86results about "Recording heads arrangements" patented technology

A robot control apparatus controls a robot arm driven by transmitting drive forces to joints from respective electric motors so that the robot arm follows a specified trajectory, based on an instruction value instructed against the electric motors. A movable range of the robot arm is divided into multiple spaces, and constraint conditions including a constraint value of a jerk for each joint, which is determined so that a load torque applied to a transmitting component of the drive force falls within an allowable range in the multiple spaces, is calculated in advance. The constraint conditions are stored in a storage unit. A calculating unit generates the instruction values for the electric motors based on the trajectory by solving an optimization problem that uses the constraint conditions stored in the storage unit as an inequality constraint.

The invention relates to tonearm tracking mechanisms in phonograph players and mechanical devices constructed for the purpose of reproducing or playing back recorded audio material previously impressed, in the form or grooves, onto a surface of a disk, which are commonly called phonograph players or turntables. Such disk is commonly called, among other similar words, a phonograph record or a vinyl disk. The present invention is a tangential tracking tonearm mechanism, wherein the tonearm bearing subassembly has two rotary bearings in the lateral plane and a coupling linkage built into a compact subassembly. The collective contribution of these elements, when properly configured and appropriately adjusted, make, during playback of audio material on a disk, reduced playback distortion over radial tracking mechanisms and closely mimics the conditions under which nearly all masters are made.

The invention refers to an optical system comprising at least two optical elements of which at least one is movable relative to the other in a direction perpendicular to the optical axis of the optical system, wherein the combination of optical elements is adapted to correct variable aberrations of at least two different orders simultaneously of which the degree of correction depends on the relative position of the optical elements. This optical system is adapted to correct aberrations which are variable and dependent on the position of the lens with respect to the subject / imaging plane. Further the optical system is adapted to correct aberrations varying along with defocus of the system. These aberrations may include second order aberrations, meaning defocus and astigmatism, third-order aberrations, meaning comas and trefoils, fourth-order aberrations, for example, spherical aberration, and further higher-order aberration terms.

An improved tone arm mounting system, for improved damping of tone arm system (100) vibrations. Tone arm system (100) is supported by tone arm pedestal (106). Adjuster screw (301) is affixed to the bottom of tone arm pedestal (106) so that adjuster screw axis of revolution (309) passes through or near tone arm system weight center of gravity (310). Adjuster screw (301), by threaded means, rotatably receives adjuster wheel (302), which is thin and is large in diameter, for easy access to its outer edge for manual or mechanical operation. Rotation of adjuster wheel (302) on adjuster screw (301) changes the height of tone arm pedestal (106) and thereby changes VTA (110). The tone arm system (100) is supported by arm board (206) without vertical connection to arm board (206) thereby damping mechanical vibrations and improving signal quality. A lightly loaded vibration damping washer (306) can be used between thrust bushing (307) and adjuster wheel (302) to damp or filter transfer of mechanical vibrations from tone arm system (100) to arm board (206) and back into tone arm system (100).

The invention relates to a pick-up arm system for the reproduction or replay of records comprising a pick-up arm chassis and a pick-up arm tube. The torsion element suspension of the pick-up arm is axially stabilized by means of cylindrical permanent magnets which are arranged in a vertical direction and have opposite polarities, said elements forming a rotating bearing or a pivot. According to the invention, the torsion element runs in a congruent manner with respect to the vertical axis of rotation through the horizontal point of rotation of the receiving element for the tube of the pick-up arm. The lower part of the torsion element is connected to a permanent magnet which is connected to the receiving element for the pick-up arm or tube and the upper part of the torsion element is fixated attached to the upper chassis of the pick-up arm. A second permanent magnet or otherwise attached of opposite polarity is fixated in the lower chassis of the pick-up arm in a perpendicular position below said permanent magnet.

An optical disk driver using a top-loading mechanism is coupled to an operational processor, such as a personal computer. The term "a top-loading mechanism" means a mechanism for inserting and / or ejecting an optical disk via a top surface of the optical disk driver. Additionally, a display unit used for the operational processor can be located on an operational processing apparatus comprising such an optical disk driver and an operational processor. The optical disk driver includes a first case (12), accommodated in a housing (10a) having the operational processor therein, a second case (11); movable from a first position to a second position, the second case (11) projecting from the first case (12) so that an optical disk can be inserted and / or ejected via a top surface of the second case (11) when the second case being located at the first position, the second case being accommodated in the first case to be operatively connected to the operational processor when the second case (11) being located at the second position.

