Patents Assigned to Harman Becker Gepkocsirendszer Gyarto Korlatolt Felelossegu Tarsasag
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Patent number: 9936299Abstract: Driver for an acoustic transducer having a moving coil of substantially equal length to the air gap. The air gap may itself be extended in length using an upper or lower lip, or both. A stationary coil is also provided. The moving and stationary coils can be controlled by suitable control blocks to form an electromagnet-based transducer with reduced distortion.Type: GrantFiled: January 22, 2016Date of Patent: April 3, 2018Assignee: Harman Becker Gepkocsirendszer Gyarto Korlatolt Felelossegu TarsasagInventor: John B. French
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Patent number: 9807518Abstract: This invention relates to acoustic drivers with stationary and moving coils. Time varying signals are applied to the moving and stationary coils to control the movement of a diaphragm, which produces audible sound. The time varying signals correspond to an input audio signal such that the sound corresponds to the input audio signal. Some of the described embodiments include multiple moving coils, multiple stationary coils or both. Some embodiments include feedback for adjusting one or more of the signals based on a characteristic of the acoustic driver. Various compensation and other features of the invention are also described in relation to various embodiments.Type: GrantFiled: December 30, 2015Date of Patent: October 31, 2017Assignee: Harman Becker Gepkocsirendszer Gyarto Korlatolt Felelossegu TarsasagInventors: John B. French, Andrew J. Mason
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Patent number: 9438998Abstract: Driver for an acoustic transducer having a moving coil of substantially equal length to the air gap. The air gap may itself be extended in length using an upper or lower lip, or both. A stationary coil is also provided. The moving and stationary coils can be controlled by suitable control blocks to form an electromagnet-based transducer with reduced distortion.Type: GrantFiled: March 4, 2014Date of Patent: September 6, 2016Assignee: Harman Becker Gepkocsirendszer Gyarto Korlatolt Felelossegu TarsasagInventor: John B. French
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Patent number: 9438999Abstract: Driver for an acoustic transducer having a moving coil of substantially equal length to the air gap. The air gap may itself be extended in length using an upper or lower lip, or both. A stationary coil is also provided. The moving and stationary coils can be controlled by suitable control blocks to form an electromagnet-based transducer with reduced distortion. The acoustic transducer may be a hybrid acoustic transducer.Type: GrantFiled: March 4, 2014Date of Patent: September 6, 2016Assignee: Harman Becker Gepkocsirendszer Gyarto Korlatolt Felelossegu TarsasagInventor: John B. French
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Patent number: 9247350Abstract: Driver for an acoustic transducer having a moving coil of substantially equal length to the air gap. The air gap may itself be extended in length using an upper or lower lip, or both. A stationary coil is also provided. The moving and stationary coils can be controlled by suitable control blocks to form an electromagnet-based transducer with reduced distortion.Type: GrantFiled: February 7, 2013Date of Patent: January 26, 2016Assignee: Harman Becker Gepkocsirendszer Gyarto Korlatolt Felelossegu TarsasagInventor: John B. French
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Patent number: 9241213Abstract: This invention relates to acoustic transducers with stationary and moving coils, and methods for operating the acoustic transducers. Time varying signals are applied to the moving and stationary coils to control the movement of a diaphragm, which produces sound. The time varying signal applied to the moving coil corresponds to at least a processed version of an input audio signal and is updated based on, at least, a version of the time varying signal applied to the stationary coil. Some embodiments include updating the processed version of the input audio signal in response to a magnetic flux value corresponding to the time-varying signal applied to the stationary coil. Some embodiments include updating the time-varying signal applied to the moving coil in response to a feedback signal.Type: GrantFiled: September 25, 2014Date of Patent: January 19, 2016Assignee: Harman Becker Gepkocsirendszer Gyarto Korlatolt Felelossegu TarsasagInventors: John B. French, David Russell
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Patent number: 9232305Abstract: This invention relates to acoustic drivers with stationary and moving coils. Time varying signals are applied to the moving and stationary coils to control the movement of a diaphragm, which produces audible sound. The time varying signals correspond to an input audio signal such that the sound corresponds to the input audio signal. Some of the described embodiments include multiple moving coils, multiple stationary coils or both. Some embodiments include feedback for adjusting one or more of the signals based on a characteristic of the acoustic driver. Various compensation and other features of the invention are also described in relation to various embodiments.Type: GrantFiled: February 14, 2012Date of Patent: January 5, 2016Assignee: Harman Becker Gepkocsirendszer Gyarto Korlatolt Felelossegu TarsasagInventors: John B. French, Andrew Mason
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Patent number: 9071891Abstract: This invention relates to acoustic drivers with stationary and moving coils. Time varying signals are applied to the moving and stationary coils to control the movement of a diaphragm, which produces audible sound. The time varying signals correspond to an input audio signal such that the sound corresponds to the input audio signal. Some of the described embodiments include multiple moving coils, multiple stationary coils or both. Some embodiments include feedback for adjusting one or more of the signals based on a characteristic of the acoustic driver. Various compensation and other features of the invention are also described in relation to various embodiments.Type: GrantFiled: February 14, 2012Date of Patent: June 30, 2015Assignee: Harman Becker Gepkocsirendszer Gyarto Korlatolt Felelossegu TarsasagInventors: John B. French, Andrew Mason