公开(公告)号：DD234518C4

公开(公告)日：1987-01-28

申请号：DD27642385

申请日：1985-05-16

Applicant: BASF AG

Inventor： KRAUS GEROLD ,  HUBER WALTER ,  HACK JOACHIM ,  SCHULZE-BERGER KLAUS ,  SOLD ROLAND

IPC: G11B5/56 ,  G11B5/58 ,  G11B5/596 ,  G11B20/18 ,  G11B21/10 ,  G11B23/36 ,  G11B27/32

Abstract: A method and an arrangement for detecting error signals in a magnetic disk drive apparatus uses a test disk which has a plurality of test tracks distributed over the recording area and containing special test signals, a distinction being made between orientation, adjustment and azimuth bursts. Based on the normal position of the recording tracks of the magnetic disk, the spacing of the test tracks could depend on the type of step motor if such a motor is used in the positioning device. By special control, hysteresis errors can be measured in addition to tracking errors, eccentricity errors and azimuth errors. An advantageous use is for all types of disk drives, preferably FlexyDisk drives.

公开(公告)号：ZA853730B

公开(公告)日：1986-01-29

申请号：ZA853730

申请日：1985-05-17

Applicant: BASF AG

Inventor： KRAUS GEROLD ,  HUBER WALTER ,  HACK JOACHIM ,  SCHULZE-BERGE KLAUS ,  SOLD ROLAND

IPC: G11B5/56 ,  G11B5/58 ,  G11B5/596 ,  G11B20/18 ,  G11B21/10 ,  G11B23/36 ,  G11B

Abstract: A method and an arrangement for detecting error signals in a magnetic disk drive apparatus uses a test disk which has a plurality of test tracks distributed over the recording area and containing special test signals, a distinction being made between orientation, adjustment and azimuth bursts. Based on the normal position of the recording tracks of the magnetic disk, the spacing of the test tracks could depend on the type of step motor if such a motor is used in the positioning device. By special control, hysteresis errors can be measured in addition to tracking errors, eccentricity errors and azimuth errors. An advantageous use is for all types of disk drives, preferably FlexyDisk drives.

公开(公告)号：ZA8503730B

公开(公告)日：1986-01-29

申请号：ZA8503730

申请日：1985-05-17

Applicant: BASF AG

Inventor： KRAUS GEROLD ,  HUBER WALTER ,  HACK JOACHIM ,  SCHULZE-BERGE KLAUS ,  SOLD ROLAND

IPC: G11B5/56 ,  G11B5/58 ,  G11B5/596 ,  G11B20/18 ,  G11B21/10 ,  G11B23/36 ,  G11B

CPC classification number: G11B23/36 ,  G11B5/59627 ,  G11B20/182

公开(公告)号：DE3679234D1

公开(公告)日：1991-06-20

申请号：DE3679234

申请日：1986-03-22

Applicant: BASF AG

Inventor： SCHAEFFER NORBERT ,  PFEFFERKORN DIETMAR ,  SOLD ROLAND ,  BRINKMANN UWE ,  KREITNER LUDWIG DR ,  SIGWALT ROLAND

IPC: G11B23/087

Abstract: In a tape cassette possessing symmetrically arranged support liners, a compressive force dependent on the tape roll diameter is exerted by the liner and utilized for centering the roll and the tape. Force/diameter relationships, and embodiments of folded liners for achieving individual forces are described. A novel dynamic liner arrangement can be used in any tape cassette possessing high winding speeds and sensitive tapes, with frequently alternating rewind/playback operation.

公开(公告)号：AU576859B2

公开(公告)日：1988-09-08

申请号：AU4268485

申请日：1985-05-17

Applicant: BASF AG

Inventor： KRAUS GEROLD ,  HUBER WALTER ,  HACK JOACHIM ,  SCHULZE-BERGE KLAUS ,  SOLD ROLAND

IPC: G11B5/56 ,  G11B5/58 ,  G11B5/596 ,  G11B20/18 ,  G11B21/10 ,  G11B23/36 ,  G11B21/02

Abstract: A method and an arrangement for detecting error signals in a magnetic disk drive apparatus uses a test disk which has a plurality of test tracks distributed over the recording area and containing special test signals, a distinction being made between orientation, adjustment and azimuth bursts. Based on the normal position of the recording tracks of the magnetic disk, the spacing of the test tracks could depend on the type of step motor if such a motor is used in the positioning device. By special control, hysteresis errors can be measured in addition to tracking errors, eccentricity errors and azimuth errors. An advantageous use is for all types of disk drives, preferably FlexyDisk drives.

