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:
Nov. 26, 1996
Filed:
Aug. 03, 1995
Lynne Edgar, Rochester, MI (US);
Ronald G Moore, Troy, MI (US);
Reno V Ramsey, Sterling Heights, MI (US);
Al E Tousignant, Clinton Township, Wayne County, MI (US);
Rockwell International Corporation, Pittsburgh, PA (US);
Abstract
A remote signal transmitter that is capable of producing a command comprising a signal including a first value and an answer calculated using the first value as an input variable in a transfer function. The transmitter broadcasts the signal to a receiver which receives the first value and the answer. The receiver then performs a second calculation using the first value to produce a second answer. The first answer incident upon the receiver is then compared with the second answer and if a predetermined comparison test is satisfied, the subsequent command is implemented. The preferred embodiment of the present invention includes a means to increment the first value each time the transmitter is utilized. In addition, the receiver includes a screening process in which the second calculation performed by the receiver will not be performed if a previously used first value is received.