A work center monitoring system includes an output device, such as a cathode ray tube (CRT), liquid crystal display (LCD), or other display device and a display controller. The controller formats work center information to be displayed on the output device as single-valued and multi-valued display segments....http://www.google.co.uk/patents/US6972761?utm_source=gb-gplus-sharePatent US6972761 - Method and apparatus for monitoring work center operations
