Regenerative repeater for multi-stage digital signals
US4403330A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 9, 1981 |
| Grant date | Sep 6, 1983 |
| Priority date | — |
| Expiry date | Jul 9, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/4917
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A regenerative repeater provides amplitude and sequence control of an n-stage digital signal having a high transmission rate with at least one clock pulse driven D flip-flop and a differential amplifier arrangement having n-1 threshold voltages. The arrangement is characterized in that the threshold voltages of the differential amplifier arrangement are capable of being switched over by 1d (n-1) binary control signals and for this purpose a multi-emitter transistor having at least n-1 emitter terminals is provided and has a base terminal, connected with the signal input, and with a bias voltage source. In the case of three of more control signals, the common emitter terminals of the control signal differential amplifiers, activated by the latter, are connected with the collector terminals of the transistors of the next-lower control signal differential amplifier. The collector terminals of the n-1 control signal differential amplifiers, activated by the highest control signal, are respectively connected with the emitter terminals of the multi-emitter transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.