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:
Aug. 04, 2015
Filed:
Feb. 15, 2007
Applicant:
Tom Ryan, Bristol, GB;
Inventor:
Tom Ryan, Bristol, GB;
Assignee:
STMicroelectronics (Research & Development) Limited, Buckinghamshire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 7/167 (2011.01); H04N 21/418 (2011.01); G06F 21/72 (2013.01); H04N 21/426 (2011.01); H04N 21/4623 (2011.01);
U.S. Cl.
CPC ...
H04N 21/4181 (2013.01); G06F 21/72 (2013.01); H04N 21/42623 (2013.01); H04N 21/42692 (2013.01); H04N 21/4623 (2013.01);
Abstract
A semiconductor integrated circuit for processing content data by encrypting or decrypting the data has one or more inputs to received content and metadata. A metadata store comprises two portions, a first portion for storing metadata itself and a second portion for storing an address of locations of bitfields of metadata. This arrangement allows for efficient storage of the metadata but requires certain rules to ensure that bitfields of metadata cannot be stored and used with anything other than the content with which the metadata is associated.