Self-tying shoes Self-tying shoes Self-tying shoes (also known as "self-lacing" or "power laces") are designed to automatically tighten once the user puts them on. Such shoes were initially depicted in the 1989 science fiction film "Back to the Future II". In April 2009, Nike filed a patent for self-lacing shoes, with a design that bears a resemblance to those worn by Marty in the film "Back to the Future II", raising speculation among fans about a possible debut of self-lacing shoes. In 2014, Tinker Hatfield, the designer of the original Nike shoes as depicted in "Back to the Future II", indicated that
Self-organized time-division multiple access of a central station. Time synchronisation is usually taken care of using Coordinated Universal Time (UTC). STDMA is in use by the Automatic Identification System (AIS), a standard marine short-range coastal tracking system, and is the base of the International Civil Aviation Organization VHF Data Link Mode 4. While the method was patented, a US patent ex-parte reexamination certificate was issued in 2010 canceling all claims. Self-organized time-division multiple access Self-organized time-division multiple access (STDMA) is a channel access method designed by Håkan Lans, based on time-division multiplexing. The term "self-organized" describes the manner in which time slots are assigned