Abstract: A swinging movement in an impact sport activity, such as golf, tennis, baseball or the like, can be monitored to analyze the skill of the player by a biofeedback mechanism which measures electrical impulses created by activated nerves as muscles tense. The mechanism includes a band adapted to be placed about an arm and/or leg of the player, the band includes a pair of electrodes adapted to contact the muscle, differential amplifier means accepting the electrical voltage from the muscle, means for measuring the amplified voltage, and reporting means affording an indication of the results of the swing, such recorder including a sound emitting device, or a transmitter and computer, recording device, or printer. Preferably, the mechanism also includes a device for signalling the point of impact with an object.

Abstract: An apparatus for analyzing tracking errors in magnetic tape holds a magnetic tape in a condition useful for examining the magnetic tape to measure the configuration of recorded tracks on the recording surface of the tape.

Abstract: A method for fabricating in a mold a rotatable recording drum is disclosed. Initially, the mold is rotated and a predetermined quantity of a flowable substance is poured into the mold cavity and is centrifugally flung against the mold wall to form a mold layer with a smooth inner surface. Next, a surface substance is poured into the mold cavity and is allowed to harden against the mold layer. A core outer layer substance is then poured into the mold cavity and allowed to harden against the surface substance, and rotation of the mold is stopped. The mold layer fluid is removed, and the cavity inside the outer layer is filled with a core inner layer substance which is allowed to harden before the drum core is removed from the mold cavity. Following removal of the core from the mold cavity, the hardened surface substance may be vacuum coated, and a protective overcoat applied to the core. The drum core and the surface substance can also be formed separately.

Abstract: A method and an apparatus is provided for reducing the effects of laser noise and for improving modulation transfer function in scanning a surface of a photoconductive plate with a spot of light through use of a time-light intensity integration method. The method comprises pulse synchronization or infrared synchronization to control activation and deactivation of signal detection laser light beams.

Abstract: A conductive coating on a thin glass strip senses the image signal on a selenium coated photoimaging plate as the plate is scanned with a laser beam. The glass strip is suspended over the surface of the plate with finger-like members. The finger-like members that support the strip are spring loaded downward toward the plate, but are suspended above the plate by a pressurized cushion of air. The strip bends to assume the surface profile of the plate, thus maintaining uniform spacing even though the plate may not be flat and may even have a varying profile along its length.

Abstract: The present invention is an apparatus and method for aligning a card with optically readable annular data region thereon. The card is moved along a generally linear track and pushed onto a rotatable card holder which is secured in a first position for receiving the card. The data card is aligned on the card holder so that the annular data region thereon is in a desired registry with a focused laser beam. The card holder and card thereon are then rotated about a central axis of the annular data region and the laser beam is moved across the annular data region of the rotating card for data transfer. Once the desired data transfer is accomplished, the card holder rotation is stopped, the card holder is realigned in its first position and the card removed from the card holder. During rotation of card holder, a plurality of flyweights flatten the data card as a function of the rate of rotation of the card holder.

Abstract: A method for fabricating in a mold a rotatable recording drum. Initially, the mold is rotated and a predetermined quantity of a flowable substance is poured into the mold cavity and is centrifugally flung against the mold wall to form a mold layer with a smooth inner surface. Next, a surface substance is poured into the mold cavity and is allowed to harden against the mold layer. A core outer layer substance is then poured into the mold cavity and allowed to harden against the surface substance, and rotation of the mold is stopped. The mold layer fluid is removed, and the cavity inside the outer layer is filled with a core inner layer substance which is allowed to harden before the drum core is removed from the mold cavity. Following removal of the core from the mold cavity, the hardened surface substance may be vacuum coated, and a protective overcoat applied to the core. The drum core and the surface substance can also be formed separately.

Abstract: An apparatus for providing a bias magnetic field coincident with the read/write laser in a magneto-optic recording system is disclosed, with special utility for systems wherein the thickness or configuration of the media necessitates a functioning bias magnet being located on the same side of the media as the read/write laser.

Abstract: An apparatus for reading and recording information on a tape record medium has the tape wound and advanced along a helical path on the outer cylindrical surface of the drum. A system for writing and reading information on the tape is positioned entirely on the outside of the drum and is stationary relative to the rotation of the drum and movement of the tape thereon. Tape is supplied to the helical path on the drum by one or more tape reels rotatably mounted within the drum and aligned coaxially with the rotational axis of the drum. The drum and tape thereon are rotated at a high rate relative to the stationary read/write system, and the tape is advanced along the helical path at a relative slow rate. The drum and tape thereon are configured in the form of a cartridge, removeable as a unit from the optical system.

