Abstract: A positioning structure, which fixes an operating unit (1) by a fixing bracket (4) and an adjusting bracket (2) provided with stoppers (3), easily performs the positioning that prevents the positions of the stoppers (3) from being displaced due to a customer's pressing force acted to the operating unit (1). Inclined rectangular holes (6) are formed at the adjusting bracket (2), and the adjusting bracket is fixable after fastening positions of fixing screws (5) are adjusted along the rectangular holes (6). Alternatively, step shaped rectangular holes (16) are formed, and the adjusting bracket is fixable after fastening positions of the fixing screws 5 are adjusted along the rectangular holes (16).

Abstract: The invention discloses radio frequency zero crossing signal generators for optical disc drives, comprising a controllable low pass filter, a comparator, and a control circuit. The controllable low pass filter evaluates an average level of the magnitude of a radio frequency ripple from an optical disc drive. The comparator compares the radio frequency ripple to the average level evaluated by the controllable low pass filter to generate a radio frequency zero crossing signal. When the optical disc drive reads a fingerprint defect on an optical disc, the control circuit adjusts a cut-off frequency of the controllable low pass filter to adjust the speed at which the controllable low pass filter evaluates the average level.

Abstract: Embodiments of the present invention provide systems and methods for handling commands requesting movement of a data storage medium (magnetic tape, optical disk, or other medium) from a source media library to a destination media library using a pass through port. Prior to issuing commands requesting movement of the data storage medium from a source location to the pass through port and from the pass through port to a destination location, embodiments of the present invention can check the status of various locations (e.g., the destination location or pass through port) to determine if the movement requested in the original command can be completed successfully. Another embodiment of the present invention can maintain reservation flags for pass through ports so that the status of particular pass through ports can be determined and an available pass through port selected.

Abstract: A disc changer comprises a housing, a disc box, a selecting mechanism, an elevating mechanism, and a driving device. The housing has at least one oblique slot in each side wall. Projections of the oblique slots are interlaced to each other. The disc box fabricated in the housing has a plurality of trays stacking vertically. The selecting mechanism is used for moving vertically to a horizontal position of a predetermined tray of the disc box for pulling out the predetermined tray from the disc box. The elevating mechanism is fabricated in the housing and comprises two slides and a transmission shaft. Each slide is attached to the oblique slot with at least a slide protrusion. Each slide slides back and forth along the respective side wall. The slide protrusion of each slide slides back and forth along the attached oblique slot. By this way, the selecting device can move up and down inside the housing to reach the predetermined tray of the disc box.

Abstract: An optical disk loading apparatus (1) for unloading a case (10) from a case stacking device (3) where a plurality of cases (10) are stacked with each case (10) closed and placed upstandingly, transferring the case (10) via a conveyor (2) and loading optical disks (D1, D2) into the case (10). The optical disk loading apparatus (1) includes a case unloading and inverting device (4) that unloads a case (10) from a case supplying conveyor (30) of the case stacking device (3) and inverts the case (10) 90 degrees upstandingly, a case opening device (5) that opens the inverted case (10) to a flat state at its inverted position, and optical disk loading devices (6, 6?) that load optical disks (D1, D2) into the opened case (10). Since the case opening device (5) can be placed at a position in the vicinity of an upstream end of the conveyor (2), the whole length of the conveyor (2) is shortened, thereby shortening the whole length (L) of the optical disk loading apparatus (1).

Abstract: A process/method for controlling a digital data storage unit including a multiplicity of storage media slots for receiving media storage units, a plurality of media storage units loaded in some of the storage media slots, a plurality of data storage drives each having a unique drive address, a loader mechanism for selectively moving a media storage unit between a storage media slot and one of the plurality of data storage drives, and a storage unit controller connected to at least one host computer. One or more of the data storage drives are reserved as spare data storage drives wherein the spare data storage drives are masked from the host computer such the spare data storage drives are not directly accessible by the host computer. The storage unit controller receives and decodes host commands including a source address corresponding to a storage media slot location, and a destination address corresponding to a data storage drive specified by the host computer.