H04N 21/23892
Involving embedding information at multiplex stream level
Official title: {involving embedding information at multiplex stream level, e.g. embedding a watermark at packet level}
H04N21/23892 (Involving embedding information at multiplex stream level) appears on 930 US grants and 865 published applications in this corpus.
Search patents in H04N- Granted patents
- 930
- Published applications
- 865
- Assignees
- 242
- Inventors
- 994
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 11 | 0 |
| 2000 | 13 | 0 |
| 2001 | 29 | 21 |
| 2002 | 18 | 55 |
| 2003 | 35 | 41 |
| 2004 | 40 | 31 |
| 2005 | 19 | 28 |
| 2006 | 35 | 36 |
| 2007 | 20 | 33 |
| 2008 | 30 | 45 |
| 2009 | 21 | 39 |
| 2010 | 58 | 43 |
| 2011 | 52 | 59 |
| 2012 | 47 | 29 |
| 2013 | 46 | 27 |
| 2014 | 44 | 35 |
| 2015 | 38 | 39 |
| 2016 | 37 | 26 |
| 2017 | 32 | 32 |
| 2018 | 25 | 36 |
| 2019 | 36 | 23 |
| 2020 | 36 | 48 |
| 2021 | 52 | 39 |
| 2022 | 35 | 24 |
| 2023 | 43 | 32 |
| 2024 | 27 | 22 |
| 2025 | 22 | 13 |
| 2026 | 9 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Use of steganographically-encoded time information as basis to control implementation of dynamic content modification22 Sep 2026US 12,744,963 B2The Nielsen Company (US), LLC
- Synchronized interleaved watermarking25 Aug 2026US 12,720,133 B2Synamedia Limited
- NSCT-UPEMD-PHT based robust zero-watermarking algorithm and system28 Jul 2026US 12,694,077 B1Qiqihar University
- Methods and apparatus for affiliate interrupt detection9 Jun 2026US 12,652,425 B2The Nielsen Company (US), LLC
- Systems and methods for determining whether to update embedded advertisements in downloaded content using advertisement update criteria2 Jun 2026US 12,647,634 B2Adeia Guides Inc.
- Use of Steganographically-Encoded Time Information as Basis to Control Implementation of Dynamic Content Modification1 Oct 2026US 2026/0303902 A1The Nielsen Company (US), LLC
- Distributed storage of content across storage subsystems24 Sep 2026US 2026/0292279 A1Comcast Cable Communications, LLC
- Methods and apparatus for affiliate interrupt detection17 Sep 2026US 2026/0281477 A1The Nielsen Company (US), LLC
- System for steganalysis detection of metadata in a video stream for providing real-time data16 Jul 2026US 2026/0203381 A1Bank of America Corporation
- Use of Steganographically-Encoded Time Information as Basis to Establish a Time Offset, to Facilitate Taking Content-Related Action25 Jun 2026US 2026/0181196 A1The Nielsen Company (US), LLC
Most cited
By later US patents
- Computer system linked by using information in data objects1,131US 6,122,403 ADigimarc Corporation · 2000
- Watermark embedder and reader942US 6,614,914 B1Digimarc Corporation · 2003
- Connected audio and other media objects859US 6,505,160 B1Digimarc Corporation · 2003
- Steganographic method and device844US 5,613,004 ADice Corporation · 1997
- Signal processing apparatus and methods832US 4,694,490 A1987