Patent ID: 7048303

Claim:
An air bag starter comprising: a mechanical acceleration switch that opens and closes in response to an acceleration of said vehicle, the mechanical acceleration switch connected to first and second switching means respectively connected to first and second igniters of a vehicle air bag system; closure detecting means for detecting said mechanical acceleration switch being closed, and for outputting a signal A; ignition judging means in communication with a detector for detecting the acceleration of the vehicle, said ignition judging means for judging a level of the detected acceleration, for deciding a method of igniting said first and second igniters, and for turning on said first switching means and simultaneously outputting a first signal; logic means for outputting a forced ignition signal to forcedly ignite said first igniter on the basis of a logical AND value of said first signal and said signal A; and a driving switch connected in parallel to said mechanical acceleration switch and controlled by said forced ignition signal, wherein closing of said driving switch backs up the closing of said mechanical acceleration switch.