Abstract: A head shell having accurate regulation of overhang is attachable to and detachable from a connector of a tone arm of a record player, and holds a pickup cartridge. The head shell includes a cylinder attachable to and detachable from the connector, a head shell main body, and a fixing screw for fixing the head shell main body to the cylinder. The cylinder includes a groove disposed on a cylinder external circumferential surface along an axial direction of the cylinder. A space is defined between the fixing screw and the groove in a circumferential direction of the cylinder.

Abstract: In an embodiment, an oversampled data converter includes a lowpass filter having a filter stage comprising a dynamic limiter, where the dynamic limiter having a limit set by an signal level at an input to the oversampled data converter. The oversampled data converter also includes a quantizing block comprising an input coupled to an output of the lowpass filter and an output coupled to an input of the lowpass filter.

Abstract: A sensing device for sensing coded data disposed on or in a surface includes operative circuitry including sensing means for sensing the coded data. Processing means are provided for processing the sensed coded data. An internal power supply supplies electrical power to the operative circuitry. A first inductor is connected, or connectable, to the internal power supply to enable charging thereof while the first inductor is electromagnetically coupled with an external electromagnetic field generator.

Abstract: A user operates a selection panel installed in a shop to select contents which the user wants to review. A reception unit identifies the contents based on the user's operation on the selection panel, acquires an ID of a portable device incorporated in headphones worn by the user, and transmits the ID to a management server. The management server transmits data of the contents to a transmission device, which searches for a signal electrode capable of communicating with the portable device of the user among signal electrodes that are embedded in the floor of the shop. The transmission device transmits a signal representative of the contents from the signal electrode that has been searched for, and the portable device receives the signal transmitted from the transmission device. An audio signal of the contents is output from the headphones.

Abstract: A probe storage device includes a scanner chip body having at least a mechanical ground portion provided with first and second opposing surfaces and a scan table suspension portion. A scan table including a top surface and a back surface is moveably mounted to the scan table suspension portion. A probe array chip is fixedly mounted to the first surface of the mechanical ground portion. A first plate is also fixedly mounted to the first surface of the mechanical ground portion. A second plate, having a main body portion including first and second opposing surfaces, is fixedly mounted to the second surface of the mechanical ground portion. A desiccant layer is positioned upon one of the first surface of the second plate, the back surface of the scan table and one of the first and second surfaces of the mechanical ground portion.

Abstract: A scanning system includes a base plate, an anchor structure mounted to the base plate, and a first O-topology bracket moveably mounted along a first axis of an X-Y plane to the anchor structure. The first O-topology bracket is resiliently interconnected to the anchor structure by a plurality of parallelization springs. A second O-topology bracket is moveably mounted along a second axis of the X-Y plane to the first O-topology bracket. The second O-topology bracket is resiliently interconnected to the first O-topology bracket through a second plurality of parallelization springs. The first and second O-topology brackets provide a robust, vibration resistant structure that resists both in-plane and out-of-plane deformations to enable sub-nanometer tracking.

Abstract: An apparatus comprises a movable member, first and second rigid members positioned on opposite sides of the movable member, a first suspension assembly connected between a base and the first and second rigid members, a second suspension assembly connected between the first and second rigid members and the movable member, first and second actuators coupled to the first and second rigid members along a first central axis, and third and fourth actuators coupled to the movable member along a second central axis.

Abstract: A device for contacting and/or modifying a surface having a cantilever connected to an almost plane carrier element staying apart from said surface, said cantilever having a tip at its loose end being in close contact to said surface. It is proposed that the cantilever stand out of the plane of said carrier element. Further, a method for producing the cantilever having a tip at its loose end. The device is suitable for thermomechanical writing and thermal readout of binary information, lithographic and imaging techniques, and for surface modification.

Abstract: A device for contacting and/or modifying a surface having a cantilever connected to an almost plane carrier element staying apart from said surface, said cantilever having a tip at its loose end being in close contact to said surface. It is proposed that the cantilever stand out of the plane of said carrier element. Further, a method for producing the cantilever having a tip at its loose end. The device is suitable for thermomechanical writing and thermal readout of binary information, lithographic and imaging techniques, and for surface modification.

Abstract: A device for contacting and/or modifying a surface having a cantilever connected to an almost plane carrier element staying apart from said surface, said cantilever having a tip at its loose end being in close contact to said surface. It is proposed that the cantilever stand out of the plane of said carrier element. Further, a method for producing the cantilever having a tip at its loose end. The device is suitable for thermomechanical writing and thermal readout of binary information, lithographic and imaging techniques, and for surface modification.

