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1. 发明授权

US4791498A Time base corrector 失效
标题翻译：时基校正器
公开(公告)号：US4791498A
公开(公告)日：1988-12-13
申请号：US30473
申请日：1987-03-26
申请人： Mitsugu Yoshihiro
发明人： Mitsugu Yoshihiro
IPC分类号： H04N9/80 , H04N5/956 , H04N9/896 , H04N5/95
CPC分类号： H04N9/896
摘要： A time base corrector for correcting time base fluctuations in a video signal is effective to remove both low frequency time base fluctuations and repetitive high frequency time base fluctuations repeating at the field period of the video signal. The time base corrector includes a memory having a plurality of addresses for storing residual phase error data corresponding to iundividual horizontal lines of each field period. A control circuit supplies corresponding residual phase error data from the memory to be used in compensating a present phase error signal whereby the high frequency time base fluctuations may be removed, and further mixes the present phase error signal with corresponding residual phase error data to generate new residual phase error data for storage in the memory in place of the original residual phase error data.
摘要翻译：用于校正视频信号中的时基波动的时基校正器有效地消除在视频信号的场周期中重复的低频时基波动和重复的高频时基波动。时基校正器包括具有多个地址的存储器，用于存储对应于每个场周期的个人水平线的残余相位误差数据。控制电路从存储器中提供相应的残留相位误差数据，用于补偿当前的相位误差信号，从而可以去除高频时基波动，并且进一步将当前的相位误差信号与对应的残留相位误差数据进行混合以产生新的用于存储在存储器中的残留相位误差数据代替原始残留相位误差数据。

2. 发明授权

US4725895A Still picture reproduction system with color framing phase synchronization 失效
标题翻译：具有彩色成帧相位同步的静态图像再现系统
公开(公告)号：US4725895A
公开(公告)日：1988-02-16
申请号：US875186
申请日：1986-06-17
申请人： Masahiro Miyamoto , Kazuhisa Nishimura , Mitsugu Yoshihiro
发明人： Masahiro Miyamoto , Kazuhisa Nishimura , Mitsugu Yoshihiro
IPC分类号： H04N9/793 , G11B15/18 , G11B15/467 , H04N5/782 , H04N5/7826 , H04N9/79 , H04N9/87
CPC分类号： G11B15/1875
摘要： In a helical-scan video tape recorder, when the color framing of a reproduced video signal when a magnetic tape is stopped and of a reference video signal when an activation command signal is sent to control means for controlling a capstan motor do not coincide, the activation state of a magnetic tape of the video tape recorder (VTR) is so controlled that the color framings of both video signals are quickly matched with each other.
摘要翻译：在螺旋扫描磁带录像机中，当磁带停止时再现的视频信号的彩色成像以及当激活命令信号被发送到用于控制主导轴电动机的控制装置的参考视频信号不一致时，磁带录像机（VTR）的磁带的激活状态受到如此控制，使得两个视频信号的彩色帧彼此快速匹配。

3. 发明授权

US4663555A Method and apparatus for controlling a bimorph leaf which supports a deflectable head 失效
标题翻译：用于控制支撑偏转头的双压电晶片的方法和装置
公开(公告)号：US4663555A
公开(公告)日：1987-05-05
申请号：US836159
申请日：1986-03-04
申请人： Mitsugu Yoshihiro
发明人： Mitsugu Yoshihiro
IPC分类号： G11B5/592 , H01L41/04 , H01L41/09 , H01L41/08 , G11B5/52
CPC分类号： H01L41/042 , G11B5/592
摘要： An apparatus for controlling a deflectable head mounted on a bimorph leaf having a detector connected to the latter for detecting a deflection of the bimorph leaf, a drive signal generating circuit for generating a drive signal to deflect the bimorph leaf in response thereto, a combining circuit for combining output signals of the detector and the drive signal generating circuit, a damping signal generating circuit for generating a damping signal to attenuate a distortion of the bimorph leaf that is produced by the deflection of the bimorph leaf, a signal producing circuit for generating a signal corresponding to a variation of the detector that remains after application of the damping signal to the bimorph leaf, and a circuit connected between the signal producing circuit and the combining circuit for compensating and thereby reducing the signal corresponding to the remaining variation of the detector.
摘要翻译：一种用于控制安装在双压电晶片上的可偏转头的装置，其具有与之相连的检测器，用于检测双压电晶片的偏转;驱动信号产生电路，用于产生驱动信号以使双晶片叶响应于其偏转;组合电路用于组合检测器和驱动信号发生电路的输出信号的阻尼信号产生电路，用于产生阻尼信号以衰减由双压电晶片叶片的偏转产生的双压电晶片的失真;阻尼信号产生电路，对应于在将阻尼信号施加到双压电晶片之后保持的检测器的变化的信号，以及连接在信号产生电路和组合电路之间的电路，用于补偿并因此减少与检测器的剩余变化相对应的信号。

