Method and apparatus for controlling tape transport apparatus fo

Details Method and apparatus for controlling tape transport apparatus fo Method and apparatus for controlling tape transport apparatus fo

1978-10-20

1982-12-28

Boudreau, Leo H.

Registers

Platform operated

Platform actuated traffic counters

242 7551, 242 7552, 242191, 318 7, 360 723, B65H 5938, B65H 7700, H02P 546, H02P 768

Patent

active

043663710

ABSTRACT:
Method and apparatus for monitoring movement of tape in tape transport apparatus for reel/tape assemblies such as cassettes, using tape position determination algorithms for determining absolute values of tape position as tape is driven from reel to reel using numerical constants stored in memory and periodically measured reel rotational speed ratios. The apparatus incorporates a microprocessor based controller having a CPU and program memory unit storing programs operating the CPU under program control to make the position determinations based on inputs from pulse generators representing reel rotational speeds and numerical constants corresponding to each of a plurality of known types of cassettes, which constants are derived for the one of the known types of cassettes loaded in the apparatus.

REFERENCES:
patent: 2611550 (1952-09-01), Nygaard
patent: 3564219 (1971-02-01), Mutziger
patent: 3733529 (1973-05-01), Ross et al.
patent: 3834648 (1974-09-01), Rose, Jr. et al.
patent: 3849661 (1974-11-01), Beiter
patent: 3921220 (1975-11-01), Primosch et al.
patent: 4097726 (1978-06-01), Satoh et al.
patent: 4140896 (1979-02-01), Robertson
patent: 4172231 (1979-10-01), d'Arc et al.

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