公开(公告)号：US4885639A

公开(公告)日：1989-12-05

申请号：US202822

申请日：1988-06-06

申请人： Tetsuro Nakata ,  Ichitaro Sato ,  Tooru Eto

发明人： Tetsuro Nakata ,  Ichitaro Sato ,  Tooru Eto

IPC分类号： H04N5/21

CPC分类号： H04N5/21

摘要： An apparatus for eliminating a noise from a video signal, employs a first-order type noise eliminating section, for example, a limiter or the like. Such noise eliminating section, by utilizing line correlation, eliminates noise from the video signal in a high frequency region where the signal component level is large, for example, at the portion of a video signal corresponding to an edge portion of the display or picture.

摘要翻译： 一种用于从视频信号中消除噪声的装置，采用一阶型噪声消除部分，例如限幅器等。 这种噪声消除部分通过利用线相关来消除信号分量电平较大的高频区域中的视频信号的噪声，例如在对应于显示器或图像的边缘部分的视频信号的部分。

公开(公告)号：US4481547A

公开(公告)日：1984-11-06

申请号：US360461

申请日：1982-03-22

申请人： Ichitaro Sato

发明人： Ichitaro Sato

IPC分类号： G11B20/06 ,  H04N5/922 ,  H04N5/923 ,  H04N5/78 ,  H04N5/21

CPC分类号： H04N5/923

摘要： In a circuit for processing a video signal to be recorded, for example, in a VTR, as a frequency modulation of a relatively high frequency carrier, and in which, in advance of such frequency modulation and for the purpose of improving the signal-to-noise ratio particularly in respect to the so-called FM noise, the video signal is pre-emphasized and then clipped at a predetermined level for avoiding over-modulation; a compensating circuit responds to the pre-emphasized video signal for widening those overshoots thereof which are to be clipped and thereby avoiding waveform distortions that would otherwise occur at the locations of the clipped overshoots when the recorded signal is reproduced, frequency demodulated and then de-emphasized complementarily to the original pre-emphasis.

摘要翻译： 在用于处理要记录的视频信号（例如VTR）的电路中，作为相对高频率载波的频率调制，并且其中，在这种频率调制之前，并且为了改善信号到 特别是在所谓的FM噪声方面，视频信号被预先强调，然后在预定的水平上被削波，以避免过度调制; 补偿电路响应于预先加重的视频信号，用于加宽要被限幅的那些过冲，从而避免当记录信号被再现，频率解调然后解除时否则会在限幅过冲的位置发生的波形失真 强调原来的预先强调。

公开(公告)号：US4120007A

公开(公告)日：1978-10-10

申请号：US770236

申请日：1977-02-18

申请人： Ichitaro Sato

发明人： Ichitaro Sato

IPC分类号： H04N5/93 ,  G11B15/14

CPC分类号： G11B15/14

摘要： Head switching control apparatus for use in video signal processing apparatus of the type comprised of plural rotary transducer heads which scan successive tracks across a recording medium, each track having recorded therein a composite video signal. The head switching control apparatus functions to selectively connect individual transducer heads, one at a time, to video signal receiving circuitry. This head switching control apparatus is comprised of a position pulse generator for generating position pulses representing the relative positions of the transducer heads with respect to the recording medium. A bi-state circuit is conditioned in first and second states in response to successive position pulses. Switching circuitry is coupled to the transducer heads to electrically connect individual ones of the heads to the video signal receiving circuitry. A synchronizing signal separator is coupled to the video signal receiving circuitry and separates the equalizing signals included in the vertical blanking interval from the video signal. A switch pulse generator is coupled to the synchronizing signal separator and to the bi-state circuit and is responsive to the first and second states of the bi-state circuit for generating switch pulses which are synchronized with the separated equalizing signals. Thus, head switching noise is constrained to coincide with the equalizing signal to avoid false snyc signals.

摘要翻译： 一种用于视频信号处理装置的头切换控制装置，包括多个旋转传感器头，该旋转传感器头扫描记录介质上的连续轨道，每个轨道中记录有复合视频信号。 头切换控制装置用于将各个换能器头一次一个地选择性地连接到视频信号接收电路。 该头切换控制装置包括位置脉冲发生器，用于产生表示换能器头相对于记录介质的相对位置的位置脉冲。 响应于连续的位置脉冲，双态电路被调节在第一和第二状态。 开关电路耦合到换能器头以将各个头部电连接到视频信号接收电路。 同步信号分离器耦合到视频信号接收电路，并将垂直消隐间隔中包括的均衡信号与视频信号分离。 开关脉冲发生器耦合到同步信号分离器和双态电路，并且响应于双态电路的第一和第二状态，用于产生与分离的均衡信号同步的开关脉冲。 因此，头切换噪声被限制为与均衡信号一致以避免假snyc信号。

