H04N 21/4405
Involving video stream decryption
Official title: involving video stream decryption
H04N21/4405 (Involving video stream decryption) appears on 1,811 US grants and 2,099 published applications in this corpus.
Search patents in H04N- Granted patents
- 1,811
- Published applications
- 2,099
- Assignees
- 581
- Inventors
- 2,954
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 9 | 0 |
| 1996 | 8 | 0 |
| 1997 | 9 | 0 |
| 1998 | 17 | 0 |
| 1999 | 24 | 0 |
| 2000 | 16 | 0 |
| 2001 | 17 | 19 |
| 2002 | 20 | 65 |
| 2003 | 19 | 90 |
| 2004 | 23 | 131 |
| 2005 | 32 | 128 |
| 2006 | 69 | 153 |
| 2007 | 57 | 177 |
| 2008 | 58 | 158 |
| 2009 | 87 | 129 |
| 2010 | 116 | 114 |
| 2011 | 107 | 81 |
| 2012 | 127 | 90 |
| 2013 | 134 | 90 |
| 2014 | 136 | 108 |
| 2015 | 132 | 86 |
| 2016 | 91 | 87 |
| 2017 | 84 | 83 |
| 2018 | 75 | 54 |
| 2019 | 68 | 55 |
| 2020 | 55 | 52 |
| 2021 | 68 | 41 |
| 2022 | 42 | 31 |
| 2023 | 38 | 27 |
| 2024 | 26 | 19 |
| 2025 | 15 | 19 |
| 2026 | 14 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Media data decryption method and device, computer device, and storage medium8 Sep 2026US 12,730,906 B2Unilumin Group Co., Ltd
- Method for signing an encoded video stream using a plurality of devices, and a corresponding authentication method28 Jul 2026US 12,695,624 B2Axis AB
- Consumer electronic registration, control and support concierge device and method21 Jul 2026US 12,689,691 B2NexStep, Inc.
- Streaming digital rights management protected media content via WebRTC16 Jun 2026US 12,659,532 B1EZDRM, Inc.
- Decoding processing method and apparatus, computer device, and storage medium9 Jun 2026US 12,652,398 B2Tencent Technology (Shenzhen) Company Limited
- Method for signing an encoded video stream using a plurality of devices, and a corresponding authentication method17 Sep 2026US 2026/0280897 A1Axis AB
- Delegation within end to end encryption3 Sep 2026US 2026/0261731 A1Verkada Inc.
- Conditional access system based audience measurement13 Aug 2026US 2026/0238851 A1Nagravision Sarl
- Screen casting method, electronic device, storage medium, and program product16 Jul 2026US 2026/0205652 A1Huawei Technologies Co., Ltd.
- Video security for multiple displays2 Jul 2026US 2026/0189754 A1Advanced Micro Devices, Inc.
Most cited
By later US patents
- Systems and methods for secure transaction management and electronic rights protection3,563US 5,892,900 AIntertrust Technologies Corporation · 1999
- 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
- Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels1,021US 5,943,422 AIntertrust Technologies Corporation · 1999
- Trusted and secure techniques, systems and methods for item delivery and execution944US 6,185,683 B2Intertrust Technologies Corporation · 2001