Matches 1 - 50 out of 59 1 2 >


Match Document Document Title
8786219 Motor control device  
A motor control device includes: a feedforward computing section for computing a motion reference value and a feedforward driving force based on a motion command; a deviation compensation...
6871810 Packing of a magnetic tape to improve pack stability prior to removal from a tape drive  
A magnetic tape is packed prior to removal from a tape drive. The tape is packed by completely unwinding the tape and then completely rewinding the tape without reading or writing to the tape....
6193183 Tape tension control apparatus  
A tape tension control apparatus for controlling tape tension by supplying a current to a reel motor for driving a reel in accordance with a diameter of a tape roll includes a rotational speed...
6186430 Tape drive connection sensing assembly  
A sensing assembly for use in determining if magnetic tape within a single reel tape cartridge properly connects to a takeup reel within a tape drive during loading of the tape cartridge, so that...
6158682 Tape running apparatus  
On the occasion of stopping the tape running at a high speed, a winding radius of the tape supply reel is detected to set the tape deceleration rate (a) on the basis of the detected winding radius...
6089485 Apparatus or method for controlling tape speed  
On the occasion of stopping the tape running at a high speed, a winding radius of the tape supply reel is detected to set the tape deceleration rate (a) on the basis of the detected winding radius...
6082653 System for estimating tape pack radius using a Kalman filter  
A tape system that uses a Kalman filter to produce both an estimate of the tape pack radius and an estimate of the associated estimation error variance. The Kalman filter produces the estimates...
6068206 Film web motion control system  
A web motion control system for controlling the tension in a web advanced at a preset velocity in a web transport path between a supply reel and a take-up reel without the use of tension loops,...
5992780 Method for controlling the speed of horizontally rotatable supply turntables for tape material  
Method for controlling the speed of horizontally rotatable supply turntables for tape material. In such a method for controlling the speed by measurement on a moving tape, especially on a film...
5860610 Magnetic tape tension control device  
A torque command supplied to a tape running unit for drawing out and driving a tape wound on a first reel is modulated by a torque modulator depending on a moment of inertia of the first reel, a...
5839683 Apparatus for controlling tape speed  
On the occasion of stopping the tape being run at a high speed, a winding radius of the tape supply reel is detected, and a tape deceleration rate is set in response to the detected winding...
5836533 Hybrid arm-position/tape-tension servocontrol system  
Servomechanisms (58 and 60) control a takeup reel (12) and a tension arm (16) in a cassette recorder. The servomechanisms receive control signals (54 and 56) generated in accordance with...
5829702 Method and apparatus for counteracting interlayer slip in magnetic tape drive  
Method and apparatus are provided for counteracting tape interlayer slip in a magnetic tape drive (20) which has a swingarm (84) in a tape path between a tape supply reel and a tape take-up reel....
5773938 Apparatus for controlling speed of a rotary motor  
A speed control apparatus for a rotary motor includes a motor for rotating at a speed based on a torque command and which outputs a present angular position and a present angular speed of the...
5720442 Capstanless tape driving method and information recording and reproduction apparatus  
A load torque imposed on a take-up reel motor is estimated from the current in a take-up reel motor and the rotational speed of the take-up reel. The current value supplied to the take-up reel...
5692694 Method and apparatus for implementing servo control in video cassette recorders  
A method and apparatus for implementing servo control in a video cassette recorder (VCR) including reel motors. According to the invention, the VCR is controlled so that a control equation...
5666034 Method for controlling velocity of a rotary motor and an apparatus therefor  
A velocity control method for a rotary motor and an apparatus adopting the same estimates and corrects a disturbance applied to the rotary motor to improve a velocity control characteristic. The...
5556492 Labeling machine having a web velocity compensator device  
The labeling machine for dispensing labels from a continuous web of material to a plurality of articles is provided which includes a supply roll of labels, a dispenser for removing the labels from...
5465918 Current supply circuit and control method for supply current in a magnetic tape apparatus  
In a current supply circuit for supplying a current to a reel-drive motor in a magnetic tape apparatus, the circuit includes: a conversion table storing a relationship between a radius of the...
5400980 Tape driving apparatus  
A tape driving apparatus includes circuits for driving a supply reel and a take-up reel, circuits for detecting tape radii on the reels, a circuit for producing take-up side torque information and...
5222684 Tape driving apparatus for tape medium record reproducing apparatus  
A tape driving apparatus includes both supply and takeup reel diameter detectors so as to compute the inertia of both the reels, wherein the acceleration/deceleration torque information spent in...
5085379 Method of controlling reel drive  
A method of controlling reel drive so that a magnetic tape is transported from one reel of first and second reels to the other between them at predetermined transport velocity including the steps...
5039027 Method for control of tape tension between the reels and apparatus therefor  
This invention relates to tape tension control in a device which has a capstan disposed between a supply reel and which transport a tape wound around the supply reel to the take-up reel. While the...
5032936 Tape tension apparatus  
A tape traveling apparatus drives differentially a tracking control actuator and a tension control actuator by inputting simultaneously into a tension controller a tracking instruction signal...
