H03M 3/504
The final digital/analogue converter being constituted by a finite impulse response [fir]
Official title: {the final digital/analogue converter being constituted by a finite impulse response [FIR] filter, i.e. FIRDAC}
H03M3/504 (The final digital/analogue converter being constituted by a finite impulse response [fir]) appears on 90 US grants and 61 published applications in this corpus.
Search patents in H03M- Granted patents
- 90
- Published applications
- 61
- Assignees
- 62
- Inventors
- 160
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 1 |
| 2002 | 4 | 4 |
| 2003 | 2 | 2 |
| 2004 | 2 | 3 |
| 2005 | 3 | 2 |
| 2006 | 2 | 3 |
| 2007 | 3 | 3 |
| 2008 | 3 | 2 |
| 2009 | 6 | 4 |
| 2010 | 2 | 4 |
| 2011 | 3 | 2 |
| 2012 | 3 | 2 |
| 2013 | 4 | 1 |
| 2014 | 6 | 7 |
| 2015 | 4 | 4 |
| 2016 | 5 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 3 | 4 |
| 2020 | 4 | 3 |
| 2021 | 3 | 1 |
| 2022 | 2 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- System and methods for data compression and nonuniform quantizers23 Jan 2024US 11,882,316 B2Cable Television Laboratories, Inc.
- Sigma delta modulator and method therefor14 Mar 2023US 11,606,102 B2NXP B. V.
- Optical communication apparatus and correcting method2 Aug 2022US 11,405,049 B2Fujitsu Optical Components Limited
- Delta-sigma sensing device8 Oct 2026US 2026/0312600 A1Consejo Superior De Investigaciones Cientificas (Csic)
- Delta-sigma modulators with downsampled digital integrators14 May 2026US 2026/0135569 A1NXP B. V.
- Compensation of analog-to-digital converter (adc) gain error18 Dec 2025US 2025/0385681 A1
- Sigma-delta modulator and method for operating a sigma-delta modulator31 Oct 2024US 2024/0364358 A1Robert Bosch GmbH
- Sigma delta modulator and method therefor29 Dec 2022US 2022/0416809 A1NXP B.V.
Most cited
By later US patents
- Sigma-delta digital-to-analog converter with reduced noise163US 5,323,157 AMotorola, Inc. · 1994
- Current-to-voltage converter with controllable gain, and signal processing circuit comprising such a converter138US 6,545,620 B2Koninklijke Philips Electronics N. V. · 2003
- Integral switched capacitor FIR filter/digital-to-analog converter for sigma-delta encoded digital audio127US 5,012,245 AAT&T Bell Laboratories · 1991
- Apparatus and method for a combination D/A converter and FIR filter employing active current division from a single current source98US 5,995,030 AAdvanced Micro Devices, Inc. · 1999
- Multi-stage digital to analog conversion circuit and method55US 5,585,802 AAdvanced Micro Devices, Inc. · 1996