Method and apparatus for weaving pattern formation in woven fabrics with additional weft effects

A non-transitory tangible machine-readable data storage medium encoded with and storing a functional data structure comprising a pattern draft, which when read by a control device of a weaving machine controls a weaving operation of said weaving machine to produce a woven fabric, in accordance with said pattern draft, of warp threads, weft threads and at least one effect thread, wherein each said effect thread forms interlacing points at which said effect thread crosses behind respective ones of said weft threads on a back side of said woven fabric and crossing points at which said effect thread crosses over in front of respective ones of said weft threads on a front side of said woven fabric, wherein respective ones of said interlacing points are spaced apart from one another with a respective plurality of said warp threads therebetween in a weft direction of said woven fabric,

• wherein:
• said pattern draft comprises plural data sets respectively allocated to successive weave pattern rows of a weave pattern in a pattern repeat area for said woven fabric,
• said pattern repeat area extends in said weft direction and in a warp direction of said woven fabric and represents a pattern repeat of said weave pattern,
• said successive weave pattern rows follow successively after one another in said warp direction,
• said weave pattern rows include interlacing weave pattern rows that respectively include at least a respective one of said interlacing points in said pattern repeat, and
• said plural data sets include a respective interlacing data set for each respective one of said interlacing weave pattern rows, wherein each said interlacing data set includes plural data values comprising a first data value derived from a weft sequence number of a respective one of said weft threads behind which said effect thread crosses at said respective interlacing point, a second data value derived from a position of said respective interlacing point in said weft direction in said pattern repeat, and at least one further data value derived from said weave pattern.

A non-transitory tangible machine-readable data storage medium storing a data structure comprising a pattern draft, which when read by a control device of a weaving machine controls a weaving operation of said weaving machine to produce, in accordance with said pattern draft, a woven fabric of warp threads running in a warp direction, weft threads running in a weft direction, and at least one effect thread that crosses over a respective one of said weft threads at a crossing point and crosses under a respective one of said weft threads at an interlacing point according to a weave pattern,

• wherein:
• said weave pattern comprises successive pattern rows that extend in said weft direction and successively follow one another in said warp direction,
• said pattern draft comprises successive data sets that are respectively individually allocated to said pattern rows, and
• a respective one of said data sets allocated to a respective one of said pattern rows having at least one of said interlacing points includes a first data value identifying said respective pattern row, and a second data value identifying a position, in said weft direction, of said interlacing point in said respective pattern row.