Patents by Inventor Carl-Axel Alm

Carl-Axel Alm 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).

  • Patent number: 11967002
    Abstract: A method for anonymizing a digital colour image comprising obtaining the digital colour image, and applying a linear random function to a respective colour vector representing colour components of a respective pixel of the digital colour image to obtain a monochrome image. The linear random function varies over the pixels of the digital colour image, and is further dependent on at least one random parameter.
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: April 23, 2024
    Assignee: AXIS AB
    Inventors: Carl-Axel Alm, Håkan Ardö, Raphael Teller, Song Yuan, Tim Borglund
  • Publication number: 20240003783
    Abstract: A technique to monitor the operation of a lubrication apparatus, which is connected to provide a pulsating flow of lubricant on a lubrication path to a lubrication point of a machine. A monitoring system includes a pressure sensor configured to provide a pressure signal representing measured fluid pressure in the lubrication path, and a calculation arrangement configured to process pressure data in the pressure signal for detection of pulses, and to determine an operating status of the lubrication apparatus based on the detected pulses. The system may be installed with minimum modification of existing lubrication systems and is capable of detecting over- and under-lubrication based on the number of detected pulses, quantifying lubrication per unit time, estimating remaining lubricant in a lubricant supply, etc.
    Type: Application
    Filed: June 22, 2023
    Publication date: January 4, 2024
    Inventors: Stefan LUNDBERG, Patrik MADSEN, Carl Axel ALM
  • Patent number: 11825241
    Abstract: There is provided a camera and a method therein for facilitating installation of the camera. The method comprises capturing a video stream of a scene when the camera is installed with a first FOV, which scene comprises an object. A size in the video stream of at least one part of the object is estimated. As long as the estimated size is above a first threshold and below a second threshold, providing a first, edge-filtered, version of the video stream to secure privacy of the object. In response to the estimated size being above the second threshold indicating that the privacy is at risk of being revealed, entering an enhanced secure privacy mode comprising generating an alert to prompt an installer to re-install the camera with a second FOV different from the first FOV, and disabling provision of the first, edge-filtered, version of the video stream.
    Type: Grant
    Filed: November 11, 2021
    Date of Patent: November 21, 2023
    Assignee: Axis AB
    Inventors: Stefan Lundberg, Carl-Axel Alm
  • Publication number: 20220201253
    Abstract: There is provided a camera and a method therein for facilitating installation of the camera. The method comprises capturing a video stream of a scene when the camera is installed with a first FOV, which scene comprises an object. A size in the video stream of at least one part of the object is estimated. As long as the estimated size is above a first threshold and below a second threshold, providing a first, edge-filtered, version of the video stream to secure privacy of the object. In response to the estimated size being above the second threshold indicating that the privacy is at risk of being revealed, entering an enhanced secure privacy mode comprising generating an alert to prompt an installer to re-install the camera with a second FOV different from the first FOV, and disabling provision of the first, edge-filtered, version of the video stream.
    Type: Application
    Filed: November 11, 2021
    Publication date: June 23, 2022
    Applicant: Axis AB
    Inventors: Stefan LUNDBERG, Carl-Axel ALM
  • Publication number: 20220182591
    Abstract: An image processing device a camera and a method for of encoding images captured by a camera are disclosed. For each image of an image sequence captured by the camera, the image is pre-processed by filtering the image by applying a privacy filter, the privacy filter being configured to distort the image in such a way that privacy is achieved in the filtered image, and, for at least a subset of the filtered images, by colour revising the filtered image by changing colour of pixels of a plurality of scattered areas of the filtered image such that a respective colour of one or more pixels of each area of the plurality of scattered areas represents one or more original colours of one or more pixels before filtering at a location of that area in the filtered image. The pre-processed images are then encoded into an encoded video stream.
