公开(公告)号：US20180061448A1

公开(公告)日：2018-03-01

申请号：US15244508

申请日：2016-08-23

申请人： International Business Machines Corporation

发明人： Giovanni Cherubini ,  Mark A. Lantz ,  Angeliki Pantazi

IPC分类号： G11B15/52 ,  G05B17/02 ,  G06F17/16 ,  G11B15/43

CPC分类号： G11B15/43 ,  G05B11/06 ,  G11B15/32 ,  G11B15/48

摘要： A tape transport control system with enhanced regulation of tape tension and velocity over the entire length of the tape. For example, a closed-loop control system for controlling a tape transport includes circuitry adapted to output a signal representing a tape velocity at a tape head, circuitry adapted to output a signal representing a tape velocity at the first tape reel and a signal representing a tape velocity at the second tape reel, circuitry adapted to output a signal representing a tape tension, and circuitry adapted to, based on the received signals, generate control signals to control the tape velocity at least at one of the tape head, the first tape reel, the second tape reel, and the tension of the tape, using controller gains that depend on a longitudinal position of the tape, and to implement a system transfer function that is approximately independent of the longitudinal position.

公开(公告)号：US08917472B2

公开(公告)日：2014-12-23

申请号：US13943710

申请日：2013-07-16

申请人： International Business Machines Corporation

发明人： Atsushi Abe ,  Takashi Katagiri ,  Hironobu Nagura ,  Yutaka Oishi

IPC分类号： G11B15/46 ,  G11B15/48 ,  G11B15/44

CPC分类号： G11B15/026 ,  G11B5/09 ,  G11B15/442 ,  G11B15/46 ,  G11B15/48

摘要： Provided are a storage device, method, and program for controlling a tape speed to manage a tape drive buffer. A tape speed is increased from a current tape speed to a target tape speed on a predetermined speed-change timing to control the reading or writing of data between the buffer and the tape medium.

摘要翻译： 提供了一种用于控制磁带速度以管理磁带驱动器缓冲器的存储装置，方法和程序。 在预定的速度改变定时，磁带速度从当前磁带速度增加到目标磁带速度，以控制缓冲器和磁带介质之间的数据读取或写入。

公开(公告)号：USRE41125E1

公开(公告)日：2010-02-16

申请号：US10883196

申请日：2004-07-01

申请人： Je Hyung Lee ,  Soo Kyung Kim ,  Sang Joon Woo ,  Tae Seok Yang

发明人： Je Hyung Lee ,  Soo Kyung Kim ,  Sang Joon Woo ,  Tae Seok Yang

IPC分类号： H04N5/76 ,  H04N5/92

CPC分类号： H04N5/783 ,  G11B5/0086 ,  G11B5/09 ,  G11B5/5927 ,  G11B15/125 ,  G11B15/1875 ,  G11B15/4673 ,  G11B15/48 ,  G11B15/52 ,  G11B27/005 ,  G11B27/107 ,  G11B27/3027 ,  G11B27/32 ,  G11B27/324 ,  G11B2220/90 ,  G11B2220/91 ,  H04N5/782 ,  H04N5/78206 ,  H04N5/78266 ,  H04N5/9262 ,  H04N9/7973 ,  H04N9/8042 ,  H04N9/8205 ,  H04N19/61

摘要： An apparatus and method for controlling recording and reproduction in a video cassette tape recorder are disclosed. The apparatus is capable of, in a recording mode, separating specific data for speed-varied reproduction from compressed digital video signals, recording them on designated tracks, recording position information of the designated tracks on a control track by an index head or recording position information of recording position-synchronized blocks at the starting portions of the designated tracks recorded with the specific data, and in a speed-varied reproduction mode, controlling a capstan servo speed so as to maintain the travel of a magnetic tape at a normal speed and periodically or non-periodically accelerate or decelerate it where specific data for varied-speed have been recorded periodically or non-periodically on predetermined portions of tracks, thereby making heads travel repeatedly at the normal speed and the high speed and thereby detect continuously the specific tracks for varied-speed. A repeatability of reproduced video at a varied speed is obtained without any deterioration in picture quality, because of recording of the specific data for speed-varied reproduction and the continuous detection of the specific data in the speed-varied reproduction.

