公开(公告)号：CA2214191A1

公开(公告)日：1998-03-06

申请号：CA2214191

申请日：1997-08-28

Applicant: HUNTER DOUGLAS

Inventor： SKINNER GARY F ,  JAROSINSHI MAREK ,  HOLFORD MICHAEL S ,  VOGEL DAVID ,  GAUDYN ERWIN ,  COLSTON WENDELL B ,  KOVACH JOSEPH E

IPC: E06B9/262 ,  E06B9/32 ,  E06B9/72 ,  E06B9/88 ,  E06B9/322

Abstract: A wireless battery-operated window covering assembly is disclosed. The window covering has a head rail in which all the components are housed. These include a battery pack, an interface module including an IR receiver and a manual switch, a processor board including control circuitry, motor, drive gear, and a rotatably mounted reel on which lift cords wind and unwind a collapsible shade. The circuitry allows for dual-mode IR receiver operation and a multi-sensor polling scheme, both of which are configured to prolong battery life. Included among these sensors is a lift cord detector which gauges shade status to control the raising and lowering of the shade, and a rotation sensor which, in conjunction with internal registers and counters keeps track of travel limits and shade position.