Patents by Inventor Duncan Lindsay

Duncan Lindsay 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).

  • Publication number: 20040109094
    Abstract: A video/audio system for delivering video and audio information, such as news and advertisements, and entertainment to patrons and customers of a petroleum station having a LED visual display and adjacent audio speakers. The LED video display is controlled by a light sensor to vary the brightness of the screen on existing light conditions, such as at night, at bright sunlight conditions, and critical conditions between night and bright sunlight. An audio microphone detects ambient sound levels at the site to control an amplifier and maintain audio output at a predetermined level above ambient noise. The LED screen is optimally arranged to seen by a majority of the customers at the gasoline pumps.
    Type: Application
    Filed: July 2, 2003
    Publication date: June 10, 2004
    Inventors: Brian Lindsay, Duncan Lindsay