4. 发明授权

US6011898A Video signal editing apparatus 失效
标题翻译：视频信号编辑装置
公开(公告)号：US6011898A
公开(公告)日：2000-01-04
申请号：US900348
申请日：1997-07-25
申请人： Kenichi Iwasaki , Mitsugu Yoshihiro , Hirofumi Murakami , Noboru Yanagita
发明人： Kenichi Iwasaki , Mitsugu Yoshihiro , Hirofumi Murakami , Noboru Yanagita
IPC分类号： G11B27/024 , G11B27/028 , G11B27/031 , G11B27/032 , G11B27/11 , G11B27/28 , G11B27/30 , G11B27/32 , G11B27/34 , H04N5/77 , H04N5/7826 , H04N5/783 , H04N5/92 , H04N5/937 , H04N5/93 , H04N5/91
CPC分类号： H04N5/937 , G11B27/028 , G11B27/031 , G11B27/11 , G11B27/28 , G11B27/3027 , G11B27/322 , G11B27/34 , H04N5/9201 , G11B2220/455 , G11B2220/65 , G11B2220/90 , G11B27/024 , G11B27/032 , H04N5/77 , H04N5/78263 , H04N5/783
摘要： The present invention has as its object to reduce the time and and effort in the work of finding a portion necessary for editing work from a video signal recorded on a video tape. A VTR apparatus (12) reproduces a video signal and sampling data showing the start and end of the shot from a video tape (120). A VP circuit (22) reduces the size of the video signal. A detection circuit (24) detects the boundaries of scenes or important portions based on the reproduced sampling data. The sampling memory (30) samples and records the video signal reduced by the VP circuit (22) at a timing of detection of the boundaries of the scene or important portions by the detection apparatus (24). A display device (34) displays the video signal stored in the sampling memory (30) in a predetermined array along with a time code etc.
摘要翻译：本发明的目的是减少从记录在录像带上的视频信号中找到编辑工作所需的部分的工作的时间和精力。 VTR装置（12）从视频磁带（120）再现视频信号和示出拍摄开始和结束的采样数据。 VP电路（22）减小视频信号的大小。检测电路（24）基于再现的采样数据检测场景或重要部分的边界。采样存储器（30）在由检测装置（24）检测场景或重要部分的边界的定时采样并记录由VP电路（22）减少的视频信号。显示装置（34）将存储在采样存储器（30）中的视频信号与时间码等一起以预定的阵列显示。

5. 发明授权

US5461519A Recording and reproducing apparatus with helical scan tracking 失效
标题翻译：具有螺旋扫描跟踪的记录和再现设备
公开(公告)号：US5461519A
公开(公告)日：1995-10-24
申请号：US991265
申请日：1992-12-16
申请人： Mitsugu Yoshihiro , Yasuo Iwasaki
发明人： Mitsugu Yoshihiro , Yasuo Iwasaki
IPC分类号： G11B5/588 , G11B15/467 , G11B21/04 , G11B5/584
CPC分类号： G11B15/4678
摘要： A digital tape recording and reproducing apparatus includes a rotary drum, a magnetic tape helically wrapped around the rotary drum, a mechanism for advancing the magnetic tape relative to the rotary drum, and a recording/reproducing magnetic head mounted on the drum which scans the magnetic tape for recording or reproducing digital signals. The digital signals are recorded in, or reproduced from, successive inclined tracks formed on the tape as the tape is advanced. During recording of the signals, a timing signal is generated at a predetermined interval of time after detection of a reference signal that represents a phase of rotation of the drum, and then the timing signal is recorded in at least one of the inclined tracks, interspersed with the digital signals recorded in the track. During reproduction of signals from the tape, the drum phase reference signal is detected and the timing signal is reproduced and detected, and the time interval between detection of the two signals is measured. The mechanism for advancing the tape is controlled on the basis of the measured interval so that the magnetic head properly scans the recorded tracks.
摘要翻译：一种数字磁带记录和再现装置包括一个旋转磁鼓，一个螺旋缠绕在旋转磁鼓上的磁带，一个使磁带相对于旋转磁鼓前进的机构，以及安装在滚筒上的记录/再生磁头，用于记录或再现数字信号的磁带。当磁带前进时，数字信号被记录在形成在磁带上的连续的倾斜磁道中或从其再现。在记录信号期间，在检测到表示滚筒的旋转相位的参考信号之后，以预定的时间间隔生成定时信号，然后将定时信号记录在至少一个倾斜轨迹中，散布数字信号记录在轨道中。在从磁带再现信号期间，检测鼓相位参考信号，并再现和检测定时信号，并且测量两个信号的检测之间的时间间隔。基于测量的间隔来控制推进带的机构，使得磁头适当地扫描记录的轨道。

