Waveform generator
US4404644A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 1981 |
| Grant date | Sep 13, 1983 |
| Priority date | — |
| Expiry date | May 14, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/15
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A waveform generator for generating a plurality of repetitive digital waveforms having a common repetition period which is an integral number of periods of a clock signal, the transitions of each waveform during the repetition period occurring synchronously with pulses of the clock signal comprises a digital storage device E which is preprogrammed with waveform data and with time interval data for each of the waveforms, an address counter D, an interval counter G, a latch F and a clock pulse source Y. The interval counter G is arranged to count to a predetermined count number when it is reset to a value determined by the time interval data present at the output of the storage device E and this sequence is repeated. Shortly after the predetermined count number is achieved the interval counter G supplies an address bit to the storage device E and a count signal to the address counter D so that the device E delivers the pertaining waveform data. Shortly before the predetermined count number is next achieved by the interval counter G it delivers a latch operation signal to latch F thereby transferring the available waveform data to the output thereof and this sequence is repeated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.