Patents by Inventor Seppo Kivela

Seppo Kivela 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: 6404423
    Abstract: Control of display power management by a host computer connected by a standard cable to a display monitor can be avoided by simply detecting user inactivity within a monitor or signaling such to the monitor with any one of the DPMS signals to the monitor, such as the video signal, i.e., the video intelligence signal occurring between horizontal synchronization pulses. In the absence of the video signal, the monitor commences timing of several display power management states without further reference to the DPMS signaling signals, except to monitor whether the video signal returns to normal. In the absence of a return to normal on the video signal, the display monitor transitions from a normal state to a standby state, thence to a suspend state, and finally to an off state. If user activity is again detected, a transition from any of these display power management states to normal is made.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: June 11, 2002
    Assignee: Nokia Display Products Oy
    Inventors: Seppo Kivelä, Kari Vigelius
  • Patent number: 6052070
    Abstract: A method for forming a character string, an electronic communication device (31) and a charging unit (29) for charging the electronic communication device, wherein the communication device (31) does not comprise at all number/letter keys used for the selection of a phone number. The numbers or letters are selected from a display (39; 41) by means of selecting keys (32-38). The invention can be exploited, for example, in portable mobile phones.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: April 18, 2000
    Assignee: Nokia Mobile Phones Ltd.
    Inventors: Seppo Kivela, Seppo Helle, Risto Mort, Graham Thomas
  • Patent number: 6005525
    Abstract: The scope of the present invention is the antenna arrangement of a radio communication device (87) intended for establishing a two-way connection, with which arrangement it is striven for to reduce the effects of the body on the properties of an antenna and on the other hand to reduce the radiation of the antenna towards the body. The antenna element (81) is planar and it consists of a ground plane and of a radiator (86) essentially parallel to it. The antenna element has been arranged in a position in which the ground plane ends up between the body of the user of the radio communication device and the radiator, and the amplification maximum of the radiation pattern of the antenna is directed away from the user of the radio communication device in an operating position typical of the radio communication device.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: December 21, 1999
    Assignee: Nokia Mobile Phones Limited
    Inventor: Seppo Kivela
  • Patent number: 5682093
    Abstract: The invention relates to a method for reducing power consumption in an electronic device which includes a voltage regulator that has a transistor (T1) connected in series as regards the load current. The invention also relates to such a regulator and an electronic device using such a regulator. The base current (Ib) of the series transistor (T1) of the regulator is arranged to have different values according to how big a load current is required of the regulator. For that purpose, the regulator includes an extra intermediate input (Vsx) which switches the base current (Ib) to be conducted through an alternative current path (Re2, D1, T4) when the maximum load current is required.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: October 28, 1997
    Assignee: Nokia Mobile Phones Ltd.
    Inventor: Seppo Kivela