Invention Grant
- Patent Title: Information recording method and apparatus with suppressed mark edge jitters
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Application No.: US10270543Application Date: 2002-10-16
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Publication No.: US06608806B2Publication Date: 2003-08-19
- 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
- Priority: JP09-243669 19970909
- Main IPC: G11B700
- IPC: G11B700

Abstract:
A method for recording information is disclosed in which an information recording medium is irradiated with a recording energy beam power-modulated into at least a record power level and a record-ready power level lower than the record power level. 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. Also, only in the case where the energy beam is modulated by the power lower in power level than the record-ready power level after the last pulse of the energy beam pulse train including at least one pulse for forming a mark portion and the mark portion is followed by a space portion of a predetermined length, the particular radiation energy of low power level is reduced as compared with when the mark portion is followed by a space potion of a different length. The radiation energy is increased and/or decreased.
Public/Granted literature
- US20030039192A1 Information recording method and apparatus with suppressed mark edge jitters Public/Granted day:2003-02-27
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