Patents by Inventor Lars Jorn Stenberg
Lars Jorn Stenberg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8259963Abstract: A microphone assembly is provided that includes a condenser transducer element having a displaceable diaphragm and a back-plate. The displaceable diaphragm and the back-plate are arranged to form a capacitor in combination. A preamplifier circuit has an input stage, the input stage comprising a P-type field effect transistor. The displaceable diaphragm and the back-plate are operatively connected between a source input and a gate input of the P-type field effect transistor.Type: GrantFiled: July 6, 2006Date of Patent: September 4, 2012Assignee: Sonion A/SInventors: Lars Jorn Stenberg, Carsten Fallesen
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Patent number: 8229138Abstract: A microphone assembly is provided that includes a condenser transducer element having a displaceable diaphragm and a back-plate. The displaceable diaphragm and the back-plate are arranged to form a capacitor in combination. A preamplifier circuit has an input stage, the input stage comprising a P-type field effect transistor. The displaceable diaphragm and the back-plate are operatively connected between a source input and a gate input of the P-type field effect transistor.Type: GrantFiled: July 6, 2006Date of Patent: July 24, 2012Assignee: Sonion A/SInventors: Lars Jorn Stenberg, Carsten Fallesen
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Patent number: 8094846Abstract: The present invention relates to a condenser microphone assembly comprising a condenser microphone transducer comprising adjacently positioned diaphragm and back-plate members having an air gap there between. Moreover, the assembly comprises a deep sub-micron MOS integrated circuit die comprising a preamplifier comprising a first signal input terminal for receipt of electrical signals generated by the condenser microphone transducer. The first signal input terminal is operatively coupled to an input stage of the preamplifier, said input stage comprising a thick-oxide transistor. The present invention further relates to a deep sub-micron MOS integrated circuit die comprising a thick-oxide transistor-based preamplifier.Type: GrantFiled: December 17, 2007Date of Patent: January 10, 2012Assignee: Epcos PTE Ltd.Inventors: Per F. Høvesten, Lars Jørn Stenberg
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Patent number: 8036401Abstract: A MEMS microphone comprising a MEMS transducer having a back plate and a diaphragm as well as controllable bias voltage generator providing a DC bias voltage between the back plate and the diaphragm. The microphone also has an amplifier with a controllable gain, and a memory for storing information for determining a bias voltage to be provided by the bias voltage generator and the gain of the amplifier.Type: GrantFiled: September 25, 2007Date of Patent: October 11, 2011Assignee: EPCOS Pte LtdInventors: Jens Kristian Poulsen, Carsten Fallesen, Lars Jørn Stenberg, Jozef Johannes Gerardus Bosch
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Patent number: 7548626Abstract: A condenser microphone is provided having a transducer element. A diaphragm has an electrically conductive portion. A back-plate has an electrically conductive portion. A DC bias voltage element is operatively coupled to the diaphragm and the back-plate. A collapse detection element is adapted to determine a physical parameter value related to a separation between the diaphragm and the back-plate. A collapse control element is adapted to control the DC bias voltage element based on the determined physical parameter value.Type: GrantFiled: May 20, 2005Date of Patent: June 16, 2009Assignee: Sonion A/SInventors: Lars Jørn Stenberg, Jens Kristian Poulsen, Aart Zeger Van Halteren
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Patent number: 7466835Abstract: The present invention provides a miniature MEMS microphone comprising a single-ended transducer element connected to an amplifier providing a differential electrical output at terminals arranged at a substantially plane exterior surface. The differential or balanced output signal provides a miniature microphone exhibiting a high dynamic range and a reduced susceptibility to EMI. The microphone is adapted for surface mounting thus the extra output terminal required is still suitable for low cost mass production. In preferred embodiments the transducer element and amplifier are silicon-based. The microphone may have a plurality of separate single-ended transducer elements connected to separate amplifiers providing separate differential outputs. The microphones according to the invention are advantageous for applications within for example hearing aids and mobile equipment.Type: GrantFiled: March 18, 2004Date of Patent: December 16, 2008Assignee: Sonion A/SInventors: Lars Jørn Stenberg, Matthias Müllenborn, Igor Mucha
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Publication number: 20080152171Abstract: The present invention relates to a condenser microphone assembly comprising a condenser microphone transducer comprising adjacently positioned diaphragm and back-plate members having an air gap there between. Moreover, the assembly comprises a deep sub-micron MOS integrated circuit die comprising a preamplifier comprising a first signal input terminal for receipt of electrical signals generated by the condenser microphone transducer. The first signal input terminal is operatively coupled to an input stage of the preamplifier, said input stage comprising a thick-oxide transistor. The present invention further relates to a deep sub-micron MOS integrated circuit die comprising a thick-oxide transistor-based preamplifier.Type: ApplicationFiled: December 17, 2007Publication date: June 26, 2008Inventors: Per F. Hovesten, Lars Jorn Stenberg
