BR0000895A - Meio de gravação óptica. - Google Patents

Meio de gravação óptica.

Info

Publication number
BR0000895A
BR0000895A BR0000895A BR0000895A BR0000895A BR 0000895 A BR0000895 A BR 0000895A BR 0000895 A BR0000895 A BR 0000895A BR 0000895 A BR0000895 A BR 0000895A BR 0000895 A BR0000895 A BR 0000895A
Authority
BR
Brazil
Prior art keywords
phase
optical recording
absorption rate
recording
crystallization
Prior art date
Application number
BR0000895A
Other languages
English (en)
Other versions
BR0000895B1 (pt
Inventor
Yutaka Kasami
Osamu Kawakubo
Katsuhiro Seo
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Publication of BR0000895A publication Critical patent/BR0000895A/pt
Publication of BR0000895B1 publication Critical patent/BR0000895B1/pt

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Classifications

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    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Optical Head (AREA)

Abstract

"MEIO DE GRAVAçãO óPTICA". Um meio de gravação óptica de comutação de fase que habilita sobregravação direta ideal sob condições de alta densidade e alta velocidade sem degradar a durabilidade de repetição ou a estabilidade de armazenamento de sinais gravados. Para este fim, o meio de gravação óptica de comutação de fase ter uma camada de gravação formada pelo menos de um material comutador de fase e é gravada e/ou reproduzida com um feixe de luz laser tendo um comprimento de onda entre 380 nm e 420 nm. Uma relação Ac/Aa, onde Ac é a taxa de absorção da camada de gravação em um estado cristalino e Aa é a taxa de absorção da camada de gravação em um estado amorfo, não é inferior a 0,9, e uma camada promotora de cristalização promovendo a cristalização do material comutador de fase é contatada com pelo menos uma superfície da gravada de gravação. Explorando o controle da taxa de absorção e a promoção de cristalização em combinação, é possível compensar positivamente a diferença entre as propriedades físicas da fase cristalina e aquelas da fase amorfa para realizar sobregravação direta ideal.
BRPI0000895-8A 1999-02-13 2000-02-21 meio de gravação óptica. BR0000895B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7424799 1999-02-13
JP18684399A JP2000298875A (ja) 1999-02-13 1999-06-30 光記録媒体

Publications (2)

Publication Number Publication Date
BR0000895A true BR0000895A (pt) 2000-09-12
BR0000895B1 BR0000895B1 (pt) 2010-11-30

Family

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BRPI0000895-8A BR0000895B1 (pt) 1999-02-13 2000-02-21 meio de gravação óptica.

Country Status (6)

Country Link
US (1) US6312780B1 (pt)
JP (1) JP2000298875A (pt)
AU (1) AU758976B2 (pt)
BR (1) BR0000895B1 (pt)
MX (1) MXPA00001574A (pt)
TW (1) TW480480B (pt)

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JP2002117577A (ja) * 2000-10-03 2002-04-19 Tdk Corp 光記録媒体および光学的情報記録方法
JP2002117576A (ja) * 2000-10-03 2002-04-19 Tdk Corp 光記録媒体および光学的情報記録方法
TW554341B (en) * 2000-12-15 2003-09-21 Koninkl Philips Electronics Nv Optical information medium and its use
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