公开(公告)号：US3482057A

公开(公告)日：1969-12-02

申请号：US3482057D

申请日：1966-01-28

Applicant: IBM

Inventor： ABBOTT GEORGE F ,  CEONZO JOSEPH A ,  ISENBERG JOHN F JR ,  JOHNSON ROBERT A ,  REGAN JOHN M

IPC: H04Q3/54 ,  H04Q3/545 ,  H04M3/60

CPC classification number: H04Q3/545 ,  H04Q3/54

公开(公告)号：CA832080A

公开(公告)日：1970-01-13

申请号：CA832080D

Applicant: IBM

Inventor： JOHNSON ROBERT A ,  ABBOTT GEORGE F ,  CEONZO JOSEPH A ,  REGAN JOHN M ,  ISENBERG JOHN F JR

公开(公告)号：CA957948A

公开(公告)日：1974-11-19

申请号：CA159064

申请日：1972-12-13

Applicant: IBM

Inventor： ABBOTT GEORGE F ,  GILLEY CHARLES H ,  SKATRUD RALPH O

IPC: G07F7/10

Abstract: A cryptographic credit card device having a non-linear character generator based on a personalized read only storage and dynamic logic elements for manipulating data is disclosed.