4749145 In-cassette tape tensioning apparatus  
Apparatus for tensioning tape extending between two reels in a tape transport system having servos for controlling the velocity and position of the reels, includes position servo loop for...
4736900 Motor control apparatus for reel-to-reel tape drive system  
A motor control apparatus including a first motor (16) driving a first reel (2) a second motor (26) driving a second reel (1), independently operable to the first motor, and a unit (5) for...
4696439 Tape speed and tension control system for a magnetic tape cassette apparatus  
A digital tape cassette apparatus having a speed sensing roller in frictional contact with the magnetic tape within a cassette housing at a point intermediate the magnetic head and that one of the...
4394994 Tape fast-forwarding and rewinding apparatus  
A tape fast-forwarding and rewinding apparatus comprising a rotation driving circuit for driving a motor for rotating a take up or supply reel so that the tape travels at a first fast-forwarding...
4390145 Magnetic tape handling apparatus  
Apparatus for handling a perforated magnetic film (1) in synchronism with other video/audio film equipment comprises winding spools (61, 62), a head-carrier (5), a capstan drive (2) which provides...
4341363 Tape tension control circuit  
A tape tension control circuit for a helical scan video tape recorder is disclosed having a pair of tension sensors. A sensor output from a take-up (supply) side sensor is fed back to a take-up...
4163532 Tape speed control servomechanism for a magnetic tape cassette apparatus  
A speed sensing roller is mounted in position on a digital tape cassette apparatus for frictional contact with a length of magnetic tape within a cassette housing through that one of the apertures...
4156257 Motor control circuit for tape drive unit  
A tape drive for moving a tape with a prerecorded clock track past a transducer at a constant velocity. An output signal from a speed servo circuit controls the energization, and hence the speed,...
4133494 Tape driving apparatus  
A tape driving apparatus in which even if the radius of a magnetic medium such as a magnetic tape wound on a supply and/or take-up reel is varied, a current flowing in a servo motor coupled...
3917190 Transport mechanism for magnetic-tape devices, especially magnetic tape cassette devices  
In a magnetic-tape device, especially a magnetic-tape cassette device, the tape coils of which are driven by means of one or more DC motors, especially commutator motors, with ironless rotors...
3910527 Web distribution controlled servomechanism in a reel-to-reel web transport  
The parameters, i.e., acceleration/deceleration, speed, position and tension, of a length of unbuffered magnetic recording tape, which runs between the two reels of a reel-to-reel tape transport,...
3809335 WEB MOVEMENT CONTROL IN A REEL-TO-REEL WEB TRANSPORT  
The acceleration/deceleration, speed, position and tension of a length of unbuffered magnetic recording tape running between the two reels of a reel-to-reel tape transport are accurately...
3781490 WEB TENSION AND SPEED CONTROL IN A REEL-TO-REEL WEB TRANSPORT  
A reel-to-reel magnetic tape transport for a relatively wide tape which carries a number of laterally spaced data track groups and prerecorded reference tracks. Control transducer means senses the...
3769470 INFORMATION RECORDING ON ELONGATE CARRIERS WITH CARRIER PRESENCE AND/OR POSITION DETERMINATION  
Tensioning forces are applied to an elongate information carrier prior to the performance of a predetermined function relative to the carrier. The application of tensioning forces is timed and...
3734426 TAPE TENSION CONTROL IN TAPE RECORDERS  
Magnetic tape recorders, or other apparatus utilizing an information recording tape, include equipment for forming a length of the recording tape into a loop and for placing a portion of the loop...
3715090 DEVICE FOR ADVANCING A WEB OF FLEXIBLE STRIP MATERIAL  
An advance mechanism for a web of flexible strip material utilizes a flexible, transparent carrier belt having a web receiving channel therein. The web is trapped in the channel and is supported...
3672600 REEL-TO-REEL TAPE STORAGE APPARATUS  
The disclosure describes an information tape storage apparatus without tape loop storage means or tape driving means interposed along the path of the tape as the tape moves from the information...
3669382 STRIP POSITIONING APPARATUS  
A strip positioning apparatus in which the strip is wound between two motor driven spools. A sensor provides a signal representing actual position to a control. A desired position signal is also...
3628750 APPARATUS FOR MONITORING REWIND IN A MOTION PICTURE PROJECTOR  
A cartridge-loading motion picture projector is provided with a movable arm for supporting a reel within a cartridge which in turn is supported on the projector. The arm is arranged to assume an...
3606201 CONSTANT SPEED,CONSTANT TENSION TAPE TRANSPORT  
3606198 TAPE TRANSPORT  
3586260 FILM TRANSPORT AND CONTROL FOR STREAK CAMERA  
A film transport and control system for a streak camera having a film takeup reel selectively driven by kinetic energy stored in a flywheel which is rapidly accelerated from a standstill to a...
3586259 DRIVE ASSEMBLY FOR MAGNETIC TAPE RECORDER  
In a drive assembly for magnetic tape recorder a separate motor is associd with each of the reels. The motors are reversible so that the tape can be driven bidirectionally. An automatic control...
3532295 HIGH SPEED CAMERA SPEED CONTROL  
3341141 Tape transport mechanism  
3259330 Tape transport  

Matches 1 - 50 out of 59 1 2 >