-
公开(公告)号：EP0696143B1
公开(公告)日：2002-01-09
申请号：EP95116330.2
申请日：1991-08-09
发明人： Strolle, Christopher H. , Patel, Chandrakant B. , Wedam, Werner F. , Ko, Jung-Wan , Schnitzler, Raymond , Yun, Jong-Kyung
IPC分类号： H04N9/79
CPC分类号： H04N9/835 , H04N9/7976 , H04N9/80 , H04N9/8205 , H04N9/831 , H04N9/898
-
2.发明公开Playback equalising circuit for a digital magnetic reproducing apparatus 失效Enzerrerschaltung an der Wiedergabeseite eins digitales magnetischesWiedergabegerät。
公开(公告)号：EP0542540A2
公开(公告)日：1993-05-19
申请号：EP92310326.1
申请日：1992-11-12
发明人： Yun, Jong-Kyung
摘要： A playback equalizing circuit of a digital magnetic recording and reproducing apparatus includes a signal processing unit 50 for equalizing, delaying and waveform-shaping a signal picked-up from a magnetic tape 10 via a playback head 11, a signal outputting unit 60 for comparing a signal processed in the signal processing unit 50 and a predetermined reference signal and outputting the comparison, and a reference signal controlling unit 70 for responding to the level of the picked-up signal and controlling the reference signal in a variable-speed playback mode. The circuit responses to the level variation of a playback signal during special reproduction modes and controls the reference voltage. In addition, an AGC circuit responding to the envelope of the reproduction signal is disclosed.
摘要翻译： 本发明涉及一种数字磁记录和再现装置的重放均衡电路，包括：信号处理单元50，用于对通过重放头11从磁带10拾取的信号进行均衡，延迟和波形整形;信号输出单元 60，用于比较在信号处理单元50中处理的信号和预定的参考信号并输出比较;以及参考信号控制单元70，用于响应于拾取信号的电平并以可变速度控制参考信号 播放模式。 电路响应于重放信号的电平变化并且控制参考电压以改善在诸如高速搜索的可变速度再现期间的重放特性。
-
公开(公告)号：EP0471517B1
公开(公告)日：1996-11-20
申请号：EP91307342.5
申请日：1991-08-09
发明人： Strolle, Christopher H. , Patel, Chandrakant B. , Wedam, Werner F. , Ko, Jung-Wan , Schnitzler, Raymond , Yun, Jong-Kyung
IPC分类号： H04N9/79
CPC分类号： H04N9/835 , H04N9/7976 , H04N9/80 , H04N9/8205 , H04N9/831 , H04N9/898
-
公开(公告)号：EP0471517A3
公开(公告)日：1993-03-17
申请号：EP91307342.5
申请日：1991-08-09
发明人： Strolle, Christopher H. , Patel, Chandrakant B. , Wedam, Werner F. , Ko, Jung-Wan , Schnitzler, Raymond , Yun, Jong-Kyung
IPC分类号： H04N9/79
CPC分类号： H04N9/835 , H04N9/7976 , H04N9/80 , H04N9/8205 , H04N9/831 , H04N9/898
摘要： An improved video signal recording system for recording a full bandwidth video signal on a limited bandwidth medium includes an encoder 10, coupled to an input terminal 5, for adaptively processing a composite video signal in response to a motion representative signal, and producing two signals; a luminance signal Lr, 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 C+Mr including a chrominance and a motion component. Luminance signal recording circuitry 20 records the folded luminance signal on the medium, and chrominance signal recording circuitry 30 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 60 for retrieving the prerecorded luminance signal Lpb from the medium, and a chrominance signal playback circuit 80 for retrieving the prerecorded combined chrominance and motion signal C+M from the medium. A decoder 70 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 objectionable artifacts in the reproduced image.