公开(公告)号：US06400887B1

公开(公告)日：2002-06-04

申请号：US09014282

申请日：1998-01-27

申请人： Masayuki Takano ,  Yoshimori Horiuchi ,  Ichitaro Sato ,  Kazumasa Yamamura ,  Noboru Yanagita

发明人： Masayuki Takano ,  Yoshimori Horiuchi ,  Ichitaro Sato ,  Kazumasa Yamamura ,  Noboru Yanagita

IPC分类号： H04N576

CPC分类号： G11B27/34 ,  G11B27/031 ,  G11B27/032 ,  G11B27/034 ,  G11B2220/20 ,  G11B2220/2512 ,  G11B2220/2525 ,  G11B2220/455 ,  G11B2220/90 ,  H04N5/765 ,  H04N5/77 ,  H04N5/775 ,  H04N5/926

摘要： An SDDI signal in accordance with an AV signal is selectively recorded in an MO disc 6 of a portable AV editing apparatus 1 from a hybrid recorder 20 provided with an on-line editing function. The user carries the portable AV editing apparatus 1 around separate from the hybrid recorder 20 and uses the SDDI signal recorded in the MO disc 6 to perform off-line editing and prepare an EDL (edit decision list). This EDL is transmitted from the field to the station. The EDL is used for on-line editing at the station.

摘要翻译： 根据AV信号的SDDI信号从具有在线编辑功能的混合记录器20选择性地记录在便携式AV编辑装置1的MO盘6中。 用户携带便携式AV编辑装置1与混合式记录器20分离，并使用记录在MO盘6中的SDDI信号进行离线编辑并准备EDL（编辑决定列表）。 该EDL从现场发送到车站。 EDL用于车站在线编辑。

公开(公告)号：US06275529B1

公开(公告)日：2001-08-14

申请号：US09078870

申请日：1998-05-14

申请人： Ichitaro Sato

发明人： Ichitaro Sato

IPC分类号： H04N712

CPC分类号： G11B27/031 ,  G11B27/024 ,  G11B27/34 ,  G11B2220/90 ,  H04N21/2187 ,  H04N21/23614 ,  H04N21/4348

摘要： A method of transmitting news data with script can simultaneously transmit video information and corresponding added information such as gathered news information to a news center from a news gathering field by use of an existing news transmission system. Digital video data, obtained by a video camera in a field, is timebase-compressed, and digital audio data is prepared on the basis of an audio signal. Added information such as script information is prepared as digital added information, and composite news data is generated by time-division-mixing these video data, audio data, and added information data. The composite news data is transmitted to a video receiving station by use of a news gathering system. In the video receiving station, the composite news data is time-division-distributed, and the time-division-distributed data is timebase-expanded, and combined with time-division-distributed audio data thereby to generate a video image signal. Simultaneously, a script, which is a broadcasting script, is generated from the time-division-distributed added information data.

摘要翻译： 用脚本发送新闻数据的方法可以通过使用现有的新闻传输系统，从新闻采集领域同时传送视频信息和收集的新闻信息等相应的附加信息到新闻中心。 通过视频摄像机在现场获得的数字视频数据被时基压缩，并且基于音频信号准备数字音频数据。 补充信息如脚本信息被准备为数字添加信息，并且通过对这些视频数据，音频数据和添加的信息数据进行时分混合来生成复合新闻数据。 通过使用新闻采集系统将复合新闻数据发送到视频接收站。 在视频接收站中，复合新闻数据是时分布式的，时分布式数据是时基扩展的，并与时分布式音频数据组合，从而产生视频信号。 同时，根据分时分布的附加信息数据生成作为广播脚本的脚本。

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。

公开(公告)号：US4661842A

公开(公告)日：1987-04-28

申请号：US753573

申请日：1985-07-10

申请人： Masafumi Ishige ,  Yoshitaka Kanemoto ,  Tamio Yokoyama ,  Ichitaro Sato

发明人： Masafumi Ishige ,  Yoshitaka Kanemoto ,  Tamio Yokoyama ,  Ichitaro Sato

IPC分类号： H04N9/78 ,  H04N9/79 ,  H04N5/21

CPC分类号： H04N9/78

摘要： When separating a composite video signal into a luminance signal component and the chrominance signal component by the use of filtering, a high frequency cross-talk component of the luminance signal is present in the chrominance signal and this may be cancelled using a horizontal correlator that imparts time delays and detects maximum and minimum levels relative to a reference level. In such luminance cross-talk cancellation by means of the horizontal correlator the usable chrominance signal length is shortened by almost one wave length out of four, thereby reducing the usable chrominance signal each time such luminance/chrominance signal separation occurs in a dubbing operation, for example. By utilizing two chroma separators in series each including a nonadditive mixer circuit, the resultant output from the second chroma separator circuit has substantially the same length as the portion of the composite video signal fed as the input. As a further safety factor in preventing the chrominance signal from being produced with excessive noise, a time delayed version of the composite video signal is level checked with the output of the second chroma separator unit and the signal having the lesser level is produced as the output.

