| 摘要 |
<p>PROBLEM TO BE SOLVED: To make an ultrasonic diagnosis capable of being performed at home and at a low cost by providing the remote-controlled transmitter of a television receiver with an ultrasonic probe, a sending delay part for giving a time difference to a piezoelectric element, a receiving delay part for restoring a received signal to its original status after reflection, and a light transmission part corresponding to the piezoelectric element. SOLUTION: An ultrasonic image received by a television receiver is received and demodulated by a first phototransmission/receiving part 25, a second phototransmission/ receiving part 26 and a nth phototransmission/receiving part 27. Then the ultrasonic image is converted to a base band of several MHz by these parts, and is switched to a television signal by a base band signal/television signal switching part 6. Further, a remote-control unit comprises an ultrasonic probe 13 with a piezoelectric element, a sending delay part 25 for giving a time difference between the oscillation of an ultrasonic wave by a first piezoelectric element 14 and the oscillation by a second piezoelectric element 15, a receiving delay part 26 for eliminating a time difference between the time of receiving a signal reflected in about a few milliseconds and the time of sending said signal, and phottotransmission part 17-19 for a reflective received signal corresponding to a n-pieces of piezoelectric element.</p> |
