Tape measuring method

Details Tape measuring method Tape measuring method

1983-02-28

1986-07-15

Heinz, S. J.

Dynamic magnetic information storage or retrieval

Miscellaneous

360 721, G11B 1518, G11B 2710

Patent

active

046009590

ABSTRACT:
A characteristic curve indicative of a correlation between the ratio of rotational periods of tape supply and takeup reels and a remaining time or elapsed time for a running tape is approximated by straight lines, and clock pulses having frequencies corresponding to the slopes of the straight lines are counted by counters to measure the remaining or elapsed time. With this arrangement, the remaining time or elapsed time for the tape can be measured simply by counting clock pulses with a series of counters, without resorting to a complex arithmetic circuit.

REFERENCES:
patent: 4347538 (1982-08-01), Klank

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