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:
Mar. 14, 1995
Filed:
Mar. 23, 1994
Satoshi Yoshida, Akigawa, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
Prior to retrieval of records from a data file, keywords, as boundary values of condition ranges, which are input as record retrieval condition ranges are sorted and arranged in a given order. Identification information indicating that boundary ranges each defined by adjacent keywords of the keywords arranged in the given order are included in the retrieval condition ranges are assigned in correspondence with the boundary ranges. Thereafter, records are retrieved in accordance with the keywords in the boundary ranges in which the identification information are assigned. Therefore, even if designated record retrieval condition ranges overlap, ranges in which records are read out from the data file are limited to required ranges, and the same records are not read out a plurality of times.