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.
Patent No.:
Date of Patent:
Jul. 16, 2024
Filed:
Feb. 15, 2023
Hitachi, Ltd., Tokyo, JP;
Kazuhiko Mogi, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
A storage control apparatus generates an evaluated compression dictionary from a compression dictionary. The compression dictionary includes, for each of different values included in original data of compressed data, a value and a compression code. The evaluated compression dictionary includes, for each value in the compression dictionary, a value and a compression code. The compressed data includes a compression code for each value in the original data. The storage control apparatus performs, in generation or update of the evaluated compression dictionary, condition evaluation of the value. A compression code of a value determined to correspond to the search condition in the condition evaluation is a condition satisfied code. The storage control apparatus is configured to, in the search, for a compression code in the search range of the compressed data: output, when there is an evaluation dictionary record including a condition satisfied code matching the compression code, a value in the evaluation dictionary record; and output, when there is no evaluation dictionary record including a condition satisfied code matching the compression code, a value that means inconsistency.