Patents by Inventor Mary Cecilia Critchfield

Mary Cecilia Critchfield 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).

  • System, method, and apparatus for wireless camera detection
    Patent number: 9948412
    Abstract: A system, method, and apparatus for detecting wireless video cameras includes receiving radio waves in a radio frequency band and filtering the radio waves. Then it is determined whether a signal strength of the radio waves exceeds a threshold for a period of time, indicating that a video signal is present and if a video signal is present, the detection of a wireless video signal is signaled (e.g., making noise, vibrating, illuminating, blinking).
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: April 17, 2018
    Inventor: Mary Cecilia Critchfield
  • System, Method, and Apparatus for Wireless Camera Detection
    Publication number: 20170207865
    Abstract: A system, method, and apparatus for detecting wireless video cameras includes receiving radio waves in a radio frequency band and filtering the radio waves. Then it is determined whether a signal strength of the radio waves exceeds a threshold for a period of time, indicating that a video signal is present and if a video signal is present, the detection of a wireless video signal is signaled (e.g., making noise, vibrating, illuminating, blinking).
    Type: Application
    Filed: March 31, 2017
    Publication date: July 20, 2017
    Inventor: Mary Cecilia Critchfield
  • System, method, and apparatus for wireless camera detection
    Patent number: 9646479
    Abstract: A system, method and apparatus for detecting wireless video cameras includes receiving radio waves in a radio frequency band and filtering and down-converting the radio waves into an intermediate frequency. The intermediate frequency is then filtered, amplified, and demodulated into an FM video signal. Then it is determined whether synchronization pulses exist within the FM video signal and if substantial synchronization pulses exist within the FM video signal the detection of a wireless video signal is signaled (e.g., making noise, vibrating, or illuminating).
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: May 9, 2017
    Inventor: Mary Cecilia Critchfield
  • System, Method, and Apparatus for Wireless Camera Detection
    Publication number: 20150206411
    Abstract: A system, method and apparatus for detecting wireless video cameras includes receiving radio waves in a radio frequency band and filtering and down-converting the radio waves into an intermediate frequency. The intermediate frequency is then filtered, amplified, and demodulated into an FM video signal. Then it is determined whether synchronization pulses exist within the FM video signal and if substantial synchronization pulses exist within the FM video signal the detection of a wireless video signal is signaled (e.g., making noise, vibrating, or illuminating).
    Type: Application
    Filed: December 18, 2014
    Publication date: July 23, 2015
    Inventor: Mary Cecilia Critchfield