The present invention relates to a method for generating control signals for an image capture device, the method being performed in a communication device comprising a first slave time generator and a second slave time generator, the communication device being connected to a first remote time server and a second remote time server, the method comprising:



synchronizing the first slave time generator with the first remote time server;
synchronizing the second slave time generator with the second remote time server;
generating a first control signal based on the first clock, and sending the first control signal to the image capture device; and
upon detecting a loss of synchronization between the first slave time generator and the first remote time server, generating a second control signal based on the second clock, and sending the second control signal to the image capture device.