| 摘要 |
<P>PROBLEM TO BE SOLVED: To store an assert edge, even in a reproduction pulse in a pulse signal reproduction apparatus for removing noise contained in a pulse signal. <P>SOLUTION: The apparatus is provided with an RS-FF10 and a reset signal generator 20, provided with a borrow pulse generator 200 monitoring noise included in an input pulse signal. When the input pulse signal is asserted, the RS-FF10 is set and thereafter, a borrow pulse generator 200 starts monitoring of the presence/absence of the noise. When a noise removal object period passes without presence of the noise, the RS-FF10 is reset. The assert edge of a reproduction pulse is generated with the assert edge of the pulse signal as a start point, and the negate edge of the reproduction pulse is generated, after a period not shorter than a noise gate period passes without noise. Thus, even when the noise is superimposed to the pulse signal, the pulse signal from which the noise is removed can be reproduced, while keeping the occurrence timing of the assert edge. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
