Recorders – Combined with fiducial line making
Patent
1975-07-15
1977-08-02
Hartary, Joseph W.
Recorders
Combined with fiducial line making
346 34, 346 62, G01D 934
Patent
active
040400638
ABSTRACT:
A recording device for plotting the curve of at least one measured quantity which is reproduced through an electrical signal, including a recorder, a recording or graph carrier, and means for producing relative movement between the recorder and the recording carrier into two directions extending approximately perpendicularly to each other. A time multiplexer alternatingly periodically connects the control input of the recording device to a generator for a reference line signal and to at least one generator for a measured quantity signal. In a suitable construction of the invention, it is proposed that to the particular input of the multiplexer to which there is transmitted the measured quantity signal, there is connected the output of a second time multiplexer which is periodically switched between a plurality of inputs to which there are applied a plurality of measured quantity signals, and wherein the switching of the multiplexer is effected at a predetermined beat.
REFERENCES:
patent: 2596118 (1952-05-01), Bischoff et al.
patent: 2768050 (1956-10-01), Alden
patent: 3518696 (1970-06-01), Tomota et al.
patent: 3596281 (1971-07-01), Lombardi
Hartary Joseph W.
Siemens Aktiengesellschaft
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