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1.发明授权公开(公告)号：US06778756B1
公开(公告)日：2004-08-17
申请号：US09598751
申请日：2000-06-22
IPC分类号： H04N576
CPC分类号： H04N5/9201 , H04N5/765
摘要： A countdown audio generation apparatus comprises a reproduction unit for reproducing a video signal and time information between which predetermined synchronization is maintained; a video output unit for outputting the video signal reproduced by the reproduction unit; a countdown audio generation unit for generating a countdown audio signal which informs that the time information reproduced by the reproduction unit reaches a predetermined countdown end time; and an audio output unit for outputting the countdown audio signal generated by the countdown audio generation unit. Therefore, the user of this apparatus can know the predetermined countdown end time by the countdown audio.
摘要翻译： 倒计时音频产生装置包括用于再现视频信号的再现单元和保持预定同步的时间信息; 视频输出单元，用于输出由再现单元再现的视频信号; 倒计时音频产生单元，用于产生倒数音频信号，通知由再现单元再现的时间信息达到预定的倒计时结束时间; 以及音频输出单元，用于输出由倒计时音频产生单元产生的倒计时音频信号。 因此，该装置的用户可以通过倒计时音频知道预定的倒计时结束时间。
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2.发明授权Tape speed control apparatus using rotation speed ratio of first and second tape reels 失效卷带速度控制装置，使用第一和第二卷轴的转速比
公开(公告)号：US5604652A
公开(公告)日：1997-02-18
申请号：US448975
申请日：1995-05-24
摘要： A tape speed command signal is differentiated, and in a multiplier, the torque necessary for acceleration or deceleration of a take-up reel motor is calculated in accordance with the moment of inertia of a take-up reel and a winding radius of the tape on the take-up reel. The calculated result is added to a torque command produced by a feedback control system.
摘要翻译： 磁带速度指令信号不同，在乘法器中，卷取电机的加速或减速所需的转矩根据卷取卷轴的转动惯量和带的卷绕半径计算 收纸卷轴。 将计算结果加到由反馈控制系统产生的转矩指令。
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公开(公告)号：US4631459A
公开(公告)日：1986-12-23
申请号：US804253
申请日：1985-12-03
摘要： A brushless DC motor which can be started positively by using a single position detecting element. The motor has a starting circuit which forcibly energizes the stator coils thereby to start rotating the rotor. The position detecting element produces n position signals corresponding to n positions of the rotor at which a specific stator coil is to be energized. When the position detecting element produces one of the n position signals, the motor begins to energize the stator coils according to position signals obtained from counter electromotive forces generated in the stator coils. Further, one of the n position signals produced by the position detecting element is made different from the other, a reference position signal can be obtained.
摘要翻译： 通过使用单个位置检测元件能够正面启动的无刷直流电动机。 电动机具有启动电路，强制使定子线圈通电，从而开始转动转子。 位置检测元件产生对应于特定定子线圈通电的转子的n个位置的n个位置信号。 当位置检测元件产生n个位置信号中的一个时，电动机根据从定子线圈中产生的反电动势获得的位置信号开始给定子线圈通电。 此外，由位置检测元件产生的n个位置信号中的一个与另一个不同，可以获得基准位置信号。
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公开(公告)号：US5982982A
公开(公告)日：1999-11-09
申请号：US676826
申请日：1996-07-08
申请人： Tadashi Ono , Hiroyuki Uenaka , Akira Iketani , Masaaki Kobayashi , Souichirou Fujioka , Masataka Higuchi , Junji Yoshida
发明人： Tadashi Ono , Hiroyuki Uenaka , Akira Iketani , Masaaki Kobayashi , Souichirou Fujioka , Masataka Higuchi , Junji Yoshida
IPC分类号： G11B5/86 , G11B27/00 , G11B27/032 , G11B27/034 , H04N5/783 , H04N9/804 , H04N5/917 , H04N7/26
CPC分类号： G11B27/005 , G11B27/034 , G11B5/86 , H04N5/783 , G11B2220/20 , G11B2220/90 , G11B27/032 , H04N9/8047
摘要： The video signal processing apparatus of the invention includes a representative component extractor which receives a video signal including a signal representing representative components and a signal representing non-representative components, thereby extracting the signal representing the representative components from the video signal.
摘要翻译： 本发明的视频信号处理装置包括：代表性分量提取器，其接收包括表示代表性分量的信号和表示非代表性分量的信号的视频信号，从而从视频信号中提取表示代表分量的信号。
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公开(公告)号：US5546247A
公开(公告)日：1996-08-13
申请号：US186623
申请日：1994-01-26
IPC分类号： G11B15/467 , G11B5/584
CPC分类号： G11B15/4675
摘要： In a magnetic reproduction system in which a magnetic tape must be controlled to run so as to keep a specified relative phase to a rotary phase of a rotary head, a tracking control apparatus obtains a characteristic curve showing a characteristic relationship between the relative phase and an envelope level of a reproduced information signal obtained by the rotary head by changing the relative phase, obtains a regression curve with respect to the characteristic curve, and controls the magnetic tape to run so that the relative phase becomes a value corresponding to a maximum value point of the regression curve.
