Abstract: Systems and methods are disclosed herein, including a method, comprising: (a) receiving, with a differential quadrature phase shift keying (DQPSK) encoder of a radio frequency (RF) transmitter, an input digital bitstream encoded in reflected binary code (RBC) and comprising first symbols; (b) receiving a first symbol of the first symbols; (c) storing the first symbol in the memory as a previous symbol; (d) receiving a second symbol of the first symbols as a current symbol; (e) converting the current symbol and the previous symbol into natural binary code (NBC); (f) adding the current symbol and the previous symbol to produce a particular second symbol; (g) converting the particular second symbol into RBC; (h) storing the current symbol in the memory as the previous symbol; and (i) repeating steps (d)-(h) for each of the first symbols to produce a DQPSK-encoded digital bitstream having the second symbols encoded in RBC.

Abstract: A trim material attachment assembly for a seat includes a cushion having first and second sides and an aperture formed therethrough. A trim cover is provided for covering the first side of the seat cushion. A one-piece, integrally molded trim holder includes a central member disposed in the aperture of the cushion. The central member has first and second ends. A clip is formed at the first end of the central member and engaged with the trim cover to secure the holder to the trim cover. A leg is formed at the second end of the central member and is connected to the second end by a living hinge permitting the leg to move between an assembly position to allow the plate member to be inserted through the aperture, and a holding position to prevent the leg from being pulled through the aperture, thereby securing the trim cover to the cushion.