Method of and apparatus for obtaining synchronous movement betwe

Details Method of and apparatus for obtaining synchronous movement betwe Method of and apparatus for obtaining synchronous movement betwe

1973-10-30

1976-02-10

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

352 12, 360 80, 360 91, 360 3, G11B 1518, G11B 3100, G03B 3100

Patent

active

039381943

ABSTRACT:
A method and an apparatus are described to enable one of two independently driven strips to be stopped for a predetermined period and then restarted in synchronism with the other strip which has been running continuously. Stoppage markers are provided on the first strip and synchronizing markers, which are interrupted when this first strip is to be stopped, are provided on the second strip. An integrator accumulating the output of a first sensor, responsive to the synchronizing markers on the second strip, feeds a coincidence circuit, also receiving the output of a second sensor responsive to the appearance of a stoppage marker on the first strip, which arrests the drive of the latter strip upon detection of a stoppage marker and restarts that drive after a period of interruption determined by the time constant of the integrator.

REFERENCES:
patent: 2693127 (1954-11-01), Ortman
patent: 3266862 (1966-08-01), Wagoner

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