Accession Number : AD0163615

Title :   Digital Filter and Pulse Width Discriminator.

Descriptive Note : Patent,

Corporate Author : OFFICE OF THE SECRETARY OF THE ARMY WASHINGTON D C

Personal Author(s) : Ragsdale,Charles W.

Report Date : 12 JAN 1971

Pagination or Media Count : 5

Abstract : The patent describes a digital filter for use in the rate monitoring portion of an electrical heart monitor. The filter comprises a pulse width discriminator coupled to receive the outputs of a pair of Schmitt triggers and includes a first timer for rejecting short duration pulses. The timer output is only activated when signals are received from both triggers. A second and third timer combine to reject subsequent long duration pulses for a predetermined time after an original pulse of intermediate duration.

Descriptors :   (*ELECTRIC FILTERS, DIGITAL SYSTEMS), (*PATENTS, ELECTRIC FILTERS), DISCRIMINATORS, MONITORS, HEART

Subject Categories : Electrical and Electronic Equipment
      Biomedical Instrumentation and Bioengineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE