OUTBREAK NOISE REMOVER

摘要

PPROBLEM TO BE SOLVED: To provide an abrupt noise remover which can remove abrupt noise even from data of only once without requiring a large capacity memory. PSOLUTION: A received MR signal (a) is sampled by an A/D converter 1 and converted into a digital value d1 before being delayed by a time L through an FiFo 2. When an abrupt noise is mixed into the received MR signal (a), an abrupt noise detection circuit 3 outputs a detection pulse N and a shift register 4 provides a first output S1 which becomes "1" for the duration of pulse width of the detection pulse N after a time L-B has elapsed, and a second output S2 which becomes "1" for the duration of pulse width of the detection pulse N after a time L+A has elapsed. A U/D counter 5 counts up at the falling edge of the first output S1 and counts down at the falling edge of the second output S2. An OR circuit 6 outputs "1" only when the count G of the U/D counter 5 is not "0" as a delete designation signal H, and a data delete processing section 7 sets the output from the FiFo 2 forcibly to "0" while the delete designation signal H is outputted. PCOPYRIGHT: (C)2007,JPO&INPIT