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41. 发明授权

US4724491A Inserting television advertising spots automatically 失效
标题翻译：自动插入电视广告点
公开(公告)号：US4724491A
公开(公告)日：1988-02-09
申请号：US645117
申请日：1984-08-28
申请人： Trevor Lambert
发明人： Trevor Lambert
IPC分类号： G11B27/024 , G11B27/029 , G11B27/28 , H04N5/765 , H04N7/10 , H04N9/491 , H04N5/782
CPC分类号： H04N7/10 , G11B27/024 , G11B27/029 , G11B27/28 , H04N5/765 , G11B2220/90
摘要： A downlink dish receives television signals from a remote location transmitted by satellite. Satellite receivers demodulate these received signals and normally transmit them through a switch to modulators which modulate respective carrier signals to retransmit the remote program video signals over a cable to subscribers. The switch also transmits the demodulated signals to tone monitors that detect a tone indicating the beginning of a spot message interval. A computer control responds to these detected signals to enable one or more video tape machines to deliver recorded spot messages to a time base corrector that also receives portions of the program video signal adjacent the spot message interval from the switch. The time base corrector delivers the time-base-corrected video signals through the switch to the modulators for modulating a selected carrier signal with program video signals and spot message signals without flicker. The computer control also enables tape monitors to record the spot messages when they are transmitted with information on the time and channel of transmission in support of billing. A data entry means furnishes information signals to the computer control for properly scheduling the rescheduling the transmission of spot messages.
摘要翻译：下行链路盘从卫星发送的远程位置接收电视信号。卫星接收机解调这些接收到的信号，并且通常通过开关将它们发送到调制器，调制器调制相应的载波信号，以通过电缆向用户重传远程节目视频信号。开关还将解调的信号发送到音调监视器，该音调监视器检测指示点信息间隔的开始的音调。计算机控制器响应这些检测到的信号，以使得一个或多个录像带机将记录的点消息传送到时基校正器，该时基校正器还接收与交换机相邻的点消息间隔的节目视频信号的部分。时基校正器通过开关将时基校正的视频信号传送到调制器，用于利用节目视频信号和点消息信号调制所选择的载波信号而不闪烁。计算机控制还使磁带监视器能够在发送现场消息时记录有关支持计费的传输时间和频道的信息。数据输入装置向计算机控制装置提供信息信号，以适当地调度重新安排点消息的传输。

42. 发明授权

US4686585A VTR having automatic carrier detection 失效
标题翻译： VTR具有自动载波检测
公开(公告)号：US4686585A
公开(公告)日：1987-08-11
申请号：US700732
申请日：1985-02-11
申请人： Ichitaro Sato
发明人： Ichitaro Sato
IPC分类号： G11B20/02 , G11B5/027 , H04N5/92 , H04N5/922 , H04N5/93 , H04N9/79 , H04N9/80 , H04N9/83 , H04N9/87 , H04N9/89 , H04N5/78 , H04N9/491
CPC分类号： H04N9/832 , H04N5/9205 , H04N9/7921 , H04N9/833
摘要： An apparatus for reproducing from a magnetic tape first and second video signals which are frequency modulated on a carrier, the first video signal having the center frequency of the carrier lower than that of the second video signal is disclosed, which includes a demodulator for demodulating the first and second video signals, a first low-pass filter coupled to the demodulator for filtering the first and second video signals demodulated by the demodulator, the first low-pass filter having a first cut-off frequency, a second low-pass filter coupled to the demodulator for filtering the first and second video signals demodulated by the demodulator, the second low-pass filter having a second cut-off frequency which is lower than the first cut-off frequency, a detector connected prior to the demodulator for detecting whether a reproduced video signal is the first or second video signal and for generating a control signal in response thereto and a switching circuit for selectively supplying the output signal of the first and second low-pass filters to an output terminal in accordance with the control signal from the detector.
摘要翻译：一种用于从磁带再现第一和第二视频信号的装置，其中第一和第二视频信号在载波上进行频率调制，所述第一视频信号具有低于第二视频信号的载波的中心频率，该解调器包括：解调器，第一和第二视频信号，耦合到解调器的第一低通滤波器，用于对由解调器解调的第一和第二视频信号进行滤波，第一低通滤波器具有第一截止频率，第二低通滤波器耦合用于对由解调器解调的第一和第二视频信号进行滤波的解调器，具有低于第一截止频率的第二截止频率的第二低通滤波器，在解调器之前连接的检测器，用于检测是否再现的视频信号是第一或第二视频信号，并且用于响应于此产生控制信号和用于选择性地供应的切换电路根据来自检测器的控制信号将第一和第二低通滤波器的输出信号输出到输出端。

