公开(公告)号：EP0549845A1

公开(公告)日：1993-07-07

申请号：EP92105131.4

申请日：1992-03-25

Applicant: TANDBERG DATA A/S

Inventor： Pahr, Per Olaf

IPC: G11B27/26 ,  G11B23/34 ,  G11B23/087 ,  G11B5/55 ,  G11B15/60 ,  G11B15/08

CPC classification number: G11B15/08 ,  G11B5/5508 ,  G11B7/003 ,  G11B23/38 ,  G11B27/26

Abstract: A method and apparatus performs detection of an edge and detection of holes or other data patterns on a tape or other magnetic or optical medium. An array of photodetectors in an integrated circuit chip senses the intensity of light illuminating the chip with the tape running between a light source and the photodetectors. The holes or the other data patterns are sensed on the tape based on a comparison between detected light intensities with a programmable reference level. In addition, areas which may normally be sensed as a hole are discarded if these areas fall within a specified tolerance.

Abstract translation: 一种方法和装置执行边缘的检测和带或其他磁或光介质上的孔或其它数据图案的检测。 集成电路芯片中的一组光电检测器感测在光源和光电检测器之间运行的带照射芯片的光的强度。 基于检测到的具有可编程参考电平的光强度之间的比较，在磁带上检测孔或其它数据图案。 此外，如果这些区域落在规定的公差范围内，那么通常可以被感测为孔的区域被丢弃。

公开(公告)号：EP0616319A3

公开(公告)日：1994-12-14

申请号：EP93118132.5

申请日：1993-11-09

Applicant: TANDBERG DATA A/S

Inventor： Pahr, Per Olaf

IPC: G11B5/55 ,  G11B5/584

CPC classification number: G11B5/584 ,  G11B5/00878

Abstract: A method and apparatus for positioning a magnetic servo head relative to a servo track on a traveling magnetic tape both make use of the observation that a given tape in a given tape drive unit exhibits transverse tape movements during operation which constitute a "signature" waveform for the coupled tape cartridge and drive unit. In the method and apparatus, the transverse movements of a traveling tape in a drive unit are monitored to obtain the aforementioned waveform which is characteristic of the transverse movements for that tape, and the waveform is stored. The positioning of the servo head is controlled relative to a servo track on the tape using a control signal generated according to any known track seek algorithm. The stored waveform is recalled and is superimposed on the control signal, thereby significantly increasing the accuracy of the positioning of the servo head, which in turn increases the accuracy of positioning of the write/read head.

公开(公告)号：EP0555511A1

公开(公告)日：1993-08-18

申请号：EP92105132.2

申请日：1992-03-25

Applicant: TANDBERG DATA A/S

Inventor： Pahr, Per Olaf

IPC: G11B5/55 ,  G11B5/584

CPC classification number: G11B5/5508 ,  G11B5/584 ,  G11B15/087 ,  G11B27/36

Abstract: A method and apparatus performs the detection of an edge of a tape and further controls the read/write head to position itself relative to the detected edge. An array of photodetectors in an integrated circuit chip senses the intensity of light illuminating the chip with the tape running between the light source and the photodetectors. A light-to-dark transition is formed which is indicative of the edge of the tape.

Abstract translation: 的方法和装置执行带和进一步控制读/写头的边缘的检测本身相对于所检测到的边缘来定位。 光电检测器在集成电路芯片的阵列感测的光照射与光源和光检测器之间的走带的芯片强度。 光到暗过渡是所有其指示带的边缘形成。

公开(公告)号：EP0616319A2

公开(公告)日：1994-09-21

申请号：EP93118132.5

申请日：1993-11-09

Applicant: TANDBERG DATA A/S

Inventor： Pahr, Per Olaf

IPC: G11B5/55 ,  G11B5/584

CPC classification number: G11B5/584 ,  G11B5/00878

Abstract: A method and apparatus for positioning a magnetic servo head relative to a servo track on a traveling magnetic tape both make use of the observation that a given tape in a given tape drive unit exhibits transverse tape movements during operation which constitute a "signature" waveform for the coupled tape cartridge and drive unit. In the method and apparatus, the transverse movements of a traveling tape in a drive unit are monitored to obtain the aforementioned waveform which is characteristic of the transverse movements for that tape, and the waveform is stored. The positioning of the servo head is controlled relative to a servo track on the tape using a control signal generated according to any known track seek algorithm. The stored waveform is recalled and is superimposed on the control signal, thereby significantly increasing the accuracy of the positioning of the servo head, which in turn increases the accuracy of positioning of the write/read head.

