Patent ID: 6490636
Filing Date: 2002-12-03
Classification: G06F

Abstract:
A data processing system which is provided with a data processing device which issues input and output commands, and a secondary storage device which is connected to said data processing device via signal lines and which conducts data exchange with the data processing device in accordance with the input and output commands,wherein said data processing device comprises: a first tag attachment device for attaching a first tag which is identical with respect to a series of input and output commands for accessing a continuous region of said secondary storage device, among the input and output commands to be issued in response to input and output requests from a host, and which differs from other input and output commands simultaneously executed; a second tag attachment device for attaching a second tag for identifying respective input and output commands to which the same first tag is attached by means of said first tag attachment device; an input and output command generating device for generating input and output commands having first and second tags attached thereto by said first and second tag attachment devices; and an input and output command transmitter for transmitting input and output commands generated by said input and output command generating device to said secondary storage device via said signal lines; and said secondary storage device comprising: an input and output command receiver for receiving input and output commands transmitted by said input and output command transmitter, via said signal lines; an input and output command storage device for storing input and output commands received by said input and output command receiver; an input and output command arrangement device for arranging input and output commands in accordance with said first and second tags attached to said input and output commands and storing the arranged input and output commands in said input and output command storage device; and an input and output command executing device for executing, in order, input and output commands arranged by said input and output command arrangement device and stored in said input and output command storage device.