WATCH PAGER SYSTEM AND COMMUNICATION PROTOCOL

摘要

A portable pager for receiving a transmitted signal containing paging and timing data during a short time slot (604) assigned to the pager (20) comprises: timing means (720) for generating a time indicating signal; power up means (722) responsive to the timing means (720) for providing power only during the pager's assigned time slot (604); receiving means (840) coupled to the timing means (720) for detecting the transmitted signal powered by the power up means (720); decoding means (840) powered by the power up means (722) and connected to the receiving means for extracting the paging and timing data from the transmitted signal; first synchronisation means (701) powered by the power up means and responsive to the timing data for synchronizing the timing means; and indicating means (750) powered by the power up means (722) and responsive to the paging data for indicating when a page is detected.