H04N 21/23476
By partially encrypting
Official title: {by partially encrypting, e.g. encrypting the ending portion of a movie}
H04N21/23476 (By partially encrypting) appears on 432 US grants and 524 published applications in this corpus.
Search patents in H04N- Granted patents
- 432
- Published applications
- 524
- Assignees
- 198
- Inventors
- 687
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 6 |
| 2002 | 8 | 25 |
| 2003 | 8 | 28 |
| 2004 | 5 | 44 |
| 2005 | 14 | 40 |
| 2006 | 25 | 45 |
| 2007 | 20 | 44 |
| 2008 | 23 | 30 |
| 2009 | 22 | 30 |
| 2010 | 25 | 21 |
| 2011 | 24 | 27 |
| 2012 | 36 | 23 |
| 2013 | 38 | 19 |
| 2014 | 26 | 22 |
| 2015 | 26 | 9 |
| 2016 | 13 | 19 |
| 2017 | 13 | 18 |
| 2018 | 10 | 7 |
| 2019 | 16 | 11 |
| 2020 | 8 | 9 |
| 2021 | 10 | 10 |
| 2022 | 7 | 9 |
| 2023 | 7 | 11 |
| 2024 | 11 | 11 |
| 2025 | 7 | 3 |
| 2026 | 7 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Secure enhancement decoding within protected execution environments16 Jun 2026US 12,659,544 B2V-Nova International Limited
- Dynamic clear lead injection26 May 2026US 12,641,304 B1Amazon Technologies, Inc.
- Secure decoder and secure decoding methods19 May 2026US 12,634,532 B2V-Nova International Limited
- Techniques for secure video frame management14 Apr 2026US 12,604,049 B2Apple Inc.
- Sensor device and encryption method10 Feb 2026US 12,549,334 B2Sony Group Corporation
- Efficient common storage of partially encrypted content23 Jul 2026US 2026/0214080 A1Adeia Media Holdings LLC
- Sample-parallel sparse cipher-block chaining (cbcs) encryption4 Jun 2026US 2026/0155954 A1Comcast Cable Communications, LLC
- Systems and methods for managing access to content assets19 Mar 2026US 2026/0082095 A1Comcast Cable Communications, LLC
- Secure satellite-based content preloading11 Sep 2025US 2025/0287072 A1Hughes Network Systems, LLC
- Systems and Methods for Protecting Elementary Bitstreams Incorporating Independently Encoded Tiles22 May 2025US 2025/0168427 A1Divx, LLC
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
- Systems and methods for secure transaction management and electronic rights protection1,156US 5,910,987 AIntertrust Technologies Corporation · 1999
- Trusted and secure techniques, systems and methods for item delivery and execution944US 6,185,683 B2Intertrust Technologies Corporation · 2001
- Systems and methods for the secure transaction management and electronic rights protection933US 6,253,193 B1Intertrust Technologies Corporation · 2001
- Systems and methods for secure transaction management and electronic rights protection868US 6,363,488 B1Intertrust Technologies Corporation · 2002