43. 发明授权

US4549225A Color video signal processing circuit for performing level control and time axis deviation compensation 失效
标题翻译：用于执行电平控制和时间轴偏移补偿的彩色视频信号处理电路
公开(公告)号：US4549225A
公开(公告)日：1985-10-22
申请号：US310131
申请日：1981-10-09
申请人： Yasuaki Watanabe
发明人： Yasuaki Watanabe
IPC分类号： H04N9/793 , H04N9/85 , H04N9/87 , H04N9/491
CPC分类号： H04N9/793 , H04N9/85 , H04N9/87
摘要： A reproduced color video signal processing circuit in a rotary recording medium reproducing apparatus reproduces a recorded signal from a rotary recording medium which is recorded with a composite color video signal in which a carrier chrominance signal is frequency-converted into a low frequency band and multiplexed using a common frequency band within a part of a frequency band of a luminance signal, and levels of the carrier chrominance signal and a color burst signal are controlled according to the level of the carrier chrominance signal with respect to the color burst signal. The processing circuit comprises a carrier chrominance signal obtaining circuit for obtaining a carrier chrominance signal returned to the original frequency band by frequency-converting the reproduced composite color video signal, a level controlling circuit for controlling the level of the color burst signal to a constant value according to the level of the color burst signal within the carrier chrominance signal thus obtained, a time axis deviation compensation circuit for substantially compensating for a time axis deviation component of the carrier chrominance signal which is to be obtained by the carrier chrominance signal obtaining circuit, a time axis deviation component adding and frequency converting circuit for adding the time axis deviation component to the carrier chrominance signal thus obtained, and frequency-converting and returning the carrier chrominance signal to the low frequency band, and a luminance signal obtaining circuit for obtaining the luminance signal by subtracting the carrier chrominance signal returned to the low frequency band from the reproduced composite color viedo signal.
摘要翻译：在旋转记录介质再现装置中的再现彩色视频信号处理电路再现来自旋转记录介质的记录信号，其中记录有复合彩色视频信号，其中载波色度信号被频率转换为低频带并且使用根据与色同步信号相关的载波色度信号的电平，控制亮度信号的频带的一部分内的公共频带，载波色度信号和色同步信号的电平。处理电路包括载波色度信号获取电路，用于通过对再现的复合彩色视频信号进行频率转换来获得返回到原始频带的载波色度信号;电平控制电路，用于将色同步信号的电平控制为恒定值根据如此获得的载波色度信号中的色同步信号的电平，用于基本上补偿由载波色度信号获取电路获得的载波色度信号的时间轴偏差分量的时间轴偏差补偿电路，时间轴偏差分量相加和频率转换电路，用于将如此获得的载波色度信号添加时间轴偏差分量，并将载波色度信号频率转换并返回到低频带;以及亮度信号获取电路，用于获得亮度信号由sub 从再现的复合颜色viedo信号中牵引返回到低频带的载波色度信号。

