Invention Grant
- Patent Title: Information recording method and apparatus with suppressed mark edge jitters
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Application No.: US12219347Application Date: 2008-07-21
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Publication No.: US07907491B2Publication Date: 2011-03-15
- Inventor: Makoto Miyamoto , Tsuyoshi Toda , Masatoshi Ohtake , Motoyasu Terao , Junko Ushiyama , Keikichi Andoo , Yumiko Anzai , Akemi Hirotsune , Tetsuya Nishida , Hideki Saga
- Applicant: Makoto Miyamoto , Tsuyoshi Toda , Masatoshi Ohtake , Motoyasu Terao , Junko Ushiyama , Keikichi Andoo , Yumiko Anzai , Akemi Hirotsune , Tetsuya Nishida , Hideki Saga
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Mattingly & Malur, P.C.
- Priority: JP9-243669 19970909
- Main IPC: G11B7/00
- IPC: G11B7/00
Abstract:
Recording information is disclosed in which an information recording medium is irradiated with a recording energy beam that is power-modulated into at least a record power level and a record-ready power level lower than the record power level. The information is recorded on the recording medium in the form of length and interval of a mark portion. When forming a mark portion of a predetermined length, the radiation energy of the energy beam is increased as compared with when forming a mark portion of a different length before or after the first pulse of an energy beam pulse train including at least a pulse for forming the mark portion.
Public/Granted literature
- US20090040901A1 Information recording method and apparatus with suppressed mark edge jitters Public/Granted day:2009-02-12
Information query
IPC分类:
