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Class Information
Number: 711/141
Name: Electrical computers and digital processing systems: memory > Storage accessing and control > Hierarchical memories > Caching > Coherency
Description: Subject matter further comprising means or steps not specifically covered above for assuring that the data


Sub-classes under this class:

Class Number Class Name Patents
711/145 Access control bit 740
711/144 Cache status data bit 976
711/146 Snooping 718
711/143 Write-back 488
711/142 Write-through 201


Patents under this class:

Patent Number Title Of Patent Date Issued
6092159 Implementation of configurable on-chip fast memory using the data cache RAM Jul. 18, 2000
6088768 Method and system for maintaining cache coherence in a multiprocessor-multicache environment having unordered communication Jul. 11, 2000
6088769 Multiprocessor cache coherence directed by combined local and global tables Jul. 11, 2000
6088770 Shared memory multiprocessor performing cache coherency Jul. 11, 2000
6085292 Apparatus and method for providing non-blocking pipelined cache Jul. 4, 2000
6085293 Non-uniform memory access (NUMA) data processing system that decreases latency by expediting rerun requests Jul. 4, 2000
6081874 Non-uniform memory access (NUMA) data processing system that speculatively issues requests on a node interconnect Jun. 27, 2000
6079002 Dynamic expansion of execution pipeline stages Jun. 20, 2000
6073211 Method and system for memory updates within a multiprocessor data processing system Jun. 6, 2000
6073216 System and method for reliable system shutdown after coherency corruption Jun. 6, 2000
6073217 Method for detecting updates to instructions which are within an instruction processing pipeline of a microprocessor Jun. 6, 2000
6070231 Method and apparatus for processing memory requests that require coherency transactions May. 30, 2000
6070233 Processor bus traffic optimization system for multi-level cache utilizing reflection status bit to indicate data inclusion in higher level cache May. 30, 2000
6067603 Non-uniform memory access (NUMA) data processing system that speculatively issues requests on a node interconnect May. 23, 2000
6065098 Method for maintaining multi-level cache coherency in a processor with non-inclusive caches and processor implementing the same May. 16, 2000
6061764 Coherent variable length reads which implicates multiple cache lines by a memory controller connected to a serial and a pipelined bus utilizing a plurality of atomic transactions May. 9, 2000
6061765 Independent victim data buffer and probe buffer release control utilzing control flag May. 9, 2000
6055610 Distributed memory multiprocessor computer system with directory based cache coherency with ambiguous mapping of cached data to main-memory locations Apr. 25, 2000
6052760 Computer system including plural caches and utilizing access history or patterns to determine data ownership for efficient handling of software locks Apr. 18, 2000
6052761 Increment update in an SCI based system Apr. 18, 2000
6049809 Replication optimization system and method Apr. 11, 2000
6049851 Method and apparatus for checking cache coherency in a computer architecture Apr. 11, 2000
6049866 Method and system for an efficient user mode cache manipulation using a simulated instruction Apr. 11, 2000
6044438 Memory controller for controlling memory accesses across networks in distributed shared memory processing systems Mar. 28, 2000
6044478 Cache with finely granular locked-down regions Mar. 28, 2000
6038644 Multiprocessor system with partial broadcast capability of a cache coherent processing request Mar. 14, 2000
6038645 Microprocessor circuits, systems, and methods using a combined writeback queue and victim cache Mar. 14, 2000
6032228 Flexible cache-coherency mechanism Feb. 29, 2000
6032230 Method and apparatus that detects and tolerates inconsistencies between the cache and main memory, and the translation lookaside buffer and the virtual memory page table in main memory Feb. 29, 2000
6032231 Multiprocessor with split transaction bus architecture providing cache tag and address compare for sending retry direction to other bus module upon a match of subsequent address bus cycles to Feb. 29, 2000
6029204 Precise synchronization mechanism for SMP system buses using tagged snoop operations to avoid retries Feb. 22, 2000
6023747 Method and system for handling conflicts between cache operation requests in a data processing system Feb. 8, 2000
6021472 Information processing device and control method thereof Feb. 1, 2000
6021473 Method and apparatus for maintaining coherency for data transaction of CPU and bus device utilizing selective flushing mechanism Feb. 1, 2000
6021474 Apparatus and method of snooping processors and look-aside caches Feb. 1, 2000
6018763 High performance shared memory for a bridge router supporting cache coherency Jan. 25, 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
6016532 Method for handling data cache misses using help instructions Jan. 18, 2000
6014751 Method and apparatus for maintaining cache coherency in an integrated circuit operating in a low power state Jan. 11, 2000
6012127 Multiprocessor computing apparatus with optional coherency directory Jan. 4, 2000
6012134 High-performance processor with streaming buffer that facilitates prefetching of instructions Jan. 4, 2000
6003116 Multiplexed computer system with the capability to copy data from one processor memory to another Dec. 14, 1999
6000015 Processor bus traffic optimization system for multi-level cache utilizing reflection status bit to indicate data inclusion in a higher level cache Dec. 7, 1999
5996049 Cache-coherency protocol with recently read state for data and instructions Nov. 30, 1999
5996050 Cache coherency detection in a bus bridge verification system Nov. 30, 1999
5987496 Real-time channel-based reflective memory Nov. 16, 1999
5987571 Cache coherency control method and multi-processor system using the same Nov. 16, 1999
5978886 Method and apparatus for duplicating tag systems to maintain addresses of CPU data stored in write buffers external to a cache Nov. 2, 1999
5974509 Method for purging unused data from a cache memory Oct. 26, 1999
5974511 Cache subsystem with pseudo-packet switch Oct. 26, 1999



 
 
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