H04N 21/23895
Involving multiplex stream encryption
Official title: {involving multiplex stream encryption}
H04N21/23895 (Involving multiplex stream encryption) appears on 203 US grants and 228 published applications in this corpus.
Search patents in H04N- Granted patents
- 203
- Published applications
- 228
- Assignees
- 104
- Inventors
- 396
- Latest grant
- 30 Dec 2025
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 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 6 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 10 |
| 2003 | 0 | 14 |
| 2004 | 1 | 7 |
| 2005 | 2 | 14 |
| 2006 | 11 | 17 |
| 2007 | 12 | 23 |
| 2008 | 7 | 14 |
| 2009 | 12 | 20 |
| 2010 | 20 | 13 |
| 2011 | 12 | 6 |
| 2012 | 13 | 11 |
| 2013 | 13 | 8 |
| 2014 | 15 | 13 |
| 2015 | 14 | 11 |
| 2016 | 14 | 5 |
| 2017 | 3 | 6 |
| 2018 | 7 | 8 |
| 2019 | 9 | 4 |
| 2020 | 6 | 6 |
| 2021 | 4 | 6 |
| 2022 | 3 | 4 |
| 2023 | 4 | 4 |
| 2024 | 4 | 2 |
| 2025 | 2 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Enterprise content gateway30 Dec 2025US 12,513,781 B2Blonder-Tongue Laboratories, Inc.
- Systems and methods for adapting content items to secured endpoint media device data27 May 2025US 12,316,896 B2DISH Network L.L.C.
- Estimating video resolution delivered by an encrypted video stream13 Aug 2024US 12,063,403 B2Telefonaktiebolaget LM Ericsson (publ)
- Broadcast in-home streaming11 Jun 2024US 12,010,367 B2Synamedia Limited
- System and method for managing adaptive bitrate video streaming26 Mar 2024US 11,943,275 B2
- Distributed storage of content across storage subsystems24 Sep 2026US 2026/0292279 A1Comcast Cable Communications, LLC
- Enterprise content gateway14 May 2026US 2026/0136434 A1Blonder-Tongue Laboratories, Inc.
- Systems and methods for adapting content items to secured endpoint media device data23 May 2024US 2024/0171798 A1DISH Network L.L.C.
- Delivery of encrypted multiplexes via hyper text transfer protocol2 May 2024US 2024/0146982 A1ARRIS Enterprises LLC
- Media packaging30 Nov 2023US 2023/0388607 A1Viacom International Inc.
Most cited
By later US patents
- System and method for multicasting multimedia content376US 6,351,467 B1Hughes Electronics Corporation · 2002
- Method and apparatus for transmitting, receiving and communicating digital data signals with corresponding program data signals which describe the digital data signals329US 5,239,540 AScientific-Atlanta, Inc. · 1993
- System and method for distribution and delivery of media context and other data to aircraft passengers261US 6,810,527 B1News America, Inc. · 2004
- System for and method of authenticating a client200US 5,784,464 AFujitsu Limited · 1998
- Cryptographic system using interchangeable key blocks and selectable key fragments190US 4,694,491 AGeneral Instrument Corporation · 1987