Method and device for synchronizing the cycle time of a number of buses, and a corresponding bus system

Synchronizes at least two TTCAN bus method and device and a bus, measuring length of the game of each TTCAN bus, and length of the game according of the determined a process at least one user for the TTCAN bus length of game's deviation, and each length of game's deviation to at least one bus user transmission, process at least one user connection length of the game of TTCAN bus's lock and according to length of game's deviation of each other, so as to an length of the synchronous game.