A method is provided for making, with a programmable multi-needle quilting machine, a quilted border loop sidewall panel for a bed mattress or foundation. The method involves executing programming on the machine to run a stitch pattern having a repeat length equal to or greater than a length of a side or end of the mattress or foundation, and preferably corresponding to the length around its perimeter. The stitch pattern presented in the programmed pattern repeat length includes a “prime pattern” having plural stitch pattern elements arranged to provide aperiodic pattern element variation along its length, which length is also equal to or greater than the length of the side or end of the mattress. Once made, the border loop sidewall panel is integrated into a mattress or foundation such that the pattern elements are placed in predetermined registry with selected other portions of the mattress or foundation. In this manner, it is possible to form a desired, reproducible aesthetic effect with high production efficiency.

A method is provided for making, with a programmable multi-needle quilting machine, a quilted border loop sidewall panel for a bed mattress or foundation. The method involves executing programming on the machine to run a stitch pattern having a repeat length equal to or greater than a length of a side or end of the mattress or foundation, and preferably corresponding to the length around its perimeter. The stitch pattern presented in the programmed pattern repeat length includes a “prime pattern” having plural stitch pattern elements arranged to provide aperiodic pattern element variation along its length, which length is also equal to or greater than the length of the side or end of the mattress. Once made, the border loop sidewall panel is integrated into a mattress or foundation such that the pattern elements are placed in predetermined registry with selected other portions of the mattress or foundation. In this manner, it is possible to form a desired, reproducible aesthetic effect with high production efficiency.

A motor drive system includes a rectifier circuit, a controller, a modulator circuit and a direct current (DC) motor. The rectifier circuit is configured to convert an alternating current (AC) voltage to a DC voltage. The controller is configured to output a control signal. The modulator circuit includes a pulse generation module, a feedback determination module, a pulse modulation module and a driving module, and is configured to generate a modulated DC driving signal based on the DC voltage and the control signal generated by the rectifier circuit and the controller. The DC motor is configured to operate in accordance with the modulated DC driving signal generated by the modulator circuit.

A motor drive system includes a rectifier circuit, a controller, a modulator circuit and a direct current (DC) motor. The rectifier circuit is configured to convert an alternating current (AC) voltage to a DC voltage. The controller is configured to output a control signal. The modulator circuit includes a pulse generation module, a feedback determination module, a pulse modulation module and a driving module, and is configured to generate a modulated DC driving signal based on the DC voltage and the control signal generated by the rectifier circuit and the controller. The DC motor is configured to operate in accordance with the modulated DC driving signal generated by the modulator circuit.

A sensing system for detecting motion of a bobbin used in a chain stitch type sewing machine using a needle on one side of a textile workpiece and a rotary bobbin positioned on an opposing side of the textile workpiece includes the bobbin being held in a bobbin case having a side panel forming an aperture. The rotary bobbin has a side surface with arcuate regions around a perimeter of the side surface. In addition, the sensing system includes the first and second optical sensors aligned to detect the presence of the first or second bobbin surface. The sensing system further includes a controller adapted to receive signals from the first and second optical sensors related to the presence of the first or second bobbin surface in the first or second regions and interpret the signals to provide the detecting motion of the bobbin.

A sensing system for detecting motion of a bobbin used in a chain stitch type sewing machine using a needle on one side of a textile workpiece and a rotary bobbin positioned on an opposing side of the textile workpiece includes the bobbin being held in a bobbin case having a side panel forming an aperture. The rotary bobbin has a side surface with arcuate regions around a perimeter of the side surface. In addition, the sensing system includes the first and second optical sensors aligned to detect the presence of the first or second bobbin surface. The sensing system further includes a controller adapted to receive signals from the first and second optical sensors related to the presence of the first or second bobbin surface in the first or second regions and interpret the signals to provide the detecting motion of the bobbin.

Systems and methods for interactive guidance of sewing activities are described herein. Many sewing activities such as threading media, conducting general machine maintenance, and sewing using a pattern can be difficult and may require multiple steps to be performed correctly. Through the use of augmented reality (AR), the technologies disclosed herein provide interactive guidance to a user in order to perform one or more sewing activities. The performance of these activities is further enhanced using sensor feedback which can reduce common errors associated with each activity.

Systems and methods for interactive guidance of sewing activities are described herein. Many sewing activities such as threading media, conducting general machine maintenance, and sewing using a pattern can be difficult and may require multiple steps to be performed correctly. Through the use of augmented reality (AR), the technologies disclosed herein provide interactive guidance to a user in order to perform one or more sewing activities. The performance of these activities is further enhanced using sensor feedback which can reduce common errors associated with each activity.

A sewing apparatus, includes a display input unit including a display unit configured to display an image of an input screen, and an input detection unit configured to detect an input operation on the input screen; and a control apparatus that performs display control of the display unit in response to the input operation. The control apparatus performs display control in which a background of the input screen is set to a dark color as a whole, a sewing pattern image displayed on the input screen is set to brightness higher than that of the background, and an operation unit that receives the input operation on the input screen is set to a color lighter than that of the background.

A sewing apparatus, includes a display input unit including a display unit configured to display an image of an input screen, and an input detection unit configured to detect an input operation on the input screen; and a control apparatus that performs display control of the display unit in response to the input operation. The control apparatus performs display control in which a background of the input screen is set to a dark color as a whole, a sewing pattern image displayed on the input screen is set to brightness higher than that of the background, and an operation unit that receives the input operation on the input screen is set to a color lighter than that of the background.