Patents Assigned to Axis AB
  • Publication number: 20210366218
    Abstract: The present application concerns access control for controlling unlocking of a door (102) at the presentation of credentials (108) at the door. A credentials relay unit (112) and a lock controller (114) are mounted in the vicinity of the door. The credentials relay unit transmits received credentials to a pre-configured, first network address, and in addition transmits a wake-up signal (122) to the lock controller, which upon receipt of the wake-up signal will transmit a request (126) for instructions to a pre-configured, second network address. In response to the request, the lock controller receives unlocking or no-action instructions (128a, 128b), and in case unlocking instructions are received, the lock controller transmits an unlocking signal (132).
    Type: Application
    Filed: April 15, 2021
    Publication date: November 25, 2021
    Applicant: Axis AB
    Inventors: Daniel ANDERSSON, Ingemar LARSSON
  • Publication number: 20210358088
    Abstract: The present disclosure relates to a method performed by a background blurring system (1) for provision of a video compression stream from a video camera (2) adapted for capturing a scene. The background blurring system identifies (1001) in a first image of the scene, at a first point in time, at least a first pixel comprised in a background of the first image. The background blurring system further determines (1002) a blurred pixel value for the at least first pixel. Moreover, the background blurring system provides (1003), subsequent the first point in time, the blurred pixel value in the video compression stream. The background blurring system furthermore identifies (1004) in a second image of the scene, at a subsequent second point in time, that the at least first pixel has altered to be comprised in a foreground of the second image.
    Type: Application
    Filed: April 28, 2021
    Publication date: November 18, 2021
    Applicant: Axis AB
    Inventors: Stefan LUNDBERG, Song YUAN, Tim BORGLUND
  • Patent number: 11178401
    Abstract: A method of controlling output bitrate of a video encoder encoding a video sequence comprises: setting an allowable average bitrate, gathering encoding data by encoding video during a first time period and for each of a plurality of time intervals, storing a respective output bitrate, and a quantisation parameter used for encoding during the respective time interval. For each time interval, the output bitrate is normalised by calculating a corresponding normalised bitrate estimated for a predetermined nominal quantisation parameter as a function of the output bitrate and the quantisation parameter. An average normalised bitrate is calculated by averaging the normalised bitrates of the plurality of time intervals. A new quantisation parameter is calculated based on a comparison of the average normalised bitrate and the allowable average bitrate. The video sequence is encoded using the new quantisation parameter during a second time period subsequent to the first time period.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: November 16, 2021
    Assignee: Axis AB
    Inventors: Xing Danielsson Fan, Viktor Edpalm, Alexander Toresson
  • Patent number: 11175570
    Abstract: A mount for an image capturing device comprising a fixed frame, and a support frame arranged to support an image capturing device. The support frame is attached to the frame by a pivot joint defining a pivot axis for the support frame relative to the fixed frame, and an adjustment joint for adjusting a pivot position for the support frame comprising a first element forming a first contact surface, and a second element forming a second contact surface. The first element is arranged to be moved along a linear axis that traverses the pivot axis and that extends trough a plane of the contact surfaces. At least one of the contact surfaces is curved. The first and second elements are arranged to be magnetically connected during abutment. A system and method for adjustment are also disclosed.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: November 16, 2021
    Assignee: AXIS AB
    Inventors: Christoffer Arvidsson, David Fagerkvist
  • Patent number: 11178316
    Abstract: A monitoring camera having a compound window arranged in a frame of a camera housing, and a camera head arranged inside the housing, is disclosed. The compound window has an inner transparent plate, closest to the camera head, and an outer protective window, arranged in a plane parallel to the transparent plate, on an outside thereof, and the compound window further comprises a heating arrangement arranged and configured to supply thermal energy to peripheral areas of the transparent plate. The transparent plate has a greater heat conductivity than the protective window and is arranged in close proximity to the protective window, so thermal energy will be transferred from the heating arrangement to the transparent plate and then efficiently transferred to the protective window.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: November 16, 2021
    Assignee: AXIS AB
    Inventor: Akira Tagaya
  • Patent number: 11178339
    Abstract: A method for controlling an illuminator illuminating a scene monitored by a camera comprises determining whether an object of interest is present in the scene; upon at least one object of interest being determined to be present in the scene, setting a saturation threshold to a first value; or upon no object of interest being determined to be present in the scene, setting the saturation threshold to a second value being lower than the first value. The method further comprises identifying saturated pixels in an image of the scene captured by the camera; determining a ratio between a saturated area comprising the saturated pixels and a total area of the image; and upon the ratio being above the saturation threshold, decreasing a degree of illumination from the illuminator.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: November 16, 2021
    Assignee: AXIS AB
    Inventor: Shota Nakata
  • Publication number: 20210349179
    Abstract: A method for interference reduction between radar units. The method is performed by a radar unit and comprises: receiving one or more radar frames, wherein the one or more radar frames correspond to one or more respective time intervals during which the radar unit was activated to transmit and receive signals to produce data samples of the one or more radar frames; and determining whether the one or more radar frames have a higher presence of data samples that are subject to interference from other radar units in a first half of their corresponding time intervals than in a second, later, half of their corresponding time intervals. In case the presence is higher in the first half of their corresponding time intervals, a scheduled time interval of an upcoming radar frame to be produced by the radar unit is postponed, and otherwise it is advanced.
