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:
Feb. 07, 1989
Filed:
Jan. 17, 1986
Applicant:
Inventors:
Noboru Ita, Yamato, JP;
Shigeru Mitsugi, Yamato, JP;
Assignee:
Panafacom Limited, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
364200 ; 364134 ;
Abstract
A plurality of processors use a common memory under a time division control mode by way of a time division data bus. In the multiprocessor system, flip-flops are mounted for holding respective write permission flags. Also, a logic gate is employed, operative to allow the processor to write data in the common memory when both the write permission flag and the write request signal from the processor are generated simultaneously. Further, multiplexers are used so that the write operation can be achieved under the time division control mode.