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SIGNAL PLAYBACK DEVICE AND SIGNAL PLAYBACK METHOD

外国特許コード F130007551
整理番号 S2012-0233-N0
掲載日 2013年7月16日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2012JP008042
国際公開番号 WO 2013/094172
国際出願日 平成24年12月17日(2012.12.17)
国際公開日 平成25年6月27日(2013.6.27)
優先権データ
  • 特願2011-282505 (2011.12.23) JP
発明の名称 (英語) SIGNAL PLAYBACK DEVICE AND SIGNAL PLAYBACK METHOD
発明の概要(英語)

[Problem] To enable precise reproduction of a weak signal contained in an input signal without requiring N independent noise sources or applying noise to N input signals. [Solution] The invention is a signal playback device that, given an input signal superimposing noise on a weak signal that is transmission information, plays the weak signal by means of stochastic resonance. Said signal reproduction device comprises: nonlinear elements (NL1 to NLN) that input N (N is a natural number equal to 2 or more) received signals (R) branched to N branch lines (L1 to LN), and output nonlinear output signals (NLO1 to NLON)

N delay elements (D1 to DN) that delay the nonlinear output signals by mutually different amounts of time

and a combiner (10) that combines delay signals (DS1 to DSn) output by the delay elements (D1 to DN). The correlation among noise components contained in the delay signals (DS1 to DSn) that delay the nonlinear output signals is extremely small, and the correlation of the weak signal is large. In a combined delay signal (DA), a noise component is removed, and the weak signal is amplified.

  • 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 HOKKAIDO UNIVERSITY
  • 発明者(英語)
  • KASAI, SEIYA,
  • TADOKORO, YUKIHIRO,
  • ICHIKI, AKIHISA
国際特許分類(IPC)
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