Patents by Inventor Chett Juall

Chett Juall 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).

  • High impedance polarity detector
    Patent number: 6853723
    Abstract: A method and apparatus for measuring signals conveyed by a varying polarity voltage signal across a tip and ring in a telephone system is disclosed. A voltage present across the tip and ring is used to charge a charge storage device, and the charge is periodically discharged for a relatively short amount of time. The burst of discharge current for the short amount of time allows an optocoupler to accurately operate, while presenting a very high impedance to the telephone line.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: February 8, 2005
    Assignee: Intel Corporation
    Inventor: Chett Juall