公开(公告)号：US11232664B2

公开(公告)日：2022-01-25

申请号：US17231013

申请日：2021-04-15

Applicant: Axis AB

Inventor： Daniel Andersson ,  Ingemar Larsson

IPC: G07C9/27

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).

公开(公告)号：US10531058B2

公开(公告)日：2020-01-07

申请号：US16009247

申请日：2018-06-15

Applicant: Axis AB

Inventor： Jonas Hjelmström ,  Stefan Lundberg ,  Ingemar Larsson

IPC: H04N9/64 ,  H04N5/238 ,  H04N5/33 ,  H04N5/225 ,  H04N5/235 ,  H04N9/73 ,  H04N9/04

Abstract: A method and assembly produce color images of a scene captured by an image sensor exposed to visible light as well as IR radiation. A first image is captured with a first proportion of an iris aperture covered by an IR-cut filter. A first amount of radiation captured in the first image is determined and a second image captured with a second proportion of the iris covered by the IR-cut filter. A second amount of radiation captured in the second image is determined and a proportion of IR radiation is calculated in the scene based on the first amount of light, the second amount of light, the first IR-cut filter proportion, and the second IR-cut filter proportion. An IR contribution is removed from an image by using the calculated proportion of IR radiation.

公开(公告)号：US10685557B2

公开(公告)日：2020-06-16

申请号：US16579873

申请日：2019-09-24

Applicant: Axis AB

Inventor： Ingemar Larsson ,  Anders Hansson ,  Daniel Andersson

IPC: F21V23/00 ,  G08B25/14 ,  G08B25/10 ,  H04W4/90 ,  H04W4/33 ,  H04W4/029

Abstract: The present invention relates to an emergency notification system where indicators are mounted on or in a building in such a way that optical or thermal signals emitted from the indicators form a time-variant indication detectable outside the building of an emergency event taking place inside the building. Sensors detecting a predetermined sound are mounted inside the building and are each connected to a nearby indicator. When a sensor makes a detection, it sends event information to its associated indicator which will prompt the indicator to emit a first optical or thermal signal. Based on a signal from a timer connected to the indicator, a property of the first signal will change after a certain time has passed, thereby providing the time-variant indication.

公开(公告)号：US20170257377A1

公开(公告)日：2017-09-07

申请号：US15449365

申请日：2017-03-03

Applicant: Axis AB

Inventor： Einar Vading ,  Ingemar Larsson ,  Julius Borcea ,  Pia Hantoft ,  Johan Adolfsson ,  Robert Rosengren ,  Marcus Johansson ,  Emil Selinder

IPC: H04L29/06 ,  H04L29/08

CPC classification number: H04L63/104 ,  G06F21/604 ,  H04L63/108 ,  H04L67/22

Abstract: A method and a device for delegating access rights in a system which is configured to handle access rights of users to resources in the system is disclosed. The method comprises assigning a first access right to a first user; appointing a pool of one or more users serving as deputies for the first user; checking if the first user, during a predefined period of time, has refrained from performing a predefined activity with respect to the resources; and if so, delegating the first access right to a user in the pool.

公开(公告)号：US11682384B2

公开(公告)日：2023-06-20

申请号：US17182526

申请日：2021-02-23

Applicant: Axis AB

Inventor： Ingemar Larsson ,  Daniel Andersson

IPC: G10L15/16 ,  G06N3/08 ,  G08B23/00 ,  G10L25/30 ,  G10L25/51

CPC classification number: G10L15/16 ,  G06N3/08 ,  G08B23/00 ,  G10L25/30 ,  G10L25/51

Abstract: A method for training an alarm system to classify audio of an event, wherein the alarm system is connected to a neural network trained to classify audio as an event type, the method comprising the steps of: receiving audio recorded during a first period of time; transmitting the audio to an external unit; receiving data from the external unit indicating a sub-period of time of the audio and data indicating an event type of the indicated sub-period of time of the audio; and re-training the neural network by inputting a sub-period of the audio corresponding to the indicated sub-period of time of the audio and using the indicated event type as a correct classification of the sub-period of the audio.