Tape position display apparatus using counter roller pulses and

Details Tape position display apparatus using counter roller pulses and Tape position display apparatus using counter roller pulses and

1985-10-30

1987-12-15

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Miscellaneous

G11B 1518

Patent

active

047137150

ABSTRACT:
A tape position display apparatus including a circuit for generating first electrical pulses in response to transport of a tape, a first counter for counting the first electrical pulses, a circuit for generating second electrical pulses from a control track signal recorded on a tape in response to such transport, a second counter for counting the second electrical pulses, a subtracter for detecting the difference between the first and second counts and producing a difference signal proportional thereto, and a comparator for comparing the difference signal with a predetermined value. The second counter counts in a direction which is controlled by the compared result from the comparator, and the tape position is displayed in response to the difference determined by the subtracter.

REFERENCES:
patent: 3939490 (1976-02-01), Opelt
patent: 4062048 (1977-12-01), Weber
patent: 4394701 (1983-07-01), Igata et al.
patent: 4471391 (1984-09-01), Reagan

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