Differential input interface circuit and method for adjusting DC levels of differential input signals
US6259300A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2000 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Jan 3, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/0682
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A differential input interface circuit includes a reference level generation stage generating a DC level that coincides with the DC level within the system; capacitors for cutting-off the DC level of the differential input signals; resistors for matching the average of the non-inverting phase signal and the inverting phase signal of the differential input signals from which the DC levels have been cut-off on the output DC level generated by the reference level generation stage. Thus, a differential input interface circuit make it possible to match the DC level of differential inputs to the DC level within a system which is responsive to the differential inputs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.