Abstract: The present invention concerns a method for verifying a command in a vehicle remote communication system. The remote communication system includes a remote transmitter, and a vehicle body having a receiver module and a control module connected by a communication bus disposed therein. The control module is in communication with at least one vehicle system. The remote transmitter transmits an activation signal that is received and decoded by the receiver module. The receiver module transmits a first message along the communication bus that is received by the control module. The control module transmits an acknowledgment message that is received by the receiver module. The receiver module re-transmits the first message that is received by the control module. The control module then initializes a vehicle system command to the vehicle system, thereby preventing an inadvertent activation of the vehicle system.

Abstract: A method of determining the phase angle of an internal combustion engine camshaft relative to a crankshaft of the engine, which significantly reduces the computational burden compared to conventional methods. The cam and crankshaft position pulses are identified by corresponding clock values, and the cam phase angle relative to the crankshaft is determined by computing a simple ratio of first and second time intervals based on the clock values, and multiplying the ratio by a known angle. One of the time intervals is defined by a time difference between successive crankshaft and camshaft pulses, while the other time interval is defined by a time difference between successive crankshaft pulses. The known angle is the angle of crankshaft rotation between the successive crankshaft pulses. The cam phase angle velocity is obtained by determining a change in cam phase angle, and dividing by the intervening time interval.

Abstract: A method of determining the phase angle of an internal combustion engine camshaft relative to a crankshaft of the engine, which significantly reduces the computational burden compared to conventional methods. The cam and crankshaft position pulses are identified by corresponding clock values, and the cam phase angle relative to the crankshaft is determined by computing a simple ratio of first and second time intervals based on the clock values, and multiplying the ratio by a known angle. One of the time intervals is defined by a time difference between successive crankshaft and camshaft pulses, while the other time interval is defined by a time difference between successive crankshaft pulses. The known angle is the angle of crankshaft rotation between the successive crankshaft pulses. The cam phase angle velocity is obtained by determining a change in cam phase angle, and dividing by the intervening time interval.