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:
May. 14, 2013
Filed:
Jan. 16, 2008
Dan Anders Lindqvist, Stockholm, SE;
Dan Anders Lindqvist, Stockholm, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
An object of the present invention is to provide a mechanism for tamper detection of electronic devices () in closed units which is robust and low cost. The object is achieved by a method in an electronic device () for detecting if a cover () enclosing the electronic device () has been opened. The cover () comprises an enclosing assembly () which is adapted to fasten the cover () into a closed position. The electronic (device) comprises a non volatile memory (). The non volatile memory () comprises a stored reference signature associated to the enclosing assembly () when the cover () was fastened into a closed position. The method comprises the following steps: (Creating) a signature associated to the enclosing assembly (). Comparing () the created signature with the reference signature. Detecting () that the coverhas been opened when the comparing () results in a difference.