Patents by Inventor Jonas Persson
Jonas Persson 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: 8460615Abstract: A device is provided for performing chemical transformation in a fluid, with a flow distributor having at least one fluid medium inlet, at least one fluid medium outlet, and at least one confinement wherein the chemical transformation is performed; and a means for rotating, rocking, wagging, or oscillating the device. At least one confinement may be equipped with a provision for providing heat, cooling, sound, light or other types of radiation, such provision being contacted to an external source through an actuator shaft. The flow distributor may be provided with sectors connected with the centrally located fluid medium inlet and a designated peripheral fluid medium outlet. The means for rotating, rocking, wagging, or oscillating the device may be an element producing magnetic fields or a shaft mechanically connected to an external actuating device.Type: GrantFiled: February 11, 2011Date of Patent: June 11, 2013Assignee: Nordic Chemquest ABInventors: Jonas Persson, Kjell Öberg, Fredrik Almqvist, Knut Irgum
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Patent number: 8455764Abstract: A support bracket for supporting insulating rods inside an insulator tube of a hollow core insulator. The support bracket includes a cylindrical ring with an outer surface for abutting against the inner surface of an insulator tube, an inner surface for supporting an insulating rod and two opposing end sides, denominated by first and second end sides. The support bracket includes an expansion assembly configured to be actuated so as to expand the cylindrical ring in at least one radial direction when the support bracket has been inserted in an insulator tube of a live tank circuit breaker.Type: GrantFiled: October 28, 2011Date of Patent: June 4, 2013Assignee: ABB Technology AGInventors: Jonas Persson, Anders Jansson, Anders Strömbeck, Benny Wedin
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Publication number: 20120314602Abstract: A combination of a phase shifter, a measurement receiver, and an offset estimator enable the d.c. offset in the transmit path of a quadrature transmitter to be distinguished from the d.c. offset in the measurement receiver. The measurement receiver performs a first measurement on the transmit path output with a “normal” phase shift of 0 degrees and 90 degrees for in-phase (I) and quadrature (Q) components, and a second measurement with a “special” phase shift for the I and Q components. In one embodiment, the “special” phase shift for the I and Q components is 180 degrees and 270 degrees, respectively.Type: ApplicationFiled: January 20, 2011Publication date: December 13, 2012Applicant: ST-ERICSSON SAInventors: Jonas Persson, Sven Mattisson
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Patent number: 8129412Abstract: Formula (I) wherein R1 is a (2-4C)alkyl and is substituted by two or more fluorine groups and R2 is methyl or ethyl, or a pharmaceutically acceptable salt thereof; processes for their preparation, pharmaceutical compositions containing them and their use in the treatment of diseases or medical conditions mediated by metalloproteinase enzymes.Type: GrantFiled: December 14, 2005Date of Patent: March 6, 2012Assignee: AstraZeneca ABInventors: David Waterson, David Jonas Persson
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Publication number: 20120043112Abstract: A support bracket for supporting insulating rods inside an insulator tube of a hollow core insulator. The support bracket includes a cylindrical ring with an outer surface for abutting against the inner surface of an insulator tube, an inner surface for supporting an insulating rod and two opposing end sides, denominated by first and second end sides. The support bracket includes an expansion assembly configured to be actuated so as to expand the cylindrical ring in at least one radial direction when the support bracket has been inserted in an insulator tube of a live tank circuit breaker.Type: ApplicationFiled: October 28, 2011Publication date: February 23, 2012Inventors: Jonas Persson, Anders Jansson, Anders Strömbeck, Benny Wedin
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Patent number: 8055212Abstract: A wireless communication transmitter is configured to determine transmitter phase shift, and correspondingly includes a derivation circuit, one or more slope polarity tracking circuits, and a phase shift computation circuit. The derivation circuit derives a reference signal from a signal input to the transmitter and a feedback signal from the transmit signal corresponding to that input signal. So derived, differences in the reference and feedback signals reveal the effect the transmitter has on the transmit signal. Accordingly, the transmitter focuses on differences in the polarities of the reference signal's slope and the feedback signal's slope to determine the effect the transmitter has on the phase of the transmit signal. That is, the slope polarity tracking circuits track the slope polarities of the reference and feedback signals, while the phase shift computation circuit computes the transmitter phase shift as a function of differences in those tracked slope polarities.Type: GrantFiled: May 26, 2009Date of Patent: November 8, 2011Assignee: ST-Erisson SAInventors: Jonas Persson, Ralf Burdenski, Ralf Dittrich
