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US 8,477,443 B2Granted
Pulse writing for bit patterned and continuous media recording
AssigneeSeagate Technology LLC
InventorsKaizhong Gao, Olle Gunnar Heinonen, Jianhua Xue, Wenzhong Zhu
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Abstract
Data storage systems are provided. Data storage systems illustratively include a writing element and a recording medium. In some embodiments, the writing element generates first and second magnetization fields that respectively record first and second magnetization patterns to the recording medium. In some embodiments, the writing element is de-saturated between recording the first and second magnetization patterns.
Claims12
An apparatus comprising:
- a recording medium having media dots that are separated from each other by regions of non-magnetic material, each media dot being associated with a timing window, and each region of non-magnetic material being associated with an error window;
- and
- a device configured to saturate a writing element within each of the timing windows and configured to de-saturate the writing element within each of the error windows,
- wherein the device is further configured to saturate the writing element by generating a same polarity magnetic field in the writing element during substantially entire time durations of consecutive ones of the timing windows corresponding to at least two adjacent ones of the media dots and configured to de-saturate the writing element within an error window between the consecutive timing windows for a time duration that is substantially smaller than a time duration of an individual one of the consecutive timing windows.
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A method comprising:
- saturating a magnetic field for a substantially entire time duration within each of at least two consecutive timing windows associated with corresponding different ones of at least two adjacent media dots, the magnetic field having a same polarity in the at least two consecutive timing windows;
- and
- de-saturating the magnetic field within an error window that is located between the at least two consecutive timing windows for a time duration that is substantially smaller that the time duration of each of the at least two consecutive timing windows.
A device comprising:
- a recording medium that includes a track of media dots, each media dot being associated with a timing window, and an area between two adjacent ones of the media dots being associated with an error window;
- and
- a writing element configured to generate a magnetic field that is saturated within the timing windows and that is de-saturated within the error window,
- wherein the writing element is further configured to generate a same polarity magnetic field during substantially entire time durations of consecutive ones of the timing windows corresponding to the two adjacent ones of the media dots and configured to de-saturate the writing element within the error window between the consecutive timing windows for a time duration that is substantially smaller than a time duration of an individual one of the consecutive timing windows.
1 more element
Dependencies are inferred from the claim text.