公开(公告)号：US5596418A

公开(公告)日：1997-01-21

申请号：US478766

申请日：1995-06-07

申请人： Christopher H. Strolle ,  Allen L. Limberg ,  Werner F. Wedam ,  Raymond Schnitzler ,  Hermann J. Weckenbrock ,  Jung W. Ko ,  Jong K. Yun

发明人： Christopher H. Strolle ,  Allen L. Limberg ,  Werner F. Wedam ,  Raymond Schnitzler ,  Hermann J. Weckenbrock ,  Jung W. Ko ,  Jong K. Yun

IPC分类号： H04N5/923 ,  H04N9/797 ,  H04N9/80 ,  H04N9/82 ,  H04N9/898 ,  H04N9/79

CPC分类号： H04N5/923 ,  H04N9/7976 ,  H04N9/80 ,  H04N9/8205 ,  H04N9/898

摘要： A system for reproducing a luminance signal from a medium containing a previously recorded luminance signal with a high-frequency portion thereof compressed in dynamic range includes a circuit for recovering that luminance signal from the medium. Filtering is done to separate the low-frequency and compressed-in-dynamic-range high-frequency portions of the recovered luminance signal from each other. A corer responds to the separated compressed-in-dynamic-range high-frequency portion of the recovered luminance signal to provide a cored high-frequency portion with expanded dynamic range and reduced noise. The level of the cored high-frequency portion with expanded dynamic range and reduced noise is then boosted by a predetermined amount to compensate for energy losses during the compression of the dynamic range and added back to the low-frequency portion of the recovered luminance signal to reproduce a full-band luminance signal with at least partially restored dynamic range for high-frequencies and without readily visible high-frequency noise.

摘要翻译： 一种用于从包含先前记录的亮度信号的介质再现亮度信号的系统，其中其高频部分在动态范围内被压缩，包括用于从介质中恢复该亮度信号的电路。 完成滤波以将恢复的亮度信号的低频和压缩在动态范围的高频部分彼此分离。 核心部分对恢复的亮度信号的分离压缩在动态范围高频部分进行响应，以提供具有扩展的动态范围和降低的噪声的核心高频部分。 然后将具有扩大的动态范围和降低的噪声的核心高频部分的电平提升预定量，以补偿在动态范围的压缩期间的能量损失，并将其恢复到恢复的亮度信号的低频部分， 再现具有用于高频的至少部分恢复的动态范围的全频带亮度信号，并且没有容易看到的高频噪声。

公开(公告)号：US5500739A

公开(公告)日：1996-03-19

申请号：US59765

申请日：1993-05-11

申请人： Christopher H. Strolle ,  Chandrakant B. Patel ,  Werner F. Wedam ,  Raymond Schnitzler ,  Hermann J. Weckenbrock ,  Jung-Wan Ko ,  Jong-Kwung Yun ,  Allen L. Limberg

发明人： Christopher H. Strolle ,  Chandrakant B. Patel ,  Werner F. Wedam ,  Raymond Schnitzler ,  Hermann J. Weckenbrock ,  Jung-Wan Ko ,  Jong-Kwung Yun ,  Allen L. Limberg

IPC分类号： H04N9/80 ,  H04N9/82 ,  H04N9/835 ,  H04N9/79

CPC分类号： H04N9/835 ,  H04N9/80 ,  H04N9/8205

摘要： A frequency-multiplexed video signal is generated in which a color-under signal and a second under signal are linearly combined with at least partially overlapping frequency spectra to form a composite under signal for an FM luma signal. The frequency-multiplexed video signal is suited for recording on magnetic tape using helical scanning methods and for being played back from the magnetic tape using helical scanning methods. The second under signal is generated in such way that line-comb filtering can be used during playback to separate color-under signal and second under signal each from the composite signal despite their frequency spectra being at least partially overlapping in the composite signal.

