H04N 19/91
Entropy coding
Official title: Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
H04N19/91 (Entropy coding) appears on 4,617 US grants and 4,965 published applications in this corpus.
Search patents in H04N- Granted patents
- 4,617
- Published applications
- 4,965
- Assignees
- 727
- Inventors
- 3,946
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 7 | 0 |
| 1991 | 17 | 0 |
| 1992 | 18 | 0 |
| 1993 | 25 | 0 |
| 1994 | 37 | 0 |
| 1995 | 46 | 0 |
| 1996 | 59 | 0 |
| 1997 | 73 | 0 |
| 1998 | 96 | 0 |
| 1999 | 63 | 0 |
| 2000 | 46 | 0 |
| 2001 | 37 | 24 |
| 2002 | 34 | 41 |
| 2003 | 50 | 53 |
| 2004 | 41 | 69 |
| 2005 | 43 | 97 |
| 2006 | 57 | 92 |
| 2007 | 49 | 84 |
| 2008 | 40 | 77 |
| 2009 | 58 | 94 |
| 2010 | 83 | 84 |
| 2011 | 65 | 69 |
| 2012 | 104 | 140 |
| 2013 | 100 | 207 |
| 2014 | 118 | 222 |
| 2015 | 186 | 329 |
| 2016 | 293 | 315 |
| 2017 | 319 | 251 |
| 2018 | 286 | 275 |
| 2019 | 263 | 265 |
| 2020 | 290 | 300 |
| 2021 | 234 | 270 |
| 2022 | 273 | 318 |
| 2023 | 260 | 294 |
| 2024 | 298 | 392 |
| 2025 | 319 | 352 |
| 2026 | 212 | 251 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Arithmetic encoder for arithmetically encoding and arithmetic decoder for arithmetically decoding a sequence of information values, methods for arithmetically encoding and decoding a sequence of information values and computer program for implementing these methods6 Oct 2026US 12,756,405 B2Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.
- Video encoding and decoding methods and device using same6 Oct 2026US 12,756,828 B2Electronics and Telecommunications Research Institute
- Receiver side prediction of encoding selection data for video encoding6 Oct 2026US 12,756,872 B2QUALCOMM Incorporated
- Method and device for encoding/decoding image, and recording medium storing bit stream29 Sep 2026US 12,750,476 B2Lx Semicon Co., Ltd.
- Image encoding/decoding method and device29 Sep 2026US 12,750,534 B2Electronics and Telecommunications Research Institute
- Entropy Coding Using Pre-Defined, Fixed CDFS8 Oct 2026US 2026/0313125 A1Google Inc.
- Reproducible learning-based point cloud coding1 Oct 2026US 2026/0303858 A1
- Database utilizing spatial probability models for data compression24 Sep 2026US 2026/0289361 A1
- Arithmetic encoder for arithmetically encoding and arithmetic decoder for arithmetically decoding a sequence of information values, methods for arithmetically encoding and decoding a sequence of information values and computer program for implementing these methods24 Sep 2026US 2026/0291518 A1
- Hardware friendly multi reference line selection design24 Sep 2026US 2026/0292128 A1Tencent America LLC
Most cited
By later US patents
- Continuously adaptive digital video compression system and method for a web streamer466US 6,091,777 ACubic Video Technologies, Inc. · 2000
- Adaptive coding and decoding of frames and fields of video387US 5,227,878 AAT&T Bell Laboratories · 1993
- Digital signal encoding and decoding apparatus334US 4,939,515 AGeneral Electric Company · 1990
- An HDTV compression system289US 5,122,875 AGeneral Electric Company · 1992
- System for compression and decompression of video data using discrete cosine transform and coding techniques285US 5,253,078 AC-Cube Microsystems, Inc. · 1993