公开(公告)号：US5153740A

公开(公告)日：1992-10-06

申请号：US825803

申请日：1992-01-21

Applicant: Kouichi Sato

Inventor： Kouichi Sato

IPC: G11B27/30 ,  H04N1/21 ,  H04N5/92 ,  H04N9/86

CPC classification number: H04N9/86 ,  G11B27/3027 ,  H04N5/9206 ,  H04N1/32101 ,  H04N2101/00 ,  H04N2201/212 ,  H04N2201/3214 ,  H04N2201/3226 ,  H04N2201/3243 ,  H04N2201/3277

Abstract: A device for use in an apparatus for demodulating the signal reproduced from a recording medium in a still video camera or the like in which the phase of the demodulated signal is always accurately detected. Horizontal periods in which the respective line-sequential color difference signals B-Y and R-Y are present are discriminated, and a timer is operated during periods when the B-Y signal is present. Data is read from the reproduced modulated signal at predetermined points within a half cycle of the waveform of the signal as designated by outputs of the timer.

Abstract translation: 一种在用于解调在静止摄像机等中从记录介质再现的信号的装置中使用的装置，其中总是精确地检测到解调信号的相位。 鉴别出各自行顺序色差信号B-Y和R-Y存在的水平周期，并且在存在B-Y信号的周期期间操作定时器。 在由定时器的输出指定的信号波形的半周期内的预定点处，从再现的调制信号读取数据。

公开(公告)号：US5075802A

公开(公告)日：1991-12-24

申请号：US460308

申请日：1990-01-03

Applicant: Kazuhito Ohashi

Inventor： Kazuhito Ohashi

IPC: H04N5/91 ,  H04N5/932 ,  H04N5/95 ,  H04N7/015 ,  H04N9/797 ,  H04N9/86 ,  H04N9/877 ,  H04N9/893

CPC classification number: H04N9/877 ,  H04N5/932 ,  H04N9/7973 ,  H04N9/86 ,  H04N9/893

Abstract: An image signal recording and reproducing system of this invention includes an apparatus for reproducing an image signal from a recording medium on which the image signal is recorded in a recording format selected between a first recording format for recording a reference signal for time base correction together with the image signal and a second recording format for recording the image signal without the reference signal for time base correction. The apparatus is arranged to detect whether or not the reference signal for time base correction is present in a signal reproduced from the recording medium and then to process and reproduce the signal reproduced from the recording medium on the basis of a reproduction format selected between a first reproduction format corresponding to the first recording format and a second reproduction format corresponding to the second recording format in accordance with the detection result. Accordingly, it is possible to reproduce the image signal in a correct format corresponding to the recording format of the image signal.

Abstract translation: 本发明的图像信号记录和再现系统包括一种用于从其中记录图像信号的记录介质再现图像信号的装置，其中记录格式以用于记录用于时基校正的参考信号的第一记录格式与 该图像信号和用于记录图像信号而没有用于时基校正的参考信号的第二记录格式。 该装置被设置为检测在从记录介质再现的信号中是否存在用于时基校正的参考信号，然后基于在第一和第二数据之间选择的再现格式来处理和再现从记录介质再现的信号 对应于第一记录格式的再现格式和与根据检测结果的第二记录格式对应的第二再现格式。 因此，可以以对应于图像信号的记录格式的正确格式再现图像信号。

公开(公告)号：US4864424A

公开(公告)日：1989-09-05

申请号：US947414

申请日：1986-12-24

Applicant: Atsuo Ochi ,  Masaaki Kobayashi ,  Akihiro Takeuchi ,  Kazuhiro Yamanishi

Inventor： Atsuo Ochi ,  Masaaki Kobayashi ,  Akihiro Takeuchi ,  Kazuhiro Yamanishi

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

CPC classification number: H04N9/81 ,  H04N9/825

Abstract: 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.

Abstract translation: 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：US4766485A

公开(公告)日：1988-08-23

申请号：US894129

申请日：1986-08-07

Applicant: Makoto Takayama

Inventor： Makoto Takayama

IPC: H04N9/64 ,  H04N5/16 ,  H04N9/72 ,  H04N9/86 ,  H04N1/46 ,  H04N9/71

CPC classification number: H04N9/72

Abstract: Apparatus is disclosed for processing an incoming video signal having line sequential R-Y and B-Y color difference signals at respective different DC offsets. The apparatus includes first and second memory circuits for receiving the incoming signal and for respective storage of the offsets of the R-Y and B-Y color difference signals. A computing circuit is operative selectively to subtract the contents of the first and second memory circuits from the incoming signal line sequence parts to provide offset-free versions thereof.

