H04N 21/4408
Involving video stream encryption
Official title: involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
H04N21/4408 (Involving video stream encryption) appears on 720 US grants and 911 published applications in this corpus.
Search patents in H04N- Granted patents
- 720
- Published applications
- 911
- Assignees
- 302
- Inventors
- 1,369
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 3 |
| 2002 | 9 | 34 |
| 2003 | 2 | 39 |
| 2004 | 13 | 42 |
| 2005 | 17 | 54 |
| 2006 | 27 | 61 |
| 2007 | 24 | 57 |
| 2008 | 24 | 69 |
| 2009 | 29 | 54 |
| 2010 | 41 | 33 |
| 2011 | 27 | 27 |
| 2012 | 33 | 31 |
| 2013 | 40 | 41 |
| 2014 | 49 | 54 |
| 2015 | 66 | 46 |
| 2016 | 52 | 73 |
| 2017 | 48 | 40 |
| 2018 | 38 | 30 |
| 2019 | 47 | 33 |
| 2020 | 19 | 27 |
| 2021 | 25 | 22 |
| 2022 | 26 | 14 |
| 2023 | 18 | 11 |
| 2024 | 13 | 7 |
| 2025 | 3 | 5 |
| 2026 | 7 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Verifying the rendering of video content at client devices using trusted platform modules23 Jun 2026US 12,666,117 B2Google Inc.
- Method to preserve video data obfuscation for video frames2 Jun 2026US 12,647,643 B2ARRIS Enterprises LLC
- Delegation within end to end encryption5 May 2026US 12,621,522 B2Verkada Inc.
- Smart card interface, data transmission method and television chip21 Apr 2026US 12,610,102 B2Beijing ESWIN Computing Technology Co., Ltd.
- Techniques for secure video frame management14 Apr 2026US 12,604,049 B2Apple Inc.
- Delegation within end to end encryption3 Sep 2026US 2026/0261731 A1Verkada Inc.
- Video security for multiple displays2 Jul 2026US 2026/0189754 A1Advanced Micro Devices, Inc.
- Systems and methods for dynamic cross-profile management and offline media caching in streaming services11 Jun 2026US 2026/0164069 A1
- Delegation within end to end encryption5 Mar 2026US 2026/0067534 A1Verkada Inc.
- Video transmission apparatus, video reception apparatus, video transmission method, video reception method, and storage medium4 Dec 2025US 2025/0373443 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Method and system for generating a smart time-lapse video clip290US 9,170,707 B1Google Inc. · 2015
- Apparatus and method for receiving and decrypting encrypted data and protecting decrypted data from illegal use239US 6,061,451 ADigital Vision Laboratories Corporation · 2000
- Wireless extension for cable television signals236US 7,151,575 B1Entropic Communications, Inc. · 2006
- Apparatus, method and computer program product for protecting copyright data within a computer system220US 6,236,727 B1International Business Machines Corporation · 2001
- Method and apparatus for providing content-owner control in a networked device200US 7,392,481 B2Sonic Solutions, a California corporation · 2008