Monitor system for a digital signal
US4309767A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1979 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Aug 21, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/1205
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A monitor system comprising: PA1 an adder for summing up a plurality of unknown analog electric quantity signals denoting the operating conditions of such as a transmission line; PA1 a multiplexer for generating output signals corresponding to the plural analog electric quantity signals and also to a signal denoting the result of addition made by said adder; PA1 an A-D converter for converting output analog signals from the multiplexer into digital signals; and PA1 a monitor which sums up those of the output digital signals from the A-D converter which correspond to said plural analog electric quantity signals, compares a signal denoting the result of said addition with a digital signal converted from an output signal from the adder, receives an error detection signal denoting the known prescribed electric quantity converted into a digital signal through the multiplexer and A-D converter, and judges the operating condition of the A-D converter from the contents of said received digital signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.