公开(公告)号：WO1997017700A1

公开(公告)日：1997-05-15

申请号：PCT/IB1996001154

申请日：1996-10-25

Applicant: PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB

Inventor： PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB ,  KALFS, Johannes, Jozef, Wilhelmus ,  HOOGENDOORN, Abraham

IPC: G11B05/584

CPC classification number: G11B5/584 ,  G11B5/00817 ,  G11B5/4893 ,  G11B5/58 ,  G11B5/596 ,  G11B2005/0016

Abstract: The system comprises a magnetic tape (10), a magnetic-head unit (20) and an actuator (40). The magnetic tape (10) has servo tracks (11-19) containing servo signals. The servo signals have been written with a magnetic head, not shown, having a comparatively large gap length. As a result, the servo signals are recorded deep into the magnetic tape (10). The magnetic-head unit (20) comprises a read head (21) and a write head (22) to inscribe the track (63), the read head following a bounding line (13a) between adjacent servo tracks (13 and 14) in response to the servo signals read from said servo tracks (13 and 14) by the read head (21). The system in accordance with the invention is characterized in that it comprises control means which determine the sequence in which the information tracks (61-68) are written, the read head (21) either following a track (61 or 63) between two respective non-overwritten parts (60 and 62 or 62 and 64) of the magnetic tape (10), or following a track (62 or 64) between two respective overwritten parts (61 and 63 or 63 and 65) of the magnetic tape (10).

Abstract translation: 该系统包括磁带（10），磁头单元（20）和致动器（40）。 磁带（10）具有包含伺服信号的伺服磁道（11-19）。 伺服信号已经被写入具有较大间隙长度的磁头（未示出）。 结果，将伺服信号深度记录到磁带（10）中。 磁头单元（20）包括读头（21）和写磁头（22），用于在轨道（63）之间记录读头，跟随在相邻伺服磁道（13和14）之间的边界线（13a） 响应于由读取头（21）从所述伺服磁道（13和14）读取的伺服信号。 根据本发明的系统的特征在于，其包括控制装置，其确定写入信息轨道（61-68）的顺序，读取头（21）或者跟随在两个相应的轨道（61或63）之间的轨道 磁带（10）的非重写部分（60和62或62和64）或磁带（10）的两个相应重写部分（61和63或63和65）之间的轨道（62或64） ）。

公开(公告)号：WO1996013833A1

公开(公告)日：1996-05-09

申请号：PCT/NO1995000199

申请日：1995-10-27

Applicant: TANDBERG DATA STORAGE A/S ,  LIAN, Ragnar ,  SIMONSEN, Lars ,  RUDI, Guttorm

Inventor： TANDBERG DATA STORAGE A/S

IPC: G11B05/584

CPC classification number: G11B5/584 ,  G11B5/5504

Abstract: The present invention resolves the problem of micropositioning reading/writing heads quickly and precisely in relation to tape on a tape streamers, at the same time as the reading/writing head can be displaced across the complete width of the tape. At the same time it will have small stray field of magnetism which potentially can destroy tape and reading/writing heads.

Abstract translation: 本发明解决了在磁带机上与磁带相关地快速且精确地定位读/写头的问题，同时读/写头可以跨越磁带的整个宽度移位。 同时它将具有小的杂散磁场，这可能会破坏磁带和读/写头。

公开(公告)号：WO1996000438A1

公开(公告)日：1996-01-04

申请号：PCT/US1995008859

申请日：1995-06-23

Applicant: QUANTUM CORPORATION

Inventor： QUANTUM CORPORATION ,  SALIBA, George, A.

IPC: G11B05/584

CPC classification number: G11B5/00817 ,  G11B5/4893 ,  G11B5/5508 ,  G11B5/584 ,  G11B15/026 ,  G11B15/04

Abstract: A method of adjusting the lateral position of writing on a magnetic tape. A magnetic tape recording is provided having a first track (30) including alternate data (38) and servo (40) information wherein the data is written at a first azimuth angle and the servo information is written at a second azimuth angle, and having a second track (32) including alternate data and servo information wherein the data is written at the second azimuth angle and the servo is written at the first azimuth angle. The first track is monitored during writing of the second track for the presence of servo blocks. Writing in the second track is interrupted upon the sensing of alternate servo blocks in the first track. Amplitudes of servo blocks received during writing are compared with amplitudes of alternate servo blocks received while writing is interrupted, and the lateral position of writing is adjusted in response.

Abstract translation: 调整在磁带上书写的横向位置的方法。 提供磁带记录装置，其具有包括备用数据（38）和伺服（40）信息的第一轨道（30），其中数据以第一方位角写入，伺服信息以第二方位角写入，并具有 包括交替数据和伺服信息的第二轨道（32），其中以第二方位角写入数据，并以第一方位角写入伺服。 在第二轨道的写入期间监视第一轨道以存在伺服块。 在第一轨道中的替代伺服块的感测中，在第二轨道中的写入被中断。 在写入期间接收到的伺服块的幅度与写入中断时接收的交替伺服块的幅度进行比较，并且响应地调整写入的横向位置。

公开(公告)号：WO1991004555A1

公开(公告)日：1991-04-04

申请号：PCT/US1990005259

申请日：1990-09-18

Applicant: EASTMAN KODAK COMPANY

Inventor： EASTMAN KODAK COMPANY ,  ALCUDIA, Ezra, Ruan ,  WHYTE, Robert, Edward, Jr.

IPC: G11B05/584

CPC classification number: G11B5/5508

Abstract: In a multichannel recording/playback apparatus, a bi-directional transport longitudinally moves a magnetic tape (50) past a multitransducer magnetic head (40) for recording and/or playback. The magnetic head is positionable to selected tracks in a stepwise manner across the width of the tape. A head positioning servo (116) utilizes binary patterns pre-recorded on the tape, consisting of magnetized blocks (70, 72,---, 86) and non magnetized blocks (73, 75,---, 101) which are read by a servo transducer (88) integral with the multitransducer head stack. For each centerline corresponding to a specified track location, the servo transducer straddles the line between adjacent, longitudinally recorded patterns and when the servo transducer is 'on track' two conditions are met: 1) the played back code is the track address included in the track location identifier stored in a controlling microcontroller, 2) the amplitudes of the '1 bits' of the played back code are all the same and equal to 1/2 the amplitude of a full track width output. When 'on track', the servo transducer straddles the line between adjacent lines of magnetized blocks and non magnetized blocks, and therefore plays back 1/2 amplitude signals from the magnetized blocks on one side of the 'on track' line and 1/2 amplitude signal from the magnetized blocks on the other side of the 'on track' line.