Biphasic multiple level storage method
AssigneeAnd Yet, Inc.
InventorMartin H. Graham
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Abstract
A novel magnetic data storage method is disclosed for storing digital data in a magnetic medium. According to the present invention, the digital data is represented by the interval between two consecutive biphasic magnetic pulses recorded in the magnetic medium. In addition, additional data can be encoded in the pulse width of each biphasic magnetic pulse so that higher data encoding ratio can be achieved.
Claims14
A method for storing a sequence of data bits on a magnetic medium using biphasic magnetic pulses, wherein each biphasic magnetic pulse comprises a first magnetic state and a second magnetic state, comprising:
- recording a first biphasic magnetic pulse on said magnetic medium at a first magnetic location;
- and
- recording a second biphasic magnetic pulse on said magnetic medium at a second magnetic location, wherein said first magnetic location and second magnetic location is separated by a plurality of different lengths;
- wherein each of said different lengths between said second magnetic location and said first magnetic location represents at least two data bits.
A method of storing a sequence of data bits in a magnetic medium comprising:
- storing a sequence of biphasic magnetic pulses in said magnetic medium, wherein each biphasic magnetic pulse comprises a first magnetic state and a second magnetic state, and wherein each two consecutive biphasic magnetic pulses are separated by a plurality of different lengths,
- wherein each of the lengths between two consecutive biphasic magnetic pulses represents at least two data bits.
Dependencies are inferred from the claim text.