Patents by Inventor Vahid Kazem-Gourdarzi

Vahid Kazem-Gourdarzi 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).

  • Noise canceling microphone with visual feedback
    Patent number: 5490219
    Abstract: Briefly, according to the invention, a noise-cancelling microphone apparatus (400) is disclosed. The microphone (400) comprises a sound transducer (106) for converting sound waves to electrical signals and means for substantially preventing ambient noise from being converted to electrical signal. A circuit (100) is provided for determining the level of noise not prevented form being converted to electrical signal. The microphone (400) further includes a display (148) for indicating when the level of the ambient noise being converted to electrical signal is above a predetermined level.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: February 6, 1996
    Assignee: Motorola, Inc.
    Inventors: Mehrdad Badie, Daniel M. Nigro, Vahid Kazem-Gourdarzi