Filter switching method
US6208687A · kind A · utility
7Cited by
2References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 4, 1999 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | May 4, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2017/0295
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A filter apparatus (1) has a digital FIR filter (8) divided into two or more sections (6, 12) with means (18, 20, 22, 24, 26, 40) for varying the filter function of each section (6, 12). The filter (1) has an input switch (2,4) and an output switch (28, 30,32) which includes a fader (28, 30, 32) to enable one or more section (6, 12) to be switched out of circuit without disrupting the passage of signals to be filtered through the other section or sections (6, 12) of the filter (8). The filter function of each section (6, 12) is adjustable when the section (6,12) is switched out of circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.