-
1.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。
-
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.
-
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。
-
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。
-
公开(公告)号：US5070396A
公开(公告)日：1991-12-03
申请号：US435227
申请日：1989-11-06
申请人： Michael A. Isnardi , Jack S. Fuhrer
发明人： Michael A. Isnardi , Jack S. Fuhrer
IPC分类号： H04N11/24
CPC分类号： H04N11/008
摘要： In a widescreen signal encoding system for a television-type signal, side panel chrominance information is conveyed in double sideband form on an auxiliary subcarrier having a field inverting phase relative to the phase of a standard chrominance subcarrier. Side panel high frequency luminance information exclusive of low frequency information also is conveyed on the auxiliary subcarrier, but in single sideband form. Illustratively the auxiliary subcarrier is at the 3.58 MHz frequency of the standard chrominance subcarrier.
摘要翻译： 在用于电视型信号的宽屏信号编码系统中，侧面色度信息以相对于标准色度副载波的相位具有场反相的副载波的双边带形式传送。 排除低频信息的侧面板高频亮度信息也在辅助副载波上传送，但是以单边带形式传送。 说明性地，辅助副载波处于标准色度副载波的3.58MHz频率处。
-
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。
-
公开(公告)号：US4272785A
公开(公告)日：1981-06-09
申请号：US44364
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 of the type that substitutes a portion of delayed signal information for a real-time signal defect including circuitry for correcting chrominance phase reversal. The delayed signal is sampled at 1/2 the period of the chrominance before and after a 1H delay. The signal samples are summed and proportioned to provide a substitution signal having its chrominance signal in phase with the real time signal, and an average luminance signal exhibiting non-observable distortion.
摘要翻译： 这种类型的缺陷补偿电路将延迟的信号信息的一部分替换为包括用于校正色度相位反转的电路的实时信号缺陷。 延迟信号在1H延迟之前和之后的色度周期的1/2处进行采样。 将信号样本相加并成比例，以提供具有与实时信号同相的色度信号的替代信号，以及表现出不可观察到的失真的平均亮度信号。
-
8.发明授权Method and apparatus directed to processing trick play video data to compensate for intentionally omitted data 失效针对处理特技播放视频数据以补偿有意省略的数据的方法和装置
公开(公告)号：US5576902A
公开(公告)日：1996-11-19
申请号：US333097
申请日：1994-11-01
IPC分类号： H04N5/92 , G11B5/008 , G11B15/12 , G11B15/18 , G11B15/467 , G11B20/12 , G11B27/00 , H04N5/00 , H04N5/7826 , H04N5/783 , H04N7/26 , H04N7/52 , H04N7/54 , H04N9/804 , H04N9/82 , H04N9/888 , H04N5/78
CPC分类号： H04N21/4147 , G11B15/125 , G11B15/1875 , G11B15/4675 , G11B27/005 , G11B5/0086 , H04N19/00 , H04N19/184 , H04N19/37 , H04N19/61 , H04N19/895 , H04N21/236 , H04N21/434 , H04N7/54 , H04N9/8042 , H04N9/888 , G11B15/4673 , G11B2220/90 , H04N19/30 , H04N5/78263 , H04N5/783 , H04N9/8227
摘要： Digital video tape recorder apparatus that generates commands to instruct a television receiver to perform special processing, e.g., processing designed to enhance image quality, on video data received from the digital video tape recorder during trick play operation is disclosed. The commands from the video tape recorder inform the television receiver that the video tape recorder is operating in trick play mode and that video processing not performed on normal play video data output by the video tape recorder during normal play operation should be performed on the trick play video data which is output during trick play operation. The video data output during trick play operation is a subset of the normal play video data. The video processing commands output during trick play operation instruct a receiver to perform video processing intended to compensate for normal play data intentionally omitted by the video tape recorder from the trick play video data because of, e.g., data limitations resulting from the limited amount of data that can be accurately read from a tape during trick play operation. Method of generating the video processing commands which are output to a receiver during trick play video tape recorder operation are also disclosed.
摘要翻译： 公开了在特技播放操作期间产生用于指示电视接收机执行特殊处理（例如，旨在提高图像质量的处理）的视频数据的数字录像机装置。 磁带录像机的命令通知电视接收机，磁带录像机正在特技播放模式下操作，并且在正常播放操作期间，由磁带录像机输出的普通播放视频数据不进行视频处理，应在特技播放 在特技播放操作期间输出的视频数据。 在特技播放操作期间输出的视频数据是普通播放视频数据的子集。 在特技播放操作期间输出的视频处理命令指示接收机进行旨在补偿由录像带录像机故意忽略的特技播放视频数据的正常播放数据的视频处理，因为例如由有限数据量产生的数据限制 在特技播放操作期间可以从磁带准确地读取。 还公开了在特技播放录像机操作期间产生输出到接收机的视频处理命令的方法。
-
公开(公告)号：US4626892A
公开(公告)日：1986-12-02
申请号：US586271
申请日：1984-03-05
CPC分类号： H04N5/44543 , H04N21/47214 , H04N21/485 , H04N5/44 , H04N5/57
摘要： Apparatus for controlling various functions of a television receiver such as the picture and audio responses includes a keyboard with numbered keys which are normally used for selecting channels and a program key. When the program key is pressed, an on-screen character generator is caused to display a numbered list or menu of the various functions to be controlled. Thereafter, a particular function can be selected for control by pressing the correspondingly numbered key. This causes the numbered list or menu of the characteristics of the selected function, e.g., the brightness, contrast, sharpness, color level and color tint of the picture, to be displayed. Thereafter a particular characteristic can be selected for control by pressing the correspondingly numbered key.
摘要翻译： 用于控制诸如图像和音频响应的电视接收机的各种功能的装置包括具有通常用于选择频道的编号的键盘和程序键。 当按下程序键时，使屏幕上的字符发生器显示要控制的各种功能的编号列表或菜单。 此后，可以通过按下相应编号的键来选择特定的功能来进行控制。 这使得显示所选功能的特征的编号列表或菜单，例如图像的亮度，对比度，清晰度，色彩级别和色彩色调。 此后，可以通过按下相应编号的键来选择特定的特性来进行控制。
-
公开(公告)号：US4124867A
公开(公告)日：1978-11-07
申请号：US782020
申请日：1977-03-28
申请人： Jack S. Fuhrer , Eugene O. Keizer
发明人： Jack S. Fuhrer , Eugene O. Keizer
CPC分类号： G11B3/46
摘要： A novel pickup stylus adapted for playing back prerecorded signals from a video disc has an arrowhead-shape cross-section in the region of its tip. The pickup stylus includes a dielectric support element which has a prow defining the apex of the arrowhead-shape cross-section and a substantially flat rear surface remote from the prow defining the base of the arrowhead-shape cross-section. The entire rear surface is covered with conductive material to form a narrowed-electrode in the region of its tip.
摘要翻译： 一种适用于从视频盘播放预先记录的信号的新型拾音笔在其尖端区域中具有箭头形横截面。 拾纸笔包括介电支撑元件，其具有限定箭头形横截面的顶点的开口，以及远离限定箭头形状横截面的基部的起飞器的基本平坦的后表面。 整个后表面被导电材料覆盖，以在尖端的区域中形成变窄的电极。
-
-
-
-
-
-
-
-
-
搜索结果
20 条记录 (耗时 0.031 秒)
