H04L 25/4921
Using quadrature encoding
Official title: {using quadrature encoding, e.g. carrierless amplitude-phase coding}
H04L25/4921 (Using quadrature encoding) appears on 87 US grants and 49 published applications in this corpus.
Search patents in H04L- Granted patents
- 87
- Published applications
- 49
- Assignees
- 49
- Inventors
- 119
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 7 | 0 |
| 1999 | 10 | 0 |
| 2000 | 8 | 0 |
| 2001 | 4 | 3 |
| 2002 | 2 | 3 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 2 | 2 |
| 2006 | 5 | 0 |
| 2007 | 1 | 2 |
| 2008 | 1 | 0 |
| 2009 | 1 | 2 |
| 2010 | 3 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 2 | 1 |
| 2016 | 2 | 3 |
| 2017 | 2 | 1 |
| 2018 | 2 | 1 |
| 2019 | 5 | 10 |
| 2020 | 9 | 6 |
| 2021 | 3 | 2 |
| 2022 | 4 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
| 2025 | 4 | 5 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Phase management circuit for high-speed ADC receivers and methods thereof6 Oct 2026US 12,756,603 B2Samsung Electronics Co., Ltd.
- System and method for multiple supply IQ sharing in digital to analog signal conversion9 Jun 2026US 12,652,204 B2Instituto de Pesquisas Eldorado
- Frequency modulation in a communications network9 Sep 2025US 12,413,458 B2Hughes Network Systems, LLC
- Systems and methods for supporting both pulse amplitude modulation and quadrature amplitude modulation10 Jun 2025US 12,328,219 B2Altera Corporation
- Multi-level signaling in memory with wide system interface25 Feb 2025US 12,237,953 B2Micron Technology, Inc.
- System And Method for Multiple Supply IQ Sharing in Digital to Analog Signal Conversion30 Apr 2026US 2026/0121895 A1Instituto de Pesquisas Eldorado
- Phase management circuit for high-speed adc receivers and methods thereof2 Apr 2026US 2026/0095353 A1Samsung Electronics Co., Ltd.
- Systems and Methods for Supporting Both Pulse Amplitude Modulation and Quadrature Amplitude Modulation2 Oct 2025US 2025/0310173 A1Altera Corporation
- Multi-level signaling in memory with wide system interface24 Jul 2025US 2025/0240192 A1Micron Technology, Inc.
- Method of correcting errors in an iq signal generator system17 Jul 2025US 2025/0233782 A1
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- MDSL host interface requirement specification206US 5,910,970 ATexas Instruments Incorporated · 1999