发明名称 |
Auto-correlation circuit for use in pattern recognition |
摘要 |
An auto-correlation unit for pattern recognition to obtain auto-correlation functions as for sampled signals is disclosed N pieces of sample values Xn (n=0 to N-1)are extracted from a series of the sample values expressed with an accuracy of optional multi-bits and the auto-correlation coefficients of these N pieces of the sample values obtained. The sum of sample values Xn and Xn- tau ( tau =0 to P) are calculated. The squared value (Xn+Xn- tau )2 of the added results is previously memorized in a ROM while being addressed by the resultant sum. The auto-correlation coefficients are available by feeding the output (Xn+Xn- tau )2 of the ROM and executing calculation as defined by the following equation: <IMAGE>
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申请公布号 |
US5007101(A) |
申请公布日期 |
1991.04.09 |
申请号 |
US19820454022 |
申请日期 |
1982.12.28 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
IWAHASHI, HIROYUKI;NISHIOKA, YOSHIKI;HAKARIDANI, MITSUHIRO |
分类号 |
G10L15/02;G06F17/15;G06K9/52;G06K9/64;G06T7/00;G10L11/00;G10L15/10 |
主分类号 |
G10L15/02 |
代理机构 |
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