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. 28, 2010
Filed:
Oct. 18, 2002
Chih Jen Kuo, Milpitas, CA (US);
Miao LI, San Jose, CA (US);
Wei Luo, San Jose, CA (US);
O2Micro International Limited, Grand Cayman, KY;
Abstract
A smart card enabled secure computing environment system locks the host computer system from user access and waits for a smart card to be inserted into an attached or co-resident smart card reader. When a smart card is inserted into the smart card reader, the invention asks the user to enter his smart card password which is compared to the password on the smart card. If the two passwords match, the invention looks up the user's username in an access file of valid users and finds its associated access times and/or cumulative time limits in the access file. if the current time is within any of the valid access times and the user's cumulative usage time is within the specified cumulative time limit, then access is granted and the system is unlocked. The invention periodically checks the current time while the user is using the computer. If a blocked time period is entered or a cumulative time limit is exceeded, the user is logged off the machine and the computer is locked from user access. If at any time the user's smart card is removed from the smart card reader the invention will shut down all of the user's programs and lock the system.