H04N 21/43
Processing of content or additional data
Official title: Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware {(real-time communication protocols in data switching networks H04L65/00)}
H04N21/43 (Processing of content or additional data) appears on 55,638 US grants and 70,763 published applications in this corpus.
Search patents in H04N- Granted patents
- 55,638
- Published applications
- 70,763
- Assignees
- 7,414
- Inventors
- 71,747
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 16 | 0 |
| 1987 | 10 | 0 |
| 1988 | 12 | 0 |
| 1989 | 23 | 0 |
| 1990 | 29 | 0 |
| 1991 | 33 | 0 |
| 1992 | 49 | 0 |
| 1993 | 66 | 0 |
| 1994 | 70 | 0 |
| 1995 | 127 | 0 |
| 1996 | 241 | 0 |
| 1997 | 245 | 0 |
| 1998 | 424 | 0 |
| 1999 | 469 | 0 |
| 2000 | 494 | 0 |
| 2001 | 590 | 448 |
| 2002 | 572 | 1936 |
| 2003 | 617 | 1846 |
| 2004 | 738 | 2012 |
| 2005 | 638 | 2350 |
| 2006 | 1073 | 2717 |
| 2007 | 924 | 3157 |
| 2008 | 1001 | 3221 |
| 2009 | 1365 | 3352 |
| 2010 | 1873 | 3327 |
| 2011 | 2110 | 3062 |
| 2012 | 2624 | 2840 |
| 2013 | 2836 | 3242 |
| 2014 | 3718 | 3821 |
| 2015 | 3363 | 3614 |
| 2016 | 3079 | 3324 |
| 2017 | 3091 | 3275 |
| 2018 | 2813 | 2942 |
| 2019 | 2992 | 2849 |
| 2020 | 3081 | 2955 |
| 2021 | 2833 | 2859 |
| 2022 | 2669 | 2795 |
| 2023 | 2614 | 2676 |
| 2024 | 2522 | 2617 |
| 2025 | 2283 | 2132 |
| 2026 | 1286 | 1394 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04N 21/44Processing of video elementary streams15,322
- H04N 21/442Monitoring of processes or resources13,943
- H04N 21/431Generation of visual interfaces for content selection or interaction11,284
- H04N 21/436Interfacing a local distribution network10,254
- H04N 21/433Content storage operation8,301
- H04N 21/434Disassembling of a multiplex stream7,984
- H04N 21/435Processing of additional data6,277
- H04N 21/438Interfacing the downstream path of the transmission network originating from a server5,945
All 14 subgroupsShow fewer
- H04N 21/4302Content synchronisation processes5,906
- H04N 21/443Os processes4,417
- H04N 21/439Processing of audio elementary streams4,262
- H04N 21/432Content retrieval operation from a local storage medium3,067
- H04N 21/441Acquiring end-user identification1,156
- H04N 21/437Interfacing the upstream path of the transmission network858
Recent patents
- Audio-visual navigation and communication dynamic memory architectures6 Oct 2026US 12,754,651 B2Aq Media, Inc.
- Interface circuit and display device6 Oct 2026US 12,754,701 B2Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- System and method for streaming session data management6 Oct 2026US 12,754,850 B2DISH Network Technologies India Private Limited
- Picture content enhancement method and system, and electronic device6 Oct 2026US 12,755,460 B1Uc Global Trade Inc.
- Systems and methods for identifying content corresponding to a language spoken in a household6 Oct 2026US 12,755,729 B2Adeia Guides Inc.
- Methods and apparatus to determine a conditional probability based on audience member probability distributions for media audience measurement8 Oct 2026US 2026/0311010 A1The Nielsen Company (US), LLC
- Prompt content display method, electronic device and storage medium8 Oct 2026US 2026/0311239 A1Beijing Youzhuju Network Technology Co., Ltd.
- Adaptive comprehension enhancement system8 Oct 2026US 2026/0311511 A1inFormed Consent LLC
- Method, system, and apparatus for updating statistical databases based on sensed movement data8 Oct 2026US 2026/0311567 A1AdrenalineIP
- Techniques for dynamic resolutions8 Oct 2026US 2026/0313007 A1QUALCOMM Incorporated
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
- Systems and methods for displaying and recording control interface with television programs, video, advertising information and program scheduling information2,572US 6,177,931 B1Index Systems, Inc. · 2001
- 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