Information recording method and apparatus with suppressed mark edge jitters
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United States of America Patent
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Mar 14, 2006
Issued Date -
N/A
app pub date -
Nov 3, 2004
filing date -
Sep 9, 1997
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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.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- HITACHI CONSUMER ELECTRONICS CO., LTD.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Andoo, Keikichi | Musashino, JP | 39 | 411 |
Anzai, Yumiko | Ome, JP | 72 | 675 |
Hirotsune, Akemi | Higashimurayama, JP | 90 | 762 |
Miyamoto, Makoto | Ome, JP | 141 | 969 |
Nishida, Tetsuya | Tokyo, JP | 67 | 928 |
Ohtake, Masatoshi | Ome, JP | 28 | 564 |
Saga, Hideki | Kokubunji, JP | 59 | 634 |
Terao, Motoyasu | Tokyo, JP | 204 | 2770 |
Toda, Tsuyoshi | Kodaira, JP | 81 | 839 |
Ushiyama, Junko | Kodaira, JP | 47 | 491 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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