Patents by Inventor Jukka Riihiaho

Jukka Riihiaho 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: 10852834
    Abstract: A haptic signalizing device includes a number of piezoelectric elements arranged below a device surface such that mechanical deformations caused by the converse piezoelectric effect in the at least one piezoelectric element make the device surface to move such that the device surface follows the piezoelectric element. A driving circuit causes the converse the piezoelectric effect on the at least one piezoelectric element by generating an alternating electric field over the piezoelectric element in a bipolar fashion. The piezoelectric element is arranged i) to locally move the device surface inwards when the mechanical deformation in the piezoelectric element is a deflection directed away from the device surface, and ii) to locally move the device surface outwards when the mechanical deformation in the piezoelectric element is a deflection that is directed towards the device surface.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: December 1, 2020
    Assignee: AITO BV
    Inventors: Jukka Riihiaho, Turo Keski-Jaskari
  • Patent number: 10761638
    Abstract: A detection of piezoelectric sensor elements is provided. According to a first aspect, a device comprises: a matrix of piezoelectric sensor elements comprising rows of the piezoelectric sensor elements and columns of the piezoelectric sensor elements; measuring circuits configured to detect at least one touch, wherein the measuring circuits are configured to the rows and to the columns; and a wake-up trigger configured to detect the at least one touch and further configured to trigger the matrix to an operation mode when the at least one touch is detected. The device is configured for detecting a press event of a plurality of piezoelectric sensor elements, using, for example only a single activity detecting and touch recognition circuit. Complexity and energy consumption may be reduced.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: September 1, 2020
    Assignee: Aito BV
    Inventors: Turo Keski-Jaskari, Jukka Riihiaho
  • Patent number: 10665771
    Abstract: A piezoelectric sensor comprises a microcontroller, a plurality of piezoelectric sensor elements of which at least two are useable for producing a haptic signal by a voltage (HV) generated by a boost converter connected to each piezoelectric sensor element, and connected to a piezo channel of the microcontroller. A multiplexer individually controls each of the switches if an enable a signal is present. The microcontroller is configured to use each of the piezo channels as a sensor channel for reading sensor input from the respective piezoelectric sensor element and in response to detecting a sensor input in at least one of the piezo channels to set the enable signal at the increase voltage pin and/or the enable signal pin, and to set a signal to at least one piezo channel in which the sensor input was detected.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: May 26, 2020
    Assignee: AITO BV
    Inventor: Jukka Riihiaho
  • Publication number: 20200026356
    Abstract: A haptic signalizing device includes a number of piezoelectric elements arranged below a device surface such that mechanical deformations caused by the converse piezoelectric effect in the at least one piezoelectric element make the device surface to move such that the device surface follows the piezoelectric element. A driving circuit causes the converse the piezoelectric effect on the at least one piezoelectric element by generating an alternating electric field over the piezoelectric element in a bipolar fashion. The piezoelectric element is arranged i) to locally move the device surface inwards when the mechanical deformation in the piezoelectric element is a deflection directed away from the device surface, and ii) to locally move the device surface outwards when the mechanical deformation in the piezoelectric element is a deflection that is directed towards the device surface.
    Type: Application
    Filed: February 5, 2018
    Publication date: January 23, 2020
    Applicant: AITO BV
    Inventors: Jukka RIIHIAHO, Turo KESKI-JASKARI
  • Publication number: 20190179472
    Abstract: A detection of piezoelectric sensor elements is provided. According to a first aspect, a device comprises: a matrix of piezoelectric sensor elements comprising rows of the piezoelectric sensor elements and columns of the piezoelectric sensor elements; measuring circuits configured to detect at least one touch, wherein the measuring circuits are configured to the rows and to the columns; and a wake-up trigger configured to detect the at least one touch and further configured to trigger the matrix to an operation mode when the at least one touch is detected. The device is configured for detecting a press event of a plurality of piezoelectric sensor elements, using, for example only a single activity detecting and touch recognition circuit. Complexity and energy consumption may be reduced.
    Type: Application
    Filed: June 9, 2017
    Publication date: June 13, 2019
    Applicant: Aito BV
    Inventors: Turo KESKI-JASKARI, Jukka RIIHIAHO
  • Publication number: 20170324020
    Abstract: A piezoelectric sensor comprises a microcontroller, a plurality of piezoelectric sensor elements of which at least two are useable for producing a haptic signal by a voltage (HV) generated by a boost converter connected to each piezoelectric sensor element, and connected to a piezo channel of the microcontroller. A multiplexer individually controls each of the switches if an enable a signal is present. The microcontroller is configured to use each of the piezo channels as a sensor channel for reading sensor input from the respective piezoelectric sensor element and in response to detecting a sensor input in at least one of the piezo channels to set the enable signal at the increase voltage pin and/or the enable signal pin, and to set a signal to at least one piezo channel in which the sensor input was detected.
    Type: Application
    Filed: November 10, 2015
    Publication date: November 9, 2017
    Applicant: AITO INTERACTIVE OY
    Inventor: Jukka Riihiaho
  • Patent number: 9071236
    Abstract: Embodiments of a method for controlling a charge pump and a control device for a charge pump are described. In one embodiment, a method for controlling a charge pump involves monitoring a power-on status of the charge pump, calculating a duty cycle of the charge pump within a time period based on the power-on status of the charge pump, and adjusting at least one of a clock frequency setting and a capacitance setting of the charge pump in based on the duty cycle of the charge pump. Other embodiments are also described.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: June 30, 2015
    Assignee: NXP B.V.
    Inventors: Sergio Masferrer, Maurits Mario Nicolaas Storms, Jukka Riihiaho
  • Publication number: 20150180458
    Abstract: Embodiments of a method for controlling a charge pump and a control device for a charge pump are described. In one embodiment, a method for controlling a charge pump involves monitoring a power-on status of the charge pump, calculating a duty cycle of the charge pump within a time period based on the power-on status of the charge pump, and adjusting at least one of a clock frequency setting and a capacitance setting of the charge pump in based on the duty cycle of the charge pump. Other embodiments are also described.
    Type: Application
    Filed: December 23, 2013
    Publication date: June 25, 2015
    Applicant: NXP B.V.
    Inventors: Sergio Masferrer, Maurits Mario Nicolaas Storms, Jukka Riihiaho