Patents by Inventor Jouni Polonen

Jouni Polonen 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).

  • CMOS-compander
    Patent number: 5293139
    Abstract: The invention relates to a compressor and an expander for use in a compander realized in CMOS-technology which is used to improve speech quality in mobile phone systems AMPS (NAMPS), NMT and TACS (JTACS, ETACS, NTACS). The compander is integrated with other functions of the mobile phone. The compressor and expander have SC-amplifiers controlled by a control logic. A double comparator XOR-block is used in the control of the amplifiers.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: March 8, 1994
    Assignee: Nokia Mobile Phones Ltd.
    Inventors: Jouni Polonen, Mika Gronroos, Kim Kaltiokallio