H03M 7/3022
Having multiple quantisers arranged in cascaded loops, each of the second and
Official title: {having multiple quantisers arranged in cascaded loops, each of the second and further loops processing the quantisation error of the loop preceding it, i.e. multiple stage noise shaping [MASH] type}
H03M7/3022 (Having multiple quantisers arranged in cascaded loops, each of the second and) appears on 102 US grants and 71 published applications in this corpus.
Search patents in H03M- Granted patents
- 102
- Published applications
- 71
- Assignees
- 63
- Inventors
- 166
- Latest grant
- 20 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 2 |
| 2003 | 5 | 6 |
| 2004 | 5 | 3 |
| 2005 | 3 | 7 |
| 2006 | 7 | 6 |
| 2007 | 3 | 6 |
| 2008 | 7 | 6 |
| 2009 | 7 | 3 |
| 2010 | 3 | 1 |
| 2011 | 4 | 2 |
| 2012 | 1 | 1 |
| 2013 | 2 | 4 |
| 2014 | 1 | 2 |
| 2015 | 5 | 4 |
| 2016 | 6 | 3 |
| 2017 | 2 | 0 |
| 2018 | 0 | 0 |
| 2019 | 2 | 2 |
| 2020 | 4 | 1 |
| 2021 | 3 | 4 |
| 2022 | 5 | 4 |
| 2023 | 4 | 2 |
| 2024 | 1 | 1 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Information processing apparatus and method20 May 2025US 12,307,723 B2Sony Group Corporation
- Apparatus for mitigating nonlinearity-induced spurs and noise in a fractional-N frequency synthesizer20 May 2025US 12,308,860 B2University College Dublin
- Error cancellation delta-sigma DAC with an inverting amplifier-based filter22 Oct 2024US 12,126,363 B2Cisco Technology, Inc.
- System and method to enhance noise performance in a delta sigma converter23 May 2023US 11,658,678 B2Analog Devices, Inc.
- Phase coherent frequency synthesis16 May 2023US 11,652,488 B2BAE Systems Information and Electronic Systems Integration Inc.
- Error cancellation delta-sigma dac with an inverting amplifier-based filter1 Feb 2024US 2024/0039554 A1Cisco Technology, Inc.
- Information processing apparatus and method19 Oct 2023US 2023/0334704 A1Sony Group Corporation
- Apparatus for mitigating nonlinearity-induced spurs and noise in a fractional-n frequency synthesizer22 Jun 2023US 2023/0198547 A1University College Dublin
- Methods and apparatus for low jitter fractional output dividers17 Nov 2022US 2022/0365489 A1Texas Instruments Incorporated
- Phase coherent frequency synthesis1 Sep 2022US 2022/0278687 A1BAE Systems Information and Electronic Systems Integration Inc.
Most cited
By later US patents
- Variable-order delta sigma modulator and DA converter62US 7,129,873 B2Rohm Co., Ltd. · 2006
- Nyquist response restoring delta-sigma modulator based analog to digital and digital to analog conversion59US 6,373,418 B1Rockwell Collins, Inc. · 2002
- .SIGMA.-.DELTA. modulator-controlled phase-locked-loop circuit52US 5,986,512 ATelefonaktiebolaget'l M Ericsson (Publ) · 1999
- Analogue-to-digital converters, digital-to-analogue converters, and digital modulators50US 5,341,135 AGEC-Marconi Limited · 1994
- Oversampling converter47US 4,704,600 ANippon Telegraph and Telephone Corporation · 1987