Device for displaying electrical signals of the periodic and/or synchronizable type
First Claim
1. A device for displaying periodic synchronisable electrical signals comprising:
- input means for receiving an electrical signal to be displayed;
first memory means (17) for sequentially memorizing samples of said signal to be displayed;
recognition means (14) connected to said input means for generating a synchronization signal upon recognizing a correspondence between said signal to be displayed and said predetermined pattern;
microprocessor means (11) connected to said recognition means (14) and to said first memory means for (17) causing said first memory means (17) to store a predetermined signal and causing a plurality of cycles of the signal to be displayed to be identified in said memory upon receipt of each said synchronization signal;
processor means (18) connected to said first memory means (17) and to said microprocessor means (11) for generating horizontal and vertical cathode ray tube deflection signals from said memorized samples of said signal to be displayed for each of said identified cycles;
said processor means (18) including first comparator means (42) for comparing a reference signal with said stored predetermined signal and for generating a cathode ray tube horizontal axis synchronization output signal (x) when said stored predetermined signal is equal to said reference signal;
said processor means (18) including a horizontal deflection signal generator (52), said output signal of said first comparator (42) connected to a zeroing input of said horizontal deflection signal generator;
said processor means (18) further including a threshold comparator (57) having input means, a first of said threshold comparator inputs provided by the output of said horizontal deflection generator (52) and a second of said threshold comparator inputs supplied with a signal having an adjustable amplitude, the output of said threshold comparator connected to said zeroing input;
a cathode ray tube (20) including a screen (19) connected to said processor means;
whereby a perspective, juxtaposed, representation of the wave form corresponding to said identified cycles is displayed on said screen.
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Abstract
A device for displaying an electrical signal of the periodic and/or synchronizable type.
The main characteristic of this device is that it comprises:
a memory in which this electrical signal is sequentially memorized;
a recognition circuit for recognizing a predetermined electrical pattern and which emits a synchronization signal whenever the electrical signal to be displayed corresponds to the predetermined electrical pattern;
microprocessor means which correlates the synchronization signal with the electrical signal to be displayed and memorized in the memory in such a way as to identify in the memory a plurality of cycles of the signal to be displayed;
a cathode ray tube having a screen on which the various cycles of the memorized signal can be displayed; and
processor means which convert the memorized signal into horizontal (x) and vertical (y) deflection signals of the cathode ray tube, the processor means being operable to derive, for each cycle of the memorized signal corresponding values of the deflection signals in such a way as to generate on the screen of the cathode ray tube a juxtaposed and perspective representation of the wave forms of the cycles of the signal to be displayed.
64 Citations
16 Claims
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1. A device for displaying periodic synchronisable electrical signals comprising:
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input means for receiving an electrical signal to be displayed; first memory means (17) for sequentially memorizing samples of said signal to be displayed; recognition means (14) connected to said input means for generating a synchronization signal upon recognizing a correspondence between said signal to be displayed and said predetermined pattern; microprocessor means (11) connected to said recognition means (14) and to said first memory means for (17) causing said first memory means (17) to store a predetermined signal and causing a plurality of cycles of the signal to be displayed to be identified in said memory upon receipt of each said synchronization signal; processor means (18) connected to said first memory means (17) and to said microprocessor means (11) for generating horizontal and vertical cathode ray tube deflection signals from said memorized samples of said signal to be displayed for each of said identified cycles; said processor means (18) including first comparator means (42) for comparing a reference signal with said stored predetermined signal and for generating a cathode ray tube horizontal axis synchronization output signal (x) when said stored predetermined signal is equal to said reference signal; said processor means (18) including a horizontal deflection signal generator (52), said output signal of said first comparator (42) connected to a zeroing input of said horizontal deflection signal generator; said processor means (18) further including a threshold comparator (57) having input means, a first of said threshold comparator inputs provided by the output of said horizontal deflection generator (52) and a second of said threshold comparator inputs supplied with a signal having an adjustable amplitude, the output of said threshold comparator connected to said zeroing input; a cathode ray tube (20) including a screen (19) connected to said processor means; whereby a perspective, juxtaposed, representation of the wave form corresponding to said identified cycles is displayed on said screen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification