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:
Dec. 08, 2020
Filed:
Jun. 11, 2019
Nxp Usa, Inc., Austin, TX (US);
Bin Sai, Tianjin, CN;
Shixiong Lu, Tianjin, CN;
NXP USA, Inc., Austin, TX (US);
Abstract
In a System on a Chip (SOC) having multiple masters and multiple slaves connected to a bus via a crossbar switch, a time-based secure access control system of the SOC includes a central access control (CAC) circuit coupled to the master devices through respective channels to receive time-based access requests from the masters. Each slave is connected to a slave access control (SAC) circuit and each SAC circuit includes an access time control (ATC) circuit in communication with the CAC circuit and a dedicated timer. The CAC circuit controls the ATC circuits to limit the access permission from the masters to the slaves by checking whether a requested access time has expired.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile