Mixing circuit
US4527190A · kind A · utility
7Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1982 |
| Grant date | Jul 2, 1985 |
| Priority date | — |
| Expiry date | Dec 9, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A plurality of sampled signals that differ in phase by 2.pi./N (where N is an integer greater than 1) from one another are mixed by sequentially supplying the sampled signals to a holding circuit, the holding circuit output is buffered in a buffer amplifier to produce the system output having a beneficial high-frequency characteristic. Deterioration of the frequency characteristic of the synthesized output signal for a high frequency range due to a low-pass filter effect stemming from the zero hold in the sample/hold circuit is prevented by the mixing circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.