System which matches a received sequence of channel commands to sequence defining rules for predictively optimizing peripheral subsystem operations
October 22, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesDetection of sequential data stream Method and apparatus for peripheral data handling hierarchies Multi-channel shared resource processor Rules and apparatus for a loop capturing code buffer that prefetches instructions Sequentially processing data in a cached data storage system Interactive error handling means in database management Method for disk I/O transfer Paging receiver with dynamically programmable channel frequencies Patent #: 4978944 InventorsApplicationNo. 197056 filed on 05/20/1988US Classes:710/5, Input/Output command process718/102Process schedulingExaminersPrimary: Lee, Thomas C.Assistant: Coleman, Eric Attorney, Agent or FirmInternational ClassG06F 013/14AbstractA state of operation is established in accordance with rules for a peripheral subsystem which enables reduced channel time for executing ensuing related channel commands of the same channel program. In a peripheral data-storage subsystem, a set of rules of operation are established. Each rule sets forth a predetermined set of sequences of channel commands during any chain of channel commands (channel program) which predict ensuing channel operations in channel program currently being executed. Once any rule is satisfied, a state of operation is established in the subsystem for responding to ensuing channel commands in the same channel program and which relate to the channel commands set forth in the rules. So long as such related ensuing channel commands continue or until the end of the channel program the state of operation is maintained in the subsystem. During the state of operation, responding to the ensuing commands is speeded by performing preparatory subsystem operations before executing the ensuing channel commands. In a search for a desired record function, the state of operation causes data to be next searched to be staged to an electronic buffer such that the ensuing channel commands are executed at electronic speeds rather than related to the latency time of disk recorders.Other References
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