H04N 21/26609
Using retrofitting techniques
Official title: {using retrofitting techniques, e.g. by re-encrypting the control words used for pre-encryption}
H04N21/26609 (Using retrofitting techniques) appears on 37 US grants and 49 published applications in this corpus.
Search patents in H04N- Granted patents
- 37
- Published applications
- 49
- Assignees
- 33
- Inventors
- 88
- Latest grant
- 10 Oct 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 0 | 1 |
| 2002 | 1 | 8 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 2 | 8 |
| 2006 | 5 | 1 |
| 2007 | 3 | 6 |
| 2008 | 0 | 2 |
| 2009 | 1 | 3 |
| 2010 | 1 | 5 |
| 2011 | 1 | 3 |
| 2012 | 5 | 1 |
| 2013 | 4 | 2 |
| 2014 | 2 | 3 |
| 2015 | 6 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
By publication year.
Recent patents
- Protected client inventory redeployment10 Oct 2023US 11,785,274 B2ARRIS Enterprises LLC
- Apparatus and method for processing conditional access system-based content21 Jun 2022US 11,368,755 B2Samsung Electronics Co., Ltd.
- Conditional access method and system for intelligent operating system11 Jun 2019US 10,321,181 B2Academy of Broadcasting Science, State Administration of Press, Publication, Radio, Film & Television
- Method and multimedia unit for processing a digital broadcast transport stream2 Oct 2018US 10,091,537 B2Nagravision S. A.
- System and method for dynamically allocating stream identifiers in a multi-encryption transport system13 Sep 2016US 9,444,799 B2Cisco Technology, Inc.
- Apparatus and method for processing conditional access system-based content22 Jul 2021US 2021/0227295 A1Samsung Electronics Co., Ltd.
- Protected client inventory redeployment8 Oct 2020US 2020/0322668 A1ARRIS Enterprises LLC
- Conditional access method and system for intelligent operating system6 Dec 2018US 2018/0352281 A1Academy of Broadcasting Science, State Administration of Press, Publication, Radio, Film
- System and Method for Dynamically Allocating Stream Identifiers in a Multi-Encryption Transport System9 Jul 2015US 2015/0195260 A1Cisco Technology, Inc.
- Method and multimedia unit for processing a digital broadcast transport stream9 Oct 2014US 2014/0304728 A1Nagravision S.A.
Most cited
By later US patents
- Selective and renewable encryption for secure distribution of video on-demand398US 6,415,031 B1DIVA Systems Corporation · 2002
- Data multiplexing device, program distribution system, program transmission system, pay broadcast system, program transmission method, conditional access system, and data reception device103US 6,970,564 B1Sony Corporation · 2005
- Transitioning to secure IP communications for encoding, encapsulating, and encrypting data94US 7,817,608 B2Widevine Technologies, Inc. · 2010
- System for denying access to content generated by a compromised off line encryption device and for conveying cryptographic keys from multiple conditional access systems65US 7,257,227 B2General Instrument Corporation · 2007
- Transmitter, receiver, and transmitting method33US 9,112,835 B2Kabushiki Kaisha Toshiba · 2015