Patents by Inventor Carl Ståhl
Carl Ståhl 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: 11139767Abstract: According to embodiments described herein, there are provided methods and apparatus for providing a driving signal to a transducer, wherein the driving signal is output by an amplifier. A method comprises receiving an indication of a voltage and a current of the driving signal; based on an electrical model of the transducer and the voltage and the current of the driving signal, estimating an estimated electrical response of the transducer representative of movement of a mass in the transducer; comparing the estimated electrical response to a desired electrical response; and controlling the driving signal based on the comparison.Type: GrantFiled: December 3, 2018Date of Patent: October 5, 2021Assignee: Cirrus Logic, Inc.Inventors: Marco Janko, Harsha Rao, Carl Ståhl, Rong Hu
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Patent number: 11121661Abstract: A method for minimizing settling of a moving mass of an electromagnetic load may include determining a polarity and a magnitude of a velocity of the moving mass based on real time measurements of one or more parameters associated with the electromagnetic load and based on the polarity and the magnitude of the velocity, generating a braking signal to be applied to the moving mass that opposes the polarity of the velocity.Type: GrantFiled: December 4, 2019Date of Patent: September 14, 2021Assignee: Cirrus Logic, Inc.Inventors: Marco Janko, Emmanuel Marchais, Carl Ståhl
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Publication number: 20200403546Abstract: A method for minimizing settling of a moving mass of an electromagnetic load may include determining a polarity and a magnitude of a velocity of the moving mass based on real time measurements of one or more parameters associated with the electromagnetic load and based on the polarity and the magnitude of the velocity, generating a braking signal to be applied to the moving mass that opposes the polarity of the velocity.Type: ApplicationFiled: December 4, 2019Publication date: December 24, 2020Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Marco JANKO, Emmanuel MARCHAIS, Carl STÅHL
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Publication number: 20190296674Abstract: According to embodiments described herein, there is provided methods and apparatus for providing a driving signal to a transducer, wherein the driving signal is output by an amplifier. A method comprises receiving an indication of a voltage and a current of the driving signal; based on an electrical model of the transducer and the voltage and the current of the driving signal, estimating an estimated electrical response of the transducer representative of movement of a mass in the transducer; comparing the estimated electrical response to a desired electrical response; and controlling the driving signal based on the comparison.Type: ApplicationFiled: December 3, 2018Publication date: September 26, 2019Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Marco JANKO, Harsha RAO, Carl STÅHL, Rong HU
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Patent number: 10356503Abstract: A storage and charging capsule for a pair of wireless earbuds is presented. The storage and charging capsule has a base part, an elongate intermediate part, the intermediate part having a longitudinal major axis, and a cover part being retractable over the intermediate part. The intermediate part has a first end attached to the base part, a second end, and an earbud chamber formed between the first and second ends. The earbud chamber is adapted to receive the pair of wireless earbuds arranged one after another along the longitudinal major axis of the intermediate part. The capsule further has a power source for charging the pair of wireless earbuds when placed in the earbud chamber in the intermediate part.Type: GrantFiled: April 12, 2018Date of Patent: July 16, 2019Assignee: Earin ABInventors: Olle Lindén, Kiril Trajkovski, Per Sennström, Carl Ståhl, Markus Millfjord, Henrik Hovmøller
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Publication number: 20180234756Abstract: A storage and charging capsule for a pair of wireless earbuds is presented. The storage and charging capsule has a base part, an elongate intermediate part, the intermediate part having a longitudinal major axis, and a cover part being retractable over the intermediate part. The intermediate part has a first end attached to the base part, a second end, and an earbud chamber formed between the first and second ends. The earbud chamber is adapted to receive the pair of wireless earbuds arranged one after another along the longitudinal major axis of the intermediate part. The capsule further has a power source for charging the pair of wireless earbuds when placed in the earbud chamber in the intermediate part.Type: ApplicationFiled: April 12, 2018Publication date: August 16, 2018Inventors: Olle Lindén, Kiril Trajkovski, Per Sennström, Carl Ståhl, Markus Millfjord, Henrik Hovmøller
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Patent number: 9967645Abstract: A storage and charging capsule for a pair of wireless earbuds is presented. The storage and charging capsule has a base part, an elongate intermediate part, the intermediate part having a longitudinal major axis, and a cover part being retractable over the intermediate part. The intermediate part has a first end attached to the base part, a second end, and an earbud chamber formed between the first and second ends. The earbud chamber is adapted to receive the pair of wireless earbuds arranged one after another along the longitudinal major axis of the intermediate part. The capsule further has a power source for charging the pair of wireless earbuds when placed in the earbud chamber in the intermediate part.Type: GrantFiled: November 29, 2016Date of Patent: May 8, 2018Assignee: EARIN ABInventors: Olle Lindén, Kiril Trajkovski, Per Sennström, Carl Ståhl, Markus Millfjord, Henrik Hovmøller
