Abstract: Disclosed is a braking mechanism for use in a magnetic recording apparatus essentially comprising a single cam gear and a brake-releasing member. The cam gear and the brake releasing member are so operatively connected that a stepwise rotation of the cam puts selected brake releasers in different brake releasing positions. Specifically in the first releasing position only the supply reel of the apparatus can rotate freely; in the second releasing position the take-up reel of the apparatus can rotate freely, and the supply reel can rotate against a relatively weak resistance; in the third releasing position the take-up and supply reel brakes can rotate freely together; and in unreleased position the supply and take-up reels cannot rotate.The sequential releasing of selected brakes assures coordination of braking operations appropriate for tape-loading, unloading, quick winding, playing and stopping.

Abstract: A driving force branching gear mechanism, which is useful for a tape recorder provided with a rotary head, etc., is disclosed, in which a driving gear consisting of two great diameter cam gears fixed to each other in one body and two small diameter cam gears driven by the two great diameter cam gears, repsectively, are disposed and they are so arranged that each of the small diameter cam gears is driven, only when its gear section is in opposition to each of the great diameter cam gears and that its cut-off portion for fixation is located on the projecting portion of the cam section of each of the great diameter cam gears and fixed there, when the cam section of each of the small diameter cam gears is in opposition to the cut-off portion of the gear of each of the great diameter cam gears.

Abstract: A focusing control method and apparatus employing a photodetector for generating a focusing error signal, a tracking error signal and an RF signal, and a closed loop focusing servo circuit responsive to the focusing error signal applied thereto for focusing a light spot in position on an optical disc. The focusing error signal is detected synchronously with the tracking error signal to produce a first periodic function signal. The focusing error signal is detected synchronously with the RF signal to produce a second periodic function signal. The tracking error signal is converted into a sin-wave signal having a predetermined amplitude. The RF signal is converted into a cos-wave signal having a predetermined amplitude. The first periodic function signal is multiplied by the cos-wave signal to produce a first component signal. The second periodic function signal is multiplied by the sin-wave signal to produce a second component signal.

Abstract: The cassette loading/ejecting device in a tape player includes a slide plate slidable from front to rear of the tape player and a pack guide connected to the slide plate to carry the cassette inserted into the tape player so as to effect cassette loading and ejection by displacement of the cassette between its inserted position and its play position in accordance with movement of the slide plate, and the cassette loading/ejecting is characterized in that a drive mechanism for transmitting motor rotation to the slide plate is interposed between a one-way rotatable motor and the slide plate, the drive mechanism is provided with a changeover mechanism to invert the rotation transmitted from the motor, the changeover mechanism includes a changeover plate disposed rotatable adjacent to a drive gear linked to the motor, and a changeover gear carried by the changeover plate for engagement with the drive gear, an inversion plate disposed adjacent to one end of the changeover plate for simultaneous rotation with the s

Abstract: An automatic tape-pack loading mechanism adopted in a tape player, in which a rack portion is formed on a tape-pack holder which serves to receive a tape pack and drop it into the playing position, in which a motor-driven rotating piece is so provided as to be engaged with, and disengaged from, a rotary member engaged with said rack portion, and in which a lock link is disposed on a member supporting said rotary member to change the relation from engagement to disengagement or vice versa between said rotary member and rotating piece.

Abstract: An auto-loading mechanism in a tape player which comprises an operational member driven by a motor to slide and formed with a first, second and third operational portion which engage with a lock plate for locking a slide member for sliding while being contact with an inserted tape pack, an insertion frame for setting the tape pack in the playing position as well as a shift member for shifting a head plate or a member operatively connected to those members, and, the operational member further comprises a spring for storing ejecting force during the loading time by driving the motor.

Abstract: A magnetic tape recording/reproducing apparatus having a loading assembly which comprises a rotatable member driven by a motor mounted on the tape deck, a rack member interlocking with a tape pack inserted within said tape deck so as to be slidable with respect to said tape deck so that said rack member is allowed to slide due to rotational force of said rotatable member.

Abstract: An interlocking gear control mechanism, comprising a driven gear engaged with a drive rotary member and a rack member operated as engaged with the driven gear, and a gear lock piece to put said driven gear in engagement with the drive rotary member, an elastic member to give the gear lock piece a force for engagement of the driven gear with the drive rotary member, and a portion provided on the gear lock piece to eliminate the engagement in a condition where the rack member has completely attained its full stroke.

Abstract: In a magnetic tape recording/playing device, a reciprocating member control mechanism, in which reciprocating members employed in the channel change mechanism, FF (fast forward)/REW (rewind) mechanism and the like are interlocked with a cam which is driven by a rotary member driven by a tape drive motor, and provided between this rotary member and cam is an idler which is engaged with an electromagnetic plunger which is so arranged as to selectively transmit or shut off the rotation from the rotary member to the cam.

Abstract: In a magnetic tape recording/playing device, a reel base driving mechanism wherein a pulley driven by an electric motor and a reel drive block are fitted rotatably independently of each other to a shaft of each of forward- and reverse-side reel bases, while an idler is movably provided between said reel bases, which idler having an input section or idler which engages said pulleys and an output section or idler which engages said reel drive blocks, said idler being made to engage the forward- or reverse-side reel base, thus transmitting the rotation of the pulley on that reel base to the reel drive block also on this reel base.

