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Class Information
Number: 714/766
Name: Error detection/correction and fault detection/recovery > Pulse or data error handling > Digital data error correction > Forward correction by block code > Memory access > Check bits stored in separate area of memory
Description: Subject matter including a section of memory for storage of the check bits separate from that the section of memory storing data information.

Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
5469450 Nonvolatile memory device including multi-ECC circuit Nov. 21, 1995
5469566 Flexible parity generation circuit for intermittently generating a parity for a plurality of data channels in a redundant array of storage units Nov. 21, 1995
5469453 Data corrections applicable to redundant arrays of independent disks Nov. 21, 1995
5467361 Method and system for separate data and media maintenance within direct access storage devices Nov. 14, 1995
5465275 Efficient utilization of present state/next state registers Nov. 7, 1995
5463643 Redundant memory channel array configuration with data striping and error correction capabilities Oct. 31, 1995
5463644 Resilient storage system Oct. 31, 1995
5463765 Disk array system, data writing method thereof, and fault recovering method Oct. 31, 1995
5457703 Array disk system and control method thereof Oct. 10, 1995
5457702 Check bit code circuit for simultaneous single bit error correction and burst error detection Oct. 10, 1995
5457791 Storage system and method of control Oct. 10, 1995
5455939 Method and apparatus for error detection and correction of data transferred between a CPU and system memory Oct. 3, 1995
5448578 Electrically erasable and programmable read only memory with an error check and correction circuit Sep. 5, 1995
5414720 Device and method using second error correction code for data in a recording medium May. 9, 1995
5412661 Two-dimensional disk array May. 2, 1995
5412668 Parity striping feature for optical disks May. 2, 1995
5404495 Microcomputer having an error-correcting function based on a detected parity error Apr. 4, 1995
5398253 Storage unit generation of redundancy information in a redundant storage array system Mar. 14, 1995
5392301 Programmable read only memory device having test tool for error checking and correction circuit Feb. 21, 1995
5377344 Selective memory transaction monitor system Dec. 27, 1994
5359611 Method and apparatus for reducing partial write latency in redundant disk arrays Oct. 25, 1994
5357529 Error detecting and correcting apparatus and method with transparent test mode Oct. 18, 1994
5337317 Minimizing the programming time in a semiconductor integrated memory circuit having an error correction function Aug. 9, 1994
5333143 Method and means for b-adjacent coding and rebuilding data from up to two unavailable DASDS in a DASD array Jul. 26, 1994
5331646 Error correcting code technique for improving reliablility of a disk array Jul. 19, 1994
5315602 Optimized stripe detection for redundant arrays of disk drives May. 24, 1994
5309451 Data and parity prefetching for redundant arrays of disk drives May. 3, 1994
5289477 Personal computer wherein ECC and partly error checking can be selectively chosen for memory elements installed in the system, memory elements enabling selective choice of error checking, and Feb. 22, 1994
5287364 Portable semiconductor data storage device Feb. 15, 1994
5283791 Error recovery method and apparatus for high performance disk drives Feb. 1, 1994
5278847 Fault-tolerant memory system with graceful degradation Jan. 11, 1994
5274645 Disk array system Dec. 28, 1993
5265104 Data storage system including redundant storage devices Nov. 23, 1993
5263031 Semiconductor integrated circuit having post-package testing function for error detection and correction circuit Nov. 16, 1993
5263030 Method and apparatus for encoding data for storage on magnetic tape Nov. 16, 1993
5245617 First-in, first-out memory circuit Sep. 14, 1993
5239656 Semiconductor memory device for self-correcting data output errors by taking the logical product of first and second identical data outputs Aug. 24, 1993
5235601 On-line restoration of redundancy information in a redundant array system Aug. 10, 1993
5202979 Storage system using multiple independently mechanically-driven storage units Apr. 13, 1993
5195099 Semiconductor memory device having improved error correcting circuit Mar. 16, 1993
5185746 Optical recording system with error correction and data recording distributed across multiple disk drives Feb. 9, 1993
5166939 Data storage apparatus and method Nov. 24, 1992
5130992 File-based redundant parity protection in a parallel computing system Jul. 14, 1992
5117428 System for memory data integrity May. 26, 1992
5063565 Single-error detecting and correcting system Nov. 5, 1991
5056095 Semiconductor memory having error correction circuit Oct. 8, 1991
5022031 Semiconductor memory comprising an on-chip error correction device, and integrated circuit comprising such a semiconductor memory Jun. 4, 1991
5012472 Dynamic type semiconductor memory device having an error checking and correcting circuit Apr. 30, 1991
4989206 Disk drive memory Jan. 29, 1991
4930129 IC card having internal error checking capability May. 29, 1990

1 2 3 4 5 6 7 8

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