44. 发明授权

US4519001A Apparatus for providing dropout compensation and error concealment in a PAL format video information signal 失效
标题翻译：用于在PAL格式视频信息信号中提供压差补偿和误差隐藏的装置
公开(公告)号：US4519001A
公开(公告)日：1985-05-21
申请号：US315578
申请日：1981-10-27
申请人： Eric F. Morrison
发明人： Eric F. Morrison
IPC分类号： H04N9/804 , H04N9/64 , H04N9/808 , H04N9/88 , H04N9/888 , H04N9/491
CPC分类号： H04N9/64 , H04N9/888
摘要： Apparatus is disclosed for providing error compensation of a video information signal having a PAL format. Sampling of the analog PAL format video information signal is done at a rate of four times the chrominance subcarrier frequency and is done in a precise manner whereby the samples are taken along orthogonal vector axes that are oriented at 45.degree. relative to the U and V vector axis. When samples are taken at the prescribed locations, substitute samples in the form of multi-bit digital words can be used as replacements for defective or missing sample words, which replacement samples exhibit the same vector phase as the defective sample, but which are taken from either the preceding or succeeding line relative to the line in which the defective sample is located. The apparatus of the present invention obviates the necessity of performing any arithmetic computation to derive the value for the sample to be substituted. Moreover, the sample is spatially closely related to the defective sample, i.e., it is merely spatially removed one horizontal line from the line of interest and is vertically aligned relative to the defective sample. The detection of a defective sample activates the apparatus to automatically substitute the proper digital data word sample for the defective sample. If part of or an entire line is missing or defective, the system automatically inserts an average of the preceding and succeeding line during the period of time when the missing or defective information is detected.
摘要翻译：公开了提供具有PAL格式的视频信息信号的误差补偿的装置。模拟PAL格式视频信息信号的采样以色度副载波频率的四倍的速度进行，并以精确的方式进行，从而沿着垂直矢量轴拍摄样本，其相对于U和V矢量定向在45度轴。当在规定位置拍摄样本时，以多位数字字形式替代样本可用作缺陷或丢失样本字的替代品，该替换样品与缺陷样品呈现相同的矢量相位，但取自相对于缺陷样本所在的行的前一行或后一行。本发明的装置避免了执行任何算术运算以导出待替换样本的值的必要性。此外，样品在空间上与缺陷样品密切相关，即仅在空间上从感兴趣的线移除一条水平线，并相对于有缺陷的样品垂直取向。对缺陷样品的检测激活该装置以自动地替换正确的数字数据字样本用于有缺陷的样品。如果部分或整行丢失或有缺陷，系统会在检测到丢失或缺陷信息的时间段内自动插入前一行的平均值。

45. 发明授权

US4514769A Method and apparatus for processing color video signals for recording and reproducing 失效
标题翻译：用于处理用于记录和再现的彩色视频信号的方法和装置
公开(公告)号：US4514769A
公开(公告)日：1985-04-30
申请号：US108881
申请日：1979-12-31
申请人： Luigi C. Gallo
发明人： Luigi C. Gallo
IPC分类号： G11B17/00 , G11B27/034 , H04N5/781 , H04N9/79 , H04N9/808 , H04N9/87 , H04N9/491
CPC分类号： H04N5/781 , G11B17/005 , G11B27/034 , H04N9/79 , H04N9/808 , H04N9/87 , G11B2220/20
摘要： An analog color video information signal is sampled at times determined by a first clock signal of a predetermined frequency whose phase is reversed on every consecutive horizontal line. The obtained samples are digitized and encoded for recording on a magnetic record medium, with the encoded data timed relative to a second clock signal of the predetermined frequency whose phase is continuous. The reproduced encoded data is processed under the control of two additional clock signals, each of which is of the predetermined frequency and has its phase reversed on every consecutive horizontal line. In the processing, the reproduced data is decoded, reclocked relative to a first of the two additional clock signals, has the chrominance component of the video information selectively inverted and converted back to analog form under the control of the second of the two additional clock signals.
摘要翻译：模拟彩色视频信息信号在由每个连续水平行相反的预定频率的第一时钟信号确定的时间被采样。将获得的样本数字化并编码用于在磁记录介质上记录，其中编码数据相对于相位连续的预定频率的第二时钟信号定时。再现的编码数据在两个额外的时钟信号的控制下进行处理，每个附加的时钟信号都是预定频率，并且在每个连续的水平行上具有相位反转。在处理中，再现数据被解码，相对于两个附加时钟信号中的第一个被重新编码，在视频信息的色度分量被选择性地反相并在两个附加时钟信号中的第二个的控制下被转换成模拟形式。

