The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 1990
Filed:
Nov. 07, 1989
Michael S Masheff, St. Petersburg, FL (US);
Graig A Gemmer, Largo, FL (US);
E-Systems, Inc., Dallas, TX (US);
Abstract
A method and apparatus for identification of packet collisions which occur on a broadband communication bus. The collision detection apparatus is responsive to signals which normally reside on an RF packet channel. This apparatus identifies a collision by splitting a packet signal and then multiplying the split signal by itself utilizing a conventional mixer. The multiplied signal is passed through a bandpass filter and if no packet collision has occurred, then no significant signal energy will appear at the output of the bandpass filter. Howerever, in the event of a packet collision, then the multiplied output signal includes frequency components which pass through the bandpass filter to produce an energy level which is identified in a threshold detector.