Abstract: A method and apparatus for regulating a DC power supply, adaptable for use with a motion sensor switch, by limiting the leakage to ground current of the power supply to comply with U.L. Standards while also enabling the DC power supply to provide a stable DC output voltage which is essentially unaffected by changes in magnitude of the AC supply voltage or changes in ambient temperature. The method and apparatus employs first and second transistors, in which the base and collector of the first transistor and the base and collector of the second transistor are coupled to receive a voltage based on the AC supply voltage, and the emitter of both the first and second transistors are coupled to drive an output circuit of the DC power supply. The emitter of the second transistor is also coupled via a first resistor to the base of the first transistor, and the collector of the second transistor is also coupled via a second resistor to the base of the first transistor.

Abstract: A system for retrieving information on a random basis from a disc having the information thereon in a spiral path around the disc. The system includes a turntable rotatable about a central spindle and adapted to support the disc thereon. An arm housing is fixedly mounted over the turntable and contains printed circuit boards having some of the electrical circuitry for the system. Also in the arm housing is a rectangular frame like cartridge holder which supports a cartridge having a stylus therein. The stylus is adapted to ride on the disc to read out the information from the disc. A piston is connected to the cartridge holder and extends through the arm housing. A motor is connected to the piston and is adapted to move the piston so that the cartridge holder is moved with respect to the arm housing and the stylus moves radially along the disc. The motor moves the stylus over the short distance of the radius so as to quickly and easily obtain random access to the information in the disc.

Abstract: A cantilever stylus with an integrally formed conical tip is provided for atomic force microscopy AFM. The method for forming a stylus includes forming a circular masking pattern on the surface of a silicon substrate and anisotropically etching the silicon to form a post under the masking pattern. The post is then isotropically etched to produce a conical silicon tip mold. In one embodiment of the invention the silicon substrate and the conical silicon tip mold are thermally oxidized to form a cantilever stylus having including a cantilever arm with a conical tip fixed to its free end. In another embodiment of the invention the silicon substrate and the conical silicon tip mold are coated with a thin film of a dielectric material to form a cantilever stylus with a conical tip. In this embodiment the backside of the stylus is coated with a conductive material and a strong electric field is applied to the tip to cause electromigration of the conductive material to the point of the tip.

Abstract: In a stereo pick-up having movable coils (14) and an SmCo magnet (22) with a high energy content, with the coil system (14, 15, 18) arranged in front of one pole face of said magnet, a yoke plate (23) of a magnetic soft material is arranged in front of said system to increase the magnetic induction in the coils. The great coercive force of the magnet is utilized for simplifying and reducing the costs of the mechanical structure in that the yoke plate is formed with two legs (26) which extend rearwardly, engage and are secured to two opposite sides of the magnet. The short-circuit of the magnet established by these legs has no noticeable impact on the induction in the air gap because of the high coercive force of the magnet.

Abstract: A stereo phonograph pick-up head or cutter has a slim elongated construction utilizing an elongated mount having connector pins at its rear end. Two elongated pole pieces fit into the mount, each having a socket at its rear end. Each coil is wound around a long straight pole rod whose rear end fits into a respective socket and whose front end bounds the transducing gap. A screening shell, part of which forms a common pole piece, slides lengthwise over the holder, and is glued thereto. The stylus unit is slid over the front end of the screening shell, with the stylus magnetic element sliding between the screening shell and pole pieces into the transducing gap.

Abstract: A transducer element assembly comprises a transducer element having a scanning surface for scanning a recording surface of a recording medium, a cantilever having the transducer element provided on a free tip end thereof and having a pair of holes provided on a root end thereof, a support part having a pair of generally conical pivots, and a magnetic coupling mechanism provided on the cantilever and on the support part for magnetically coupling the two by a magnetic attraction or repulsion. The cantilever is detachably mounted on the support part and is user replaceable. When the cantilever is mounted on the support part, the pivots engage the corresponding holes and the cantilever is rotatable about the root end thereof in a direction approximately perpendicular to the scanning surface of the transducer element.

Abstract: An arrangement is disclosed for cutting information into a record carrier made of metal, particularly of copper by means of a diamond, with the diamond body being adjusted for cutting under a canting angle and being ground in such a manner that, deviating from the prior art manner, the cutting edge does not coincide with a diamond zone of optimum hardness but deviates from the optimum position by an angle which is preferably equal to the canting angle.

Abstract: An information recording-reproducing apparatus provided with a first light beam for recording information on a recording medium and a monitoring second light beam for reproducing the recorded information simultaneously with the recording is characterized in that when only the reproduction of already recorded information is effected, a focus control signal or a tracking control signal is obtained by the use of the first light beam.

