High-speed signal search method device and recording medium for the same
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United States of America Patent
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Nov 30, 2004
Grant Date -
N/A
app pub date -
May 4, 1999
filing date -
Jun 1, 1998
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Abstract
The object of the present invention is to provide a high-speed signal search method, device, and a recording medium for the same that can obtain detection results equivalent to precisely moving a window over the entire region of the input signal even when there is not precise movement of a window over the entire signal. The present invention provides a first step that generates a feature quantity sequence for a pre-recorded reference signal; a second step that sets the input signal window for the input signal that has been input; a third step that generates a feature quantity sequence for the input signal of this input signal window; a fourth step that calculates the input signal similarity value showing the degree of similarity between the feature quantity sequence generated in the first step and the feature quantity sequence generated in the third step; a fifth step that calculates the skip width showing the amount that the input signal can be moved; and a sixth step that determines the position of the input signal window based on the skip width calculated in the fifth step, sets the input signal window to this position, and calculates the input signal similarity value for each position of the input signal window by repeating the third step to the sixth step; and further, determines whether or not the reference signal exists at the position that the input signal window presently shows in the input signal based on the result of comparing the input signal similarity value and the predetermined threshold value.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- NIPPON TELEGRAPH AND TELEPHONE CORPORATION
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Kashino, Kunio | Tokyo, JP | 44 | 162 |
Murase, Hiroshi | Tokyo, JP | 48 | 544 |
Smith, Gavin | Cambridgeshire, GB | 35 | 423 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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