H03H 2218/00
Indexing scheme relating to details of digital filters
H03H2218/00 (Indexing scheme relating to details of digital filters) appears on 224 US grants and 164 published applications in this corpus.
Search patents in H03H- Granted patents
- 224
- Published applications
- 164
- Assignees
- 169
- Inventors
- 452
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 1 |
| 2002 | 5 | 5 |
| 2003 | 7 | 8 |
| 2004 | 1 | 14 |
| 2005 | 3 | 9 |
| 2006 | 9 | 7 |
| 2007 | 11 | 12 |
| 2008 | 9 | 14 |
| 2009 | 7 | 13 |
| 2010 | 12 | 13 |
| 2011 | 13 | 9 |
| 2012 | 13 | 5 |
| 2013 | 10 | 2 |
| 2014 | 15 | 3 |
| 2015 | 7 | 7 |
| 2016 | 4 | 3 |
| 2017 | 2 | 4 |
| 2018 | 5 | 3 |
| 2019 | 7 | 3 |
| 2020 | 3 | 8 |
| 2021 | 3 | 1 |
| 2022 | 5 | 6 |
| 2023 | 5 | 7 |
| 2024 | 5 | 5 |
| 2025 | 3 | 2 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03H 2218/04In-phase and quadrature [i/q] signalsIndexing code67
- H03H 2218/06Multiple-input, multiple-output [mimo]Indexing code65
- H03H 2218/08Resource sharingIndexing code47
- H03H 2218/10Multiplier and or accumulator unitsIndexing code31
- H03H 2218/12Signal conditioningIndexing code17
- H03H 2218/14Non-uniform samplingIndexing code9
- H03H 2218/02CoefficientsIndexing code6
Recent patents
- Digital filter circuit having a number of convolution sub-circuits25 Aug 2026US 12,719,451 B2Rohde & Schwarz GmbH & Co.KG
- Data sensing circuit with parallel digital filter processing18 Aug 2026US 12,712,558 B2Sigmasense, LLC.
- Horner form arbitrary coefficient multiplierless fir filter13 Jan 2026US 12,525,962 B2The Boeing Company
- Convolutions with optical finite impulse response filters30 Sep 2025US 12,430,397 B2International Business Machines Corporation
- In-phase/quadrature-phase generating device and phase shift device using the same6 May 2025US 12,294,334 B2Electronics and Telecommunications Research Institute
- Horner form arbitrary coefficient multiplierless fir filter2 Oct 2025US 2025/0309866 A1The Boeing Company
- Data sensing circuit with parallel digital filter processing13 Feb 2025US 2025/0055467 A1Sigmasense, LLC.
- Filtering device and method30 May 2024US 2024/0178817 A1
- Adaptive filter apparatus, adaptive filter method, and non-transitory computer readable medium23 May 2024US 2024/0171156 A1Asahi Kasei Microdevices Corporation
- In-memory analog channel equalization4 Apr 2024US 2024/0113698 A1Intel Corporation
Most cited
By later US patents
- Efficient and scalable FIR filter architecture for decimation98US 6,260,053 B1Cirrus Logic, Inc. · 2001
- Systems and methods for implementing a sample rate converter using hardware and software to maximize speed and flexibility91US 7,167,112 B2D2Audio Corporation · 2007
- Interpolator, a resampler employing the interpolator and method of interpolating a signal associated therewith83US 6,970,511 B1Lucent Technologies Inc. · 2005
- Linear phase FIR sinc filter with multiplexing75US 6,321,246 B1Cirrus Logic, Inc. · 2001
- Quadrature mirror filters with staggered-phase subsampling73US 4,815,023 AGeneral Electric Company · 1989