DATA GENERATOR FOR PULSE GENERATOR
PURPOSE:To generate a pulse with a desired width at all times even when a pulse generator in which a relation between an input data and an output pulse width is fluctuated (or unknown) by comparing the phase of the output pulse of the pulse generator with the phase of a prescribed calibration pulse....
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PURPOSE:To generate a pulse with a desired width at all times even when a pulse generator in which a relation between an input data and an output pulse width is fluctuated (or unknown) by comparing the phase of the output pulse of the pulse generator with the phase of a prescribed calibration pulse. CONSTITUTION:This generator is provided with a phase comparator 42 comparing the phase of a PWM output Sb with the phase of a calibration pulse Sc. The calibration pulse Sc inputted to the phase comparator 42 is a pulse having a width at a point in a range of the PWM output Sb. A microcomputer 30 is used to correct a correction coefficient data Da converting a print data into a stage number data Di and an offset data Db sequentially to adjust the relation between the print data and the PWM output Sb to be close to a correct and ideal state at all times. |
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