-
公开(公告)号：US4295171A
公开(公告)日：1981-10-13
申请号：US120287
申请日：1980-02-11
Applicant: Akira Hirota , Yoshiteru Kosaka , Kazutaka Ashida
Inventor： Akira Hirota , Yoshiteru Kosaka , Kazutaka Ashida
Abstract: A system for controlling the rotation of a rotating structure comprises a detector for detecting the rotation of the rotating structure a circuit for repeatedly forming address signals for every revolution of the rotating structure in response to a detection output from the rotation detector, a memory circuit in which control data responsive to deviations in the rotational peripheral speed of the rotating structure in each revolution thereof have been stored beforehand at addresses corresponding to the address signals, the address signals being supplied to the memory circuit, whereupon the data stored at the corresponding addresses are read out, and a control circuit for obtaining a control signal from the detection output of the rotation detector and the data thus read out from the memory circuit and accordingly controlling the rotation of the rotating structure.
Abstract translation: 用于控制旋转结构的旋转的系统包括：检测器，用于响应于来自旋转检测器的检测输出，检测旋转结构的旋转，用于重复地形成旋转结构的每转的地址信号的电路;存储器电路 预先将与旋转结构的旋转圆周速度的偏差相对应的控制数据存储在与地址信号相对应的地址上，将地址信号提供给存储电路，由此存储在相应地址处的数据为 读出，以及用于从旋转检测器的检测输出获取控制信号的控制电路和从存储器电路读出的数据，从而控制旋转结构的旋转。
-
公开(公告)号：US4626938A
公开(公告)日：1986-12-02
申请号：US470715
申请日：1983-02-28
Applicant: Hiroyuki Umeda , Kazutaka Ashida
Inventor： Hiroyuki Umeda , Kazutaka Ashida
IPC: G11B15/665 , G11B15/66
CPC classification number: G11B15/6656
Abstract: A tape loading device in a recording and/or reproducing apparatus which has a guide drum with heads for recording and/or reproducing signals onto a tape. A first belt is arranged along a first belt path which has a section extending between the guide drum and a cassette accommodating the tape. A second belt is arranged along a second belt path which has a section extending between the guide drum and the cassette. A driving mechanism drives the first and second belts so that each travels toward the guide drum during a tape loading mode and travels toward the cassette during a tape unloading mode. A pair of tape guide mechanisms are movable in response to the travel of the first and second belts for intercepting the tape within the cassette and for moving to predetermined positions in the vicinity of the guide drum during the tape loading mode to guide the tape at the predetermined positions. The tape travels along a predetermined tape path with respect to the guide drum. Guide paths guide the pair of tape guide mechanisms so that the tape guide mechanisms move along predetermined moving paths.
Abstract translation: 一种记录和/或再现装置中的磁带加载装置，其具有带有用于在信号带上记录和/或再现信号的磁头的导向鼓。 第一带沿着第一带路径布置，第一带路径具有在导向鼓和容纳带之间的盒子之间延伸的部分。 第二带沿着第二带路径布置，第二带路径具有在导向鼓和盒之间延伸的部分。 驱动机构驱动第一和第二带，使得它们在带装载模式期间朝着导向鼓行进，并且在带卸载模式期间朝向盒移动。 一对带引导机构可响应于第一和第二带的移动而移动，用于拦截盒内的带子，并且在带装载模式期间移动到导向鼓附近的预定位置以将带导向 预定位置。 胶带相对于导向鼓沿着预定的磁带路径行进。 引导路径引导一对带引导机构，使得带引导机构沿着预定的移动路径移动。
-
3.发明授权Tape recording reproducing apparatus having improved fast forward drive system 失效具有改进的快进驱动系统的磁带记录再现装置
公开(公告)号：US4407463A
公开(公告)日：1983-10-04
申请号：US295001
申请日：1981-08-21
Applicant: Kazutaka Ashida
Inventor： Kazutaka Ashida
Abstract: A tape recording and/or reproducing apparatus includes first and second motors for driving takeup and supply reels, respectively. The first motor is energized during fast forward mode to drive the takeup reel at a speed higher than the normal playback speed to feed the tape cassette from the supply reel to the takeup reel. The rotational speed of the supply reel, which is initially low and increases as a function of time, is sensed by a speed detector which develops a voltage proportional to the sensed speed. A comparator is provided to detect when the voltage reaches a predetermined value to complete a feedback control circuit to feed the voltage to the second motor. A counter torque is produced in the second motor to retard the torque produced by the first motor. By the feedback operation the supply reel is subsequently driven at a constant speed. The tape transport speed initially increases until the feedback control is effected and subsequently decreases as a function of time as the tape approaches its end to allow a tape stopping mechanism a sufficient time to operate before the tape end overruns the transducer head.
Abstract translation: 磁带记录和/或再现装置包括分别用于驱动卷取和供给卷轴的第一和第二马达。 第一个电机在快进模式期间通电，以高于正常播放速度的速度驱动收纸卷轴，以将带盒从供带盘送入收纸卷轴。 供应卷轴的旋转速度最初较低并且随着时间的推移而增加，由速度检测器检测，速度检测器产生与感测速度成比例的电压。 提供比较器以检测电压何时达到预定值以完成反馈控制电路以将电压馈送到第二电动机。 在第二电动机中产生逆转矩以延迟由第一电动机产生的转矩。 通过反馈操作，随后以恒定的速度驱动供带盘。 磁带传送速度最初增加，直到反馈控制被实现为止，并且随着磁带接近其端部随后随着时间的推移而减小，以允许磁带停止机构在磁带端超过传感器头之前有足够的时间来操作。
-
公开(公告)号：US4405883A
公开(公告)日：1983-09-20
申请号：US287985
申请日：1981-07-29
Applicant: Kazutaka Ashida
Inventor： Kazutaka Ashida
CPC classification number: G11B15/48 , G11B15/026
Abstract: An apparatus for rapidly and positively stopping the rotations of first and second tape reels which are driven independently, without introducing slack or damages to a recording medium of a tape form wound by the first and second tape reels. The control system for this apparatus uses digital signals.
Abstract translation: 一种用于快速且积极地停止第一和第二磁带盘的旋转的装置，其被独立地驱动，而不会引起松弛或损坏由第一和第二磁带卷绕的磁带形式的记录介质。 该装置的控制系统使用数字信号。
