H03M 13/25
Error detection or forward error correction by signal space coding, i.e. adding
Official title: Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] {(modulation codes H03M13/31)}
H03M13/25 (Error detection or forward error correction by signal space coding, i.e. adding) appears on 2,109 US grants and 2,062 published applications in this corpus.
Search patents in H03M- Granted patents
- 2,109
- Published applications
- 2,062
- Assignees
- 390
- Inventors
- 1,956
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 11 | 0 |
| 1994 | 8 | 0 |
| 1995 | 11 | 0 |
| 1996 | 12 | 0 |
| 1997 | 11 | 0 |
| 1998 | 20 | 0 |
| 1999 | 17 | 0 |
| 2000 | 21 | 0 |
| 2001 | 24 | 12 |
| 2002 | 24 | 42 |
| 2003 | 23 | 34 |
| 2004 | 22 | 48 |
| 2005 | 22 | 53 |
| 2006 | 49 | 34 |
| 2007 | 38 | 60 |
| 2008 | 42 | 34 |
| 2009 | 42 | 67 |
| 2010 | 41 | 65 |
| 2011 | 49 | 46 |
| 2012 | 85 | 47 |
| 2013 | 66 | 60 |
| 2014 | 84 | 73 |
| 2015 | 93 | 127 |
| 2016 | 79 | 212 |
| 2017 | 154 | 131 |
| 2018 | 109 | 103 |
| 2019 | 211 | 225 |
| 2020 | 162 | 164 |
| 2021 | 169 | 116 |
| 2022 | 130 | 83 |
| 2023 | 109 | 64 |
| 2024 | 79 | 53 |
| 2025 | 44 | 65 |
| 2026 | 21 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Transmission method, reception method, transmitter, and receiver29 Sep 2026US 12,750,159 B2Panasonic Intellectual Property Corporation of America
- State reduction for sequence estimation based on signal quality29 Sep 2026US 12,750,162 B2QUALCOMM Incorporated
- Method and apparatus for low density parity check channel coding in wireless communication system1 Sep 2026US 12,726,217 B2Huawei Technologies Co., Ltd.
- Iterative error decoding with early termination of decoding process11 Aug 2026US 12,706,615 B2Micron Technology, Inc.
- Data processing method and data processing apparatus4 Aug 2026US 12,700,949 B2Huawei Technologies Co., Ltd.
- Transmitter and method for transmitting data block in wireless communication system8 Oct 2026US 2026/0312754 A1Electronics and Telecommunications Research Institute
- Low-density parity check (ldpc) decoders using partial syndrome early termination24 Sep 2026US 2026/0291524 A1Avago Technologies International Sales Pte. Limited
- Ldpc code–based communication method and communication apparatus10 Sep 2026US 2026/0269845 A1Huawei Technologies Co., Ltd.
- Analog to pulse width modulation (pwm) circuit3 Sep 2026US 2026/0261267 A1Webasto Charging Systems, Inc.
- Detecting transmissions using geometric transformations in soft bit decoding20 Aug 2026US 2026/0246562 A1Nokia Solutions and Networks Oy
Most cited
By later US patents
- Lower overhead method for data transmission using ATM and SCDMA over hybrid fiber coax cable plant683US 5,991,308 ATerayon Communication Systems, Inc. · 1999
- Hybrid concatenated codes and iterative decoding483US 6,023,783 ACalifornia Institute of Technology · 2000
- Apparatus and method for digital data transmission using orthogonal codes473US 6,356,555 B1Terayon Communications Systems, Inc. · 2002
- Erasure coding and replication in storage clusters406US 8,799,746 B2Caringo, Inc. · 2014
- Apparatus and method for equalization in distributed digital data transmission systems321US 6,665,308 B1Terayon Communication Systems, Inc. · 2003