Abstract:
PROBLEM TO BE SOLVED: To provide selected and different superimpose data information to identify a separated servo band for addressablility in which the separated servo band is independent in a magnetic tape having a vertical direction servo band in which servo information provided with superimpose data information is separated. SOLUTION: Servo information has transition extended in the horizontal direction not parallel to indicate the positioning of a horizontal direction, The selected different superimpose data information can have a lack of a part of the servo band. When the superimpose data information is the position information of a vertical direction, The selected different superimpose data information can have position information in which one or a plurality of servo bands are different. The selected different superimpose data information can have a band identifier in the superimpose data information of one or the plurality of servo bands. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To superimpose address specifying data information upon previously recorded track following servo information by shifting at least two transitions of a repeat transition couple in the parallel direction to transitions other than this repeat transition couple and including the address specifying information to be superimposed with the shift transitions. SOLUTION: A servo read head 26 is smaller than the width of a servo track 27, and a magnetic tape 20 is moved across a tape head assembly 24 in the horizontal direction. On the occurrence of this movement, a servo pattern of magnetic flux transition is detected by the servo read head 26, where an analog servo read signal is generated, and is changed into a position signal by a signal decoder 36 via a servo signal line 34 and is then sent to a servo control device 40 by a position signal line 38, from which a servo control signal is sent to a servo positioning mechanism of the head assembly 24 by a control line 42. Then, the head assembly 24 including the servo reading head 26 is moved vertically to a center line 30 of the servo track or the servo read head 26 is moved to the middle with respect to the center line 30.
Abstract:
PROBLEM TO BE SOLVED: To make a pattern of a separated servo band have at least one distinguishing property for a pattern of the other separated servo band in a tape having the separated servo band of a pattern arranged in the horizontal direction over the whole tape. SOLUTION: The distinguishing property enables the identification of the separated servo band. For example, a pattern of the separated servo band has the detectable transition of a different azimuth orientation such as inversion in the horizontal direction for the other servo band. In the other method, a variation quantity in the width of a gap of a pattern is given to the other servo band. In the other method, a variation quantity in the number of the detectable transition of the pattern is given to the pattern of the other servo band. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
A TAPE MOVEMENT CONSTRAINT IS PROVIDED FOR A TAPE DRIVE SYSTEM WHICH MOVES A TAPE LONGITUDINALLY ALONG A TAPE PATH ACCROSS A TAPE HEAD, THE TAPE HAVING LONGITUDINAL TRACKS. THE TAPE HEAD HAS A TRACK FOLLOWING SERVO SYSTEM FOR MOVINGTHE HEAD LATERALLY FOR FOLLOWING LATERAL MOVEMENT OF THE TRACKS, WHERE THE TAPE IS SUBJECT TO LATERAL TRANSIENT MOVEMENT. A TAPE ROLLER BEARING CLOSELY ADJACENT THE TAPE HEAD IS ROTATABLE ABOUT A CENTRAL AXIS PARALLEL TO THE CYLINDRICAL PERIPHERAL SURFACE, ALLOWING THE TAPE FREEDOM OF MOVEMENT IN THE LONGITUDINAL DIRECTION. THE TAPE ROLLER BEARING HAS A FRICTIONAL CYLINDRICAL PERIPHERAL SURFACE FOR CONTACTING AND ENGAGING THE SURFACE OF THE TAPE AND CONSTRAINING MOVEMENT OF THE TAPE IN THE LATERAL DIRECTION, THEREBY REDUCING THE RATE OF THE LATERLA TRANSIENT MOVEMENT OF THE TAPE TO ALLOW THE TRACK FOLLOWING SERVO SYSTEM TO FOLLOW THE REDUCED RATE LATERAL TRANSIENT MOVEMENT OF THE LONGITUDINALTRACKS. ANY POTENTIAL AIR BEARING THAT COULD FORM BETWEEN THE SURFACE OF THE ROLLER BEARING IS COLLAPSED TO INSURE THAT THE ROLLER BEARING FRICTIONALLY CONTACTS AND ENGAGES THE SURFACE OF THE TAPE.
Abstract:
In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating characteristic allows identification of the separate servo bands. For example, the patterns of a separate servo band have differing azimuthal orientations of detectable transitions with respect to another servo band, such as being laterally inverted. In another, variations in the width of gaps of patterns are made with respect to another servo band. In another, variations are made in the number of the detectable transitions of patterns with respect to the patterns of another servo band.
Abstract:
THE INVENTION IS A TAPE REEL BRAKE WHICH IS MOUNTED IN A WELL IN THE TOP OF A TAPE REEL HUB. THE WELL IS INSIDE THE TAPE BEARING SURFACE OF THE HUB. THE BRAKE IS MOUNTED TO BE COMPLIANTLY BIASED AWAY FROM THE BASE OF THE WELL. THE HUB IS SEATED AGAINST A FIRST INSIDE SURFACE OF A TAPE CARTRIDGE HOUSING. THE HUB AND BRAKE ARE SEATED IN THE TAPE CARTRIDGE SUCH THAT TEETH ON THE PERIPHERY OF THE BRAKE ARE BIASED AGAINST THE OPPOSITE INSIDE SURFACE OF THE CARTRIDGE HOUSING ABOUT THE PERIPHERY OF AN OPENING THEREIN. THE BIASING OF THE BRAKE AGAINST THE OPPOSITE INSIDE SURFACE BOTH PREVENTS THE ROTATION OF THE REEL AND SHIELDS OUT DUST WHEN THE TAPE CARTRIDGE IS REMOVED FROM A TAPE DRIVE. TO ROTATE THE REEL, A TAPE DRIVE CLUTCH ENTERS THE OPENING IN THE OPPOSITE INSIDE SURFACE AND DEPRESSES THE BRAKE INTO THE WELL TO MATE WITH A SMALLER DIAMETER PORTION OF THE HUB OR A RECESSED PORTION OF THE BRAKE. THE HUB IS ALWAYS MAINTAINED ON THE INSIDE SURFACE OF THE HOUSING, THEREBY ELIMINATING LATERAL MOTION WHICH COULD DISRUPT THE TAPE PATH.(FIG 14)