Browse Prior Art Database

REMOTE CONTROLLER FOR AUTOMOBILE

IP.com Disclosure Number: IPCOM000006099D
Original Publication Date: 1991-Apr-01
Included in the Prior Art Database: 2001-Dec-04
Document File: 1 page(s) / 62K

Publishing Venue

Motorola

Related People

Frederick Cho: AUTHOR [+3]

Abstract

When individuals leave their homes or offices for vehicular journeys, it would often be desirable to remotely prepare their automobiles for driving. For instance, when an office employee prepares to drive home on a frigid winter evening, a remote control device which could start the employee's car and engage the heating system before the employee leaves the office would be a tremendous convenience. Such a device could also remotely program the automobile to start its engine and engage the air conditioning system on a warm day, or turn off headlights which were accidentally left on, or lock doors which may have been left unlocked.

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MOTOROLA INC. Technical Developments volume 12 April 1991

REMOTE CONTROLLER FOR AUTOMOBILE

by Frederick Cho, Michael Robinson and JohniFrei

  When individuals leave their homes or offices for vehicular journeys, it would often be desirable to remotely prepare their automobiles for driving. For instance, when an office employee prepares to drive home on a frigid winter evening, a remote control device which could start the employee's car and engage the heating system before the employee leaves the office would be a tremendous convenience. Such a device could also remotely program the automobile to start its engine and engage the air conditioning system on a warm day, or turn off headlights which were accidentally left on, or lock doors which may have been left unlocked.

  This article describes the system architecture in which such a remote control device could be implemented. This system uses an existing relatively high power transmitter which is used in common by a number of customers, such as a paging or cellular telephone transmitter, to transmit coded commands to individual vehicles wherein these commands

implement various desired automobile/vehicle functions. Figure 1 details this system. A modified paging receiver is employed as the controlling device in the automobile. The receiver employs standard RF front end circuitry. Its tnicroprocessor and support circuits are modified siightly, however, to act as multifunction controllers. When the user wishes to re...