    Type: Application
    Filed: November 17, 2021
    Publication date: June 9, 2022
    Applicant: Axis AB
    Inventors: Carl-Axel ALM, Stefan LUNDBERG
  • Patent number: 11323647
    Abstract: The present invention discloses a method of injecting additional data in one or more image sensor frames in an image sensor device. The method comprises: providing (801) additional data in the form of a numeric sequence, controlling (802) the lengths of subsequent blanking intervals in one or more image sensor frames to represent the numeric sequence, and transmitting the one or more image sensor frames from the image sensor device. The one or more image sensor frames may be transmitted to an image processor (12, 72). Examples of image processors (12, 72) and a system (1, 7) comprising an image processor (12, 72) are also disclosed.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: May 3, 2022
    Assignee: AXIS AB
    Inventor: Carl-Axel Alm
  • Publication number: 20210409573
    Abstract: A method for anonymizing a digital colour image comprising obtaining the digital colour image, and applying a linear random function to a respective colour vector representing colour components of a respective pixel of the digital colour image to obtain a monochrome image. The linear random function varies over the pixels of the digital colour image, and is further dependent on at least one random parameter.
    Type: Application
    Filed: June 17, 2021
    Publication date: December 30, 2021
    Applicant: Axis AB
    Inventors: Carl-Axel ALM, Håkan ARDÖ, Raphael TELLER, Song YUAN, Tim BORGLUND
  • Publication number: 20210195133
    Abstract: The present invention discloses a method of injecting additional data in one or more image sensor frames in an image sensor device. The method comprises: providing (801) additional data in the form of a numeric sequence, controlling (802) the lengths of subsequent blanking intervals in one or more image sensor frames to represent the numeric sequence, and transmitting the one or more image sensor frames from the image sensor device. The one or more image sensor frames may be transmitted to an image processor (12, 72). Examples of image processors (12, 72) and a system (1, 7) comprising an image processor (12, 72) are also disclosed.
    Type: Application
    Filed: October 15, 2020
    Publication date: June 24, 2021
    Applicant: Axis AB
    Inventor: Carl-Axel ALM
  • Patent number: 10554488
    Abstract: A device and method for providing additional functionality to an apparatus having a network connector by which the apparatus is configured to be connected to a network and to be allocated an identifier in the network, wherein the device is adapted to be connected between the network and the apparatus, wherein the device is configured to communicate with the network using a first network portion, wherein the device is configured to communicate with the apparatus using a second network portion, wherein logic circuitry of the device is accessible in the network via the apparatus using the second network portion. The device may be found in a system.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: February 4, 2020
    Assignee: Axis AB
    Inventors: Anil Kumar Metla, Carl-Axel Alm, Stefan Lundberg
  • Publication number: 20180343163
    Abstract: A device and method for providing additional functionality to an apparatus having a network connector by which the apparatus is configured to be connected to a network and to be allocated an identifier in the network, wherein the device is adapted to be connected between the network and the apparatus, wherein the device is configured to communicate with the network using a first network portion, wherein the device is configured to communicate with the apparatus using a second network portion, wherein logic circuitry of the device is accessible in the network via the apparatus using the second network portion. The device may be found in a system.
    Type: Application
    Filed: May 23, 2018
    Publication date: November 29, 2018
    Applicant: Axis AB
    Inventors: Anil Kumar Metla, Carl-Axel Alm, Stefan Lundberg
  • Patent number: 10084972
    Abstract: The present application relates to methods and systems for including sensor data from a sensor unit (108) as an overlay (204) in a video stream from a camera (106) monitoring a scene (200). The overlay has overlay regions (206a-f) corresponding to scene regions (202a-f), and when the sensor unit detects motion in a scene region a graphical element (208) is added to the overlay in the overlay region corresponding to that scene region. Video analytics procedures, such as object feature detection or motion or change detection may then be used to determine if detection has been made in a specific scene region by both the camera and the sensor unit.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: September 25, 2018
    Assignee: Axis AB
    Inventors: Carl-Axel Alm, Stefan Lundberg, Johan Wennersten
  • Publication number: 20160119553
    Abstract: The present application relates to methods and systems for including sensor data from a sensor unit (108) as an overlay (204) in a video stream from a camera (106) monitoring a scene (200). The overlay has overlay regions (206a-f) corresponding to scene regions (202a-f), and when the sensor unit detects motion in a scene region a graphical element (208) is added to the overlay in the overlay region corresponding to that scene region. Video analytics procedures, such as object feature detection or motion or change detection may then be used to determine if detection has been made in a specific scene region by both the camera and the sensor unit.
