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5218685 |
System for write once read many optical storage devices to appear rewritable
A system for Write Once Read Many (WORM) optical storage devices to appear rewritable uses magnetic disk storage and optical WORM storage subsystem. All new write operations are made to a magnetic...
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5136706 |
Adaptive memory management system for collection of garbage in a digital computer
A memory management system for a digital computer divides a virtual memory space into regions. Each region has attributes indicating generation, volatility, and activity. During garbage collection,...
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4967353 |
System for periodically reallocating page frames in memory based upon non-usage within a time period or after being allocated
A method for memory management and block paging in a control program that controls the execution of tasks on behalf of a plurality of system computing entities, which selects, transfers blocks of...
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4758944 |
Method for managing virtual memory to separate active and stable memory blocks
A pointer, N, indicates an address in a virtual memory space of a demand paged memory including a plurality of virtual address pages and a fixed number of physical memory pages into which blocks of...
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4574346 |
Method and apparatus for peripheral data handling hierarchies
Data supplied to a data storage system by a host processor has one of two use status. A first use status is that the supplied data is to be retentively stored in the data storage system. A second...
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4571674 |
Peripheral storage system having multiple data transfer rates
Fast and slow channels are attached to a cached peripheral storage system, having a front store and a backing store preferably with a plurality of data storage devices. The peripheral data storage...
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4511994 |
Multi-group LRU resolver
A logic system maintains current least recently used information among the elements of each group in a plurality of groups where each group includes two or more elements. A memory stores...
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4422145 |
Thrashing reduction in demand accessing of a data base through an LRU paging buffer pool
A CPU implementable method for minimizing thrashing among concurrent processes demand page accessing a data base through an LRU page organized buffer pool. There is ascertained the set of pages...
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4400793 |
Method and arrangement for fast access to CCD-stores
To reduce the mean access time to storage blocks in CCD storage, a block which is most likely to be accessed next is detected after each access. While the accessed block is being processed, a...
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4399503 |
Dynamic disk buffer control unit
A programmable control unit for disk memory and controller comprising a microprocessor (MPU), random access memory (RAM) used as a buffer to cache disk resident data used by a data processing...
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4371924 |
Computer system apparatus for prefetching data requested by a peripheral device from memory
A computer system apparatus is disclosed for improved handling of requests by a peripheral device for data from memory. The apparatus serially receives multiple memory addresses from which data is...
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4361878 |
Degradable LRU circuit
A modified least recently used resolving network provides the capability of ignoring any one or more of the signals indicating use of the device in resolving the least recently used status of the...
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4334289 |
Apparatus for recording the order of usage of locations in memory
There is disclosed herein an apparatus for encoding, storing, updating and decoding data indicating the order of usage of memory locations as in a cache memory. An array of memory bits is encoded...
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4198683 |
Multiple waveform storage system
A system for storing waveforms in which each waveform is converted to digital data and stored in a memory sector under the control of a history controller to select the sector and memory counter to...
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4115855 |
Buffer memory control device having priority control units for priority processing set blocks and unit blocks in a buffer memory
For extracting a unit data block of the lowest priority from a plurality of unit data blocks stored in a buffer memory of large capacity, the unit data blocks are divided into set blocks, each...
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4092731 |
Device for suppressing multiple registrations in a data store
A device for the suppression of multiple registrations of identical data in a data store, as a result of shuttle movements between inquiry and response devices of the data transmission system,...
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4080651 |
Memory control processor
A memory control processor adapted to expand a random access or accelerator memory by logical overlays which performs these overlays into memory fields (pages) on the basis of page usage history....
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4080652 |
Data processing system
A memory control processor adapted to expand a random access or accelerator memory by logical overlays which performs these overlays into memory fields (pages) on the basis of page usage history....
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3984817 |
Data processing system having improved program allocation and search technique
Resources in a data processing system's memory are allocated to a plurality of programs based upon their activity level. The least active programs in the system have their memory space deallocated...
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3806883 |
LEAST RECENTLY USED LOCATION INDICATOR
Storage registers equal in number to the number of addressable locations in an associated store of items, such as a content addressable memory, each of which holds one memory address. When a...
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