46. 发明授权

US4500930A Television signal standards conversion using a helical scan VTR 失效
标题翻译：电视信号标准转换使用螺旋扫描VTR
公开(公告)号：US4500930A
公开(公告)日：1985-02-19
申请号：US382198
申请日：1982-05-26
申请人： Kaarlo J. Hamalainen , Glenn A. Reitmeier
发明人： Kaarlo J. Hamalainen , Glenn A. Reitmeier
IPC分类号： H04N5/7826 , H04N7/01 , H04N9/87 , H04N11/20 , H04N9/491
CPC分类号： H04N9/8707 , H04N11/20
摘要： A television standards converter uses a VTR. The capstan speed is that of the video signal recorded on the tape, however, the drum speed is that of the standard to which it is desired to convert. Thus the reproduced signal has the original line rate but the new field rate. A line rate converter converts the reproduced signal to the new line rate, the signal is now totally in the new standard.
摘要翻译：电视标准转换器使用VTR。主导速度是记录在磁带上的视频信号速度，然而，鼓速度是希望转换的标准速度。因此，再现信号具有原始线路速率，但是具有新的场速率。线路速率转换器将再现的信号转换为新的线路速率，该信号现在完全符合新的标准。

47. 发明授权

US4499503A Video format signal recording and reproduction system 失效
标题翻译：视频格式信号记录和再现系统
公开(公告)号：US4499503A
公开(公告)日：1985-02-12
申请号：US358733
申请日：1982-03-16
申请人： Tsutomu Suzuki
发明人： Tsutomu Suzuki
IPC分类号： H04N5/91 , G11B3/00 , G11B7/00 , G11B7/004 , G11B20/02 , H04N1/00 , H04N1/21 , H04N5/915 , H04N9/491
CPC分类号： H04N5/9155 , H04N1/00098 , H04N2201/3264
摘要： A video format signal recording and reproduction system includes means for providing audio voice-over or narration during a still video segment. A portion of the video image corresponding to around 20 horizontal lines is used to insert and record the audio data, while a color level generator operates to fill predetermined color in the 20 or so lines on the face of the CRT.
摘要翻译：视频格式信号记录和再现系统包括用于在静止视频段期间提供音频声音或叙述的装置。对应于大约20条水平线的视频图像的一部分用于插入和记录音频数据，而色彩级发生器操作以填充CRT的面上的20个或更多行中的预定颜色。

48. 发明授权

US4499502A Compressed bandwidth frequency modulation signal format apparatus and method 失效
标题翻译：压缩带宽调制信号格式设备和方法
公开(公告)号：US4499502A
公开(公告)日：1985-02-12
申请号：US397309
申请日：1982-07-12
申请人： Wayne R. Dakin , Jordan Isailovic
发明人： Wayne R. Dakin , Jordan Isailovic
IPC分类号： H04N11/02 , H04N9/797 , H04N9/802 , H04N9/835 , H04N9/85 , H04N9/491
CPC分类号： H04N9/797 , H04N9/835
摘要： A method and apparatus for developing a compressed bandwidth frequency modulation signal format to increase the playing time per side of a videodisc by compressing the signal bandwidth of the recorded information preferably by a factor of two. Method and apparatus are described and shown for modulating a carrier signal with a color video signal, modulating a subcarrier frequency with at least one audio frequency signal, selecting the carrier and subcarrier frequencies such that the upper frequency deviation limit of the frequency modulated carrier signal is lower than the useful upper frequency limit of the recording medium chosen for the disc, and such that there is no overlap of the chroma baseband signal and the second order chroma sideband. At least one audio subcarrier frequency is located between the first order chroma sideband and the chroma baseband signal, or between the chroma baseband signal and the second order chroma sideband, or between the second order chroma sideband and DC. Preferably, the maximum FM carrier frequency, the blanking level FM carrier frequency, the white level FM carrier frequency, and the horizontal sync tip FM carrier frequency are all one-half the respective frequencies of a full-luminance/full-color carrier signal.
摘要翻译：一种用于开发压缩带宽频率调制信号格式的方法和装置，以通过压缩记录信息的信号带宽来提高每个视盘的每一方的播放时间，优选地为2倍。描述和示出了用彩色视频信号调制载波信号的方法和装置，用至少一个音频信号调制子载波频率，选择载波和子载波频率，使得频率调制载波信号的上限频率偏差为低于为盘选择的记录介质的有用的上限频率，并且使得色度基带信号和第二级色度边带没有重叠。至少一个音频副载波频率位于第一级色度边带和色度基带信号之间，或位于色度基带信号和第二级色度边带之间，或位于第二级色度边带与DC之间。优选地，最大FM载波频率，消隐电平FM载波频率，白电平FM载波频率和水平同步提前FM载波频率都是全亮度/全色载波信号的相应频率的一半。

