Method for setting masks for message filtering
US7274699B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 2002 |
| Grant date | Sep 25, 2007 |
| Priority date | — |
| Expiry date | Sep 30, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/40215
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is provided for determining a global mask value for filtering incoming messages in a CAN environment having a predetermined number of match registers, where the global mask value has one or more bits. A set of incoming messages to be identified is established. Each of the one or more bits in the global mask value is set to a first digital value. The following steps are repeated until the set of incoming messages to be identified fits within a predetermined number of match registers: adding a don't_care bit to the global mask value and determining a best position for the added don't_care bit. The don't_care bit is represented by a second digital value in the best position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.