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:
Apr. 27, 2021
Filed:
Apr. 15, 2019
Applicant:
Lexmark International, Inc., Lexington, KY (US);
Inventors:
Stephen Porter Bush, Richmond, KY (US);
Jennifer Topmiller Williams, Lexington, KY (US);
Assignee:
LEXMARK INTERNATIONAL, INC., Lexington, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/06 (2006.01); G06F 11/07 (2006.01); G06F 21/71 (2013.01); G06F 21/62 (2013.01); G11C 29/14 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0623 (2013.01); G06F 3/0659 (2013.01); G06F 3/0679 (2013.01); G06F 11/0754 (2013.01); G06F 21/62 (2013.01); G06F 21/71 (2013.01); G11C 29/14 (2013.01);
Abstract
An example method for restricting read access to content in the component circuitry and securing data in the supply item is disclosed. The method identifies the status of a read command, and depending upon whether the status disabled or enabled, either blocks the accessing of encrypted data stored in the supply chip, or allows the accessing of the encrypted data stored in the supply chip.