Patents by Inventor Erik Persson
Erik 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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Publication number: 20110080959Abstract: A video data processing apparatus is provided comprising processing circuitry for performing video processing operations requiring access to video reference frames, and a memory management unit configured to translate virtual addresses into physical addresses. Translation circuitry is provided responsive to a memory access request for reference frame pixel data issued by the processing circuitry to perform a translation process on video reference frame information such that the set of input values for at least one hash function in the memory management unit comprises video reference frame identifier bits contained with the video reference frame information. This approach has been found to reduce the frequency of aliasing in the memory management unit when retrieving video reference frames.Type: ApplicationFiled: October 7, 2010Publication date: April 7, 2011Applicant: ARM LIMITEDInventors: Andreas Björklund, Erik Persson, Pontus Borg, Mats Petter Wallander
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Publication number: 20110013699Abstract: A video processing apparatus and method are provided, the video processing apparatus comprising first stage video processing circuitry and second stage video processing circuitry. The first stage video processing circuitry receives input video data and performs one or more processing operations on the input video data to generate an intermediate representation of the input video data. The intermediate representation comprises first and second separate data portions, with the first data portion containing transient data derived from the input video data and the second data portion containing long term data derived from the input video data. Transient data is only required for processing of a single video frame, whilst the long term data is required for processing of at least two video frames.Type: ApplicationFiled: July 14, 2010Publication date: January 20, 2011Applicant: ARM LIMITEDInventors: Erik Persson, Tomas Edsö
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Publication number: 20100312988Abstract: A data processing apparatus and method and provided for handling vector instructions. The data processing apparatus has a register data store with a plurality of registers arranged to store data elements. A vector processing unit is then used to execute a sequence of vector instructions, with the vector processing unit having a plurality of lanes of parallel processing and having access to the register data store in order to read data elements from, and write data elements to, the register data store during the execution of the sequence of vector instructions. A skip indication storage maintains a skip indicator for each of the lanes of parallel processing. The vector processing unit is responsive to a vector skip instruction to perform an update operation to set within the skip indication storage the skip indicator for a determined one or more lanes.Type: ApplicationFiled: January 19, 2010Publication date: December 9, 2010Applicant: ARM LIMITEDInventors: Andreas BJÖRKLUND, Erik Persson, Ola Hugosson
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Publication number: 20100313060Abstract: A data processing apparatus and method are provided for performing a predetermined rearrangement operation. The data processing apparatus comprises a vector register bank having a plurality of vector registers, with each vector register comprising a plurality of storage cells such that the plurality of vector registers provide a matrix of storage cells. Each storage cell is arranged to store a data element. A vector processing unit is provided for executing a sequence of vector instructions in order to apply operations to the data elements held in the vector register bank. Responsive to a vector matrix rearrangement instruction specifying a predetermined rearrangement operation to be performed on the data elements in the matrix of storage cells, the vector processing unit is arranged to issue a set rearrangement enable signal to the vector register bank.Type: ApplicationFiled: January 19, 2010Publication date: December 9, 2010Applicant: ARM LIMITEDInventors: Andreas Björklund, Erik Persson, Ola Hugosson
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Publication number: 20100283197Abstract: The invention relates to an arrangement (1) for conveying of sheets (2a, b), comprising upper and lower receiving rolls (3, 4), an upper belt element (5) and a receiving surface (6). The belt element (5) extends in a region above the receiving surface (6). The sheets (2a, b) are conveyed in a substantially horizontal direction of movement (7) towards the receiving rolls (3, 4), which receiving rolls (3, 4) during rotation move the sheets (2a, b) one after another between and past the receiving rolls (3, 4), during which the respective sheet (2a, b), after passing between and past the receiving rolls (3, 4), are situated between said receiving surface (6) and upper belt element (5). The sheets (2a , b) between the upper belt element (5) and the receiving surface (6) are placed on one another such that a rear edge (8) of a sheet (2a) passing through and between the receiving rolls (3, 4) is overlapped by a front edge (9) of a following sheet (2b).Type: ApplicationFiled: August 14, 2008Publication date: November 11, 2010Applicant: Lasermax Roll Systems ABInventors: Peter Benjaminson, Jan-Erik Persson
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Patent number: 7751642Abstract: An image processing method comprises receiving a raw color image as produced by an image sensor. A color image having a plurality of pixels is generated by processing raw image data from said raw color image, wherein pixels for which color values are absent in said raw image data are assigned color values derived from present color values in said raw image data. A sharpening term is generated by processing raw image data from said raw color image. Then, an improved color image is produced by combining said color image with said sharpening term. The raw color image may be a Bayer image, and the image processing method may be implemented in a cost and power efficient integrated circuit using limited memory.Type: GrantFiled: May 17, 2006Date of Patent: July 6, 2010Assignee: Arm LimitedInventor: Erik Persson
