公开(公告)号：US5210618A

公开(公告)日：1993-05-11

申请号：US741971

申请日：1991-08-06

申请人： Gerard De Haan

发明人： Gerard De Haan

IPC分类号： G11B15/14 ,  H04N5/7826 ,  H04N9/81

CPC分类号： H04N9/81 ,  G11B15/14 ,  H04N5/78266

摘要： When, for example, MAC (multiplexed analog components) signals (inter alia C-MAC or D2-MAC signals) are recorded directly on a video recorder and no special steps are taken, information will be lost as a result of the change-over from recording by one write head to recording by another write head. The relevant signals to be recorded include a sequence of lines with a first signal block containing a line-synchronizing signal and at least one additional signal, and a second signal block containing the chrominance luminance information of the video signal. Specific first signal blocks or at least the additional signals of these first signal blocks are accommodated in a second signal block of a non-relevant video line and are subsequently recorded on the record carrier. After the relevant second signal block has been read from the record carrier, the relevant first signal blocks, or at least the additional signals of these first signal blocks, are extracted from the second signal block and re-inserted into the data stream of first signal blocks at their original locations. The relevant first signal blocks may be those first signal blocks during which the heads are switched or may be other (subsequent, with respect to time) first signal blocks which can no longer be inserted into the data stream of the first signal blocks because these first signal blocks, during which head switching is effected, have been repeated earlier in the data stream.

摘要翻译： 例如，当将MAC（复用的模拟分量）信号（尤其是C-MAC或D2-MAC信号）直接记录在录像机上并且不采取特殊步骤时，作为转换的结果将丢失信息 从一个写头记录到另一个写头的记录。 要记录的相关信号包括具有包含行同步信号和至少一个附加信号的第一信号块的行序列，以及包含视频信号的色度亮度信息的第二信号块。 特定的第一信号块或这些第一信号块的至少附加信号被容纳在非相关视频行的第二信号块中，并且随后被记录在记录载体上。 在从记录载体读取相关的第二信号块之后，从第二信号块中提取相关的第一信号块或至少这些第一信号块的附加信号，并将其重新插入到第一信号的数据流中 在原始位置封锁。 相关的第一信号块可以是这样的第一信号块，在这些第一信号块期间磁头被切换，或者可以是其他（随后的，相对于时间）第一信号块，其不能再被插入到第一信号块的数据流中，因为这些第一信号块 在数据流期间已经重复了在其中实现头切换的信号块。

公开(公告)号：US5175630A

公开(公告)日：1992-12-29

申请号：US531381

申请日：1990-06-01

申请人： Toshiaki Tabuchi ,  Kyoji Kasuga ,  Michiyuki Sugino ,  Takayoshi Yamaguchi

发明人： Toshiaki Tabuchi ,  Kyoji Kasuga ,  Michiyuki Sugino ,  Takayoshi Yamaguchi

IPC分类号： H04N5/7826 ,  G11B5/008 ,  H04N5/783 ,  H04N9/797 ,  H04N9/81

CPC分类号： H04N9/81 ,  H04N9/7973

摘要： An apparatus for selectively recording a baseband signal and a MUSE signal on a magnetic tape and for reproducing them at different speeds including: a magnetic head circuit having first and second groups of heads provided separately form each other. Each of the head groups includes four rotary heads for consecutively and helically scanning the tape to record and reproduce the baseband and MUSE signals. The apparatus further includes: an apparatus for providing a mode designating signal for designating an operational mode of the apparatus; a signal processing circuit which can process the baseband and MUSE signals, in response to the mode designating signal, for processing one of the baseband and MUSE signals; a head switching circuit for switching the connection between the signal processing circuit and the respective rotary heads in response to the mode designating signal; and a scanning speed adjusting circuit for adjusting the relative scanning speed of the rotary head and the recording tape in response to the mode designating signal. The apparatus can appropriately switch the scanning speed and the connection between the rotary heads and the signal processing circuit according to the type of signal and operational mode. Thus, the baseband signal is recorded as a two channel signal on the magnetic tape and the MUSE signal is recorded as a one channel signal. Also, the apparatus can reproduce the baseband and MUSE signals recorded according to the above-described track pattern at a different speeds, respectively.

