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CobaltIP-faceted-search-demo
Match Document Document Title
7944803 Tone arm assembly  
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...
5587982 Optical disk drive device capable of detecting misplacement of optical disks  
An optical disk driving apparatus having a function for preventing misplacement of an optical disk within the optical disk driving apparatus, includes: a main body having an opening through which...
5452278 Disc recognizing method for an optical disc playback apparatus  
A disc recognizing method prevents a leaf spring of a pickup from being deformed in an optical disc playback apparatus including a pickup transfer for moving a pickup and a plurality of starting...
5239426 Recording or reproducing apparatus adapted to intermittently detect and memorize loading or ejecting of a recording medium  
A recording or reproducing apparatus capable of replacing a recording medium is provided with a switch operable in connection with the loading or ejection of the recording medium, a circuit for...
5226028 Centering mechanism for automotive disk player  
A vehicle disk player is disclosed in which a disk is inserted through a disk inserting opening, the disk is fixedly mounted on a turn table by a clamper arm when conveyed to a predetermined...
5144503 Process for controlling an access position of a recording head which enables recording at each recording position on a recording medium without double recording and a device therefor  
A recording apparatus arranged to shift a recording head in a given direction relative to a record bearing medium and to perform recording in each shifted position. In positioning the recording...
5119354 Disk reproducing apparatus  
A disk playing apparatus is capable of playing a plurality of disks or disks of different diameters. A disk transfer mechanism is provided between a magazine for storing the plurality of disks and...
5072317 Recording and/or reproducing apparatus having a mechanical memory for storing medium loading and unloading information  
A recording or reproducing apparatus is provided with a device for detecting and memorizing the replacement of a recording medium made even after a power supply is cut off. This prevents any error...
5060220 Protection circuit for optical disc players  
A protection circuit for optical disc players which can prevent the unnecessary radiation of laser beams due to a malfunction of the player. The circuit includes a laser radiating and detecting...
5051849 Recording apparatus including a pre-recording positioning function  
A magnetic disc recording apparatus comprises a search mechanism for searching for an unrecorded position on the disc to properly continue the recording to the same disc and a head control...
5040159 Mechanical sense of touch in a control system  
Disclosed is an optical disk handling system, called an autochanger, having two control systems to provide the six motions necessary to move optical disk cartridges from storage holding cells to an...
5031169 Recording disc player for discs of different diameter  
A disc player is provided that has disposed in it an insertion opening through which discs having different diameters can be inserted. A disc driving mechanism, including a turntable, is located...
5020047 Method and device for radiation beam scanning a radiation-sensitive surface of a rotating carrier  
A method and device are revealed for scanning a radiation-sensitive layer (2) of a rotating carrier (4) with a constant linear velocity by means of a radiation beam (5) which is directed towards...
4979160 Front loading disk player  
A front loading disk player has an insertion slot for receiving variable sizes of disks to be played. As the disk is inserted it encounters pinch rollers on the free ends of pivoting arms. The...
4864437 Head loading velocity control  
A disc drive 22 having a head 28 actuated by an actuator 27 includes a head loading velocity control for successfully and accurately loading the head 28 onto a disc 26 so as not to cause damage to...
4752921 Record player with means for capturing recording and scanning angle  
A record player with a scanner for record disks is provided, where the vertical recording track angle α is to be placed within predetermined limits, but where, in general, the value of α is not k...
4686665 Mode switching device in a disc playback device  
A mode switching device in a disc playback device comprises a loading device for transferring a disc or a case housing a disc between an eject position in which the disc or the disc case is...
4574372 Locking device for record player apparatus  
A laser disk record player particularly adapted for mobile applications such as in portable players and automobile mounted players. The player is provided with locking means for preventing free...
4527265 Position memory for laser reproduction unit  
A record player apparatus with a laser reproduction unit and a movable support for moving the reproduction unit across the surface of a record as the record is rotated during a playing operation to...
4453245 Apparatus for detecting position of a reproducing transducer in a rotary recording medium reproducing apparatus  
An apparatus for detecting position of a reproducing transducer in a rotary recording medium reproducing apparatus which reproduces an information signal recorded in a rotary recording medium by a...
4441178 Method of correcting a position of a disk record on a turntable  
This invention pertains to a method of correcting a position of a disk record on a turntable for positioning the record on the turntable in a concentric manner relative to the rotational center of...
4412321 Record changer  
A record changer for a record playing apparatus of the type including a center spindle on which records are adapted to be held and then dropped onto a turntable to be played, includes a tone arm...
4375093 Intermusic detecting circuit for automatic music selecting device  
An intersong detecting circuit for an automatic music selecting device for a record player in which intersong intervals are accurately detected even for a disc having irregular reflectivities or...
