US 4,381,514 AGranted

Transverse mode converter for use with a longitudinal mode oscillographic recorder

OwnerPeter M. Calandrinoinventor

Life of this patent

Estimating the term…

Loading patent…

Abstract

A converter for adapting a longitudinal mode, fiber optics cathode ray tube recorder, or visicorder, to operate selectively in either the longitudinal, Y axis mode or in the transverse, X/Z axes mode. The data to be recorded is displayed, initially, upon a control oscilloscope. Samples of the horizontal sweep and gate signals of the control oscilloscope are directed to the converter. Therein, the horizontal sweep signal is conditioned and amplified to provide the high current linear ramp signal necessary to drive the horizontal yoke of the visicorder. The data is synchronized with the gate signal to ensure identity between the visual display on the control oscilloscope and the data recorded by the visicorder. The converter also includes circuitry for selectively printing start and end of trace markers, a time line marker, and external time code data in association with the recorded data, to facilitate its subsequent analysis and identification.

Claims12

Dependent claims

In a longitudinal mode oscillographic recording apparatus for continuously recording a low frequency signal by continuously drawing a radiation sensitive medium over the face of a cathode ray tube having a control element for emitting an electron beam capable of exposing the radiation sensitive medium, and including a yoke for transversely sweeping the electron beam across the radiation sensitive mediun in response to the output of a horizontal sweep generator triggered by the low frequency signal, and further including a video drive chain responsive to the low frequency signal for driving the control element, the improvement comprising:

a. means for producing a gating signal and a synchronous horizontal sweep signal, in response to a high frequency signal;
b. a transverse mode converter including:
(1) synchronization means interconnected to the high frequency signal and to said gating signal for producing a synchronized signal corresponding to the portion of the high frequency signal to be recorded;
(2) first amplifying means for amplifying said synchronized signal to produce a video drive signal;
(3) second amplifier means for amplifying said horizontal sweep signal;
(4) mode control means, operative in a first longitudinal mode position to interconnect the video drive chain with the control element and to interconnect the horizontal sweep generator with the yoke for longitudinally recording the low frequency signal;
and said mode control means being operative in a second transverse mode position alternatively to interconnect the output of said first amplifier means with the control element and to interconnect the output of said second amplifier means with the yoke for transversely recording the high frequency signal.

4 more elements

An apparatus for selectively recording upon a longitudinally drawn radiation sensitive medium a visual representation of a low frequency signal in a first longitudinal mode and a high frequency signal in a second transverse mode, said apparatus comprising:

a. a control oscilloscope interconnected to the high frequency signal, said control oscilloscope including a horizontal sweep control adjusted to provide a visual representation of the high frequency signal, said control oscilloscope further including a sample output for the gating signal and a sample output for the horizontal sweep signal;
b. a longitudinal mode oscillographic recording apparatus for continuously recording a signal, said recording apparatus including:
(1) means for continually drawing the radiation sensitive medium longitudinally over the face of a cathode ray tube having a control element for emitting an electron beam capable of exposing the radiation sensitive medium;
(2) yoke means for transversely sweeping said electron beam across the radiation sensitive medium;
(3) an internal horizontal sweep generator triggered by the low frequency signal;
(4) an internal video drive chain, responsive to the low frequency signal;
c. a transverse mode converter including:
(1) synchronization means interconnected to the high frequency signal and to said sample output of said gating signal, for producing a synchronized signal corresponding to said visual representation provided by said control oscilloscope;
(2) first amplifying means for amplifying said synchronized signal to produce a video drive signal;
(3) second amplifier means for amplifying said horizontal sweep signal;
(4) mode control means, operative in a first longitudinal mode position to interconnect said internal video drive chain with said control element and to interconnect said internal horizontal sweep generator with said yoke means for longitudinally recording the low frequency signal;
and said mode control means being operative in a second transverse mode position to disconnect said internal video drive chain and said internal horizontal sweep generator, and to interconnect the output of said first amplifier means with said control element and to interconnect the output of said second amplifier means with said yoke means for transversely recording the high frequency signal.

9 more elements

Dependencies are inferred from the claim text.