Abstract translation: 用于在移动磁带上相对于伺服磁道定位磁性伺服磁头的方法和装置都利用了在给定磁带驱动单元中的给定磁带在操作期间显示横向磁带移动的观察结果，其构成了用于 耦合的带盒和驱动单元。 在该方法和装置中，监视行驶带在驱动单元中的横向移动，以获得作为该带的横向移动特性的上述波形，并且存储波形。 使用根据任何已知的追踪算法生成的控制信号，相对于磁带上的伺服磁道来控制伺服磁头的定位。 存储的波形被调用并且叠加在控制信号上，从而显着提高伺服头的定位精度，这又提高了写/读头的定位精度。

公开(公告)号：EP0557552A1

公开(公告)日：1993-09-01

申请号：EP92103289.2

申请日：1992-02-26

Applicant: TANDBERG DATA A/S

Inventor： Pahr, Per Olaf ,  Rubas, Ladislav

IPC: G11B5/008

CPC classification number: G11B5/00817 ,  G11B5/024

Abstract: A method for erasing information from a magnetic tape, said tape being divided into at least two physical partitions (1,2),(1',2'), each physical partition including a plurality of data tracks carrying recorded data or the like and at least one set of servo tracks (3),(3') carrying position information and dedicated to an area between the data tracks, is characterized in that at least a first one of said physical partitions is erased during the movement of the tape in a forward direction defined by moving the tape towards the End of Tape, and at least a second one of said physical partitions is erased during the movement of the tape either in backward direction defined by moving the tape towards the Beginning of Tape or in the forward direction from the Beginning of Tape to the End of Tape.

Abstract translation: 一种用于从磁带中擦除信息的方法，所述磁带被划分为至少两个物理分区（1,2），（1'，2'），每个物理分区包括携带记录数据等的多个数据轨道， 携带位置信息并专用于数据磁道之间的区域的至少一组伺服磁道（3），（3'）的特征在于，在磁带移动期间，至少第一个所述物理分区被擦除 通过将带移动到磁带末端而限定的向前方向，并且在带的移动期间，至少第二个所述物理分区被擦除，所述向后方向通过将磁带移动到磁带开始或向前 从磁带开始到磁带结束的方向。

公开(公告)号：EP0402538A1

公开(公告)日：1990-12-19

申请号：EP89203346.5

申请日：1989-06-16

Applicant: TANDBERG DATA A/S

Inventor： Pahr, Per Olaf

IPC: G11B5/024 ,  G11B5/09 ,  G11B19/04

CPC classification number: G11B5/09 ,  G11B5/024 ,  G11B19/04

Abstract: Löscheinrichtung für einen Magnetschichtspeicher mit Relativbe­wegung des Speichermediums gegenüber einem kombinierten Magnet­kopfsystem einschließlich eines magnetischen Löschkopfes (EH) mit einer einteiligen Spulenwicklung. Beide Wicklungsenden des Löschkopfes sind über je eine Induktivität (L1, L2) an eine Versorgungsgleichspannung (+ VB) und über je eine Schaltstufe (Q1 bzw. Q2) auf ein von der Gleichspannung abweichendes Poten­tial legbar. Die Schaltstufen sind durch komplementäre Steuer­impulsfolgen (A, B) alternativ für identische Zeitspannen akti­vierbar. Diese Ansteuerschaltung für den Löschkopf bildet einen Gleichstrom/Wechselstromwandler mit symmetrischer Ansteuerung des Löschkopfes.

