公开(公告)号：US5303060A

公开(公告)日：1994-04-12

申请号：US25345

申请日：1993-03-03

申请人： Hiroshi Iwamura ,  Takehiko Shioda

发明人： Hiroshi Iwamura ,  Takehiko Shioda

IPC分类号： H04N5/92 ,  H04N9/797 ,  H04N9/80 ,  H04N9/81 ,  H04N9/79

CPC分类号： H04N9/797 ,  H04N9/81

摘要： An HDTV signal (dot density: 2N dots/line) is converted into a luminance signal and a line sequential color signal, and the resulting signals are both subjected to vertical interpolation and vertical filtering to derive a sequential scanning luminance signal and a sequential scanning color signal. The resulting sequential scanning luminance signal and sequential scanning color signal are subjected to frame thinning to reduce the frequency thereof to a half. Then, subsampling is performed to reduce the dot density to N dots/line. Next, dot rearranging for distributing adjacent dots to adjacent lines is performed to double the number of frames, whereby the dot density of each frame is reduced to N/2 dots/line. These consequently derived frames are encoded for recording. In this manner, the frequency bandwidth required to a recording medium for recording HDTV signals can be reduced.

摘要翻译： 将HDTV信号（点密度：2N点/线）转换为亮度信号和行顺序彩色信号，并且对所得到的信号进行垂直内插和垂直滤波以得到顺序扫描亮度信号和顺序扫描颜色 信号。 所得到的顺序扫描亮度信号和顺序扫描彩色信号经历帧间间隔以将其频率降低到一半。 然后，进行子采样以将点密度降低到N点/线。 接下来，执行用于将相邻点分布到相邻行的点重新排列以使帧的数量加倍，由此将每帧的点密度减小到N / 2个点/行。 这些因此导出的帧被编码用于记录。 以这种方式，可以减少用于记录HDTV信号的记录介质所需的频率带宽。

公开(公告)号：US5295024A

公开(公告)日：1994-03-15

申请号：US704385

申请日：1991-05-23

申请人： Makoto Adachi

发明人： Makoto Adachi

IPC分类号： H04N5/92 ,  H04N7/015 ,  H04N9/797 ,  H04N9/81 ,  H04N5/78

CPC分类号： H04N9/7973 ,  Y10S348/91

摘要： A video signal recording apparatus is provided with first and second channels for transmitting an input video signal. The first channel has a line memory for conducting a 1H delay on data and a time-base-extension line memory for conducting time base extension on the data with the 1H delay. The data subjected to the time base extension undergoes D/A conversion to be an output of the first channel. On the other hand, the second channel does not have a line memory for a 1H delay, and the video signal without delay is subjected, to time base extension and undergoes D/A conversion to be an output of the second channel. In the arrangement, odd lines and even lines respectively contained in adjoining two frames in each channel are reversed such that in a certain frame, odd lines of the input video signal are transmitted through the first channel with even lines through the second channel. In the next frame, even lines are transmitted through the first channel with odd lines through the second channel. Thus, influences on the reproduced picture due to the difference of circuit characteristics is averaged and the perception of unevenness of color or brightness is avoided.

摘要翻译： 视频信号记录装置具有用于发送输入视频信号的第一和第二信道。 第一通道具有用于在数据上进行1H延迟的行存储器和用于对1H延迟的数据进行时基扩展的时基扩展线存储器。 经过时基扩展的数据经历D / A转换为第一通道的输出。 另一方面，第二通道不具有用于1H延迟的行存储器，并且没有延迟的视频信号经受时基扩展，并且经历D / A转换为第二通道的输出。 在这种布置中，分别包含在每个通道中的相邻两个帧中的奇数行和偶数行被反转，使得在某个帧中，输入视频信号的奇数行通过第二通道的偶数行通过第一通道传输。 在下一帧中，偶数行通过第二通道以奇数行通过第一通道传输。 因此，由于电路特性的差异对再现图像的影响被平均化，并且避免了颜色或亮度不均匀的感觉。

公开(公告)号：US5283659A

公开(公告)日：1994-02-01

申请号：US686530

申请日：1991-04-17

申请人： Toru Akiyama ,  Yoshiyuki Okuda ,  Akihiro Tozaki ,  Motooki Sugihara

发明人： Toru Akiyama ,  Yoshiyuki Okuda ,  Akihiro Tozaki ,  Motooki Sugihara

IPC分类号： H04N9/804 ,  G11B19/12 ,  G11B27/00 ,  G11B27/024 ,  G11B27/028 ,  G11B27/10 ,  G11B27/28 ,  G11B27/32 ,  G11B27/36 ,  H04N7/015 ,  H04N9/793 ,  H04N9/797 ,  H04N9/80 ,  H04N9/808 ,  H04N9/81 ,  H04N9/815 ,  H04N9/82 ,  H04N9/877 ,  H04N9/79