-
5.发明授权
-
6.发明公开
公开(公告)号：EP0696143A1
公开(公告)日：1996-02-07
申请号：EP95116330.2
申请日：1991-08-09
发明人： Strolle, Christopher H. , Patel, Chandrakant B. , Wedam, Werner F. , Ko, Jung-Wan , Schnitzler, Raymond , Yun, Jong-Kyung
IPC分类号： H04N9/79
CPC分类号： H04N9/835 , H04N9/7976 , H04N9/80 , H04N9/8205 , H04N9/831 , H04N9/898
摘要： An improved video signal recording system for recording a full bandwidth video signal on a limited bandwidth medium includes an encoder 10, coupled to an input terminal 5, for adaptively processing a composite video signal in response to a motion representative signal, and producing two signals; a luminance signal L f , 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 C+M r including a chrominance and a motion component. Luminance signal recording circuitry 20 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 60 for retrieving the prerecorded luminance signal L pb from the medium, and a chrominance signal playback circuit 80 for retrieving the prerecorded combined chrominance and motion signal C+M from the medium. A decoder 70 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 objectionable artifacts in the reproduced image.
摘要翻译： 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包括耦合到输入端5的编码器10，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; 具有被衰减的高频的亮度信号Lf被采样以被折叠成低频中的频谱孔，并且被带宽限制到记录介质的有限带宽，并且包括色度和运动的组合信号C + 零件。 亮度信号记录电路20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。 回放系统包括用于从介质中检索预先记录的亮度信号Lpb的亮度信号重放电路60和用于从介质中检索预先记录的组合色度和运动信号C + M的色度信号重放电路80。 解码器70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被再现，而不会在再现的图像中产生不良的伪影。
-
7.发明公开
公开(公告)号：EP0542540A3
公开(公告)日：1994-05-18
申请号：EP92310326.1
申请日：1992-11-12
发明人： Yun, Jong-Kyung
摘要： A playback equalizing circuit of a digital magnetic recording and reproducing apparatus includes a signal processing unit 50 for equalizing, delaying and waveform-shaping a signal picked-up from a magnetic tape 10 via a playback head 11, a signal outputting unit 60 for comparing a signal processed in the signal processing unit 50 and a predetermined reference signal and outputting the comparison, and a reference signal controlling unit 70 for responding to the level of the picked-up signal and controlling the reference signal in a variable-speed playback mode. The circuit responses to the level variation of a playback signal during special reproduction modes and controls the reference voltage. In addition, an AGC circuit responding to the envelope of the reproduction signal is disclosed.
-
8.发明公开Video signal recording and/or reproducing systems 失效Aufzeichnungs- und Wiedergabesystemfürein Videosignal。
公开(公告)号：EP0471517A2
公开(公告)日：1992-02-19
申请号：EP91307342.5
申请日：1991-08-09
发明人： Strolle, Christopher H. , Patel, Chandrakant B. , Wedam, Werner F. , Ko, Jung-Wan , Schnitzler, Raymond , Yun, Jong-Kyung
IPC分类号： H04N9/79
CPC分类号： H04N9/835 , H04N9/7976 , H04N9/80 , H04N9/8205 , H04N9/831 , H04N9/898
摘要： An improved video signal recording system for recording a full bandwidth video signal on a limited bandwidth medium includes an encoder 10, coupled to an input terminal 5, for adaptively processing a composite video signal in response to a motion representative signal, and producing two signals; a luminance signal Lr, 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 C+Mr including a chrominance and a motion component. Luminance signal recording circuitry 20 records the folded luminance signal on the medium, and chrominance signal recording circuitry 30 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 60 for retrieving the prerecorded luminance signal Lpb from the medium, and a chrominance signal playback circuit 80 for retrieving the prerecorded combined chrominance and motion signal C+M from the medium. A decoder 70 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 objectionable artifacts in the reproduced image.
摘要翻译： 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包括耦合到输入端5的编码器10，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; 具有被衰减的高频的亮度信号Lr被采样以被折叠成低频中的频谱孔，并且被带宽限制到记录介质的有限带宽，以及包括色度和运动的组合信号C + 零件。 亮度信号记录电路20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。 回放系统包括用于从介质中检索预先记录的亮度信号Lpb的亮度信号重放电路60和用于从介质中检索预先记录的组合色度和运动信号C + M的色度信号重放电路80。 解码器70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被再现，而不会在再现的图像中产生不良的伪影。
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.011 秒)