Abstract: An adapter for a phonographic tone arm for interchangeable mounting of a plug-in cartridge of a linear tracking arm to a head shell of an offset tone arm. The plug-in cartridge has a predetermined mass and center of gravity and has a plurality of small diameter contact pins projecting from the cartridge. The cartridge housing is secured to the head shell by the adapter which has a housing with a recess for accepting the cartridge. The adapter also includes a plurality of hollow terminal pins for receiving the contact pins of the plug-in cartridge. The predetermined mass and center of gravity for the plug-in cartridge enables attaining a predetermined tone arm balance without balance adjustment being necessary. The adapter housing also includes at least one groove for attenuating undesirable acoustic vibrations present in the tone arm.

Abstract: A chuck is shown for holding a stylus during manufacturing of the stylus. The invention includes a method of aligning the chuck and apparatus therefor. The chuck comprises a body and a stylus holder both of which are held separately in mutual alignment in the alignment apparatus. Epoxy is injected into a cavity of the body and the stylus holder inserted into the cavity while maintaining this mutual alignment. The epoxy, being somewhat displaced by the stylus holder, flows about the outer surface of the stylus holder completely filling the space between the two parts. When the epoxy cures, the finished chuck is removed from the alignment apparatus.

Abstract: A grounding technique for a screening shell of a phonograph cartridge. A connector pin is offset with respect to other pins of the cartridge so as to be in direct contact with one of the walls of the shell.

Abstract: A moving-coil type phono pickup cartridge in which undesirable resonances are eliminated and a vibrating unit is maintained in alignment with a predetermined center position of a magnet unit. A first non-magnetic body has a mount portion and a support portion extending perpendicularly to the mount portion. The support portion has a longitudinal hole formed therein which is intersected by a slit. A screw tightens and loosens a vibrating unit disposed in the hole by adjusting the gap width of the slit. A magnet unit is secured with a screw to the first body with a center pole piece thereof confronting a center of coils of the vibrating unit.

Abstract: A pickup stylus is secured to a plastic stylus holder at one end thereof by inserting it into the holder in a direction that bears a desired, non-perpendicular angle in respect of the longitudinal axis of the stylus holder. The one end of the stylus holder is provided with a surface which is disposed at right angles to the direction of stylus insertion into the holder in order to reduce the possibility of stylus misalignment and mislocation. The stylus holder has a cutout which is shaped and dimensioned such that the resonance frequency of the stylus holder is located near the upper end of the audible frequency range. The stylus holder, which has these and other features, is not only simple and inexpensive, but also has the desired performance characteristics.

Abstract: A stylus for stereo pickups tracking acoustic events mechanically recorded in grooves of a plate shaped record carrier comprises a soft iron tube which is adapted to embody a transducer and which has an open end into which a needle support tube is engaged and secured such as by adhesive connection. The needle is carried by the support with its axis substantially perpendicular to the axis of the support tube at the outward projecting end of the tube. The soft iron tube and the support tube are engaged in an opening of a support plate and embraced by a first elastic element engaged in the opening and elastically engaged with the soft iron tube. The construction includes a second elastic element engaged around a portion of the soft iron tube and the support tube at a location adjacent the open end of the soft iron tube and forms a damping body of a material of high internal friction.

Abstract: An improved stylus assembly for a phonograph cartridge is provided. The assembly includes an arm having a jeweled stylus attached to one end thereof. The arm is formed of a hollow aluminum tube which has been anodized so as to form an aluminum oxide skin about the outer surface thereof. The skin extends for no more than one-half the thickness of the arm.

Abstract: The stylus arm restraint comprises an element disposed substantially perpendicular to the stylus arm, and having a portion that is received in a recess provided in the cartridge housing when the stylus arm is held inside the cartridge. The reception of the stylus arm-mounted element in the cartridge recess limits motion of the stylus arm during transit.

Abstract: A pickup cartridge comprises a stylus arm having a stylus disposed at one end, and having the other end thereof flexibly supported in the cartridge. A flylead connects an electrode arranged on the stylus to a terminal mounted on the cartridge. In accordance with the instant invention, the stylus flylead is covered with a damping compound to improve the reliability of high speed scanning of the disc.

Abstract: The magnet insertion apparatus includes a first passageway along which magnets are fed. Arranged in communication with the first passageway, and at right angles to it, is a second passageway. A transport blade, reciprocably mounted in the second passageway, displaces the leading magnet to a position in a third passageway disposed parallel to and offset from the first passageway. A drive rod, reciprocably mounted in the third passageway pushes the magnet into a stylus arm held in alignment with the third passageway. According to a further aspect of the invention, the third passageway is provided with a guideway for accurately guiding the magnets. The insertion machine is additionally equipped with a reciprocably-mounted tucking element to tuck the magnets into the guideway.

