Patent ID: 8126019
Filing Date: 2012-02-28
Classification: G06F,H04J

Abstract:
1. A method for time synchronization of subscribers connected via a cyclically operating communication system, the method comprising: transmitting an item of time information to the subscribers to be synchronized; simultaneously transmitting an item of absolute time information for initialization to all of the subscribers to be synchronized; carrying out an individual synchronization by recalculating local times of the subscribers from the absolute time information and a cycle time in each case after at least one or a plurality of cycles having a known cycle time; and recalculating a local time following each individual cycle, by adding a known cycle time to a most recently calculated time; wherein the absolute time information is transmitted by one of the subscribers of the communication system to the other subscribers to be synchronized, and wherein, for initialization, the item of absolute time information is transmitted to the subscribers to be synchronized as broadcast, by a global telegram.