Patents by Inventor Erik Dahlback

Erik Dahlback 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: 11200635
    Abstract: A video image processing pipeline controller is configured to control a bandwidth at which processing functions of a video image processing pipeline communicates, over one or more memory access channels, with a system memory. The controller is configured to, based on a current frame rate at which the video image processing pipeline produces a video stream and a target frame rate of the video image processing pipeline, reduce the bandwidth while securing that the current frame rate does not drop below the target frame rate, thereby reducing a peak power consumption of the video image processing pipeline. Also a video image processing system comprising the controller is disclosed as well as a method of reducing a peak power consumption in the video image processing pipeline.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: December 14, 2021
    Assignee: Axis AB
    Inventor: Erik Dahlback
  • Publication number: 20200051204
    Abstract: A video image processing pipeline controller is configured to control a bandwidth at which processing functions of a video image processing pipeline communicates, over one or more memory access channels, with a system memory. The controller is configured to, based on a current frame rate at which the video image processing pipeline produces a video stream and a target frame rate of the video image processing pipeline, reduce the bandwidth while securing that the current frame rate does not drop below the target frame rate, thereby reducing a peak power consumption of the video image processing pipeline. Also a video image processing system comprising the controller is disclosed as well as a method of reducing a peak power consumption in the video image processing pipeline.
    Type: Application
    Filed: August 12, 2019
    Publication date: February 13, 2020
    Applicant: Axis AB
    Inventor: Erik Dahlback
  • Publication number: 20150272395
    Abstract: A blender blade assembly having a first blade with two first blade arms extending from a centre plane in opposite directions, wherein each blade arm has a planar base section extending perpendicularly from the centre plane, wherein the base section merges at its outer end into a wing section angled upwards from the base section, and wherein the blade assembly further includes a second blade with two second blade arms, wherein each second blade arm have a curve shaped blade.
    Type: Application
    Filed: April 3, 2013
    Publication date: October 1, 2015
    Inventors: Erik Dahlbäck, Monica Rojas Restrepo, Brian Vines
  • Patent number: 7852824
    Abstract: In third generation mobile communications networks, e.g. CDMA systems, a mobile station intending to access a base station transmits a request for access to a base station and waits for a response in the form of an indicator signal. Both detecting a signal as an acknowledgement message without one being sent from the base station and failing to detect such an acknowledgement message can give rise to noise and interference in the whole cell. The invention provides a method and a user equipment for determining the received signal strength in an access slot in a downlink channel and for asserting whether detection of an indicator signal from the base station in the access slot in the downlink channel is reliable. Hereby, a more secure reception of indicator signals can be obtained, which leads to reduced interference and noise in the whole cell.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: December 14, 2010
    Assignee: Telefonaktiebolaget L M Ericsson (PUBL)
    Inventors: Xiaohui Wang, Erik Dahlbäck, Marten Myrehed, Torgny Palenius
  • Publication number: 20080200177
    Abstract: In third generation mobile communications networks, e.g. CDMA systems, a mobile station intending to access a base station transmits a request for access to a base station and waits for a response in the form of an indicator signal. Both detecting a signal as an acknowledgement message without one being sent from the base station and failing to detect such an acknowledgement message can give rise to noise and interference in the whole cell. The invention provides a method and a user equipment for determining the received signal strength in an access slot in a downlink channel and for asserting whether detection of an indicator signal from the base station in the access slot in the downlink channel is reliable. Hereby, a more secure reception of indicator signals can be obtained, which leads to reduced interference and noise in the whole cell.
    Type: Application
    Filed: April 20, 2006
    Publication date: August 21, 2008
    Inventors: Xiaohui Wang, Erik Dahlback, Marten Myrehed, Torgny Palenius
  • Patent number: 6873648
    Abstract: Locations of path rays in a multi-path channel receiver having multiple time references are detected, e.g., when the receiver switches time references. Locations of received path rays are searched for and determined. The locations are tracked for a predetermined amount of time. If the locations are lost after a predetermined amount of time, a new search for the locations of the received path rays is initiated. The searching may include determining a probable location of a most significant path ray, shifting the location within a predetermined interval, analyzing each shifted location to determine whether the shifted location corresponds to the actual location of the received path ray, and depending on the analysis results, completing the search or determining a probable location of a next most significant ray. The analysis may be performed by correlating each shifted location with a pilot sequence and determining if the correlation results exceed a predetermined threshold.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: March 29, 2005
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Roozbeh Atarius, Erik Dahlbäck
  • Patent number: 6757527
    Abstract: A method for synchronizing a local reference frequency in a mobile station includes measuring a current ambient condition of the mobile station and using stored data indicating variance of the local reference frequency with known ambient conditions to determine the method by which the local reference frequency is synchronized.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: June 29, 2004
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Erik Dahlbäck, Roozbeh Atarius
  • Publication number: 20040042411
    Abstract: A method and apparatus for controlling a rate of path searching for a channel in a communication system include searching for new path delays and identifying a number of new path delays during a specific time period. The identified number of new path delays are compared to at least one threshold value. The result of the comparison is used to alter the rate of path searching.
    Type: Application
    Filed: August 30, 2002
    Publication date: March 4, 2004
    Inventors: Erik Dahlback, Robert Svensson
  • Publication number: 20030114110
    Abstract: In a mobile communication device, an automatic frequency control method and apparatus are described that are capable of minimizing the number of timing changes that have to be made due to frequency errors without increasing the overall frequency sensitivity of the receiver unit. A frequency control unit of the present invention is capable of detecting a magnitude and direction of a timing drift that may arise from a frequency error. The automatic frequency control unit thereafter adjusts the frequency of the receiver unit in such a way so as to reverse the direction of the timing drift before it becomes too large. In this way, the number of timing changes that have to be made is reduced.
    Type: Application
    Filed: December 19, 2001
    Publication date: June 19, 2003
    Inventors: Erik Dahlback, Jonas Ohlsson