A vibration damper for a suspension has two different viscoelastic layers and two different constraint layers. The two viscoelastic layers can be tailored to have different properties, including different viscosities and / or peak vibration frequency damping at different frequencies. The vibration damper exhibits improved vibration damping as compared to a single layer damper having the same overall thickness at critical frequencies.

The invention discloses a drive device for a record player. The device comprises a disc record, a first motor, a tone arm and an arm retraction device and is characterized in that: the arm retraction device comprises a second motor, a swinging piece, a lifting rack, a bracket wheel and a driving mechanism, wherein when a second switch is in a closed state, the second motor starts and turns on a time delay circuit; when the second switch is open and the time delay circuit is in an off state, the second motor stops rotating; the swinging piece is in linkage with the tone arm; when the tone arm is in a retracted state, a first switch and the second switch are open; when the tone arm is in a disc record working state, the first switch is closed; the tone arm is in a disc record ending state, the second switch is closed; the input end of the driving mechanism is connected with the shaft of the second motor; and the output end of the driving mechanism is connected with a rotating shaft of the bracket wheel. Compared with the prior art, the driving device of the invention drives the tone arm to automatically retract by driving the driving mechanism by using the second motor so that the overall structure is more compact; the on / off of the first switch and the second switch is realized by the action of the swinging piece; and the action has short stroke and is triggered in place, so that an action error is avoided and the arm retraction is controlled more accurately and reliably.

Systems and methods are disclosed relating to electro-mechanical devices and related computer control and audio processing systems intended to optimize playback fidelity of phonograph records. Said recordings are manufactured by a process that employs a cutting head assembly driven in a straight path from the outer to the inner-most radius of the recordable surface. However, most record turntables device that are used to play back phonograph records rely on a stylus transducer attached to the end of a pivoting arm. Instead of the linear path followed by the original cutting head, said tonearm traces an arc across the surface of the recorded disk resulting in playback distortion proportional to error in alignment of said stylus relative to the tangent of the groove. This invention addresses this deficiency and produces an optimal audio quality of playback of phonograph records.

The invention relates to a stylus arm of a single-point type opposite-pole magnetic-balance phonograph, belonging to the field of phonographs. The stylus arm of the single-point type opposite-pole magnetic-balance phonograph comprises a supporting arm assembly, a magnetic regulating assembly and a supporting part, wherein a centre shaft of the supporting arm assembly is provided with a drill pad; a tone arm weight is arranged on a seat casing; an oil bottle is arranged at the upper end of the centre shaft and is internally provided with a steel ring; the seat casing is arranged on a crown drill cover; the center of the crown drill cover is provided with an ultrahard drill stem; the top end of the ultrahard drill stem abuts against the drill pad; the seat casing is provided with a magnet A; the magnetic regulating assembly comprises a knob, a magnetic regulating casing, a movable bearing bracket, a bearing and a magnet B, wherein the movable bearing bracket is arranged on the centre shaft of the supporting arm assembly through the bearing, the magnetic regulating casing is internally provided with a screw on which a nut is arranged, and the magnet B is arranged on the nut. The invention has reasonable design, magnetic levitation action generation and stable equilibrium and achieves the effect of the adjustment level of a tracking acoustical pickup and a record audio track.

This invention is provides a means of playing LP records with minimal distortion. Low distortion is achieved by eliminating tracking error normally associated with pickup cartridges mounted to pivoting tone arms. This invention discloses a tone arm that constrains the motion of the stylus to straight radial path, mimicking the cutting path of the record lathe, supported on parallel rails by free rolling spherical bearings. Unlike many previous linear tracking tone arms, this invention does not rely on air pressure or servo motor mechanisms. The use of free rolling bearings or axles between parallel tracks fashioned from rails, rods or tubes, eliminates all sources of lateral friction other than pure static and rolling friction of the balls on the rails, rods or tubes. In the preferred embodiment, the fixed rods or tubes are driven synchronously, thereby eliminating static friction of the supporting rolling balls. Friction is further reduced using magnetic or buoyant support of the tone arm to reduce bearing load to that amount minimally sufficient to maintain full contact between the rolling balls and the upper and lower rods.

