Wireless flywheel synchronization method

Details Wireless flywheel synchronization method Wireless flywheel synchronization method

1996-05-08

1998-05-05

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

Radar transponder system

342 44, G01S 1378

Patent

active

057481377

ABSTRACT:
The invention is an improved method and apparatus for synchronizing wireless communications utilizing a master source (10) for a transmitting a synchronizing pulse to multiple reader modules (20 and 28) each of which has an internal crystal oscillator (22 and 30). The synchronizing pulse periodically resets the interrogation cycle, the power burst and receive cycle, for all of the reader modules (20 and 28). Between pulses, the internal crystal oscillator (22 and 30) is used to run interrogation cycles, and thus functions as a "flywheel" to absorb fluctuations in the synchronizing pulse such as when a particular synchronizing pulse is missed.

REFERENCES:
patent: 4335426 (1982-06-01), Maxwell et al.
patent: 4361837 (1982-11-01), Malinowski et al.
patent: 5144312 (1992-09-01), McCann

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