42 results about "Optical data disk" patented technology

The invention provides an intelligent optical storage device, including a hard disk, an optical disc cartridge, an optical drive, a processor, and a manipulator; Put the CD into the CD-ROM drive, burn the data read into the hard disk to the CD-ROM through the CD-ROM drive, or copy the data from the CD-ROM to the hard disk through the CD-ROM drive, and finally take the CD-ROM out of the CD-ROM drive and put it back into the CD-ROM box through the manipulator; The hard disk, the CD box, and the CD-ROM drive are arranged sequentially from top to bottom, and the manipulator is arranged on one side of the opening of the CD-ROM box. The intelligent optical storage device provided by the present invention reads the data input from the outside into the hard disk, and then stores the data in the hard disk in the optical disk copied by the optical drive, or transfers the required data to the hard disk through the optical drive through the optical disk, and then The data is read out through the hard disk, and the device stores data quickly and safely, and does not consume power, energy, energy, and environmental protection.

An object of the present invention is to provide a marking forming apparatus, a method of forming a laser marking on an optical disk, a reproduction apparatus, an optical disk, and a method of manufacturing an optical disk, capable of providing a greatly improved copy prevention capability as compared to prior known construction. To achieve this object, in the optical disk of the invention, for example, a marking is formed by a laser on a reflective film of a disk holding data written thereon and at least position information of the marking or information concerning the position information is written on the disk in an encrypted form or with a digital signature appended thereto.

The invention discloses a method for taking back an optical disk through a disk grabbing device with double layers of insertion pieces in an optical disk library. According to the method, position sorting is carried out on optical disks in an optical disk box, the relationship between the position serial numbers of the optical disks in the optical disk box and the serial numbers of target trays where the optical disks are located is built, the position serial number of one optical disk is obtained automatically through matching according to the serial number of the corresponding target tray, the number of optical disks which need to be moved for placing the optical disk back to the original physical position is obtained through calculation, and thus the optical disk is placed back to the original position. According to the method, the stacking sequence of the optical disks in the optical disk box is not changed, database information does not need to be updated after disk replacement operation is carried out, the stability of a database is improved, the operation load of a controller is reduced, and an optical disk library management system is optimized.

The invention relates to the field of optical disk storage and provides an optical disk exchange and data storage separated optical disk jukebox system. The optical disk exchange and data storage separated optical disk jukebox system comprises a rear-end large-capacity optical disk jukebox and a front-end input-output optical disk jukebox which are connected with each other through a network bus. The rear-end large-capacity optical disk jukebox comprises a plurality of optical disk cabinets and rear-end controllers for controlling the optical disk cabinets. The optical disk cabinets are each composed of a plurality of optical disk boxes, and a plurality of optical disks are arranged in each optical disk box. The front-end input-output optical disk jukebox comprises a plurality of parallel CD drivers and front-end controllers for controlling the CD drivers. The optical disks in the CD drivers of the front-end input-output optical disk jukebox are in full-connection mapping relationship with the optical disks in the rear-end large-capacity optical disk jukebox. By means of the optical disk exchange and data storage separated optical disk jukebox system, data in the front-end input-out optical disk jukebox and data in the rear-end large-capacity optical disk jukebox are managed in a united mode, and the phenomenon that manual optical disk inserting and taking-out is low in efficiency and prone to error when data are directly read and written from the rear-end large-capacity optical disk jukebox in a data reading and writing process is avoided. Thus, efficient and intelligent management to a large optical disk jukebox is achieved.

The present techniques present methods and systems for increasing a data reading rate on optical data disks using a single reading head. The methods take advantage of the difference between a mean focal distance (MFD), or minimum spacing that the detector can distinguish between bits, and the minimum separation of bits in a single track to increase the reading speed. As the bits may be more closely spaced across adjacent tracks or layers, these techniques may be used to increase the reading speed of the disk. Specifically, the data symbols that make up a single bit-stream may be stored in a pattern horizontally across adjacent tracks, or vertically across adjacent layers. Accordingly, the focal point of the detector is scanned across the disk in the same pattern to read the individual data symbols.

An optical disk that enables a laser beam to be focused on an object track without making mistakes, an optical disk device, a format processing method, and a recording method. The optical disk shall be configured to has a guiding layer with a physical groove structure containing address information and a single or multiple recording layers with no groove structure, in which the guide areas for recording the address information thereon are formed along a track of the guide layer at fixed intervals in a user data area of each recording layer. An address for the recording layer is generated based on information obtained from the guide layer, and the address for the recording layer is recorded in the guide area.

The present techniques provide methods and systems reading a data bit of interest on an optical data disc with a reduced error rate. The data bit estimation may be improved by reducing deterministic noise resulting from an optical reader system and/or the optical data disc. The reader may adjust the position of a detector to detect light scattered from the disc based on parameters of known noise sources. In one embodiment, the detector may be moved vertically in relation to the data bit of interest on the optical disc. In another embodiment, more than one detector may be used to detect light scattered from a data bit of interest. In embodiments, the positioning of the detector(s) may be based on system or disc parameters, and the detected scatterings may provide a data reading, improved for an optical return from a present micro-hologram.