Winding – tensioning – or guiding – Unwinding and rewinding a machine convertible information... – Carrier speed or tension control
Patent
1994-10-13
1995-12-12
Nguyen, John Q.
Winding, tensioning, or guiding
Unwinding and rewinding a machine convertible information...
Carrier speed or tension control
2423334, 2424122, 2424133, 2424135, 2424206, 348 96, B65H 5938, G03B 2150, G11B 1546, H04N 5253
Patent
active
054742455
ABSTRACT:
Film transport apparatus for a cine-video system in which video signals are produced from film that is driven between supply and take-up reels. The film, which may be wound in A or B configuration on each reel, is threaded automatically about a film drive mechanism which transports the film from the supply reel, through a film gate to the take-up reel. Tensioning apparatus imparts tension to the film at the entry and exit of the film gate which, during the threading operation, causes the respective reels to rotate before film actually is transported therebetween. The direction in which each reel rotates to unwind film therefrom when tension is imparted serves to identify whether the film is wound in A or B configuration. Advantageously, a programmable processor controls the film transport speed in response to a user-actuated knob; and this same processor serves to detect when the film approaches its end on the supply or take-up reel.
REFERENCES:
patent: 3117183 (1964-01-01), Mullin
patent: 3405857 (1968-10-01), Albrecht
patent: 3454714 (1969-07-01), Henriksen et al.
patent: 3666204 (1972-05-01), Gysling
patent: 3672600 (1972-06-01), Carlson et al.
patent: 3718289 (1973-02-01), Alaimo
patent: 3769457 (1973-10-01), Valenta, Jr. et al.
patent: 3825675 (1974-07-01), Bradford et al.
patent: 3856990 (1974-12-01), Favreau et al.
patent: 4281351 (1981-07-01), Poetsch et al.
patent: 4319280 (1982-03-01), Roos et al.
patent: 4356514 (1982-10-01), Armstrong et al.
patent: 4597547 (1986-07-01), Tarpley, Jr. et al.
patent: 4696440 (1987-09-01), Harigaya et al.
patent: 4739948 (1988-04-01), Rodal et al.
Baron Michael L.
Doliton Michael
Foung Paul
Gunday Erhan H.
Ishmael Erwin P.
Frommer William S.
Nguyen John Q.
Sinderbrand Alvin
Sony Electronics Inc.
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