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21. 发明授权

US5136381A TV signal transmission systems and methods 失效
标题翻译：电视信号传输系统及方法
公开(公告)号：US5136381A
公开(公告)日：1992-08-04
申请号：US407596
申请日：1989-09-15
申请人： Richard W. Citta , Timothy G. Laud , Ronald B. Lee
发明人： Richard W. Citta , Timothy G. Laud , Ronald B. Lee
IPC分类号： H04N7/015 , H04N7/08 , H04N7/085 , H04N7/088 , H04N7/12 , H04N7/26
CPC分类号： H04N7/085 , H04N19/186 , H04N7/015 , H04N7/08 , H04N7/088 , H04N7/127
摘要： A hybrid television signal of less transmission power or better signal to noise performance is made up by removing low frequency analog components from the video signal, digitizing them and sending them as data in non-active video portions of the transmitted signal. A two step hybridization process, with the first step removing the line averaged value of the video components of the video signal and the second step removing the remainder of the video components under 200 KHz, is described. Temporal filtering, signal pre-emphasis, compression, time dispersion and double sideband suppressed carrier modulation about a centered carrier are disclosed for reducing peak signal amplitudes and for minimizing co-channel interference to and from NTSC signals. Time dispersion is done horizontally, vertically or both to reduce the peak signal amplitudes. Time dispersion in conjunction with low frequency removal and temporal filtering is preferred. Time dispersing lower frequencies more than higher frequencies contributes to an optimized video display. The resultant signal system is uniquely adapted to a high definition television signal in a limited frequency channel with an NTSC signal.
摘要翻译：通过从视频信号中去除低频模拟分量，对它们进行数字化并将其作为发送信号的非有效视频部分中的数据发送来构成具有较少传输功率或更好的信噪比性能的混合电视信号。描述了两步杂交处理，其中第一步除去视频信号的视频分量的行平均值，第二步除去200KHz以下的其余视频分量。公开了关于中心载波的时间滤波，信号预加重，压缩，时间色散和双边带抑制的载波调制，用于降低峰值信号幅度并最小化与NTSC信号的共信道干扰。时间色散在水平，垂直或两者上进行，以减小峰值信号幅度。优选与低频去除和时间滤波相结合的时间色散。将较低频率分散到更高频率的时间有助于优化视频显示。所得信号系统独特地适应于具有NTSC信号的有限频率信道中的高分辨率电视信号。

22. 发明授权

US5122868A Side panel signal processor for a widescreen television system 失效
标题翻译：用于宽带电视系统的侧面信号处理器
公开(公告)号：US5122868A
公开(公告)日：1992-06-16
申请号：US599554
申请日：1990-10-18
申请人： Michael A. Isnardi
发明人： Michael A. Isnardi
IPC分类号： H04N7/01 , H04N7/12 , H04N7/32 , H04N11/20 , H04N11/24
CPC分类号： H04N19/50 , H04N11/008 , H04N7/127 , Y10S348/904
摘要： In a widescreen television signal processing system, a side panel high frequency luminance information component and a side panel color difference information component are combined and processed as a combined signal by a noise reduction encoder, time expander and filter before modulating an auxiliary subcarrier. After demodulation at the decoder, the combined signal is filtered, time compressed and processed by a noise reduction unit before being separated into its constituent components.
摘要翻译：在宽屏幕电视信号处理系统中，在调制辅助副载波之前，通过噪声降低编码器，时间扩展器和滤波器将侧面板高频亮度信息分量和侧面板色差信息分量组合和处理为组合信号。在解码器解调之后，组合信号被滤波，时间压缩并由噪声降低单元处理，然后被分离成其组成部件。

23. 发明授权

US5016104A Receiver-compatible noise reduction systems 失效
标题翻译：接收器兼容的降噪系统
公开(公告)号：US5016104A
公开(公告)日：1991-05-14
申请号：US370171
申请日：1989-06-22
申请人： Jae S. Lim
发明人： Jae S. Lim
IPC分类号： H04N5/21 , H04N7/015 , H04N7/12 , H04N7/26
CPC分类号： H04N7/015 , H04N5/21 , H04N7/127 , H04N19/30
摘要： Method and systems for combatting degradation in the transmission or storage of data signals especially useful in the field of motion picture or television signal transmission, such that an advanced receiver can decode that information to provide improved picture quality, while a standard receiver will display an image with minimally visible impairments. A data signal can be decomposed into a low frequency signal and a high frequency signal, and that the high frequency signal can then be modified by the application of a series of scaling factors over selected regions in response to local variance of data values in such regions. The low frequency signal and the modified high frequency signal are then combined and transmitted (or recorded) as a modulated facsimile of the data signal, together with the scaling factors. In the advanced receiver (or playback unit), the data signal is reconstructed from the modulated facsimile with concommittant reduction in signal degradation by the application of a series of inverse scaling factors.
摘要翻译：用于防止在运动图像或电视信号传输领域特别有用的数据信号的传输或存储中的劣化的方法和系统，使得高级接收机可以解码该信息以提供改善的图像质量，而标准接收机将显示图像具有最小可见的损伤。数据信号可以分解成低频信号和高频信号，然后响应于这些区域中的数据值的局部方差，通过在所选择的区域上应用一系列缩放因子来修改高频信号。然后将低频信号和修改的高频信号与缩放因子一起组合和发送（或记录）为数据信号的调制传真。在高级接收机（或播放单元）中，通过应用一系列逆比例因子，从调制的传真机重建数据信号，同时降低信号劣化。

