H04N 21/235
Processing of additional data
Official title: Processing of additional data, e.g. scrambling of additional data or processing content descriptors
H04N21/235 (Processing of additional data) appears on 6,521 US grants and 7,819 published applications in this corpus.
Search patents in H04N- Granted patents
- 6,521
- Published applications
- 7,819
- Assignees
- 1,383
- Inventors
- 8,972
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 14 | 0 |
| 1997 | 21 | 0 |
| 1998 | 32 | 0 |
| 1999 | 53 | 0 |
| 2000 | 38 | 0 |
| 2001 | 74 | 57 |
| 2002 | 71 | 272 |
| 2003 | 74 | 234 |
| 2004 | 99 | 294 |
| 2005 | 98 | 266 |
| 2006 | 159 | 325 |
| 2007 | 137 | 369 |
| 2008 | 127 | 422 |
| 2009 | 172 | 389 |
| 2010 | 298 | 431 |
| 2011 | 311 | 346 |
| 2012 | 298 | 251 |
| 2013 | 338 | 308 |
| 2014 | 481 | 454 |
| 2015 | 464 | 435 |
| 2016 | 369 | 367 |
| 2017 | 320 | 361 |
| 2018 | 310 | 332 |
| 2019 | 340 | 336 |
| 2020 | 350 | 310 |
| 2021 | 335 | 285 |
| 2022 | 299 | 268 |
| 2023 | 251 | 231 |
| 2024 | 256 | 212 |
| 2025 | 210 | 161 |
| 2026 | 104 | 103 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tune media player for broadcast and broadband services6 Oct 2026US 12,756,879 B2Sony Group Corporation
- Reception apparatus, reception method, transmission apparatus, and transmission method6 Oct 2026US 12,756,907 B2Saturn Licensing LLC
- Managing encryption keys for content29 Sep 2026US 12,750,208 B2Comcast Cable Communications, LLC
- Scalable systems for controlling color management comprising varying levels of metadata29 Sep 2026US 12,750,508 B2
- Systems, methods, and apparatuses for improved content recording and playback22 Sep 2026US 12,744,947 B2Comcast Cable Communications, LLC
- Gameplay video system and method8 Oct 2026US 2026/0306942 A1Sony Interactive Entertainment Inc.
- Monitoring streaming media content8 Oct 2026US 2026/0312894 A1The Nielsen Company (US), LLC
- Methods, systems, and apparatuses for improved transmission of content8 Oct 2026US 2026/0313178 A1Comcast Cable Communications, LLC
- Information processing method and apparatus, device, and storage medium1 Oct 2026US 2026/0303923 A1Beijing Zitiao Network Technology Co., Ltd.
- Scalable systems for controlling color management comprising varying levels of metadata24 Sep 2026US 2026/0292223 A1Dolby Laboratories Licensing Corporation
Most cited
By later US patents
- Systems and methods for secure transaction management and electronic rights protection1,270US 5,982,891 AIntertrust Technologies Corporation · 1999
- Network controller for cable television delivery systems1,167US 5,600,364 ADiscovery Communications, Inc. · 1997
- Systems and methods for secure transaction management and electronic rights protection1,156US 5,910,987 AIntertrust Technologies Corporation · 1999
- System and process for VCR scheduling1,066US 4,977,455 AInsight Telecast, Inc. · 1990
- Terminal for suggesting programs offered on a television program delivery system1,065US 5,798,785 ADiscovery Communications, Inc. · 1998