Pioneer Electronic Corporation

Pioneer Electric Corporation

Takahiro Okajima

Yuji Ikedo

Tsutomu Miyakawa

Masahiko Miyake

Isami Kenmotsu

Hideyuki Takahashi

Yoshio Takahashi

Yasuyuki Tashiro

Ken Okamura

Yasuyuki Tashino

Tsuneo Shimura

A CD player has a magazine containing a plurality of trays, and a single tray. The magazine is provided to be loaded by hand, and the single tray is slidably mounted in the casing between a playback position and an ejected position. A lock device is provided for locking the magazine at a loading position. A disc cam is provided for operating the lock device and the single tray. A pin is mounted on the disc cam and operatively connected to the single tray so as to move the single tray between the playback position and the ejected position in rotating range of the cam. The cam is provided to be operatively connected to the lock device. The cam is arranged to operate the lock device so as to release the magazine when the cam is rotated in a range outside the rotating range.

Loading and ejecting device for a disk player

A magazine disk player for accommodating either a plurality of disks or a single disk. The disk player includes a magazine loading section for holding a magazine, disk conveyor for supplying a disk from the magazine to the turn table, and returning the disk thereinto, a magazine loading detecting device for detecting the loading of the magazine, an operating member which is movable between a first position and a second position, and which, when the magazine is loaded into the magazine loading section, is moved from the first position to the second position being engaged with the magazine, a locking member provided near the magazine loading section in such a manner that the locking member is movable between a locking position and a non-locking position, and which is engaged with the magazine to lock the latter to the magazine loading section being urged towards the locking position wherein the magazine loading detector detects the position of the locking member. In the player, the operating member is maintained engaged with the locking member to inhibit the movement of the locking member while being moved from the first position to the second position, and the inhibition of the movement of the locking member is eliminated when the operating member reaches the second position.

Magazine disk player having an improved magazine detecting feature

A multi-disk player system including a housing, a playing mechanism provided within the housing, a magazine that is capable of accommodating a plurality of disks in an orderly manner and which is provided detachably with respect to the housing, a magazine loading detector for detecting the loading of said magazine within the housing, and a disk pickup and transport device that selects a desired disk from the magazine and transports the same to the play position. The magazine loading detector is comprised of a pair of push levers that are positioned in the deepest magazine loading area and are in engagement with the magazine, a pair of sensor switches capable of engaging with the push levers. The push levers are spaced apart from each other by the distance corresponding to the thick portion of the magazine. The system may include a disk container comprising a plurality of trays on which disks are to be placed, and the magazine for accommodating the trays. The magazine is provided with partitions that limit the vertical position of the trays. The height of the underside of each partition is set at a value equal to that of the top of the disk placed on the tray below each partition.

Multi-disk player system incorporating disk search and disk selection

A multi-disk player system comprising a housing, a playing mechanism provided within the housing, a magazine that is capable of accommodating a plurality of disks in an orderly manner and which is provided detachably with respect to the housing, a magazine loading detector for detecting the loading of said magazine within the housing, and a disk pickup and transport device that selects a desired disk from the magazine and transports the same to the play position. The magazine loading detector is comprised of a pair of push levers that are positioned in the deepest magazine loading area and are in engagement with the magazine, a pair of sensor switches capable of engaging with the push levers. The push levers are spaced apart from each other by the distance corresponding to the thick portion of the magazine. The system may include a disk container comprising a plurality of trays on which disks are to be placed, and the magazine for accommodating the trays. The magazine is provided with partitions that limit the vertical position of the trays. The height of the underside of each partition is set at a value equal to that of the top of the disk placed on the tray below each partition.

Multi-disk player system

A carriage movable on a pair of parallel guide members radially towards and away from a disk carrying surface of a turntable of a disk player, is constituted by first and second carrying members rotatably mounted to each other with the rotation axis of the second carrying member positioned perpendicular to the longitudinal direction of the guiding members and parallel to a guide plane containing the pair of guiding members so as to pass through a point where the second carrying member is in contact with the other guiding member. The carriage is provided with a differential screw screwed to the first and second carrying members to adjust the relative angular positioning between them. The carriage supporting an optical pickup is driven by a half nut provided on the carriage and a worm screwed to the half nut with the half nut movable within a plane containing the respective axes of the guiding members and the worm, relative to the carriage.