CPC分类号： G11B27/28 ,  G11B19/12 ,  G11B27/002 ,  G11B27/028 ,  G11B27/105 ,  G11B27/329 ,  G11B27/36 ,  H04N9/793 ,  H04N9/7973 ,  H04N9/81 ,  H04N9/8222 ,  H04N9/877 ,  G11B2220/20 ,  G11B2220/2587 ,  G11B27/024

摘要： An apparatus in which a high vision signal having 1125 horizontal lines per frame is divided into three signals and three channel signals each having 375 horizontal lines per frame are obtained wherein the resultant three channel signals are time base expanded, three channel signals in a base band of 10 MHz are obtained, and the three channel signals are independently recorded onto a medium. A recording medium on which signals is recorded and processed by the above apparatus is provided.

摘要翻译： 其中每帧具有1125条水平线的高视觉信号被分成三个信号，每帧具有375个水平线的三个信道信号被获得，其中所得到的三个信道信号是时基扩展的，基带中的三个信道信号 的10MHz，并且三个信道信号被独立地记录在介质上。 提供了通过上述装置记录和处理信号的记录介质。

公开(公告)号：US5267023A

公开(公告)日：1993-11-30

申请号：US780719

申请日：1991-10-21

申请人： Somei Kawasaki

发明人： Somei Kawasaki

IPC分类号： H04N9/79 ,  G11B20/02 ,  H04N1/64 ,  H04N9/65 ,  H04N9/81 ,  H04N9/66

CPC分类号： H04N9/65 ,  H04N1/646 ,  H04N9/81

摘要： A signal processing device is arranged to form a first output modulated signal by modulating an input information signal in accordance with a modulation carrier signal, to form a second output modulated signal by modulating the first output modulated signal in accordance with a modulation carrier signal which is identical to the above-stated modulation carrier signal, and to correct the input information signal by using the second output modulated signal. The modulation circuit of the device is thus arranged to have a minimal amount of leakage of the modulation carrier signal for the information signal, so that the device can be easily arranged as an integrated circuit.

公开(公告)号：US5200833A

公开(公告)日：1993-04-06

申请号：US826396

申请日：1992-01-27

申请人： Yoshinori Suzuki ,  Yoshiyuki Suzuki ,  Kazuo Ido

发明人： Yoshinori Suzuki ,  Yoshiyuki Suzuki ,  Kazuo Ido

IPC分类号： H04N5/18 ,  H04N9/81 ,  H04N9/896

CPC分类号： H04N9/896 ,  H04N9/81

摘要： A signal level clamping apparatus for a CTDM video signal used for a time-base correction apparatus has a clamping circuit supplied with a reproduced color difference signal wherein, between adjacent two horizontal sync. signals, a first and second time-compressed color difference line signals are sequentially arranged with a predetermined interval therebetween, a time-base correction unit supplied with an output from the clamping circuit, a sync. signal separator circuit for separating a reproduced horizontal sync. signal from the reproduced color difference signal supplied thereto, a write clock signal generating circuit for generating a write clock signal synchronized with the reproduced horizontal sync. signal from the sync. signal separator circuit and for applying the write clock signal to the time-base correction unit, and a clamping pulse generating circuit for generating a clamping pulse synchronized with the reproduced horizontal sync. signal from the sync. signal separator circuit and for applying the clamping pulse to the clamping circuit, wherein, in response to the clamping pulse, the clamping circuit clamps a portion of a predetermined level within a space between the first and second time-compressed color difference line signals arranged between the adjacent horizontal sync. signals of the reproduced color difference signal is clamped.

