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. 12, 1998
Filed:
Feb. 04, 1997
Derek L Davis, Phoenix, AZ (US);
Peter Jones, San Jose, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
Implemented preferably within a video camera, a secure data capture device is used to prevent a captured data clip from be fraudulently altered without detection. The secure data capture device performs 'time-bracketing' and/or 'sequence ordering' operations to preserve data integrity through implementation of two registers incorporating a 'State of the Universe' ('SOTU') number and a 'sequence' number, respectively. Time-bracketing is performed by digitally signing a running hash value representing the data clip appended to the SOTU number before the digital signature is 'timestamped'. Sequence ordering is performed by digitally signing the digest of the data frame or multiple data frames along with the sequence number.