Patent ID: 9001403
Filing Date: 2015-04-07
Classification: B41J,G02B,G03G

Abstract:
1. A method of operating a device having a moving galvanometer or oscillator, comprising: providing a drive signal to substantially resonate the galvanometer or oscillator; determining a parameter of the drive signal from which ambient pressure is to be determined; determining ambient pressure of the device based on the parameter of the drive signal; and implementing a correction for operating the device based on the determined ambient pressure, wherein the providing the drive signal further includes providing a sequence of pulses and the determining the parameter of the drive signal further includes determining a pulse width of at least one pulse of the sequence of pulses, and wherein the determining the parameter of the drive signal further includes determining a difference between the pulse width of the at least one pulse and a nominal pulse width, and the determining the ambient pressure comprises calculating ambient pressure from the difference using a substantially linear relationship between pulse width and pressure.