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:
Jul. 28, 2020
Filed:
Jun. 07, 2018
The Charles Stark Draper Laboratory, Inc., Cambridge, MA (US);
The Trustees of the University of Pennsylvania Penn Center for Innovation, Philadelphia, PA (US);
Andre′ DeHon, Cambridge, MA (US);
Udit Dhawan, New Delhi, IN;
The Charles Stark Draper Laboratory, Inc., Cambridge, MA (US);
The Trustees of the University of Pennsylvania Penn Center for Innovation, Philadelphia, PA (US);
Abstract
A method includes receiving, for metadata processing, a current instruction with a associated metadata tags. The metadata processing is performed in a metadata processing domain isolated from a code execution domain including the current instruction. Each respective associated metadata tag representing a respective policy of the composite policy. The associated metadata tags further including pointers to tags of a component policy of the composite policy. For each respective metadata tag, the method includes determining, in the metadata processing domain and in accordance with the metadata tag and the current instruction, whether a rule exists in a rule cache for the current instruction. The rule cache including rules on metadata used by said metadata processing to define allowed instructions. The determination of whether a rule exists resulting in a respective output. The method further includes generating a composite result tag by combining the respective outputs into a single metadata tag representing the composite policy including each respective policy.