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:
Oct. 12, 1993
Filed:
Sep. 26, 1991
George Lambropoulos, Grosse Pointe Woods, MI (US);
Robert A Hair, Pontiac, MI (US);
Kenneth R Pitera, Warren, MI (US);
TRW Inc., Cleveland, OH (US);
Abstract
A transmitter is provided for transmitting a remote binary control signal to a vehicle-mounted receiver having a stored unique security code, a security code comparator, circuitry for powering up and activating the code comparator upon receipt of a signal including an integral power up initiation code, and circuitry for outputting a vehicle function command corresponding to the function code portion of a received signal having the matching unique security code. The transmitter stores a unique security code comprising a sequence of binary bits and has a plurality of manual switches each operable to transmit an integral three-part signal comprising a sequence of binary bits including the power up initiation code, the unique security code, and a selected one of a plurality of function codes. Preferably, the power up initiation code includes at least two binary bits, the unique security code includes at least twenty-four binary bits, and the function codes each include at least three binary bits. Upon continued depression of the manual switch, the transmitter sends a second integral three-part signal containing a different function code.