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Publication number: 20170085977Abstract: A storage and charging capsule for a pair of wireless earbuds is presented. The storage and charging capsule has a base part, an elongate intermediate part, the intermediate part having a longitudinal major axis, and a cover part being retractable over the intermediate part. The intermediate part has a first end attached to the base part, a second end, and an earbud chamber formed between the first and second ends. The earbud chamber is adapted to receive the pair of wireless earbuds arranged one after another along the longitudinal major axis of the intermediate part. The capsule further has a power source for charging the pair of wireless earbuds when placed in the earbud chamber in the intermediate part.Type: ApplicationFiled: November 29, 2016Publication date: March 23, 2017Inventors: Olle Lindén, Kiril Trajkovski, Per Sennström, Carl Ståhl, Markus Millfjord, Henrik Hovmøller
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Patent number: 9532128Abstract: A storage and charging capsule for a pair of wireless earbuds is presented. The storage and charging capsule has a base part, an elongate intermediate part, the intermediate part having a longitudinal major axis, and a cover part being retractable over the intermediate part. The intermediate part has a first end attached to the base part, a second end, and an earbud chamber formed between the first and second ends. The earbud chamber is adapted to receive the pair of wireless earbuds arranged one after another along the longitudinal major axis of the intermediate part. The capsule further has a power source for charging the pair of wireless earbuds when placed in the earbud chamber in the intermediate part.Type: GrantFiled: September 5, 2014Date of Patent: December 27, 2016Assignee: Earin ABInventors: Olle Lindén, Kiril Trajkovski, Per Sennström, Carl Ståhl, Markus Millfjord, Henrik Hovmøller
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Patent number: 9402120Abstract: A wireless earbud has an earbud housing having a longitudinal main axis and an essentially circular cross section, a loudspeaker element, a rechargeable battery, at least one main printed circuit board having disposed thereon circuitry for wireless radio communication, audio codec and earbud operation control, and a charging interface member. The loudspeaker element, the rechargeable battery, the main printed circuit board and the charging interface member are arranged in a successive order along the longitudinal main axis of the earbud housing.Type: GrantFiled: September 5, 2014Date of Patent: July 26, 2016Assignee: EPICKAL ABInventors: Olle Lindén, Kiril Trajkovski, Per Sennström, Carl Ståhl, Markus Millfjord, Henrik Hovmøller
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Publication number: 20160073189Abstract: A storage and charging capsule for a pair of wireless earbuds is presented. The storage and charging capsule has a base part, an elongate intermediate part, the intermediate part having a longitudinal major axis, and a cover part being retractable over the intermediate part. The intermediate part has a first end attached to the base part, a second end, and an earbud chamber formed between the first and second ends. The earbud chamber is adapted to receive the pair of wireless earbuds arranged one after another along the longitudinal major axis of the intermediate part. The capsule further has a power source for charging the pair of wireless earbuds when placed in the earbud chamber in the intermediate part.Type: ApplicationFiled: September 5, 2014Publication date: March 10, 2016Inventors: Olle Lindén, Kiril Trajkovski, Per Sennström, Carl Ståhl, Markus Millfjord, Henrik Hovmøller
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Publication number: 20160073188Abstract: A wireless earbud has an earbud housing having a longitudinal main axis and an essentially circular cross section, a loudspeaker element, a rechargeable battery, at least one main printed circuit board having disposed thereon circuitry for wireless radio communication, audio codec and earbud operation control, and a charging interface member. The loudspeaker element, the rechargeable battery, the main printed circuit board and the charging interface member are arranged in a successive order along the longitudinal main axis of the earbud housing.Type: ApplicationFiled: September 5, 2014Publication date: March 10, 2016Inventors: Olle Lindén, Kiril Trajkovski, Per Sennström, Carl Ståhl, Markus Millfjord, Henrik Hovmøller
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Patent number: 8150072Abstract: A vibration generator for a portable electronic device includes a speaker driver and a counterweight retained by a housing to form a closed assembly. When a communications transmission is received by the electronic device, an input force signal is transmitted to the speaker driver to apply a force at a frequency substantially below its resonance frequency. Air sealed within the vibration generator between the speaker driver and the counterweight transmits the force signal inputted to the speaker driver to the counterweight with minimal dissipation, thereby causing the counterweight to vibrate at substantially the same frequency as that of the input force signal. The vibrations of the counterweight alert a user that a communications transmission is being received.Type: GrantFiled: May 9, 2008Date of Patent: April 3, 2012Assignee: Sony Ericsson Mobile Communications ABInventor: Carl Ståhl
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Patent number: 7925035Abstract: An electro-acoustic communications unit (20) may include an acoustic driver (22) which, when operated, emits acoustic waves in two directions. A hermetically sealed container (24) attached to the acoustic driver may include a gas other than air. The gas may transport acoustic waves generated by the acoustic driver.Type: GrantFiled: April 7, 2006Date of Patent: April 12, 2011Assignee: Sony Ericsson Mobile Communications ABInventors: Fredrik M. Stenmark, Carl Ståhl