Patents by Inventor Jens Hjelmstad

Jens Hjelmstad 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: 11467269
    Abstract: A laser detection and ranging device for detecting an object under a water surface, the laser detection and ranging device having a laser transmitter being configured to modulate a laser beam by a binary pseudo-random coding sequence to obtain a modulated laser beam, and to transmit the modulated laser beam towards the water surface, a laser detector for detecting a reflected laser beam, the reflected laser beam forming a reflected version of the transmitted laser beam, and a processor for detecting the object under the water surface upon the basis of the reflected laser beam.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: October 11, 2022
    Assignees: LADAR LIMITED, HIELMSTAD AS
    Inventor: Jens Hjelmstad
  • Publication number: 20220252728
    Abstract: A system for detecting plastics, macro-plastics, micro-plastics and nano-plastics in a maritime, estuary or river environment includes multiple detection devices and a data processing device. The detection devices detect the plastics, macro-plastics, micro-plastics, and nano-plastics using different detection wavelengths. The data processing device includes a communication interface and a processor. The communication interface receives detection signals from the detection devices and the processor determines locations of the plastics, the macro-plastics, the micro-plastics and the nano-plastics in the environment based at least in part on the received detection signals within a common coordinate system.
    Type: Application
    Filed: February 9, 2021
    Publication date: August 11, 2022
    Inventors: Sverre Dokken, Jens HJELMSTAD, Alexis MICHAEL, Carlos Eduardo MACHADO DOS SANTOS PINTO, Siegfried SCHMUCK
  • Publication number: 20220058932
    Abstract: A Man Over Board (MOB) system includes sensor units located around a periphery of a vessel, an interconnector unit communicatively coupled with the plurality of sensor units and configured to receive data from the sensors, a data fusion processing unit, and a control station. The data fusion processing unit is configured to receive the data from the sensor units via the interconnector unit, compile the data from the sensor units, and trigger a MOB warning based on the compiled data. The control station is located at a bridge of the vessel and configured to display the MOB warning and at least a portion of the compiled data from the sensor units via a video verification interface and receive verification input from a human operator via the video verification interface to confirm a MOB event.
    Type: Application
    Filed: December 16, 2019
    Publication date: February 24, 2022
    Inventors: Jens HJELMSTAD, Sverre DOKKEN, Alexis MICHAEL, Reiclulf MAALEN
  • Publication number: 20210168353
    Abstract: A system for visualizing an object to a remote user includes a digitization apparatus and a visualization apparatus. The digitization apparatus includes a sensor, a first processor, and a first communication interface. The sensor is configured to sense the object within a three-dimensional space region to obtain sensor data. The first processor is configured to determine volumetric data based upon the sensor data. The first communication interface is configured to transmit the volumetric data. The visualization apparatus includes a second communication interface, a second processor, and a display. The second communication interface is configured to receive the volumetric data. The second processor is configured to determine a three-dimensional representation of the object based upon the volumetric data. The display is configured to visualize the three-dimensional representation of the object to the remote user.
    Type: Application
    Filed: November 23, 2020
    Publication date: June 3, 2021
    Inventors: Gianluca Palumbo, Sverre Dokken, Jorgen Grindevoll, Jens Hjelmstad, Alexis Michael
  • Publication number: 20190146074
    Abstract: A laser detection and ranging device for detecting an object under a water surface, the laser detection and ranging device having a laser transmitter being configured to modulate a laser beam by a binary pseudo-random coding sequence to obtain a modulated laser beam, and to transmit the modulated laser beam towards the water surface, a laser detector for detecting a reflected laser beam, the reflected laser beam forming a reflected version of the transmitted laser beam, and a processor for detecting the object under the water surface upon the basis of the reflected laser beam.
