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Class Information
Number: 711/155
Name: Electrical computers and digital processing systems: memory > Storage accessing and control > Control technique > Read-modify-write (rmw)
Description: Subject matter including provisions for performing an access operation where the contents of a given memory


Patents under this class:
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Patent Number Title Of Patent Date Issued
6557086 Memory write and read control Apr. 29, 2003
6553465 Multiprocessor system with distributed shared memory having hot plug function for main memories Apr. 22, 2003
6526482 Method of and apparatus for tracking appended data on storage medium Feb. 25, 2003
6493803 Direct memory access controller with channel width configurability support Dec. 10, 2002
6480928 Memory rewriting system for vehicle controller Nov. 12, 2002
6463503 Method and system for increasing concurrency during staging and destaging in a log structured array Oct. 8, 2002
6457104 System and method for recycling stale memory content in compressed memory systems Sep. 24, 2002
6415364 High-speed memory storage unit for a multiprocessor system having integrated directory and data storage subsystems Jul. 2, 2002
6405293 Selectively accessible memory banks for operating in alternately reading or writing modes of operation Jun. 11, 2002
6389517 Maintaining snoop traffic throughput in presence of an atomic operation a first port for a first queue tracks cache requests and a second port for a second queue snoops that have yet to be fil May. 14, 2002
6370625 Method and apparatus for lock synchronization in a microprocessor system Apr. 9, 2002
6370631 Memory controller including compression/decompression capabilities for improved data access Apr. 9, 2002
6356991 Programmable address translation system Mar. 12, 2002
6353877 Performance optimization and system bus duty cycle reduction by I/O bridge partial cache line write Mar. 5, 2002
6347360 Apparatus and method for preventing cache data eviction during an atomic operation Feb. 12, 2002
6343343 Disk arrays using non-standard sector sizes Jan. 29, 2002
6339813 Memory system for permitting simultaneous processor access to a cache line and sub-cache line sectors fill and writeback to a system memory Jan. 15, 2002
6336164 Method and system for preventing deadlock in a log structured array Jan. 1, 2002
6332181 Recovery mechanism for L1 data cache parity errors Dec. 18, 2001
6295578 Cascaded removable media data storage system Sep. 25, 2001
6289065 FIFO status indicator Sep. 11, 2001
6279088 Memory device with multiple processors having parallel access to the same memory area Aug. 21, 2001
6269424 Disk array device with selectable method for generating redundant data Jul. 31, 2001
6266743 Method and system for providing an eviction protocol within a non-uniform memory access system Jul. 24, 2001
6260103 Read-while-write memory including fewer verify sense amplifiers than read sense amplifiers Jul. 10, 2001
6230237 Content addressable memory with an internally-timed write operation May. 8, 2001
6230235 Address lookup DRAM aging May. 8, 2001
6226017 Methods and apparatus for improving read/modify/write operations May. 1, 2001
6223259 Reducing read cycle of memory read request for data to be partially modified by a pending write request Apr. 24, 2001
6219745 System and method for entering a stream read buffer mode to store non-cacheable or block data Apr. 17, 2001
6173381 Memory controller including embedded data compression and decompression engines Jan. 9, 2001
6170047 System and method for managing system memory and/or non-volatile memory using a memory controller with integrated compression and decompression capabilities Jan. 2, 2001
6154807 Memory system performing fast access to a memory location by omitting the transfer of a redundant address Nov. 28, 2000
6148300 Hybrid queue and backoff computer resource lock featuring different spin speeds corresponding to multiple-states Nov. 14, 2000
6128711 Performance optimization and system bus duty cycle reduction by I/O bridge partial cache line writes Oct. 3, 2000
6112255 Method and means for managing disk drive level logic and buffer modified access paths for enhanced raid array data rebuild and write update operations Aug. 29, 2000
6105114 Two-dimensional array transposition circuit reading two-dimensional array in an order different from that for writing Aug. 15, 2000
6078999 Recovering from a failure using a transaction table in connection with shadow copy transaction processing Jun. 20, 2000
6073158 System and method for processing multiple received signal sources Jun. 6, 2000
6073219 Semiconductor memory device with high speed read-modify-write function Jun. 6, 2000
6073211 Method and system for memory updates within a multiprocessor data processing system Jun. 6, 2000
6067635 Preservation of data integrity in a raid storage device May. 23, 2000
6061783 Method and apparatus for manipulation of bit fields directly in a memory source May. 9, 2000
6032233 Storage array allowing for multiple, simultaneous write accesses Feb. 29, 2000
6021463 Method and means for efficiently managing update writes and fault tolerance in redundancy groups of addressable ECC-coded sectors in a DASD storage subsystem Feb. 1, 2000
6018791 Apparatus and method of maintaining cache coherency in a multi-processor computer system with global and local recently read states Jan. 25, 2000
5996052 Method and circuit for enabling a clock-synchronized read-modify-write operation on a memory array Nov. 30, 1999
5987572 Method and apparatus employing a dynamic encryption interface between a processor and a memory Nov. 16, 1999
5974514 Controlling SDRAM memory by using truncated burst read-modify-write memory operations Oct. 26, 1999
5963960 Method and apparatus for queuing updates in a computer system Oct. 5, 1999

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