Digital waveform generator
US3983495A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1975 |
| Grant date | Sep 28, 1976 |
| Priority date | — |
| Expiry date | Sep 29, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/227
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This generator generates COS(w.sub.o + w.sub.m)t, SIN(w.sub.o + w.sub.m)t, COS(w.sub.o - w.sub.m)t and SIN(w.sub.o - w.sub.m)t square wave waveforms. This is accomplished by inserting into a carrier square wave clock pulse stream one pulse with the cooperation of a modulation square wave clock in a first signal channel and by deleting from the carrier square wave clock pulse stream one pulse with the cooperation of the modulation square wave clock in a second signal channel. The resultant pulse stream in the first signal channel is suitably divided in a first binary divider and then further divided by a factor of two in a second binary divider to generate the COS(w.sub.o + w.sub.m)t waveform. The complement of the output waveform of the first binary divider is further divided by a factor of two in a third binary divider to generate the SIN(w.sub.o + w.sub.m)t waveform. The resultant pulse stream in the second signal channel is similarly operated on to generate the COS(w.sub.o - w.sub.m)t and SIN(w.sub.o - w.sub.m)t waveforms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.