Abstract: A wallet-sized data card includes a magneto-optic active region configured for rotational recording of data. A fender projecting outwardly from the card is disposed adjacent an outer circumference of the recording region for protecting the magneto-optic recording region.

Abstract: A tape cassette having mounted between the two closely adjacent tape reels an oscillating sensor arm in substantially continuous contact with the reeled tape on the two reels, and a digital counter mechanism which is advanced one step for each double oscillation of said arm.

Abstract: A tape use counting mechanism in a cassette comprising a numbered disc which is advanced one numbered space for each play cycle by friction drive from a supporting tape reel under control of pawls actuated by a lever contacting the reeled tape.

Abstract: A driver for rotating a magnetic head affixed thereto having a housing, an armature rotably mounted within the housing, at least two field magnets within the housing and positioned around the axis of rotation for the armature, a driving coil and a concentrator for concentrating the magnetic flux from the field magnets so as to return the armature to a home position when no current is applied to the driving coil. The driver is affixed in the housing concentric with at least a portion of the armature such that a current passing through the driving coil develops a magnetic field polarizing the armature and causing a peripherential attraction of the armature toward an adjacent one of the field magnets and a corresponding repulsion of the armature from an adjacent other of the field magnets, thereby tending to rotate the armature a direction and distance proportional to the magnitude and polarity of the current.

Abstract: An assembly for use in an analog audio record/playback or playback system to achieve and maintain the same phase relationship between the recorded signals upon playback, as was present when the signals were originally recorded comprising generally, playback transducer means including a playback head, phase comparison to determine the phase relationship of the signal played back by the playback transducer means and to output a signal which is proportional to the magnitude and direction of any phase difference present, and electrically responsive driver means to adjust the playback transducer means to dynamically compensate for the phase error by rotating the playback head.

Abstract: A device for slowing down the movement of the armature within a solenoid comprising a resilient container having a predetermined internal volume, and a dilatant material filling the container which material has as one of its properties at ambient temperatures, a non-resilient deformation when subjected to slow steady state stress, and a highly resilient resistance to deformation when subjected to rapid shock-like stress, whereby the container is connected to the solenoid in a manner affording its compression as the armature moves within the solenoid.

Abstract: A device for composing graphics comprising a flash lamp for irradiating portions of strip material through a template when an arm supporting the lamp is moved to an exposure position at an exposure station. The template is pressed against the strip at the exposure station between a resilient frame-mounted pad and a transparent plate on the lamp arm by a toggle linkage between the frame and the arm. The template has a rectangular array of windows and is manually positionable on locating pins at the exposure station for different exposures. A positive image of each window is provided on the template, and the locating pins are movable via movement of the lamp arm from a preview position where the image is at the exposure station so the operator can see where the graphic will be formed to an exposure position with the associated window located at the exposure station for exposure.

Abstract: A locating and loading mechanism for a magazine used in a recording and/or playback machine. The magazine includes a generally cylindrical hub portion; an endless length of strip material wound in a coil about the hub portion and extending from the innermost wrap of the coil partially across a central opening in the hub and around the side surface of the coil to the outermost wrap of the coil; and a case enclosing the hub portion and endless length of strip material having three spaced openings. The machine includes three spaced support pins adapted to enter the openings in the case and accurately support the magazine at a station on the machine with respect to drive members, a guide, and transducers in the central opening of the hub. A movable frame portion is adopted to receive the magazine and guide the magazine onto and off of the support pins at the station.

Abstract: A composite strip material for forming graphics such as letters, numbers, symbols or pictures. The strip includes an accepting tape comprising a layer of latent adhesive material in face-to-face contact with a layer of microgranules lightly adhered to a donor web. At least one of the layers bears a radiation absorbing pigment which, when selectively heated in accordance with a pattern of radiation, momentarily softens adjacent portions of the adhesive material. Upon separation of the accepting tape and donor web, microgranules transfer to the accepting tape only in irradiated areas.

Abstract: A composite strip material for forming graphics such as letters, numbers, symbols or pictures. The strip includes an accepting tape comprising a layer of latent adhesive material in face-to-face contact with a layer of microgranules lightly adhered to a donor web. At least one of the layers bears a radiation absorbing pigment which, when selectively heated in accordance with a pattern of radiation, momentarily softens adjacent portions of the adhesive material. Upon separation of the accepting tape and donor web, microgranules transfer to the accepting tape only in irradiated areas.