Method and apparatus for synchronizing timekeeping devices

Details Method and apparatus for synchronizing timekeeping devices Method and apparatus for synchronizing timekeeping devices

2005-08-16

2005-08-16

Miska, Vit W. (Department: 2841)

Horology: time measuring systems or devices

Combined with disparate device

C368S046000, C709S248000, C713S400000

Reexamination Certificate

active

06930958

ABSTRACT:
The present invention provides a method for synchronizing timekeeping devices in a system of clocks using a master/slave system and expandable data packet transmission protocol, and an apparatus for implementing such synchronizing system. The method includes embedding a circuit and data packet for transmission into each timekeeping device in the system. Time is synchronized by transmitting time information contained in the data packet protocol from the master timekeeping device to other slave timekeeping devices. Further, slave devices may transmit time information also contained within the data packet protocol to other slave timekeeping devices that are not within range of the master device. A hop count register in the data packet is also relied upon for synchronizing the time as close to the master device. Slave devices requesting time information accept the time from the transmitting device with the lowest hop count. Transmitting devices with higher hop counts are ignored, and the system is synchronized according to a time of the master timekeeping device.

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