G - Physics – 01 – V
Patent
G - Physics
01
V
349/14
G01V 1/28 (2006.01) G01V 1/22 (2006.01) H04L 1/02 (2006.01) H04L 12/437 (2006.01)
Patent
CA 1199100
ABSTRACT OF THE DISCLOSURE Transmitting information from a central recei- ver and recorder utilizes plural series-connec- ted transmission modules , each connected to a respective data acquisition unit . The trans- mission modules are sequentially connected along plural transmission lines , at least two of which are outgoing data transmission lines for transmitting information from the central receiver and recorder to the acquisition units . At least two other lines are in- coming data transmission units to the central re- ceiver and recorder . Each transmission module has, for each outgoing line , respec- tive line receivers , information decoders , line transmitters and matri- ces of transmission line selectors con- trolled by individual information decoders , and a selector unit which insures that a signal from a selected outgoing transmission line is transmitted to the next module on all outgoing transmission lines. At least one of the incoming data transmission lines is a spare line the other being connec- ted to a coupling matrix which includes an input selector , a data selector , and an output selector for each ordinary line , and one output selector for the spare line . Each input selec- tor chooses whether the transmitted signal travels via the spare line or the associated ordinary line . The data selec- tor chooses whether the resulting sig- nal is transmitted further or data from its own data acquisition unit enters the data stream. The output selector chooses whe- ther the new resulting signal is transmitted fur- ther only on its ordinary line or is also trans- mitted further on a spare line. Each set of input selectors, data selectors and output selectors associated with an ordinary line and the output selector belonging to the spare line are control- led from the information decoder belonging to the selected outgoing transmission line via individual multiplexers .
448258
Benestad Otto
Fredriksen Paul
Hatteland Kjell
Geophysical Company Of Norway A.s.
Marks & Clerk
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