Electrical computers and digital processing systems: memory – Storage accessing and control
Patent
1996-12-30
1998-06-09
Lim, Krisna
Electrical computers and digital processing systems: memory
Storage accessing and control
395250, G06F 1110
Patent
active
057651868
ABSTRACT:
A data storage apparatus 20 comprises several disc stores 21 to 24 connected to respective RAM buffers 37 to 40 by respective data interfaces and highways 25 to 36. Sets of data are stored in the disc stores with the data in each set being distributed among the disc stores. The apparatus comprises a controller 51 which, in response to an external request for data, generates control data identifying one or more sets of data to be transferred between the disc stores and the RAM buffers. The control data is transferred to the disc stores 21 to 24 via the respective data interfaces and highways 25 to 36. When data is ready for transfer a signal is sent from the interfaces 33 to 36 and once the controller has received signals from each of the interfaces it enables data to be transferred between the interfaces and respective RAM buffers. A data highway 49 is provided for connection to external apparatus for a substantially continuous sequential transfer of the data in the identified set or all of the identified sets. Data is transferred between the RAM buffers 37 to 40 and the data highway 49 under the control of the controller 51. The highway 49 may be provided with error checking circuitry 55 to 57.
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Lim Krisna
Maung Zarni
Quantel Limited
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