-
公开(公告)号：DE69415088T2
公开(公告)日：1999-07-15
申请号：DE69415088
申请日：1994-05-31
Applicant: IBM
Inventor： COMEAUX WAYNE THOMAS , GRAVES DAVID CONRAD , JOHNSON DOUGLAS WAYNE
Abstract: A magnetic tape (21) has three evenly spaced-apart longitudinally-extending servo track areas (40-42). Four equal-sized longitudinally-extending data track areas (45-48) are disposed between said servo track areas (40-42) and between longitudinal edges of the tape (21) and one of said data track areas (45-48). All servo track areas (40-42) are simultaneously sensed for producing one head positioning signal (100). Data tracks are arranged into four groups of tracks (45-48), one-half of the data tracks in each group are concurrently accessed. The data tracks on the tape are arranged in clusters. Each cluster has one track from each of the groups of tracks. Two laterally-adjacent track clusters constitute four data track wraps for serpentine scanning of data tracks. The concurrent track accessing respectively occurs in first and second halves of a data track wrap. Each servo area indicates two lateral positions of the tape to the head (27). The lateral spacing between the lateral positions is equal to about a data track width. This arrangement makes the servo areas field writable.
-
公开(公告)号：DE69415088D1
公开(公告)日：1999-01-21
申请号：DE69415088
申请日：1994-05-31
Applicant: IBM
Inventor： COMEAUX WAYNE THOMAS , GRAVES DAVID CONRAD , JOHNSON DOUGLAS WAYNE
Abstract: A magnetic tape (21) has three evenly spaced-apart longitudinally-extending servo track areas (40-42). Four equal-sized longitudinally-extending data track areas (45-48) are disposed between said servo track areas (40-42) and between longitudinal edges of the tape (21) and one of said data track areas (45-48). All servo track areas (40-42) are simultaneously sensed for producing one head positioning signal (100). Data tracks are arranged into four groups of tracks (45-48), one-half of the data tracks in each group are concurrently accessed. The data tracks on the tape are arranged in clusters. Each cluster has one track from each of the groups of tracks. Two laterally-adjacent track clusters constitute four data track wraps for serpentine scanning of data tracks. The concurrent track accessing respectively occurs in first and second halves of a data track wrap. Each servo area indicates two lateral positions of the tape to the head (27). The lateral spacing between the lateral positions is equal to about a data track width. This arrangement makes the servo areas field writable.
-
Patent Agency Ranking
公开(公告)号：HK202296A
公开(公告)日：1996-11-15
申请号：HK202296
申请日：1996-11-07
Applicant: IBM
Inventor： COMEAUX WAYNE THOMAS , EAST DON GAYLORD , FELDE STEVE LLOYD , JOHNSON DOUGLAS WAYNE
IPC: G11B15/43 , G11B15/60 , G11B15/67 , G11B23/04 , G11B23/107
Abstract: The present invention is a tape drive system (1) comprising means to support and drive first and a second tape reels (4, 5), tape guides (7, 8), a transducing head (6) for reading or writing data, said system having a tape feed path from the first tape reel (4) to the second tape reel (5) around the tape guides (7, 8), the feed path including a wrap section wherein a portion of the tape is wrapped over an exposed part of the tape wound upon one of the tape reels (4), the wrapped portion of the tape forming a squeeze bearing realised in the presence of a thin film of air between the two surfaces of the tape constituting the bearing.Said squeeze bearing damps tape tension variation, inhibits the transmission of vibrations from one reel to the other, and eliminates the entrapment of entrained air without any additional rollers or other components. The tape path is suitable for use in a peripheral storage device, such as a magnetic tape drive, and is compatible with a variety of tape cartridge configurations.
