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:
Jun. 19, 2018
Filed:
Jan. 31, 2017
Applicant:
Square, Inc., San Francisco, CA (US);
Inventors:
David Terra, San Francisco, CA (US);
Ross Glashan, San Francisco, CA (US);
Assignee:
Square, Inc., San Francisco, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G06K 7/00 (2006.01); G06K 7/10 (2006.01); G06K 19/07 (2006.01);
U.S. Cl.
CPC ...
G06K 7/10297 (2013.01); G06K 7/0095 (2013.01); G06K 19/0723 (2013.01);
Abstract
A device such as a payment terminal may connect to an externally-driven processing device such as an EMV chip of an EMV chip card, providing signals such as a clock signal to the EMV chip. The payment terminal may obtain information about the EMV chip card or a transaction, and based on that information, modify the clock rate of the clock signal that is provided to the EMV chip. The payment terminal may monitor the operation of the EMV chip at the modified clock rate, in order to determine whether the modified clock rate causes errors in the processing of the EMV chip.