Content processor
US7031316B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2002 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Mar 12, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A content processor is described that is able to scan the contents of entire data packets including header and payload information. The content processor includes a queue engine operable to reorder out of order data packets and reassemble fragmented data packets. The queue engine sends the reordered and reassembled data packets to the context engine, which schedules the packets to be scanned. The packets are scanned by the content scanning engine using one or more string memories and one or more leaf string memories. The string memories are used by the content scanning engine to determine if there is a potential match between the data packet being scanned and any of the strings contained in database of known strings. If a potential match is identified, whether or not there is an exact match is determined using the leaf string memories and the leaf string compare engine. The scanning of the data packet results in a conclusion being generated by the content scanning engine. The conclusion can be an intermediate conclusion, can be an instruction to be executed by the content processor, can instruct the context engine to forward the information to a host processor for further analysis,…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.