Method of selective control of electrical circuits and a circuit arrangement for carrying out the method
US4719461A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 1986 |
| Grant date | Jan 12, 1988 |
| Priority date | — |
| Expiry date | May 22, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In an effort to reduce the number of "terminal legs" in highly integrated electronic circuits, two different kinds of coded signals are applied successively to the control terminals thereof, namely: binary coded signals applied in parallel and successive pulses. An evaluation is made only of pulses applied to selected terminals, and a different number of pulses is applied to the individual control terminals. The total number of pulses evaluated is counted in a counter. The counter outputs are decoded in a decoder. The binary coded signals also are decoded in a decoder, and the outputs of both decoders are combined in a selection logic so that both kinds of signals together define a control state. In this manner 3.sup.n different control states are obtained by a number n of control terminals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.