Patent ID: 6034620
Filing Date: 2000-03-07
Classification: H04L

Abstract:
A selective call radio receiving method comprising the steps of:a. receiving a radio communication signal to produce a voltage signal which includes an intermittent succession of at least one synchronization pattern at a synchronization interval;b. detecting in said voltage signal a set of a predetermined number of detected threshold levels in each synchronization pattern and a data signal;c. storing in a memory said detected threshold levels in first to N-th sets of stored threshold levels in time sequentially detected past sets of the detected threshold levels when a current set of said detected threshold levels is detected in a current synchronization pattern, where N represents an integer of two or greater;d. using said current set of detected threshold levels and said first to N-th sets of stored threshold levels to calculate a plurality of optimum threshold levels equal in number to said predetermined number of detected threshold levels;e. judging, responsive to said plurality of optimum threshold levels, in said data signal a communication datum carried by said radio communication signal.