Signal conversion system

Abstract

Abstract PURPOSE:To securely transfer information to a storage medium by selecting a memory driving signal from plural driving signal generation means as a memory read driving signal in accordance with the kind of a packed storage medium. CONSTITUTION:If the loaded card memory 2 is a RAM, an identification signal 'L' is fed to a selection switching circuit 19 from an identification part 21. Thus, the driving signals s1 of a driving signal generator 11 are selected. Consequently, a first driving signals s1 are supplied to a read control part 18 and a write control part 20. If the card memory 2 is a ROM, the identification signal 'H' is supplied to the selection switching circuit 29 from the identification part 21. Thus, the driving signals s2 with frequency f2(0.5MHz) in a second driving signal generator 12 is fed to the read control part 18 and the write control part 20. Consequently, stored information stored in a buffer memory 16 is read in the frequency f2(0.5MHz) of the driving generator 12, and is written into the card memory 2.

Inventors

• 👤 Hiroyuki Watabe
• 👤 Yutaka Yunoki

Bibliographic Details