Ahlen
Anders Ahlen, Knivsta SE
Patent application number | Description | Published |
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20090238380 | SPATIALLY ROBUST AUDIO PRECOMPENSATION - A discrete-time audio precompensation filter is designed based on a linear model that describes the dynamic response of a sound generating system at p>1 listening positions. The filter construction is based on providing information (S2) representative of n non-minimum phase zeros {z,} that are outside of the stability region |z|= | 09-24-2009 |
20140153744 | Audio Precompensation Controller Design Using a Variable Set of Support Loudspeakers - Disclosed is a method and a system to determine an audio precompensation controller for an associated sound generating system including a total of N≧2 loudspeakers, each having a loudspeaker input. The audio precompensation controller has a number L≧1 inputs for L input signals and N outputs for N controller output signals, one to each loudspeaker. For each one of at least a subset of the N loudspeaker inputs, an impulse response is estimated at each measurement position. For each one of the L input signal(s), a selected one of the N loudspeakers is specified as a primary loudspeaker and a selected subset S including at least one of the N loudspeakers as support loudspeaker(s). | 06-05-2014 |
20150131826 | AUDIO PRECOMPENSATION CONTROLLER DESIGN WITH PAIRWISE LOUDSPEAKER CHANNEL SIMILARITY - A method for determining an audio precompensation controller for an associated sound generating system comprising a total of N≧2 loudspeakers, each having a loudspeaker input. The audio precompensation controller has a number L≧2 inputs for L input signal(s) and N outputs for N controller output signals, one to each loudspeaker. It is relevant to: estimate (S | 05-14-2015 |
Carl Henrik Ahlen, Trondheim NO
Patent application number | Description | Published |
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20120145276 | PIPELINE WITH AN INTERNAL CORROSION RESISTANT METAL COATING - A pipeline comprising an outer steel pipe and an internal corrosion resistant covering adhesively joined to the inside of the steel pipe. The pipeline can be taken up onto a drum and later unwound and laid out without any observed deformation of the metal covering. A method for the manufacturing of the pipeline comprises the steps of applying an adhesive onto the outside of the metal covering and optionally also onto the inside of the steel pipe, inserting the metal covering into the pipe and expanding the covering until being in a good contact with the inside of the steel pipe, and curing the adhesive to make the metal covering adhere tightly to the inside of the steel pipe. | 06-14-2012 |
20140056648 | SUBSEA CABLE REPAIR - There is provided subsea repair apparatus for performing repair of a subsea cable located beneath the sea, said apparatus comprising: an environment capsule capable of providing a substantially water-free environment within the capsule; and repair equipment located within the environment capsule arranged to repair said subsea cable without the need for a person to be located within the environment capsule. | 02-27-2014 |
Lars H. Ahlen, Bloomington, MN US
Patent application number | Description | Published |
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20080253021 | Non-magnetic contact enhancement feature - A transducer having an external contact surface includes a writer and a contact member. The writer has a portion extendable beyond the external contact surface. The contact member surrounds at least a portion of the extendable writer portion. | 10-16-2008 |
20110058278 | HIGH STROKE EFFICIENCY AIR-BEARING DESIGN - This disclosure is directed to air-bearing sliders used in magnetic storage systems that employ a trench arranged between a transducing head connected to a slider body and a leading edge of the slider body. The trench is configured to divert air passing over an air-bearing surface of the slider body away from the transducing head. | 03-10-2011 |
20130000107 | Contact feature for use with transducing devices - A transducer having an external contact surface includes a writer and a contact member. The writer has a portion extendable relative to an adjacent portion of the external contact surface. The contact member surrounds at least a portion of the extendable writer portion and is spaced from the extendable writer portion. The coefficient of thermal expansion of the contact member is approximately equal to the coefficient of thermal expansion of the extendable writer portion. | 01-03-2013 |
Lena Ahlen, Austin, TX US
Patent application number | Description | Published |
