Patents by Inventor Stefan Lundberg

Stefan Lundberg 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).

  • Publication number: 20140063342
    Abstract: A method for de-interlacing interlaced video includes receiving a first video field and a second video field, generating a first video frame by inserting the first video field in the first video frame on every second line of the first video frame, and by inserting a first synthesized video field on the lines of the first video frame not populated by the first video field. The video data of the first synthesized video field is based on video data of the first and second video fields. A second video frame is generated by inserting the second video field in the first video frame on every second line of the second video frame and by inserting a second synthesized video field on the lines of the second video frame not populated by the second video field. Two de-interlaced video frames are output for every received interlaced video frame.
    Type: Application
    Filed: August 14, 2013
    Publication date: March 6, 2014
    Applicant: AXIS AB
    Inventor: Stefan LUNDBERG
  • Publication number: 20130002864
    Abstract: Performance control of a video monitoring system (100) is described. The system (100) comprises system units including at least one camera (114) and a performance control station (120). A method comprises providing, in the performance control station (120), a visual output signal. Image data that have been recorded by a first camera (114) are then obtained, and the obtained image data is analyzed in relation to the visual output signal. The analysis results in a performance indicator for the system (100). Depending on the performance indicator, a performance control action associated with the system (100) is then performed by the performance control station (120).
    Type: Application
    Filed: June 11, 2012
    Publication date: January 3, 2013
    Applicant: Axis AB
    Inventor: Stefan Lundberg
  • Publication number: 20120320979
    Abstract: A method is used for encoding digital video data corresponding to a sequence of original input video frames. The method comprises: encoding a first original input video frame into an INTER-frame; decoding and reconstructing said INTER-frame into a reference frame; creating an INTRA input frame comprising information from both a second original input video frame and said reference frame; and encoding said INTRA input frame into an INTRA-frame. A digital video encoder system is used for encoding digital video data corresponding to a sequence of original input video frames by encoding the sequence of original input video frames using INTRA- and INTER-mode.
    Type: Application
    Filed: June 8, 2012
    Publication date: December 20, 2012
    Applicant: AXIS AB
    Inventor: Stefan LUNDBERG
  • Publication number: 20120307046
    Abstract: Methods and apparatus, including cameras and computer program products, implementing and using techniques for determining a temperature of a distant object in several temperature measurement points. A thermal image sensor measures thermal radiation from a distant object in several thermal measurement points on the object. A distance determination device includes an image sensor and calculates a distance to the object in several distance measurement points. A thermal image indicating an amount of thermal radiation from each thermal measurement point on the object is captured by the thermal image sensor. Reflected light from the object is captured by the image sensor. Several distances are calculated using the captured light. Each distance indicates a distance from the image sensor to a distance measurement point on the object. The data from the thermal image and the calculated distances are combined to determine a temperature in several temperature measurement points on the object.
    Type: Application
    Filed: May 2, 2012
    Publication date: December 6, 2012
    Applicant: Axis AB
    Inventor: Stefan LUNDBERG
  • Patent number: 8307214
    Abstract: A method for restricting access to media data generated by a camera comprising: setting a non-public initial user key, KICU, in the camera, providing a user client with the initial user key, KICU, establishing an authenticated relation between the user client and the camera by sending an authentication message including information based on the initial user key, KICU, from the user client to the camera, checking if an operational user key (KOCU) is set in the camera, and performing, in response to the act of checking if the operational user key (KOCU) is set in the camera, the acts a)-d) only if the operational user key (KOCU) is not set: a) acquiring an operational user key (KOCU), b) setting the operational user key (KOCU) in the camera, c) sending the operational user key (KOCU) to the user client, and d) indicating in the camera that the operational user key (KOCU) is set.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: November 6, 2012
    Assignee: Axis AB
    Inventors: Stefan Lundberg, Christian Gehrmann, Joacim Tullberg, Fredrik Ternerot
  • Publication number: 20120249866
    Abstract: A pan-tilt camera is arranged to include a camera head, a stationary unit, an intermediate member arranged between the camera head and the stationary unit, a first rotary joint rotatably connecting the camera head to the intermediate member, and a second rotary joint, rotatably connecting the intermediate member to the stationary unit. A communication path is provided between the camera head and the stationary unit, including an optical waveguide arranged between the camera head and the stationary unit. The optical waveguide has a first end positioned at the first rotary joint to receive light from the camera head through the first rotary joint. The other end of the waveguide is positioned at the second rotary joint and is arranged to send light to the stationary unit through the second rotary joint.