6. 发明授权

US4758912A Tape loading apparatus 失效
标题翻译：胶带装载装置
公开(公告)号：US4758912A
公开(公告)日：1988-07-19
申请号：US26376
申请日：1987-03-16
申请人： Mitsugu Yoshihiro , Takashi Sasao
发明人： Mitsugu Yoshihiro , Takashi Sasao
IPC分类号： G11B15/43 , G11B15/48 , G11B15/665
CPC分类号： G11B15/43 , G11B15/48 , G11B15/6653
摘要： In a magnetic tape cassette recording and/or reproducing device having a tape loading apparatus for withdrawing tape from an operatively positioned cassette and wrapping the withdrawn tape about a guide drum having a rotary head for recording or reproducing signals on the tape; supply and take-up reel motors apply torques to resist unwinding of the tape from supply and take-up reels in the operatively positioned cassette, a servo-control maintains the supply reel in a stopped condition during a loading operation, the ratio of currents supplied to the supply and take-up reel motors, respectively, for achieving the stopped condition of the supply reel and for applying a constant torque to the take-up reel is determined and the radius of the tape wound on one of the reels is calculated from such ratio, whereupon, a value of the torque that has to be applied to that one reel for maintaining a predetermined tension in the tape during the loading operation is calculated in accordance with the calculated radius of the tape wound on that one reel.
摘要翻译：在具有用于从可操作定位的盒子中取出带子的带装载装置并将取出的带缠绕在具有用于在带上记录或再现信号的旋转头的导向鼓的磁带盒记录和/或再现装置中的情况下，供应和收取卷轴电机施加扭矩以阻止带在可操作定位的盒中的供应和卷取卷轴的退绕，伺服控制器在加载操作期间将供应卷轴保持在停止状态，提供的电流比分别确定用于实现供带盘的停止状态和向卷取卷轴施加恒定转矩的供纸和卷取卷盘马达，并且卷绕在卷轴之一上的卷的半径由因此，根据计算出的缠绕在该一个卷轴上的带的半径来计算在加载操作期间必须施加到用于保持带中的预定张力的一个卷轴的扭矩的值。

7. 发明授权

US4438377A Stop control circuit for brushless DC motor 失效
标题翻译：无刷直流电机停机控制电路
公开(公告)号：US4438377A
公开(公告)日：1984-03-20
申请号：US270219
申请日：1981-06-04
申请人： Masaaki Sakai , Mitsugu Yoshihiro
发明人： Masaaki Sakai , Mitsugu Yoshihiro
IPC分类号： C07C2/42 , C07C45/00 , C07C45/42 , C07C45/46 , C07C45/49 , C07C45/51 , C07C45/56 , C07C47/546 , C07C49/792 , C11B9/00 , H02P3/10 , H02P6/24 , H02K29/02
CPC分类号： H02P6/24 , C07C2/42 , C07C45/00 , C07C45/42 , C07C45/46 , C07C45/49 , C07C45/515 , C07C45/565 , C07C47/546 , C07C49/792 , H02P3/10 , C07C2102/08 , C07C2527/054 , C07C2527/1213 , C07C2531/04
摘要： A stop control circuit for a DC motor causes the motor to stop precisely by purely electrical action. A DC motor is provided with a bidirectional driving circuit, a servo circuit for controlling the driving circuit, and a rotation detector associated with the motor shaft to provide a phase signal that depends, in magnitude and polarity, on the particular rotational angle of the shaft, regardless whether the motor is turning. A stop control circuit then includes an amplifier whose output varies according to the phase signal, and a switch that normally provides the servo signal to the driving circuit, but, upon command, switches over to provide thereto the output of the amplifier as a brake signal. Alternatively the rotation detector can include two sensor elements separated by .pi./2, and the stop control circuit can include an inverting amplifier, a non-inverting amplifier coupled to one of the sensor elements, and a switch circuit with inputs coupled respectively to these amplifiers. A comparator provides a switch signal to the switch circuit in dependence on the phase signal from the other sensor element. In another embodiment, a differential amplifier provides a brake signal in dependence upon both the phase signals from the two sensor elements.
摘要翻译：用于直流电动机的停止控制电路使得电动机通过纯粹的电动作而精确地停止。直流电动机设置有双向驱动电路，用于控制驱动电路的伺服电路和与电动机轴相关联的旋转检测器，以提供在轴的特定旋转角度上取决于大小和极性的相位信号，无论电机是否转动。然后，停止控制电路包括其输出根据相位信号而变化的放大器，以及通常向驱动电路提供伺服信号的开关，但是在命令之后切换以提供放大器的输出作为制动信号。或者，旋转检测器可以包括由pi / 2分开的两个传感器元件，并且停止控制电路可以包括反相放大器，耦合到传感器元件中的一个的非反相放大器，以及分别连接到这些放大器的开关电路。比较器根据来自另一个传感器元件的相位信号向开关电路提供开关信号。在另一个实施例中，差分放大器根据来自两个传感器元件的相位信号提供制动信号。

