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11.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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12.发明授权
公开(公告)号：US4855824A
公开(公告)日：1989-08-08
申请号：US139339
申请日：1987-12-29
申请人： Jack S. Fuhrer
发明人： Jack S. Fuhrer
CPC分类号： G06T9/004 , H04N11/008
摘要： An NTSC compatible, single channel widescreen EDTV system encodes and decodes a television signal comprising (1) a main, standard format NTSC signal wth 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. High frequency components 2 and 3 are subjected to non-linear amplitude companding, with large amplitude compression at an encoder and inverse amplitude expansion at a decoder.
摘要翻译： NTSC兼容的单通道宽屏EDTV系统对电视信号进行编码和解码，包括（1）被压缩成其过扫描区域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。 高频分量2和3受到非线性幅度压扩，在编码器处具有大幅度压缩，在解码器处具有反幅度扩展。
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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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14.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：US4524447A
公开(公告)日：1985-06-18
申请号：US498151
申请日：1983-05-25
申请人： Donald H. Willis , Jack S. Fuhrer
发明人： Donald H. Willis , Jack S. Fuhrer
IPC分类号： H04N1/405 , G06F17/10 , G06T5/00 , G06T9/00 , H03H17/02 , H03M1/04 , H03M1/20 , H03M7/30 , H03M7/36 , H04N9/64 , H04N11/04 , H04N9/50 , H04N9/32
CPC分类号： H04N9/64
摘要： The present invention provides for the generation of digitally dithered digital signals which can have an apparent quantizing resolution unaffected by truncation of the least significant bit. The truncated digital signal is dithered in an ordered fashion by adding thereto a bit developed in response to one condition of the truncated bit and is not dithered in response to another condition thereof. The original digital signal can be reconstructed by combining successive samples of the truncated digital signals. One feature of the present invention provides a truncation of digital signals.
摘要翻译： 本发明提供数字抖动数字信号的产生，其可以具有不受截断最低有效位影响的明显量化分辨率。 截断的数字信号以有序的方式通过加上响应于截断位的一个条件而产生的位而被响应，并且响应于其另一个条件而不抖动。 原始数字信号可以通过组合截断的数字信号的连续样本来重建。 本发明的一个特征提供了数字信号的截断。
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16.发明授权
公开(公告)号：US4451849A
公开(公告)日：1984-05-29
申请号：US391415
申请日：1982-06-23
申请人： Jack S. Fuhrer
发明人： Jack S. Fuhrer
CPC分类号： H04N5/58
摘要： The contrast of an image reproduced by a television receiver is manually adjustable by means of a picture control potentiometer, and automatically adjustable by means of an ambient light responsive circuit. Automatic picture control is accomplished selectively, independent of the manual control setting, in accordance with a predetermined combination of ambient light and image brightness levels such that the contrast of bright images, rather than the contrast of all images, is automatically reduced in low ambient light. In a preferred embodiment such automatic picture control is accomplished by using the light responsive circuit to control the threshold operating level of an automatic kinescope beam current limiter of the receiver.
摘要翻译： 由电视接收机再现的图像的对比度可以通过图像控制电位器手动调节，并且可以通过环境光响应电路自动调节。 根据环境光和图像亮度水平的预定组合，选择性地完成自动图像控制，而与手动控制设置无关，使得在低环境光下自动降低亮度图像的对比度而不是所有图像的对比度 。 在优选实施例中，通过使用光响应电路来控制接收器的自动显像管光束限流器的阈值操作电平来实现这种自动图像控制。
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公开(公告)号：US4933765A
公开(公告)日：1990-06-12
申请号：US238694
申请日：1988-08-30
申请人： Leonard N. Schiff , Jack S. Fuhrer
发明人： Leonard N. Schiff , Jack S. Fuhrer
CPC分类号： H04N11/002 , H04N7/015 , H04N9/646
摘要： A television system for generating video signals for reception by a receiver having adaptive processing circuitry susceptible of errors includes circuitry for emulating portions of the receiver and detecting the occurrences of such errors. A signal representing the occurrences of the errors is generated and combined with the transmitted video signal. At the receiver the error signal is separated from the video signal and utilized by the adaptive processing circuitry to ameliorate the effects of such errors.