公开(公告)号：US4972335A

公开(公告)日：1990-11-20

申请号：US298898

申请日：1989-01-19

申请人： Takashi Furuhata ,  Hiroaki Takahashi

发明人： Takashi Furuhata ,  Hiroaki Takahashi

IPC分类号： H04N5/92 ,  G11B20/02 ,  H04N5/7826 ,  H04N9/81

CPC分类号： H04N5/78266 ,  H04N9/81

摘要： Video signals within one vertical scanning period are divided into a plurality of line block signals. These line block signals are shifted on time base, and a redundant interval (.tau..sub.H) is formed between two line block signals. Further, a plurality of segment signals, each of which includes a plurality of line block signals, are formed. A redundant interval (.tau..sub.S) is formed between two segment signals. The interval of the vertical blanking signal is shortened. Recorded video signals comprise the redundant intervals (.tau..sub.S) and the segment signals including the redundant intervals (.tau..sub.H) and the line block signals. A horizontal synchronizing signal of negative polarity, for example, is added in the redundant interval (.tau..sub.H). Magnetic heads are switched in the redundant interval (.tau..sub.S).

摘要翻译： 在一个垂直扫描周期内的视频信号被分成多个行块信号。 这些线路块信号在时基上移位，并且在两个线路块信号之间形成冗余间隔（τH）。 此外，形成多个段信号，每个段信号包括多个行块信号。 在两个段信号之间形成冗余间隔（τS）。 垂直消隐信号的间隔缩短。 记录的视频信号包括冗余间隔（τS）和包括冗余间隔（tau H）和行块信号的段信号。 例如，在冗余间隔（τH）中添加负极性的水平同步信号。 磁头在冗余间隔（tau S）中切换。

公开(公告)号：US4875105A

公开(公告)日：1989-10-17

申请号：US144591

申请日：1988-01-07

申请人： Kazuhito Ohashi

发明人： Kazuhito Ohashi

IPC分类号： H04N5/77 ,  H04N9/81

CPC分类号： H04N9/81 ,  H04N5/77

摘要： A video signal processing device comprises a pulse generating circuit arranged to produce reading pulses for a given first period of time within one horizontal scanning period and to be in repose for the remaining second period of time; a signal processing circuit arranged to introduce a video signal read out from an image sensor according to the reading pulses and to form first and second video signals; a memory arranged to store the second video signal; and a change-over circuit for producing the first video signal from the signal processing circuit during the first period and the second video signal from the memory during the second period.

摘要翻译： 视频信号处理装置包括脉冲发生电路，其布置成在一个水平扫描周期内产生给定的第一时间段的读取脉冲，并且在剩余的第二时间段内处于休眠状态; 信号处理电路，被配置为根据读取脉冲引入从图像传感器读出的视频信号，并形成第一和第二视频信号; 布置成存储第二视频信号的存储器; 以及用于在第一周期期间从信号处理电路产生第一视频信号的转换电路和在第二周期期间来自存储器的第二视频信号。

公开(公告)号：US4864424A

公开(公告)日：1989-09-05

申请号：US947414

申请日：1986-12-24

申请人： Atsuo Ochi ,  Masaaki Kobayashi ,  Akihiro Takeuchi ,  Kazuhiro Yamanishi

发明人： Atsuo Ochi ,  Masaaki Kobayashi ,  Akihiro Takeuchi ,  Kazuhiro Yamanishi

IPC分类号： H04N9/86 ,  H04N5/76 ,  H04N9/79 ,  H04N9/81 ,  H04N9/825

CPC分类号： H04N9/81 ,  H04N9/825

摘要： In a video signal recording/reproducing apparatus for recording and reproducing two-channel component signals, input two-channel component signals are processed separately from each other by two recording signal processing circuits to be recordable two-channel component signals. The recordable two-channel component signals are exchanged at predetermined intervals by a first switching circuit to be two combined signal each containing the recordable two-channel component signals which appear at periods corresponding to the exchanging invervals. The two combined signals are recorded on a recording medium via recording heads and reproduced from the recording medium via reproducing heads. The reproduced two combined signals are exchanged at the predetermined intervals by a second switching circuit to be the recordable two-channel component signals, which are thereafter processed separately from each other by two reproduced signal processing circuit to be the original two-channel component signals.

