H04N 21/4302
Content synchronisation processes
Official title: {Content synchronisation processes, e.g. decoder synchronisation}
H04N21/4302 (Content synchronisation processes) appears on 5,906 US grants and 6,545 published applications in this corpus.
Search patents in H04N- Granted patents
- 5,906
- Published applications
- 6,545
- Assignees
- 1,563
- Inventors
- 10,173
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 10 | 0 |
| 1995 | 20 | 0 |
| 1996 | 48 | 0 |
| 1997 | 60 | 0 |
| 1998 | 68 | 0 |
| 1999 | 68 | 0 |
| 2000 | 66 | 0 |
| 2001 | 82 | 40 |
| 2002 | 68 | 140 |
| 2003 | 81 | 145 |
| 2004 | 78 | 171 |
| 2005 | 72 | 181 |
| 2006 | 116 | 219 |
| 2007 | 90 | 215 |
| 2008 | 99 | 260 |
| 2009 | 130 | 231 |
| 2010 | 159 | 200 |
| 2011 | 179 | 214 |
| 2012 | 244 | 228 |
| 2013 | 241 | 311 |
| 2014 | 340 | 405 |
| 2015 | 300 | 360 |
| 2016 | 271 | 325 |
| 2017 | 358 | 333 |
| 2018 | 306 | 335 |
| 2019 | 347 | 306 |
| 2020 | 365 | 327 |
| 2021 | 324 | 345 |
| 2022 | 315 | 313 |
| 2023 | 299 | 294 |
| 2024 | 272 | 286 |
| 2025 | 267 | 205 |
| 2026 | 135 | 156 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Providing augmented reality in association with live events6 Oct 2026US 12,756,884 B2Snap Inc.
- Transmitting method, receiving method, transmitting apparatus, and receiving apparatus6 Oct 2026US 12,756,885 B2Panasonic Intellectual Property Corporation of America
- Playback of synthetic media content via multiple devices6 Oct 2026US 12,756,886 B2Sonos, Inc.
- Transmission apparatus, transmission method, reception apparatus, and reception method29 Sep 2026US 12,750,174 B2Sony Corporation
- Multi-screen video display method and system, and playing end and storage medium29 Sep 2026US 12,750,547 B2Boe Technology Group Co., Ltd.
- Video stream synchronization method and apparatus, platform, and storage medium8 Oct 2026US 2026/0313185 A1Zhejiang Uniview Technologies Co., Ltd.
- Failure Recovery of Wearable Playback Device8 Oct 2026US 2026/0313313 A1Sonos, Inc.
- Realtime wireless synchronization of live event audio stream with a video recording8 Oct 2026US 2026/0314022 A1Bygge Technologies Inc.
- Immersive audio in a media playback system1 Oct 2026US 2026/0303676 A1Sonos, Inc.
- Display device and content sharing method for sharing content with external display device1 Oct 2026US 2026/0303896 A1LG Electronics Inc.
Most cited
By later US patents
- System and method for synchronizing operations among a plurality of independently clocked digital data processing devices1,949US 8,234,395 B2Sonos, Inc. · 2012
- Multimedia wired/wireless content synchronization system and method1,810US 6,631,410 B1Sharp Laboratories of America, Inc. · 2003
- Multimedia time warping system1,079US 6,233,389 B1TiVo Inc. · 2001
- Signal processing appparatus and methods797US 5,335,277 AThe Personalized Mass Media Corporation · 1994
- Audio program player including a dynamic program selection controller776US 6,199,076 B12001