发明名称 |
ULTRASONOGRAPHIC DEVICE |
摘要 |
<p>Encoded transmission and reception which reduces time side lobe are realized while suppressing increase of circuit scale. Transmission signals corresponding to a composite modulation code sequence composed from two or more modulation code sequences are outputted as transmission signals. A reception means demodulates reception signals stepwise by two or more demodulators. The demodulator can be thereby divided into two or more stages, and therefore with a circuit scale corresponding to the sum of the operation circuit numbers of two or more demodulators, time side lobe reduction effect can be obtained at a level equivalent to that obtainable with a circuit scale corresponding to the product of the operation circuit numbers of two or more demodulators.</p> |
申请公布号 |
EP1695665(A2) |
申请公布日期 |
2006.08.30 |
申请号 |
EP20040820512 |
申请日期 |
2004.12.01 |
申请人 |
HITACHI MEDICAL CORPORATION |
发明人 |
ASAFUSA, KATSUNORI;SHINOMURA, RYUICHI |
分类号 |
A61B8/00;G01S7/52;G01S15/89 |
主分类号 |
A61B8/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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