公开(公告)号：US3636336A

公开(公告)日：1972-01-18

申请号：US3636336D

申请日：1969-09-16

Applicant: BENDIX CORP

Inventor： EVERETT SAMUEL R ,  SHEAR WAYNE G ,  ARDILA JORGE E

IPC: G06F17/10 ,  G01S11/08 ,  G06F1/02 ,  G06F7/68

CPC classification number: G01S11/08 ,  G06F1/02 ,  G06F7/68

Abstract: Each pulse in a pulse train resets a counter to a predetermined initial state. A frequency generator generates a plurality of timing signals each of which comprises a different predetermined frequency. A gating means controlled by the state of the counter selects one of the timing signals to count down the counter. The state of the counter at the time of counter reset is thus related to the pulse repetition frequency of the pulses. Scaling of the system parameters permits the system to generate a sequence of straight line segments which approximate a desired function. In particular, proper scaling of the system parameters permits the system to operate as a digital altitude rate generator if the pulses represent fixed values of altitude change.