    Type: Application
    Filed: October 5, 2010
    Publication date: October 4, 2012
    Applicant: AXIS AB
    Inventors: Carl-Axel Alm, Stefan Lundberg, Willy Sagefalk
  • Publication number: 20120243861
    Abstract: A dome window for a surveillance camera device includes a first section and a second section. The first section is joined to the second section along a joint in which a joint end of the first section is attached to a joint end of the second section. A light absorber is arranged in or on the joint.
    Type: Application
    Filed: March 23, 2012
    Publication date: September 27, 2012
    Applicant: AXIS AB
    Inventors: Sven Svensson, Stefan Lundberg
  • Patent number: 8208033
    Abstract: The present invention relates to a network enabled digital video camera arranged to be connected to a digital network. The network enabled digital video camera includes a digital network module arranged to transmit and receive digital signals, an input/output port being an electrical connector and being connected to the digital network module, and an analog video generator arranged to output an analog video signal. The input/output port connected to the digital network module is also connected to the analog video generator. The present invention also relates to an adaptor used to connect the network enabled digital video camera to an off-the-shelf video preview device.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: June 26, 2012
    Assignee: Axis AB
    Inventors: Stefan Lundberg, Jon Hansson
  • Publication number: 20120154583
    Abstract: A system and device perform a method for monitoring the accessibility of an emergency exit, which includes illuminating an area in front of the emergency exit by emitting light, detecting reflected light from the illuminated area using an image sensor, calculating a plurality of distances based on the detected reflected light for discrete positions in the image sensor, comparing the each of the plurality of distances with a predetermined distance, and generating an alarm signal if the comparing indicates a substantial difference in distance in at least one position in the image sensor.
    Type: Application
    Filed: December 19, 2011
    Publication date: June 21, 2012
    Applicant: AXIS AB
    Inventors: Stefan Lundberg, Carl-Axel Alm
  • Publication number: 20110016319
    Abstract: A method for restricting access to media data generated by a camera comprising: setting a non-public initial user key, KICU, in the camera, providing a user client with the initial user key, KICU, establishing an authenticated relation between the user client and the camera by sending an authentication message including information based on the initial user key, KICU, from the user client to the camera, checking if an operational user key (KOCU) is set in the camera, and performing, in response to the act of checking if the operational user key (KOCU) is set in the camera, the acts a)-d) only if the operational user key (KOCU) is not set: a) acquiring an operational user key (KOCU), b) setting the operational user key (KOCU) in the camera, c) sending the operational user key (KOCU) to the user client, and d) indicating in the camera that the operational user key (KOCU) is set.
    Type: Application
    Filed: June 23, 2010
    Publication date: January 20, 2011
    Applicant: AXIS AB
    Inventors: Stefan Lundberg, Christian Gehrmann, Joacim Tullberg, Fredrik Ternerot
  • Publication number: 20100119221
    Abstract: A camera assembly includes a camera arranged to be panable and tiltable, and a transparent view port cover. The transparent view port cover includes a first part and a second part arranged together to present different angles of view to the camera, the second part having a lens.
    Type: Application
    Filed: November 10, 2009
    Publication date: May 13, 2010
    Applicant: AXIS AB
    Inventor: Stefan Lundberg
  • Publication number: 20100064029
    Abstract: A network connector device and a method for making image information sent through a first digital network accessible by a second digital network. A first and a second network connector are arranged to pass on digital network traffic, a network traffic buffer buffers the digital network traffic, an image session identifier identifies a network session from the buffered digital network traffic, containing image information. An image session tracker tracks the identified network session containing image information, an image extractor extracts image information from the identified network session containing image information, and an image information buffer buffers the extracted image information. An image information arranger arranges the image information from the image information buffer into at least one image sequence of related images, and a server makes accessible the at least one image sequence via a third network connector.
    Type: Application
    Filed: September 9, 2009
    Publication date: March 11, 2010
    Applicant: AXIS AB
    Inventors: Stefan Lundberg, Joacim Tullberg
  • Publication number: 20100007750
    Abstract: The present invention relates to a network enabled digital video camera arranged to be connected to a digital network. The network enabled digital video camera includes a digital network module arranged to transmit and receive digital signals, an input/output port being an electrical connector and being connected to the digital network module, and an analog video generator arranged to output an analog video signal. The input/output port connected to the digital network module is also connected to the analog video generator. The present invention also relates to an adaptor used to connect the network enabled digital video camera to an off-the-shelf video preview device.
