公开(公告)号：US3480738A

公开(公告)日：1969-11-25

申请号：US3480738D

申请日：1966-05-02

Applicant: UNIV SOUTHERN ILLINOIS

Inventor： MEYER HERBERT J ,  DAUGHERTY CHARLES A JR ,  NOVY JOHN R

IPC: G09B7/02 ,  G11B5/00

CPC classification number: G09B7/02

公开(公告)号：US3622236A

公开(公告)日：1971-11-23

申请号：US3622236D

申请日：1970-03-04

Applicant: UNIV SOUTHERN ILLINOIS

Inventor： NOVY JOHN R

IPC: G03B23/18 ,  G03B21/20

CPC classification number: G03B23/18

Abstract: Apparatus controls image intensity and image change timing of images produced by a plurality of image display devices. Included is a voltage integrator which produces at its output a first control voltage the magnitude of which varies as a time integral of a voltage applied to its input. Circuitry is provided which applies to the input of the voltage integrator a substantially constant voltage of a controlled polarity and of a preselected magnitude which represents a preselected image intensity rate of change. An inverter interconnected with the voltage integrator produces a second control voltage whose magnitude varies as an inverse function of the first control voltage. First and second control circuits are interconnected with the voltage integrator and with the inverter, respectively, for causing image changing and varying image intensity of images produced by a respective image display device in accordance with the respective control voltages. Accordingly, image intensity and image change timing of images displayed by the devices are coordinated to cause smoothly dissolving alternating successive display of images.