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:
Aug. 02, 2022
Filed:
Oct. 01, 2019
Applicant:
Texas Instruments Incorporated, Dallas, TX (US);
Inventor:
Jin-Meng Ho, Plano, TX (US);
Assignee:
Texas Instmments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04L 9/32 (2006.01); B60R 25/10 (2013.01); H04L 9/08 (2006.01); G07C 9/20 (2020.01); G06F 21/10 (2013.01); B60R 25/24 (2013.01);
U.S. Cl.
CPC ...
H04L 9/3268 (2013.01); B60R 25/10 (2013.01); B60R 25/24 (2013.01); G06F 21/10 (2013.01); G07C 9/20 (2020.01); H04L 9/0827 (2013.01); H04L 9/0861 (2013.01); H04L 9/0891 (2013.01); H04L 9/0894 (2013.01); H04L 9/3226 (2013.01); H04L 2209/84 (2013.01);
Abstract
An electronic key fob device, in one embodiment, includes a transmitter, a counter configured to provide a current counter value indicated by a plurality of bits, a memory configured to store an operation key, and a processor coupled to the transmitter and memory. The processor is configured to encrypt the current counter value using the operation key to produce an encrypted counter value, select a subset of the plurality of bits of the current counter value, transmit a message the includes the encrypted counter value and the subset of plurality of bits of the current counter value.