Patents by Inventor Juha Rakkola

Juha Rakkola 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: 11264521
    Abstract: A photosensitive field-effect transistor which can be configured to provide an electrical response when illuminated by electromagnetic radiation incident on the transistor. The field-effect transistor has a channel (13) made from a two-dimensional material and comprises a photoactive layer (22) which can be configured to donate charge carriers to the transistor channel (13) when electromagnetic radiation is absorbed in the photoactive layer (22). The photosensitive field-effect transistor comprises a top electrode (21) which is in contact with the photoactive layer on one or more contact areas which together form a contact pattern. With a suitably patterned top electrode (21), a voltage applied to the electrode can function as an electrical shutter which can switch the photosensitive field-effect transistor between a light-sensitive state and a light-immune state.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: March 1, 2022
    Assignee: EMBERION OY
    Inventors: Martti Voutilainen, Sami Kallioinen, Juha Rakkola
  • Publication number: 20210074869
    Abstract: A photosensitive field-effect transistor which can be configured to provide an electrical response when illuminated by electromagnetic radiation incident on the transistor. The field-effect transistor has a channel (13) made from a two-dimensional material and comprises a photoactive layer (22) which can be configured to donate charge carriers to the transistor channel (13) when electromagnetic radiation is absorbed in the photoactive layer (22). The photosensitive field-effect transistor comprises a top electrode (21) which is in contact with the photoactive layer on one or more contact areas which together form a contact pattern. With a suitably patterned top electrode (21), a voltage applied to the electrode can function as an electrical shutter which can switch the photosensitive field-effect transistor between a light-sensitive state and a light-immune state.
    Type: Application
    Filed: December 12, 2018
    Publication date: March 11, 2021
    Inventors: Martti VOUTILAINEN, Sami KALLIOINEN, Juha RAKKOLA
  • Publication number: 20140314082
    Abstract: An apparatus comprises at least one processor and at least one memory including computer code. The at least one memory and the computer code are configured to with the at least one processor cause the apparatus to at least perform receiving a first message from a first port, the first message for transmission in a communications network. The first message comprises at least one destination address. The apparatus is also configured to perform determining whether the first message is deliverable and generating a second message comprising the at least one destination address for each undeliverable address; and transmitting the second message.
    Type: Application
    Filed: February 25, 2011
    Publication date: October 23, 2014
    Applicant: Nokia Corporation
    Inventors: Pekka Korpinen, Juha Rakkola, Michel Gillet
  • Publication number: 20100259285
    Abstract: The invention relates to an electronic circuit and a method capable of providing feedback in the electronic circuit, such that the effect of leakage currents in the circuit are minimised. The method includes the steps of storing an analogue input signal using an analogue storage device, converting the stored analogue input signal into a digital signal and storing the digital signal, converting the stored digital signal into an analogue feedback signal, and providing feedback in the electronic circuit using the analogue feedback signal.
    Type: Application
    Filed: March 5, 2007
    Publication date: October 14, 2010
    Applicant: NOKIA CORPORATION
    Inventors: Kimmo Koli, Jari Savolainen, Juha Rakkola
  • Publication number: 20080174550
    Abstract: The invention relates to a motion-input device for a computing device, comprising a housing; a three-axis acceleration sensor arranged in said housing for outputting inertia signals related to the orientation and the movement of the motion-input device with a three-axis compass arranged in said housing, for outputting magnetic field signals related to the magnetic field orientation of the motion-input device, wherein said motion-input device is provided with a transfer component for transferring said magnetic field signals and said inertia signals to said computing device.
    Type: Application
    Filed: February 24, 2005
    Publication date: July 24, 2008
    Inventors: Kari Laurila, Samuli Silanto, Anssi Vanska, Antti Virolainen, Timo Pylvanainen, Juha Rakkola, Jukka H. Salminen
  • Patent number: 7216053
    Abstract: An energy-efficient acceleration measurement system is presented. The system includes an accelerometer, responsive to acceleration of the system, for providing an accelerometer output signal having a magnitude indicative of at least one component of the acceleration. A motion detector is responsive to the accelerometer output signal, and provides a processor interrupt signal, but only if the magnitude of acceleration reaches a threshold. The processor, responsive to the processor interrupt signal, measures the acceleration with higher accuracy than the motion detector is capable of, but in a way that consumes more power than was needed by the motion detector.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: May 8, 2007
    Assignee: Nokia Corporation
    Inventors: Juha Rakkola, Jukka Salminen, Kimmo Koli, Teemu Salo
  • Publication number: 20060161377
    Abstract: An energy-efficient acceleration measurement system is presented. The system includes an accelerometer, responsive to acceleration of the system, for providing an accelerometer output signal having a magnitude indicative of at least one component of the acceleration. A motion detector is responsive to the accelerometer output signal, and provides a processor interrupt signal, but only if the magnitude of acceleration reaches a threshold. The processor, responsive to the processor interrupt signal, measures the acceleration with higher accuracy than the motion detector is capable of, but in a way that consumes more power than was needed by the motion detector.
    Type: Application
    Filed: December 30, 2004
    Publication date: July 20, 2006
    Inventors: Juha Rakkola, Jukka Salminen, Kimmo Koli, Teemu Salo
  • Publication number: 20040266480
    Abstract: A system, apparatus and method for incorporating sensor functionality into mobile communication devices having a host process and employing at least one memory, such as a removable memory card. Access to the removable memory card by the host process is facilitated using a digital interface, and storing sensor data from one or more sensor modules into a local memory. The host process of the mobile communication device is coupled to the local memory via the digital interface which is used by the host process to access the removable memory card. The sensor data may then be accessed from the local memory by the host process via the digital interface.
    Type: Application
    Filed: June 27, 2003
    Publication date: December 30, 2004
    Inventors: Kari Tapani Hjelt, Santtu Naukkarinen, Tapani Ryhanen, Jarkko Sairanen, Jukka H. Salminen, Samuli Silanto, Ulrica Bohne, Michel Gillet, Juha Rakkola
  • Publication number: 20040181703
    Abstract: The invention relates to an electronic device comprising means for controlling operation modes, one or more subunits for which, in terms of power consumption, at least two operation modes are determinable, one of the modes being an active mode and one being a sleep mode, in which sleep mode power consumption is smaller than that in the active mode.
    Type: Application
    Filed: February 11, 2004
    Publication date: September 16, 2004
    Applicant: Nokia Corporation
    Inventors: Harri Lilja, Tapani Ryhanen, Jari Vallstrom, Mika Maarala, Kai Nybacka, Santtu Naukkarinen, Juha Rakkola, Petteri Jylanki