摘要翻译： 产生频率复用的视频信号，其中彩色信号和第二下信号与至少部分重叠的频谱线性组合以形成用于FM亮度信号的复合信号。 频率复用视频信号适用于使用螺旋扫描方法在磁带上进行记录，并且使用螺旋扫描方法从磁带重放。 第二下信号被生成为使得在重放期间可以使用线梳滤波来分离彩色信号和第二下信号，每个来自复合信号，尽管它们的频谱在复合信号中至少部分重叠。

公开(公告)号：US5113262A

公开(公告)日：1992-05-12

申请号：US569029

申请日：1990-08-17

申请人： Christopher H. Strolle ,  Chandrakant B. Patel ,  Werner F. Wedam ,  Jung W. Ko ,  Raymond Schnitzler ,  Jong K. Yun

发明人： Christopher H. Strolle ,  Chandrakant B. Patel ,  Werner F. Wedam ,  Jung W. Ko ,  Raymond Schnitzler ,  Jong K. Yun

IPC分类号： H04N9/797 ,  H04N9/80 ,  H04N9/82 ,  H04N9/898

CPC分类号： H04N9/8205 ,  H04N9/7976 ,  H04N9/80 ,  H04N9/898

摘要： An improved video signal recording system for recording a full bandwidth video signal on a limited bandwidth medium is disclosed. The recording system includes an encoder, coupled to an input terminal, for adaptively processing a composite video signal in response to a motion representative signal, and producing two signals; a luminance signal, having attenuated high frequencies subsampled so as to be folded into a spectral hole in the low frequencies, and being bandwidth limited to the limited bandwidth of the recording medium; and a combined signal including a chrominance and a motion component. Luminance signal recording circuitry records the folded luminance signal on the medium and chrominance signal recording circuitry records the combined chrominance and motion signal on the medium. An improved video signal playback system for reproducing such a prerecorded video signal is also disclosed. The playback system consists of a luminance signal playback circuit for retrieving the prerecorded luminance signal from the medium, and chrominance signal playback circuit for retrieving the prerecorded combined chrominance and motion signals from the medium. A decorder extracts the motion signal and the chrominance signal from the combined chrominance and motion signal and an unfolding circuit extracts the luminance high frequencies from the prerecorded folded luminance signal and adaptively regenerates the full bandwidth luminance signal in response to the motion signal. This regenerated full bandwidth luminance signal is combined with the chrominance signal to reproduce the originally recorded composite video signal. A recording medium previously recorded by such a recording system is capable of being played back on a standard playback system without objectionably artifacts in the reproduced image.

摘要翻译： 公开了一种用于在有限带宽介质上记录全带宽视频信号的改进的视频信号记录系统。 记录系统包括耦合到输入端的编码器，用于响应运动代表信号自适应地处理复合视频信号，并产生两个信号; 亮度信号，具有被衰减的高频，被采样以被折叠成低频中的频谱孔，并且带宽被限制到记录介质的有限带宽; 以及包括色度和运动分量的组合信号。 亮度信号记录电路将折叠的亮度信号记录在介质上，色度信号记录电路在介质上记录组合的色度和运动信号。 还公开了一种用于再现这种预先记录的视频信号的改进的视频信号播放系统。 播放系统由用于从介质中检索预先记录的亮度信号的亮度信号重放电路和用于从介质中检索预先记录的组合色度和运动信号的色度信号重放电路组成。 解码顺序从组合的色度和运动信号中提取运动信号和色度信号，展开电路从预先记录的折叠亮度信号中提取亮度高频，并根据运动信号自适应地再生全带宽亮度信号。 该再生的全带宽亮度信号与色度信号组合以再现原始记录的复合视频信号。 由这样的记录系统预先记录的记录介质能够在标准的回放系统上进行再现，而不会在再现的图像中产生不必要的伪影。

公开(公告)号：US06246827B1

公开(公告)日：2001-06-12

申请号：US08087362

申请日：1993-07-08

申请人： Christopher H. Strolle ,  Allen LeRoy Limberg ,  Werner F. Wedam ,  Raymond Schnitzler ,  Hermann J. Weckenbrock ,  Jung Wan Ko ,  Jong Kyung Yun

发明人： Christopher H. Strolle ,  Allen LeRoy Limberg ,  Werner F. Wedam ,  Raymond Schnitzler ,  Hermann J. Weckenbrock ,  Jung Wan Ko ,  Jong Kyung Yun

