Patents by Inventor Les Updegrove

Les Updegrove 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).

  • Cellular telephone with transmission-on and radio-on timers
    Patent number: 4903327
    Abstract: A radio-on timer and transmission-on timer of a cellular telephone (100) provide an accurate record of the total amount of time since manufacture that the cellular telephone (100) and its transmitter (160), respectively, have been turned on for the purpose of measuring the in-field reliability thereof. The cellular telephone (100) includes a processor (110) that is responsive an interrupt signal (117) for incrementing and storing an interrupt timer, the radio-on timer and the transmission-on timer in a volatile memory 114. When the processor (110) senses that power has been switched off, the processor (110) reads out from the volatile memory (114) the radio-on timer and transmission-on timer, reads out from the non-volatile memory (112) the previously stored radio-on timer and transmission-on timer, adds them together and stores the summed radio-on timer and transmission-on timer back in the non-volatile memory (112).
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: February 20, 1990
    Assignee: Motorola, Inc.
    Inventors: Sharada Raghuram, Gary J. Pregont, Les Updegrove, Thomas R. Klaus