Direct current (DC) and/or alternating current (AC) load detection for audio codec
US-9986351-B2 · May 29, 2018 · US
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Allen Daniel John patents
Allen Daniel John is listed as an inventor on 20 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Allen Daniel John |
| Total patents | 20 |
| First publication | Mar 19, 2015 |
| Latest publication | May 29, 2018 |
Notable patents
Publications ranked by popularity score, then publication date.
Opportunistic playback state changes for audio devices
US-9831843-B1 · Nov 28, 2017 · US
Identification of a load with a search algorithm that controls application of signals to the load and a reference generator
US-9800984-B2 · Oct 24, 2017 · US
Direct current (dc) and/or alternating current (ac) load detection for audio codec
US-2017245071-A1 · Aug 24, 2017 · US
Identification of a load with a search algorithm that controls application of signals to the load and a reference generator
US-2017245072-A1 · Aug 24, 2017 · US
Energy-efficient consumer device audio power output stage with gain control
US-9705458-B1 · Jul 11, 2017 · US
Systems and methods for controlling an audio signal path using redundant uninterruptable clock
US-9648414-B1 · May 9, 2017 · US
Charge-pump power supply with voltage-headroom-dependent supply voltage
US-9634621-B1 · Apr 25, 2017 · US
Systems and methods for detection of load impedance of a transducer device coupled to an audio device
US-9578417-B2 · Feb 21, 2017 · US
Systems and methods for detection of load impedance of a transducer device coupled to an audio device
US-9479868-B2 · Oct 25, 2016 · US
Recent patents
Latest publications not already listed above.
Systems and methods for detection of load impedance of a transducer device coupled to an audio device
US-9479869-B2 · Oct 25, 2016 · US
Enhancement of dynamic range of audio signal path
US-9391576-B1 · Jul 12, 2016 · US
Systems and methods for detection of load impedance of a transducer device coupled to an audio device
US-2016165348-A1 · Jun 9, 2016 · US
Reducing kickback current to power supply during charge pump mode transitions
US-9293986-B2 · Mar 22, 2016 · US
Feedback loop for direct current (DC) offset removal
US-9287839-B1 · Mar 15, 2016 · US
Noise management method and circuit for asynchronous signals
US-9276594-B2 · Mar 1, 2016 · US
Headset type detection and configuration techniques
US-9210500-B2 · Dec 8, 2015 · US
Energy-efficient consumer device audio power output stage
US-9112467-B1 · Aug 18, 2015 · US
Systems and methods for detection of load impedance of a transducer device coupled to an audio device
US-2015078559-A1 · Mar 19, 2015 · US
Systems and methods for detection of load impedance of a transducer device coupled to an audio device
US-2015078560-A1 · Mar 19, 2015 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Cirrus Logic Inc | 18 |
| Cirrus Logic Int Semiconductor Ltd | 4 |
| Allen Daniel John | 1 |
| Nguyen Thuan Luong | 1 |
| Ilango Anand S | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| H03F2200/03 | 13 |
| H04R5/04 | 11 |
| H04R29/001 | 10 |
| H04R2420/05 | 9 |
| H03F1/0227 | 9 |