Method for combined transmission of digital source and control data between data sources and sinks linked by data transmission lines

摘要

The master station sends gps. of bits (10-14) to the first subscriber who alters the first two check bits (22,23) to 1, the third check bit (24) to zero, etc. Each succeeding subscriber can then recognise the reception of a check signal. A block commencement mark is assigned to a particular bit position (15) within the first gp. of a block (20). The check signal is shorter than the number of check bits in a block. The mark of the start of the check signal and that of the block commencement may be temporally sepd.