H03M 13/41
Using the viterbi algorithm or viterbi processors
Official title: using the Viterbi algorithm or Viterbi processors
H03M13/41 (Using the viterbi algorithm or viterbi processors) appears on 1,594 US grants and 1,075 published applications in this corpus.
Search patents in H03M- Granted patents
- 1,594
- Published applications
- 1,075
- Assignees
- 438
- Inventors
- 2,155
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 7 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 14 | 0 |
| 1993 | 12 | 0 |
| 1994 | 20 | 0 |
| 1995 | 35 | 0 |
| 1996 | 36 | 0 |
| 1997 | 18 | 0 |
| 1998 | 36 | 0 |
| 1999 | 59 | 0 |
| 2000 | 57 | 0 |
| 2001 | 62 | 24 |
| 2002 | 58 | 70 |
| 2003 | 56 | 76 |
| 2004 | 57 | 72 |
| 2005 | 48 | 72 |
| 2006 | 85 | 75 |
| 2007 | 71 | 70 |
| 2008 | 63 | 65 |
| 2009 | 62 | 83 |
| 2010 | 77 | 62 |
| 2011 | 73 | 54 |
| 2012 | 105 | 44 |
| 2013 | 98 | 62 |
| 2014 | 89 | 49 |
| 2015 | 67 | 28 |
| 2016 | 42 | 17 |
| 2017 | 12 | 21 |
| 2018 | 20 | 29 |
| 2019 | 38 | 24 |
| 2020 | 28 | 20 |
| 2021 | 17 | 17 |
| 2022 | 20 | 10 |
| 2023 | 9 | 8 |
| 2024 | 10 | 7 |
| 2025 | 5 | 8 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03M 13/4107Implementing add, compare, select [acs] operations379
- H03M 13/4161Implementing path management359
- H03M 13/4138Soft-output viterbi algorithm based decoding, i.e. viterbi decoding with weighted decisions280
- H03M 13/413Tail biting viterbi decoding103
- H03M 13/4115List output viterbi decoding59
- H03M 13/4123Implementing the return to a predetermined state58
Recent patents
- Ultra-wideband method and apparatus6 Oct 2026US 12,756,423 B2DecaWave, Ltd.
- State reduction for sequence estimation based on signal quality29 Sep 2026US 12,750,162 B2QUALCOMM Incorporated
- Receiver for adjusting log likelihood ratio and method of operating the same8 Sep 2026US 12,732,212 B2Samsung Electronics Co., Ltd.
- Error correction for identifier data generated from unclonable characteristics of resistive memory12 May 2026US 12,626,759 B1Crossbar, Inc.
- Soft information generation for concatenated forward error correction in digiral signal processing31 Mar 2026US 12,592,722 B2Avago Technologies International Sales Pte. Limited
- Integrated kalman filter-based phase-locked loop and viterbi equalizer27 Aug 2026US 2026/0254607 A1Silicon Laboratories Inc.
- Soft information generation for concatenated forward error correction in digital signal processing23 Jul 2026US 2026/0213774 A1Avago Technologies International Sales Pte. Limited
- State reduction for sequence estimation18 Jun 2026US 2026/0172143 A1QUALCOMM Incorporated
- State reduction for sequence estimation based on signal quality18 Jun 2026US 2026/0172144 A1QUALCOMM Incorporated
- Kalman filter based phase-locked loop with re-encoding based phase detector16 Apr 2026US 2026/0106782 A1Silicon Laboratories Inc.
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
- Apparatus and method for digital data transmission using orthogonal codes473US 6,356,555 B1Terayon Communications Systems, Inc. · 2002
- Apparatus and method for equalization in distributed digital data transmission systems321US 6,665,308 B1Terayon Communication Systems, Inc. · 2003
- Generalized viterbi decoding algorithms285US 5,208,816 AAT&T Bell Laboratories · 1993
- Multirate serial viterbi decoder for code division multiple access system applications256US 5,710,784 AQUALCOMM Incorporated · 1998