H04N 21/242
Synchronisation processes
Official title: Synchronisation processes, e.g. processing of PCR [Programme Clock References] {(arrangements for synchronising broadcast or distribution via plural systems in broadcast distribution systems H04H20/18)}
H04N21/242 (Synchronisation processes) appears on 2,091 US grants and 2,230 published applications in this corpus.
Search patents in H04N- Granted patents
- 2,091
- Published applications
- 2,230
- Assignees
- 787
- Inventors
- 3,669
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 21 | 0 |
| 1997 | 15 | 0 |
| 1998 | 26 | 0 |
| 1999 | 19 | 0 |
| 2000 | 28 | 0 |
| 2001 | 27 | 6 |
| 2002 | 24 | 55 |
| 2003 | 19 | 35 |
| 2004 | 26 | 41 |
| 2005 | 13 | 49 |
| 2006 | 37 | 57 |
| 2007 | 21 | 63 |
| 2008 | 34 | 66 |
| 2009 | 37 | 79 |
| 2010 | 55 | 82 |
| 2011 | 63 | 86 |
| 2012 | 76 | 85 |
| 2013 | 72 | 103 |
| 2014 | 113 | 112 |
| 2015 | 104 | 127 |
| 2016 | 125 | 171 |
| 2017 | 132 | 104 |
| 2018 | 101 | 126 |
| 2019 | 135 | 122 |
| 2020 | 137 | 128 |
| 2021 | 151 | 132 |
| 2022 | 115 | 115 |
| 2023 | 130 | 97 |
| 2024 | 88 | 92 |
| 2025 | 89 | 67 |
| 2026 | 39 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Transmitting method, receiving method, transmitting apparatus, and receiving apparatus6 Oct 2026US 12,756,885 B2Panasonic Intellectual Property Corporation of America
- Transmission apparatus, transmission method, reception apparatus, and reception method29 Sep 2026US 12,750,174 B2Sony Corporation
- Computer program, method, and server apparatus25 Aug 2026US 12,720,132 B2Gree Holdings, Inc.
- Synchronized interleaved watermarking25 Aug 2026US 12,720,133 B2Synamedia Limited
- Audio processing18 Aug 2026US 12,711,982 B2Nokia Technologies Oy
- Method, system, and apparatus for updating statistical databases based on sensed movement data8 Oct 2026US 2026/0311567 A1AdrenalineIP
- Reporting presentation latency data for media streaming1 Oct 2026US 2026/0303888 A1QUALCOMM Incorporated
- User-defined content streaming24 Sep 2026US 2026/0292280 A1Comcast Cable Communications, LLC
- Systems and methods for extended reality content delivery10 Sep 2026US 2026/0270531 A1
- Systems and methods for preserving consistent picture quality during live streaming of hybrid content27 Aug 2026US 2026/0255031 A1Adeia Guides Inc.
Most cited
By later US patents
- Method and apparatus for multiplexing separately-authored metadata for insertion into a video data stream689US 6,357,042 B22002
- Splicing compressed packetized digital video streams618US 5,917,830 AGeneral Instrument Corporation · 1999
- System and method for simulating two-way connectivity for one way data streams603US 5,818,441 AIntel Corporation · 1998
- Apparatus and method for digital data transmission using orthogonal codes473US 6,356,555 B1Terayon Communications Systems, Inc. · 2002
- User controlled multi-device media-on-demand system439US 7,103,906 B1International Business Machines Corporation · 2006