Patents by Inventor Kaj Ullén
Kaj Ullén 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: 9407256Abstract: A method for reducing a disturbance on a signal path is provided. The disturbance is caused by a capacitance (203, 214)of a semiconductor switch (131-133) of an integrated circuit (130). The semiconductor switch (131-133) switches the signal path. The capacitance (203, 214) acts between the semiconductor switch (131-133) and a power supply terminal of the integrated circuit (130). According to the method, the power supply terminal of the integrated circuit (130) is coupled via an impedance (138, 139) to a power supply (137, 140).Type: GrantFiled: May 30, 2011Date of Patent: August 2, 2016Assignees: Sony Corporation, Sony Mobile Communications, Inc.Inventors: Peter Körner, Kaj Ullén
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Patent number: 9077342Abstract: A circuit assembly for processing an electrical signal of a microphone is provided. The microphone has an inherent impedance. The circuit assembly comprises an impedance circuit, a signal processing unit, a first electrical signal path, and a second electrical signal path. The first electrical signal path is coupleable to a first electrical output of the microphone and is furthermore coupled to a first input of the signal processing unit. The second electrical signal path is coupleable to a second electrical output of the microphone and is furthermore coupled to a second input of the signal processing unit via the impedance circuit. An impedance value of the impedance circuit is selected based on an impedance value of the inherent impedance of the microphone.Type: GrantFiled: August 11, 2011Date of Patent: July 7, 2015Assignees: Sony Corporation, Sony Mobile Communications ABInventors: Magnus Birch, Kaj Ullen
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Patent number: 8818542Abstract: In order to reduce interference in an audio signal during a call on a mobile communication device, a plurality of transforms of the audio signal is performed, each transform containing phase information and amplitude information of corresponding samples of the audio signal. The results of the transforms are then averaged in order to generating a compensation signal that can be subtracted from the audio signal.Type: GrantFiled: November 3, 2011Date of Patent: August 26, 2014Assignees: Sony Corporation, Sony Mobile Communications ABInventors: Jonny Strandh, Kaj Ullén
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Publication number: 20140098977Abstract: A method for reducing a disturbance on a signal path is provided. The disturbance is caused by a capacitance of a semiconductor switch (131-133) of an integrated circuit (130). The semiconductor switch (131-133) switches the signal path. The capacitance (203, 214) acts between the semiconductor switch (131-133) and a power supply terminal of the integrated circuit (130). According to the method, the power supply terminal of the integrated circuit (130) is coupled via an impedance (138, 139) to a power supply (137, 140).Type: ApplicationFiled: May 30, 2011Publication date: April 10, 2014Applicant: Sony Ericsson Mobile Communications ABInventors: Peter Körner, Kaj Ullén
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Patent number: 8666091Abstract: A method for reducing a disturbance in an input signal caused by an output signal in a multi-port connector, a multi-port connector circuit for reducing a disturbance in an input signal caused by an output signal, and a mobile device are described.Type: GrantFiled: June 13, 2008Date of Patent: March 4, 2014Assignees: Sony Corporation, Sony Mobile Communications ABInventors: Kaj Ullén, Martin Eriksson
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Patent number: 8421651Abstract: Apparatus and method to detect one or more keys of a mobile wireless electronic device that have received an activating input, e.g., have been pressed, interrogates simultaneously several keys of a group of keys to reduce time required to detect which of the keys is pushed to provide inputs to the electronic device. The keys are arranged in a two dimensional matrix that facilitates organized interrogation of the keys. Resistors are used in providing a decoupling effect with respect to the antenna function of the wireless electronic device.Type: GrantFiled: April 29, 2009Date of Patent: April 16, 2013Assignees: Sony Corporation, Sony Mobile Communications ABInventors: Magnus Birch, Kaj Ullen
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Publication number: 20120308041Abstract: A circuit assembly for processing an electrical signal of a microphone is provided. The microphone has an inherent impedance. The circuit assembly comprises an impedance circuit, a signal processing unit, a first electrical signal path, and a second electrical signal path. The first electrical signal path is coupleable to a first electrical output of the microphone and is furthermore coupled to a first input of the signal processing unit. The second electrical signal path is coupleable to a second electrical output of the microphone and is furthermore coupled to a second input of the signal processing unit via the impedance circuit. An impedance value of the impedance circuit is selected based on an impedance value of the inherent impedance of the microphone.Type: ApplicationFiled: August 11, 2011Publication date: December 6, 2012Applicant: SONY ERICSSON MOBILE COMMUNICATIONS ABInventors: Magnus Birch, Kaj Ullen
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Patent number: 8326255Abstract: A biasing arrangement for an electronic apparatus having an input device connected by wires is disclosed. The biasing arrangement comprises a bias signal generator arranged to provide a bias voltage and a reference voltage; a flying capacitor circuitry having a first set of switches connected to said bias signal generator to selectively connecting and disconnecting the bias voltage and reference voltage, respectively, over a capacitor of the flying capacitor circuitry, and the flying capacitor circuitry further having a second set of switches to selectively connecting and disconnecting the voltage over the capacitor to an output of the flying capacitor circuitry, wherein the first and second sets of switches are not both in a connecting state at any time; and a wired connection between output of the flying capacitor circuitry and the input device of the apparatus. An electronic apparatus, a biasing method, and a computer program are also disclosed.Type: GrantFiled: November 7, 2008Date of Patent: December 4, 2012Assignee: Sony Ericsson Mobile Communications ABInventors: Kaj Ullen, Peter Korner, Kiril Trajkovski
