US 7,321,842 B2
Chaos index value calculation system
Kakuichi Shiomi, 401, Metro Building, 5-11, Higashi-shimbashi 2-chome, Minato-ku, Tokyo, 105-0021 (Japan); and Susumu Kobayashi, Migawa-Mansion 206, 85-2, Migawa 2-chome, Mito-shi, Ibaraki 310-0912 (Japan)
Assigned to Electronic Navigation Research Institute, an Independent Admiinistrative Institution, Tokyo (Japan), part interest; Kakuichi Shiomi, Tokyo (Japan), part interest; and Susumu Kobayashi, Ibaraki (Japan), part interest
Appl. No. 10/546,479
PCT Filed Dec. 26, 2003, PCT No. PCT/JP03/16954
§ 371(c)(1), (2), (4) Date Jul. 21, 2006,
PCT Pub. No. WO2004/075074, PCT Pub. Date Sep. 02, 2004.
Claims priority of application No. 2003-045386 (JP), filed on Feb. 24, 2003.
Prior Publication US 2006/0265444 A1, Nov. 23, 2006
Prior Publication US 2007/0174377 A2, Jul. 26, 2007
Int. Cl. G06F 19/00 (2006.01)
U.S. Cl. 702—181  [714/25] 27 Claims
OG exemplary drawing
 
1. A chaos theoretical exponent value calculation system, comprising:
a means for reading a time series signal to be subjected to a chaotic analysis;
a means for cutting out said read time series signal for each processing unit for calculating a chaos theoretical exponent value with respect to a sampling time; and
a means for calculating a chaos theoretical exponent value of said read time series signal,
wherein said means for calculating a chaos theoretical exponent value comprises:
a first calculation means for calculating a chaos theoretical exponent value with respect to said sampling time as a microscopic chaos theoretical exponent value, in said cut-out time series signal at a processing unit; and
a second calculation means for calculating the chaos theoretical exponent value of said time series signal with respect to a predetermined time as a macroscopic chaos theoretical exponent value, based on said microscopic chaos theoretical exponent value.