    Type: Application
    Filed: December 18, 2018
    Publication date: May 16, 2019
    Applicants: LADAR LIMITED, HJELMSTAD AS
    Inventor: Jens HJELMSTAD
  • Patent number: 10247818
    Abstract: A detection system for detecting an object on a water surface, the detection system having a radio detection and ranging device for coarsely detecting a target water surface area with the object, and a laser detection and ranging device for detecting the object within the target water surface area, wherein the laser detection and ranging device includes a laser transmitter for transmitting a laser beam towards the target water surface area, a laser detector for detecting a reflected laser beam, the reflected laser beam forming a reflected version of the transmitted laser beam, and a processor for detecting the object within the target water surface area upon the basis of the reflected laser beam.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: April 2, 2019
    Assignees: LADAR LIMITED, HJELMSTAD AS
    Inventor: Jens Hjelmstad
  • Patent number: 10175356
    Abstract: A laser detection and ranging device for detecting an object under a water surface, the laser detection and ranging device having a laser transmitter being configured to modulate a laser beam by a binary pseudo-random coding sequence to obtain a modulated laser beam, and to transmit the modulated laser beam towards the water surface, a laser detector for detecting a reflected laser beam, the reflected laser beam forming a reflected version of the transmitted laser beam, and a processor for detecting the object under the water surface upon the basis of the reflected laser beam.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: January 8, 2019
    Assignees: LADAR LIMITED, HJELMSTAD AS
    Inventor: Jens Hjelmstad
  • Publication number: 20160291156
    Abstract: A laser detection and ranging device for detecting an object under a water surface, the laser detection and ranging device having a laser transmitter being configured to modulate a laser beam by a binary pseudo-random coding sequence to obtain a modulated laser beam, and to transmit the modulated laser beam towards the water surface, a laser detector for detecting a reflected laser beam, the reflected laser beam forming a reflected version of the transmitted laser beam, and a processor for detecting the object under the water surface upon the basis of the reflected laser beam.
    Type: Application
    Filed: October 23, 2014
    Publication date: October 6, 2016
    Inventor: Jens HJELMSTAD
  • Publication number: 20160266247
    Abstract: A detection system for detecting an object on a water surface, the detection system having a radio detection and ranging device for coarsely detecting a target water surface area with the object, and a laser detection and ranging device for detecting the object within the target water surface area, wherein the laser detection and ranging device includes a laser transmitter for transmitting a laser beam towards the target water surface area, a laser detector for detecting a reflected laser beam, the reflected laser beam forming a reflected version of the transmitted laser beam, and a processor for detecting the object within the target water surface area upon the basis of the reflected laser beam.
    Type: Application
    Filed: October 23, 2014
    Publication date: September 15, 2016
    Inventor: Jens HJELMSTAD
  • Publication number: 20160266246
    Abstract: A system for monitoring a maritime environment, the system including a plurality of detection devices for detecting objects in the maritime environment, the detection devices being configured for object detection according to different object detection schemes, and a data processing device having a communication interface and a processor, wherein the communication interface is configured to receive detection signals from the detection devices, and wherein the processor is configured to determine locations of the objects in the maritime environment upon the basis of the received detection signals within a common coordinate system.
    Type: Application
    Filed: October 23, 2014
    Publication date: September 15, 2016
    Applicant: LADAR LIMITED
    Inventor: Jens HJELMSTAD
  • Publication number: 20070241949
    Abstract: A digitizer arrangement for converting an analogue signal into a digital signal, including a first A/D converter, said first A/D converter being arranged to convert said analogue signal into a first digital signal with a first sampling rate, the first sampling rate being lower than the frequency of the analogue signal, a second A/D converter, said second A/D converter being arranged to convert said high frequency analogue signal into a second digital signal with a second sampling rate, the second sampling rate being lower than the frequency of the analogue signal, means for combining said first and second digital signals into a third digital signal with a third sampling rate that is at least a multiple of said first and second sampling rates.
    Type: Application
    Filed: December 30, 2004
    Publication date: October 18, 2007
    Inventors: Jens Hjelmstad, Per Valand
  • Publication number: 20070200760
    Abstract: A method and arrangement for finding the direction to an emitter source by determining the spatial frequency of a signal received from the source in a sensor panel and comparing the spatial frequency with the instantaneous frequency. The panel includes a first matrix of sensors and a second matrix of sensors interleaved with the first matrix. The spatial frequency is determined by comparing the signals received by the first and second sensor matrices.
    Type: Application
    Filed: February 17, 2005
    Publication date: August 30, 2007
    Inventor: Jens Hjelmstad
  • Patent number: 6070461
    Abstract: A system for the detection and measurement of atmospheric air movement irregularities such as wind velocity vector, wind shear, downdraft, clear air turbulence, aircraft induced vorteces and turbulence, in particular along a glidepath near airports, whereby an air volume under investigation is illuminated by a radio wave transmitter with a beam of coherent electromagnetic energy and a resulting wave field is received and processed in processor means to derive information on the existence of said atmospheric irregularities and furthermore to give specific measurements of related parameters, comprising at least one receiver for said resulting wave field, which is due to scattering in said air volume, positioned at a bistatic location having a selected distance from said transmitter, characterized by acoustic transmitter means located between said transmitter and said at least one receiver, and adapted to emit acoustic waves into said air volume, with frequency and beamwidth of the acoustic waves chosen such tha
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: June 6, 2000
    Assignee: Triad A/S
    Inventors: Dag T. Gjessing, Jens Hjelmstad, Andreas Tonning