Programmable data acquisition system with a microprocessor for correcting magnitude and phase of quantized signals while providing a substantially linear phase response
US5650951A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1995 |
| Grant date | Jul 22, 1997 |
| Priority date | — |
| Expiry date | Jun 2, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/466
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A programmable data acquisition system including a plurality of input signal channels for receiving a respective input signal during a normal mode of operation is provided. Individual test circuits are used for selecting respective ones of the plurality of channels to receive predetermined reference signals during a test mode of operation while uninterruptedly providing the normal mode of operation in any remaining unselected channels in the data acquisition system. An analog-to-digital (A/D) converter system allows for supplying quantized electrical signals at a predetermined rate. The A/D converter is responsive to any signals carried in the plurality of signal channels as selected by the individual test circuits. A control unit allows for supplying respective control signals to the test circuits and to the converter system. The data acquisition system is coupled to an external microprocessor having a magnitude and a phase corrector through a microprocessor interface that transfers a microprocessor-derived control word from the microprocessor to the control unit. The microprocessor interface further transfers the stream of quantized electrical signals supplied by the converter sy…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.