公开(公告)号：HU193370B

公开(公告)日：1987-09-28

申请号：HU187385

申请日：1985-05-17

Applicant: BASF AG

Inventor： KRAUS GEROLD ,  HUBER WALTER ,  HACK JOACHIM ,  SCHULZE-BERGE KLAUS ,  SOLD ROLAND

IPC: G11B5/56 ,  G11B5/58 ,  G11B5/596 ,  G11B20/18 ,  G11B21/10 ,  G11B23/36 ,  G11B5/02 ,  G11B27/36

Abstract: A method and an arrangement for detecting error signals in a magnetic disk drive apparatus uses a test disk which has a plurality of test tracks distributed over the recording area and containing special test signals, a distinction being made between orientation, adjustment and azimuth bursts. Based on the normal position of the recording tracks of the magnetic disk, the spacing of the test tracks could depend on the type of step motor if such a motor is used in the positioning device. By special control, hysteresis errors can be measured in addition to tracking errors, eccentricity errors and azimuth errors. An advantageous use is for all types of disk drives, preferably FlexyDisk drives.

公开(公告)号：HUT38176A

公开(公告)日：1986-04-28

申请号：HU187385

申请日：1985-05-17

Applicant: BASF AG

Inventor： KRAUS GEROLD ,  HUBER WALTER ,  HACK JOACHIM ,  SCHULZE-BERGE KLAUS ,  SOLD ROLAND

IPC: G11B5/56 ,  G11B5/58 ,  G11B5/596 ,  G11B20/18 ,  G11B21/10 ,  G11B23/36 ,  G11B5/02 ,  G11B27/36

Abstract: A method and an arrangement for detecting error signals in a magnetic disk drive apparatus uses a test disk which has a plurality of test tracks distributed over the recording area and containing special test signals, a distinction being made between orientation, adjustment and azimuth bursts. Based on the normal position of the recording tracks of the magnetic disk, the spacing of the test tracks could depend on the type of step motor if such a motor is used in the positioning device. By special control, hysteresis errors can be measured in addition to tracking errors, eccentricity errors and azimuth errors. An advantageous use is for all types of disk drives, preferably FlexyDisk drives.

公开(公告)号：DD234518A5

公开(公告)日：1986-04-02

申请号：DD27642385

申请日：1985-05-16

Applicant: BASF AG

Inventor： KRAUS GEROLD ,  HUBER WALTER ,  HACK JOACHIM ,  SCHULZE-BERGER KLAUS ,  SOLD ROLAND

IPC: G11B5/56 ,  G11B5/58 ,  G11B5/596 ,  G11B20/18 ,  G11B21/10 ,  G11B23/36 ,  G11B27/32

Abstract: A method and an arrangement for detecting error signals in a magnetic disk drive apparatus uses a test disk which has a plurality of test tracks distributed over the recording area and containing special test signals, a distinction being made between orientation, adjustment and azimuth bursts. Based on the normal position of the recording tracks of the magnetic disk, the spacing of the test tracks could depend on the type of step motor if such a motor is used in the positioning device. By special control, hysteresis errors can be measured in addition to tracking errors, eccentricity errors and azimuth errors. An advantageous use is for all types of disk drives, preferably FlexyDisk drives.

公开(公告)号：GB2161140A

公开(公告)日：1986-01-08

申请号：GB8512493

申请日：1985-05-17

Applicant: BASF AG

Inventor： SCHOETTLE KLAUS ,  SOLD ROLAND ,  BRINKMANN UWE ,  WAGNER WERNER

IPC: G11B23/087

Abstract: A support liner (20) for a magnetic tape cassette comprises a coherent double liner whose individual liner parts (20a and 20b) are supported against the inner walls of the cassette to provide a cushioned support for tape rolls of the cassette.

公开(公告)号：FR2564630A3

公开(公告)日：1985-11-22

申请号：FR8507390

申请日：1985-05-15

Applicant: BASF AG

Inventor： SCHOETTLE KLAUS ,  SOLD ROLAND ,  BRINKMANN UWE ,  WAGNER WERNER

IPC: G11B23/087 ,  G11B23/04

Abstract: A support liner (20) for a magnetic tape cassette comprises a coherent double liner whose individual liner parts (20a and 20b) are supported against the inner walls of the cassette to provide a cushioned support for tape rolls of the cassette.