Excavating
Patent
1983-02-11
1985-09-10
Smith, Jerry
Excavating
371 37, G06F 1108, G06F 1114
Patent
active
045410950
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.
REFERENCES:
patent: 3439329 (1969-04-01), Betz et al.
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patent: 3700886 (1972-10-01), Birkin
patent: 3863215 (1975-01-01), McGrogan
patent: 4215335 (1980-07-01), Doi et al.
patent: 4360918 (1982-11-01), Ruhnau et al.
Peterson and Weldon, Error Correcting Codes, The MIT Press, 1972.
Briody Thomas A.
Smith Jerry
Streeter William J.
U.S. Philips Corporation
Ungerman Mark
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