Timing signal generator

Details Timing signal generator Timing signal generator

1996-07-19

1997-12-30

Chin, Stephen

Pulse or digital communications

Synchronizers

375359, 375362, H04L 700

Patent

active

057039135

ABSTRACT:
A timing signal generator includes a demodulator for an input modulated signal to provide first and second baseband signals having a quadrature relation relative to each other. A converter is used to convert the first and second baseband signals into angle data representing a phase, and a calculator is used to calculate a difference between the phase represented by current angle data and the phase represented by previous angle data, preceding the current angle data by a 1-symbol interval. The calculator outputs data representative of the calculated phase difference. A further converter converts the calculator output data into a binary reference signal responsive to which of predetermined divided regions contains a point corresponding to the calculated difference data. Also included is a generator for generating a symbol timing signal in synchronism with the binary reference signal.

REFERENCES:
patent: 4246654 (1981-01-01), Malm
patent: 5005186 (1991-04-01), Aono et al.
patent: 5170415 (1992-12-01), Yoshida et al.
patent: 5239273 (1993-08-01), Hedstrom et al.

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