公开(公告)号：US06254284B1

公开(公告)日：2001-07-03

申请号：US09145952

申请日：1998-09-03

申请人： Akihito Yoshimoto ,  Yoshio Yoshida

发明人： Akihito Yoshimoto ,  Yoshio Yoshida

IPC分类号： G02B600

CPC分类号： G11B7/22 ,  G11B7/124

摘要： In manufacturing an optical pickup, an adhesive is applied between an optical waveguide device and a wedge-shaped device fixing member, and an adhesive is applied between the wedge-shaped device fixing member and a stem. After the position of the optical waveguide device is adjusted in three-dimensional directions of an optical axis direction and directions orthogonal to the optical axis by moving the wedge-shaped device fixing member, the optical waveguide device and the wedge-shaped device fixing member are fixed.

摘要翻译： 在制造光学拾取器时，在光波导装置和楔形装置固定构件之间施加粘合剂，并且在楔形装置固定构件和杆之间施加粘合剂。 在通过移动楔形装置固定构件将光波导装置的位置在光轴方向和与光轴正交的方向的三维方向上调整后，光波导装置和楔形装置固定构件 固定。

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。

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。