摘要翻译： 公开了一种用于控制盒式录像机中的记录和再现的装置和方法。 该装置能够以记录模式将压缩数字视频信号中的速度变化再现的特定数据分离，将其记录在指定轨道上，通过索引头或记录位置信息在控制轨迹上记录指定轨迹的位置信息 在用特定数据记录的指定轨道的起始部分处记录位置同步块，并且在速度变化的再现模式中，控制主导轴伺服速度，以便将磁带的行进保持在正常速度并且周期性地 或者在轨道的预定部分周期性或非周期性地记录用于变速的特定数据的非周期性加速或减速，从而使头部以正常速度和高速重复行进，从而连续检测特定轨道 变速。 由于记录速度变化再现的特定数据和在速度变化再现中连续检测特定数据，所以可以获得不同速度的再现视频的重复性，而不会降低图像质量。

公开(公告)号：US07140570B2

公开(公告)日：2006-11-28

申请号：US11141041

申请日：2005-06-01

申请人： Jun-young Kim ,  Byeng-bae Park ,  Jae-hoon Sim ,  Seung-woo Lee ,  Hyeong-seok Choi ,  Jeong-hyeob Oh

发明人： Jun-young Kim ,  Byeng-bae Park ,  Jae-hoon Sim ,  Seung-woo Lee ,  Hyeong-seok Choi ,  Jeong-hyeob Oh

IPC分类号： G03B1/04

CPC分类号： G11B15/22 ,  G11B15/43 ,  G11B15/48

摘要： Disclosed are a reel brake device and a magnetic recording and reproducing apparatus having the same. The reel brake device comprises a tension band mounted on an outer circumference of a reel disc to control tension, the reel disc which is rotatably mounted on the main chassis to drive a tape reel of a tape cassette, and a brake unit fixed on the main chassis to help the tension band be in contact with the outer circumference of the reel disc. This can replace a conventional brake unit having a complicated structure, and therefore, the number of component parts can be reduced.

公开(公告)号：US07114673B2

公开(公告)日：2006-10-03

申请号：US10440156

申请日：2003-05-19

申请人： Naohisa Tanabe

发明人： Naohisa Tanabe

IPC分类号： B65H59/38

CPC分类号： G11B15/48

摘要： A stop command detecting unit detects an operation transition from fast forwarding/rewinding modes to a stop mode, a take-up side reel braking unit and a supply side reel braking unit start a braking operation based on the stop command, and a driving motor of the take-up side reel is driven at a specified current value set by a motor current value setting unit for a specified time set by a current adding time setting unit to provide the take-up side reel with rotary torque in the winding direction. Hence, the supply side reel rotates together with the take-up side reel until the supply side reel is stopped, thereby preventing occurrence of a slack on the tape.

公开(公告)号：US06275348B1

公开(公告)日：2001-08-14

申请号：US09126992

申请日：1998-07-31

申请人： Robert Edward Walsh

发明人： Robert Edward Walsh

IPC分类号： G11B1546

CPC分类号： G11B15/54 ,  G11B15/48

摘要： A magnetic tape recording/playback apparatus, and a method of operating the apparatus, which minimises or eliminates the tape damage which is caused by the tape-driving capstan spinning and skidding across the tape at start-up. Initial acceleration of the capstan is held to a relatively low level when capstan speed is below a predetermined value and capstan acceleration is at a higher level at capstan speeds above said predetermined value. Intermediate levels of capstan acceleration can be set for intermediate speeds.

摘要翻译： 一种磁带记录/重放装置，以及操作该装置的方法，其最小化或消除了由启动时的磁带驱动主导轴旋转和打滑而导致的磁带损坏。 当绞盘速度低于预定值时，主导轴的初始加速度保持在相对较低的水平，主导轴加速度在主轴速度高于所述预定值时处于较高水平。 可以为中间速度设置中等级别的主导轴加速度。

公开(公告)号：US06208096B1

公开(公告)日：2001-03-27

申请号：US09236959

申请日：1999-01-25

申请人： Peter Mahr ,  Klaus Oldermann

发明人： Peter Mahr ,  Klaus Oldermann

IPC分类号： B65H5938

CPC分类号： G11B15/48

摘要： In a tape transport for recording and/or reproducing signals by means of a recording medium using separate winding motors for driving the winding plates, the drive of the winding motors servo units is constructed as open-loop control devices and/or closed-loop control devices. Such servo units can advantageously be used for open-loop control and/or closed-loop control of the drive of the winding motor even during a braking operation.

