SE8204613D0 - DIGITAL FILTER CIRCUIT - Google Patents
DIGITAL FILTER CIRCUITInfo
- Publication number
- SE8204613D0 SE8204613D0 SE8204613A SE8204613A SE8204613D0 SE 8204613 D0 SE8204613 D0 SE 8204613D0 SE 8204613 A SE8204613 A SE 8204613A SE 8204613 A SE8204613 A SE 8204613A SE 8204613 D0 SE8204613 D0 SE 8204613D0
- Authority
- SE
- Sweden
- Prior art keywords
- divide
- bits
- input
- bit position
- inputs
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/06—Non-recursive filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
- Complex Calculations (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Image Processing (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
A controllable shift matrix has inputs and outputs and is responsive to bits of an input signal word X(n) at the inputs of ascending order from a least significant bit position to a most significant bit position for controllably producing an output (weighted X(n) the outputs in which the input signal bits may occupy respectively different bit positions. The matrix comprises a plurality of sections (80-88) including at least one divide-by section (82) coupled between the inputs and outputs and including controlled switch means responsive to control signals (C1 ,C1) for selectively passing bits on divide-by input lines to divide-by output lines of the same order as said divide-by input line bit position, or transferring said divide-by input line bits to respective ones of said divide-by output lines which are more than one bit position lower in order than divide-by input line bit positions. A weighting function circuit comprises two such matrices which commonly receive the input word for shifting it in different ways, and a combining circuit for combining the shifted words produced by the matrices to produce a weighted word (Fig. 2 not shown). A digital filter comprises the weighting function circuit allowing reduced complexity and higher speed in coefficient multiplication. <IMAGE>
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8124927 | 1981-08-14 | ||
| US36382782A | 1982-03-31 | 1982-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE8204613D0 true SE8204613D0 (en) | 1982-08-06 |
| SE8204613L SE8204613L (en) | 1983-02-15 |
Family
ID=26280474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8204613A SE8204613L (en) | 1981-08-14 | 1982-08-06 | DIGITAL FILTER CIRCUIT |
Country Status (12)
| Country | Link |
|---|---|
| KR (2) | KR840001406A (en) |
| AU (1) | AU8698282A (en) |
| DE (1) | DE3230030A1 (en) |
| DK (1) | DK365182A (en) |
| FI (1) | FI822749L (en) |
| FR (1) | FR2511561A1 (en) |
| GB (1) | GB2104695A (en) |
| IT (1) | IT1159084B (en) |
| NL (1) | NL8203196A (en) |
| PL (1) | PL237906A1 (en) |
| PT (1) | PT75359B (en) |
| SE (1) | SE8204613L (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0266004B1 (en) * | 1986-10-27 | 1994-01-12 | Koninklijke Philips Electronics N.V. | Architecture for power of two coefficient fir filter |
| US4982354A (en) * | 1987-05-28 | 1991-01-01 | Mitsubishi Denki Kabushiki Kaisha | Digital finite impulse response filter and method |
| US5262972A (en) * | 1991-07-17 | 1993-11-16 | Hughes Missile Systems Company | Multichannel digital filter apparatus and method |
| KR20210142860A (en) * | 2020-05-19 | 2021-11-26 | 태광산업주식회사 | Fiber for artificial hair with improved dyeability and method for manufacturing the same |
-
1982
- 1982-08-02 PT PT75359A patent/PT75359B/en unknown
- 1982-08-06 SE SE8204613A patent/SE8204613L/en not_active Application Discontinuation
- 1982-08-06 FI FI822749A patent/FI822749L/en not_active Application Discontinuation
- 1982-08-09 AU AU86982/82A patent/AU8698282A/en not_active Abandoned
- 1982-08-10 GB GB08222991A patent/GB2104695A/en not_active Withdrawn
- 1982-08-12 DE DE19823230030 patent/DE3230030A1/en not_active Withdrawn
- 1982-08-13 PL PL23790682A patent/PL237906A1/en unknown
- 1982-08-13 KR KR1019820003642A patent/KR840001406A/en unknown
- 1982-08-13 NL NL8203196A patent/NL8203196A/en not_active Application Discontinuation
- 1982-08-13 FR FR8214134A patent/FR2511561A1/en not_active Withdrawn
- 1982-08-13 IT IT22857/82A patent/IT1159084B/en active
- 1982-08-13 DK DK365182A patent/DK365182A/en not_active Application Discontinuation
- 1982-08-13 KR KR1019820003641A patent/KR840001405A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL237906A1 (en) | 1983-05-09 |
| IT8222857A0 (en) | 1982-08-13 |
| IT1159084B (en) | 1987-02-25 |
| DE3230030A1 (en) | 1983-03-03 |
| AU8698282A (en) | 1983-02-17 |
| FR2511561A1 (en) | 1983-02-18 |
| PT75359A (en) | 1982-09-01 |
| SE8204613L (en) | 1983-02-15 |
| KR840001406A (en) | 1984-04-30 |
| PT75359B (en) | 1984-10-31 |
| FI822749L (en) | 1983-02-15 |
| NL8203196A (en) | 1983-03-01 |
| FI822749A0 (en) | 1982-08-06 |
| KR840001405A (en) | 1984-04-30 |
| GB2104695A (en) | 1983-03-09 |
| DK365182A (en) | 1983-02-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAV | Patent application has lapsed |
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