摘要翻译： 当通过使用滤波将复合视频信号分离成亮度信号分量和色度信号分量时，亮度信号的高频串扰分量存在于色度信号中，并且这可以使用给出的水平相关器来消除 时间延迟并检测相对于参考电平的最大和最小电平。 在通过水平相关器的这种亮度串扰消除中，可用的色度信号长度在四分之一之间缩短几乎一个波长，从而每次在复制操作中发生这种亮度/色度信号分离时，可以减少可用的色度信号，因为 例。 通过利用串联的两个色度分离器，每个分色器包括非加法混合电路，来自第二色度分离器电路的合成输出具有与作为输入馈送的复合视频信号的部分基本相同的长度。 作为防止色度信号以过高噪声产生的另一个安全因素，复合视频信号的时间延迟版本与第二色度分离器单元的输出进行电平检查，并且产生具有较小电平的信号作为输出 。

公开(公告)号：US5189565A

公开(公告)日：1993-02-23

申请号：US553390

申请日：1990-07-17

申请人： Ichitaro Sato

发明人： Ichitaro Sato

IPC分类号： H04N5/922 ,  G11B20/02 ,  H04N5/923 ,  H04N5/931

CPC分类号： H04N5/9315 ,  H04N5/923

摘要： A slew rate converter is provided in a video signal recording circuit for limiting a signal having a high frequency and a high amplitude so as to avoid an over-modulation when the signal is reproduced. The high frequency and high amplitude component exceeding a pre-determined amplitude is detected and applied to the slew rate converter for reducing its slew rate so that the signal component having the high frequency and high amplitude is suppressed.

摘要翻译： 在视频信号记录电路中提供了一个转换速率转换器，用于限制具有高频和高振幅的信号，以避免信号再现时的过调制。 检测到超过预定幅度的高频和高振幅分量并将其施加到转换速率转换器以降低其转换速率，从而抑制具有高频和高振幅的信号分量。

公开(公告)号：US4998172A

公开(公告)日：1991-03-05

申请号：US061050

申请日：1987-06-16

申请人： Toshihiko Kitazawa ,  Ichitaro Sato

发明人： Toshihiko Kitazawa ,  Ichitaro Sato

IPC分类号： H04N9/793 ,  H04N9/64 ,  H04N9/79 ,  H04N9/83 ,  H04N9/87

CPC分类号： H04N9/7908 ,  H04N9/7912

摘要： A magnetic reproducing apparatus is provided with an improved secondary beat signal cancel circuit for reducing a secondary beat signal of a low-frequency converted chroma signal leaked into a reproduced luminance signal without deteriorating vertical resolution at the edge of an oblique check signal. The secondary beat signal cancel operation is interrupted during a period in which no vertical correlation exists between the edge portions of two succeeding horizontal lines of the oblique check signal.

摘要翻译： 一种磁再现装置设置有改进的次级节拍信号消除电路，用于减少泄漏到再现的亮度信号中的低频转换色度信号的次级节拍信号，而不会使倾斜检查信号的边缘处的垂直分辨率恶化。 在倾斜检查信号的两个后续水平行的边缘部分之间没有垂直相关的时段期间，次级节拍信号取消操作被中断。

公开(公告)号：US4839615A

公开(公告)日：1989-06-13

申请号：US145330

申请日：1988-01-19

申请人： Ichitaro Sato

发明人： Ichitaro Sato

IPC分类号： H04N5/922 ,  H03C3/00 ,  H04N5/92

CPC分类号： H04N5/92

摘要： A frequency modulating circuit comprising a circuit for separating a synchronizing signal from an input signal, a circuit for generating a sampling pulse in accordance with the synchronizing signal, a circuit for producing a frequency modulated signal out of the input signal, and a circuit for detecting the phase of the frequency modulated signal at the timing of the sampling pulse. The level of the input signal is corrected in accordance with the output of the detecting circuit, so that the phase of the frequency modulated signal is locked to a predetermined phase at the timing of the sampling pulse. Consequently, despite frequency modulation of the wide-band input signal, the invention is capable of preventing occurrence of any moire pattern that may otherwise be caused in displaying the demodulated signal.

摘要翻译： 一种频率调制电路，包括用于从输入信号中分离同步信号的电路，用于根据同步信号产生采样脉冲的电路，用于产生输入信号中的调频信号的电路，以及检测电路 在采样脉冲定时的频率调制信号的相位。 根据检测电路的输出校正输入信号的电平，使得在采样脉冲的定时将调频信号的相位锁定到预定的相位。 因此，尽管对宽带输入信号进行了频率调制，本发明能够防止在显示解调信号时可能引起的任何莫尔图案的发生。