Patent ID: 8300687
Filing Date: 2012-10-30
Classification: G04G,G04R

Abstract:
1. A radio receiver method, said method comprising: receiving, in a radio receiver circuit, a phase modulated (PM), pulse width modulated (PWM)/amplitude shift keyed (ASK) broadcast signal encoded with time information frames; extracting, in said radio receiver circuit, said time information frames from the phase of said received signal; wherein each said time information frame includes a timing information field for timing tracking based on a synchronization sequence field spanning multiple seconds, a current time field for time acquisition and an additional information field for event scheduling; wherein said phase modulation comprises pulse width modulation/amplitude shift keyed modulated data transmitted with and without a phase reversal; and wherein information represented by said phase modulation is independent of the information represented by said pulse width modulation/amplitude shift keyed modulation.