49. 发明授权

US4490748A Method and apparatus for one line dropout compensation of color television signals 失效
标题翻译：一种彩色电视信号线路压差补偿方法和装置
公开(公告)号：US4490748A
公开(公告)日：1984-12-25
申请号：US463181
申请日：1983-02-03
申请人： Bantval Y. Kamath
发明人： Bantval Y. Kamath
IPC分类号： H04N9/882 , H04N9/491 , H04N5/94
CPC分类号： H04N9/882
摘要： A method and apparatus for dropout compensation of composite color television signals is described in which both the luminance and chrominance components forming a dropout compensation signal are derived from the same portion of the original color television information signal without dropouts immediately preceding the dropout. One horizontal line of the color television signal without dropouts is continuously stored in a memory. When a dropout occurs, the stored television signal line is circulated in the memory. The length of delay of the chrominance component of the stored television signal is controlled from line to line in response to the phase of the color burst synchronizing component of the color television signal being compensated for dropouts. The length of delay of the luminance component of the stored television signal is controlled on consecutive lines in response to the horizontal line synchronizing component of the color television signal being compensated for dropouts. The respectively delayed chrominance and luminance components are combined to form a composite dropout compensation signal which is inserted in the original color television signal in place of a detected dropout.
摘要翻译：描述了一种用于复合彩色电视信号的压差补偿的方法和装置，其中形成压差补偿信号的亮度和色度分量都是从原始彩色电视信息信号的相同部分导出的，而不存在紧接在丢失之前的丢失。没有丢失的彩色电视信号的一条水平线被连续地存储在存储器中。当发生压差时，存储的电视信号线在存储器中循环。响应于彩色电视信号的色同步分量的相位被补偿的丢失，所存储的电视信号的色度分量的延迟的长度被一行一行地控制。响应于彩色电视信号的水平线同步分量被补偿的丢失，所连接的电视信号的亮度分量的延迟长度被控制在连续的行上。分别延迟的色度和亮度分量被组合以形成复合压差补偿信号，其被插入到原始彩色电视信号中以代替检测到的丢失。

50. 发明授权

US4473849A System and apparatus for conversion of video signals to film images 失效
标题翻译：用于将视频信号转换成电影图像的系统和装置
公开(公告)号：US4473849A
公开(公告)日：1984-09-25
申请号：US333120
申请日：1981-12-21
申请人： John K. Cool
发明人： John K. Cool
IPC分类号： H04N5/84 , H04N1/40 , H04N1/407 , H04N1/60 , H04N9/491
CPC分类号： H04N1/6027 , H04N1/40025 , H04N1/407 , H04N1/4076
摘要： Gamma correction in an imaging system which provides photographic reproductions of images represented by video signals is achieved by controlling the duration of exposure of a constant intensity scanning beam. A moving threshold signal is swept at a varying rate corresponding to a gamma correction curve between opposite limits over a given total exposure interval, as the image is repeatedly presented. The instantaneous amplitude of the video signal is compared to threshold signal and the results of the comparison used to control whether the beam is on or off for a given picture area. The gamma correction curves are advantageously presented as numerical sequences defining interlinked incremental segments of different slope.
摘要翻译：通过控制恒定强度扫描光束的曝光持续时间来实现提供由视频信号表示的图像的照相再现的成像系统中的伽马校正。随着重复呈现图像，移动阈值信号以对应于给定总曝光间隔的相反极限之间的伽马校正曲线的变化速率扫描。将视频信号的瞬时幅度与阈值信号进行比较，并且比较结果用于控制给定图像区域的光束是打开还是关闭。伽马校正曲线有利地表示为定义不同斜率的互连增量段的数字序列。

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