Protocol analyzer and time precise method for capturing multi-directional packet traffic
US7173943B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2002 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Feb 26, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L43/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for selecting and recording multi-directional communication packet traffic in a compact manner in realtime while maintaining relative time between the selected packets passing in one direction and the selected packets passing in another direction. The apparatus includes a protocol interface, a block datapath, a record resource, and a trace merge memory. The protocol interface receives X and Y channel packets with interspersed idle times, segments the packets into time-aligned X and Y blocks, and eliminates idle times. The block datapath merges the X and Y blocks, then filters unneeded X and Y channel packets by purging the X and Y blocks from those packets. The record resource compares patterns for identifying the unneeded packets and trigger events. The trace merge memory records the time-aligned filtered merged block stream in a compact form for later analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.