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1. 发明授权

US5323279A Magnetic tape driving apparatus with capstan rotating at different speeds 失效
标题翻译：磁带驱动装置，主轴以不同速度旋转
公开(公告)号：US5323279A
公开(公告)日：1994-06-21
申请号：US588138
申请日：1990-09-26
申请人： Yoshiyuki Yokomachi , Tohru Okuda , Shigeaki Kakiwaki , Akinori Aratani , Masaji Tsuji
发明人： Yoshiyuki Yokomachi , Tohru Okuda , Shigeaki Kakiwaki , Akinori Aratani , Masaji Tsuji
IPC分类号： G11B15/43 , G11B15/60 , G11B15/665 , G11B5/008
CPC分类号： G11B15/6651 , G11B15/43 , G11B15/602
摘要： A magnetic tape driving apparatus includes: a stationary magnetic head capable of recording and reproducing digital signals simultanouesly on multichannel tracks; tape guide members for drawing out a magnetic tape wound on a pair of tape supply/take-up reels contained in a cassette, contacting the magnetic tape with the stationary magnetic head, and guiding running of the magnetic tape; and a constant speed driving mechanism for holding the magnetic tape and making it run at a constant speed by capstans and pinch rollers provided on both of tape feed/take-up sides of the stationary magnetic head. The stationary magnetic head and the tape guide members having level regulators for regulating running positions of upper and lower edges of the magnetic tape, to regulate the level of running of the tape with high precision. The rotating speeds of the capstans on both of the tape feed/take-up sides are regulated, whereby the tension of the tape is maintained at a desired prescribed value, to ensure a stable running of the tape.
摘要翻译：磁带驱动装置包括：能够同时在多声道轨道上记录和再现数字信号的固定磁头; 磁带引导构件，用于拉出缠绕在盒中包含的一对磁带供应/卷取卷轴上的磁带，使磁带与固定磁头接触，并引导磁带的运行; 以及恒定速度驱动机构，用于通过设置在固定磁头的带进给/卷绕侧的绞盘和夹送辊来保持磁带并以恒定的速度运行。固定磁头和带引导件具有用于调节磁带的上边缘和下边缘的运行位置的液位调节器，以高精度调节磁带的运行水平。在两个带进给/卷取侧的绞盘的旋转速度被调节，由此将带的张力保持在期望的规定值，以确保带的稳定运行。

2. 发明授权

US5663845A Magnetic recording/reproducing apparatus 失效
标题翻译：磁记录/再现装置
公开(公告)号：US5663845A
公开(公告)日：1997-09-02
申请号：US443848
申请日：1995-05-18
申请人： Tatsushi Yamamoto , Shigeaki Kakiwaki , Tohru Okuda , Hideo Okada , Masaji Tsuji , Takamitsu Tadera , Akihito Yoshimoto
发明人： Tatsushi Yamamoto , Shigeaki Kakiwaki , Tohru Okuda , Hideo Okada , Masaji Tsuji , Takamitsu Tadera , Akihito Yoshimoto
IPC分类号： G11B15/46 , G11B15/50 , G11B15/52 , G11B15/54
CPC分类号： G11B15/54 , G11B15/46 , G11B15/50 , G11B15/52
摘要： A magnetic recording/reproducing apparatus compares speed information obtained by speed detecting means for a magnetic tape with a set travelling speed of the magnetic tape in a control circuit, and controls the rotational frequency of a driving motor for a take-up reel, thereby controlling constant-speed travelling of the magnetic tape, with employment of no capstan. According to this system, the overall apparatus can be simplified and miniaturized with reduction in weight and cost. Further, it is possible to improve constant-speed travelling performance of the magnetic tape by adjusting resonance and antiresonance appearing due to total equivalent inertia moment related to the magnetic tape and reels in the transfer characteristic of the control system.
摘要翻译：磁记录/再现装置将由磁带的速度检测装置获得的速度信息与控制电路中的磁带的设定行进速度进行比较，并且控制用于卷取卷轴的驱动电机的旋转频率，从而控制使用无绞盘的速度恒定的磁带。根据该系统，通过减轻重量和成本，可以使整体装置简化和小型化。此外，可以通过调节由于与控制系统的传送特性中的磁带和卷轴相关的总等效惯性矩而出现的共振和反谐振，来提高磁带的恒速行驶性能。