IPC分类号： H04N979

CPC分类号： H04N5/923 ,  H04N9/7976 ,  H04N9/80 ,  H04N9/8205 ,  H04N9/835 ,  H04N9/898

摘要： A system for reproducing a luminance signal from a medium containing a previously recorded luminance signal with a high-frequency portion thereof compressed in dynamic range includes a circuit for recovering that luminance signal from the medium. Filtering is done to separate the low-frequency and compressed-in-dynamic-range high-frequency portions of the recovered luminance signal from each other. A corer responds to the separated compressed-in-dynamic-range high-frequency portion of the recovered luminance signal to provide a cored high-frequency portion with expanded dynamic range and reduced noise. The level of the cored high-frequency portion with expanded dynamic range and reduced noise is then boosted by a predetermined amount to compensate for energy losses during the compression of the dynamic range and added back to the low-frequency portion of the recovered luminance signal to reproduce a full-band luminance signal with at least partially restored dynamic range for high-frequencies and without readily visible high-frequency noise.

摘要翻译： 一种用于从包含先前记录的亮度信号的介质再现亮度信号的系统，其中其高频部分在动态范围内被压缩，包括用于从介质中恢复该亮度信号的电路。 完成滤波以将恢复的亮度信号的低频和压缩在动态范围的高频部分彼此分离。 核心部分对恢复的亮度信号的分离压缩在动态范围高频部分进行响应，以提供具有扩展的动态范围和降低的噪声的核心高频部分。 然后将具有扩大的动态范围和降低的噪声的核心高频部分的电平提升预定量，以补偿在动态范围的压缩期间的能量损失，并将其恢复到恢复的亮度信号的低频部分， 再现具有用于高频的至少部分恢复的动态范围的全频带亮度信号，并且没有容易看到的高频噪声。

公开(公告)号：US5673355A

公开(公告)日：1997-09-30

申请号：US484707

申请日：1995-06-07

申请人： Christopher H. Strolle ,  Allen LeRoy Limberg ,  Werner F. Wedam ,  Raymond Schnitzler ,  Hermann J. Weckenbrock ,  Jung Wan Ko ,  Jong Kyung Yun

发明人： Christopher H. Strolle ,  Allen LeRoy Limberg ,  Werner F. Wedam ,  Raymond Schnitzler ,  Hermann J. Weckenbrock ,  Jung Wan Ko ,  Jong Kyung Yun

IPC分类号： H04N5/923 ,  H04N9/797 ,  H04N9/80 ,  H04N9/82 ,  H04N9/835 ,  H04N9/898 ,  H04N9/79

CPC分类号： H04N9/8205 ,  H04N5/923 ,  H04N9/7976 ,  H04N9/80 ,  H04N9/835 ,  H04N9/898

摘要： A system for reproducing a luminance signal from a medium containing a previously recorded luminance signal with a high-frequency portion thereof compressed in dynamic range includes a circuit for recovering that luminance signal from the medium. Filtering is done to separate the low-frequency and compressed-in-dynamic-range high-frequency portions of the recovered luminance signal from each other. A corer responds to the separated compressed-in-dynamic-range high-frequency portion of the recovered luminance signal to provide a cored high-frequency portion with expanded dynamic range and reduced noise. The level of the cored high-frequency portion with expanded dynamic range and reduced noise is then boosted by a predetermined amount to compensate for energy losses during the compression of the dynamic range and added back to the low-frequency portion of the recovered luminance signal to reproduce a full-band luminance signal with at least partially restored dynamic range for high-frequencies and without readily visible high-frequency noise.

