Magnetic tape video recorder with a one head drum
    11.
    发明授权
    Magnetic tape video recorder with a one head drum 失效
    磁带录像机,带一个磁头鼓

    公开(公告)号:US4642707A

    公开(公告)日:1987-02-10

    申请号:US582075

    申请日:1984-02-21

    摘要: A magnetic tape recorder for video recording and video playback with a one head drum and a head support plate. According to the invention the head support plate is point supported and spring attached to a base plate. The head support plate is movable around two rotation axes and is actuated with an electromagnetic drive means. The one motion cooperates with a dynamic track following circuit for providing dynamic height level correction of the head and allows to capture tracks during replay, which deviate from the parallel inclined position or, in case of a course of the track deviating from the tape recording speed resulting in a trick palyback. The motion around the other axis allows a controlled and regulated azimuth offset of the neighboring tracks during playback, which are recorded with continuously alternating azimuth angle.

    摘要翻译: 一种磁带录像机,用于使用一个磁头鼓和头部支撑板进行视频录制和视频播放。 根据本发明,头支撑板是点支撑的,并且弹簧附接到基板。 头部支撑板可绕两个旋转轴线移动,并用电磁驱动装置致动。 一个动作与动态跟踪电路配合,用于提供磁头的动态高度电平校正,并且允许在重放期间捕获轨迹,该轨迹偏离平行倾斜位置,或者在轨道偏离磁带记录速度的情况下 导致了一个诡计。 围绕另一轴的运动允许在重放期间相邻轨道的受控和调节的方位偏移,其以连续交替的方位角记录。

    Multitrack tape device using a movable magnetic head with a planar
surface and including a tape supporting device
    12.
    发明授权
    Multitrack tape device using a movable magnetic head with a planar surface and including a tape supporting device 失效
    使用具有平坦表面并包括带支撑装置的可移动磁头的多轨磁带装置

    公开(公告)号:US5978188A

    公开(公告)日:1999-11-02

    申请号:US11763

    申请日:1998-03-30

    摘要: A tape recorder and/or a playback device for a multitrack tape utilizes a magnetic head having active parts for recording and/or reading microtracks with the active parts being arranged in a two-dimensional matrix within a substantially planar surface of the magnetic head. A pressure device assures contact between the microtracks and the active parts by acting on a backside surface of the tape opposite to the front side surface containing the magnetic head. A structure allows for positioning the magnetic head in front of either one of at least two macrotracks which bundle addressed microtracks. A portion of the tape surface is supported adjacent to the macrotrack bundling the addressed microtracks to prevent unwanted tape deformation.

    摘要翻译: PCT No.PCT / EP97 / 03285 371日期1998年3月30日 102(e)1998年3月30日PCT 1997年6月23日PCT公布。 公开号WO98 / 00838 日期1998年1月8日一种用于多轨磁带的磁带录音机和/或播放装置利用具有有源部分的磁头,用于记录和/或读取微轨迹,活动部件被布置在二维矩阵的基本平坦的表面内 磁头。 压力装置通过作用在与包含磁头的前侧表面相对的带的背面上来确保微轨道和有源部分之间的接触。 结构允许将磁头定位在捆绑寻址的微轨道的至少两个宏轨道中的任一个的前面。 磁带表面的一部分被支撑在与所寻址的微轨道捆绑的宏轨道附近以防止不期望的磁带变形。

    Method of determining the elapsed and/or still available playing time of
a magnetic tape
    13.
    发明授权
    Method of determining the elapsed and/or still available playing time of a magnetic tape 失效
    确定磁带的经过和/或仍然可用的播放时间的方法

    公开(公告)号:US4727446A

    公开(公告)日:1988-02-23

    申请号:US928287

    申请日:1986-09-22

    申请人: Jurgen Kaaden

    发明人: Jurgen Kaaden

    IPC分类号: G11B27/17 G11B27/34 G11B15/00

    摘要: A method of determining the elapsed and/or still available playing time of a magnetic tape. First, the time the spindle takes to rotate once is measured. The number of coils on the spindle are calculated from the spindle diameter, tape thickness, and duration of rotation. The results are entered in a counter that from that time on adds or subtracts one pulse per winding direction and per revolution. The counting results are compared with a table of times layed out in one-minute steps and the resulting minute values displayed.

    摘要翻译: PCT No.PCT / EP86 / 00030 Sec。 371日期1986年9月22日 102(e)1986年9月22日PCT PCT 1月24日PCT公布。 出版物WO86 / 04722 日期:1986年8月14日。一种确定磁带的经过和/或仍然可用播放时间的方法。 首先,测量主轴旋转一次的时间。 主轴上的线圈数由主轴直径,磁带厚度和旋转持续时间计算。 结果进入计数器,从那时起,每个绕组方向和每转一次加一个脉冲。 将计数结果与一分钟的时间表进行比较,并显示所得到的分钟值。

    Combined longitudinal and transversal tracking
    14.
    发明授权
    Combined longitudinal and transversal tracking 失效
    组合纵向和横向跟踪

    公开(公告)号:US6122134A

    公开(公告)日:2000-09-19

    申请号:US990761

    申请日:1997-12-15

    IPC分类号: G11B20/12 G11B21/10 G11B5/584

    CPC分类号: G11B21/10

    摘要: An information storage medium has at least a longitudinal bundle comprising three servo tracks (3, 4, 5). The bundle is arranged in consecutive tracking units (T(N)) of a determined longitudinal length. Surfaces of said servo tracks present either a first or a second characteristic (6, 7) and vary in size and distribution inside the tracking units. The bundles may contain longitudinally stored identification information. Methods for obtaining tracking signals indicating a transversal offset between a reading head and the bundle and for retrieving identification information are disclosed. Also methods for obtaining tracking units in which transversal tracking code is combined with distinct information are described.

