System for communication by way of repeatedly transmitted messages, and stations for use in such a system
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United States of America Patent
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Sep 10, 1985
Grant Date -
N/A
app pub date -
Feb 11, 1983
filing date -
Feb 15, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A description is given of a system for communication between a transmitting station (30) and a receiving station (33) by way of a message which consists of a direct succession of a number of identical code words. Each message uses only a comparatively small part of the capacity of the message channel. Each code word has at least a predetermined minimum Hamming distance with respect to any other code word, including the cyclic transpositions of the latter code word. Therefore, for the detection and reproduction of a code word it is not necessary to realize word synchronization and a given category of errors can still be detected and/or corrected. The code words may concern, for example, a transmitter or program identification in a broadcasting system or a paging code for a receiving station in a system comprising selectively addressable receiving stations as in a paging system.
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