摘要翻译： 一种用于从包含先前记录的亮度信号的介质再现亮度信号的系统，其中其高频部分在动态范围内被压缩，包括用于从介质中恢复该亮度信号的电路。 完成滤波以将恢复的亮度信号的低频和压缩在动态范围的高频部分彼此分离。 核心部分对恢复的亮度信号的分离压缩在动态范围高频部分进行响应，以提供具有扩展的动态范围和降低的噪声的核心高频部分。 然后将具有扩大的动态范围和降低的噪声的核心高频部分的电平提升预定量，以补偿在动态范围的压缩期间的能量损失，并将其恢复到恢复的亮度信号的低频部分， 再现具有用于高频的至少部分恢复的动态范围的全频带亮度信号，并且没有容易看到的高频噪声。

公开(公告)号：US6134373A

公开(公告)日：2000-10-17

申请号：US787690

申请日：1991-11-04

申请人： Christopher H. Strolle ,  Chandrakant B. Patel ,  Werner F. Wedam ,  Jung Wan Ko ,  Raymond Schnitzler ,  Jong Kyung Yun

发明人： Christopher H. Strolle ,  Chandrakant B. Patel ,  Werner F. Wedam ,  Jung Wan Ko ,  Raymond Schnitzler ,  Jong Kyung Yun

IPC分类号： H04N5/93 ,  H04N9/78 ,  H04N9/797 ,  H04N9/80 ,  H04N9/82 ,  H04N9/83 ,  H04N9/835 ,  H04N9/84 ,  H04N9/898 ,  H04N9/79

CPC分类号： H04N9/831 ,  H04N9/797 ,  H04N9/7976 ,  H04N9/80 ,  H04N9/8205 ,  H04N9/835 ,  H04N9/84 ,  H04N9/898

摘要： An encoder separates luminance and chrominance signal components of a composite video signal. The frame-to-frame changes in the luminance signal are detected, and a motion signal is derived therefrom. The higher frequency portion of the luminance signal is adaptively de-emphasized in amplitude and folded into the spectrum of the lower frequency portion of the luminance signal, to generate a folded-spectrum luminance signal for modulating the frequency of a luma carrier. In a combined signal, suitable for magnetic recording in accordance with a modified VHS standard, the chrominance signal is translated in frequency to generate a color-under signal in a frequency band below that occupied by the FM luma carrier. The de-emphasized higher frequency portion of the luminance signal, as folded into its lower frequency portion, and encoding of the motion signal onto vacant portions of the frequency band below that occupied by the FM luma carrier in such a magnetic recording facilitate its being compatibly reproduced by conventional VHS reproduction devices. In a wideband reproduction device a decoder demodulates the folded-spectrum luminance signal from the FM luma carrier, unfolds the lumininance signal, and reemphasizes the high frequencies of the unfolded luminance signal. The color-under signal is translated in frequency to regenerate chrominance signal combined with the unfolded luminance signal with its high frequencies re-emphasized to their original amplitude, regenerating a composite signal descriptive of a full bandwidth image. The motion signal is utilized in the encoder for motion-adaptively pre-filtering the input luminance and is recovered in the decoder for motion-adaptively post-filtering the unfolded luminance.

摘要翻译： 编码器分离复合视频信号的亮度和色度信号分量。 检测亮度信号中的帧到帧的变化，并从中导出运动信号。 亮度信号的较高频率部分在幅度上自适应去强调，并折射成亮度信号的较低频率部分的频谱，以产生用于调制亮度载波频率的折射谱亮度信号。 在适合于根据修改的VHS标准的磁记录的组合信号中，色度信号被频率转换，以在低于由FM亮度载波占据的频带内产生下色信号。 亮度信号的去加重的较高频率部分被折叠成其较低频率部分，并且将运动信号编码到在这种磁记录中由FM亮度载波占据的频带以下的频带的空的部分上，便于其兼容 由常规VHS再现设备再现。 在宽带再现装置中，解码器解调来自FM亮度载波的折叠频谱亮度信号，展开亮度信号，并重新强调展开的亮度信号的高频。 彩色信号以频率转换以再现与展开的亮度信号组合的色度信号，其高频被再次强调到其原始幅度，再生描述全带宽图像的复合信号。 运动信号在编码器中用于对输入亮度进行运动自适应预滤波，并在解码器中恢复运动自适应地对展开后的亮度进行后置滤波。

