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Signal processing device and method, signal processing program, and recording medium where the program is recorded

外国特許コード F110003345
整理番号 A222-01WO
掲載日 2011年6月23日
出願国 アメリカ合衆国
出願番号 59146905
公報番号 20070285295
公報番号 7463172
出願日 平成17年3月3日(2005.3.3)
公報発行日 平成19年12月13日(2007.12.13)
公報発行日 平成20年12月9日(2008.12.9)
国際出願番号 JP2005003625
国際公開番号 WO2005086356
国際出願日 平成17年3月3日(2005.3.3)
国際公開日 平成17年9月15日(2005.9.15)
優先権データ
  • 特願2004-058704 (2004.3.3) JP
  • 特願2004-058712 (2004.3.3) JP
  • 特願2004-132535 (2004.4.28) JP
  • 2005WO-JP03625 (2005.3.3) WO
発明の名称 (英語) Signal processing device and method, signal processing program, and recording medium where the program is recorded
発明の概要(英語) (US7463172)
A signal processing device which outputs a discrete signal composed of a string of the sampling values and parameters m signal.
The signal processing device includes a sampling circuit which samples an input signal and outputs a discrete signal, multiple function generators which generate multiple sampling functions with parameters m different from each other, plural inner product operating units for each of parameters m that take an inner product between the input signal and each of plural sampling functions and output an inner product operating value, and a judging unit which determines parameter m providing a minimum error out of multiple errors composed of differences between the sampling value and inner product operating values output from the multiple inner product operating units and outputs the parameters.
特許請求の範囲(英語) [claim1]
1. A signal processing method comprising the steps of: providing a plurality of fluency Analog-to-Digital converter functions classified with parameters m;
sampling a continuous input signal to get sampling values;finding inner product operating values between the continuous input signal and a fluency Analog-to-Digital converter function selected from the plurality of fluency Analog-to-Digital converter functions;judging differences between the sampling values and the inner product operating values;outputting the parameter m in which values of the differences come to minimum, and the sampling values or the inner product operating values as an output signal,providing a plurality of fluency Digital-to-Analog converter functions classified with the parameters m;inputting the output signal;selecting a fluency Digital-to-Analog converter function from the plurality of fluency Digital-to-Analog converter functions according to the parameter m in the output signal;
and
generating a continuous signal by performing convoluting integration between the selected fluency Digital-to-Analog converter function and the sampling values or the inner product operating values in the output signal.
[claim2]
2. The signal processing method according to claim 1, wherein the parameter m is a parameter denoting that each of the fluency Analog-to-Digital converter function of the parameter m and the fluency Digital-to-Analog converter function of the parameter m is continuously differentiable only as often as (m-2) times, and wherein the parameters m contain at least three types which are m=2, 3, and infin .
[claim3]
3. The signal processing method according to claim 1, wherein the fluency Analog-to-Digital converter function and the fluency Digital-to-Analog converter function maintain orthogonal relation each other for each of the parameters in.
[claim4]
4. The signal processing method according to claim 1, wherein the continuous input signal corresponds to a discrete signal which is sampled at shorter sampling period than that for getting the sampling values and then encoded, and wherein the continuous signal is a signal gotten through digital signal processing.
[claim5]
5. The signal processing method according to claim 1, wherein the output signal is inputted through a recording medium or a communication means.
  • 発明者/出願人(英語)
  • TORAICHI KAZUO
  • KATAGISHI KAZUKI
  • NAKAMURA KOUJI
  • MOROOKA YASUO
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
国際特許分類(IPC)
参考情報 (研究プロジェクト等) CREST New High-Performance Information Processing Technology Supporting Information-Oriented Society - Aiming at the Creation of New High-Speed, Large-Capacity Computing Technology Based on Quantum Effects, Molecular Functions, Parallel Processing, etc.- AREA
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