Patent ID: 6163690
Filing Date: 2000-12-19
Classification: H04B,H04W,Y02D

Abstract:
A method of controlling the on/off state of a wireless communications device connected to a vehicle ignition system, comprising:a) monitoring the power state of said vehicle ignition system;b) automatically turning off said wireless communications device by supplying a control signal to said wireless communications device instructing said wireless communications device to turn off in response to said vehicle ignition system powering off, said supplying a control signal comprising waiting a predetermined time period after said vehicle ignition system powers off and delaying generating said control signal for an additional amount of time if said wireless communications device is active when said predetermined time period elapses; andc) thereafter, in response to said vehicle ignition system powering on:i) automatically turning on said wireless communications device if said wireless communications device was last turned off in response to said control signal;ii) leaving said wireless communications device turned off if said wireless communications device was last turned off by user action.