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Class Information
Number: 242/334.3
Name: Winding, tensioning, or guiding > Unwinding and rewinding a machine convertible information carrier (e.g., magnetic tape or photographic film) > Carrier speed or tension control > Diverse signal inputs > Tachometer-type signal device
Description: Subject matter wherein one of the control input sources counts turns of a rotatable element adapted to turn in proportion to a rate of movement of the carrier.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6817560 |
Combined tension control for tape |
Nov. 16, 2004 |
| 6712302 |
Delta velocity tension control for tape |
Mar. 30, 2004 |
| 6450433 |
FF/REW control apparatus, FF/REW control method and medium containing FF/REW control program |
Sep. 17, 2002 |
| 6364234 |
Tape loop/slack prevention method and apparatus for tape drive |
Apr. 2, 2002 |
| 6305628 |
Controlled tape stopping with feed forward during power loss |
Oct. 23, 2001 |
| 6305629 |
Servo error detection of bi-directional reel-to-reel tape drives using fine line tachometers |
Oct. 23, 2001 |
| 6193183 |
Tape tension control apparatus |
Feb. 27, 2001 |
| 6158682 |
Tape running apparatus |
Dec. 12, 2000 |
| 6089485 |
Apparatus or method for controlling tape speed |
Jul. 18, 2000 |
| 6082653 |
System for estimating tape pack radius using a Kalman filter |
Jul. 4, 2000 |
| 6068206 |
Film web motion control system |
May. 30, 2000 |
| 5921493 |
Tape tension control apparatus |
Jul. 13, 1999 |
| 5860610 |
Magnetic tape tension control device |
Jan. 19, 1999 |
| 5839683 |
Apparatus for controlling tape speed |
Nov. 24, 1998 |
| 5829702 |
Method and apparatus for counteracting interlayer slip in magnetic tape drive |
Nov. 3, 1998 |
| 5781359 |
Tape slack eliminating device for a cassette tape player |
Jul. 14, 1998 |
| 5746384 |
Tape tension control apparatus |
May. 5, 1998 |
| 5662287 |
Method for automatically adjusting tape travelling speed in a recorder |
Sep. 2, 1997 |
| 5639040 |
Apparatus for detectng abnormality of a tape-tension detecting means of a magnetic recording apparatus |
Jun. 17, 1997 |
| 5477400 |
Tape transport system control device |
Dec. 19, 1995 |
| 5259563 |
Magnetic recording/reproducing apparatus without capstan |
Nov. 9, 1993 |
| 5138504 |
Tape transport control apparatus for switching from high speed reel drive to low speed capstan drive without stopping the tape |
Aug. 11, 1992 |
| 5125592 |
Tape transport system with servo gain responsive to detected tape tension |
Jun. 30, 1992 |
| 5032938 |
Method and apparatus for controlling reel-to-reel tape transportation |
Jul. 16, 1991 |
| 4979691 |
Contact printer |
Dec. 25, 1990 |
| 4977466 |
Magnetic tape wind-up control method, and tape wind-up apparatus |
Dec. 11, 1990 |
| 4817887 |
Device for controlling reel driving motor |
Apr. 4, 1989 |
| 4788558 |
Method and apparatus for controlling tension in tape progressed along a feed path |
Nov. 29, 1988 |
| 4777413 |
Tape speed control device |
Oct. 11, 1988 |
| 4773616 |
Cassette tape loading apparatus |
Sep. 27, 1988 |
| 4739950 |
Constant velocity tape drive system |
Apr. 26, 1988 |
| 4736900 |
Motor control apparatus for reel-to-reel tape drive system |
Apr. 12, 1988 |
| 4696439 |
Tape speed and tension control system for a magnetic tape cassette apparatus |
Sep. 29, 1987 |
| 4664336 |
Motor control apparatus for reel-to-reel tape drive system |
May. 12, 1987 |
| 4620241 |
Tape speed control system for magnetic tape recorder |
Oct. 28, 1986 |
| 4540920 |
Relating to tape transport control systems |
Sep. 10, 1985 |
| 4525654 |
Tape transport control unit |
Jun. 25, 1985 |
| 4523133 |
Tape transport system with tension sensing bearings |
Jun. 11, 1985 |
| 4516740 |
Tape driving control apparatus |
May. 14, 1985 |
| 4513229 |
Reel servo for tape transport |
Apr. 23, 1985 |
| 4505413 |
Dual capstan drive unit for a tape recorder |
Mar. 19, 1985 |
| 4497459 |
Tape drive control apparatus |
Feb. 5, 1985 |
| 4471393 |
Tape recorder |
Sep. 11, 1984 |
| 4448368 |
Control for tape drive system |
May. 15, 1984 |
| 4442985 |
Apparatus for controlling a web transport system |
Apr. 17, 1984 |
| 4398227 |
Magnetic tape drive with adaptive servo |
Aug. 9, 1983 |
| 4390145 |
Magnetic tape handling apparatus |
Jun. 28, 1983 |
| 4385330 |
Tape drive methods and apparatus with tape slackening feature |
May. 24, 1983 |
| 4381089 |
Wound-tape radius detection system for a tape recorder |
Apr. 26, 1983 |
| 4245897 |
Moving picture camera with interchangeable film magazine |
Jan. 20, 1981 |
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