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:
Apr. 16, 1985
Filed:
Jun. 21, 1982
Applicant:
Inventors:
Tetsuo Machida, Machida, JP;
Susumu Tsuhara, Sagamihara, JP;
Kuniaki Tabata, Tokyo, JP;
Yasuyuki Okada, Sagamihara, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
364200 ; 340724 ; 340750 ; 340801 ;
Abstract
A memory control unit for a computer has the function of extracting or synthesizing only a necessary portion from or to two-dimensional image scan data, in addition to a conventional main memory function. It comprises an address controller for calculating an address of data to be transferred based on source and destination start addresses A.sub.1 and A.sub.2 of the two-dimensional image scan data, a lateral length W.sub.1 and a longitudinal length of the necessary portion, and lengths I.sub.1 and I.sub.2 of unnecessary portion, and a controller for controlling memory read/write operation.