Error correction method and apparatus for headers
OF THE DRAWINGS FIG. 1 shows an error correction system 1000 (framed by broken lines) which is included in a utilization device 1002. Utilization device 1002 includes a device microprocessor 1003 and... Read More
Inventors: Zook, Christopher P.;, Assignee: Cirrus Logic, Inc. (Fremont, CA) |
Method and apparatus for detecting bad frames of information in a communication system
OF A PREFERRED EMBODIMENT A digital cellular radiotelephone system implements detection of bad frames of information by utilizing multiple bit correction thresholds in accordance with the invention. ... Read More
Inventors: Wood, Sandra L.; Kundmann, Thomas J.; Proctor, Lee M.; Stewart, Ken;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Microprocessor system generating instruction fetch addresses at high speed
To achieve the foregoing object and in accordance with the present invention, there is provided a microprocessor system which comprises an arithmetic logic unit for generating flags, a flag update det... Read More
Inventors: Maeda, Toshinori; Kawada, Tomoharu; Miyake, Jiro;, Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP) |
System for operating input, processing and output units in parallel and using DMA circuit for successively transferring data through the three units via an internal memory
It is accordingly an object of the present invention to provide a data input-output device that does not need to include different memories for storing data input at a first transmission rate and data... Read More
Inventors: Nakatsuji, Fumio; Maeda, Toshinori; Kamiyama, Hiroshi;, Assignee: Matsushita Electric Industrial, Co. (JP) |
Hardware design for majority voting, and testing and maintenance of majority voting
In general, as mentioned above, majority voting is applicable in many fields of technology, and to different types of input signals. In the following however, the invention will be described with ref... Read More
Inventors: Davidsson, Stefan Hans Bertil; Martinsson, Ola Per; Carlsson, Carl Michael;, Assignee: Telefonaktiebolaget LM Ericsson (publ) (Stockholm, SE) |
Device and method using second error correction code for data in a recording medium
It is therefore an object of the present invention to provide a data reproducing device and a method for controlling the device wherein the data is reproduced from the ROM at a high speed. The object ... Read More
Inventors: Kadokawa, Yuichi;, Assignee: Ricoh Company, Ltd. (Tokyo, JP) |
Error correcting code retrofit method and apparatus for multiple memory configurations
The foregoing problems and shortcomings of the prior art are overcome and further advantageous features are provided by the present invention wherein a method and apparatus for implementing an ECC whi... Read More
Inventors: Chen, Chin-Long; Dell, Timothy Jay; Kwan, Wayne C.;, Assignee: International Business Machines Corporation (Armonk, NY) |
Device level busy arrangement for mass storage subsystem including a plurality of devices
The invention provides a new and improved digital computer system and mass storage subsystem for use in such system, for enhancing the real- or near-real-time processing of transactions in connection ... Read More
Inventors: Farley, Martin;, Assignee: EMC Corporation (Hopkinton, MA) |
Magnetic recording disk with equally-spaced servo sectors extending across multiple data bands
Toward this end, and according to the invention, a method and means is described wherein servo sectors written on a disk (or servo sections written on a tape) are equally spaced on a given track and r... Read More
Inventors: Hetzler, Steven R.;, Assignee: International Business Machines Corporation (Armonk, NY) |
Method and apparatus for correcting misaligned instruction data
One aspect of the invention relates to a method useful in a microprocessor having a plurality of execution units, rename registers, architectural registers and a cache for storing blocks of data, each... Read More
Inventors: Patel, Rajesh Bhikhubhai; Mallick, Soummya;, Assignee: International Business Machines Corporation (Armonk, NY) |
Data error detection and correction system
OF THE PREFERRED EMBODIMENT The following disclosures are hereby incorporated by reference: U.S. application Ser. No. 08/324,016, entitled "Single Bank, Multiple Way Cache Memory," by Sompong P. Olar... Read More
Inventors: Walker, William J.; Goodrum, Alan L.; Mayer, Dale J.;, Assignee: Compaq Computer Corporation (Houston, TX) |
Integrated memory
It is accordingly an object of the invention to provide an integrated memory that overcomes the above-mentioned disadvantages of the prior art devices of this general type, which has an error correcti... Read More
Inventors: Mc Connell, Roderick; Richter, Detlev;, Assignee: Siemens Aktiengesellschaft (Munich, DE) |
Method of processing stored data containing parity data
In accordance with the present invention, parity data for each sector is produced either by performing an Exclusive-Or operation between the data in the unmodified sectors and the modified data (refer... Read More
Inventors: Wang, Yun-Huei; Wu, Chung-Hua;, Assignee: Acer Incorporated (Taipei, TW) |
Checking for proper locations of storage devices in a storage device array
The present invention is directed to method and apparatus for verifying that each storage device is in the correct physical position in a storage device array. That is, a determination is made as to w... Read More
Inventors: Larson, David; Stubbs, Robert E.; Edstrom, Gene;, Assignee: Fujitsu Limited (Kanagawa, JP) |
Selectively updateable mapped data storage system
OF PREFERRED EMBODIMENTS FIG. 6 is a schematic block diagram of the selectively updateable mapped data storage system according to the invention. As shown, the data storage system of the invention in... Read More
Inventors: Mou, Yanan;, Assignee: United Microelectronics Corp. (Hsinchu, TW) |
Data storage system and method employing a write-ahead hash log