24. 发明授权

US4504852A Method and apparatus for video standard conversion 失效
标题翻译：视频标准转换的方法和装置
公开(公告)号：US4504852A
公开(公告)日：1985-03-12
申请号：US416501
申请日：1982-09-10
申请人： Robert P. Ducret
发明人： Robert P. Ducret
IPC分类号： H04N11/20 , H04N7/01 , H04N7/12 , H04N9/797 , H04N11/24 , H04N5/02
CPC分类号： H04N7/125 , H04N11/002 , H04N7/01 , H04N7/127 , H04N9/7973
摘要： A video signal having a given line scan rate is converted to a different line scan rate by analog encoding such that each scan line is divided into a finite number of picture elements and video information corresponding to each picture element is modulated onto one of a series of carrier frequencies for transmission in parallel form. An inexpensive decoder scans the encoded video signal to reconstruct an output video signal having a line scan rate related to the rate of repetition of the encoded video signal scanning cycle.
摘要翻译：具有给定线扫描速率的视频信号通过模拟编码被转换成不同的行扫描速率，使得每个扫描线被划分为有限数量的像素，并且与每个像素相对应的视频信息被调制到一系列载波频率以并行形式传输。廉价的解码器扫描编码的视频信号以重构具有与编码的视频信号扫描周期的重复速率相关的线扫描速率的输出视频信号。

25. 发明授权

US3697682A Video signal processing 失效
标题翻译：视频信号处理
公开(公告)号：US3697682A
公开(公告)日：1972-10-10
申请号：US3697682D
申请日：1971-06-11
申请人： BELL TELEPHONE LABOR INC
发明人： BERG ANTHONY DAVID
IPC分类号： H04N7/08 , H04N7/12 , H04N7/06
CPC分类号： H04N7/0806 , H04N7/0803 , H04N7/127
摘要： A television picture is scanned such that each frame of the resultant video signal comprises a succession of N interlaced fields. Each field is then delayed by a time equal to the field scan time multiplied by the factor (N-I), where I represents its ordinal place in the succession. The fields, which thus coexist in time, are then interleaved in the frequency domain. The video signal is thereby compressed by a factor of N on a frame-by-frame basis, and additional data can be time multiplexed between the compressed frames. Alternatively, the bandwidth of the signal can be reduced by stretching the time-compressed frames.

26. 发明授权

US2944113A System for broad-band recording 失效
标题翻译：宽带录音系统
公开(公告)号：US2944113A
公开(公告)日：1960-07-05
申请号：US59698856
申请日：1956-07-10
申请人： TELEFUNKEN GMBH
发明人： WEHDE HEINZ P , ROTHE PAUL G
IPC分类号： H04N5/917 , H04N5/919 , H04N7/12
CPC分类号： H04N5/917 , H04N5/919 , H04N7/127

27. 发明授权

US2740912A Television pick-up tube 失效
标题翻译：电视接管
公开(公告)号：US2740912A
公开(公告)日：1956-04-03
申请号：US18563550
申请日：1950-09-19
申请人： BELL TELEPHONE LABOR INC
发明人： GRAHAM ROBERT E
IPC分类号： H01J31/26 , H04N3/34 , H04N7/12
CPC分类号： H04N3/34 , H01J31/26 , H04N7/127

28. 发明授权

US2146804A Television system 失效
公开(公告)号：US2146804A
公开(公告)日：1939-02-14
申请号：US75629334
申请日：1934-12-06
申请人： RCA CORP
发明人： MELVILLE DOWSETT HARRY , QUINTRELL WALKER LOUIS EDWARD
IPC分类号： H04N7/12
CPC分类号： H04N7/127

29. 发明授权

US2026379A System of pulse transmission 失效
标题翻译：脉冲传输系统
公开(公告)号：US2026379A
公开(公告)日：1935-12-31
申请号：US50009230
申请日：1930-12-04
申请人： TELEVISION LAB INC
发明人： FARNSWORTH PHILO T
IPC分类号： H04N5/208 , H04N7/12
CPC分类号： H04N5/208 , H04N7/127

30. 发明授权

US1769918A Electrooptical transmission system 失效
公开(公告)号：US1769918A
公开(公告)日：1930-07-08
申请号：US33713229
申请日：1929-02-02
申请人： BELL TELEPHONE LABOR INC
发明人： FRANK GRAY , HEFELE JOHN R
IPC分类号： H04J1/00 , H04N7/08 , H04N7/12 , H04N11/12
CPC分类号： H04N7/0803 , H04J1/00 , H04N7/127 , H04N11/12

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