Data transmission systems
US5889864A · kind A · utility
7Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1996 |
| Grant date | Mar 30, 1999 |
| Priority date | — |
| Expiry date | Jul 16, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0061
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a data transmission system in which a cyclic redundancy checksum value is derived in respect of each block of data bit values to be transmitted over the system, the checksum value in respect of blocks of data bit values intended for preselected ones only of the stations of the system is preloaded with a predetermined or netkey value to be used by the preselected stations such that only those stations can correctly decode the signals intended for them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.