-
公开(公告)号：DE69213303D1
公开(公告)日：1996-10-10
申请号：DE69213303
申请日：1992-04-15
Applicant: IBM
Inventor： COMEAUX WAYNE THOMAS , EAST DON GAYLORD , FELDE STEVE LLOYD , JOHNSON DOUGLAS WAYNE
IPC: G11B15/43 , G11B15/60 , G11B15/67 , G11B23/04 , G11B23/107
Abstract: The present invention is a tape drive system (1) comprising means to support and drive first and a second tape reels (4, 5), tape guides (7, 8), a transducing head (6) for reading or writing data, said system having a tape feed path from the first tape reel (4) to the second tape reel (5) around the tape guides (7, 8), the feed path including a wrap section wherein a portion of the tape is wrapped over an exposed part of the tape wound upon one of the tape reels (4), the wrapped portion of the tape forming a squeeze bearing realised in the presence of a thin film of air between the two surfaces of the tape constituting the bearing.Said squeeze bearing damps tape tension variation, inhibits the transmission of vibrations from one reel to the other, and eliminates the entrapment of entrained air without any additional rollers or other components. The tape path is suitable for use in a peripheral storage device, such as a magnetic tape drive, and is compatible with a variety of tape cartridge configurations.
-
公开(公告)号：DE69213303T2
公开(公告)日：1997-03-20
申请号：DE69213303
申请日：1992-04-15
Applicant: IBM
Inventor： COMEAUX WAYNE THOMAS , EAST DON GAYLORD , FELDE STEVE LLOYD , JOHNSON DOUGLAS WAYNE
IPC: G11B15/43 , G11B15/60 , G11B15/67 , G11B23/04 , G11B23/107
Abstract: The present invention is a tape drive system (1) comprising means to support and drive first and a second tape reels (4, 5), tape guides (7, 8), a transducing head (6) for reading or writing data, said system having a tape feed path from the first tape reel (4) to the second tape reel (5) around the tape guides (7, 8), the feed path including a wrap section wherein a portion of the tape is wrapped over an exposed part of the tape wound upon one of the tape reels (4), the wrapped portion of the tape forming a squeeze bearing realised in the presence of a thin film of air between the two surfaces of the tape constituting the bearing.Said squeeze bearing damps tape tension variation, inhibits the transmission of vibrations from one reel to the other, and eliminates the entrapment of entrained air without any additional rollers or other components. The tape path is suitable for use in a peripheral storage device, such as a magnetic tape drive, and is compatible with a variety of tape cartridge configurations.
-
公开(公告)号：ES2091405T3
公开(公告)日：1996-11-01
申请号：ES92303363
申请日：1992-04-15
Applicant: IBM
Inventor： COMEAUX WAYNE THOMAS , EAST DON GAYLORD , FELDE STEVE LLOYD , JOHNSON DOUGLAS WAYNE
IPC: G11B15/43 , G11B15/60 , G11B15/67 , G11B23/04 , G11B23/107
Abstract: The present invention is a tape drive system (1) comprising means to support and drive first and a second tape reels (4, 5), tape guides (7, 8), a transducing head (6) for reading or writing data, said system having a tape feed path from the first tape reel (4) to the second tape reel (5) around the tape guides (7, 8), the feed path including a wrap section wherein a portion of the tape is wrapped over an exposed part of the tape wound upon one of the tape reels (4), the wrapped portion of the tape forming a squeeze bearing realised in the presence of a thin film of air between the two surfaces of the tape constituting the bearing.Said squeeze bearing damps tape tension variation, inhibits the transmission of vibrations from one reel to the other, and eliminates the entrapment of entrained air without any additional rollers or other components. The tape path is suitable for use in a peripheral storage device, such as a magnetic tape drive, and is compatible with a variety of tape cartridge configurations.
-
公开(公告)号：BR9402178A
公开(公告)日：1995-10-03
申请号：BR9402178
申请日：1994-06-06
Applicant: IBM
Inventor： CROSSLAND JAMES FRANCIS , BACA ROBERT CARL , CHEUNG MAN FUNG , CHLIWNJI ALEX , COMEAUX WAYNE THOMAS
-
-
-
-
-
-
Search Results
7
records
(took 0.016 seconds)
