H03L 2207/08
Modifications of the phase-locked loop for ensuring constant frequency when the power
Official title: Modifications of the phase-locked loop for ensuring constant frequency when the power supply fails or is interrupted, e.g. for saving power
H03L2207/08 (Modifications of the phase-locked loop for ensuring constant frequency when the power) appears on 40 US grants and 18 published applications in this corpus.
Search patents in H03L- Granted patents
- 40
- Published applications
- 18
- Assignees
- 30
- Inventors
- 81
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
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| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
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| 1991 | 1 | 0 |
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| 1996 | 3 | 0 |
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| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 3 |
| 2013 | 3 | 0 |
| 2014 | 3 | 3 |
| 2015 | 2 | 3 |
| 2016 | 3 | 2 |
| 2017 | 2 | 1 |
| 2018 | 2 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Adaptive frequency scaling based on clock cycle time measurement11 Nov 2025US 12,470,223 B2Proteantecs Ltd.
- Feedback control for accurate signal generation19 Oct 2021US 11,152,947 B2Renesas Electronics America Inc.
- Digital phase locked loop and operating method of digital phase locked loop18 Dec 2018US 10,158,367 B1Samsung Electronics Co., Ltd.
- Phase continuity technique for frequency synthesis13 Feb 2018US 9,893,875 B2QUALCOMM Incorporated
- Voltage controlled oscillator, semiconductor device, and electronic device12 Dec 2017US 9,843,308 B2Semiconductor Energy Laboratory Co.Ltd.
- Adaptive frequency scaling based on clock cycle time measurement7 Nov 2024US 2024/0372554 A1Proteantecs Ltd.
- Feedback control for accurate signal generation20 Aug 2020US 2020/0266823 A1Renesas Electronics America Inc.
- Digital phase locked loop and operating method of digital phase locked loop27 Dec 2018US 2018/0375523 A1Samsung Electronics Co., Ltd.
- Phase continuity technique for frequency synthesis23 Nov 2017US 2017/0338940 A1QUALCOMM Incorporated
- Electronic circuit29 Dec 2016US 2016/0380641 A1Fujitsu Limited
Most cited
By later US patents
- Power saving intermittently operated phase locked loop66US 4,743,864 AHitachi, Ltd. · 1988
- Method and apparatus for reducing PLL lock time60US 6,731,146 B1QUALCOMM Incorporated · 2004
- Method and apparatus for reducing standby current in communications equipment43US 5,943,613 ATelefonaktiebolaget LM Ericsson · 1999
- Battery saving frequency synthesizer arrangement36US 4,521,918 AGeneral Electric Company · 1985
- Phase-locked loop circuit36US 5,581,214 AMitsubishi Denki Kabushiki Kaisha · 1996