Sony Corporation

Sony Mobile Communications Ab

Sony Ericsson Mobile Communications Ab

Sony Mobile Communications Inc.

Kaj Ullén

Magnus Birch

Peter Körner

Jonny Strandh

Martin Eriksson

Kiril Trajkovski

A method for reducing a disturbance on a signal path is provided. The disturbance is caused by a capacitance ()of a semiconductor switch (-) of an integrated circuit (). The semiconductor switch (-) switches the signal path. The capacitance () acts between the semiconductor switch (-) and a power supply terminal of the integrated circuit (). According to the method, the power supply terminal of the integrated circuit () is coupled via an impedance () to a power supply ().

Reducing a disturbance on a signal path of a semiconductor switch

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.

Circuit assembly for processing an electrical signal of a microphone

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.

Method and device for reducing interference in an audio signal during a call

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.

Method for reducing a disturbance in an input signal caused by an output signal in a multi-port connector, multi-port connector, and mobile device

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.

Mobile phone with improved keyboard scanning and component reduction and method

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.

Biasing arrangement, electronic apparatus, biasing method, and computer program

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.

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Bjärred, Sweden

Kaj Ullén