Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10380878 | Systems and methods for coordinating and administering self tests of smart home devices having audible outputs | Daniel Adam Warren, Edwin H. Satterthwaite, Jr., Steven Clark, Andrew Goldenson, Dietrich Ho +4 more | 2019-08-13 |
| 10320347 | Light sensor readout system and method of converting light into electrical signals | Morakinyo John Aina | 2019-06-11 |
| 10121333 | Device with precision frequency stabilized audible alarm circuit | Daniel Adam Warren, Dietrich Ho, Morakinyo John Aina, Ian C. Smith, William Alan Saperstein +1 more | 2018-11-06 |
| 9953516 | Systems and methods for self-administering a sound test | Daniel Adam Warren, Edwin H. Satterthwaite, Jr., Steven Clark, Dietrich Ho, Nicholas Webb +1 more | 2018-04-24 |
| 9898922 | Systems and methods for coordinating and administering self tests of smart home devices having audible outputs | Daniel Adam Warren, Edwin H. Satterthwaite, Jr., Steven Clark, Andrew Goldenson, Dietrich Ho +4 more | 2018-02-20 |
| 9886843 | Systems and methods for coordinating and administering self tests of smart home devices having audible outputs | Daniel Adam Warren, Edwin H. Satterthwaite, Jr., Steven Clark, Andrew Goldenson, Dietrich Ho +4 more | 2018-02-06 |
| 9780743 | Light sensor readout system and method of converting light into electrical signals | Morakinyo John Aina | 2017-10-03 |
| 9454893 | Systems and methods for coordinating and administering self tests of smart home devices having audible outputs | Daniel Adam Warren, Edwin H. Satterthwaite, Jr., Steven Clark, Andrew Goldenson, Dietrich Ho +4 more | 2016-09-27 |
| 8812883 | Systems and methods for providing device-to-device handshaking through a power supply signal | Doug M. Farrar, Brian Sander | 2014-08-19 |
| 8369534 | Mode switching noise cancellation for microphone-speaker combinations used in two way audio communications | Timothy M. Johnson, Wendell B. Sander, Douglas M. Farrar | 2013-02-05 |
| 8358788 | Noise cancellation for microphone-speaker combinations using combined speaker amplifier and reference sensing | Timothy M. Johnson | 2013-01-22 |
| 8340312 | Differential mode noise cancellation with active real-time control for microphone-speaker combinations used in two way audio communications | Timothy M. Johnson | 2012-12-25 |
| 8332664 | Systems and methods for providing device-to-device handshaking through a power supply signal | Doug M. Farrar, Brian Sander | 2012-12-11 |
| 8150058 | Mode switching noise cancellation for microphone-speaker combinations used in two way audio communications | Timothy M. Johnson, Wendell B. Sander, Douglas M. Farrar | 2012-04-03 |
| 7358884 | Methods and systems for implementing a Digital-to-Analog Converter | David Tupman, Brian A. Childers | 2008-04-15 |
| 7039203 | Reduced complexity audio mixing apparatus | — | 2006-05-02 |
| 6404892 | Reduced complexity audio mixing apparatus | — | 2002-06-11 |
| 5887177 | Host-controlled power management of a computer sound system | — | 1999-03-23 |
| 5774567 | Audio codec with digital level adjustment and flexible channel assignment | — | 1998-06-30 |
| 5631966 | Audio signal conversion using frequency band division | — | 1997-05-20 |
| 5621472 | System for inexpensive phase coherent subcarrier generation | Henry N. Kannapell | 1997-04-15 |
| 5621535 | Direct digital synthesis of video signal recording waveforms from baseband digital signals provided by a computer interface for compatible recording onto analog video tape | — | 1997-04-15 |
| 5613010 | Apparatus for reproducing sound with a reduced dynamic range | Steven E. Austin | 1997-03-18 |
| 5598353 | Method and apparatus for combining a multiple-bit digital audio signal with a single-bit digital audio signal | — | 1997-01-28 |
| 5570296 | System and method for synchronized presentation of video and audio signals | Henry N. Kannapell | 1996-10-29 |