公开(公告)号：US5532820A

公开(公告)日：1996-07-02

申请号：US819890

申请日：1992-01-13

申请人： Christopher H. Strolle ,  Hermann J. Weckenbrock

发明人： Christopher H. Strolle ,  Hermann J. Weckenbrock

IPC分类号： H04N5/93 ,  H04L27/00 ,  H04N5/76 ,  H04N5/92 ,  H04N7/12 ,  H04N9/78 ,  H04N9/797 ,  H04N9/80 ,  H04N9/82 ,  H04N9/83 ,  H04N9/835 ,  H04N9/84 ,  H04N9/898 ,  H04N9/79

CPC分类号： H04N9/7976 ,  H04N9/797 ,  H04N9/80 ,  H04N9/8205 ,  H04N9/831 ,  H04N9/835 ,  H04N9/84 ,  H04N9/898

摘要： Apparatus useful in electronics for the tape recording of a video signal, which is a baseband signal of a prescribed bandwidth extending up to a prescribed maximum frequency, processes the video signal to generate a folded-spectrum video signal. The video signal is digitized and supplied to a digital band-splitting filter with a cross-over frequency at one-half said prescribed maximum frequency, for separating the digitized video signal into samples of a lower-frequency-band component and into samples of a higher-frequency-band component. A balanced modulator is connected for modulating a folding carrier wave of the prescribed maximum frequency, which modulation is done in accordance with the higher-frequency-band component to generate a balanced modulation signal; and the balanced modulation signal is linearly combined with the lower-frequency-band component to generate the folded-spectrum video signal. Preferably, the sampling rate of the digitized video signal is exactly the Nyquist rate of the prescribed maximum frequency, reduces the balanced modulation of a suitably phased folding carrier wave to multiplication of successive samples of the modulating signal alternately by plus one and by minus one. Such multiplications are done without having to use a digital multiplier.

摘要翻译： 用于磁带记录视频信号的电子设备中的装置，该视频信号是延伸到规定的最大频率的规定带宽的基带信号，处理视频信号以产生折叠频谱视频信号。 视频信号被数字化并提供给具有交叉频率的规定最大频率的二分之一的数字频带分离滤波器，用于将数字化视频信号分离成低频带分量的采样，并将其转换为 较高频带分量。 连接平衡调制器来调制规定的最大频率的折叠载波，该调制根据较高频带分量进行，以产生平衡调制信号; 并且平衡调制信号与低频带分量线性组合以产生折叠频谱视频信号。 优选地，数字化视频信号的采样率恰好是规定的最大频率的奈奎斯特速率，将适当地相位的折叠载波的平衡调制减小到相加的调制信号的连续采样乘以加1和减1。 进行这种乘法而不必使用数字乘法器。

公开(公告)号：US5267035A

公开(公告)日：1993-11-30

申请号：US742764

申请日：1991-08-08

申请人： Hermann J. Weckenbrock ,  Christopher H. Strolle

发明人： Hermann J. Weckenbrock ,  Christopher H. Strolle

IPC分类号： H04N5/253 ,  H04N5/14 ,  H04N7/01 ,  H04N9/78 ,  H04N7/18

CPC分类号： H04N7/0112 ,  H04N5/144

摘要： A method and apparatus for detecting image motion in a television signal obtained by conversion of film images to a sequence of television video fields using the 2-3 film pulldown technique, comprising generating a plurality of interim motion detection signals which are always based upon a comparison of image points in the video signal which are spaced two sequential fields apart, and gating the plurality of interim motion detection signals together in order to generate a final motion detection signal.

摘要翻译： 一种用于检测通过使用2-3膜下拉技术将胶片图像转换成电视视频字段序列获得的电视信号中的图像运动的方法和装置，包括产生总是基于比较的多个临时运动检测信号 的视频信号中分离两个连续的场的图像点，并且将多个临时运动检测信号选通在一起以产生最终的运动检测信号。

公开(公告)号：US5576837A

公开(公告)日：1996-11-19

申请号：US296796

申请日：1994-08-26

申请人： Christopher H. Strolle ,  Hermann J. Weckenbrock

发明人： Christopher H. Strolle ,  Hermann J. Weckenbrock

IPC分类号： H04N5/93 ,  H04L27/00 ,  H04N5/76 ,  H04N5/92 ,  H04N7/12 ,  H04N9/78 ,  H04N9/797 ,  H04N9/80 ,  H04N9/82 ,  H04N9/83 ,  H04N9/835 ,  H04N9/84 ,  H04N9/898 ,  H04N9/79 ,  H04N11/02 ,  H04N11/04