摘要翻译： 在用于记录和再现双通道分量信号的视频信号记录/再现装置中，通过两个记录信号处理电路将输入的双通道分量信号彼此分开处理，以便可记录双通道分量信号。 可记录的双通道分量信号由预定的间隔由第一切换电路交换为两个组合信号，每个组合信号包含出现在对应于交换反相器的周期的可记录的双通道分量信号。 两个组合的信号通过记录头记录在记录介质上，并通过再现头从记录介质再现。 再现的两个组合信号由第二切换电路以预定的间隔交换成可记录的双通道分量信号，然后由两个再现信号处理电路彼此分离成为原始双通道分量信号。

公开(公告)号：US4794464A

公开(公告)日：1988-12-27

申请号：US902821

申请日：1986-09-02

申请人： Steven J. Sasson

发明人： Steven J. Sasson

IPC分类号： H04N5/907 ,  H04N9/81 ,  H04N9/896

CPC分类号： H04N9/896 ,  H04N5/907 ,  H04N9/81

摘要： A video signal is time division multiplexed prior to recording using a time base compression device including a random access memory, instead of serial shift registers or the like. Large time base errors in the incoming video signal are accommodated without creating conflicts between memory read and write operations of successive video lines and without requiring a spare memory. Instead, the time compression random access memory has dual data ports, and successive video lines are loaded into and unloaded out of different locations in the random access memory simultaneously through different ports at different data rates to achieve the requisite time compression. As a result, the usual requirement to route incoming video signals to a spare memory in case of a time base error, for avoiding memory read and write conflicts, is eliminated by the invention.

摘要翻译： 在使用包括随机存取存储器的时基压缩装置记录之前，视频信号被时分复用，而不是串行移位寄存器等。 容纳输入视频信号中的大时基错误，而不会在连续视频行的存储器读和写操作之间产生冲突，而不需要备用存储器。 相反，时间压缩随机存取存储器具有双数据端口，并且连续的视频行通过不同数据速率的不同端口同时加载到随机存取存储器中的不同位置并从其中卸载，以实现必要的时间压缩。 因此，本发明消除了在时基错误的情况下将输入视频信号路由到备用存储器以避免存储器读写冲突的通常要求。

公开(公告)号：US4779143A

公开(公告)日：1988-10-18

申请号：US930564

申请日：1986-11-14

申请人： Masao Oku ,  Isao Saito

发明人： Masao Oku ,  Isao Saito

IPC分类号： H04N9/825 ,  H04N9/81 ,  H04N9/89

CPC分类号： H04N9/825

摘要： A luminance signal Y and two color difference signals (R-Y), (B-Y) are separated from a color video signal. A color difference time division multiplex (TDM) signal is produced from the two color difference signals by a time base compression and time base multiplexing. A burst signal is added on the luminance signal and the color difference TDM signal as a time base information. The color difference TDM signal is recorded on an inner area of a disc. The luminance signal which has a wide signal band is recorded on an outer area of a disc which has a good frequency response characteristic. By separate recording of the two kinds of signals, a high resolution is obtained.

摘要翻译： 亮度信号Y和两个色差信号（R-Y），（B-Y）与彩色视频信号分离。 通过时基压缩和时基复用从两个色差信号产生色差时分复用（TDM）信号。 在亮度信号和色差TDM信号上添加突发信号作为时基信息。 色差TDM信号被记录在盘的内部区域上。 具有宽信号频带的亮度信号被记录在具有良好频率响应特性的盘的外部区域上。 通过分开记录两种信号，可以获得高分辨率。

公开(公告)号：US4761690A

公开(公告)日：1988-08-02

申请号：US902957

申请日：1986-09-02

申请人： Kazuhiro Yamanishi ,  Masaaki Kobayashi ,  Akihiro Takeuchi ,  Atsuo Ochi ,  Yoshitomi Nagaoka