Information reader for disk player

A multidisk player comprising a housing, a playback mechanism, a magazine capable of containing a plurality of disks arranged in order, the magazine being detachably fitted in a predetermined magazine loader within the housing, a single adapter detachably fitted in the loader, the single adapter being capable of being loaded replaceably with one disk, disk carrier means for carrying the magazine and the disk in the single adapter to a playback position, and a drive unit for driving the magazine and the single adapter outwardly from the loader, the single adapter comprising a first member directly fitted in the loader, a second member for being loaded with the disk, the second member being movable within a fixed range relative to the first member and along the direction where said first member is fitted in the loader, and a drive unit for driving the second member. The first member is driven out of said loader when the second member is moved relative to the first member such that the sum of the quantity of the protrusion of the first member from the loader and that of the movement of the second member relative to the first member is slightly greater than the outer diameter of the disk.

Disk player

A disk player comprising a turntable and a clamp mechanism for clamping a disk put on the turntable, the clamp mechanism pushing the disk in cooperation with the turntable and moving its parts toward and away from the turntable, the moving mechanism comprising a pair of support members, the pair of support member being swingable in planes nearly perpendicular to the disk bearing side of the turntable and free ends of the pair of support members being capable of contacting with the disk pushing side and the opposite side of the pushing mechanism, respectively, to pinch the pushing mechanism therebetween, and a driver for driving the pair of support members.

Disk mechanism in a disk player

A disk player for double-side disks, such as video disks, having a reduced overall size and simplified structure. The pickup, spindle, spindle motor, and disk clamper of the player are mounted on a rotary frame. To change from playing one side of the disk to the other, the disk is conveyed out of the player, the rotary frame is rotated through 180 degrees, and the disk conveyed back into the player. The disk is then again clamped against the spindle and played.

Double-sided disk player

A multi-disk player system comprising a housing, a playing mechanism provided within the housing, a magazine that is capable of accommodating a plurality of disks in an orderly manner and which is provided detachably with respect to the housing, a magazine loading detector for detecting the loading of said magazine within the housing, and a disk pickup and transport device that selects a desired disk from the magazine and transports the same to the play position. The magazine loading detector is comprised of a pair of push levers that are positioned in the deepest magazine loading area and are in engagement with the magazine, a pair of sensor switches capable of engaging with the push levers. The push levers are spaced apart from each other by the distance corresponding to the thick portion of the magazine. The system may include a disk container comprising a plurality of trays on which disks are to be placed, and the magazine for accommodating the trays. The magazine is provided with partitions that limit the vertical position of the trays. The heights of the underside of each partition is set at a value equal to that of the top of the disk placed on the tray below each partition.

Disclosed is a disk holder adapted to be inserted and fitted into a loading means of a disk player. The disk holder supplys a disk to the disk player in response to the operation of the player. The disk holder includes a housing for holding a plurality of disks, a plurality of plate-shape trays each loading each of the disks on each principal face thereof. Each of the trays is provided ejectable from the retractable in the housing along the principal face. The disk holder further includes flexible members positioned confronting with each of the disk loading face and projecting from the principal face of neighboring tray.

An optical pickup system in which a tracking objective lens is moved by opposed magnetic coils attached to the lens along the axis of the lens and in the transverse direction across the recording tracks. A servo system on a fixed base supplies current to the movable coils by lead wires which are connected at the middle to a fixed vibration absorbing material, such as polyurethane foam.

Pickup system in optical information recording and reproducing apparatus

A disk player in which a clamping member clamps a disk against a turntable. The clamping member has two annular bosses and the turntable has one annular boss located between those of the clamping member. A projection of the clamping member has a projection that fits within a slightly larger recess in the turntable. A ball bearing in the projection moves towards the turntable and forces radially outwardly three ball bearings which then contact the side walls of the recess.

Disk player having a clamper aligned with a turntable

An auto loading disc player including a housing having a slot to receive a disc therein, a player mechanism disposed in the housing, and a disc carrier mechanism for conveying the disc close to a playing position. A pair of guides is disposed bilaterally of a carrier path for the disc for guiding the disc along the carrier path. A disc diameter discriminator mechanism engages with the periphery of the disc to discriminate between diameters of discs at the same time that the guide means guides the disc. The disc diameter discriminator mechanism includes a structure for driving the guides in such a manner that the distance between said guides corresponds to the outer diameter of the disc. The guides engage with the periphery of the disc during its conveyance to thus cause the disc to cooperate with the disc carrier mechanism for guiding the disc. The disc carrier mechanism releases the disc from engagement with the guides during the period of time when the disc is being played.

Growing community of inventors

Saitama, Japan

Takahiro Okajima