Glitch remover circuit for transmission links

Details Glitch remover circuit for transmission links Glitch remover circuit for transmission links

1991-03-29

1992-05-12

Laroche, Eugene R.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307521, 307556, 328167, H03B 100, H03K 500

Patent

active

051130980

ABSTRACT:
Glitch remover circuit for removing glitches and spikes from control signals received on a SCSI bus line that is coupled from a transmission line includes an input buffer circuit (12) and a filter circuit (14). The input buffer circuit is of a Schmitt trigger type having a transfer characteristic with hysteresis. The input buffer circuit (12) is responsive to control signals received at its input for removing noise spikes around the threshold point of its input on both the rising and falling edges of the control signals so as to provide a pulsed output voltage. The filter circuit (14) is responsive to the pulsed output voltage for generating a filtered pulsed signal at an output terminal only when the pulsed output voltage has a pulse width which is longer than a predetermined time. The filter circuit includes a delay means (28), a gating means (30) and inverter means (32).

REFERENCES:
patent: 3391389 (1968-07-01), Cruger et al.
patent: 4322641 (1982-03-01), Packard
patent: 4353032 (1982-10-01), Taylor

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