H04N 21/44055
By partially decrypting
Official title: {by partially decrypting, e.g. decrypting a video stream that has been partially encrypted}
H04N21/44055 (By partially decrypting) appears on 234 US grants and 289 published applications in this corpus.
Search patents in H04N- Granted patents
- 234
- Published applications
- 289
- Assignees
- 126
- Inventors
- 431
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 8 |
| 2003 | 1 | 18 |
| 2004 | 2 | 26 |
| 2005 | 8 | 29 |
| 2006 | 17 | 20 |
| 2007 | 10 | 23 |
| 2008 | 10 | 18 |
| 2009 | 18 | 19 |
| 2010 | 16 | 12 |
| 2011 | 12 | 14 |
| 2012 | 22 | 9 |
| 2013 | 19 | 9 |
| 2014 | 16 | 15 |
| 2015 | 13 | 6 |
| 2016 | 12 | 14 |
| 2017 | 9 | 13 |
| 2018 | 7 | 6 |
| 2019 | 9 | 6 |
| 2020 | 8 | 9 |
| 2021 | 5 | 3 |
| 2022 | 4 | 3 |
| 2023 | 5 | 3 |
| 2024 | 3 | 2 |
| 2025 | 3 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Secure decoder and secure decoding methods19 May 2026US 12,634,532 B2V-Nova International Limited
- Selective video modification16 Dec 2025US 12,501,106 B2Pimloc Limited
- Systems and methods for protecting elementary bitstreams incorporating independently encoded tiles29 Jul 2025US 12,375,739 B2Divx, LLC
- Secure satellite-based content preloading1 Jul 2025US 12,348,833 B2Hughes Network Systems, LLC
- Efficient media stream encryption providing full content protection26 Nov 2024US 12,155,886 B2DISH Network Technologies India Private Limited
- 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
- Efficient media stream encryption providing full content protection30 Jan 2025US 2025/0039492 A1DISH Network Technologies India Private Limited
- Systems and Methods for Protecting Elementary Bitstreams Incorporating Independently Encoded Tiles31 Oct 2024US 2024/0364948 A1Divx, LLC
- Secure decoder and secure decoding methods12 Sep 2024US 2024/0305839 A1V-Nova International Limited
Most cited
By later US patents
- System, method, and apparatus for securely providing content viewable on a secure device221US 7,007,170 B2Widevine Technologies, Inc. · 2006
- Content distribution for multiple digital rights management176US 7,120,250 B2Sony Corporation · 2006
- Selective encryption to enable multiple decryption keys168US 7,233,669 B2Sony Corporation · 2007
- Elementary stream partial encryption165US 7,124,303 B2Sony Corporation · 2006
- Apparatus for scrambling a digital video signal148US 5,600,721 ASony Corporation · 1997