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. 15, 2012
Filed:
Jan. 20, 2008
Reuven Elbaum, Haifa, IL;
Reuben Sumner, Rechovot, IL;
Reuven Elbaum, Haifa, IL;
Reuben Sumner, Rechovot, IL;
NDS Limited, Staines, Middlesex, GB;
Abstract
A system, comprising an external memory operative to store data therein, the data including a plurality of sections, each of the sections being associated with a signature, and an internal memory operationally connected to the external memory, and a processor arrangement operationally connected to the internal memory, the processor arrangement including a transfer module to transfer one section from the external to the internal memory, an authentication module to authenticate the signature of the section transferred from the external memory, a validity status module to identify the section as valid if the signature is authentic, and an execution module to utilize the section of the data only if the section is valid, wherein the validity status module is operative to invalidate the section, if the content of the section is changed while stored in the internal memory. Related apparatus and methods are also described.