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20150370955 | METHOD FOR ADJUSTING A TIMING DERATE FOR STATIC TIMING ANALYSIS - A static timing analysis method that determines an expected design condition surrounding a target cell in an integrated circuit design. A derate adjustment is determined based on the expected design condition for a target cell and a timing derate, representing variation in propagation delay for a default design condition, is then adjusted based on the derate adjustment. An expected timing of a signal path including the target cell is determined based on the adjusted timing derate. The derate adjustment may be determined based on simulated variance of the propagation delay through the target cell for the expected design condition. This approach avoids unnecessary optimism or pessimism in the timing derate, which reduces the number of false positive or false negative detections of timing violations in the static timing analysis. | 12-24-2015 |
Lena Ahlen, La Grange, TX US
Patent application number | Description | Published |
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20090184696 | VOLTAGE SOURCE FOR GATE OXIDE PROTECTION - An electronic circuit. The electronic circuit includes a first circuit leg coupled to a first supply voltage node and a second supply voltage node. The first circuit leg includes a first reference current circuit configured to produce a first reference current and a second reference current circuit configured to produce a second reference current. The electronic circuit further includes a second circuit leg coupled in parallel with the first circuit leg. The second circuit leg includes a first transistor coupled to form a current mirror with the first reference current circuit and a second transistor coupled to form a current mirror with the second reference current circuit. The source terminals of each of the first and second transistors are coupled together to form a third supply voltage node | 07-23-2009 |
Lennart Ahlen, Uppsala SE
Patent application number | Description | Published |
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20080278155 | System and Use Concerning Under Water Eddy Current Measurements on Components for Nuclear Reactors - The invention concerns a system suited for carrying out eddy current measurements on components for nuclear reactors when these components are located in water. The system comprises a control unit, a measurement probe and a first cable suited to constitute at least a part of the connection between the control unit and the measurement probe. The system also comprises a switching unit, suited to be located in water and arranged to be connected with said first cable, and to be connected with the measurement probe. The switching unit has a switching device which can assume at least a first and a second state. In the first state, the first cable is connected with the measurement probe. In the second state, the first cable is not connected with the measurement probe. The invention also concerns the use of the system. | 11-13-2008 |
Niklas Ahlen, Soderbarke SE
Patent application number | Description | Published |
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20090016831 | Fine Grained Cemented Carbide for Turning in Heat Resistant Super Alloys (HRSA) - Coated cemented carbide inserts, particularly useful in fine turning of super alloys, are disclosed. The inserts are characterized by a composition of a cemented carbide of WC, about 4.0 wt-% Co to about 7.0 wt-% Co, about 0.25 wt-% Cr to 0.50 wt-% Cr, and a coercivity (Hc) of about 28 kA/m to about 38 kA/m. The coating comprises a single (Ti | 01-15-2009 |
20110209590 | METHOD OF MAKING A COATED CEMENTED CARBIDE INSERT - Forming coated cemented carbide inserts, particularly useful in fine turning of super alloys. The inserts are characterized by a composition of a cemented carbide of WC, about 4.0 wt-% Co to about 7.0 wt-% Co, about 0.25 wt-% Cr to 0.50 wt-% Cr, and a coercivity (Hc) of about 28 kA/m to about 38 kA/m. The coating comprises a single (Ti | 09-01-2011 |
Steven P. Ahlen, Wellesley, MA US
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20140077091 | GLASS-PANEL LITHIUM-6 NEUTRON DETECTOR - A thermal neutron detector includes a planar detector housing having two glass panels spaced apart by a gas-tight seal defining a detection chamber including an inert detection gas and lithium foils adhered to inner surfaces of the glass panel(s). The lithium foils emit alpha particles and tritons in response to incident thermal neutrons, and the inert detection gas is ionized by the particles to generate drift electrons. A planar array of detection wires is spaced apart from the lithium foils and extends outside the detection chamber. Electronic bias applies a field voltage between the wires and the lithium foils to establish a drift electric field in the detection chamber effective to attract the drift electrons to the wires and provide a large electric field near the anode wires to cause electron multiplication near the wire resulting in large numbers of electrons and positive ions for each initial electron. Detection circuitry detects electric signals in wires generated by the drift of positive ions away from the wires and interpret the electrical signals as incidence of thermal neutrons on the detector. | 03-20-2014 |