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OPTICAL INFORMATION RECORDER (REFLECTION HOLOGRAPHIC MEMORY DEVICE)

外国特許コード F110002560
整理番号 KP04-039PCT
掲載日 2011年3月23日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2005JP020357
国際公開番号 WO 2006/082678
国際出願日 平成17年11月7日(2005.11.7)
国際公開日 平成18年8月10日(2006.8.10)
優先権データ
  • 特願2005-001430 (2005.1.6) JP
  • 特願2005-135200 (2005.5.6) JP
発明の名称 (英語) OPTICAL INFORMATION RECORDER (REFLECTION HOLOGRAPHIC MEMORY DEVICE)
発明の概要(英語) A holographic memory in which a disk recording medium having a mechanism for operating an optical pick-up system is used, signal and reference light beams are so coaxially directed as to be opposed, the polarization planes of the signal and preference light beams are aligned with each other on the disk recording medium and which is well compatible with existing techniques and high in cost performance when manufactured as a product. The reflection holographic memory comprises random-phase modulation multiplex recording means disposed in the light guide of the signal and/or reference light beams and a spatial-shift multiplex recording means so as to increase the recording capacity. Signals are recorded in the thickness direction of the disk so as to further increase the recoding capacity. That is, by combining random-phase modulation multiplex recording and spatial-shift multiplex recording, the recording density is enhanced tens to hundreds times to improve the recording capacity of multilayer type by using a micro recording area of the reflection hologram. Simultaneously, the encryption effect can be produced by the random-phase modulation multiplex recording.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • National University Corporation KOBE University
  • 発明者(英語)
  • MATOBA, Osamu
  • YOKOHAMA, Yuji
国際特許分類(IPC)
指定国 AE,AG,AL,AM,AT,AU,AZ,BA,BB,BG,BR,BW,BY,BZ,CA,CH,CN,CO,CR,CU,CZ,DE,DK,DM,DZ,EC,EE,EG,ES,FI,GB,GD,GE,GH,GM,HR,HU,ID,IL,IN,IS,JP,KE,KG,KM,KN,KP,KR,KZ,LC,LK,LR,LS,LT,LU,LV,LY,MA,MD,MG,MK,MN,MW,MX,MZ,NA,NG,NI,NO,NZ,OM,PG,PH,PL,PT,RO,RU,SC,SD,SE,SG,SK,SL,SM,SY,TJ,TM,TN,TR,TT,TZ,UA,UG,US,UZ,VC,VN,YU,ZA,ZM,ZW,EP(AT,BE,BG,CH,CY,CZ,DE,DK,EE,ES,FI,FR,GB,GR,HU,IE,IS,IT,LT,LU,LV,MC,NL,PL,PT,RO,SE,SI,SK,TR),OA(BF,BJ,CF,CG,CI,CM,GA,GN,GQ,GW,ML,MR,NE,SN,TD,TG),AP(BW,GH,GM,KE,LS,MW,MZ,NA,SD,SL,SZ,TZ,UG,ZM,ZW),EA(AM,AZ,BY,KG,KZ,MD,RU,TJ,TM)
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