Method and system for controlling exclusive access to shared resources in computers
What is claimed is: 1. An exclusive control method for a computer system for controlling an obtaining process, which obtains an exclusive control module indicating an exclusive use right of a correspo... Read More
Inventors: Kido, Kazutaka;, Assignee: Sanyo Electric Co., Ltd. (Osaka, JP) |
Disk file apparatus
Accordingly, it is a primary object of the present invention to provide a disk file apparatus wherein the cartridge loading or the cartridge extraction may be performed at any time. To this end, the p... Read More
Inventors: Teranishi, Shunichi;, Assignee: Aisin Seiki Kabushiki Kaisha (Aichi Pref., JP) |
Automatic exchanging system for storage and retrieval of magnetic tape cassettes
The present invention has been developed in order to remove the drawbacks inherent to the conventional automatic cassette exchanging systems. It is therefore an object of the present invention to prov... Read More
Inventors: Yamashita, Kazuichi; Yokota, Teruhisa; Notani, Masaaki; Katsuta, Tsutomu;, Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP) |
Tape changer for loading and unloading a magazine of magnetic tape cartridges
The present invention has an object to overcome the above-mentioned drawbacks of the conventional techniques by providing a cartridge changer in which a certain cartridge selected from multiple cartri... Read More
Inventors: Ishikawa, Masatoshi; Fujita, Kozo; Kobata, Shigeyuki;, Assignee: Hitachi, Ltd. (Tokyo, JP) |
Cartridge loader for loading each of a plurality of cartridges into a cartridge insertion slot
The present invention comprises a loader for a drive having a cartridge acceptor, including a housing defining an opening, a holder, an assembly for aligning the holder, and a pusher supported by the ... Read More
Inventors: Campbell, Kenneth C.; Gray, Roger M.; Kockler, Barry C.;, Assignee: Archive Corporation (Costa Mesa, CA) |
Single tape cartridge access port
The present invention provides an access port for loading and retrieval of single tape cartridges into an automated tape cartridge library system, such as the library system disclosed in U.S. Pat. No... Read More
Inventors: Apple, James L.; Campbell, Ronald L.;, Assignee: Storage Technology Corporation (Louisville, CO) |
Five and one-quarter inch form factor combination DAT tape drive and cassette magazine loader
It is therefore the primary object of the present invention to provide a combination DAT tape drive and cassette magazine loader which will fit within the full height five and one-quarter inch form fa... Read More
Inventors: Theobald, Jr., William I.; Campbell, Kenneth C.; Gray, Roger M.; Hedlund, Lyle J.; Heistand, II, Raymond D.; Kockler, Barry C.; Noonan, Thomas; Shannon, Warren K.; Nakagawa, Haruhi; Ochi, Bunroku;, Assignee: Conner Peripherals, Inc. (San Jose, CA) |
Optical disk playback and recording device which alternately allocates logical addresses on different sides of disk
Accordingly, it is an object of the present invention to provide an optical disk playback and recording device having an increased on-line capacity. It is a further object of the present invention to ... Read More
Inventors: Sanada, Satoru;, Assignee: Nikon Corporation (Tokyo, JP) |
Composite drive controller including composite disk driver for supporting composite drive accesses and a pass-through driver for supporting accesses to stand-alone SCSI peripherals
The problems outlined above are in large part solved by a drive array controller with a SCSI pass-through mechanism according to the present invention. The drive array controller provides an interface... Read More
Inventors: Jones, Craig S.; Davis, Alan;, Assignee: Dell USA, L.P. (Austin, TX) |
Method and system for converting computer peripheral equipment to SCSI-compliant devices
The present invention is directed to a conversion apparatus attachable to a peripheral device which operates on an ATA/ATAPI communication protocol, to allow the computer peripheral device to communic... Read More
Inventors: Born, Richard M.;, Assignee: LSI Logic Corporation (Milpitas, CA) |
Image acquisition architecture
The present invention addresses the foregoing by providing an image acquisition architecture including a device class representing a physical image acquisition device, a storage class representing sto... Read More
Inventors: Heiden, Don;, Assignee: Canon Kabushiki Kaisha (Tokyo, JP) |
Inter-system transport mechanism for use with robotic data cartridge handling systems
The present invention is directed to a mechanism for transporting data cartridges between two or more robotic storage assemblies in a robotic data cartridge handling system. Each robotic storage assem... Read More
Inventors: Nicol, David H.; Rouillard, Mark J.;, Assignee: Odetics, Inc. (Anaheim, CA) |
Optical information recording medium which uses diffraction grating
We claim: 1. An optical information recording medium characterized in that at least one cell comprising diffraction gratings is disposed on a planar substrate, and said cell is divided along two dimen... Read More
Inventors: Toda, Toshiki; Takahashi, Susumu; Iwata, Fujio;, Assignee: Toppan Printing Co., Ltd. (Tokyo, JP) |
Control apparatus for controlling data flow between a control processing unit and peripheral devices
What I claim is: 1. In a data processing system, a peripheral control apparatus for controlling the flow of data between a control processing unit and a plurality of peripheral devices, said periphera... Read More
Inventors: Dalmasso, Ginette;, Assignee: Compagnie Internationale pour l'Informatique Cii-Honeywell Bull (Societe (Paris, FR) |
Successive approximation S/D converter with inherent quantization error centering
It is the object of the present invention to provide a synchro to digital successive approximation converter whose inherent quantization error centering is independent of both DC voltage and line-to-l... Read More
Inventors: Simon, David J.; Costello, Edward C.;, Assignee: The Singer Company (Little Falls, NJ) |