Abstract: In the vibration system of a pickup cartridge of a record player, the object of preliminarily applying a required deforming bias, in a direction opposite to the direction of the vertical tracking force, to the damper which deforms with the application of a vertical tracking force, and of releasing this deforming bias when the stylus is actually applied with a vertical tracking force, is achieved by arranging the cantilever-supporting tension wire which pulls the cantilever in the rearward direction, so as to pass through the damper at a position eccentric relative to the center of this damper which is disposed between the armature-carrying cantilever and the tension wire holder.

Abstract: A phonograph pick-up or cutter has a stylus holder carrying a stylus, which cooperates with two transducers, one for each of two orthogonal directions of vibration. Each transducer has a flat coil and an associated magnet having their axes in line. For each transducer the direction of relative movement of the coil to the magnet corresponds to the direction of the coil axis and the magnetic axis. The stylus holder is connected to the moving parts of the two transducers by a coupling member. Preferably, the moving part is arranged on a support connected to the stationary part, to minimize undesired transverse movements.

Abstract: A signal pickup device for an apparatus for playing back an information storage medium such as a video disc comprises a cartridge casing mounted in a signal pickup device body, and a pickup cartridge housed in the cartridge casing and having a reproducing stylus for picking up signals from the video disc, a cantilever assembly composed of a cantilever supporting on one end thereof the reproducing stylus and a suspension member mounted on an opposite end of the cantilever, and a holder supporting the suspension member and attached to the cartridge casing for pivotable movement about the suspension member. The signal pickup device also has a coil through which a current passes for magnetically enabling the reproducing stylus to impose a stylus force on the video disc. The holder can be adjusted in angular position through the pivotable movement about the suspension member to adjust the stylus force.

Abstract: The stylus arm carriage is provided with a rotatably-mounted torsional spring element. When the carriage is driven to an off-record home position, a pad mounted in the player above the carriage engages an upstanding portion of the rotatably-mounted element, and turns it around. When turned around, the other end of the rotatably-mounted element engages a carriage-mounted stylus arm support bracket to firmly secure it in place as long as the carriage is at the home position to prevent accidental lowering of the stylus. As the carriage is driven away from its home position, the torsional spring automatically returns to its original position to free the stylus arm.

Abstract: A signal-pickup cartridge is adapted to be loaded into a holder of a signal-pickup device proper of a rotating recording medium reproducing apparatus. The signal-pickup cartridge comprises a cantilever having at its distal tip a reproducing element for picking up and reproducing a signal from a rotating recording medium rotating in the apparatus, a cartridge case supporting therewithin the cantilever and having a ceiling plate and vertical walls on opposite sides thereof, a box-shaped cover joinable to the cartridge case to cover the lower face thereof in a manner to protect the cantilever and the reproducing element, and a mechanism for joining the cover and the case in latched state. This mechanism is triggered to unlatch the cover from the case when the cartridge is inserted into the holder.

Abstract: In a moving-coil type pickup cartridge, a vibrating system including an armature wound with a coil is disposed at an open end area of a magnet with a damper being interposed between the armature and the magnet, and the armature is placed directly under the influence of magnetic flux produced between the one and other ends of the magnet for generating a voltage without using any yoke.

Abstract: The stylus lifter driving circuit gradually lowers the stylus arm until the stylus contacts a turntable-disposed record. Once the stylus/record engagement is detected, the lifter support bracket rapidly moves away from the stylus arm to prevent stylus bouncing.

Abstract: A velocity correction apparatus for a disc record player includes a permanent magnet attached to a cartridge mounted pickup arm and an electromagnetic coil secured in a cartridge supporting carriage. The coil is fixed to a supporting member which conformally engages structural features of the cartridge to guarantee proper alignment of coil and magnet. The coil support is mounted to permit limited rotation thereof to facilitate installation of the cartridge in the carriage and is mechanically biased to maintain coil-cartridge engagement and to maintain the cartridge in its normally operative position in the carriage.

Abstract: A signal pickup device for capacitance disk records comprises within a housing a stylus control unit responsive to a control signal to counteract the jitter movement of a capacitance detection stylus and to keep it on the right track while the record is spinning at high speeds. The stylus control unit is positioned so that its stylus moving element is movable in longitudinal and transverse directions parallel to the surface of the record. The stylus control unit includes a pivot member to which the stylus cantilever is magnetically secured by a permanent magnet to provide a pivotal movement in response to the control signal, whereby the stylus is rendered movable exclusively in horizontal directions. The device housing is formed with an opening at the bottom thereof to permit the stylus control unit to be secured therein in order to locate it in a lower position with respect to the record surface.