    Type: Application
    Filed: October 20, 2015
    Publication date: April 28, 2016
    Applicant: Axis AB
    Inventors: Carl-Axel ALM, Stefan LUNDBERG, Johan WENNERSTEN
  • Patent number: 9219850
    Abstract: A monitoring camera includes a camera lens, an image sensor, and a housing enclosing the image sensor. The housing encloses a volume of Phase Changing Material (PCM) having the characteristic of not beginning a phase change until its temperature rises above a predetermined phase changing temperature. The phase changing temperature is in the range of 20-80 degrees Celsius, and the PCM is arranged to enclose the camera lens.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: December 22, 2015
    Assignee: AXIS AB
    Inventors: Carl-Axel Alm, Viktor Gustafsson, Stefan Lundberg, Mikael Persson
  • Patent number: 9007474
    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: Grant
    Filed: February 13, 2014
    Date of Patent: April 14, 2015
    Assignee: AXIS AB
    Inventors: Carl-Axel Alm, Stefan Lundberg, Willy Sagefalk
  • Patent number: 8908032
    Abstract: Surveillance camera comprising a camera housing and a transparent view port cover, the camera housing including a top surface and a side surface, the side surface is extending along the periphery of the top surface is connected to the top surface, the transparent view port cover is asymmetrically arranged on the camera housing, is arranged to cover an opening in the camera housing, is curved, and is protruding over the top surface of the camera housing.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: December 9, 2014
    Assignee: Axis AB
    Inventors: Morten Bergström, Carl-Axel Alm, Mathias Walter
  • Patent number: 8848065
    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: Grant
    Filed: October 5, 2010
    Date of Patent: September 30, 2014
    Assignee: Axis AB
    Inventors: Carl-Axel Alm, Stefan Lundberg, Willy Sagefalk
  • Publication number: 20140160308
    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: February 13, 2014
    Publication date: June 12, 2014
    Applicant: AXIS AB
    Inventors: Carl-Axel ALM, Stefan LUNDBERG, Willy SAGEFALK
  • Patent number: 8749702
    Abstract: The invention relates to a network camera comprising an image acquisition part, an image processing part, a flat cable connecting the image acquisition part with a first end of the image processing part, and an inlet for an external data cable arranged at a second end of the image processing part. The image acquisition part is tiltable around a first axis in relation to the image processing part, the image processing part and the image acquisition part in combination are rotatable around a second axis, and the first and second axes are essentially perpendicular to each other.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: June 10, 2014
    Assignee: Axis AB
    Inventor: Carl-Axel Alm
  • Patent number: 8537549
    Abstract: A housing for an electronic device. The housing includes a first shell at least partly enclosing the electronic device, a second shell, and at least a first fan. The first shell is arranged to allow a gaseous fluid to surround the electronic device. The second shell at least partly encloses the first shell, and is arranged in relation to the first shell such that the gaseous fluid may be present between the shells. The at least first fan is arranged in an opening of the first shell such that it is capable of providing a flow of the gaseous fluid through the opening in the first shell of the gaseous fluid to the second shell and thereby provide heat transport from the electronic device to the second shell.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: September 17, 2013
    Assignee: Axis AB
    Inventors: Carl-Axel Alm, Magnus Sjoberg, Samir Helaoui
  • Patent number: D691646
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: October 15, 2013
    Assignee: Axis AB
    Inventors: Morten Bergström, Carl-Axel Alm, Mathias Walter, Jan Ryzak, Henrik Persson