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.
Claims36
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 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 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 so that the magnetized domains between the plurality of second data transitions together define the second data track.
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 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;
- 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 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.
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 element operatively provided along the tape facing surface, 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 element provided at a second azimuth angle to the data transfer direction, wherein the second azimuth angle is different than the first azimuth angle.
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 along a data transfer direction, the system comprising:
- a plurality of independently positionable head modules, each head module comprising a read and a write element;
- a first read element of one of the plurality of independently positionable head modules provided at a first azimuth angle of greater than twenty five degrees with respect to a data transfer direction;
- and
- a second read element of another of the plurality of independently positionable head modules provided at a different azimuth angle with respect to the data transfer direction.
A method of making a head module comprising a plurality of at least one of read and write elements that are arranged at an angle to one another for defining at least two different azimuth angles for the head module, the method comprising the steps of:
- providing a plurality of sub-assemblies, each sub-assembly comprising at least one of a read and write element;
- connecting the sub-assemblies together by way of an azimuth defining element;
- and
- removing at least a portion of at least one sub-assembly to define a portion of the head module.
Dependencies are inferred from the claim text.