Digital testing apparatus
US4204228A · kind A · utility
4Cited by
1References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 1978 |
| Grant date | May 20, 1980 |
| Priority date | — |
| Expiry date | May 9, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/035
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus is disclosed for producing a test signal having a predetermined amount of distortion, including a first pulse generator (11) for producing a plurality of first pulses, a distortion pulse generator (18, 21) for producing a plurality of distortion pulses, and an adder circuit for adding the first and distortion pulses to produce a composite signal having a main portion of amplitude and shape identical to the first pulse and to which is added at least one of the distortion pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.