Circuit arrangement for processing sampled analog electrical signals
US5012133A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 1990 |
| Grant date | Apr 30, 1991 |
| Priority date | — |
| Expiry date | Feb 13, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C27/028
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A circuit for processing sampled analog current signals, includes means for combining, in predetermined proportions, the input sample current in a present sample period with current(s) derived from input sample current(s) in one or more preceding sample periods, and apparatus for deriving the processed output signal from the combined current produced by the combining means in successive sample periods. The circuit consists of a plurality of circuit modules, for example, scaling, memory, and integrator modules, each of which may be capable only of processing unidirectional currents. In order to provide easy interconnection of the modules, each module is arranged to receive and deliver bidirectional currents and to generate internally bias currents to enable conversion from bidirectional to unidirectional currents and vice versa. In order to increase the accuracy of current summing at inputs to the modules, the input circuit of the module is arranged as a current conveyor circuit which has a very low input impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.