Pattern data processing device for sewing machine

摘要

A pattern data processing device processes a pattern data adapted for controlling a sewing machine to attain a relative movement between a cloth to be stitched and a sewing needle of the sewing machine thereby forming a desired stitch pattern on the cloth. The pattern data processing device includes: a unit pattern storing device for storing a plurality of pattern data each for forming a unit-pattern; a reference pattern storing device for storing pattern data for forming a reference pattern inside or outside of which the unit-pattern is to be arranged and position-relevant data indicative of positions at which the unit-pattern is to be arranged inside or outside of the reference pattern; a unit-pattern selecting apparatus for selecting pattern data corresponding to a desired unit-pattern from the unit-pattern storing device; synthesizing device for a synthesizing a pattern data for a composite pattern in which the selected unit-pattern is arranged inside or outside of the reference pattern, on the basis of the pattern data of the selected unit-pattern and the pattern data of the reference pattern and the position-relevant data; and a composite pattern storing apparatus for storing the synthesized pattern data for the composite pattern.