公开(公告)号：US5583650A

公开(公告)日：1996-12-10

申请号：US462877

申请日：1995-06-05

申请人： Frank A. Lane ,  Jill M. Boyce ,  Jack S. Fuhrer ,  John G. N. Henderson ,  Katsuo Mohri ,  Masafumi Nakamura ,  Takaharu Noguchi ,  Hiroo Okamoto ,  Masuo Oku ,  Michael A. Plotnick

发明人： Frank A. Lane ,  Jill M. Boyce ,  Jack S. Fuhrer ,  John G. N. Henderson ,  Katsuo Mohri ,  Masafumi Nakamura ,  Takaharu Noguchi ,  Hiroo Okamoto ,  Masuo Oku ,  Michael A. Plotnick

IPC分类号： G11B5/008 ,  G11B5/09 ,  G11B15/12 ,  G11B15/18 ,  G11B20/12 ,  G11B27/00 ,  G11B27/30 ,  H04N5/44 ,  H04N5/775 ,  H04N5/7826 ,  H04N5/783 ,  H04N5/93 ,  H04N5/945 ,  H04N7/015 ,  H04N7/26 ,  H04N7/52 ,  H04N9/78 ,  H04N9/79 ,  H04N9/804 ,  H04N9/806 ,  H04N9/82 ,  H04N9/888 ,  H04N19/89 ,  H04N5/76 ,  H04N5/78

CPC分类号： H04N21/4147 ,  G11B15/1875 ,  G11B20/1207 ,  G11B27/005 ,  G11B27/3027 ,  H04N19/37 ,  H04N19/89 ,  H04N21/4334 ,  H04N5/4401 ,  H04N5/93 ,  H04N7/015 ,  H04N7/52 ,  H04N9/78 ,  H04N9/8042 ,  H04N9/8047 ,  G11B15/125 ,  G11B2220/90 ,  G11B5/0086 ,  G11B5/09 ,  H04N5/775 ,  H04N5/78263 ,  H04N5/78266 ,  H04N5/783 ,  H04N5/945 ,  H04N9/7921 ,  H04N9/8066 ,  H04N9/8227 ,  H04N9/888

摘要： Methods of operating a digital video recording and playback device, such as a video tape recorder, to arrange trick play data into one or more groups, to generate error correction bits for each group of trick play data, e.g., a group of trick play data blocks, and to correct the data after being read back using the error correction bits is disclosed. The trick play data blocks are made to be smaller than normal play data blocks with multiple trick play data blocks being equal in size to a single normal play data block. By making a group of trick play data blocks equal in size to a single normal play data block, the group of trick play data blocks may be processed as a unit by the same error correction circuitry and in the same manner used to process individual normal play data blocks. In accordance with one embodiment, the error correction bits for a group of trick play data blocks are calculated treating the data in the group of trick play data blocks as a single unit. The error correction bits are appended to the last data block in the group of trick play data blocks. During trick play operation the trick play data blocks are read back and combined according to trick play data groups. Each group of trick play blocks is then processed using the same error correction circuitry used to process a normal play data block.

摘要翻译： 操作诸如磁带录像机的数字视频记录和回放设备的方法来将特技播放数据排列到一个或多个组中，以为每组特技播放数据生成纠错位，例如一组特技播放数据 块，并且在使用误差校正位读取之后校正数据被公开。 使特技播放数据块小于具有与单个正常播放数据块大小相等的多个特技播放数据块的普通播放数据块。 通过使一组特技播放数据块的大小与单个正常播放数据块相等，该特技播放数据块组可以通过相同的纠错电路以与用于处理各个正常播放相同的方式作为一个单元来处理 数据块。 根据一个实施例，计算一组特技播放数据块的纠错位，将特技播放数据块组中的数据作为一个单位处理。 误差校正位附加到特技播放数据块组中的最后一个数据块。 在特技播放操作期间，根据特技播放数据组读取并组合特技播放数据块。 然后使用用于处理正常播放数据块的相同的纠错电路处理每组特技播放块。

公开(公告)号：US5128747A

公开(公告)日：1992-07-07

申请号：US302171

申请日：1989-01-30

申请人： Michael A. Isnardi ,  Terrence R. Smith ,  Jack S. Fuhrer

发明人： Michael A. Isnardi ,  Terrence R. Smith ,  Jack S. Fuhrer

IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/46 ,  H04N11/24

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：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：US4914507A

公开(公告)日：1990-04-03

申请号：US228193

申请日：1988-08-04

申请人： Terrence R. Smith ,  Michael A. Isnardi ,  Jack S. Fuhrer ,  Christopher H. Strolle

发明人： Terrence R. Smith ,  Michael A. Isnardi ,  Jack S. Fuhrer ,  Christopher H. Strolle

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。

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

IPC分类号： G06T9/00 ,  H04N11/24

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。

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

IPC分类号： H04N9/88 ,  H04N9/882 ,  H04N5/76 ,  H04N9/535 ,  H04N5/78 ,  H04N5/795

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。

公开(公告)号：US5155580A

公开(公告)日：1992-10-13

申请号：US638301

申请日：1991-01-07

申请人： James J. Gibson ,  Robert N. Hurst, Jr. ,  Jack S. Fuhrer ,  Terrence R. Smith

发明人： James J. Gibson ,  Robert N. Hurst, Jr. ,  Jack S. Fuhrer ,  Terrence R. Smith

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：US4888641A

公开(公告)日：1989-12-19

申请号：US252340

申请日：1988-10-03

申请人： Michael A. Isnardi ,  Terrence R. Smith ,  Jack S. Fuhrer ,  Barbara J. Roeder

发明人： Michael A. Isnardi ,  Terrence R. Smith ,  Jack S. Fuhrer ,  Barbara J. Roeder

IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/46 ,  H04N11/24

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：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。

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

IPC分类号： H04N5/58 ,  H04N9/535

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。