    Type: Application
    Filed: July 9, 2009
    Publication date: January 14, 2010
    Applicant: AXIS AB
    Inventors: Stefan Lundberg, Jon Hansson
  • Patent number: 7525576
    Abstract: A camera is disclosed which includes: at least two image sensors, an image sensor selector, a multiplexer and an image processor. The at least two image sensors are configured to synchronously output successive pixels of image data. The image sensor selector is responsive to a pan and/or tilt signal input associated with a target view of the image data provided by the at least two image sensors, to output a select signal indicating for each synchronous output of pixels from the at least two image sensors a selected one of the at least two image sensors delivering a pixel within the target view. The multiplexer has inputs, an output, and a control input. The multiplexer inputs are each coupled to a corresponding one of the at least two image sensors to receive the successive pixels of image data there from.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: April 28, 2009
    Assignee: Axis, AB
    Inventors: Per Kannermark, Stefan Lundberg
  • Patent number: 7505635
    Abstract: The invention relates to a method and a system for digitally processing of frequently updated images from a camera. The system comprises at least one camera (2), at least one display unit, a network (6) for connecting the at least one camera with at least one display unit, and an image processing means (30). The image processing means comprises means for defining a first scaling area and a peripheral scaling area, which is enclosing the first scaling area, within an acquired digital image, and means for scaling the peripheral scaling area differently than the first scaling area so that the peripheral scaling area is downscaled in relation to the first scaling area, wherein the first scaling area is uniformly scaled in both a vertical and a horizontal direction.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: March 17, 2009
    Assignee: Axis AB
    Inventors: Carl-Axel Alm, Gunnar Dahlgren, Per Kannermark, Stefan Lundberg
  • Patent number: 7268834
    Abstract: Method and apparatus for combining a first video signal and a second video signal. The method comprising the act of replacing data in the second video signal with corresponding, in respect of a position within an image, data from the first video signal when said data in the second video signal represent a predefined repetitive pattern.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: September 11, 2007
    Assignee: Axis, AB
    Inventors: Stefan Lundberg, Gunnar Dahlgren
  • Patent number: 7131022
    Abstract: A timing generator comprising a programmable program memory that is arranged to comprise program instructions for controlling the generation of timing signals, a timing generator controller for processing the program instructions from the program memory, and an output timing signal controller. The output timing signal controller is connected to the timing generator controller for reception of control data and a timing signal specification that determine the appearance of said timing signals. The output timing signal controller is arranged to provide a plurality of output timing signals. The timing generator controller includes a decoder for decoding program instructions from the memory. An imaging device comprising an image sensor, an analogue image processor, an analogue to digital (A/D) converter, and a timing generator, according to the description given above, providing timing signals to the image sensor, the analogue image processor and the A/D converter.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: October 31, 2006
    Assignee: Axis AB
    Inventors: Gunnar Dahlgren, Per Kannermark, Stefan Lundberg
  • Patent number: 6963375
    Abstract: A digital camera has a plurality of fields of view combined with a panning and/or tilting functionality. The camera comprises: a camera housing (6) with an optical input (5), such as a lens or objective. The camera also has an image capturing unit for producing a digital image from light received through the optical input, a controller, a mirror (1) having a first plane surface (12) and a second curved surface (13), and a driving device (7) coupled to the mirror and adapted to rotate the mirror to a first position, where the first plane surface is inserted into an optical path (31) of the digital camera, thereby providing a first field of view of the digital camera. The driving device is also adapted to rotate the mirror to a second position, where the second curved surface is inserted into the optical path of the digital camera, thereby providing a second field of view of the digital camera.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: November 8, 2005
    Assignee: Axis, AB
    Inventor: Stefan Lundberg
  • Publication number: 20040196378
    Abstract: A camera is disclosed which includes: at least two image sensors, an image sensor selector, a multiplexer and an image processor. The at least two image sensors are configured to synchronously output successive pixels of image data. The image sensor selector is responsive to a pan and/or tilt signal input associated with a target view of the image data provided by the at least two image sensors, to output a select signal indicating for each synchronous output of pixels from the at least two image sensors a selected one of the at least two image sensors delivering a pixel within the target view. The multiplexer has inputs, an output, and a control input. The multiplexer inputs are each coupled to a corresponding one of the at least two image sensors to receive the successive pixels of image data there from.
    Type: Application
    Filed: February 13, 2004
    Publication date: October 7, 2004
    Applicant: Axis AB., A Swedish Corporation
    Inventors: Per Kannermark, Stefan Lundberg
  • Publication number: 20040183949
    Abstract: Method and apparatus for combining a first video signal and a second video signal. The method comprising the act of replacing data in the second video signal with corresponding, in respect of a position within an image, data from the first video signal when said data in the second video signal represent a predefined repetitive pattern.
    Type: Application
    Filed: February 4, 2004
    Publication date: September 23, 2004
    Inventors: Stefan Lundberg, Gunnar Dahlgren