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Article: Illinois Inventors Develop Rolling Code Security System
- Article from:
- US Fed News Service, Including US State News
- Article date:
- August 16, 2008
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Copyright informationCopyright © HT Media Ltd. All Rights Reserved. Provided by ProQuest LLC. (Hide copyright information)
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ALEXANDRIA, Va., Aug. 16 -- Bradford L. Farris of Chicago, and James J. Fitzgibbon of Streamwood, Ill., have developed a transmitter for sending encrypted signal.
According to the U.S. Patent & Trademark Office: "A rolling code transmitter is useful in a security system for providing secure encrypted radio frequency (RF) transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor ...
Related newspaper, magazine, and journal articles:
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Article: Rolling-code generator uses flash [micro]C. (Design: Ideas).
EDN Europe;
May 1, 2001 ;
249 words
......create a sequence of random numbers to prevent unwanted visitors from gaining entry into a protected facility. You can use a rolling-code generator to produce random numbers. To implement such a generator, you would typically need a microcontroller with external...
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