H03M 7/3053
Block-companding pcm systems
Official title: {Block-companding PCM systems}
H03M7/3053 (Block-companding pcm systems) appears on 78 US grants and 20 published applications in this corpus.
Search patents in H03M- Granted patents
- 78
- Published applications
- 20
- Assignees
- 55
- Inventors
- 137
- Latest grant
- 15 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 1 | 0 |
| 2004 | 2 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 3 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 1 | 1 |
| 2017 | 3 | 1 |
| 2018 | 1 | 2 |
| 2019 | 3 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 3 |
| 2022 | 1 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
| 2025 | 2 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Sign data hiding of video recording15 Jul 2025US 12,363,276 B2Alibaba Group Holding Limited
- Methods and systems for combined lossless and lossy coding8 Jul 2025US 12,355,947 B1OP Solutions, LLC
- Methods and systems for combined lossless and lossy coding12 Mar 2024US 11,930,163 B2OP Solutions, LLC
- Methods and systems for combined lossless and lossy coding18 Jul 2023US 11,706,410 B2OP Solutions, LLC
- Methods and systems for combined lossless and lossy coding28 Jun 2022US 11,375,183 B2OP Solutions, LLC
- Sign data hiding of video recording30 Oct 2025US 2025/0337888 A1Alibaba Group Holding Limited
- Methods and systems for combined lossless and lossy coding23 Oct 2025US 2025/0330583 A1OP Solutions, LLC
- Methods and systems for combined lossless and lossy coding29 Sep 2022US 2022/0312002 A1OP Solutions, LLC
- Methods and Systems for Combined Lossless and Lossy Coding1 Sep 2022US 2022/0279166 A1OP Solutions, LLC
- Methods and systems for combined lossless and lossy coding14 Oct 2021US 2021/0321087 A1OP Solutions, LLC
Most cited
By later US patents
- Digital encoding process186US 5,579,430 AFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V. · 1996
- Multilevel digital information compression based on lawrence algorithm136US 6,054,943 A2000
- Digital audio companding and error conditioning125US 4,809,274 ACable/Home Communication Corp. · 1989
- Quantization method for image data compression employing context modeling algorithm104US 5,640,159 AInternational Business Machines Corporation · 1997
- Apparatus and method for lossy compression using dynamic domain quantization94US 5,812,071 ANorthern Telecom Limited · 1998