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公开(公告)号：US20190235840A1
公开(公告)日：2019-08-01
申请号：US15884952
申请日：2018-01-31
Applicant: Seagate Technology LLC
Inventor： Li Hong ZHANG , WenXiang XIE , Xiong LIU
Abstract: A method includes detecting noise in a laser output of a heat assisted magnetic recording device. The noise is converted into an electrical signal including a numerical value. A least significant digit of the numerical value is selected. The least significant digit is concatenated with another least significant digit from another detecting of another noise in another laser output to form a number.
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