Invention Grant
- Patent Title: Data recording method and data recording equipment
- Patent Title (中): 数据记录方法和数据记录设备
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Application No.: US11340563Application Date: 2006-01-27
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Publication No.: US07663994B2Publication Date: 2010-02-16
- Inventor: Koichi Watanabe , Takahiro Kurokawa
- Applicant: Koichi Watanabe , Takahiro Kurokawa
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: Hitachi, Ltd.,Hitachi-LG Data Storage, Inc.
- Current Assignee: Hitachi, Ltd.,Hitachi-LG Data Storage, Inc.
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2005-284396 20050929
- Main IPC: G11B7/00
- IPC: G11B7/00
Abstract:
A frequency characteristics compensation method that can be applied to various waveforms (strategies). When determining the amount of frequency compensation, a deteriorated part by frequency characteristics is compensated for with respect to the difference between the pulse power to be compensated and the power level immediately before it. The present invention can also be applied to variations in the performance, aged deterioration, and temperature characteristics.
Public/Granted literature
- US20070070855A1 Data recording method and data recording equipment Public/Granted day:2007-03-29
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