The invention discloses a sound control music player. The sound control music player includes a base; the outer side of the base is connected with a dustproof cover in a sliding fit mode; a handle isfixedly connected to the end face of the upper side of the dustproof cover. When the sound control music player is not used, dust and water can be effectively prevented, and the music disk is convenient to replace; a transmission cavity is formed in the base; a transmission cavity is formed in the base; a working cavity which is located at the upper end of the transmission cavity and provided withan upward opening is formed in the base; a synchronous assembly is arranged in the transmission cavity; an output shaft which extends into the working cavity up and down is connected into the synchronous assembly in a rotating fit mode, and a speed reduction rotating assembly is arranged on the inner wall of the bottom end of the working cavity and controlled by the output shaft. The sound control music player is simple in structure, synchronization of record rotation and magnetic pen music connection and disconnection is achieved through a sound control starting power source and a synchronous structure, and the record can be disengaged from abutting protection through negative feedback during pause.

The present invention relates to a headshell and a tonearm, which are parts of an audio turntable, and, more particularly, to a headshell and a tonearm configured such that, in connection with a swingarm-type audio turntable, the groove of an LP record can be accurately read. According to an embodiment, in connection with a headshell that connects a cartridge and a tonearm, there is provided a headshell and a tonearm for mounting a cartridge of an audio turntable, comprising a joint portion that enables the cartridge, which has been coupled, to rotate on a horizontal plane.

A record player includes a turntable, a drive motor, a non-contact transmission mechanism, a tone arm, and a housing. The non-contact transmission mechanism includes a drive-side rotor and a magnetic member. The drive-side rotor is rotated by a driving force of the drive motor. The drive-side rotor is formed of a permanent magnet. The magnetic member is constituted of a soft magnetic body. The turntable is rotated according to the rotation of the drive-side rotor by an attraction force acting on the magnetic member from the permanent magnet.

A tone arm assembly for use with a rotatable turntable. The tone arm assembly includes a tone arm body supported adjacent to the rotating turntable being horizontally pivotable about a vertically extending axis. A tone arm tube is provided having a longitudinal axis and a first end and a second end, the first end extending within and being supported by the tone arm body and the second end terminating at a shell for releaseably supporting a pick up cartridge. A counterweight is included which is translatable along a horizontal path parallel to the longitudinal axis of the tone arm tube between a first position and a second position, the first position being closest to the shell and a second position being farthest from the shell to adjust contact pressure between a stylus maintained by the pick up cartridge and a record supported by the rotatable turntable. At least a portion of the counterweight is capable of extending fore and aft of the vertically extending axis when the counterweight is positioned on its horizontal path between its first and second positions.

An electric arm lifting and turntable's auto-stop assembly of a record player is revealed. A record player is disposed with a power-driven turntable, a rotatable and movable arm disposed on one side of the turntable, a lift mechanism used for pushing against and moving the arm upward, and a sensor. The arm is moveable over the turntable. The sensor is arranged at an arm rotating shaft of the arm and used for sending a signal while detecting that the arm is moved to a lift point over the turntable. The lift mechanism is activated to move the arm upward and the turntable is stopped simultaneously for protecting a needle on the arm while the sensor detects that the arm has been moved from the turntable to the lift point.

A robot control apparatus controls a robot arm driven by transmitting drive forces to joints from respective electric motors so that the robot arm follows a specified trajectory, based on an instruction value instructed against the electric motors. A movable range of the robot arm is divided into multiple spaces, and constraint conditions including a constraint value of a jerk for each joint, which is determined so that a load torque applied to a transmitting component of the drive force falls within an allowable range in the multiple spaces, is calculated in advance. The constraint conditions are stored in a storage unit. A calculating unit generates the instruction values for the electric motors based on the trajectory by solving an optimization problem that uses the constraint conditions stored in the storage unit as an inequality constraint.

A lower inertial compact disc drive includes a rotary needle, a rotary driving device and a straight movement device. The rotary needle is installed below a read and written surface of the disc, and a center of the rotary needle is installed with a fixed reflector. The selected positions at two sides thereof are installed with a movable reflector and a balance block; and a straight movement device for controlling the reflector and the balance block to move oppositely along a straight path on the rotary needle so as to control the alternation of the reading optic path. The rotary driving device has a small inertia, and thus a small power motor may serve the object. Similarly, the movable reflector, convex lens, and balance block are light and a small power servomotor can be used. Consequently, the power is saved greatly.

