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:
Apr. 18, 2017
Filed:
Oct. 05, 2007
Timothy Andrew Lewis, El Dorado Hills, CA (US);
Timothy Andrew Lewis, El Dorado Hills, CA (US);
KINGLITE HOLDINGS INC., Singapore, SG;
Abstract
Upon initialization or startup of an electronic device, the device checks a predetermined section of non-volatile memory, referred to as the signature byte or lock byte, and allows either the manufacturing mode which allows for installation of the final or production version of firmware to be loaded into non-volatile memory, or the production mode which write-protects certain portions of non-volatile memory before giving operating control of the electronic device to another program, for example, an operating system. By only allowing execution of operating system or other executable code after write-protecting certain portions of non-volatile memory, system security, integrity, and robustness are substantially increased.