Abstract translation: 公开了用于处理在相应的不同DC偏移处具有行顺序R-Y和B-Y色差信号的输入视频信号的装置。 该装置包括第一和第二存储器电路，用于接收输入信号并分别存储R-Y和B-Y色差信号的偏移量。 计算电路有选择地从输入信号线序列部分中减去第一和第二存储器电路的内容以提供无偏移版本。

公开(公告)号：US4761690A

公开(公告)日：1988-08-02

申请号：US902957

申请日：1986-09-02

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

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

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

CPC classification number: H04N5/78263 ,  H04N9/81 ,  H04N9/86

Abstract: 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.

Abstract translation: 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：US4719518A

公开(公告)日：1988-01-12

申请号：US899545

申请日：1986-08-22

Applicant: Koichi Kido ,  Kenji Shibayama ,  Masahiko Tsuruta ,  Akira Hirota ,  Masato Mihara ,  Osamu Inoue

Inventor： Koichi Kido ,  Kenji Shibayama ,  Masahiko Tsuruta ,  Akira Hirota ,  Masato Mihara ,  Osamu Inoue

IPC: H04N5/782 ,  H04N5/7826 ,  H04N9/79 ,  H04N9/793 ,  H04N9/802 ,  H04N9/82 ,  H04N9/825 ,  H04N9/835 ,  H04N9/86 ,  H04N

CPC classification number: H04N5/78263 ,  H04N5/78213 ,  H04N9/7921 ,  H04N9/7936 ,  H04N9/802 ,  H04N9/8222 ,  H04N9/8255 ,  H04N9/835 ,  H04N9/86

Abstract: A magnetic recording apparatus for carrying out a recording by selectively using one of two kinds of recording systems comprises first through fourth rotary magnetic heads, a first circuit for producing an FM luminance signal, second and third circuits for producing first and second frequency division multiplexed signals, and a switching circuit. The first and second heads are mounted on a rotary body at mutually opposing positions, and have the same height position. The third and fourth heads are mounted on the rotary body at mutually opposing positions respectively in vicinities of the first and second heads along a rotating direction of the rotary body, and have the same height position. The switching circuit selectively supplies the output signals of the first and second circuits to the first through fourth heads when a luminance/color separation recording system is selected as the recording system, and selectively supplies the output signal of the third circuit to the first and second heads or to the third and fourth heads when a low band conversion color recording system is selected as the recording system.

Abstract translation: 通过选择性地使用两种记录系统中的一种进行记录的磁记录装置包括第一至第四旋转磁头，用于产生FM亮度信号的第一电路，用于产生第一和第二频分复用信号的第二和第三电路 ，以及开关电路。 第一和第二头部在彼此相对的位置处安装在旋转体上，具有相同的高度位置。 第三和第四头部沿着旋转体的旋转方向分别在第一和第二头部附近相互相对的位置处安装在旋转体上，并且具有相同的高度位置。 当选择亮度/颜色分离记录系统作为记录系统时，切换电路选择性地将第一和第二电路的输出信号提供给第一至第四磁头，并且选择性地将第三电路的输出信号提供给第一和第二磁头 当选择低频转换彩色记录系统作为记录系统时，磁头或者到第三和第四磁头。

公开(公告)号：US4714965A

公开(公告)日：1987-12-22

申请号：US807745

申请日：1985-12-11

Applicant: Tadaaki Yoshinaka ,  Takao Inoue ,  Kazuo Tomita

Inventor： Tadaaki Yoshinaka ,  Takao Inoue ,  Kazuo Tomita

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

CPC classification number: H04N9/896

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US4668988A

公开(公告)日：1987-05-26

申请号：US665417

申请日：1984-10-25

Applicant: Takayuki Sasaki ,  Masaaki Arai

Inventor： Takayuki Sasaki ,  Masaaki Arai

IPC: H04B1/62 ,  G11B20/02 ,  G11B20/24 ,  H04B14/04 ,  H04N5/14 ,  H04N5/92 ,  H04N5/923 ,  H04N9/79 ,  H04N9/793 ,  H04N9/86

CPC classification number: H04N9/7936 ,  H04N5/14 ,  H04N5/923 ,  H04N9/7904 ,  H04N9/86

Abstract: A non-linear digital emphasis circuit for non-linearly emphasizing a high frequency component of an input digital video signal in accordance with an amplitude of the digital video signal. This emphasis circuit comprises: a digital filter for emphasizing the high frequency component of the digital video signal; and a memory in which a data conversion table to non-linearly compress the amplitude of the digital video signal is written and to which the digital video signal is supplied as an address input. The respective polarities of the address input of the memory and of the readout output therefrom are inverted by a polarity inverter in accordance with the polarity of the digital video signal. With this emphasis circuit, an error of the frequency characteristic and time and temperature changes thereof are not caused and no adjustment of the characteristic is needed. Also, this circuit can be formed as an integrated circuit by utilizing only digital circuits.

