Method and apparatus for the quick rewinding of a recording tape

Details Method and apparatus for the quick rewinding of a recording tape Method and apparatus for the quick rewinding of a recording tape

1996-11-21

1998-09-08

Nguyen, John Q.

Winding, tensioning, or guiding

Unwinding and rewinding a machine convertible information...

Carrier speed or tension control

2423336, B65H 5938, G11B 1546

Patent

active

058033874

ABSTRACT:
A system for rapidly rewinding a tape from a first spool onto a second spool of a recording device. First and second sensors respectively sense the rotational speed of the first and second spools. The thickness of the tape, the radius of a core of the spool and the total thickness of tape present on the core are stored. A calculator receives the rotational speeds, the tape thickness, the radius and the total thickness, and calculates the remaining rewinding time and provides a deceleration signal while the remaining rewinding time is sufficient to decelerate the first spool to a final rotational speed.

REFERENCES:
patent: 4338645 (1982-07-01), Mohriet et al.
patent: 4478376 (1984-10-01), Sakaguchi et al.
patent: 4516740 (1985-05-01), Yoshino et al.
patent: 4561608 (1985-12-01), O'Gwynn et al.
Patent Abstract Of Japan vol. 7 No. 150 (P-207) Jun. 10, 1981.
Patent Abstract Of Japan vol. 12 No. 361 (P-763) Oct. 28, 1986.
Patent Abstract Of Japan vol. 13 No. 175 (P-863) Jun. 30 1987 App.No. 62-164630.
Patent Abstract Of Japan vol. 13. No. 175 (P-863) Jun. 30 1987 App.No. 62-164629.

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