Resources Contact Us Home
Electronic pattern control for a sewing machine

Image Number 7 for United States Patent #4141305.

A logic circuit generates in succession the stitch-control data for the successive stitches of a selected stitch pattern. The logic circuit does not store simultaneously all the stitch-control data for all the stitches of all the selectable stitch patterns, in the way done by conventional addressable random-access stitch-pattern memories. Instead, the logic circuit assumes successive states, in response to successive machine-synchronized pulses. In each state it generates, in the sense of bringing into existence for the first time, stitch-control data for the next stitch to be produced, this stitch-control data being derived from data related to a preceding stitch, e.g., the stitch-control data for the preceding stitch. The number of logic elements needed is low compared to that needed for a random-access stitch-pattern memory of the type storing all the stitch-control data for all the stitches of all the selectable patterns.

  Recently Added Patents
Adhesive structure of optical device, adhesion method, and optical pickup device
Method to trace video content processed by a decoder
Method and apparatus for pre-scheduling in closed-loop MU-MIMO antenna system
Method of controlling mechanical mechanisms of optical storage apparatus for peak power/current reduction, and related optical storage apparatus and machine-readable medium
Digital broadcast receiver and method for processing caption thereof
Laser protection polymeric materials
Toner cartridge and image forming apparatus including the same
  Randomly Featured Patents
Organic electro luminescence display including an insulating layer having contact holes in a region where a power line overlaps an electrode
Piston engine
Device and system for display of information, and vehicle equipped with such a system
Device for controlling the position of a drift advancing machine
Roller weight for fishing
Computer key and computer lock system
Apparatus and methods for guiding a needle
Adjustable tension idler pulley and belt
Torsion bar suspension
Utility table