H04H 2201/186
Am digital or hybrid
Official title: AM digital or hybrid
H04H2201/186 (Am digital or hybrid) appears on 45 US grants and 32 published applications in this corpus.
Search patents in H04H- Granted patents
- 45
- Published applications
- 32
- Assignees
- 16
- Inventors
- 63
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 7 | 0 |
| 2003 | 3 | 1 |
| 2004 | 0 | 4 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 5 |
| 2008 | 3 | 3 |
| 2009 | 0 | 3 |
| 2010 | 4 | 3 |
| 2011 | 7 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for providing radio content to a vehicle using an enhanced AM radio access system24 Feb 2026US 12,562,830 B2Ford Global Technologies, LLC
- Power down workload estimation26 Dec 2023US 11,853,558 B2Micron Technology, Inc.
- Time-alignment measurement for hybrid HD radio™ technology30 Nov 2021US 11,190,334 B2iBiquity Digital Corporation
- Time-alignment measurement for hybrid HD radio technology26 May 2020US 10,666,416 B2iBiquity Digital Corporation
- Method for streaming through a data service over a radio link subsystem16 Jan 2018US 9,872,066 B2iBiquity Digital Corporation
- Multiband radio systems and methods with dual triplexers and single front-to-back end coaxial connector cable13 Aug 2026US 2026/0238367 A1GM Global Technology Operations LLC
- Digital Signal Quality Metric For AM HD Radio Signal23 Jul 2026US 2026/0213863 A1iBiquity Digital Corporation
- System and method for providing radio content to a vehicle using an enhanced am radio access system18 Jun 2026US 2026/0172129 A1Ford Global Technologies, LLC
- Method And System For Synchronizing Audio Transmission In A Single Frequency Network22 May 2025US 2025/0167906 A1iBiquity Digital Corporation
- System and method for providing radio content to a vehicle using an enhanced am radio access system27 Mar 2025US 2025/0105936 A1Ford Global Technologies, LLC
Most cited
By later US patents
- Multistream in-band on-channel systems179US 6,353,637 B1Lucent Technologies Inc. · 2002
- AM-compatible digital broadcasting method and system173US 6,005,894 A1999
- Method and apparatus for AM compatible digital broadcasting138US 5,588,022 AXetron Corporation · 1996
- AM compatible digital waveform frame timing recovery and frame synchronous power measurement107US 5,764,706 AUSA Digital Radio Partners, L.P. · 1998
- AM-PSK system for broadcasting a composite analog and digital signal using adaptive M-ary PSK modulation85US 5,673,292 ANorthrop Grumman Corporation · 1997