Electronic card

• US 8,360,332 B2
• Filed: 04/16/2012
• Issued: 01/29/2013
• Est. Priority Date: 03/26/2005
• Status: Active Grant

• Current Assignee: Privasys Incorporated
• Original Assignee: Privasys Incorporated
• Inventors: Poidomani, Mark, Ziegler, Joan, Foo, Eric, Alon, Ziv, Routhenstein, Lawrence
• Primary Examiner(s): VO, TUYEN KIM
• Application Number:
  US13/448,281
• Publication Number:
  US 20120241523A1
• Time in Patent Office: 288 Days
• Field of Search: 235449-451, 235/492, 235/493
• US Class Current: 235/492
• CPC Class Codes: G06K 19/0702 the arrangement including a battery
• CPC Class Codes: G06K 19/077 Constructional details, e.g. mounting of circuits in the carrier
• CPC Class Codes: G06K 19/07722 the record carrier being multilayered, e.g. laminated sheets flat articles in general, see B32B37/00

Abstract

An electronic card that, once activated, can drive a set of user data from a first secure microprocessor through a signal line to a second processor, process the set of user data in the second processor to generate a series of digital transaction signals, drive the series of digital transaction signals into a RC specialty circuit, convert the series of digital transaction signals into two distinct analog waveform signals, and drive the two distinct analog waveform signals along at least two tracks such that the first analog signal and the second analog signal cancel each other magnetically so that the resulting magnetic flux at a target broadcast area replicates the magnetic field created in a magnetic stripe.

Claims

1. A card for use in a financial transaction, including the acts of:

activating the card through an activation mechanism;

driving a set of user data from a first secure microprocessor through a signal line to a second processor;

processing the set of user data in the second processor to generate a series of digital transaction signals;

driving the series of digital transaction signals into a RC specialty circuit;

converting the series of digital transaction signals into two distinct analog waveform signals;

driving the two distinct analog waveform signals along at least two tracks such that the first analog signal and the second analog signal cancel each other magnetically so that the resulting magnetic flux at a target broadcast area replicates the magnetic field created in a magnetic stripe.

2. The card of claim 1 further comprising a user selection mechanism operable to allow a user to select a transaction card function from at least two different transaction card functions that the card is operable to perform and the set of user data contains at least some data specific to the transaction card function.

3. The card of claim 2 wherein the set of user data includes a piece of data that is generated by a cryptographic algorithm in response to the user selection mechanism.

4. A card for use in a magnetic stripe reader, comprising:

a first processor operatively coupled to a power supply and a second secure processor;

at least two transmission lines connecting the second secure processor to an RC conversion circuit; and

at least two broadcasting lines connected to output from the RC conversion circuit and wound around a strip of magnetic broadcasting enhancement material;

wherein signals from the second secure processor are converted in the RC conversion circuit such that when the converted signals are pulsed on the at least two broadcasting lines, magnetic flux patterns are present on that simulates a static magnetic strip operable to be read by a magnetic read head of the magnetic stripe reader; and

wherein the second processor is not directly connected to a non-secure port of the card.

5. The card of claim 4 wherein the second secure processor contains a packet of card information stored in secured storage and the packet of card information includes an account number and a cryptographic key.