Abstract: A mechanism is described for protecting a server against invalid usage of proxy objects after malfunction of a server and also for transparently re-creating proxy objects in a client of a client-server distributed processing system. A proxy class is used that has additional attributes indicating the name of the target object in the server, an indication as to whether the name is presently valid and an alternate pointer to the target object. A proxy register object in the client maintains pointers to all the proxy objects which point to objects in the server. On malfunction of the server, and consequent invalidity of the proxy objects, the proxy register object causes all proxy objects to be refreshed.

Abstract: A loading unit for a disc cartridge includes a cartridge holder movably supported relative to a chassis. The cartridge holder is moved towards a recording and/or reproducing device for recording and/or reproducing information signals on or from a recording medium housed within the disc cartridge. The cartridge holder is configured to hold the disc cartridge inserted therein and has an engaging recess and an insertion detector. The insertion detector is moved in response to the disc cartridge being inserted into the cartridge holder. A stop mounted on the cartridge holder has a retention portion for retention by the chassis and an engaging protrusion for engagement with the engaging recess of the disc cartridge. The stop is slidingly contacted with the chassis in conjunction with movement of the cartridge holder towards the recording and/or reproducing device.

Abstract: A tape guide angle controlling apparatus for a magnetic tape recorder-player includes a main base, a shaft bushing provided in the main base and having a shaft hole in the center thereof, a tape guide arm having at one end portion thereof a rotation shaft rotatably inserted into the shaft hole and at the other end portion thereof having a tape guide, a tape guide horizontal-rotating member for horizontally rotating the tape guide arm, and a tape guide vertical-operating member driven by the tape guide horizontal-rotating member for vertically operating the tape guide arm. The apparatus is characterized in slanting to a certain degree the tape guide which guides a magnetic tape in a reverse running mode, thereby improving the magnetic tape running property in reverse running mode.

Abstract: A disc device including a floating base supported by a chassis through a plurality of elastic members, a holder which is supported on the floating base so as to be able to move vertically with respect to the floating base, and into which a disc cartridge is inserted, a slider, slidably disposed so as to move in directions of inserting and discharging a disc cartridge into and out of the disc device, for holding and carrying a disc cartridge inserted thereinto, and a switch lever, pivotably supported on the holder, for detecting that a disc cartridge is inserted correctly. A holder is rotatably engaged with the holder arm and accepts a disc cartridge inserted thereto, wherein when replaying the disc cartridge held in the holder, the disc cartridge is loaded onto the floating base by rotating the holder with respect to the holder arm and rotating the holder arm with respect to the floating base.

Abstract: A disc cartridge of high reliability for protecting an optical disc from a shock generated such as during transport. On the facing inner surfaces of an upper cartridge half 5 and a lower cartridge half 6 is formed an arcuate disc housing wall section 8 in association with the outer periphery of an optical disc 2 for constituting a disc housing section 9. The disc housing wall section 8 is interrupted at four positions 28 on each of which a boss 28 is set upright. A stationary guide having a substantially columnar guide portion and a flange protruded outwardly from upper and lower sides of the guide portion is fitted on the boss to complete a disc guide member. Four such disc guide members 20a, 20b, 20c and 20d are provided for supporting the disc cartridge 1.

Abstract: A disk reproducing apparatus capable of loading a compatible cartridge and MO cartridge designed to different specifications comprised a cartridge holder unit having a first shutter opener for opening and closing a shutter on the first cartridge and a second shutter opener for opening and closing a shutter on the second cartridge, the second shutter opener being moved outside or inside the cartridge insertion path depending on the cartridge inserted, and a disk motor base unit having first and second reference posts for adjusting the respective disk mounting distances of the first and second cartridges

Abstract: A player apparatus for compact discs (CD discs) and similar signal carriers, has a playing station designed to hold and rotate CD discs and a pick-up device for detecting signals from the discs and is of the type which has a magazine for two or more discs and a device for selectively bringing any of these discs into and out of operative engagement with the playing station. The player is also provided with a number of stationary disc holder stations arranged in a linear formation on a chassis so as to be operable to hold a linear row of discs side by side in a common plane, while at least the pick-up device of the playing station is provided on a sledge that can be displaced along the chassis so as to be selectively operatively engageable with the individual discs in the row of discs. The entire row of discs is visually exposed except for any station covered by the playing station.

Abstract: A tray loading arm is provided for reciprocating between a magazine and a reproducing device. A pin is provided on the tray loading arm, and a tray guide device is operatively engaged with the pin so as to be moved together with the pin. The tray guide device has a guide plate to be engaged with the tray for moving the tray, and a slide plate to be engaged with the tray for keeping engagement of the guide plate with the tray during movement of the tray.

Abstract: A magnetic recording and reproducing apparatus with a positioning mechanism for a tape guide drum is provided. The positioning mechanism includes first and second actuators which changes the position of the tape guide drum relative to a direction of travel of a magnetic tape during reproduction for orienting rotary magnetic heads to follow tracks formed on the magnetic tape perfectly if the tracks are curved undesirably. The first actuator is designed to turn the tape guide drum to orient a portion of a rotation plane of the rotary magnetic heads at a tape-entering position where the magnetic tape enters the tape guide drum in a first direction and a portion of the rotation plane at a tape-leaving position where the magnetic tape leaves the tape guide drum in a second direction opposite the first direction. The second actuator is designed to turn the rotation plane of the rotary magnetic head at the tape-entering position and the tape-leaving position in the same direction.

Abstract: A technique for preventing damage to ball bearings in small form factor devices where the drive motor has at least one piezoelectric crash stop ring disposed about the shaft and inside the rotor of the motor. The crash stop ring must be dimensioned to permit only a small amount of movement of the rotor relative to the shaft. The permitted movement is less than the minimum movement which would cause damage to the elements of the ball bearing.

