Adaptive precorrection of signal combiners using passive hybrid junction sample cancellation
US6356742B1 · kind B1 · utility
1Cited by
8References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 30, 1999 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Aug 30, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/38
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A circuit and method for adaptive precorrection of first signals applied to RF signal combiners of a broadcast signal transmitter provides a sample of the combined signal output of the RF combiner and a sample of a second signal to a hybrid so as to cancel from the combined signal the second signal, and to apply the resulting signal sample representing the first signal to an adaptive precorrector which precorrects the first signal before it is applied to the RF combiner. The circuit and method can be used with a two signal combiner, or with a multiple signal combiner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.