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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.:

US 7137003 B1

PDFFull Text
Date of Patent:
Nov. 14, 2006

Filed:

Jun. 15, 2001

Subscriber identity module verification during power management

Applicants:

Chidambaram Krishnan, San Diego, CA (US);

James A. Hutchison, Iv, San Diego, CA (US);

Tom Summers, San Diego, CA (US);

Inventors:

Chidambaram Krishnan, San Diego, CA (US);

James A. Hutchison, IV, San Diego, CA (US);

Tom Summers, San Diego, CA (US);

Assignee:

Qualcomm Incorporated, San Diego, CA (US);

Attorneys:

Philip R. Wadsworth

Charles D. Brown

George C. Pappas

Primary Examiner:

Gilberto Barron, Jr

Assistant Examiner:

Aravind K Moorthy

Int. Cl.
CPC ...
H04L 9/00 (2006.01); G06F 1/32 (2006.01); G06F 7/04 (2006.01); G06F 1/26 (2006.01); H04M 1/66 (2006.01);
U.S. Cl.
CPC ...
Abstract

Power management techniques for a Subscriber Identity Module (SIM) of a wireless communication device (WCD) are described tat make use of a unique identifier for the SIM. In particu1ar a processor within the WCD reads a first unique identifier from the SIM when power is initially supplied to the WCD, and stores the first unique identifier within a computer-readable medium within the WCD. During a power management cycle, where power is terminated and then re-supplied to the SIM, the processor again receives a unique identifier from the SIM and compares the second unique identifier with the stored unique identifier. These tecbniques are useful in detecting whether the attached SIM has been exchanged for a different SIM while powered down during a power management cycle.

Find Patent Forward Citations

Krishnan, Chidambaram. (2006). Subscriber identity module verification during power management (U.S. Patent No. 7137003). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7137003

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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