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. 20, 1984
Filed:
Aug. 19, 1982
Applicant:
Inventors:
Mamoru Sugie, Sayama, JP;
Takashi Toyooka, Sayama, JP;
Hirokazu Aoki, Hachioji, JP;
Kazuya Kamiyama, Tokyo, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365-1 ;
Abstract
A magnetic bubble memory device is provided with a plurality of memory modules each having at least one magnetic bubble chip. Each module generates a clock for determining the timing to drive the magnetic bubble chip and controls the operation of the magnetic bubble chip. The addresses of a main memory are cyclically allocated to the memory modules in a given unit, so that data transmission can be performed between the memory modules operated asynchronously with each other and the main memory allocated thereto.