H04N 21/23
Processing of content or additional data
Official title: Processing of content or additional data; Elementary server operations; Server middleware
H04N21/23 (Processing of content or additional data) appears on 33,771 US grants and 39,717 published applications in this corpus.
Search patents in H04N- Granted patents
- 33,771
- Published applications
- 39,717
- Assignees
- 5,560
- Inventors
- 43,881
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 8 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 13 | 0 |
| 1990 | 15 | 0 |
| 1991 | 14 | 0 |
| 1992 | 30 | 0 |
| 1993 | 47 | 0 |
| 1994 | 51 | 0 |
| 1995 | 74 | 0 |
| 1996 | 156 | 0 |
| 1997 | 143 | 0 |
| 1998 | 272 | 0 |
| 1999 | 305 | 0 |
| 2000 | 304 | 0 |
| 2001 | 341 | 283 |
| 2002 | 338 | 1003 |
| 2003 | 366 | 919 |
| 2004 | 423 | 1042 |
| 2005 | 371 | 1115 |
| 2006 | 612 | 1236 |
| 2007 | 501 | 1379 |
| 2008 | 557 | 1470 |
| 2009 | 672 | 1659 |
| 2010 | 981 | 1569 |
| 2011 | 1076 | 1429 |
| 2012 | 1316 | 1483 |
| 2013 | 1446 | 1673 |
| 2014 | 2030 | 2209 |
| 2015 | 1959 | 2060 |
| 2016 | 1921 | 2051 |
| 2017 | 1928 | 2044 |
| 2018 | 1772 | 1924 |
| 2019 | 1998 | 1947 |
| 2020 | 2175 | 2050 |
| 2021 | 2006 | 1991 |
| 2022 | 1869 | 1865 |
| 2023 | 1775 | 1736 |
| 2024 | 1643 | 1527 |
| 2025 | 1458 | 1272 |
| 2026 | 780 | 781 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04N 21/234Processing of video elementary streams16,665
- H04N 21/236Assembling of a multiplex stream7,592
- H04N 21/238Interfacing the downstream path of the transmission network7,479
- H04N 21/235Processing of additional data6,521
- H04N 21/24Monitoring of processes or resources5,428
- H04N 21/231Content storage operation2,961
- H04N 21/239Interfacing the upstream path of the transmission network2,283
- H04N 21/242Synchronisation processes2,091
Recent patents
- System and method for streaming session data management6 Oct 2026US 12,754,850 B2DISH Network Technologies India Private Limited
- Updating media devices in a local network with a client-server architecture6 Oct 2026US 12,756,624 B2DISH Network L.L.C.
- 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
- Gameplay video system and method8 Oct 2026US 2026/0306942 A1Sony Interactive Entertainment Inc.
- Fine-grained segmentation of content items for tiered cloud archival using machine-learned models8 Oct 2026US 2026/0310721 A1Charter Communications Operating, LLC
- Method, system, and apparatus for updating statistical databases based on sensed movement data8 Oct 2026US 2026/0311567 A1AdrenalineIP
- Monitoring streaming media content8 Oct 2026US 2026/0312894 A1The Nielsen Company (US), LLC
- Techniques for detecting reference frame mismatches in encoded video streams8 Oct 2026US 2026/0313165 A1Netflix, 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
- System for generation of user profiles for a system for customized electronic identification of desirable objects2,365US 5,754,939 A1998
- Synchronous network for digital media streams2,236US 6,611,537 B1Centillium Communications, Inc. · 2003
- 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
- System for customized electronic identification of desirable objects1,946US 6,029,195 A2000