3. 发明授权

US5491594A Magnetic recording/reproducing apparatus 失效
标题翻译：磁记录/再现装置
公开(公告)号：US5491594A
公开(公告)日：1996-02-13
申请号：US65133
申请日：1993-05-20
申请人： Tatsushi Yamamoto , Sigeaki Kakiwaki , Tohru Okuda , Hideo Okada , Masaji Tsuji , Takamitsu Tadera , Akihito Yoshimoto
发明人： Tatsushi Yamamoto , Sigeaki Kakiwaki , Tohru Okuda , Hideo Okada , Masaji Tsuji , Takamitsu Tadera , Akihito Yoshimoto
IPC分类号： G11B15/46 , G11B15/50 , G11B15/52 , G11B15/54 , G11B15/093
CPC分类号： G11B15/54 , G11B15/46 , G11B15/50 , G11B15/52
摘要： A magnetic recording/reproducing apparatus compares speed information obtained by speed detecting means for a magnetic tape with a set travelling speed of the magnetic tape in a control circuit, and controls the rotational frequency of a driving motor for a take-up reel, thereby controlling constant-speed travelling of the magnetic tape, with employment of no capstan. According to this system, the overall apparatus can be simplified and miniaturized with reduction in weight and cost. Further, it is possible to improve constant-speed travelling performance of the magnetic tape by adjusting resonance and antiresonance appearing due to total equivalent inertia moment related to the magnetic tape and reels in the transfer characteristic of the control system.
摘要翻译：磁记录/再现装置将由磁带的速度检测装置获得的速度信息与控制电路中的磁带的设定行进速度进行比较，并且控制用于卷取卷轴的驱动电机的旋转频率，从而控制使用无绞盘的速度恒定的磁带。根据该系统，通过减轻重量和成本，可以使整体装置简化和小型化。此外，可以通过调节由于与控制系统的传送特性中的磁带和卷轴相关的总等效惯性矩而出现的共振和反谐振，来提高磁带的恒速行驶性能。

4. 发明授权

US5259563A Magnetic recording/reproducing apparatus without capstan 失效
标题翻译：没有绞盘的磁记录/再现设备
公开(公告)号：US5259563A
公开(公告)日：1993-11-09
申请号：US612348
申请日：1990-11-13
申请人： Shigeaki Kakiwaki , Tohru Okuda , Shigemi Asai , Masaji Tsuji
发明人： Shigeaki Kakiwaki , Tohru Okuda , Shigemi Asai , Masaji Tsuji
IPC分类号： B65H59/38 , G11B15/43 , G11B15/46 , G11B15/093
CPC分类号： G11B15/43 , B65H59/384 , G11B15/46
摘要： A magnetic recording/reproducing apparatus includes a guide roller which rotates as magnetic tape runs, and the running speed of the tape is detected on the basis of the rotation of the guide roller. The magnetic recording/reproducing apparatus further calculates a radius of a supply reel from the rotation of the guide roller and the rotation speed of the supply reel, calculates driving torque of the supply reel from the calculated result, and the supply reel is driven so that the tension of the magnetic tape is kept constant according to the calculated result.
摘要翻译：磁记录/重放装置包括一个作为磁带运行而旋转的导向辊，并且基于导辊的旋转来检测磁带的运行速度。磁记录/再现装置还从导辊的旋转和供带盘的旋转速度计算供带盘的半径，根据计算结果计算供带盘的驱动转矩，驱动供带盘，使得根据计算结果，磁带的张力保持恒定。

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