Circuit for recognizing cyclically occurring pulse sequences
US4370618A · kind A · utility
3Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 21, 1980 |
| Grant date | Jan 25, 1983 |
| Priority date | — |
| Expiry date | May 21, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K23/66
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A circuit for recognizing cyclically occurring pulse sequences includes a counter controlled by a D-type flip-flop circuit to start counting the pulses in the pulse sequence when a specific pulse event occurs. The output of the counter is compared by a comparator with a preset number to provide an output via a gate if the specific pulse event occurs when the number of pulses counted by the counter is equal to the preset number. If the count rises above the preset number the comparator resets the flip-flop and no output is produced by the gate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.