04791283 is referenced by 280 patents and cites 17 patents.

A device and method for transferring data from a microprocessor located in a transaction card through a card reader by emulating a prerecorded magnetic stripe on a conventional transaction car such as a credit or debit card. Data is sequentially produced by the microprocessor within the card and applied to a magnetic field generator which produces magnetic fields that emulate prerecorded data on a conventional magnetic stripe of a transaction card. This allows transfer of data from a microprocessor to standard card readers without the necessity of substantially modifying the card reader device. Circuitry is also provided for detecting the position and speed of movement of the card through the card reader to ensure that all of the data is transmitted from the microprocessor to the magnetic field generators within the scanning time of the card across read head of the card reader.

Title
Transaction card magnetic stripe emulator
Application Number
6/870005
Publication Number
4791283
Application Date
June 3, 1986
Publication Date
December 13, 1988
Inventor
Norman S Burkhardt
Westminster
CO, US
Agent
Dorr Carson Sloan & Peterson
Assignee
Intellicard International
CO, US
IPC
G06K 19/06
G06K 7/08
View Original Source