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Publication number: 20080075306Abstract: A MEMS microphone comprising a MEMS transducer having a back plate and a diaphragm as well as controllable bias voltage generator providing a DC bias voltage between the back plate and the diaphragm. The microphone also has an amplifier with a controllable gain, and a memory for storing information for determining a bias voltage to be provided by the bias voltage generator and the gain of the amplifier.Type: ApplicationFiled: September 25, 2007Publication date: March 27, 2008Inventors: Jens Kristian Poulsen, Carsten Fallesen, Lars Jorn Stenberg, Jozef Johannes Gerardus Bosch
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Patent number: 7336794Abstract: In a first aspect the present invention provides a compact high efficiency driver suitable for driving a loudspeaker, such as a miniature loudspeaker for mobile phones or hearing aids. The driver comprising an interface for receiving an input signal, a three-level modulator, and a three-level H-bridge. The interface may be adapted to receive a digital input signal. In a preferred embodiment of the driver the H-bridge is controlled by a correction circuit which is operated by a Return-To-Zero scheme. In a further preferred embodiment the driver comprises a supply voltage step-up circuit for increasing a voltage supplied to the H-bridge. In a second aspect the present invention provides a miniature loudspeaker assembly having a built-in driver. In a third aspect the present invention provides a mobile device with a built-in miniature loudspeaker assembly.Type: GrantFiled: December 2, 2002Date of Patent: February 26, 2008Assignee: Sonion A/SInventors: Claus Erdmann Fürst, Lars Jorn Stenberg, Jens Kristian Poulsen, Henrik Thomsen
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Publication number: 20040202345Abstract: The present invention provides a miniature MEMS microphone comprising a single-ended transducer element connected to an amplifier providing a differential electrical output at terminals arranged at a substantially plane exterior surface. The differential or balanced output signal provides a miniature microphone exhibiting a high dynamic range and a reduced susceptibility to EMI. The microphone is adapted for surface mounting thus the extra output terminal required is still suitable for low cost mass production. In preferred embodiments the transducer element and amplifier are silicon-based. The microphone may have a plurality of separate single-ended transducer elements connected to separate amplifiers providing separate differential outputs. The microphones according to the invention are advantageous for applications within for example hearing aids and mobile equipment.Type: ApplicationFiled: March 18, 2004Publication date: October 14, 2004Inventors: Lar Jorn Stenberg, Matthias Mullenborn, Igor Mucha
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Publication number: 20030123681Abstract: In a first aspect the present invention provides a compact high efficiency driver suitable for driving a loudspeaker, such as a miniature loudspeaker for mobile phones or hearing aids. The driver comprising an interface for receiving an input signal, a three-level modulator, and a three-level H-bridge. The interface may be adapted to receive a digital input signal. In a preferred embodiment of the driver the H-bridge is controlled by a correction circuit which is operated by a Return-To-Zero scheme. In a further preferred embodiment the driver comprises a supply voltage step-up circuit for increasing a voltage supplied to the H-bridge. In a second aspect the present invention provides a miniature loudspeaker assembly having a built-in driver. In a third aspect the present invention provides a mobile device with a built-in miniature loudspeaker assembly.Type: ApplicationFiled: December 2, 2002Publication date: July 3, 2003Inventors: Claus Erdmann Furst, Lars Jorn Stenberg, Jens Kristian Poulsen, Henrik Thomsen
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Publication number: 20030048911Abstract: A miniature speaker having built-in electronic components for providing a feedback signal for dynamically adjusting acoustical parameters of the miniature speaker. The miniature speaker includes in the preferred embodiment a housing, a magnetic circuit, a coil, a diaphragm, a sensor, and an electronic circuit. The sensor is formed by the metallized portion of the diaphragm and the metallized portion of the housing cover. The two metallized portions form a plate capacitor, and as the diaphragm vibrates, the capacitance of the plate capacitor changes. These changes are converted into a feedback signal which is combined with the input audio signal in an electronic circuit mounted directly on the diaphragm and which drives the speaker while adjusting acoustical parameters, such as resonance, distortion, and sensitivity. The feedback signal can also be used to protect the active components of the miniature speaker against mechanical stress, thereby prolonging the lifetime of the speaker.Type: ApplicationFiled: September 10, 2002Publication date: March 13, 2003Inventors: Claus Erdmann Furst, Lars Jorn Stenberg, Leif Johannsen