Abstract: A system for correcting problems in a vehicle maintenance system that includes a local computer in communication via a network with a remote computer. The remote computer can transmit a diagnostic to the local computer with the local computer returning diagnostic data from running the diagnostic. The remote computer can contain a decision algorithm that uses the diagnostic data to determine a correction for the problem and send the correction to the local computer. The system can also include a database at the remote computer where the database can contain histories of previous alignment system problems. The database can also contain service histories for particular maintenance system as well as solutions to past problems. Finally the database can also contain component information for all maintenance systems in the field.

Abstract: A solution to the read-modify-write problem for mixed tri-state chip processors by implementing a simple hardware change. This change could easily be built into microcontrollers and other chip processors to once and for all solve the problem. The present invention uses at least one logic gate to route data from the output of the data register back to itself instead of from the input pin during reads; the correct value stays in the output register at all times.

Abstract: An apparatus having at least one earpiece, a circuit and a power supply. The earpiece having a speaker and a microphone. The microphone receiving external sound energy and converting the external sound energy to electrical sound signals. The circuit receiving the electrical sound signals and attenuating the electrical sound signals utilizing a plurality of attenuation values. The circuit provides the attenuated sound signals to the speaker. The power supply provides power to the circuit.

Abstract: A system for correcting problems in a vehicle maintenance system that includes a local computer in communication via a network with a remote computer. The remote computer can transmit a diagnostic to the local computer with the local computer returning diagnostic data from running the diagnostic. The remote computer can contain a decision algorithm that uses the diagnostic data to determine a correction for the problem and send the correction to the local computer. The system can also include a database at the remote computer where the database can contain histories of previous alignment system problems. The database can also contain service histories for particular maintenance system as well as solutions to past problems. Finally the database can also contain component information for all maintenance systems in the field.