摘要翻译： 用于产生用于由具有易错误的自适应处理电路的接收机接收的视频信号的电视系统包括用于模拟接收机的部分并检测这种错误的发生的电路。 产生表示错误发生的信号并与所发送的视频信号组合。 在接收机处，误差信号与视频信号分离，并由自适应处理电路利用，以改善这种误差的影响。
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公开(公告)号：US4245238A
公开(公告)日：1981-01-13
申请号：US38203
申请日：1979-05-11
申请人： Jack S. Fuhrer
发明人： Jack S. Fuhrer
CPC分类号： H04N9/78 , H03G11/002
摘要： In a color television receiver including a comb filter for separating luminance and chrominance components of a color television signal, a network is included for selectively restoring, enhancing and paring vertical image detail to preserve and enhance vertical resolution in the luminance content of a displayed image. The comb filter provides a combed luminance signal output from which vertical detail signal information has been unavoidably deleted, and a combed chrominance signal output including signal frequency components representative of the deleted detail signal, which are selectively extracted from the combed chrominance signal. Low level detail signals are restored to the combed luminance signal via a first signal processing network which exhibits a prescribed signal restoration gain. The detail signal is also combined with the combed luminance signal via a second signal processing network which cores (removes) low level detail signals including noise, enhances moderate level detail signals through amplification to enhance vertical image definition, and pares (amplitude reduces) high level detail signals. A resultant reconstituted luminance component manifests restored low level vertical detail information, enhanced moderate level vertical detail information without enhancing unwanted signal components such as noise, and pared high level detail signals to avoid excessive contrast.
摘要翻译： 在包括用于分离彩色电视信号的亮度和色度分量的梳状滤波器的彩色电视接收机中，包括用于选择性地恢复，增强和配对垂直图像细节的网络，以保持和增强显示图像的亮度内容中的垂直分辨率。 梳状滤波器提供梳状亮度信号输出，垂直细节信号信息已经不可避免地被删除，以及梳状色度信号输出，包括代表删除的细节信号的信号频率分量，其从精梳色度信号中选择性地提取。 低电平细节信号经由展现规定信号恢复增益的第一信号处理网络恢复到精梳亮度信号。 细节信号还通过第二信号处理网络与梳状亮度信号相结合，第二信号处理网络核心（去除）包括噪声的低电平细节信号，通过放大增强中等电平细节信号，以增强垂直图像定义，以及削减（幅度降低）高电平 细节信号。 所产生的重构亮度分量表现出恢复的低水平垂直细节信息，增强的中等水平垂直细节信息，而不增强诸如噪声的不期望的信号分量，以及削减的高电平细节信号，以避免过度的对比度。
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公开(公告)号：US4232340A
公开(公告)日：1980-11-04
申请号：US44532
申请日：1979-06-01
申请人： Jack S. Fuhrer
发明人： Jack S. Fuhrer
CPC分类号： H04N9/882
摘要： A defect compensation circuit which substitutes a portion of delayed signal information for a real-time signal defect. A capacitor passes the a-c component of the delayed signal and stores the d-c component of the real-time signal to preclude the occurrence of d-c shifts upon effecting the substitution of signal.
摘要翻译： 将延迟信号信息的一部分代替实时信号缺陷的缺陷补偿电路。 电容器通过延迟信号的a-c分量并存储实时信号的d-c分量，以防止在进行信号替换时出现d-c位移。
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公开(公告)号：US4223339A
公开(公告)日：1980-09-16
申请号：US38202
申请日：1979-05-11
申请人： William A. Lagoni , Jack S. Fuhrer
发明人： William A. Lagoni , Jack S. Fuhrer
CPC分类号： H04N9/646
摘要： In a color television receiver including a comb filter for separating luminance and chrominance components of a color television signal, a network is included for selectively restoring and enhancing vertical image detail to preserve and enhance vertical resolution in the luminance content of a displayed image. The comb filter provides a combed luminance signal output from which vertical detail signal information has been unavoidably deleted, and a combed chrominance signal output including signal frequency components representative of the deleted signal, which are selectively extracted from the combed chrominance signal. Low level detail signals are restored to the combed luminance signal via a first signal processing network with a prescribed restoration gain. The detail signal is also combined with the combed luminance signal via a second signal processing network which cores (removes) low level detail signals including noise, and enhances higher level detail signals through amplification to enhance vertical image definition. A resultant reconstituted luminance component manifests restored low level vertical detail information as well as enhanced higher level vertical detail information, without enhancing unwanted signal components such as noise.
摘要翻译： 在包括用于分离彩色电视信号的亮度和色度分量的梳状滤波器的彩色电视接收机中，包括用于选择性地恢复和增强垂直图像细节的网络，以保持和增强显示图像的亮度内容中的垂直分辨率。 梳状滤波器提供梳状亮度信号输出，从而不可避免地删除垂直细节信号信息，以及包括代表删除信号的信号频率分量的梳状色度信号输出，其从精梳色度信号中选择性地提取。 低电平细节信号通过具有规定恢复增益的第一信号处理网络恢复到精梳亮度信号。 细节信号还通过第二信号处理网络与梳状亮度信号相结合，第二信号处理网络对包含噪声的低级细节信号进行核心（去除），并且通过放大来增强更高级的细节信号以增强垂直图像定义。 所得到的重构亮度分量表现出恢复的低水平垂直细节信息以及增强的较高级垂直细节信息，而不增强诸如噪声的不期望的信号分量。
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