Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2011-03-15
2011-03-15
Chery, Mardochee (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
C365S200000
Reexamination Certificate
active
07908435
ABSTRACT:
A disk-controller (110) that is within a disk memory system (100) initiates the auto-transfer of host-requested-data from cache memory (120) without the intervention of a microprocessor (130) that is within the disk memory system. The system performs auto-transfer, without the intervention of the microprocessor, even when the first block of host-requested-data (301) is not within cache memory (311). The system includes disk-controller circuitry (11) that determines when at least a portion of the host-requested-data is somewhere within cache memory. When only a portion of the host-requested-data is found within cache memory, and the first block of host-requested-data is not the first block of data within cache memory, the circuitry (112) generates a new Cache-Counter-Value, a new Cache-Pointer-Value and a new Cache-Start-Address value, which new values are used to initiate the auto-transfer of this cache-resident-portion of the host-requested-data from cache memory, as the power of the microprocessor is concurrently used to fetch the missing host-requested-data from a magnetic disk device (140).
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Chery Mardochee
Jorgenson Lisa K.
Slater Steven H.
STMicroelectronics NV
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