H04N 21/631
Multimode transmission
Official title: {Multimode Transmission, e.g. transmitting basic layers and enhancement layers of the content over different transmission paths or transmitting with different error corrections, different keys or with different transmission protocols}
H04N21/631 (Multimode transmission) appears on 712 US grants and 922 published applications in this corpus.
Search patents in H04N- Granted patents
- 712
- Published applications
- 922
- Assignees
- 347
- Inventors
- 1,567
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 3 |
| 2002 | 1 | 18 |
| 2003 | 6 | 15 |
| 2004 | 4 | 22 |
| 2005 | 5 | 25 |
| 2006 | 6 | 91 |
| 2007 | 10 | 39 |
| 2008 | 21 | 31 |
| 2009 | 14 | 44 |
| 2010 | 22 | 54 |
| 2011 | 36 | 46 |
| 2012 | 40 | 48 |
| 2013 | 52 | 57 |
| 2014 | 63 | 63 |
| 2015 | 52 | 66 |
| 2016 | 49 | 40 |
| 2017 | 46 | 34 |
| 2018 | 38 | 26 |
| 2019 | 42 | 31 |
| 2020 | 26 | 43 |
| 2021 | 41 | 29 |
| 2022 | 30 | 31 |
| 2023 | 33 | 19 |
| 2024 | 25 | 23 |
| 2025 | 24 | 18 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Media session orchestrator25 Aug 2026US 12,719,939 B1Amazon Technologes, Inc.
- Broadcast reception device and video display method4 Aug 2026US 12,701,290 B2Maxell, Ltd.
- Livestream data transmission method, apparatus and system, device and medium23 Jun 2026US 12,666,092 B2Beijing Bytedance Network Technology Co., Ltd.
- Transporting HEIF-formatted images over real-time transport protocol17 Mar 2026US 12,581,098 B2QUALCOMM Incorporated
- Transporting ultra-high definition video from multiple sources3 Mar 2026US 12,568,183 B2Raytheon Company
- System and Method for Distributed Data Center and Power System1 Oct 2026US 2026/0303925 A1
- Video transmission method and apparatus, and device and storage medium2 Jul 2026US 2026/0189739 A1
- Improvements to video data distribution networks11 Jun 2026US 2026/0163676 A1Global Invacom Limited
- Delivery of foveated rendering streams for media content delivery28 May 2026US 2026/0149841 A1Adeia Guides Inc.
- Harq procedures for distributed video coding7 May 2026US 2026/0128821 A1QUALCOMM Incorporated
Most cited
By later US patents
- Method and apparatus for modifying encoded digital video for improved channel utilization405US 5,956,088 AImedia Corporation · 1999
- An HDTV compression system289US 5,122,875 AGeneral Electric Company · 1992
- Priority selection apparatus as for a video signal processor221US 5,111,292 AGeneral Electric Company · 1992
- Channel and quality of service adaptation for multimedia over wireless networks195US 6,999,432 B2Microsoft Corporation · 2006
- Software-based encoder for a software-implemented end-to-end scalable video delivery system168US 5,621,660 ASun Microsystems, Inc. · 1997