Invention Grant
- Patent Title: Shingled magnetic recording storage system
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Application No.: US16694719Application Date: 2019-11-25
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Publication No.: US10734033B2Publication Date: 2020-08-04
- Inventor: Jian Qiang , Xiong Liu , Choon Wei Ng , Sangyun Jung
- Applicant: Seagate Technology LLC
- Applicant Address: US CA Fremont
- Assignee: SEAGATE TECHNOLOGY LLC
- Current Assignee: SEAGATE TECHNOLOGY LLC
- Current Assignee Address: US CA Fremont
- Agency: Holzer Patel Drennan
- Main IPC: G11B5/596
- IPC: G11B5/596 ; G11B27/36 ; G11B20/10 ; G11B20/12 ; G06F3/06 ; G11B5/012 ; G06F12/0871

Abstract:
Methods and systems that reduce off-track write retry operations in shingled magnetic recording systems. In one implementation, the method includes writing data to an initial track, determining which side of the initial track is a shingled side, calculating a percentage of position error signal (PES) at a shingled side end of the initial track (PES1) when an off-track write operation occurs, determining whether the PES1 meets a first pre-determined threshold, continue writing data to a second track responsive to determining the PES1 is below a first pre-determined threshold, calculating a percentage of PES at a shingled side end of the second track (PES2), determining whether a combined value of PES1 and PES2 is above a second predetermined threshold to determine a probability value of the initial track being erased, and continue writing to a third track if the combined value is below the second predetermined threshold.
Public/Granted literature
- US20200090705A1 SHINGLED MAGNETIC RECORDING STORAGE SYSTEM Public/Granted day:2020-03-19
Information query
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