The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2008
Filed:
Apr. 28, 2003
Francis K. King, San Jose, CA (US);
Jeffrey Liu, San Jose, CA (US);
Francis K. King, San Jose, CA (US);
Jeffrey Liu, San Jose, CA (US);
Dcard, Inc., Milpitas, CA (US);
Abstract
This invention discloses a data card that has a plurality of data arcs and also a linear data track, e.g., a magnetic or optical data strip, disposed on a flat data storage medium. The data card may be employed as a credit card or ID card with conventional magnetic strip for storing conventional data operable with conventional card reader. The data arc segments may be employed to store additional information for authenticating cardholder's personal biometrics information to prevent credit card or ID card frauds. In one embodiment, the data tracks further include at least one full circle data track provided with data for conveniently determining a central position of the data card in a data drive system. The data stored in the full circle data track can also be conveniently used to obtain a measurement of average signal amplitude to calibrate the signal measurements from the data card. The dynamic head loading and unloading configuration and a card insertion lock.