H04N 21/43856
By partial decryption
Official title: {by partial decryption, e.g. decrypting a multiplex stream that has been partially encrypted}
H04N21/43856 (By partial decryption) appears on 45 US grants and 49 published applications in this corpus.
Search patents in H04N- Granted patents
- 45
- Published applications
- 49
- Assignees
- 24
- Inventors
- 78
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 4 |
| 2003 | 0 | 7 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 6 | 7 |
| 2007 | 2 | 4 |
| 2008 | 3 | 7 |
| 2009 | 4 | 2 |
| 2010 | 9 | 2 |
| 2011 | 3 | 2 |
| 2012 | 1 | 2 |
| 2013 | 0 | 0 |
| 2014 | 3 | 1 |
| 2015 | 2 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 0 | 2 |
| 2019 | 3 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 2 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
| 2026 | 2 | 0 |
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
- Sensor device and encryption method10 Feb 2026US 12,549,334 B2Sony Group Corporation
- Smartphone-based conditional access system29 Jul 2025US 12,375,758 B2Synamedia Limited
- Smartphone-based conditional access system26 Mar 2024US 11,943,502 B2Synamedia Limited
- Smartphone-based conditional access system30 Aug 2022US 11,432,040 B2Synamedia Limited
- Secure enhancement decoding implementation26 Dec 2024US 2024/0430517 A1V-Nova International Limited
- Smartphone-based conditional access system18 May 2023US 2023/0156274 A1Synamedia Limited
- Smartphone-based conditional access system3 Nov 2022US 2022/0353572 A1Synamedia Limited
- Sensor device and encryption method7 Apr 2022US 2022/0109556 A1Sony Group Corporation
- Smartphone-Based Conditional Access System23 Sep 2021US 2021/0297732 A1Synamedia Limited
Most cited
By later US patents
- Elementary stream partial encryption165US 7,124,303 B2Sony Corporation · 2006
- Decoding and decryption of partially encrypted information145US 7,127,619 B2Sony Corporation · 2006
- Critical packet partial encryption141US 7,336,787 B2Sony Corporation · 2008
- Time division partial encryption110US 7,139,398 B2Sony Corporation · 2006
- Communication processing system with multiple data layers for digital television broadcasting81US 6,026,164 AKabushiki Kaisha Toshiba · 2000