H04N 21/44
Processing of video elementary streams
Official title: Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
H04N21/44 (Processing of video elementary streams) appears on 15,322 US grants and 19,161 published applications in this corpus.
Search patents in H04N- Granted patents
- 15,322
- Published applications
- 19,161
- Assignees
- 3,005
- Inventors
- 24,926
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 0 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 11 | 0 |
| 1992 | 10 | 0 |
| 1993 | 8 | 0 |
| 1994 | 9 | 0 |
| 1995 | 18 | 0 |
| 1996 | 34 | 0 |
| 1997 | 55 | 0 |
| 1998 | 98 | 0 |
| 1999 | 99 | 0 |
| 2000 | 108 | 0 |
| 2001 | 122 | 107 |
| 2002 | 151 | 394 |
| 2003 | 157 | 504 |
| 2004 | 210 | 562 |
| 2005 | 179 | 663 |
| 2006 | 312 | 765 |
| 2007 | 262 | 856 |
| 2008 | 286 | 882 |
| 2009 | 372 | 864 |
| 2010 | 508 | 819 |
| 2011 | 519 | 727 |
| 2012 | 724 | 693 |
| 2013 | 756 | 778 |
| 2014 | 944 | 920 |
| 2015 | 881 | 913 |
| 2016 | 785 | 844 |
| 2017 | 821 | 922 |
| 2018 | 761 | 843 |
| 2019 | 845 | 827 |
| 2020 | 896 | 934 |
| 2021 | 886 | 918 |
| 2022 | 853 | 847 |
| 2023 | 826 | 819 |
| 2024 | 749 | 717 |
| 2025 | 672 | 622 |
| 2026 | 374 | 421 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04N 21/4402Involving reformatting operations of video signals for household redistribution, storage or real-time5,048
- H04N 21/44008Involving operations for analysing video streams4,662
- H04N 21/44016Involving splicing one content stream with another content stream2,176
- H04N 21/44004Involving video buffer management2,073
- H04N 21/4405Involving video stream decryption1,811
- H04N 21/4408Involving video stream encryption720
- H04N 21/44012Involving rendering scenes according to scene graphs571
Recent patents
- Syntax and semantics for buffering information to simplify video splicing6 Oct 2026US 12,756,853 B2Microsoft Technology Licensing, LLC
- Syntax and semantics for buffering information to simplify video splicing6 Oct 2026US 12,756,854 B2Microsoft Technology Licensing, LLC
- Syntax and semantics for buffering information to simplify video splicing6 Oct 2026US 12,756,855 B2Microsoft Technology Licensing, LLC
- Data caching method and electronic device6 Oct 2026US 12,756,891 B2Huawei Technologies Co., Ltd.
- Methods and systems for remote rendering6 Oct 2026US 12,756,894 B2signageOS s.r.o.
- Techniques for dynamic resolutions8 Oct 2026US 2026/0313007 A1QUALCOMM Incorporated
- Video stream synchronization method and apparatus, platform, and storage medium8 Oct 2026US 2026/0313185 A1Zhejiang Uniview Technologies Co., Ltd.
- Source device, display device, and operating method of source device8 Oct 2026US 2026/0313191 A1Samsung Electronics Co., Ltd.
- Broadcast receiving apparatus and portable information terminal8 Oct 2026US 2026/0313200 A1Maxell, Ltd.
- Systems and methods for providing a contextual menu with information related to an emergency alert8 Oct 2026US 2026/0313205 A1Adeia Guides Inc.
Most cited
By later US patents
- Systems and methods for secure transaction management and electronic rights protection3,563US 5,892,900 AIntertrust Technologies Corporation · 1999
- Intelligent electronic appliance system and method2,708US 6,850,252 B12005
- Computer system and process for transferring multiple high bandwidth streams of data between multiple storage units and multiple applications in a scalable and reliable manner1,970US 6,374,336 B1Avid Technology, Inc. · 2002
- Techniques for intelligent video ad insertion1,777US 6,698,020 B1WebTV Networks, Inc. · 2004
- Computer system and process for transferring streams of data between multiple storage units and multiple applications in a scalable and reliable manner1,737US 6,449,688 B1Avid Technology, Inc. · 2002