摘要翻译： 在必须控制磁带以运行以保持与旋转磁头的旋转相位相对的特定相位的磁性再现系统中，跟踪控制装置获得表示相对相位和相对相位之间的特性关系的特性曲线 通过改变相对相位由旋转头获得的再现信息信号的包络电平获得相对于特性曲线的回归曲线，并且控制磁带运行，使得相对相位变为对应于最大值点的值 的回归曲线。
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公开(公告)号：US5032936A
公开(公告)日：1991-07-16
申请号：US370879
申请日：1989-06-23
IPC分类号： G11B15/43 , G11B15/467
CPC分类号： G11B15/467 , G11B15/43
摘要： A tape traveling apparatus drives differentially a tracking control actuator and a tension control actuator by inputting simultaneously into a tension controller a tracking instruction signal inputted into a tracking controller, and variably adjusts an amplification of the tracking instruction signal inputted into the tension controller according to an output of a tension sensor for detecting a tension variation of a tape, thereby eliminating a differential error between the tracking control actuator and the tension control actuator.
摘要翻译： 磁带传送装置通过同时向张力控制器输入输入到跟踪控制器中的跟踪指令信号来驱动跟踪控制致动器和张力控制致动器，并根据输入到张力控制器的跟踪指令信号的放大可变地调节 输出用于检测带的张力变化的张力传感器，从而消除跟踪控制致动器和张力控制致动器之间的差分误差。
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公开(公告)号：US4945426A
公开(公告)日：1990-07-31
申请号：US200373
申请日：1988-05-31
IPC分类号： G11B15/18 , G11B15/467 , G11B15/60
CPC分类号： G11B15/467 , G11B15/1808 , G11B15/602
摘要： A tracking system for a helical scanning type magnetic recording/reproducing apparatus which records and reproduces signals by a rotating magnetic head in which a tracking error signal is detected, and the feeding amount of the magnetic tape is controlled by a transfer section to accomplish tracking. The transfer of the magnetic tape is controlled so that the average transfer speed of the magnetic tape becomes a specified speed during a period when the rotating magnetic head does not reproduce signals. In particular, the tracking error signal is separated into low band and high band frequency components by a band separating circuit. A first transfer section is controlled by the low band frequency component to accomplish average tracking, and a second transfer section is controlled by the high band frequency component thereby changing the length of the magnetic tape between the rotating drum and the first transfer section. At the same time, while the rotating magnetic head does not reproduce signals, the second transfer section is controlled so that the tracking error signal becomes zero during the initial stage when the rotating magnetic head scans over the recorded track thereby to accomplish more stable tracking.
摘要翻译： 螺旋扫描型磁记录/再现装置的跟踪系统，其通过检测到跟踪误差信号的旋转磁头记录和再现信号，并且由传送部分控制磁带的馈送量以完成跟踪。 控制磁带的传送，使得在旋转磁头不再现信号的期间磁带的平均传送速度变为规定的速度。 特别地，通过频带分离电路将跟踪误差信号分离成低频带和高频带分量。 第一传送部分由低频带频率分量控制以实现平均跟踪，并且第二传送部分由高频带频率分量控制，从而改变旋转鼓和第一传送部分之间的磁带的长度。 同时，当旋转磁头不再现信号时，控制第二传送部分，使得在旋转磁头扫描记录轨道的初始阶段，跟踪误差信号变为零，从而实现更稳定的跟踪。
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公开(公告)号：US5860610A
公开(公告)日：1999-01-19
申请号：US607764
申请日：1996-02-27
摘要： A torque command supplied to a tape running unit for drawing out and driving a tape wound on a first reel is modulated by a torque modulator depending on a moment of inertia of the first reel, a winding radius of the tape wound on the first reel, a moment of inertia and a rotating radius of the tape running unit, which are detected by a parameter detector. The first motor is responsive to the modulated torque command for rotating the first reel, thereby keeping the tension of the tape constant.
摘要翻译： 提供给用于拉出和驱动卷绕在第一卷轴上的带的带运行单元的扭矩指令由扭矩调制器调制，该转矩调节器根据第一卷轴的惯性矩，缠绕在第一卷轴上的带的卷绕半径， 磁带运行单元的惯性矩和旋转半径，由参数检测器检测。 第一马达响应于用于旋转第一卷轴的调制转矩指令，从而保持带的张力恒定。
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公开(公告)号：US5540398A
公开(公告)日：1996-07-30
申请号：US375223
申请日：1995-01-19
摘要： A torque command is applied to a tape running unit. The tape running unit for draws out and drives a tape wound on a first reel and taken up on a second reel. The torque command is modulated by a torque modulator in accordance with a moment of inertia of the first reel, a winding radius of the tape wound on the first reel, a moment of inertia of the second reel and a rotating radius of the second reel, which are detected by a parameter detector. The first motor is responsive to the modulated torque command for rotating the first reel, thereby keeping the tension of the tape constant.
摘要翻译： 扭矩指令被施加到带运行单元。 磁带运行单元，用于拉出并驱动卷绕在第一卷轴上的磁带并卷绕在第二卷轴上。 根据第一卷轴的转动惯量，缠绕在第一卷轴上的带的卷绕半径，第二卷轴的惯性矩和第二卷轴的转动半径，转矩指令由转矩调制器调制， 其由参数检测器检测。 第一马达响应于用于旋转第一卷轴的调制转矩指令，从而保持带的张力恒定。
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