The problems outlined above may in large part may be solved by various embodiments of a data storage system and method employing a write-ahead hash log as described below. In one embodiment, a data st... Read More
Inventors: Howard, John H.; Stein, Christopher A.;, Assignee: Sun Microsystems, Inc. (Santa Clara, CA) |
Address translation unit for translation of virtual address to real address using translation tables of multi-level hierarchical structure
An object of the present invention is to provide an address translation unit which reduces the number of reference accesses to the multi-level address translation tables implemented when the entry con... Read More
Inventors: Gotou, Shizuo; Kagimasa, Toyohiko;, Assignee: Hitachi, Ltd. (Tokyo, JP) |
Method and apparatus for generating high power laser pulses in the two to six micron wavelength range
OF THE INVENTION Raman Scattering in the Present Invention In the laser pulse generators of the present invention, an opposite approach is taken and, through methods and apparatus described below, in... Read More
Inventors: MacPherson, David C.; Nelson, Loren D.; O'Brien, Martin J.;, Assignee: Ophir Corporation (Littleton, CO) |
System and method for striping data across multiple disks for continuous data streaming and increased bus utilization
The present invention provides a method and system for storage and delivery of a plurality of data files. The system and method comprise providing a first disk and second disk, the first and second di... Read More
Inventors: Martini, Edward W.;, Assignee: Digital Video Systems, Inc. (Santa Clara, CA) |
Method to ensure data integrity in a telecommunications network
According to the invention, this object is accomplished by providing a method of generating and checking a Frame Check Sequence (FCS) for a message formed as a sequence of n-bit data bytes and inserti... Read More
Inventors: Glaise, Rene; Jacquart, Xavier;, Assignee: International Business Machines Corporation (Armonk, NY) |
Method and circuitry for generating r-bit parallel CRC code for an l-bit data source
Therefore, the main objective of the present invention is to provide a method and circuitry for generating r-bit parallel CRC code for an L-bit data source, which method and circuitry can overcome the... Read More
Inventors: Chen, Kim-Joan; Chang, Ching-Long;, Assignee: National Science Council of R.O.C. (Taipei, TW) |
Cyclic code check bits generation and error correction using sum of remainders
In accordance with the present invention check bits for a cyclic code are generated for a binary integer by first obtaining a unique remainder value for each bit of the integer resulting from dividing... Read More
Inventors: Willy, John S.;, Assignee: Allied Telesyn International Corporation (Sunnyvale, CA) |
Method and apparatus for G.706 frame alignment and CRC procedure test tool
In order to comply with CCITT G.706 recommendation, a device has to satisfy a series of test cases that are predetermined. Each test case contains test sequences according to the CCITT G.706 specifica... Read More
Inventors: Benayoun, Alain; Le Pennec, Jean-Francois; Michel, Patrick; Clara, Jean-Louis; Cresp, Jacques;, Assignee: Cisco Technology, Inc. (San Jose, CA) |
A CCD array memory device achieving high speed accessing by writing and reading data through a cache memory
The present invention solves the above-mentioned problems and has an object to provide a memory device for realizing an analog memory or a multilevel memory easy to produce and of small scale circuit.... Read More
Inventors: Yamamoto, Makoto;, Assignee: Yozan Inc. (Tokyo, JP) |
Disc array system having disc storage devices dispersed on plural boards and accessible at withdrawal of part of the boards
With the fifth prior art outlined above, the arrays each comprising a plurality of disc drives are mounted on a common mother board so that numerous small drives are installed at high density. However... Read More
Inventors: Kakuta, Hitoshi; Takamoto, Yoshifumi; Kagimasa, Toyohiko;, Assignee: Hitachi, Ltd. (Tokyo, JP) |
Data storage library with media destaging and prestaging for improved response time
The present invention is a data storage library of removable media with means for destaging and prestaging the media, and a method for improving the response time of the library by destaging and prest... Read More
Inventors: Ng, Spencer Wah-Fung;, Assignee: International Business Machines Corporation (Armonk, NY) |
Instruction operation size optimization
A method and apparatus for optimizing instruction operation sizes of various instructions in the generated code of a compiled program is disclosed. The disclosed method and apparatus has particular ap... Read More
Inventors: Smith, Kevin J.; Kenner, Hugh R.;, Assignee: Intel Corporation (Santa Clara, CA) |
Combined power and control signal transmission system
In accordance with the present invention, electrical power and communication signals are transmitted concurrently along a common electrical conductor. Preferably, the electrical communication signal i... Read More
Inventors: Crowe, Wayne D.;, Assignee: Ferranti Subsea Systems, Ltd. (London, GB2) |
Thick-film non-step resistor with accurate resistance characteristic
It is a principal object of the present invention to provide a variable resistor apparatus with a smooth and accurately controllable resistance characteristic. It is another object of the invention to... Read More
Inventors: Gaston, Robert D.; Patel, Daxesh K.;, Assignee: Ford Motor Company (Dearborn, MI) |
Carrierless amplitude and phase modulation telementry for use in electric wireline well logging
The present invention is an apparatus for communicating signals from a well logging tool to a recording unit. Part of the apparatus disposed in the logging tool includes a source of digital bits repre... Read More
Inventors: Doyle, Mark R.; Liu, Fuling; Maxit, Jorge O.;, Assignee: Western Atlas International, Inc. (Houston, TX) |
Fault Detection 
