Patents by Inventor Lionel M. Cimaz

Lionel M. Cimaz 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).

  • Keypad scanning with radio event isolation
    Patent number: 8884791
    Abstract: Apparatus and methods for scanning a keypad of a communications device in a manner that tends to minimize interference with transceiver operation, such as a RF transceiver. In one embodiment, a controller receives a periodic signal of the communications device and provides a scan signal to cause the keypad to be scanned. In a sleep mode a keypad scan is performed only subsequent to a keypad activation. However, if the communications device is in use a keypad scan is performed once per frame at predetermined intervals, in one embodiment.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: November 11, 2014
    Assignee: ST-Ericsson SA
    Inventors: Frederick A. Rush, Lionel M. Cimaz, Wasim Quddus