    Type: Application
    Filed: March 30, 2021
    Publication date: November 11, 2021
    Applicant: Axis AB
    Inventors: Adham SAKHNINI, Andreas GLATZ, Axel LANDGREN, Mattias SIMONSSON, Anders SKOOG, Anders MANNESSON, Sebastian HEUNISCH, Stefan ADALBJÖRNSSON, Karl NORDIN
  • Publication number: 20210351985
    Abstract: A networking arrangement is comprises a first network device for transmitting a data stream to a second network device over a network, the method comprises: transmitting a series of first packets to the second network device, each of the first packets having an transmission time and comprising a unique identification value, receiving, from the second network device, a second packet, the second packet indicating receipt of a least one of the first packets by the second network device, determining a standard round-trip time and determining a current round-trip time in dependence on a transmission time of an oldest first packet for which no indication of receipt has been received, and a receipt time of a most recently received second packet, determining an unused network bandwidth between the first network device and the second network device in dependence on the current round-trip time and standard round-trip time.
    Type: Application
    Filed: March 29, 2021
    Publication date: November 11, 2021
    Applicant: Axis AB
    Inventor: Jaroslav BERAN
  • Patent number: 11172124
    Abstract: A video processing comprises a video image processing pipeline and an encoder. The video image processing pipeline is processes images of captured video data and comprises: an image stream forming function which generates a first and second image streams each comprising a plurality of image frames, and an image stabilization function for image stabilizing the first image stream, thereby forming a stabilized image stream. The image stream forming function bypasses the second image stream from the image stabilization function, thereby forming an original image stream. The encoder encodes the stabilized image stream and the original image stream as a joint encoded image stream comprising encoded frames based on images frames from both the stabilized \the original image streams, wherein the joint encoded image stream comprises intra and inter frames, and wherein the intra frames are exclusively encoded based on image frames of the original image stream.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: November 9, 2021
    Assignee: AXIS AB
    Inventors: Johan Forberg, Hampus Linse, Song Yuan
  • Patent number: 11165995
    Abstract: A wearable form factor wireless camera may include an image sensor for capturing video, the image sensor powered by a battery internal to the wearable form factor wireless camera. The camera may be ruggedized and attached attach to clothing worn on a user. Further, the camera may include a burst transmission unit to transmit video via a cellular network, and include video analytics software executed by an internal processor, coupled to a buffering memory and powered by the battery. The camera may also include an internal storage device powered by the battery and configured to store video information at a first fidelity, the stored video information capable of being transmitted to a base station at the first fidelity and at a second fidelity. Also, the first fidelity may provide higher video quality than the second fidelity. The camera may switch the second fidelity to the first fidelity upon a trigger.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: November 2, 2021
    Assignee: AXIS AB
    Inventors: Jon Siann, Bradford S. Wallace
  • Patent number: 11164008
    Abstract: A method and a controller for controlling a video processing unit to facilitate detection of newcomers in a first environment. The method comprises: capturing a thermal image of a human object in the first environment, the first environment being associated with a first climate; calculating, based on the thermal image, a thermal signature of a portion of the human object; determining that the human object has entered the first environment from a second environment when the thermal signature of the portion of the human object deviates from a predetermined thermal signature associated with the first environment, wherein the second environment is associated with a second, different, climate; and controlling the video processing unit to prioritize the human object over other human objects when processing video frames depicting the human object together with the other human objects.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: November 2, 2021
    Assignee: Axis AB
    Inventors: Xing Danielsson Fan, Niclas Danielsson, Anton Jakobsson, Emanuel Johansson, Thomas Winzell, Jesper Bengtsson
  • Patent number: 11165998
    Abstract: A method of determining adjustment of an image pipeline setting comprises determining, by a controller, one or more settings for image data processing in the image pipeline; associating the one or more settings with a tag; transmitting the one or more settings to the image pipeline, wherein the tag is transmitted in association with the one or more settings; transmitting, from the image pipeline to the controller, feedback regarding image data processed with the one or more settings, wherein the tag is transmitted in association with the feedback; and determining, based on the received feedback and the one or more settings associated with the tag, an adjustment of the image pipeline setting.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: November 2, 2021
