发明名称 |
KRETS FOR BEHANDLING AV SIGNALER SOM TAS EMOT AV EN MOSAIK AV ULTRALJUDGIVARE I B-MOD EKOGRAFI |
摘要 |
A processing circuit is connected to the output of a mosaic which consists of n first electrodes on a first principal surface of a TGS plate and 2p second electrodes on the second principal surface thereof. The circuit is constructed so that the output connections of the second electrodes are grouped in p resultant groups which are connected, via p paths which each comprise an amplifier and a variable delay line, to the inputs of a first adder. The output of the first adder is connected, via a network of (q-1) delay lines having a fixed delay time, to the inputs of q parallel variable delay lines which are connected in parallel and which are connected to the inputs of a second adder. The delay times thus realized are controlled so that a first ultrasonic lens and a second ultrasonic lens are successively formed. |
申请公布号 |
SE448596(B) |
申请公布日期 |
1987.03.09 |
申请号 |
SE19800004838 |
申请日期 |
1980.07.01 |
申请人 |
NV PHILIPS' GLOEILAMPENFABRIEKEN |
发明人 |
M J * AUPHAN;L C J * BAGHUIS |
分类号 |
A61B8/00;A61B8/14;G01S7/52;G01S7/523;G01S15/89;G10K11/34;H04R1/00;H04R1/32;H04R3/00;H04R17/00;(IPC1-7):A61B10/00 |
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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