CPC分类号： H04N9/7976 ,  H04N9/797 ,  H04N9/80 ,  H04N9/8205 ,  H04N9/831 ,  H04N9/835 ,  H04N9/84 ,  H04N9/898

摘要： Apparatus useful in electronics for the tape recording of a video signal, which is a baseband signal of a prescribed bandwidth extending up to a prescribed maximum frequency, processes the video signal to generate a folded-spectrum video signal. The video signal is digitized and supplied to a digital band-splitting filter with a cross-over frequency at one-half said prescribed maximum frequency, for separating the digitized video signal into samples of a lower-frequency-band component and into samples of a higher-frequency-band component. A balanced modulator is connected for modulating a folding carrier wave of the prescribed maximum frequency, which modulation is done in accordance with the higher-frequency-band component to generate a balanced modulation signal; and the balanced modulation signal is linearly combined with the lower-frequency-band component to generate the folded-spectrum video signal. Preferably, the sampling rate of the digitized video signal is exactly the Nyquist rate of the prescribed maximum frequency, reduces the balanced modulation of a suitably phased folding carrier wave to multiplication of successive samples of the modulating signal alternately by plus one and by minus one. Such multiplications are done without having to use a digital multiplier.

公开(公告)号：US06253022B1

公开(公告)日：2001-06-26

申请号：US09461206

申请日：1999-12-14

申请人： Christopher H. Strolle ,  Jung Wan Ko ,  Raymond Schnitzler

发明人： Christopher H. Strolle ,  Jung Wan Ko ,  Raymond Schnitzler

IPC分类号： H04N576

CPC分类号： H04N9/835 ,  H04N9/7976 ,  H04N9/80 ,  H04N9/8205 ,  H04N9/831 ,  H04N9/898

摘要： In video tape recording apparatus composite video signals are separated into their luminance and chrominance components for processing prior to recording. The luminance components are digitized, adaptively temporal and spatial filtered, and folded into a reduced frequency spectrum to generate a digital signal that is converted to analog form to modulate the frequency of the luminance carrier signal used in video tape recording. The chrominance components are converted to the color-under signals used in video tape recording. In video tape playback apparatus the color-under signals are converted up in frequency to provide chrominance components for inclusion in reproduced composite video signals. Also, in the video tape playback apparatus, the frequency modulation of the luminance carrier signal is detected to recover folded luminance signals which are digitized, time-base-corrected, unfolded, and adaptively temporal and spatial filtered to suppress aliases associated with unfolding to generate a digital signal that is converted to analog form to provide luminance components for inclusion in reproduced composite video signals. The backward compatability of the video tape recordings when playing them back in video tape playback apparatus already in the field is accommodated by de-emphasizing the high frequencies of the luma during recording. The high frequencies of the luma can be re-emphasized during playback to maintain substantially full NTSC or PAL luminance bandwidth.

摘要翻译： 在录像带记录装置中，复合视频信号被分离成它们的亮度和色度分量，以便在记录之前进行处理。 亮度分量被数字化，自适应地进行时间和空间滤波，并折叠成降频频谱，以产生转换为模拟形式的数字信号，以调制录像带中使用的亮度载波信号的频率。 色度分量被转换为录像带中使用的彩色信号。 在视频磁带播放装置中，彩色信号在频率上被转换，以提供色度分量以包括在再现的复合视频信号中。 此外，在视频磁带播放装置中，检测亮度载波信号的频率调制，以恢复经数字化，时基校正，解折叠的折叠亮度信号，并进行自适应时间和空间滤波，以抑制与展开相关的别名以产生 被转换为模拟形式以提供用于包含在再现的复合视频信号中的亮度分量的数字信号。 录像带录像的背面兼容性在已经在现场的录像带播放装置中播放回来时通过在记录期间强调亮度的高频来适应。 在重放期间可以重新强调亮度的高频，以保持基本上完整的NTSC或PAL亮度带宽。