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Data transmission in radiographic apparatus

  • US 4,181,850 A
  • Filed: 09/14/1978
  • Issued: 01/01/1980
  • Est. Priority Date: 03/03/1976
  • Status: Expired due to Term
First Claim
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1. Radiographic apparatus for examining a section of the body of a patient, the apparatus including:

  • a scanning member;

    a source of penetrating radiation carried by the scanning member and arranged to project the radiation to traverse a region in which the patient'"'"'s body may be disposed;

    detector means, sensitive to the radiation, carried by the scanning member and arranged to receive the radiation after it has traversed the region;

    means for rotating the scanning frame about an axis intersecting the region;

    a fixed structure supporting the scanning member during motion comprising at least said rotation;

    a plurality of slip rings fixed in relation to either said scanning member or said fixed structure and a plurality of brushes, at least one brush co-operating with each slip ring, fixed in relation to the other of said scanning member or said fixed structure to form a plurality of channels, a channel comprising at least two slip rings each co-operating with at least one brush, adapted to transmit signals, including data signals from said detectors, to electrical connections on said fixed member during said rotation, and encoder means adapted to encode the data signals according to a code suitable for AC as well as DC transmission.

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