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Publication number: 20110203995Abstract: A device is provided for performing chemical transformation in a fluid, with a flow distributor having at least one fluid medium inlet, at least one fluid medium outlet, and at least one confinement wherein the chemical transformation is performed; and a means for rotating, rocking, wagging, or oscillating the device. At least one confinement may be equipped with a provision for providing heat, cooling, sound, light or other types of radiation, such provision being contacted to an external source through an actuator shaft. The flow distributor may be provided with sectors connected with the centrally located fluid medium inlet and a designated peripheral fluid medium outlet. The means for rotating, rocking, wagging, or oscillating the device may be an element producing magnetic fields or a shaft mechanically connected to an external actuating device.Type: ApplicationFiled: February 11, 2011Publication date: August 25, 2011Inventors: Jonas Persson, Kjell Öberg, Fredrik Almqvist, Knut Irgum
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Publication number: 20110176641Abstract: A combination of a phase shifter, a measurement receiver, and an offset estimator enable the d.c. offset in the transmit path of a quadrature transmitter to be distinguished from the d.c. offset in the measurement receiver.Type: ApplicationFiled: January 20, 2010Publication date: July 21, 2011Applicant: ST-Ericsson SAInventor: Jonas Persson
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Publication number: 20100304695Abstract: A wireless communication transmitter is configured to determine transmitter phase shift, and correspondingly includes a derivation circuit, one or more slope polarity tracking circuits, and a phase shift computation circuit. The derivation circuit derives a reference signal from a signal input to the transmitter and a feedback signal from the transmit signal corresponding to that input signal. So derived, differences in the reference and feedback signals reveal the effect the transmitter has on the transmit signal. Accordingly, the transmitter focuses on differences in the polarities of the reference signal's slope and the feedback signal's slope to determine the effect the transmitter has on the phase of the transmit signal. That is, the slope polarity tracking circuits track the slope polarities of the reference and feedback signals, while the phase shift computation circuit computes the transmitter phase shift as a function of differences in those tracked slope polarities.Type: ApplicationFiled: May 26, 2009Publication date: December 2, 2010Inventors: Jonas Persson, Ralf Burdenski, Ralf Dittrich
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Publication number: 20090258640Abstract: A communication device includes a transmitter configured to provide a transmitted output signal, and a power detector configured to receive reference signals from a waveform generator associated with the transmitter, and to receive a portion of the transmitted output signal from the transmitter. The power detector is further configured to compare the reference signals with a digital representation of the portion of the transmitted output signal, and calculate a gain associated with the transmitter based on the comparison. The power detector is also configured to receive, from the waveform generator, a root mean square (RMS) value of the reference signals, and generate an estimate of the output power of the transmitter based on the calculated gain and the root mean square (RMS) value of the reference signals.Type: ApplicationFiled: September 17, 2008Publication date: October 15, 2009Applicant: TELEFONAKTIEBOLAGET LM ERICSSONInventors: Jonas PERSSON, Bo BERNHARDSSON, Robert CARLZEN, Magnus NILSSON, Robert NILSSON
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Publication number: 20080280950Abstract: Formula (I) wherein R1 is a (2-4C)alkyl and is substituted by two or more fluorine groups and R2 is methyl or ethyl, or a pharmaceutically acceptable salt thereof; processes for their preparation, pharmaceutical compositions containing them and their use in the treatment of diseases or medical conditions mediated by metalloproteinase enzymes.Type: ApplicationFiled: December 14, 2005Publication date: November 13, 2008Inventors: David Waterson, David Jonas Persson
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Patent number: 7330073Abstract: Predistortion that will compensate for distortion introduced by a power amplifier circuit is determined by applying a time-varying reference signal to the power amplifier circuit, wherein at each moment the time-varying reference signal has a reference amplitude and a reference phase. A corresponding output signal supplied by the power amplifier circuit is measured, wherein at each moment the output signal has a measured amplitude and a measured phase. Amplitude predistortion is determined by comparing the reference amplitude with the measured amplitude, and phase predistortion is determined by comparing the reference phase with the measured phase. A relationship between the phase predistortion and the reference amplitude is determined such that, for any value of the reference amplitude, a corresponding value of the phase predistortion is identified.Type: GrantFiled: June 29, 2005Date of Patent: February 12, 2008Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Jonas Persson, Per-Olof Brandt
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Active filter and method for scheduling transistor bridge trigger times for each phase of power grid
Patent number: 7289888Abstract: A method for scheduling of periodic real time processes in an operating system, comprising the steps of defining a reference point in time for a periodic real time process, and scheduling the periodic real time process from the reference point in time. Preferably a future point in time is defined as the reference point in time at the start up of the operating system. The real time process is preferably a periodic control process during which a relative control point in time, counted from the beginning of the subsequent control cycle, is calculated during each cycle with absolute time correction counted from the reference point in time. The absolute time correction corresponds to the period of the periodic process multiplied with the number of passed control periods until the beginning of the subsequent control cycle, at which the absolute control point in time is calculated through an addition of the relative control point in time with the absolute time correction.Type: GrantFiled: September 18, 2002Date of Patent: October 30, 2007Assignee: Comsys ABInventor: Jonas Persson -