摘要翻译： 在用于通过使用单独的绕组电机驱动绕组板的记录介质来记录和/或再现信号的磁带传输中，绕组电动机伺服单元的驱动被构造为开环控制装置和/或闭环控制 设备。 这样的伺服单元即使在制动操作期间也可以有利地用于绕组电机的驱动的开环控制和/或闭环控制。

公开(公告)号：US5909335A

公开(公告)日：1999-06-01

申请号：US786081

申请日：1997-01-17

申请人： Erik Hardeng ,  Georg Boasson

发明人： Erik Hardeng ,  Georg Boasson

IPC分类号： G11B15/48 ,  G11B15/54

CPC分类号： G11B15/54 ,  G11B15/48

摘要： A speed servo control for a tape drive comprising a take up reel having tape wound therearound, the tape extending to a supply reel and wound therearound. A flutter roller is arranged to press said tape that extends between the take up reel and the supply reel to rotate with circulation of the tape. A first tachometer is connected to said take up reel to rotate therewith. A second tachometer is connected to the flutter roller to rotate therewith, the first and second tachometers connected to a servo system for controlling the speed of the take up reel drive motor according to the select speed of the tape. The second tachometer from the flutter roller normally controls the servo for controlling the take up reel speed. A mechanism is provided for ignoring a tachometer signal from the second tachometer and controlling using the first tachometer, until the tape is tensioned against the flutter roller after start up. The mechanism for ignoring is advantageously a third tachometer connected to the supply reel and a pulse detector sensing pulses from the third tachometer and signal connected to the switch such that when a certain number of tachometer pulses are sensed from the third tachometer, or a certain stable frequency of pulses is sensed from the third tachometer, the switch is switched from the first tachometer (take up reel) as input, to the second tachometer (flutter roller) as input to the servo system.

摘要翻译： 一种用于磁带驱动器的速度伺服控制器，其包括卷绕在其周围的磁带的卷取卷轴，磁带延伸到供带盘并在其周围缠绕。 摆动辊布置成按压所述带，其在卷带盘和供带盘之间延伸以随着带的循环而旋转。 第一转速表连接到所述卷取卷轴上以与其一起旋转。 第二转速计连接到颤振辊以与其一起旋转，第一和第二转速表连接到伺服系统，用于根据磁带的选择速度控制卷取驱动马达的速度。 来自颤振辊的第二转速表通常控制伺服控制卷取卷轴速度。 提供了一种用于忽略来自第二转速计的转速计信号并且使用第一转速计进行控制的机构，直到在启动之后将带张紧到挡风辊上。 用于忽视的机构有利地是连接到供带盘的第三转速表和检测来自第三转速计的脉冲和连接到开关的信号的脉冲检测器，使得当从第三转速计感测到一定数量的转速计脉冲时，或者某一稳定 从第三转速表感测到脉冲频率，开关作为输入从第一转速表（卷取机）切换到作为伺服系统的输入的第二转速表（颤振辊）。

公开(公告)号：US5786956A

公开(公告)日：1998-07-28

申请号：US789834

申请日：1997-01-28

申请人： Kunio Shimizu ,  Yoshitomo Nakano

发明人： Kunio Shimizu ,  Yoshitomo Nakano

IPC分类号： G11B15/18 ,  G11B15/32 ,  G11B15/46 ,  G11B15/48 ,  G11B15/54 ,  G11B15/52

CPC分类号： G11B15/18 ,  G11B15/1883 ,  G11B15/32 ,  G11B15/46 ,  G11B15/48 ,  G11B15/54

摘要： A recording and/or reproducing apparatus which includes no pinch roller and no capstan and wherein the converging time to a rated speed upon starting of feeding of a tape can be reduced and the tape can be fed stably at the rated speed during recording and/or reproduction of the tape. A rotary encoder for detecting a period of rotation is disposed between a recording and/or reproducing head and a take-up side reel, and a deviation from a predetermined reference value or a feeding position of the tape is calculated from the period of rotation detected by the rotary