发明人： Kazuhiro Yamanishi ,  Masaaki Kobayashi ,  Akihiro Takeuchi ,  Atsuo Ochi ,  Yoshitomi Nagaoka

IPC分类号： H04N5/7826 ,  H04N9/81 ,  H04N9/86 ,  H04N9/79 ,  H04N9/84

CPC分类号： H04N5/78263 ,  H04N9/81 ,  H04N9/86

摘要： A video tape recorder which records video signals on a magnetic tape in such a manner that a first signal having luminance information and a second signal having chrominance information are recorded alternately on each track and the first signal recorded on each track is adjacent to the first signal recorded on an adjacent track and the second signal recorded on each track is adjacent to the second signal recorded on the adjacent track. The first signal and the second signal are exchanged every predetermined period L to obtain two combined signals each composed of the first and second signals which occur alternately at intervals of the predetermined period L.

摘要翻译： 一种将磁带上的视频信号以具有亮度信息的第一信号和具有色度信息的第二信号的方式记录在每个磁道上并且记录在每个磁道上的第一信号与第一信号相邻的磁带录像机 记录在相邻轨道上并且记录在每个轨道上的第二信号与记录在相邻轨道上的第二信号相邻。 第一信号和第二信号在每个预定周期L进行交换以获得两个组合信号，每个组合信号由预定周期L间隔交替出现的第一和第二信号组成。

公开(公告)号：US4758898A

公开(公告)日：1988-07-19

申请号：US759972

申请日：1985-07-29

申请人： Kouji Itou ,  Kazuo Shimomura

发明人： Kouji Itou ,  Kazuo Shimomura

IPC分类号： H04N9/81 ,  H04N9/89

CPC分类号： H04N9/81

摘要： The present invention relates to a color difference signal processing circuit of a video tape recorder (VTR) by a timeplex system. The hue of the picture face is adapted not to change with variation in amplitude and variation in DC level during the reproduction of the tape recorded by the VTR.

摘要翻译： 本发明涉及一种由Timeplex系统的录像机（VTR）的色差信号处理电路。 在由VTR记录的磁带的再现期间，图像的色调适应不随着幅度的变化和DC电平的变化而改变。

公开(公告)号：US4714965A

公开(公告)日：1987-12-22

申请号：US807745

申请日：1985-12-11

申请人： Tadaaki Yoshinaka ,  Takao Inoue ,  Kazuo Tomita

发明人： Tadaaki Yoshinaka ,  Takao Inoue ,  Kazuo Tomita

IPC分类号： H04N5/956 ,  H04N5/95 ,  H04N9/81 ,  H04N9/86 ,  H04N9/89 ,  H04N9/896 ,  H04N5/78 ,  H04N5/85

CPC分类号： H04N9/896

摘要： In a time base corrector for correcting time base fluctuations of signals reproduced from a record medium, on which a plurality of time-compressed component signals occurring within one horizontal period in a predetermined sequential order are recorded in response to a clock signal with a predetermined frequency, a write clock pulse generator used in the time base corrector includes a phase shifter for shifting the phase of an incoming write clock signal, whereby the write clock signal having a frequency different from the predetermined frequency is generated in response to a horizontal synchronizing signal, the start time of each of the plurality of reproduced component signals is detected and the shifting amount of the write clock signal by the phase shifter is switched in accordance with the detected output so as to synchronize the write clock signal with the start time of each of the reproduced component signal.

摘要翻译： 在用于校正从记录介质再现的信号的时基波动的时基校正器中，响应于具有预定频率的时钟信号来记录以预定顺序次序在一个水平周期内出现的多个时间压缩分量信号 在时基校正器中使用的写时钟脉冲发生器包括用于移位输入写时钟信号的相位的移相器，由此响应于水平同步信号产生具有与预定频率不同的频率的写时钟信号， 检测多个再现分量信号中的每一个的开始时间，并且根据检测到的输出切换由移相器写入的时钟信号的移位量，以使写入时钟信号与每个的时钟信号的开始时间同步 再现的分量信号。