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:
Jan. 15, 2019
Filed:
Jul. 20, 2017
Tionesta, Llc, San Antonio, TX (US);
David C Murray, San Antonio, TX (US);
James A Moryl, Helotes, TX (US);
TIONESTA, LLC, Austin, TX (US);
Abstract
The present invention relates to a SIM multiplexing device that provides a mechanism for multiplexing multiple SIM cards into a single SIM device. The SIM Mux device interfaces to the host device via the host device's standard SIM slot. The SIM Mux application resides on the SIM Mux logic device and communicates with the device over the SIM slot's SIM I/O line using standard ISO-7816 messages. The SIM Mux application allows a user to select the active SIM slot via a SIM application interface and directs the logic device which SIM socket to activate on the shared SIM I/O line, thus enabling the user to utilize any one of the populated SIM cards at one time.