The invention provides a stylus sliding mechanism and a player comprising the stylus sliding mechanism, and relates to the field of players. The stylus sliding mechanism comprises a guide rail, hollow pipes, a flange bearing, a supporting frame and a stylus, wherein the guide rail is provided with a through groove, the number of the hollow pipes is two, the two hollow pipes are fixedly arranged on a first lateral wall of the through groove side by side, a groove is formed between the two hollow pipes, the flange bearing is arranged between the groove and a second lateral wall, opposite to the first lateral wall, of the through groove in a clamping mode, and the stylus is connected with the flange bearing through the supporting frame. According to the stylus sliding mechanism, the flange bearing is limited inside the through groove in a matched mode through matching between the flange bearing and the two hollow pipes, positioning of the flange bearing is achieved, the supporting frame connected with the flange bearing and the stylus stably operate along the hollow pipes, the vibration and deviation generated when the stylus sliding mechanism slides are effectively reduced, stable operation of the stylus is guaranteed even when the stylus sliding mechanism slides for a long distance, the sound effect when the player plays music is improved, and noise and the phenomenon of distortion are reduced.

The invention discloses an energy-saving device and a method for operating the power-saving device. The energy-saving device comprises a controller, a servo motor, a power recovery unit and a reading head. The controller judges the running mode of the energy saving device. The servo motor receives a first control signal from the controller and operates according to the first control signal. The power recovery unit recoveries the redundant energy of the servo motor and converts the redundant energy into recovery power. The reading head is floated on the surface of a disc or is placed in a parking zone according to a second control signal of the controller. The controller enables the power recovery unit to recovery the redundant energy of the servo motor when the controller controls the energy-saving device not to perform the maximum energy consumption action.

A vibration damper for a disk drive suspension includes a viscoelastic damping layer, a substantially stiffer polymer constraining layer, and a metal layer interposed between the viscoelastic layer and the polymer constraining layer, such as a thin layer of aluminum vapor deposited onto the polymer constraining layer. The metal layer hides irregularities in the viscoelastic layer as that viscoelastic layer is adhered to the suspension without introducing potentially contaminating mineral particles into the polymer constraining layer.

A thermomechanical memory / logic device is disclosed. In embodiments, the thermomechanical device includes a first thermally controlled terminal (e.g., hot terminal); a second thermally controlled terminal (e.g., cool terminal / base); a stem or other structure that can be thermally expanded connected to the cool terminal; and a thermal conductive head coupled to the stem. The head can exchange heat with the hot terminal. The stem and head are between the first thermally controlled terminal and the second thermally controlled terminal, wherein the stem expands or contracts in response to heat absorbed or given off by the thermal conductive head, causing the head to move towards the first thermally controlled terminal or towards the second thermally controlled terminal until a stable state is reached. For example, bistable thermal states can be used to implement logic states (e.g., ZERO or ONE states).

A manual to automatic record player conversion includes a base unit and a blade that attaches to the tone arm. The base unit includes a movable a piston that engages the blade in order to move the tone arm upward, to specified locations on the record, or to the rest position. The position of the blade is detected by locating a reflective strip on the blade using an optical sensor, so that the piston remains positioned under the blade. The piston uses a tapered cone structure to engage a slot in the blade, compensating for any inaccuracies in position of the piston with respect to the blade. The base unit may be structured to interact with a remote control through Bluetooth or other wireless connectivity. The remote control may be a software program or “app” that is operated through a smart phone, tablet computer, or other computer.

The invention provides an image music fusion method based on music and image digital information and an interaction device. The method comprises the following steps: acquiring music and image files for fusion; skillfully mapping and fusing the time sequence digital information of the music and the space digital information in the image. The styles of a traditional phonograph are creatively combined, the effect that a painting brush draws on the record along with music is simulated, and the whole process has very good entertainment and ornamental value. Works drawn by the system contain image information and music information, so that the public can understand and accept the works very easily, and the practicability is high.

A light monitoring circuit for a manual to automatic record player conversion includes a reflected light sensor and an ambient light sensor. The reflected light sensor is used to determine whether a tonearm-raising piston is positioned under a blade secured to the tonearm. The ambient light sensor is used to detect the amount of ambient light. The signals from the ambient light sensor and reflected light sensor are provided to a circuit that modifies the signal from the reflected fight sensor based on the signal from the ambient light sensor, thereby reducing any likelihood of error due to variations in ambient light.

The invention discloses a control device automatically controlling a phonograph to shutdown; the control device comprises the following units: a rotary shaft vertically penetrating a phonograph palletpedestal; a singing rod assembly connected with the top of the rotary shaft; a light shade connected with the bottom of the rotary shaft; an optical coupler switch assembly arranged on the pallet pedestal; the light shade is in a triangle shape or sector shape. The optical coupler groove can detect the light shade linked with the singing rod; when the music of a disc is finished, the equipment can be intelligently stopped, thus stopping the disc from rotations, ensuring the disc and the phonograph not to be damaged, and preventing equipment damages under conditions in which the phonograph cannot be automatically stopped.