Large angle azimuth recording and head configurations
AssigneeAdvanced Research Corporation
InventorsTheodore A. Schwarz, Matthew P. Dugas
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Abstract
Large angle azimuth recording methods and devices. In one aspect of the invention methods of recording one or data tracks having data transitions oriented at a large azimuth angle are provided. In another aspect of the invention methods of reading a data track having data transitions oriented at a large azimuth angle are provided. Such methods include steps of suppressing a side track signal. In other aspects of the invention, head modules and devices for writing and/or reading large azimuth angle data tracks are provided.
Claims27
A method of recording data in magnetic tape, the method comprising the steps of:
- moving a magnetic tape and a write element relative to one another for defining first and second recording directions;
- writing a first data track in the first recording direction during said movement and creating domains of opposite magnetization and a plurality of first spaced data transitions between the domains that are oriented at an azimuth angle of greater than twenty five degrees to a line that is perpendicular to the first recording direction so that the magnetized domains between the plurality of first data transitions together define the first data track;
- and
- writing a second data track adjacent to the first data track and in the second recording direction during said movement by creating domains of opposite magnetization and a plurality of spaced second data transitions between the domains that are oriented at a reverse azimuth angle greater than twenty five degrees to a line perpendicular to the second recording direction so that the magnetized domains between the plurality of second data transitions together define the second data track;
- whereby the adjacent first and second tracks are written with an included angle between the first data transitions and the second data transitions of greater than fifty degrees.
A method of reading data that has been recorded on a magnetic tape, the method comprising the steps of:
- providing a magnetic tape having at least first and second adjacent data tracks, the first data track provided along a first data track direction with domains of opposite magnetization and a plurality of first spaced data transitions between the domains that are oriented at an azimuth angle of greater than twenty five degrees to a line that is perpendicular to the first data track direction, and the second data track provided along a second data track direction with domains of opposite magnetization and a plurality of second space data transitions that are oriented at a reverse azimuth angle of greater than twenty five degrees to a line that is perpendicular to the second data track direction;
- and
- moving the magnetic tape and a read element relative to one another along one of the first and second data track directions and thereby reading data from the magnetic tape.
A magnetic tape having a first data track provided thereon and extending in a first data track direction along the magnetic tape and a second data track provided thereon and extending in a second data track direction along the magnetic tape, the first and second data tracks being parallel and adjacent to one another, wherein the first data track comprises domains of opposite magnetization and a plurality of first spaced data transitions between the domains that are oriented at an azimuth angle of greater than twenty five degrees to a line that is perpendicular to the first data track direction and the second data track comprises domains of opposite magnetization and a plurality of second spaced data transitions between the domains that are oriented at a reverse azimuth angle of greater than twenty five degrees to a line that is perpendicular to the second data track direction, wherein an included angle between the first and second data transition is greater than fifty degrees.
A magnetic tape data transfer system employing read and write elements for positioning relative to a magnetic tape and to permit relative movement between the elements and the magnetic tape, the system comprising:
- a head module having a tape facing surface provided to accommodate movement of a magnetic tape relative to the head module in a data transfer direction;
- a first thin film data transfer element including a first gapline operatively provided along the tape facing surface, the gapline of the first element oriented at a first azimuth angle of greater than twenty five degrees with respect to the data transfer direction;
- and
- a second thins film data transfer element including a second gapline provided along the tape facing surface, the gapline of the second element oriented at a reverse azimuth angle of greater than twenty five degrees with respect to the first azimuth angle and to the data transfer direction, wherein an included angle between the first azimuth angle and the reverse azimuth angle is greater than fifty degrees as both the first and second data transfer elements are presented on the tape facing surface of the head module.
Dependencies are inferred from the claim text.