    摘要翻译: 信息存储介质至少具有包括三个伺服轨道(3,4,5)的纵向束。 捆束以确定的纵向长度的连续跟踪单元(T(N))排列。 所述伺服磁道的表面呈现第一或第二特征(6,7),并且跟踪单元内的尺寸和分布变化。 捆可以包含纵向存储的标识信息。 公开了用于获得指示读取头和束之间的横向偏移并用于检索识别信息的跟踪信号的方法。 还描述了用于获得横向跟踪代码与不同信息组合的跟踪单元的方法。

    Method and apparatus for the recording of signals
    15.
    发明授权
    Method and apparatus for the recording of signals 失效
    用于记录信号的方法和装置

    公开(公告)号:US5875061A

    公开(公告)日:1999-02-23

    申请号:US425121

    申请日:1995-04-19

    CPC分类号: G11B5/00817 G11B15/1875

    摘要: Method and apparatus for recording a digital signal wherein the recording rate is higher than the available data rate. In such a situation, the available excess recording capability is used for extending the playing time by the existing storage capacity of a magnetic tape is better utilized. In the present embodiment, playback time is increased by use of a constant tape transport speed with part-segmented helical track recording and a bidirectional recording operation during recording and replay.

    摘要翻译: 用于记录数字信号的方法和装置,其中记录速率高于可用数据速率。 在这种情况下,利用现有的磁带的存储容量,可以利用可用的多余记录能力来延长播放时间。 在本实施例中,通过在记录和重放期间使用具有部分分段螺旋轨迹记录的恒定磁带传输速度和双向记录操作来增加播放时间。

    Head track alignment arrangement in a magnetic tape recorder
    16.
    发明授权
    Head track alignment arrangement in a magnetic tape recorder 失效
    磁带录像机中的磁道对准布置

    公开(公告)号:US5253130A

    公开(公告)日:1993-10-12

    申请号:US692390

    申请日:1991-04-25

    IPC分类号: G11B15/467 G11B5/58

    CPC分类号: G11B15/4676

    摘要: In a calibration operation mode of a magnetic tape recorder for helical track recording, employing the R-DAT standard, a first magnitude of a pilot signal reproduced in a first magnetic head from a pilot signal recorded in a center track with respect to the first magnetic head is obtained. A second magnitude of a pilot signal reproduced in a second magnetic head from a pilot signal recorded in a center track with respect to the second magnetic head is also obtained. A ratio between the first and second magnitudes is calculated and stored prior to normal playback mode of operation. During normal playback mode of operation, the stored ratio is used for normalizing a first difference signal, between crosstalk pilot signals that are reproduced in one of the first and second magnetic heads relative to a second difference signal, between crosstalk pilot signals that are reproduced in the other one of the first and second magnetic heads. The first and second difference signals are applied to a capstan motor for reducing a head-track misalignment error.

    摘要翻译: 在采用R-DAT标准的用于螺旋磁道记录的磁带记录仪的校准操作模式中,从记录在中心轨道上的导频信号的第一磁头中再现的第一幅度的第一幅度相对于第一磁 头被取得。 还获得了从记录在中心轨道上的相对于第二磁头的导频信号在第二磁头中再现的第二幅度的导频信号。 在正常播放操作模式之前,计算并存储第一和第二幅度之间的比率。 在正常播放操作模式期间,存储比率用于在第一差分信号之间,在第一和第二磁头之一相对于第二差分信号在一个中再现的串扰导频信号之间,在 第一和第二磁头中的另一个。 第一和第二差分信号被施加到主导轴电动机以减小磁头轨迹失准误差。

    Videorecorder with rotating head drum and video heads
    17.
    发明授权
    Videorecorder with rotating head drum and video heads 失效
    带旋转头鼓和视频头的录像机

    公开(公告)号:US4914531A

    公开(公告)日:1990-04-03

    申请号:US304890

    申请日:1989-01-30

    IPC分类号: H04N5/93 G11B15/14 G11B15/18

    CPC分类号: G11B15/14 G11B15/1875

    摘要: The invention concerns a videorecorder with a rotating head drum (KT) that has video heads (K1 & K2) with a magnetic tape (B) looped partly around them mounted on it, with at least one pulse generator (M) mounted on the head drum, with at least one sensor (S) that generates a head-shift signal that switches from one video head to the other, and with a control head (KK) for scanning the vertical-synchronization signal during playback. In the playback mode the time between the signal supplied to the sensor and the vertical-synchronization signal is measured and compared with a reference, and a criterion for controlling the position in time of the head-shift signal is derived from the comparison.

    摘要翻译: 本发明涉及一种具有旋转磁头鼓(KT)的录像机,其具有视频磁头(K1和K2),其中磁带(B)部分环绕其安装在其上,其中至少一个脉冲发生器(M)安装在磁头 鼓,具有产生从一个视频头切换到另一个的头移信号的至少一个传感器(S),以及用于在回放期间扫描垂直同步信号的控制头(KK)。 在播放模式中,测量提供给传感器的信号与垂直同步信号之间的时间,并将其与参考值进行比较,并从比较中导出用于控制头移信号的时间位置的标准。