Abstract: A network system temporarily stores all data base access commands transmitted from a test server in a command storage section, is in the stand-by state until a data base access command execution time written in one of the data base access commands comes, and reads out the data base access command from the command storage section, when the data base access command execution time has come, for accessing data base servers 1a to 1n, and also the network system temporarily stores all performance evaluation data for the data base servers 1a to 1n in a performance evaluation data storage section, reads out performance evaluation data from the performance evaluation data storage section when it is determined that execution of all data base access commands has been finished, and transmits the read-out data to the test server.

Abstract: A turntable is a table mounted to a shaft (4) of a spindle motor and the turntable supports a laminated disc thereon and drives the disc in rotation. The laminated disc includes a lower disc and an upper disc stacked on the lower disc, and is supported on a disc-supporting surface. When the disc is loaded on the turntable, a fitting member fits into the center hole of the laminated disc for centering the laminated disc with respect to the shaft. The fitting member fits the center hole of the lower disc when the laminated disc is supported on the disc-supporting surface. The turntable may include a tapered member which guides the laminated disc to the disc-supporting surface. The laminated disc includes lower and upper discs each having an edge which defines the center hole. The corners of the edges are cut away along a circumference of the center hole. The upper and lower discs are placed together so that the cut-away corner directly face each other.

Abstract: The invention relates to a magazine having a plurality of disk drawers which are mounted in disk-holding compartments and each of which holds a single disk (CD), all of the disk drawers being lockable in and releasable from the magazine by means of a single, common disk drawer locking mechanism and the magazine being capable of insertion into a machine. In order to create a magazine of straightforward, compact and economical design having as few components and being as simple to assemble as possible, the disk drawer locking mechanism is integral with the magazine. The disk drawer locking mechanism and the magazine are constructed as a one-piece injection molded unit in plastic and the disk drawer locking mechanism has a locking catch and a release tab which are joined to the magazine or an outer panel of the magazine by means of a common, elastic fulcrum bar and which pivot conjointly around the centre axis of the fulcrum bar thereby acting against its spring action.

Abstract: The reconfiguration of a magnetic write head minimizes cracking at the ABS. This is accomplished by selectively reconfiguring the front edge of the insulation layer that defines the zero throat height (ZTH) so as to increase the volume of the overcoat layer which interfaces with the reconfigured edge. The front edge of the ZTH-defining insulation layer has a central portion which is centered with respect to the second pole tip and first and second lateral portions which are on each side of the front portion and parallel to the ABS. The front edge portion is recessed from the ABS a distance appropriate for defining the ZTH between the first and second pole pieces of the write head. The first and second lateral edges are further recessed into the head so as to increase the volume of the overcoat layer between the ABS and the first and second lateral edges.

Abstract: A disk driving device including a hub which rotatably supports a disk with the aid of bearings, a yoke which is fixedly secured to the hub so as to be turned together with the hub, a drive magnet unit which is fixedly mounted on the inner cylindrical surface of a cylindrical portion of the yoke, and a stator core confronted with the drive magnet unit. In the device, the yoke includes a bent portion and the hub includes a flange which protrudes below and outwardly from a disk mounting portion of the hub and which has an upper surface having an inner diameter substantially equal to an inner diameter of the bent portion of the yoke. The flange is located below a disk mounting portion, and the flange is fixedly held between the inner surface of the bent portion of the yoke and the upper end face of the drive magnet unit.

Abstract: It is an object of the invention to present a recording and reproducing apparatus capable of mounting a bare disk and a cartridge selectively on a tray, without dropping from the tray in vertical position.

Abstract: An improved acoustic isolation apparatus for reducing the total acoustic noise of a disc drive assembly and the like, comprising at least one acoustic compliance area disposed between an excitation source and a support member to impede coupling of vibrations from the excitation source to the support member to prevent the vibrations from inducing harmonic vibrations in the support member, thus reducing the total acoustic noise.

Abstract: A CD-ROM disk player has a guide member and a pair of rollers for shifting a CD-ROM disk into or out of a disk slot of the player. The guide member has a pair of guide portions and a bridge portion connecting the guide portions to define the operating position for the disk. One of the guide portions has a curved protrusion for stopping the disk in the direction of shift of the disk for preventing the disk from falling. The CD-ROM player can be operated in upright or laid down posture.

Abstract: A load beam attached to an actuator arm of a magnetic head suspension assembly includes a base section, a midsection and an arm section. An air bearing slider is disposed at the distal end of the arm section. The midsection joins to the base section at a junction boundary which is wider than any of the other sections, and is also positioned at a distance away from the actuator arm. The load beam bends at the midsection starting at the junction boundary. The bending of the load beam allows the slider to fly proximally close to a disk surface during normal operation. The base section, secured to an actuator arm, is integrally formed with ribs. The base section provides a firm platform for the bending of the load beam and effectively shortens the effective length of the load beam, which affords higher vibrational resonant frequency. The suspension assembly also can sustain high shock separation impact.

Abstract: A rotary type actuator for a magnetic disk device includes a magnetic head that traverses tracks of the magnetic disk as the actuator rotates about a rotary shaft. The rotary type actuator has at least one arm for the magnetic head at its front end. A first flat cable has one end connected to the rotary type actuator, for making an electrical connection to the electronics in the disk device. A second flat cable is provided on the side surface of the arm, for electrically connecting the magnetic head to the first flat cable. The first flat cable includes a plurality of lands arranged along an extended direction of the arm. The second flat cable includes a first land group provided at one end of the second flat cable for electrically connecting to the magnetic head. The first land group has a plurality of lands arranged along an extended direction of the arm. A second land group is provided at the other end of the second flat cable for electrically connecting to the first flat cable.