Apparatus for pulse train measurement
US4255623A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1979 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Jun 15, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q1/457
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An incoming pulse train is evaluated for interpulse spacing and pulse repetition rate by first shaping the pulses into a desired configuration in a dial pulse shaper (12). The shaped pulses are applied to a pulse counter and controller (14) to generate numerator and denominator signals of a divide function. The numerator and denominator signals are gated through a data selector (16) to an up counter controller (24). The up counter controller (24) gates a 2 KHz clock to a counter in a divider and display (18) during the denominator signal and during the numerator signal the counter within the divider display (18) is gated to perform the divide functions. The divider and display (18) carries out a division function of the numerator by the denominator with the quotient representing the percent interpulse interval or the pulse repetition rate depending on the mode of operation. In addition, the frequency of a tone pad is measured by actuating a DTMF controller (20) that drives the touch tone pad through the dial pulse shaper (12) which also generates a frequency signal having a configuration for further processing. This frequency signal is gated through the up counter controller (24) t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.