Method and communication system for synchronizing two devices with a predeterminable data transmission method

A communication system for synchronizing two devices with a predeterminable data transmission method from a set of data transmission methods that differ with respect to their error protection for data to be transmitted, said communication system comprising:

• a first device;
• and
• a second device connected to said first device,
• said first device and said second device respectively for exchanging a first synchronization message and a second synchronization message, said first synchronization message having an item of information identifying a data transmission method having a highest-level error protection that can be executed by said first device, said second synchronization message having an item of information identifying a data transmission method having a highest-level error protection that can be executed by said second device,
• said second device for determining said data transmission method of said received first synchronization message from said received first synchronization message,
• said first device for determining said data transmission method of said received second synchronization message from said received second synchronization message,
• said first and second devices for forming an additional synchronization message at one of said first and second devices by which said respectively determined data transmission method can be executed, said additional synchronization message identifying said data transmission method that can be executed by both said first device and said second device;
• said first and second devices for sending said additional synchronization message to an-other of said first and second devices;
• said first and second devices for determining said data transmission method of said additional synchronization message at said other of said first and second devices from said additional synchronization message, and
• said first and second devices for synchronizing said first device and said second device with said determined data transmission method.

A method for synchronizing devices with a common data transmission method from a set of data transmission methods that differ with respect to error protection for transmitted data, said method comprising:

• exchanging between a first device and a second device, a first synchronization message from the first device and a second synchronization message from the second device, the first synchronization message having an item of information identifying a data transmission method having a highest-level error protection that can be executed by the first device, and the second synchronization message having an item of information identifying a data transmission method having a highest-level error protection that can be executed by the second device;
• determining the data transmission method of each of the first and second synchronization messages received at the second and first devices, respectively, by comparing each of the first and second synchronization messages to at least one identifier of a corresponding data transmission method, beginning with a lowest-level data transmission method;
• forming at one of the first and second devices an additional synchronization message identifying the common data transmission method that can be executed by both the first and second devices;
• sending the additional synchronization message from the one of the first and second devices to another of the first and second devices;
• determining at the other of the first and second devices the common data transmission method of the additional synchronization message;
• and
• synchronizing the first and second devices to use the common data transmission method.

A communication system for synchronizing devices with a common data transmission method from a set of data transmission methods that differ with respect to error protection for data to be transmitted, said communication system comprising:

• a first device transmitting a first synchronization message having an item of information identifying a data transmission method having a highest-level error protection that can be executed by said first device;
• and
• a second device, coupled to said first device, receiving the first synchronization message from said first device and sending to said first device a second synchronization message having an item of information identifying a data transmission method having a highest-level error protection that can be executed by said second device,
• said first and second devices determining the data transmission method of the second and first synchronization messages, respectively, by comparison with at least one identifier of a corresponding data transmission method, beginning with a lowest-level data transmission method, one of said first and second devices forming an additional synchronization message identifying the common data transmission method that can be executed by both said first and second devices and sending the additional synchronization message to another of said first and second devices which determines the common data transmission method of the additional synchronization message, so that said first and second devices are synchronized to use the common data transmission method.