| 摘要 |
A collective address is defined at the transmitter end, not only by the contents of a field of bits, but also by a compulsory position of said field in a word which is larger than said field. Said word is full of zeros, outside said field. To recognize in a receiver whether a message received from the transmitter is concerned, a word having the same length as the word, transmitted with its zeros, is constructed by placing several fields (CA1, CA2, . . . , CA10) end to end, each field corresponding to the contents of one of the multiple addresses concerning the receiver, and being also placed in its compulsory position, this word is compared with the received collective address word, while one similar field in the two words is searched separately for each field, the message is recognized if such a similar field is found.
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