Abstract: A phonograph stylus shank is formed by annealing and rolling beryllium sheet into a tube with an overlapping seam.

Abstract: The video disc player is provided with a pair of carriage locking devices to securely lock the carriage in place during handling and shipping. Each of the carriage locking devices comprises a carriage locking pin, a device locking tab and a handle. Upon arrival of the player at its final destination, the locking devices are removed to free the carriage.

Abstract: A signal pickup cartridge is formed in two sections to facilitate assembly of a leaf spring to a stylus therein. The two sections are dimensioned to permit suspension of the stylus to the first section but protruding therefrom and connection of one end of the leaf spring to the second section with the second end of the leaf spring also protruding therefrom. The leaf spring is connected to the stylus after which the two cartridge sections are joined to form a contiguous enclosure to house the stylus assembly.

Abstract: A magnetic cartridge such as a pick-up or cutter, whose magnetic circuits are at least partly hollow, the cavities extending mainly in the direction of the magnetic flux. Each magnetic circuit and in particular each polepiece is formed at least partly with a slot communicating with the cavity and extending substantially in the same direction. This reduces eddy-current losses in the magnetic circuit, thereby improving the treble reproduction of the pick-up.

Abstract: In a moving-coil type pickup cartridge, a vibrating system including an armature wound with a coil is disposed at an open end area of a magnet with a damper being interposed between the armature and the magnet, and the armature is placed directly under the influence of magnetic flux produced between the ends of the magnet for generating a voltage without using any yoke. The magnet is a hollow cylinder having its interior free of any other magnet material.

Abstract: The stylus arm carriage is provided with a slidably-mounted plunger. When the carriage is driven to an off-record home position, a portion of the front wall of the player engages a protruding end of the plunger to drive it in. The other end of the plunger engages a carriage-mounted stylus cleaner mechanism to lock it in place while the carriage is disposed at the home position to prevent the possibility of accidental contact between a pickup stylus and the cleaner mechanism.

Abstract: Video disc stylus holders are designed to provide vertical decoupling of the pickup stylus from the stylus support arm. The compliance designed into the holder gives rise to mechanical resonant modes which affect the recovered signal in the audio range. A rigid damping element secured to the compliant section of the stylus holder by a lossy adhesive or a lossy mass rigidly secured to the compliant section of the stylus holder reduces the amplitude of the resonant modes.

Abstract: A phonograph stylus protection mechanism includes a protective zone defining member and a stylus deflector. The deflector moves the stylus to the protective zone during lateral deflection of the stylus to prevent stylus and record damage.

Abstract: A cantilever for a pickup cartridge comprising a base in the form of a solid rod or a pipe coated with a layer of a substance exhibiting a high modulus of elasticity ratio higher than 5000 Kg/mm.sup.2. The substance is for example boron or a boride.

Abstract: A pick-up assembly for use in a video disc player comprises a stylus having one lengthwise surface provided with an electrode and secured to a stylus carrier with the electrode facing in a direction away from the carrier, and a generally strip-shaped fly lead having one end bent and connected physically and electrically to the electrode by the use of an electroconductive bonding agent, thereby minimizing the required length of the expensive stylus and rendering to decrease the noise of the pick-up assembly.

Abstract: A pickup cartridge comprising a cantilever and a stylus attached to the free end of the cantilever. The cantilever is formed with a flat portion and a ribbed portion extending along the length of the flat portion so that the transverse cross-section of the cantilever is of a cruciform configuration. The flat and ribbed portions are dimensioned so that the cantilever tends to oscillate at a frequency different from the resonant frequencies of disc records.

Abstract: A lifting-lowering assembly for a stylus arm employs two flat portions having a pivot axis in the vicinity of the intersection of the two portions, a stylus arm rest on the first portion, and, an upwardly extending member on the second portion. The upwardly extending member cooperates with an electromagnetic device to rotate the assembly about the pivot axis. Air trapped under the first and second flat portions tends to permit gentle lifting and lowering operations by damping the rotational motion of the assembly.

Abstract: A stylus arm assembly is formed by heating the stylus to about 250.degree. F., and then inserting it into a section of heat shrink tubing. The subsequent heating of the joint causes the portions of the heat shrink tubing surrounding the stylus to shrink to fixedly hold the stylus in place.