H03M 7/40
Conversion to or from variable length codes
Official title: Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
H03M7/40 (Conversion to or from variable length codes) appears on 3,083 US grants and 2,599 published applications in this corpus.
Search patents in H03M- Granted patents
- 3,083
- Published applications
- 2,599
- Assignees
- 855
- Inventors
- 3,947
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 7 | 0 |
| 1980 | 5 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 12 | 0 |
| 1986 | 11 | 0 |
| 1987 | 11 | 0 |
| 1988 | 12 | 0 |
| 1989 | 22 | 0 |
| 1990 | 14 | 0 |
| 1991 | 24 | 0 |
| 1992 | 19 | 0 |
| 1993 | 23 | 0 |
| 1994 | 22 | 0 |
| 1995 | 39 | 0 |
| 1996 | 45 | 0 |
| 1997 | 65 | 0 |
| 1998 | 69 | 0 |
| 1999 | 47 | 0 |
| 2000 | 49 | 0 |
| 2001 | 44 | 19 |
| 2002 | 56 | 52 |
| 2003 | 74 | 83 |
| 2004 | 61 | 66 |
| 2005 | 66 | 79 |
| 2006 | 75 | 90 |
| 2007 | 86 | 74 |
| 2008 | 73 | 98 |
| 2009 | 71 | 83 |
| 2010 | 112 | 98 |
| 2011 | 85 | 86 |
| 2012 | 62 | 112 |
| 2013 | 105 | 104 |
| 2014 | 92 | 85 |
| 2015 | 100 | 79 |
| 2016 | 128 | 108 |
| 2017 | 138 | 105 |
| 2018 | 123 | 172 |
| 2019 | 139 | 121 |
| 2020 | 169 | 144 |
| 2021 | 108 | 124 |
| 2022 | 136 | 126 |
| 2023 | 121 | 157 |
| 2024 | 121 | 114 |
| 2025 | 139 | 159 |
| 2026 | 79 | 61 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Decompression engine for decompressing compressed input data that includes multiple streams of data6 Oct 2026US 12,754,738 B2ATI Technologies ULC
- 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.
- Data compression and storage29 Sep 2026US 12,750,067 B2Imagination Technologies Limited
- Efficient arithmetic coding for multiple composition distribution matcher (MCDM)29 Sep 2026US 12,750,263 B2QUALCOMM Incorproated
- Syntax and semantics for weight update compression of neural networks22 Sep 2026US 12,744,904 B2Nokia Technologies Oy
- Arithmetic Encoders, Arithmetic Decoders, Video Encoder, Video Decoder, Methods for Encoding, Methods for Decoding and Computer Program1 Oct 2026US 2026/0303118 A1Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.
- Variable length encoding for ml matrices1 Oct 2026US 2026/0303119 A1Advanced Micro Devices, Inc.
- 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
- Code table generation device, memory system, and code table generation method17 Sep 2026US 2026/0280582 A1Kioxia Corporation
- Compression device, memory system and compression method10 Sep 2026US 2026/0269841 A1Kioxia Corporation
Most cited
By later US patents
- Message routing system for shared communication media networks352US 5,095,480 A1992
- Data compression, encryption, and in-line transmission system339US 4,386,416 AMostek Corporation · 1983
- Parallel decompression and compression system and method for improving storage density and access speed for non-volatile memory and embedded memory devices304US 6,145,069 AInteractive Silicon, Inc. · 2000
- Method and apparatus for encoding and decoding data281US 5,717,394 ARicoh Company, Ltd. · 1998
- Data compression apparatus and method269US 5,016,009 AStac, Inc. · 1991