摘要翻译： 一种记录和/或再现装置，其不包括夹送辊和没有绞盘，并且其中可以减少在开始送带时的会聚时间到额定速度，并且可以在记录期间以额定速度稳定地进给带和/或 复制磁带。 用于检测旋转周期的旋转编码器设置在记录和/或再现头与卷取侧卷轴之间，并且从检测到的旋转周期计算与预定基准值或带的馈送位置的偏差 通过旋转

公开(公告)号：US5587789A

公开(公告)日：1996-12-24

申请号：US227281

申请日：1994-04-13

申请人： Je H. Lee ,  Soo K. Kim ,  Sang J. Woo ,  Tae S. Yang

发明人： Je H. Lee ,  Soo K. Kim ,  Sang J. Woo ,  Tae S. Yang

IPC分类号： G11B20/10 ,  G11B5/008 ,  G11B5/02 ,  G11B5/09 ,  G11B15/12 ,  G11B15/18 ,  G11B15/467 ,  G11B15/48 ,  G11B15/52 ,  G11B20/12 ,  G11B27/00 ,  G11B27/10 ,  G11B27/30 ,  G11B27/32 ,  H04N5/76 ,  H04N5/7826 ,  H04N5/783 ,  H04N5/91 ,  H04N5/92 ,  H04N5/926 ,  H04N5/93 ,  H04N9/79 ,  H04N9/797 ,  H04N9/804 ,  H04N9/82

CPC分类号： H04N5/783 ,  G11B15/1875 ,  G11B27/005 ,  G11B27/107 ,  G11B27/3027 ,  G11B27/32 ,  G11B27/324 ,  G11B5/0086 ,  G11B5/09 ,  G11B5/5927 ,  H04N19/61 ,  H04N5/782 ,  H04N5/9262 ,  G11B15/125 ,  G11B15/4673 ,  G11B15/48 ,  G11B15/52 ,  G11B2220/90 ,  G11B2220/91 ,  H04N5/78206 ,  H04N5/78266 ,  H04N9/7973 ,  H04N9/8042 ,  H04N9/8205

摘要： An apparatus and method for controlling recording and reproduction in a video cassette tape recorder are disclosed apparatus is capable of, in a recording mode, separating specific data for speed-varied reproduction from compressed digital video signals, recording them on designated tracks, recording position information of the designated tracks on a control track by an index head or recording position information of recording position-synchronized blocks at the starting portions of the designated tracks recorded with the specific data, and in a speed-varied reproduction mode, controlling a capstan servo speed so as to maintain the travel of a magnetic tape at a normal speed and periodically or non-periodically accelerate or decelerate it where specific data for varied-speed have been recorded periodically or non-periodically on predetermined portions of tracks, thereby making heads travel repeatedly at the normal speed and the high speed and thereby detect continuously the specific tracks for varied-speed. A repeatability of reproduced video at a varied speed is obtained without any deterioration in picture quality, because of recording of the specific data for speed-varied reproduction and the continuous detection of the specific data in the speed-varied reproduction.

摘要翻译： 公开了一种用于控制盒式磁带录像机中的记录和再现的装置和方法，所述装置能够在记录模式下将压缩数字视频信号中的速度变化再现的特定数据分离，将其记录在指定轨道上，记录位置信息 在通过特定数据记录的指定轨道的起始部分处的索引头或记录位置同步块的记录位置信息在控制轨道上，并且在速度变化再现模式中，控制主导轴伺服速度 以便以正常速度保持磁带的行进，并且在轨道的预定部分上周期性地或非周期性地记录用于变速的特定数据的周期性或非周期性加速或减速，从而使头部重复行进 以正常速度和高速度，从而连续检测特定的tr 阿克斯变速。 由于记录速度变化再现的特定数据和在速度变化再现中连续检测特定数据，所以可以获得不同速度的再现视频的重复性，而不会降低图像质量。