System for real-time cross-domain system packet filtering
US8938795B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2012 |
| Grant date | Jan 20, 2015 |
| Priority date | — |
| Expiry date | Mar 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/64322
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for filtering a digital signal transmitted in a protocol featuring multi-level packetization from a first server to a second server. The first server is coupled to the second server via a one-way data link. The system includes a filter having an input for receiving the digital signal and an output. The filter is configured to analyze the digital video signal and determine whether the digital signal violates one or more predetermined criteria. The filter may be within the first server, or alternatively, within the second server. The predetermined criteria may be unauthorized security level information included within metadata transmitted with the digital video signal. The predetermined criteria may also be format information that, when not conformed to, indicates potential malware or other bad content included within the digital video signal. The filter provides low data transfer latency and/or decoupling of data filter latency from data transfer latency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.