Patents by Inventor Keijo Virtanen

Keijo Virtanen 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: 7317924
    Abstract: A method allows a user of a mobile terminal to switch from a communication service currently active between that mobile terminal and another mobile terminal to a different communication service in such a manner that the end to end connection between terminals appears unbroken to the user. The user initiates the switch by inputting an appropriate command at the mobile terminal. The mobile terminal then transfers a request to the other mobile terminal. The request invokes a user interface on the other mobile terminal and prompts the user of the other mobile terminal to indicate whether or not they agree to switch from the currently active communication service to the other communication service. After receiving the user's response to the prompt, the other mobile terminal sends back a reply indicating the user's response. Signaling to perform the switch is initiated in response to the reply.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: January 8, 2008
    Assignee: Nokia Corporation
    Inventors: Keijo Virtanen, Tarja-Leena Ranta
  • Patent number: 7286821
    Abstract: In the development of mobile communication there is a trend towards more personalized ways of communication and forms of expression. By using a User-to-User Signalling (UUS) supplementary service that allows a served subscriber to send/receive a limited amount of subscriber generated information to/from another user in association with a call and working parallel to the normal communication channel, personalized items can be transferred during call set-up and during call. Examples of what kind of personalization items are text messages, picture messages, animations or ringing tones.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: October 23, 2007
    Assignee: Nokia Corporation
    Inventors: Christian Kraft, Keijo Virtanen, Toraj Khadjenoori
  • Patent number: 7020273
    Abstract: The invention relates to a communication terminal provided which selectively distorts an acoustic signal inputted by the user to the communication terminal during a call to another user of a communication terminal. The invention enables a user of a first communication terminal to selectively distort an acoustic signal inputted into the first communication terminal during a call with a user of a second communication terminal, where the method includes that the user of the first communication terminal inputs an acoustic signal. A processor in the first communication terminal distorts the signal according to a selection in the first communication terminal, where the selection is user defined or selected.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: March 28, 2006
    Assignee: Nokia Corporation
    Inventors: Christian Kraft, Keijo Virtanen
  • Patent number: 6879828
    Abstract: A method allows a user of a mobile terminal to switch from a communication service currently active between that mobile terminal and another mobile terminal to a different communication service in such a manner that the end to end connection between terminals appears unbroken to the user. The user initiates the switch by inputting an appropriate command at the mobile terminal. The mobile terminal then transfers a request to the other mobile terminal. The request invokes a user interface on the other mobile terminal and prompts the user of the other mobile terminal to indicate whether or not they agree to switch from the currently active communication service to the other communication service. After receiving the user's response to the prompt, the other mobile terminal sends back a reply indicating the user's response. Signaling to perform the switch is initiated in response to the reply.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: April 12, 2005
    Assignee: Nokia Corporation
    Inventors: Keijo Virtanen, Tarja-Leena Ranta
  • Publication number: 20030099344
    Abstract: The invention relates to a communication terminal provided with means for a user to selectively distort an acoustic signal inputted by the user to the communication terminal during a call to another user of a communication terminal. In the development of mobile communication there is a strive towards more personalised ways of communication and expression forms. Users have found out that the present means for personalisation have some limitations, and have been looking for something more advanced. In the communication between the young there is often used different kinds of fantasy-languages or other peculiar ways of addressing each other. The invention enables a user of a first communication terminal to selectively distort an acoustic signal inputted into the first communication terminal during a call with a user of a second communication terminal, where the method includes that the user of the first communication terminal inputs an acoustic signal.
    Type: Application
    Filed: November 27, 2001
    Publication date: May 29, 2003
    Inventors: Christian Kraft, Keijo Virtanen
  • Publication number: 20030083050
    Abstract: In the development of mobile communication there is a strive towards more personalised ways of communication and forms of expression. By using a User-to-User Signalling (UUS) supplementary service that allows a served subscriber to send/receive a limited amount of subscriber generated information to/from another user in association with a call and working parallel to the normal communication channel personalised items can be transferred during call set-up and during call. Examples of what kind of personalisation items are text messages, picture messages, animations or ringing tones.
    Type: Application
    Filed: October 30, 2001
    Publication date: May 1, 2003
    Inventors: Christian Kraft, Keijo Virtanen, Toraj Khadjenoori
  • Patent number: RE47745
    Abstract: A method allows a user of a mobile terminal to switch from a communication service currently active between that mobile terminal and another mobile terminal to a different communication service in such a manner that the end to end connection between terminals appears unbroken to the user. The user initiates the switch by inputting an appropriate command at the mobile terminal. The mobile terminal then transfers a request to the other mobile terminal. The request invokes a user interface on the other mobile terminal and prompts the user of the other mobile terminal to indicate whether or not they agree to switch from the currently active communication service to the other communication service. After receiving the user's response to the prompt, the other mobile terminal sends back a reply indicating the user's response. Signaling to perform the switch is initiated in response to the reply.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: November 26, 2019
    Assignee: Nokia Technologies Oy
    Inventors: Keijo Virtanen, Tarja-Leena Ranta