公开(公告)号：WO1989009988A1

公开(公告)日：1989-10-19

申请号：PCT/US1989001467

申请日：1989-04-07

Applicant: AMPEX CORPORATION ,  DOLBY, Dale, P. ,  MAGNUSSON, Steve, L. ,  ALDRICH, William, N. ,  PRICE, Larry, A.

Inventor： AMPEX CORPORATION

IPC: G11B05/588

CPC classification number: G11B5/53 ,  G11B5/588

Abstract: An improved head mounting assembly (10) includes a wedge-shaped head support member (14) which operates in conjunction with a photo-sensitive head positioning apparatus (26) to provide improved tracking for a transducing head mounted on the member.

Abstract translation: 改进的头部安装组件（10）包括与光敏头定位装置（26）结合操作的楔形头部支撑构件（14），以为安装在构件上的换能头提供改进的跟踪。

公开(公告)号：WO1996019799A2

公开(公告)日：1996-06-27

申请号：PCT/US1995016499

申请日：1995-12-19

Applicant: CONNER PERIPHERALS, INC.

Inventor： CONNER PERIPHERALS, INC. ,  MOORE, John ,  LARSEN, Keith

IPC: G11B05/588

CPC classification number: G11B5/584

Abstract: A system to write a servo signal pattern onto a recording medium incorporating a transducer with a full-width write head, and one or more slotted erase head(s). The full-width write head is used to record signals across the full width of the recording medium; the erase head(s) is used to erase "nulls" in the servo signal pattern. The resulting servo pattern has an extremely good match of signal characteristics between the different portions of the resulting signal pattern, since the recorded patterns were all written in the same pass by the same write head. The use of precisely fabricated and aligned erase head(s) results in a very accurate signal pattern.

Abstract translation: 一种将伺服信号图案写入到具有全宽写入头的换能器的记录介质和一个或多个开槽的擦除头上的系统。 全宽写入头用于在记录介质的整个宽度上记录信号; 擦除头用于擦除伺服信号模式中的“零点”。 所得到的伺服模式在所得到的信号模式的不同部分之间具有非常好的信号特性匹配，因为所记录的模式全部以相同的写头写入相同的遍历。 精确制造和对准的擦除头的使用导致非常精确的信号图案。

公开(公告)号：WO1986002190A1

公开(公告)日：1986-04-10

申请号：PCT/EP1985000460

申请日：1985-09-12

Applicant: DEUTSCHE THOMSON-BRANDT GMBH ,  KAADEN, Jürgen ,  SCHANDL, Hartmut

Inventor： DEUTSCHE THOMSON-BRANDT GMBH

IPC: G11B05/588

CPC classification number: G11B5/588

Abstract: A track post-control system for a magnetic tape unit with a number of magnetic heads (18), moving transversely to the tape direction and arranged on a rotating head wheel, the air gaps of the heads having an azimuthal angle which alternates symmetrically around a mean axis. The post-positioning of the track in the event of phase errors in playback operation is determined from the direction and size of the phase errors and converted into control values which serve for the post-positioning of the axial direction with the aid of an electromechanical converter.

Abstract translation: 一种用于具有多个磁头（18）的磁带单元的轨道后控制系统，其横向于磁带方向移动并且布置在旋转头轮上，磁头的气隙具有方位角，该方位角围绕 平均轴。 在重放操作中的相位错误的情况下轨迹的后定位是根据相位误差的方向和尺寸确定的，并且转换成用于借助于机电转换器来对轴向进行后定位的控制值 。

公开(公告)号：WO1996015529A1

公开(公告)日：1996-05-23

申请号：PCT/US1995014577

申请日：1995-11-09

Applicant: CONNER PERIPHERALS, INC.

Inventor： CONNER PERIPHERALS, INC. ,  LEWIS, Martyn, A. ,  STAVISH, Paul

IPC: G11B05/588

CPC classification number: G11B5/588 ,  G11B15/4678

Abstract: A system and method is disclosed wherein the position of a recording head is kept in proper alignment with the centerline of the track of a recording medium despite any tape wander. Further, the speed in which the tape propagates during both read and write modes is maintained. These functions are performed using the servo information written into the tracks of the recording medium. Tape propagation speed is controlled by adding the servo signal together. Head positioning is controlled by taking the difference between the servo signals. A method using Walsh Transforms is disclosed for normalizing the amplitude of the servo information used to accurately control head positioning and tape propagation speed.

Abstract translation: 公开了一种系统和方法，其中尽管任何磁带漫游，记录头的位置与记录介质的轨道的中心线保持正确对准。 此外，保持磁带在读取和写入模式期间传播的速度。 这些功能使用写入记录介质的轨道中的伺服信息进行。 通过将伺服信号加在一起来控制磁带传播速度。 通过取得伺服信号的差异来控制头位置。 公开了使用沃尔什变换的方法来归一化用于精确地控制磁头定位和磁带传播速度的伺服信息的幅度。

公开(公告)号：WO1991016704A1

公开(公告)日：1991-10-31

申请号：PCT/US1991002623

申请日：1991-04-19

Applicant: EXABYTE CORPORATION

Inventor： EXABYTE CORPORATION ,  PISCIOTTA, E., Christopher ,  GEORGIS, Steven, Philip

IPC: G11B05/588

CPC classification number: G11B15/4675 ,  G11B5/588 ,  G11B15/185

Abstract: A helical system (10) reads tracks (18) on a storage medium (12), including distorted tracks. Each track (18) comprises a plurality of blocks, with each block having unique block-identifying information. A servo system (84) causes a head (16C) to traverse predetermined original azimuthal paths (P0) across the medium (12) for reading the blocks recorded along each of the original path (P0). A controller (50) uses the block-identifying information to determine whether any blocks expected to be read during traversal of the original path (P0) were not read. If expected blocks were not read, the controller (50) repositions the medium (12) and directs that the medium (12) be re-read with the head (16C) offset until the expected blocks are actually read. During the re-read attempts, the read head (16C) is positionally offset to traverse modified azimuthal paths (P1, P2, P3, ... P10).

公开(公告)号：WO1990000796A1

公开(公告)日：1990-01-25

申请号：PCT/JP1989000689

申请日：1989-07-07

Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. ,  KOHRI, Toshiyuki ,  KUBO, Kanji

Inventor： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

IPC: G11B05/588

CPC classification number: G11B5/592 ,  G11B5/588 ,  G11B15/1875

Abstract: When first magnetic heads (3), (4) mounted via electro-mechanical conversion elements (7), (8), and second magnetic heads (5), (6) are both under the reproducing condition, correction value preparation means (15) produces a correction value based on a difference between a first tracking error signal obtained from first tracking error detect means (13) and a second tracking error signal obtained from second tracking error detect means (10). When the first magnetic heads (3), (4) are under the recording condition and the second magnetic heads (5), (6) are under the reproducing condition, the correction value preparation means (15) produces a correction value based on a difference between a second tracking error signal of a recording track that is now reproducing the signals and a second tracking error signal of one track before. A reference signal for driving the electro-mechanical conversion elements is corrected by the above correction value to control the electro-mechanical conversion elements (7), (8), in order to favorably carry out the editing and recording.