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. 24, 2026
Filed:
Feb. 06, 2021
Combined Conditional Access Development and Support, Llc, Philadelphia, PA (US);
Lawrence W. Tang, San Diego, CA (US);
Douglas M. Petty, San Diego, CA (US);
Combined Conditional Access Development and Support, LLC, Philadelphia, PA (US);
Abstract
Methods for system component pairing and authentication are described. A challenge message is transmitted to a device. A reply message is received from the device in response to the challenge message. A length of time between transmitting the challenge message and receiving the reply message is determined. The length of time between transmitting the challenge message and receiving the reply message is compared to an expected time. Whether the reply message was received from the device is determined based on the comparing the length of time to the expected time. Communication is enabled with the device based on the determining that the reply message was received from the device.