gate in the signal path determine frequency selective intraframe processing of the center panel information alone.
摘要翻译： 包含中央面板信息和过扫描区域中的时间压缩侧面板信息的宽屏幕电视信号仅在相对于中心面板信息的给定频率上进行帧内处理。 帧内处理装置包括信号延迟网络，其中第一和第二262H延迟元件耦合在延迟网络的输入和输出之间。 在第一场间隔期间，来自延迟输入的信号和来自延迟元件之间的中间点的信号被减法地组合以产生耦合到信号路径的差分项。 在第二场间隔期间，来自延迟输出和来自中间点的信号被减法地组合以产生耦合到信号路径的差分项。 通过将来自信号路径的差分项与来自中间延迟点的信号组合来产生帧内处理的输出信号。 信号路径中的滤波器和电子门仅决定中心面板信息的频率选择性帧内处理。
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