Communications: electrical – Continuously variable indicating – With meter reading
Patent
1991-09-26
1993-10-12
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
34082531, 341176, H04Q 700
Patent
active
052529665
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.
REFERENCES:
patent: 4143368 (1979-03-01), Route et al.
patent: 4194153 (1980-03-01), Masaki et al.
patent: 4573046 (1986-02-01), Pinnow
patent: 4663626 (1987-05-01), Smith
patent: 4665397 (1987-05-01), Pinnow
patent: 4761644 (1988-08-01), Kawai et al.
patent: 4835531 (1989-05-01), Sato
Hair Robert A.
Lambropoulos George
Pitera Kenneth R.
Greenlee David A.
Holloway III Edwin C.
TRW Inc.
Yusko Donald J.
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