Patent number: 7145385Abstract: RF polar modulation circuit has a self-compensated temperature stable envelope controller and self-compensated temperature stable power amplifier bias. The circuit has an adaptive current-to-voltage modulation interface with pre-distortion compensation capability. AM/PM distortion are compensated for envelope dependent power amplifier transistor biasing. Automatic compensation is provided for RF loads that are higher or lower than nominal loads. This Abstract is provided to comply with rules requiring an Abstract that allows a searcher or other reader to quickly ascertain subject matter of the technical disclosure. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).Type: GrantFiled: June 17, 2004Date of Patent: December 5, 2006Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Per-Olof Brandt, Jonas Persson
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Patent number: 7138863Abstract: The present invention presents an improved power control scheme for RF power amplifiers. The gain control signal used to control the power amplifier is subjected to pre-distortion (Hpre) before being supplied to the power amplifier, in order to reduce variations in control loop gain.Type: GrantFiled: May 2, 2002Date of Patent: November 21, 2006Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventor: Jonas Persson
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Patent number: 7072420Abstract: The invention relates to a method of adjusting a radio frequency signal produced by radio frequency circuitry in response to receipt of phase and amplitude control signals from digital baseband circuitry which operates to convert digital data signals into such phase and amplitude control signals. The phase and amplitude control signals are adjusted in the digital baseband circuitry in order to compensate for time alignment errors which occur in the radio frequency circuitry.Type: GrantFiled: October 16, 2001Date of Patent: July 4, 2006Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventor: Jonas Persson
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Publication number: 20060071711Abstract: Predistortion that will compensate for distortion introduced by a power amplifier circuit is determined by applying a time-varying reference signal to the power amplifier circuit, wherein at each moment the time-varying reference signal has a reference amplitude and a reference phase. A corresponding output signal supplied by the power amplifier circuit is measured, wherein at each moment the output signal has a measured amplitude and a measured phase. Amplitude predistortion is determined by comparing the reference amplitude with the measured amplitude, and phase predistortion is determined by comparing the reference phase with the measured phase. A relationship between the phase predistortion and the reference amplitude is determined such that, for any value of the reference amplitude, a corresponding value of the phase predistortion is identified.Type: ApplicationFiled: June 29, 2005Publication date: April 6, 2006Inventors: Jonas Persson, Per-Olof Brandt
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Publication number: 20050122164Abstract: RF polar modulation circuit has a self-compensated temperature stable envelope controller and self-compensated temperature stable power amplifier bias. The circuit has an adaptive current-to-voltage modulation interface with pre-distortion compensation capability. AM/PM distortion are compensated for envelope dependent power amplifier transistor biasing. Automatic compensation is provided for RF loads that are higher or lower than nominal loads. This Abstract is provided to comply with rules requiring an Abstract that allows a searcher or other reader to quickly ascertain subject matter of the technical disclosure. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.Type: ApplicationFiled: June 17, 2004Publication date: June 9, 2005Inventors: Per-Olof Brandt, Jonas Persson
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Publication number: 20050044298Abstract: A method for scheduling of periodic real time processes in an operating system, comprising the steps of defining a reference point in time for a periodic real time process, and scheduling the periodic real time process from said reference point in time. Preferably a future point in time is defined as said reference point in time at the start up of the operating system. Said real time process is preferably a periodic control process during which a relative control point in time, counted from the beginning of the subsequent control cycle, is calculated during each cycle with absolute time correction counted from said reference point in time. Said absolute time correction corresponds to the period of the periodic process multiplied with the number of passed control periods until said beginning of the subsequent control cycle, at which said absolute control point in time is calculated through an addition of said relative control point in time with said absolute time correction.Type: ApplicationFiled: September 18, 2002Publication date: February 24, 2005Inventor: Jonas Persson
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Publication number: 20040183594Abstract: The present invention presents an improved power control scheme for RF power amplifiers. The gain control signal used to control the power amplifier is subjected to pre-distortion (Hpre) before being supplied to the power amplifier, in order to reduce variations in control loop gain.Type: ApplicationFiled: March 17, 2004Publication date: September 23, 2004Inventor: Jonas Persson