Abstract: In an apparatus in which there is provided a driving pulley around a rotatable shaft which constructs a driven member in a manner freely rotatable with an external force so that the rotational force of the driving pulley is transmitted to the driven member due to the friction, a friction transmitting apparatus characterized in that there are further provided a magnetized member mounted on the driving pulley and a magnet mounted around the driven rotatable shaft so that the magnet attracts the magnetized member to thereby transmit the rotational force of the driving pulley to the driven member.

Abstract: A clutch system in a tape player comprises a first rotor rotated by a motor and a second rotor capable of engaging with and disengaging from said first rotor, both rotors being formed with engage portions at their end faces which are adjacent to each other. The clutch system is further provided with a switching means for carrying out engagement and disengagement of said rotors, and the switching means is operated by an operating means for making said motor carry out automatic loading operation.

Abstract: A power loading/unloading mechanism for tape record/playback apparatus which comprises a gear driven by a motor, a rack member associated with a tape pack inserted; a partly cut-out gear independent of the rack member operation system and interlocked with a cam member for advancing and retreating a head plate; an engaging gear driven by the motor and disposed so as to engage with the partly cut-out gear; a means for keeping the engaging gear from engagement with teeth of the partly cut-out gear; and an engagement operating means for detecting completion of tape pack loading and for putting the engaging gear into mesh with the teeth of the partly cut-out gear.

Abstract: In a disc record reproducing apparatus for reproducing a disc on which a PCM (pulse code modulation) signal in the form of an RLLC (run length limited code) is recorded, a reproduced PCM signal therefrom is frequency-divided at a constant frequency dividing ratio, a frequency-divided PCM signal is compared with a reference frequency signal, and then the rotation of the disc record is controlled by a compared output.

Abstract: In a recording and/or reproducing apparatus having a rotated record carrier, for example, in the form of a disc, adapted to have video or other signals optically recorded in successive turns of a spiral track on a surface of the record disc, a recording and/or reproducing transducer or head assembly with an optical system including a movable lens for focusing a light beam at the disc surface and/or a movable mirror for deflecting the light beam so as to cause the latter to scan the track, and a servo system for detecting deviations from the proper focused and/or scanned conditions, for example, due to fluctuations of the rotated record disc in directions normal to, or in the plane of rotation thereof, and for correspondingly displacing the lens and/or mirror, respectively, so as to maintain the proper focused and scanned conditions; such servo system is provided with a gain-frequency characteristic having peaks at a fundamental frequency corresponding to the rotational speed of the record disc and at least at

Abstract: A cassette tape recording/reproducing apparatus which is so adapted that after a cassette is horizontally pushed deep into a pack guide, the pack guide is lowered in a vertical direction to set the cassette in a recording/reproducing position on a bottom plate of the apparatus, which apparatus is characterized in:that an ejecting plate and a slide plate are provided along the pack guide so as to slide in the forward and the backward direction of the apparatus, and a lock plate is provided for locking the ejecting plate and the slide plate in their retired positions, respectively, said lock plate being adapted to lock, at a time, either one of the ejecting plate and the slide plate, preventing the same from moving and allow the other to move forwardly or backwardly;that a power plate is provided also along the pack guide, which plate is movable in the forward and the backward direction of the apparatus, provided with a set spring for normally urging the power plate in the retreating direction, and engageable w

Abstract: A magnetic tape-record/playback apparatus having a mechanism for fast forward/rewind operation, which is formed of an ejecting lever and plate which are provided separately from each other but slidably connected with each other, a spring provided between said ejecting lever and a frame of the apparatus to urge said lever to its original position, a rotatable disc provided in association with said ejecting lever to effect a switching operation in relation with the fast forward/rewind operation and provided with a pin engageable with a slot formed on said ejecting lever, said slot having an enlarged portion with convergent edges for resetting said rotatable disc to its position for ejection, and an engaging member provided in relation with said rotatable member and adapted to be engaged with a stepped portion of said rotatable member to keep a head assembly of the apparatus in the fast forward/rewind mode.

Abstract: A tape player having two belts wound around a motor shaft, with one further wound around flywheels provided with capstans and another further wound around a reel shaft drive system, said flywheels and said reel shaft drive system being adapted to be separately rotated by the different belts, respectively.BACKGROUND OF THE INVENTIONThis invention relates to a tape player art and more particularly to a tape player which can enjoy minimized wow and flutter as well as reduced thickness in construction.The reduction in thickness of a tape player will not only contribute to reduction of materials to be used for manufacturing of the tape player but also enable the tape player to be suitably installed with advantage in a limited space for a driver's seat in a car. In conventional mobile tape players, it is general that wow and flutter is caused principally by a load fluctuation in the tape drive system.

Abstract: Information which is recorded on a record medium is read therefrom by a main beam of radiant energy, such as a main light beam, which impinges and scans the record medium so as to be modulated with the recorded information. An additional beam of radiant energy also impinges upon the record medium, and both the main and additional beams pass through a common objective lens which focusses the beams. The main beam, after impinging upon the record medium and being modulated with the recorded information, is detected. The transmission path of the main beam, and particularly its impinging location on the record medium, is controlled in accordance with the detection thereof. Also, the additional beam is detected after it impinges upon the record medium. The effective focussing position of the objective lens is adjusted in accordance with the detected additional beam.