File access processing system of a computer enabling high-speed

Details File access processing system of a computer enabling high-speed File access processing system of a computer enabling high-speed

1994-04-04

1995-04-25

Kriess, Kevin A.

Boots, shoes, and leggings

395425, 395700, 3642432, 364251, 364280, 364DIG1, G06F 1540, G06F 15415

Patent

active

054106940

ABSTRACT:
In a file access processing system for executing sequential access for a copied file in a data processing device which includes a data processing unit and an access processing unit, and the data processing device being connected to an external storage device having a file management table and a copy file, the access processing unit includes: an access executing unit for executing an access to the file management table and the copy file in the external storage device; a setting unit for setting file organization information into the file management table, after the setting unit obtains the file organization information, which indicates whether the file is a record file or it is a stream file, by referring to the head information of the file when the copied file is first sequentially accessed; and a judgment unit for detecting whether the file is a record file or it is the stream file by referring to the file organization information set into the file management table of the file when the copied file is sequentially accessed; wherein, when the file is the stream file in accordance with the information detected by the judgment unit, the judgment is executed as the requested sequential access is the sequential access for the stream file, then the sequential access for the stream file is executed without referring to the head information of the stream file.

REFERENCES:
patent: 5008820 (1991-04-01), Christopher, Jr. et al.
patent: 5021995 (1991-06-01), Quint et al.
patent: 5115490 (1992-05-01), Komuro et al.
patent: 5212772 (1993-05-01), Masters
Robert Jourdain, "Programmer's Problem Solver for the IBM PC, XT & AT", 1986, Ch. 5, pp. 241-326.

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