8. 发明授权

US5430583A Magnetic recording and/or reproducing apparatus 失效
标题翻译：磁记录和/或再现装置
公开(公告)号：US5430583A
公开(公告)日：1995-07-04
申请号：US52752
申请日：1993-04-27
申请人： Mitsugu Yoshihiro , Kazuyuki Sugizaki , Mikio Kita , Osamu Shimizu
发明人： Mitsugu Yoshihiro , Kazuyuki Sugizaki , Mikio Kita , Osamu Shimizu
IPC分类号： G11B15/467 , G11B5/584
CPC分类号： G11B15/4678
摘要： A magnetic recording and reproducing apparatus, e.g., a video tape recorder for recording and reproducing digital video signals etc., is intended to reliably perform a tracking control even when recording tracks are formed with high density. A first pilot signal having a large azimuth loss and a second pilot signal without azimuth loss are recorded in a recording track, and a rough tracking control operation and a fine tracking control operation are executed on the basis of the second pilot signal and the first pilot signal respectively.
摘要翻译：即使在以高密度形成记录轨迹的情况下，用于记录和再现数字视频信号等的磁记录和再现装置也可以可靠地执行跟踪控制。具有大的方位损失的第一导频信号和没有方位损失的第二导频信号被记录在记录磁道中，并且基于第二导频信号和第一导频执行粗略跟踪控制操作和精细跟踪控制操作信号。

9. 发明授权

US4868923A Tape loading apparatus 失效
标题翻译：胶带装载装置
公开(公告)号：US4868923A
公开(公告)日：1989-09-19
申请号：US160482
申请日：1988-02-25
申请人： Mitsugu Yoshihiro
发明人： Mitsugu Yoshihiro
IPC分类号： G11B15/43 , G11B15/665
CPC分类号： G11B15/6653 , G11B15/43
摘要： In a tape loading apparatus having a loading ring with guides for withdrawing a magnetic tape from a tape cassette and wrapping it around a rotary drum, the rotating speed of the loading ring is controlled in accordance with the loading position, that is, the rotation angle of the loading ring, to protect the magnetic tape from being damaged during a loading operation, and a torque for resisting unwinding of the tape from a reel in the cassette during the loading operation is varied in accordance with the amount of tape wound thereon.

10. 发明授权

US07092192B1 Videotape recording and playback device, and videotape player 失效
标题翻译：录像带录像和播放设备，以及录像带播放器
公开(公告)号：US07092192B1
公开(公告)日：2006-08-15
申请号：US09889546
申请日：2000-11-22
申请人： Mitsugu Yoshihiro
发明人： Mitsugu Yoshihiro
IPC分类号： G11B5/09
CPC分类号： G11B15/026 , G11B5/0086 , G11B5/534 , G11B15/07 , G11B15/125 , G11B15/1875 , G11B15/20 , G11B15/46 , G11B15/4673 , G11B15/52 , H04N5/78263
摘要： The object of the present invention is to reduce the load and specification requirements on the network and the video server. The buffer usage rate is counted and supplied to the tape driving controller 7. In the reproduction mode, the tape driving controller 7 decreases the running speed of a video tape when the buffer usage rate is larger than the proper value. And when the buffer usage rate is smaller than the proper value, the tape driving controller 7 increases the running speed of the video tape. Moreover, in the recording mode, the tape driving controller 7 stops the tape motion temporarily if the transmission speed of the network is slow and the buffer usage rate declines lower than the proper value. And if the buffer usage rate increases over the proper value, the tape driving controller 7 resumes the tape driving to record signals. Thus, the reproduction speed or the recording speed by the tape driving device 3 can be coincided with the transmission speed of the network.
摘要翻译：本发明的目的是减少网络和视频服务器的负载和规格要求。缓冲器使用率被计数并提供给带驱动控制器7。在再现模式中，当缓冲器使用率大于适当值时，磁带驱动控制器7降低录像带的运行速度。并且当缓冲器使用率小于适当值时，磁带驱动控制器7增加录像带的运行速度。此外，在记录模式中，如果网络的传输速度较慢并且缓冲器使用率下降到适当的值，则磁带驱动控制器7暂时停止磁带运动。并且，如果缓冲器使用率增加超过适当值，则磁带驱动控制器7恢复磁带驱动以记录信号。因此，带驱动装置3的再现速度或记录速度可以与网络的传输速度一致。

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