Digital signal processing apparatus for frequency demultiplexing or multiplexing
US6118794A · kind A · utility
19Cited by
4References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 16, 1997 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Sep 16, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J1/05
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Digital signal processing apparatus for frequency demultiplexing a wide band channel which converts the data stream into parallel branches by means of serial-to-parallel conversion, and demultiplexing which consists of low pass and high pass fine filtering stages and a coarse filtering stage split among processors across parallel branches. Wideband signals arc processed without expensive processors because of the slower rate in the parallel channels. This may also be used for the inverse function of multiplexing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.