摘要翻译： 用于时基校正装置的用于CTDM视频信号的信号电平钳位装置具有被提供有再现的色差信号的钳位电路，其中在相邻的两个水平同步之间。 信号，第一和第二时间压缩色差线信号以其间的预定间隔被顺序排列，提供有来自钳位电路的输出的时基校正单元，同步信号。 用于分离再现的水平同步信号分离电路。 来自所提供的再现色差信号的信号;写时钟信号发生电路，用于产生与再现的水平同步同步的写时钟信号。 来自同步信号。 信号分离器电路和用于将写入时钟信号施加到时基校正单元，以及钳位脉冲发生电路，用于产生与再现的水平同步同步的钳位脉冲。 来自同步信号。 信号分离器电路和用于将钳位脉冲施加到钳位电路，其中，响应于钳位脉冲，钳位电路将布置在第一和第二时间压缩色差线信号之间的空间内的预定水平的一部分夹持在 相邻的水平同步。 再现的色差信号的信号被钳位。

公开(公告)号：US5159461A

公开(公告)日：1992-10-27

申请号：US344202

申请日：1989-04-27

申请人： Ryo Fujimoto

发明人： Ryo Fujimoto

IPC分类号： H04N1/64 ,  H04N5/77 ,  H04N9/79 ,  H04N9/797 ,  H04N9/80 ,  H04N9/81 ,  H04N9/896

CPC分类号： H04N5/772 ,  H04N1/646 ,  H04N9/7925 ,  H04N9/7973 ,  H04N9/81 ,  H04N9/896 ,  Y10S358/906

摘要： An image signal recording apparatus is provided for recording on a recording medium an image signal obtained by imaging an object. The apparatus is arranged to sense the object, to generate first and second sensed image signals containing signal components which are the same in kind, and a third second image signal containing signal components which differ in kinds from the signal components of the first and second sensed image signals, to form a first recording image signal for one frame, which includes a luminance signal and a color-difference line-sequential signal in which two kinds of color-difference signals are alternated in every one horizontal scanning period, by using the first and third sensed image signal, and to form a second recording image signal for one frame, which includes a luminance signal and a color-difference line-sequential signal in which color-difference signals are alternated with a rotation which at least partially differs from the rotation of the color-difference signals contained in said first recording signal, by using the second sensed image signal and th ethird sensed image signal, and to record the thus-formed first recording image signal and the thus-formed second recording image signal on different areas of the recording medium, respectively.

摘要翻译： 提供了一种图像信号记录装置，用于在记录介质上记录通过对物体成像获得的图像信号。 该装置被布置为感测物体，以产生包含实物相同的信号分量的第一和第二感测图像信号，以及包含与第一和第二感测的信号分量不同的信号分量的第三第二图像信号 形成一帧的第一记录图像信号，其包括在每一个水平扫描周期中两种色差信号交替的亮度信号和色差线顺序信号，通过使用第一 和第三感测图像信号，并且形成一帧的第二记录图像信号，其包括亮度信号和色差信号，其中色差信号与至少部分地不同于 包含在所述第一记录信号中的色差信号的旋转通过使用第二检测图像信号和第三个感测图像信号， 并将这样形成的第一记录图像信号和如此形成的第二记录图像信号分别记录在记录介质的不同区域上。

公开(公告)号：US5115323A

公开(公告)日：1992-05-19

申请号：US413064

申请日：1989-09-27

申请人： Kaoru Tachibana ,  Ken Morita ,  Hiroo Takahashi

发明人： Kaoru Tachibana ,  Ken Morita ,  Hiroo Takahashi

IPC分类号： H04N9/85 ,  H04N9/797 ,  H04N9/81

CPC分类号： H04N9/81 ,  H04N9/7973

摘要： A wide bandwidth color video signal, such as a high definition television (HDTV) signal is recorded on a video disc by timebase expanding the luminance component and timebase compressing the color difference components to a bandwidth substantially equal to the bandwidth of the timebase expanded luminance component. The timebase expanded luminance component and the timebase compressed color difference components are time division multiplexed and separated into plural channels of multiplexed signals, each of which is recorded in a respective track on the video disc. Signals recorded in this format are recovered by reproducing the plural channels of multiplexed luminance and color difference components from respective tracks, demultiplexing the timebase expanded luminance component and the timebase compressed color difference components, timebase compressing the separated luminance component to return it to its conventional timebase, and timebase expanding the separated color difference components to return them to their conventional time base.

摘要翻译： 将高分辨率电视（HDTV）信号等高带宽彩色视频信号通过时基扩展将色差分量的亮度分量和时基扩展到基本上等于时基扩展亮度分量的带宽的带宽而被记录在视频盘上 。 时基扩展的亮度分量和时基压缩色差分量被时分复用并分离成多个信道的多路复用信号，每个信道被记录在视频盘上的相应磁道中。 以这种格式记录的信号通过再现来自相应磁道的多路复用亮度和色差分量的多个通道，多路分解时基扩展亮度分量和时基压缩色差分量来恢复，时基压缩分离的亮度分量以将其返回到其常规时基 ，并且时基扩展分离的色差组件以将它们返回到其常规时基。

