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:
Nov. 09, 1993
Filed:
Mar. 09, 1990
Shoo Urabe, Kawasaki, JP;
Masashi Tsuchida, Shibuya, JP;
Hideo Mutoh, Yokohama, JP;
Yukio Nakano, Yokohama, JP;
Toshio Honma, Yokohama, JP;
Kiyoshi Yata, Hadano, JP;
Hiroyuki Kitajima, Yokohama, JP;
Tadashi Ohsone, Yokohama, JP;
Nobuhiro Taniquchi, Hadano, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Microcomputer Engineering Ltd., Tokyo, JP;
Hitachi Software Engineering Co., Ltd., Yokohama, JP;
Abstract
With respect to input/output requests; a microprogram controls collection of data according to the data format; data accessing divides the requests for every recording medium and performs asynchronous processing; an on-line process is carried out in view of the processing priority order of the requests; parallel accessing sets requests for each medium; buffer control assures a block buffer and a page address list before receiving requests; data accessing sets a list of CCHHR codes in response to a continuous characteristic of the stored state in the recording medium; and mode deciding judges the two data transfer modes, a page search mode and a data search mode, in response to the requests.