G - Physics – 06 – K
Patent
G - Physics
06
K
354/40
G06K 5/00 (2006.01) G07F 7/08 (2006.01)
Patent
CA 1135419
ABSTRACT A remotely controlled verification lockout of the verification memory used in conjunction with fuel dispensing systems, service dispensing systems (such as automatic bank tellers), and the like is provided. At each user location, a verification memory is provided in which a single binary data bit is stored at each different verification address location. Each document or credit card used with the system has unique identifying information encoded on it for addressing a specific location in the memory which corresponds to the verification check for that credit card. Provision is made for automatically initializing the status of all of the information stored in all of the verification memories in the system by the transmission of an initializing signal to those memories from a central processor by way of suitable communications lines. In addition, on a periodic basis or at irregular intervals a change in the status of any address location in the verification memory may be effected by the central processor transmitting a control character which is decoded by logic at the fuel dispensing station to place the verification memory in its "write" mode of operation. This character then is followed by the addresses of the various memory locations which are to be changed or updated, and those addresses are changed accordingly. Thus, each of the different memory locations which are to be changed are individually addressed to establish the "valid" or "non-valid" binary data bit storage at the location corresponding to the different credit cards for which the verification memory status is being changed.
350607
Engineered Systems Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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