Abstract translation: 一种非线性数字加重电路，用于根据数字视频信号的幅度非线性地强调输入数字视频信号的高频分量。 该强调电路包括：数字滤波器，用于强调数字视频信号的高频分量; 并且写入其中非线性压缩数字视频信号的幅度的数据转换表被写入并且数字视频信号被提供给其的地址输入的存储器。 根据数字视频信号的极性，通过极性反相器将存储器的地址输入和读出输出的相应极性反转。 利用该强调电路，不会引起频率特性及其时间和温度变化的误差，并且不需要调整特性。 此外，该电路可以仅通过利用数字电路形成为集成电路。

公开(公告)号：US4608611A

公开(公告)日：1986-08-26

申请号：US547105

申请日：1983-10-31

Applicant: Yoshihiko Ota

Inventor： Yoshihiko Ota

IPC: H04N9/793 ,  H04N9/825 ,  H04N9/83 ,  H04N9/86 ,  H04N9/80

CPC classification number: H04N9/7936 ,  H04N9/7933 ,  H04N9/825 ,  H04N9/83 ,  H04N9/86

Abstract: A color video signal recording and reproducing system includes a recording system which comprises first head gaps mounted on a rotary body, second head gaps mounted on the rotary body at locations lagging each of the first head gaps by a predetermined distance along a rotating direction of the rotary body, and a recorder for recording signals onto a tape which is caused to travel in a state where the tape is wrapped around a peripheral surface of the rotary body. The recorder first records a low-band converted carrier chrominance signal onto a first track by one of the first head gaps, and thereafter records a frequency modulated luminance signal onto a second track by one of the second head gaps. The second track has a track width which is larger than a track width of the first track and is formed over the first track in an overlapping manner with a track pitch which is at least larger than the track width of the first track. A reproducing system comprises a circuit for separating the low-band converted carrier chrominance signal from a signal which is reproduced from the tape by the first or second head gaps, and a circuit for separating the frequency modulated luminance signal from a signal which is reproduced from the tape by the second head gaps.

Abstract translation: 彩色视频信号记录和再现系统包括记录系统，该记录系统包括安装在旋转体上的第一磁头间隙，在旋转体上安装的第二磁头间隙，其位置沿着旋转体的旋转方向将每个第一磁头间隙延伸预定距离 旋转体和用于将信号记录到带上的记录器，该带在带缠绕在旋转体的周面的状态下被引导。 记录器首先通过第一磁头间隙中的一个将低频转换的载波色度信号记录在第一磁道上，然后通过第二磁头间隙中的一个将调频亮度信号记录在第二磁道上。 第二轨道的轨道宽度大于第一轨道的轨道宽度，并且以与至少大于第一轨道的轨道宽度的轨道间距重叠的方式形成在第一轨道上。 一种再现系统包括一个电路，用于将低频转换的载波色度信号与从磁带再现的信号分离第一或第二磁头间隙;以及电路，用于将频率调制的亮度信号与从 磁带由第二个磁头间隙。

公开(公告)号：US4577236A

公开(公告)日：1986-03-18

申请号：US508190

申请日：1983-06-27

Applicant: Kenji Takanashi

Inventor： Kenji Takanashi

IPC: G11B20/06 ,  H04N5/92 ,  H04N9/81 ,  H04N9/825 ,  H04N9/86 ,  H04N9/896 ,  H04N5/782

CPC classification number: H04N9/825 ,  H04N9/81 ,  H04N9/896

Abstract: In a magnetic reproducing apparatus for reproducing a luminance signal and timebase-compressed chrominance component signals recorded on separate tracks of a record medium, the reproduced chrominance component signals are directly supplied to a timebase expander and this timebase expander uses a reference clock which reference clock is employed in the timebase correction of the luminance signal and frequency-divided by the timebase compression ratio whereby to perform the timebase expansion and the timebase correction at the same time. Thus, it is not necessary that the timebase correction and the timebase expansion are performed by separate circuits and this leads to a simple circuit arrangement.

Abstract translation: 在用于再现记录在记录介质的单独轨道上的亮度信号和时基压缩色度分量信号的磁再现装置中，将再现的色度分量信号直接提供给时基扩展器，该时基扩展器使用参考时钟，参考时钟为 用于亮度信号的时基校正，并被时分压缩率除频，从而同时执行时基扩展和时基校正。 因此，不需要通过单独的电路进行时基校正和时基扩展，并且这导致简单的电路布置。