The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 07, 1993

Filed:

Apr. 08, 1991
Applicant:
Inventors:

Gregory W Peterson, Lyons, CO (US);

Leonard J Kurzawa, Broomfield, CO (US);

Assignee:

Storage Technology Corporation, Louisville, CO (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G06F / ; G06F / ;
U.S. Cl.
CPC ...
395600 ; 364D / ; 3642821 ; 3642564 ; 3642551 ; 3642464 ; 364246 ; 364243 ; 36422281 ; 395275 ; 395425 ;
Abstract

A method is described for managing data records stored in non-volatile memory in a disk drive system with cache memory. A variable-length directory containing descriptors of disk records is used to locate a selected record non-volatile memory. A table, ordered sequentially by record number, is used to quickly locate a record in non-volatile memory without having to perform a time-consuming search. In order to efficiently utilize space in non-volatile memory, a list is kept of free space for storing record descriptors. After an initial nominal allocation, additional free space is allocated only when required, thus further increasing the efficiency of use of non-volatile memory.


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Peterson, Gregory. (1993). Non-volatile memory storage and bilevel index structure for fast (U.S. Patent No. 5269019). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5269019

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