Method for determining the number of defective digital bits (defective bit number) transmitted over a data-transmission path to be tested, and device for the carrying out of the method
US5600660A · kind A · utility
10Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 18, 1994 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | Oct 18, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/242
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A data transmission path, which is to be tested, has an input end provided with a digital test sequence. An output sequence, received on an output end of the data-transmission path, is correlated with a reference sequence corresponding to the test sequence by performing a cyclically bit-wise shifted exclusive-OR operation followed by forming a check-sum to form a binary cross-correlation. The low-order positions of an extreme value (i.e., minimum or maximum) of the cross-correlation function, directly indicate the number of defective bits in the output sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.