Detector circuit for detecting state changes of a binary signal

Details Detector circuit for detecting state changes of a binary signal Detector circuit for detecting state changes of a binary signal

1992-10-22

1994-08-09

Callahan, Timothy P.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307351, 307353, 307354, 307362, 3072721, 328146, 328151, 324133, H03K 5153, H03K 3284, G06G 714, G01R 1914

Patent

active

053369440

ABSTRACT:
A detector circuit, preferably for an integrated circuit tester, compares an unknown binary signal with two reference voltages. The outputs of comparators are fed to a 1-of-n decoder whose outputs are, in turn, fed to latch circuits. Those latch circuits comprise a feedback loop which is activated by a control signal such that they may be operated either in a transmission mode or in a mode wherein all states of the unknown binary signal A during a prescribed time window may be recorded. The outputs of latch circuits are fed to D flip-flops, in order to sample the outputs of the latch circuits.

REFERENCES:
patent: 4524291 (1985-06-01), Lehning
patent: 4680542 (1987-07-01), Krupp
patent: 4968902 (1990-11-01), Jackson
patent: 5210527 (1993-05-01), Smith et al.
Schmid et al., "Der Wellenreitende Amplitudfensterdiskriminator", Biomedicinische Technik, vol. 30, No. 1/2, Feb. 1985, Berlin Germany, pp. 7-11.

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