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Patent number: 6976815Abstract: A milling cutter includes a body having three cutting edges formed by the body. An end of the body situated opposite the cutting edges defines a fastening end of the milling cutter. Each cutting edge extends from an outer periphery of the body substantially to a center rotational axis of the body along a substantially convexly curved path. Radially outer and radially inner ends of each cutting edge are situated axially rearwardly of an axially foremost point of the cutting edge. Each cutting edge lies on a respective imaginary sphere having a radius which has a center which that is spaced from the cutting edge in a direction toward the fastening end and spaced radially from the center axis.Type: GrantFiled: February 4, 2004Date of Patent: December 20, 2005Assignee: Seco Tools ABInventors: Carl-Erik Berglöw, Mattias Puide, Sven-Erik Persson, Kurt Nordlund
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Publication number: 20040223817Abstract: A milling cutter includes a body having three cutting edges formed by the body. An end of the body situated opposite the cutting edges defines a fastening end of the milling cutter. Each cutting edge extends from an outer periphery of the body substantially to a center rotational axis of the body along a substantially convexly curved path. Radially outer and radially inner ends of each cutting edge are situated axially rearwardly of an axially foremost point of the cutting edge. Each cutting edge lies on a respective imaginary sphere having a radius which has a center which that is spaced from the cutting edge in a direction toward the fastening end and spaced radially from the center axis.Type: ApplicationFiled: February 4, 2004Publication date: November 11, 2004Applicant: SECO TOOLS AB.Inventors: Carl-Erik Berglow, Mattias Puide, Sven-Erik Persson, Kurt Nordlund
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Publication number: 20020048404Abstract: A system and a corresponding method for determining a spatial relationship between a surface having a predetermined pattern and an apparatus are disclosed. A portion of the surface may be imaged and compared with the predetermined pattern. The comparison produces at least one reference measurement that may be used to determine a spatial relationship expressed in at least parameters that define an orientation of the surface. By using knowledge of the predetermined pattern together with an algebraic model of the image formation by the apparatus, a numerical adaptation can be performed. Parameters obtained from the adaptation can then be used to calculate the spatial relationship between the apparatus and the surface in terms of, for example, a distance between the apparatus and the surface or an angle between the surface and an axis extending through the apparatus.Type: ApplicationFiled: March 21, 2001Publication date: April 25, 2002Inventors: Christer Fahraeus, Stefan Burstrom, Erik Persson, Mats Petter Pettersson
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Publication number: 20020004699Abstract: Systems and methods consistent with the present invention may include a surface for guiding a vehicle in an operating area. The surface may include a position-coding pattern having an arbitrary subset of a predetermined size. The subset may identify a unique position in the operating area. The vehicle may then determine its absolute position within the operating area by recording an image of the arbitrary subset on the surface. In addition, systems and methods consistent with the present invention may also include a self-guided vehicle for operation on a surface. A control means may control the movement of the vehicle. An image sensor may record an image of the surface having a position-coding pattern. The control means may then convert the recorded position-coding pattern into a position of the vehicle and then control the movement of the vehicle in response to the vehicle position.Type: ApplicationFiled: March 21, 2001Publication date: January 10, 2002Inventors: Christer Fahraeus, Erik Persson
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Patent number: 5864259Abstract: A measuring line for a coaxial conductor for determining energy throughflow and standing-wave ratio, comprising two coaxial connectors (2) having an impedance adapted for a coaxial conductor; an intermediate hollow conductor comprising an inner conductor (3) connected to the center conductor of the coaxial connectors and which is matched with that impedance; a directional coupler in the hollow conductor for taking-out two electric signals each corresponding to a respective propagation direction of electric waves between the coaxial connectors; and a detector circuit for respective electric signals. The directional coupler comprises a single directional coupler (4) which is mounted within the hollow conductor and parallel with its inner conductor (3) and which has symmetrically disposed branch lines (8) which are drawn through openings (9) in a wall of the hollow conductor and each of which extends to a respective strip conductor in a circuit board (10) mounted externally of the wall.Type: GrantFiled: June 3, 1997Date of Patent: January 26, 1999Assignee: LG Products ABInventor: Gunnar Erik Persson
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Patent number: 4819184Abstract: An industrial robot has a position controller for each one of the axes of the robot and a computer for control of the robot. The computer continuously determines, with the aid of a mathematical model set up in advance, in dependence on the robot configuration and load in question, the mass moment of inertia of the axes, the coupled mass moment of inertia, and the moment caused by gravity. From the relationships between acceleration/deceleration and the drive motor torque for the different axes, the maximum available acceleration/deceleration for the axis is determined while assuming that maximum motor torque prevails for each axis. For each axis this value is compared with the maximum acceleration/deceleration value that may be allowed from the point of view of stability. On the basis of the lower of these values, optimum gain is determined and set in the position controller and/or a path planning parameter.Type: GrantFiled: September 29, 1987Date of Patent: April 4, 1989Assignee: ASEA AktiebolagInventors: Sven Jonsson, Erik Persson, Lars stlund
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Patent number: 4448271Abstract: A roller cutter assembly for rotary boring of the face of earth formations comprising a boring head (16) and a plurality of roller cutters (14) mounted in mounting members (15). The bearing shafts (25) of the roller cutters (14) are secured to the mounting members (15) by members of clamping bolts (30). For purposes of eliminating the risk for failure of the clamping bolts (30) to occur the mounting members (15) are provided with a cap portion (31).Type: GrantFiled: November 13, 1981Date of Patent: May 15, 1984Assignee: Santrade Ltd.Inventor: Erik A. Persson
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Patent number: 4316553Abstract: Improvements in automatic lottery ticket vending machines adapted upon lottery ticket purchase to dispense one or a definite number of tickets at a time from an externally inaccessible portion of the interior of the vending machine.For the purpose of facilitating loading of the automatic lottery ticket vending machine so that the loading can be effected safer and at a more rapid rate, as well as to simplify the construction of the vending machines, the invention comprises at least one transport container for the tickets detachably connected to rotation means forming part of the automatic vending machine and adapted to rotate the container as a unit for mixing and dispensing the tickets.Type: GrantFiled: January 16, 1980Date of Patent: February 23, 1982Inventor: Frans-Erik Persson
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Patent number: 4304444Abstract: A rotary drill bit comprising at least one roller cutter (12) which is rotatably supported over bearing means (14, 15, 16) and provided with cutting means (13). The bearing means comprises a radial friction bearing (16) with a bearing element (25) of wear resistant material, such as hard metal. In order to improve the surface contact between the bearing element (25) and the inner bearing surface (27) in the roller cutter (12), and in order to remove impurities from the cooperating bearing surfaces a longitudinal groove (30) is provided in the bearing element (25). The fluid primarily supplied for flushing the groove (30) is secondarily used to cool the bearing element (25).Type: GrantFiled: March 12, 1980Date of Patent: December 8, 1981Assignee: Sandvik AktiebolagInventor: Erik A. Persson
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Patent number: 4295113Abstract: In a transformer or a reactor having at least one winding of foil-formed electrical conductor material, a magnetic-flux-controlling spirally-wound sheet of highly permeable ferro-magnetic material is arranged axially outside each end of the winding. The ends of the sheet are galvanically connected to the foil winding. By division of the magnetic material in the sheet, a high resistance in the longitudinal direction of the sheet, and thus lower losses, are obtained.Type: GrantFiled: August 11, 1980Date of Patent: October 13, 1981Assignee: Asea AktiebolagInventors: Anders Bjorklund, Erik Persson, Lars-Goran Virsberg
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Patent number: 4259654Abstract: Disclosed are improved constructions for power transformers and reactors having windings of tape-formed conductor material which tend to reduce additional losses in the windings. In the improved construction for a power transformer or reactor comprising a core containing magnetic material and having legs and a yoke and comprising windings including a tape-formed conductor material arranged concentrically around the core legs, the innermost of the windings has a first portion located nearest the core leg which has an axial length greater than the length of the portion of the winding located radially outside said first portion. The first portion thereby forms a cylindrical shield for controlling the magnetic leakage flux appearing outside the ends of the winding.Type: GrantFiled: April 30, 1979Date of Patent: March 31, 1981Assignee: ASEA AktiebolagInventors: Erik Persson, Johnny Sundin
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Patent number: 4180292Abstract: A plurality of cutter tool holders are mounted to a milling cutter head by tongue and groove connections. Each connection comprises a groove formed in the cutter head and a tongue formed on the tool holder. The groove has an undercut portion and an enlargement at one end. The tongue includes a projection which can be inserted into the enlargement and then into the undercut to prevent, via wedging action, dislodgement of the tool holder. The groove and tongue each includes a side wall which is straight along its height.Type: GrantFiled: February 27, 1978Date of Patent: December 25, 1979Assignee: Sandvik AktiebolagInventor: Erik A. Persson
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Patent number: 4103768Abstract: In a conveyor for conveying articles in a helically curved path, an endless conveyor belt is driven in a helically curved path between the circumferential surface of a cylindrical envelope and a rotary drum coaxially arranged in the envelope. One edge of the conveyor belt is supported by the circumferential surface of the envelope while the other edge of the conveyor belt is engaged between consecutive convolutions of an entraining belt which is passed around and driven by the drum at the rotation thereof so as to carry along the conveyor belt in its movement.Type: GrantFiled: December 7, 1976Date of Patent: August 1, 1978Assignee: Teknisk Konsult Sven Persson ABInventor: Sven Erik Persson