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:
Mar. 24, 1998
Filed:
Oct. 10, 1996
Timothy S Roddy, Plymouth, MI (US);
United Technologies Automotive, Inc., Dearborn, MI (US);
Abstract
A control is provided for allowing a user to actuate various home security systems such as garage door openers, home alarm systems, lights, etc., remotely. A transmitter is provided with encryption logic such that its signal is not easily duplicated. In a preferred embodiment, the transmitter is provided with separate channels for each of several systems which are to be actuated by the transmitter. Receivers are provided with logic to recognize the encrypted signal. The encrypted signal varies sequentially on each actuation of the transmitter. In another preferred feature of this invention, add-on receivers may be incorporated into the existing circuitry for the systems that are to be controlled by the inventive transmitter. In this way, existing systems may be utilized with the inventive transmitter.