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Publication number: 20120116753Abstract: In order to reduce interference in an audio signal during a call on a mobile communication device, a plurality of transforms of the audio signal is performed, each transform containing phase information and amplitude information of corresponding samples of the audio signal. The results of the transforms are then averaged in order to generating a compensation signal that can be subtracted from the audio signal.Type: ApplicationFiled: November 3, 2011Publication date: May 10, 2012Applicant: SONY ERICSSON MOBILE COMMUNICATIONS ABInventors: Jonny STRANDH, Kaj ULLÉN
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Publication number: 20100277348Abstract: Apparatus and method to detect one or more keys of a mobile wireless electronic device that have received an activating input, e.g., have been pressed, interrogates simultaneously several keys of a group of keys to reduce time required to detect which of the keys is pushed to provide inputs to the electronic device. The keys are arranged in a two dimensional matrix that facilitates organized interrogation of the keys. Resistors are used in providing a decoupling effect with respect to the antenna function of the wireless electronic device.Type: ApplicationFiled: April 29, 2009Publication date: November 4, 2010Applicant: SONY ERICSSON MOBILE COMMUNICATIONS ABInventors: Magnus BIRCH, Kaj ULLEN
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Patent number: 7800443Abstract: A circuit arrangement for providing an analog signal is disclosed. The circuit arrangement comprises a biasing resistor; an analog input arrangement; and a signal output, wherein the biasing resistor and the analog input arrangement are connected in series between a supply voltage and a reference voltage, and the signal output is connected such that the alternating voltage over the biasing resistor is provided as an output signal. An electronic apparatus comprising such a circuit arrangement is also disclosed.Type: GrantFiled: November 7, 2008Date of Patent: September 21, 2010Assignee: Sony Ericsson Mobile Communications ABInventors: Peter Körner, Kaj Ullén
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Publication number: 20100073072Abstract: A biasing arrangement for an electronic apparatus having an input device connected by wires is disclosed. The biasing arrangement comprises a bias signal generator arranged to provide a bias voltage and a reference voltage; a flying capacitor circuitry having a first set of switches connected to said bias signal generator to selectively connecting and disconnecting the bias voltage and reference voltage, respectively, over a capacitor of the flying capacitor circuitry, and the flying capacitor circuitry further having a second set of switches to selectively connecting and disconnecting the voltage over the capacitor to an output of the flying capacitor circuitry, wherein the first and second sets of switches are not both in a connecting state at any time; and a wired connection between output of the flying capacitor circuitry and the input device of the apparatus. An electronic apparatus, a biasing method, and a computer program are also disclosed.Type: ApplicationFiled: November 7, 2008Publication date: March 25, 2010Applicant: SONY ERICSSON MOBILE COMMUNICATIONS ABInventors: Kaj ULLEN, Peter KORNER, Kiril TRAJKOVSKI
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Publication number: 20100073091Abstract: A circuit arrangement for providing an analog signal is disclosed. The circuit arrangement comprises a biasing resistor; an analog input arrangement; and a signal output, wherein the biasing resistor and the analog input arrangement are connected in series between a supply voltage and a reference voltage, and the signal output is connected such that the alternating voltage over the biasing resistor is provided as an output signal. An electronic apparatus comprising such a circuit arrangement is also disclosed.Type: ApplicationFiled: November 7, 2008Publication date: March 25, 2010Applicant: SONY ERICSSON MOBILE COMMUNICATIONS ABInventors: Peter KORNER, Kaj ULLEN
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Publication number: 20100073079Abstract: A biasing arrangement for an electronic apparatus having an input device is disclosed. The biasing arrangement comprises a bias voltage generator arranged to provide a bias voltage; a bias resistor connected between the bias voltage generator and the input device; and a reference voltage point of the input device, wherein a voltage of the reference voltage point of the input device is provided to the bias voltage generator for controlling the bias voltage in relation to the voltage of the reference voltage point of the input device. An electronic apparatus is also disclosed.Type: ApplicationFiled: November 7, 2008Publication date: March 25, 2010Applicant: SONY ERICSSON MOBILE COMMUNICATIONS ABInventors: Kaj ULLEN, Peter KORNER, Magnus BIRCH
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Publication number: 20100007407Abstract: A circuit for generating a negative voltage supply signal is disclosed. The circuit has a first capacitive element coupled to receive a switched input signal which switches at least between a first state with a positive first voltage and a second state with a second voltage, different from the first voltage. A second capacitive element is coupled to provide the negative voltage supply signal. Control circuitry is coupled to the first capacitive element and the second capacitive element. The control circuitry is arranged, in the first state of the switched input signal, to enable charging of the first capacitive element by the switched input signal, and, in the second state of the switched input signal, to enable charging of the second capacitive element by the first capacitive element to generate the negative voltage supply signal.Type: ApplicationFiled: July 8, 2008Publication date: January 14, 2010Applicant: SONY ERICSSON MOBILE COMMUNICATIONS ABInventors: Kiril TRAJKOVSKI, Kaj ULLEN
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Publication number: 20090325633Abstract: A method for reducing a disturbance in an output signal caused by a disturbing signal in a multiport connector, a multiport connector circuit and a mobile device are described.Type: ApplicationFiled: July 18, 2008Publication date: December 31, 2009Applicant: Sony Ericsson Mobile Communications ABInventors: Peter Koerner, Kaj Ullen
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Publication number: 20090310798Abstract: A method for reducing a disturbance in an input signal caused by an output signal in a multi-port connector, a multi-port connector circuit for reducing a disturbance in an input signal caused by an output signal, and a mobile device are described.Type: ApplicationFiled: June 13, 2008Publication date: December 17, 2009Applicant: Sony Ericsson Mobile Communications ABInventors: Kaj Ullen, Martin Eriksson