Switching circuit having error detection capability
US5453990A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1993 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | Apr 20, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/318516
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Switching circuits are connected between data input lines to and data output lines to connect switch paths between them. A two-input selector is connected to each of the data input lines to supply a data input signal or a test signal to the switching circuits. The selection of the two signals depends on whether the data input line is being used or not. The switch path connections in the switching circuits are controlled by the switching control circuits. Normally, a particular switch path is connected, but while testing, all the switch paths of an unoperated switching circuit which is not normally selected, are connected by a test address signal. The outputs of the switching circuits are detected by an error detector and compared with an expected data sequence, which indicates which output of the switching circuits is detected by the error detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.