Communications: electrical – Selective
Patent
1976-06-23
1979-01-23
Farley, Richard A.
Communications: electrical
Selective
73626, 340 3C, 340 5MP, G01S 966, G01S 762
Patent
active
041363256
ABSTRACT:
An ultrasonic wave transmitting and receiving apparatus comprises a plurality of electrical-acoustic converting elements arranged in the same plane; a clock pulse generator; a plurality of first switching circuits coupled between the clock pulse generator and each of the electrical-acoustic converting elements; a data signal receiving circuit; a plurality of second switching circuits coupled between the data signal receiving circuit and each of the electrical-acoustic converting elements; a first control circuit adapted to control the first switching circuit so as to radiate a beam of ultrasonic wave from the electrical-acoustic converring element into a to-be-measured subject by sequentially supplying the clock pulse of the clock pulse generator; and to control the second switching circuit so as to sequentially supply to the data signal receiving circuit an electric signal generated from the electrical-acoustic converring element which receives a beam of ultrasonic wave reflected from the subject; three memories coupled to the data signal receiving circuit; a second control circuit adapted to control the memories so as to sequentially write at a predetermined rate data signals from the data signal receiving circuit into the memories and, when the data signal is being written into one of the memories, read data at a rate higher than the predetermined rate from the remaining memories; and an addition circuit adapted to add together the readout data signal from the memories so as to deliver an output.
REFERENCES:
patent: 3370267 (1968-02-01), Barry
patent: 3790925 (1974-02-01), Ahrens
patent: 3914730 (1975-10-01), Jones et al.
patent: 3919683 (1975-11-01), Itamura et al.
patent: 3921122 (1975-11-01), Chirstoff
patent: 4024490 (1977-05-01), Wood et al.
Iinuma Kazuhiro
Takamizawa Kinya
Farley Richard A.
Tokyo Shibaura Electric Co. Ltd.
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