Patents by Inventor Erik Säll

Erik Säll 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).

  • Fingerprint sensing system with sensing reference potential providing circuitry
    Patent number: 9953204
    Abstract: A fingerprint sensing system comprising a device connection interface including a device reference potential input, a sensing arrangement, and sensing reference potential providing circuitry. The sensing arrangement includes multiple sensing structures and read-out circuitry connected to each of the sensing structures.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: April 24, 2018
    Assignee: FINGERPRINT CARDS AB
    Inventors: Rolf Sundblad, Emil Hjalmarson, Erik Säll, Allan Olsson, Klaas-Jan De Langen
  • FINGERPRINT SENSING SYSTEM WITH SENSING REFERENCE POTENTIAL PROVIDING CIRCUITRY
    Publication number: 20170308730
    Abstract: A fingerprint sensing system comprising a device connection interface including a device reference potential input, a sensing arrangement, and sensing reference potential providing circuitry. The sensing arrangement includes multiple sensing structures and read-out circuitry connected to each of the sensing structures.
    Type: Application
    Filed: January 5, 2017
    Publication date: October 26, 2017
    Inventors: Rolf Sundblad, Emil Hjalmarson, Erik Säll, Allan Olsson, Klaas-Jan De Langen
  • Fingerprint sensing system with adaptive power control
    Patent number: 9710690
    Abstract: A fingerprint sensing system comprising a device connection interface, and a sensing arrangement including sensing structures, a read-out circuitry connected the sensing structures, and a sensing arrangement controller for controlling the sensing arrangement between at least a first sensing arrangement operational mode and a second sensing arrangement operational mode. The system further comprising supply circuitry connected to the sensing arrangement, and comprising a supply circuitry controller for controlling the supply circuitry between a first supply circuitry operational mode and a second supply circuitry operational mode in which modes different supply power is provided to the sensing arrangement. The supply circuitry controller transitions the supply circuitry between its modes in response to a power state signal indicative of a future transition of the sensing arrangement from the first operational mode to the second operational mode.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: July 18, 2017
    Assignee: Fingerprint Cards AB
    Inventors: David Carling, Robert Hägglund, Emil Hjalmarson, Peter Nygren, Erik Säll