Title:
WAVEFORM IDENTITY IDENTIFICATION CIRCUIT
Document Type and Number:
Japanese Patent JP3519839
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide the waveform identity identification circuit by which the identify of waveform is accurately discriminated even when an input signal is switched for a very short time only for the discrimination of the identity of waveform.
SOLUTION: The circuit is provided with sampling means 7, 8 which receive selected input signals F1, F2 directly and sample the signals F1, F2 in response to a sampling command and store the sampled values, a discrimination means 9 that compares the sampled values of the signals F1, F2 stored in the sampling means 7, 8 so as to discriminate whether or not the waveform is identical, and a sampling timing detection means 12 monitoring a frequency distribution state of the input signal F1 to discriminate whether or not a prescribed amount or over of a set frequency band component is included or over. The sampling timing of the sampling means 7, 8 is controlled by an output of the sampling timing detection means 12.
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| WO/1989/011181 | METHOD AND SYSTEM FOR SIGNAL DETECTION |
Inventors:
Yamamoto, Yuji
Application Number:
JP29407095A
Publication Date:
April 19, 2004
Filing Date:
November 13, 1995
Export Citation:
Assignee:
PIONEER ELECTRON CORP
International Classes:
H03J7/18; H04B1/16; H04H60/37; H04H20/26; (IPC1-7): H04B1/16; H03J7/18
Attorney, Agent or Firm:
瀧野 秀雄 （外１名）
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