    Assignee: AXIS AB
    Inventors: Michael Evehammar, Andreas Johansson, Mikael Starvik, Stefan Ekenberg, Adam Schill Collberg, Henrik Fasth, Magnus Martensson, Martin Santesson
  • Patent number: 11165965
    Abstract: A method of assisting tilt angle adjustment of a thermal camera comprises arranging the thermal camera at an initial tilt angle, acquiring at least one thermal image by the thermal camera, determining, from the at least one thermal image, a series of sharpness indicators of image parts corresponding to vertically spaced parts of the camera view, identifying a maximum in the series of sharpness indicators, based on the identified maximum, determining a target sharpness indicator as a predetermined fraction of the identified maximum, during tilt angle adjustment, assisting by providing a target signal for indicating a target tilt angle of the thermal camera in which a sharpness indicator of a lower part of the camera's field of view equals the determined target sharpness indicator.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: November 2, 2021
    Assignee: AXIS AB
    Inventors: Thomas Winzell, Hongping Zhao, Anthony Hawkins
  • Publication number: 20210337123
    Abstract: Methods and apparatus, including computer program products, for selecting a cropping area in a sequence of images captured by a camera. First external motion data including data of external factors affecting movement of the camera is correlated with internal motion data describing a movement of the camera. The first external motion data and the internal motion data are obtained during a first time interval. Second external motion data is obtained during a second time interval subsequent to the first time interval. A sequence of images being captured during a third time interval is stabilized by selecting a cropping area based on the correlation and the second external motion data. The cropping area remains constant and maximized in size with respect to the field of view of the images during the third time interval. The third time interval is subsequent to, or partly overlapping with, the second time interval.
    Type: Application
    Filed: April 22, 2021
    Publication date: October 28, 2021
    Applicant: Axis AB
    Inventors: Johan NYSTRÖM, Song YUAN
  • Publication number: 20210337101
    Abstract: A system and method for electronic image stabilization for a high dynamic range image captured by a rolling shutter image sensor and more specifically to an algorithm configured to perform electronic image stabilization on the high dynamic range image, by, for each specific block of pixels among the blocks of pixels in the high dynamic range image, the specific block of pixels spatially corresponding to a pixel region of the rolling shutter image sensor, determining whether the specific block of pixels is copied from pixel data of the first image or the second image, or is a blend of pixel data from both the first image and the second image, and use motion data measured when capturing the first and second images for performing electronic image stabilization based on the origin of the specific block of pixels.
    Type: Application
    Filed: March 17, 2021
    Publication date: October 28, 2021
    Applicant: Axis AB
    Inventors: Song YUAN, Johan FÖRBERG
  • Publication number: 20210332843
    Abstract: A nut locking system comprising a nut, a shaft and a retaining ring, wherein the nut is connected to the shaft by means of a threaded joint, the shaft comprising a hollow section in which a body of the retaining ring is arranged, wherein the retaining ring comprises a tongue, the tongue being configured to engage the nut in response to movement of the nut relative the shaft in an axial direction thereof such that movement of the nut is restricted, wherein the tongue comprises a first tongue portion extending over an upper portion of the nut, the first tongue portion being configured to engage with the upper portion of the nut.
    Type: Application
    Filed: March 19, 2021
    Publication date: October 28, 2021
    Applicant: Axis AB
    Inventors: Johan BERGSTEN, Ola ANDERSSON, Christian JAKOBSSON, Kim NORDKVIST, Jakob HOLMQUIST
  • Patent number: D936128
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: November 16, 2021
    Assignee: AXIS AB
    Inventors: Alexander Rosenkvist, Jonas Sjögren, Markus Carlsson
  • Patent number: D936703
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: November 23, 2021
    Assignee: AXIS AB
    Inventor: Johan Forberg
  • Patent number: D936723
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: November 23, 2021
    Assignee: AXIS AB
    Inventors: Jonas Sjögren, Mattias Bognäs, Sebastian Engwall, Theodor Wahlgren
  • Patent number: D936724
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: November 23, 2021
    Assignee: AXIS AB
    Inventors: Jonas Sjögren, Mattias Bognäs, Sebastian Engwall, Theodor Wahlgren