DIGITAL RF MEMORY DEVICE

摘要

PROBLEM TO BE SOLVED: To suppress a spuriousness by storing addresses equivalent to one cycle of a a digital signal as reproducing addresses and performing a control reading out the digital signal of the storage area to reproduce a repetitive signal having no phase shift. SOLUTION: The digital signal of the output of an A/D conversion part 11 equivalent prescribed cycles are stored in the area of addresses A0∼An of a memory part 12. A memory control part 14 detects the leading address AL of plural amplitude values coinciding with amplitude values (reference amplitude values) of plural pieces of addresses A0∼A0+n from a start and stores addresses among a leading address A0∼a retrieved address AL as reproducing addresses A0∼AL in a reproducing address storage part 19. At the time of reading out the digital signal from the memory part 12, the signal in the storage area of the reproducing addresses is read out. Thus, the repetitive signal having no phase shift is reproduced to suppress the spuriousness.