Abstract translation: 用于磁性层存储器的擦除装置，其中存储介质相对于组合磁头系统相对移动，包括具有一部分线圈绕组的磁性擦除头（EH）。 擦除头的两个绕线端可以连接到直流 电源电压（+ VB），通过相应的电感（L1，L2）和除直流电压之外的电位。 电压经由相应的开关级（Q1或Q2）。 可以通过互补控制脉冲序列（A，B）交替地激活切换级相同的时间段。 用于擦除头的该驱动电路形成具有擦除头的平衡驱动的ac / dc转换器。

公开(公告)号：EP0402538B1

公开(公告)日：1995-03-08

申请号：EP89203346.5

申请日：1989-06-16

Applicant: TANDBERG DATA A/S

Inventor： Pahr, Per Olaf

IPC: G11B5/024 ,  G11B5/09 ,  G11B19/04

CPC classification number: G11B5/09 ,  G11B5/024 ,  G11B19/04

公开(公告)号：EP0569610A1

公开(公告)日：1993-11-18

申请号：EP92108079.2

申请日：1992-05-13

Applicant: TANDBERG DATA A/S

Inventor： Strand, Steinar J., c/o Tandberg Data A/S ,  Solhjell, Erik ,  Pahr, Per Olaf

IPC: G11B5/55

CPC classification number: G11B5/584 ,  G11B5/5508 ,  G11B20/1833

Abstract: A method for determining the servo track pair position and longitudinal tape position for a tape using dedicated servo format, said tape including at least one set of data tracks and dedicated servo tracks, wherein adjacent servo tracks are defined by longitudinal lines through the edges of erased or non-recorded tape portions, is characterized in that information about servo track pair numbers and/or servo sample numbers is recorded into said tape portions and is decoded and read back together with signals from said servo track, wherein the information is recorded in a digital manner by using a digital block format of data blocks requiring preferentially less bytes per block than a data block provided on said data tracks. If information about longitudinal tape position is not required, an analog manner using a fixed set of predetermined frequencies.

Abstract translation: 一种用于确定性采矿伺服磁道对的位置和纵向带位置用于使用专用伺服格式的磁带的方法，所述带包括至少一组数据道和专用伺服磁道，worin相邻伺服磁道是用纵线通过的擦除的边缘限定 或非记录的磁带部分，其特点是约伺服磁道对编号和/或伺服样本数DASS信息记录到所述带部和被解码，并从所述伺服轨迹信号回到一起读，worin的信息被记录在一个 通过使用数据块需要每块优先更少字节比设置在所述数据磁道的数据块的数字块格式的数字方式。 如果使用固定的组预定频率的约纵向磁带位置信息不需要类似的方式。

公开(公告)号：EP0552600A1

公开(公告)日：1993-07-28

申请号：EP93100073.1

申请日：1993-01-05

Applicant: TANDBERG DATA A/S

Inventor： Pahr, Per Olaf

IPC: G11B23/50 ,  G11B33/14 ,  H05K9/00 ,  H05F3/02

CPC classification number: G11B23/50 ,  G11B33/1493 ,  H05F3/02 ,  H05K9/0067

Abstract: A magnetic tape drive for magnetic tape housed within a cartridge, including a rectangular access through which the cartridge is inserted into the drive and a wiping member operatively positioned at an edge of the access such that the cartridge is contacted during insertion into the drive, the wiping member being so constructed and coupled to electrical ground that electrostatic charge on the cartridge is bled to electrical ground.

Abstract translation: 一种磁带驱动器，用于容纳在盒中的磁带，包括矩形通道，盒通过该磁带插入驱动器中，擦拭部件可操作地定位在通道的边缘，使得盒在插入驱动器期间接触， 擦拭构件被构造并耦合到电接地，使得盒上的静电电荷流到电气接地。

公开(公告)号：EP0557552B1

公开(公告)日：1997-04-16

申请号：EP92103289.2

申请日：1992-02-26

Applicant: TANDBERG DATA A/S

Inventor： Pahr, Per Olaf ,  Rubas, Ladislav

IPC: G11B5/008

CPC classification number: G11B5/00817 ,  G11B5/024