Method and apparatus for determing desired rotational velocity of take-up reel for helical scan recorder
AssigneeExabyte Corporation
InventorTimothy C. Hughes
Life of this patent
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AssigneeExabyte Corporation
InventorTimothy C. Hughes
Estimating the term…
Methods and apparatus are provided for determining a servo offset value and a take-up reel velocity for imparting a desired linear velocity to tape in a helical scan recording system (20). The helical scan recorder system records information on a magnetic tape (22), the magnetic tape being transported between a supply reel (24) and a take-up reel (26) in the helical scan recorder through a tape path, which tape path includes at least a partial wrapping of the tape around a drum (30) of the helical scan recorder. The methods include moving the tape from the supply reel to the take-up reel whereby the tape travels a predetermined displacement; rewinding the tape by the tape extraction displacement and determining an angular rewind displacement of the take-up reel; and using the determined displacements to ascertain parameters including a desired velocity of the take-up reel.
A method for determining an angular velocity of a take-up reel of a helical scan recorder in order to achieve a desired tape linear velocity, the method comprising:
A helical scan recorder apparatus which records information on a magnetic tape, the magnetic tape being transported in a tape path between a supply reel and a take-up reel in the helical scan recorder, the recorder apparatus comprising:
Dependencies are inferred from the claim text.