4358842 Record player  
A record player is described having a turntable which is rotated by a pulsed motor energized from a motor drive circuit. The motor driving circuit includes a negative feedback servo loop which...
4351046 Video disc player having carriage detent mechanism  
A video disc player is fitted with a mechanism for detenting a stylus carriage against a travel limit stop. The detent mechanism includes a toothed member disposed on the carriage which engages a...
4301528 Tone arm mechanism  
A tone arm system for a record player is provided having servo-controlled record warp compensation means including a moving coil motor for driving the tone arm vertically and a moving magnet motor...
4280705 Record player  
In a record player an overload coupling is arranged between a command disk and a pick-up arm controlled by the disk. The coupling comprises two coupling members which are pivotable relative to each...
4247118 Record players  
A muting switch for co-operation with the phono sockets of a record player to short circuit the leads from the pick-up, which are connected to the phono socket, at all times except when a record is...
4205853 Record side identification apparatus for video disc player  
A record is removably subject to occupancy of a protective caddy comprising a jacket and a record retaining spine. The record is enclosed in the caddy such that a first side of the record is...
4191382 Turntable rotation control device  
A turntable rotation control device has an electric motor reversibly rotatable. A mechanism is used for horizontally swinging a tone arm towards the inner circumference of a record by the rotation...
4170360 Apparatus for adjusting the position of an arm in a record playing device, such as a phonograph or the like  
Apparatus for controlling an arm of a record player of the type having a base, a turntable upon which a record disc rotates, a pivot support extending upward from the base for supporting the arm...
4138121 Tone arm assembly  
A tone arm assembly for record players having a first motor for rotating a tone arm in the vertical direction, a second motor for rotating the tone arm in the horizontal direction with respect to a...
4121834 Pick-up device for a phonograph tone arm  
A device for automatically lifting a phonograph stylus from a record after the end of the sound groove has been played includes a pedestal base mounted on a support plate adjacent the turntable and...
4114893 Gramophone equipment  
Gramophone equipment incorporating photoelectric scanning to detect bands between record tracks; an electronic counter to count the detected bands; a selector for making track selections; an...
4113263 Phonograph record player  
In a phonograph record player, an improved control mechanism is provided for effecting lead-in movement of the tone arm from an elevated rest position outside the perimeter of the turntable to an...
4111431 Record player with record determining means  
A record player having a centrally located record presence and record size sensor is disclosed. The record presence and size detector includes biasing elements and switching elements which are...
4111432 Automatic device for positioning the tone arm of a record player  
Device for driving the tone arm of a high-fidelity record player consists principally of an elongated member fixed to the shaft of said arm and gripped between another elongated member and a spring...
4102536 Phonograph pickup device  
An improved phonograph pickup device having a pivotally mounted tone arm on which a drive coil and a sense coil are mounted and are coupled to a magnetic field. The level of current flow to the...
3997716 Disc record locked groove escape apparatus  
In a system for playing back prerecorded signals from a spirally-grooved disc record by a groove-engaging signal pickup secured to a pickup arm when relative speed is established therebetween, a...
3944754 Record disc recording system with signal amplitude controlled by stylus arm position  
A record disc recording system comprises a circuit for generating a control signal voltage corresponding to the position of a cutter head on a disc. The system also includes a limiting amplifier...
3907304 Switching device, in particular for a record player or changer  
A switching device for the control operations initiating the playing cycle of a phonograph record, including a drum body which is rotatable by means of a switching member, for controlling the...
3894180 Head height control system  
A transducer assembly hydrodynamically supported above a surface has its spacing from the surface maintained at predetermined values by a fluid control regulator which responds to changes in fluid...
3870319 DICTATING AND PLAYBACK APPARATUS  
A combination dictating and playback apparatus having a single transducer and tone arm, cooperable with a pregrooved disc, with means to automatically switch from recording condition to playback...
3854730 CONTROL MECHANISM FOR PHONOGRAPH RECORD PLAYER  
In a phonograph record player having a turntable rotatable by a motor, and a tone arm for carrying a pickup with a stylus to track the groove of a record on the turntable and being mounted for...
3647222 ORIENTATION INDEPENDENT PHONOGRAPH  
In a miniature record player for reproducing diminutive records, there is provided a rotatable turntable and a pivoted tone arm. A pickup cartridge is mounted on the tone arm for playing records...
3637221 AUDIOVISUAL EDUCATIONAL APPARATUS  
An audiovisual educational apparatus employing a disc record having audio messages recorded in spaced relationship and film strips mounted on an image carrier. The movement of a tone arm is...
3441283 RECORDING AND/OR PLAY-BACK APPARATUS  
3437763 RECORD REJECT SYSTEM  
3403233 Method of making grooved records with compensation for reproduction errors  
3360257 Record repeating device  
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