公开(公告)号：US5083212A

公开(公告)日：1992-01-21

申请号：US562450

申请日：1990-08-02

申请人： Hideo Owa ,  Mikio Sugiki ,  Hitoshi Okada ,  Hiroo Takahashi

发明人： Hideo Owa ,  Mikio Sugiki ,  Hitoshi Okada ,  Hiroo Takahashi

IPC分类号： H04N9/802 ,  G11B7/00 ,  G11B7/004 ,  G11B20/00 ,  H04N9/81 ,  H04N9/82 ,  H04N9/835

CPC分类号： H04N9/8211 ,  H04N9/81 ,  H04N9/8216 ,  H04N9/8355

摘要： In an apparatus and method for optically recording on an optical disk a television signal comprised of a color image signal and an audio signal; one horizontal period portion of an original luminance signal and one horizontal period portion of two original color difference signals from a standard television signal are time-base-compressed to generate a time-base-compressed video signal for one horizontal period, the audio signal is digitized and time-base-compressed, and then the time-base-compressed digital audio signal and the time-base-compressed video signal are time-division-multiplexed with each other and recorded on the optical disk.

公开(公告)号：US4916548A

公开(公告)日：1990-04-10

申请号：US21481

申请日：1987-03-04

申请人： Yoshihiro Morioka ,  Masaaki Kobayashi

发明人： Yoshihiro Morioka ,  Masaaki Kobayashi

IPC分类号： H04N9/79 ,  H04N9/797 ,  H04N9/81 ,  H04N9/815 ,  H04N9/82 ,  H04N9/825

CPC分类号： H04N9/825 ,  H04N9/79 ,  H04N9/7921 ,  H04N9/81 ,  H04N9/8216

摘要： A video tape recorder has a pair of rotary magnetic heads spaced apart by 180.degree. from each other on a rotary cylinder which rotates one turn (360.degree.) during each field of a video signal to be recorded. A recording circuit has first and second memories for respectively storing first and second channel component signals of the video signal contained in at least one field for time-compressing them. The first and second memories are controlled to output the time-compressed first and second channel component signals alternately. A reproducing circuit has third and fourth memories for respectively time-expanding the time-compressed first and second channel component signals contained in a reproduced signal to obtain the original two-channel component signals.

摘要翻译： 磁带录像机具有在要记录的视频信号的每个场中旋转一圈（360度）的旋转圆筒上彼此间隔180度的一对旋转磁头。 记录电路具有第一和第二存储器，用于分别存储包含在至少一个场中的视频信号的第一和第二信道分量信号以对它们进行时间压缩。 控制第一和第二存储器以交替地输出时间压缩的第一和第二信道分量信号。 再现电路具有第三和第四存储器，用于分别对包含在再现信号中的时间压缩的第一和第二声道分量信号进行时间扩展，以获得原始的两声道分量信号。

公开(公告)号：US4811117A

公开(公告)日：1989-03-07

申请号：US947411

申请日：1986-12-24

申请人： Yoshihiro Morioka ,  Masaaki Kobayashi ,  Yoshitomi Nagaoka

发明人： Yoshihiro Morioka ,  Masaaki Kobayashi ,  Yoshitomi Nagaoka

IPC分类号： G11B5/53 ,  H04N5/7826 ,  H04N5/91 ,  H04N9/81 ,  H04N9/825 ,  H04N9/79

CPC分类号： H04N9/825

摘要： A video tape recorder for recording two-channel component signals of a video signal on a magnetic tape and for reproducing the recorded signals includes a recording signal processing system for processing the two-channel component signals into first and second recordable signals, an electromagnetic conversion system including two pairs of magnetic heads for recording the first and second recordable signals, respectively, on the magnetic tape and for reproducing the first and second recorded signals, respectively, and a reproduced signal processing system for processing the reproduced signals into representations of the original two-channel component signals. Each pair of heads of the two pairs of heads are disposed so as to be apart by 180.degree. from each other on a rotary cylinder and so as to be apart by 90.degree. from each head of the other pair of heads.

摘要翻译： 用于在磁带上记录视频信号的双声道分量信号并用于再现记录信号的磁带录像机包括用于将双通道分量信号处理为第一和第二可记录信号的记录信号处理系统，电磁转换系统 包括分别用于在磁带上记录第一和第二可记录信号的两对磁头和分别用于再现第一和第二记录信号的再现信号处理系统，以及再现信号处理系统，用于将再现信号处理成原始两个 通道分量信号。 两对头的每一对头部设置成在旋转圆筒上彼此分开180°，并且与另一对头部的每个头部分开90°。