Data and parity prefetching for redundant arrays of disk drives
The present invention provides a system which improves the I/O performance of a computer system including a central processor unit or "host", an array of disk drives and a memory buffer cache. The dis... Read More
Inventors: Noya, Eric S.; Arnott, Randy M.; Rosich, Mitchell N.;, Assignee: Digital Equipment Corporation (Maynard, MA) |
Disk drive controller accepting first commands for accessing composite drives and second commands for individual diagnostic drive control wherein commands are transparent to each other
S Mass Storage Disk Drives Risk of Failure Disk Arrays ("RAID") Queuing Access Requests Innovative Disk Array System Dynamic Sector Rexnapping Fork/Join/Remain for Request Synchronization Dual-Queue/S... Read More
Inventors: Parks, Terry J.; Jeffries, Kenneth L.; Jones, Craig S.;, Assignee: Dell USA, L.P. (Austin, TX) |
Disk drive controller with a posted write cache memory
OF THE PREFERRED EMBODIMENT Referring now to FIG. 1, the letter D general represents a disk array controller incorporating the present invention. The disk array controller D has a local processor 30,... Read More
Inventors: Alexander, Dennis J.; Callison, Ryan A.; Perry, Ralph S.;, Assignee: Compaq Computer Corporation (Houston, TX) |
Decoupled DMA transfer list storage technique for a peripheral resource controller
The problems outlined above are in large part solved by a decoupled DMA transfer list storage technique for a peripheral resource controller in accordance with the present invention. In one embodiment... Read More
Inventors: Jones, Craig S.; Lory, Jay; Pecone, Victor K.;, Assignee: Dell USA, L.P. (Round Rock, TX) |
Apparatus and method for providing data redundancy and reconstruction for redundant arrays of disk drives
The present invention provides a system of hardware and software that combine to form a redundant array of disk drives. This array provides a double means of redundancy that can reconstruct data from ... Read More
Inventors: Hashemi, Ebrahim; Schulze, Martin E.;, Assignee: Hitachi Computer Products America, Inc. (Santa Clara, CA) |
Method and apparatus for enhancing throughput of disk array data transfers in a controller
In accordance with one embodiment of the present invention, there is provided a method for transferring data in a controller having a processor, a first bus and a controller resource, with the control... Read More
Inventors: Weber, Bret S.;, Assignee: Symbios Logic Inc. (Fort Collins, CO) |
Method and apparatus for efficient management of non-aligned I/O write request in high bandwidth raid applications
OF THE PREFERRED EMBODIMENT While the invention is susceptible to various modifications and alternative forms, a specific embodiment thereof has been shown by way of example in the drawings and will ... Read More
Inventors: DeKoning, Rodney A.; Fredin, Gerald J.;, Assignee: Symbios, Inc. (Fort Collins, CO) |
Apparatus and method for analyzing and modifying data transfer reguests in a raid system
The invention provides a method and apparatus for increasing the efficiency of data transfer between a host computer and a disk array in a RAID system. The invention operates by splitting up large I/O... Read More
Inventors: DeKoning, Rodney A.; Humlicek, Donald R.; Rink, Curtis W.;, Assignee: LSI Logic Corporation (Milpitas, CA) |
Method of and apparatus for storing and retrieving information containing disc utilizing a movable magazine
What is claimed is: 1. An apparatus for storing and retrieving information containing discs, comprising: (a) a disc storage magazine for storing a plurality of said information containing discs in ind... Read More
Inventors: Hug, Paul; Umeda, Bill; Yesnosky, Paul A.; Raudebaugh, Bart; Ricco, Gary; McCabe, Gary E.;, Assignee: Cygnet Systems (Sunnyvale, CA) |
Disk file apparatus
What is claimed is: 1. A disk file apparatus comprising: a pair of stockers arranged to be opposite to each other within a housing and having a plurality of disk cartridges piled up and stored therein... Read More
Inventors: Shibayama, Hitoshi;, Assignee: Aisin Seiki Kabushiki Kaisha (Kariya, JP) |
Document retrieval system
We claim: 1. Apparatus for selecting, removing and storing at least one desired document selected from among a plurality of undesired documents, comprising: a plurality of generally planar documents e... Read More
Inventors: Kalthoff, Robert J.; Neumeier, Paul J.;, Assignee: O. K. Partnership (Cincinnati, OH) |
Automatic changer for player/recorder of optical magnetic discs and cards
The principal object is to provide a very simple, economically realized system of high performance, which is easy to use. Another object is also to provide a system which permits the simple introducti... Read More
Inventors: Staar, Marcel J. H.;, Assignee: Staar Development Company S.A. (Brussels, BE) |
Data processing system with mixed media memory packs
OF THE INVENTION The current invention of information processing system comprises a CPU (central processing unit), a plural number of digital communication controllers, a plural number of analog comm... Read More
Inventors: Kuo, Sheafen F.;, Assignee: Frank Sheafen Kuo (Staten Island, NY) |
Self-timing optic lathe
The invention is broadly concerned with transference of, or, creation of, more general patterns, random or regular, which may be formed on surfaces, composed of two or three dimensions, or within liqu... Read More
Inventors: Dewar, Stephen W.; Breyfogle, Marvin G.;, Assignee: |
Data exchange system comprising a plurality of user terminals each containing a chip card reading device
The object of the present invention, then, is to find an optimum solution for the protection of a global secret cipher that makes it practically impossible to ferret out the respectively valid global ... Read More
Inventors: Kruse, Dietrich; Beutelspacher, Albrecht; Kersten, Annette-Gabriele;, Assignee: Siemens Aktiengesellschaft (Berlin and Munich, DE) |
I/O Systems 
