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).
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Patent number: 11967002Abstract: 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: GrantFiled: June 17, 2021Date of Patent: April 23, 2024Assignee: AXIS ABInventors: Carl-Axel Alm, Håkan Ardö, Raphael Teller, Song Yuan, Tim Borglund
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Publication number: 20240003783Abstract: 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: ApplicationFiled: June 22, 2023Publication date: January 4, 2024Inventors: Stefan LUNDBERG, Patrik MADSEN, Carl Axel ALM
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Patent number: 11825241Abstract: 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: GrantFiled: November 11, 2021Date of Patent: November 21, 2023Assignee: Axis ABInventors: Stefan Lundberg, Carl-Axel Alm
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Publication number: 20220201253Abstract: 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: ApplicationFiled: November 11, 2021Publication date: June 23, 2022Applicant: Axis ABInventors: Stefan LUNDBERG, Carl-Axel ALM
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Publication number: 20220182591Abstract: 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: ApplicationFiled: November 17, 2021Publication date: June 9, 2022Applicant: Axis ABInventors: Carl-Axel ALM, Stefan LUNDBERG
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Patent number: 11323647Abstract: 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: GrantFiled: October 15, 2020Date of Patent: May 3, 2022Assignee: AXIS ABInventor: Carl-Axel Alm
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Publication number: 20210409573Abstract: 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: ApplicationFiled: June 17, 2021Publication date: December 30, 2021Applicant: Axis ABInventors: Carl-Axel ALM, Håkan ARDÖ, Raphael TELLER, Song YUAN, Tim BORGLUND
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Publication number: 20210195133Abstract: 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: ApplicationFiled: October 15, 2020Publication date: June 24, 2021Applicant: Axis ABInventor: Carl-Axel ALM
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Patent number: 10554488Abstract: 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: GrantFiled: May 23, 2018Date of Patent: February 4, 2020Assignee: Axis ABInventors: Anil Kumar Metla, Carl-Axel Alm, Stefan Lundberg
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Publication number: 20180343163Abstract: 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: ApplicationFiled: May 23, 2018Publication date: November 29, 2018Applicant: Axis ABInventors: Anil Kumar Metla, Carl-Axel Alm, Stefan Lundberg
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Patent number: 10084972Abstract: 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: GrantFiled: October 20, 2015Date of Patent: September 25, 2018Assignee: Axis ABInventors: Carl-Axel Alm, Stefan Lundberg, Johan Wennersten
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Publication number: 20160119553Abstract: 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: ApplicationFiled: October 20, 2015Publication date: April 28, 2016Applicant: Axis ABInventors: Carl-Axel ALM, Stefan LUNDBERG, Johan WENNERSTEN
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Patent number: 9219850Abstract: 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: GrantFiled: February 28, 2013Date of Patent: December 22, 2015Assignee: AXIS ABInventors: Carl-Axel Alm, Viktor Gustafsson, Stefan Lundberg, Mikael Persson
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Patent number: 9007474Abstract: 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: GrantFiled: February 13, 2014Date of Patent: April 14, 2015Assignee: AXIS ABInventors: Carl-Axel Alm, Stefan Lundberg, Willy Sagefalk
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Patent number: 8908032Abstract: 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: GrantFiled: September 13, 2007Date of Patent: December 9, 2014Assignee: Axis ABInventors: Morten Bergström, Carl-Axel Alm, Mathias Walter
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Patent number: 8848065Abstract: 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: GrantFiled: October 5, 2010Date of Patent: September 30, 2014Assignee: Axis ABInventors: Carl-Axel Alm, Stefan Lundberg, Willy Sagefalk
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Publication number: 20140160308Abstract: 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: ApplicationFiled: February 13, 2014Publication date: June 12, 2014Applicant: AXIS ABInventors: Carl-Axel ALM, Stefan LUNDBERG, Willy SAGEFALK
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Patent number: 8749702Abstract: 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: GrantFiled: November 26, 2008Date of Patent: June 10, 2014Assignee: Axis ABInventor: Carl-Axel Alm
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Patent number: 8537549Abstract: 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: GrantFiled: October 27, 2009Date of Patent: September 17, 2013Assignee: Axis ABInventors: Carl-Axel Alm, Magnus Sjoberg, Samir Helaoui
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Patent number: D691646Type: GrantFiled: April 19, 2012Date of Patent: October 15, 2013Assignee: Axis ABInventors: Morten Bergström, Carl-Axel Alm, Mathias Walter, Jan Ryzak, Henrik Persson