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:
Dec. 29, 1992
Filed:
Dec. 23, 1991
Applicant:
Inventors:
Tadashi Hara, Tokyo, JP;
Koichi Tada, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395725 ; 3642468 ; 364230 ; 364D / ; 3649692 ; 364D / ;
Abstract
A lock processing system which judges locking requests from a plurality of processors. The lock processing system contains two system control units. Locking or unlocking information is transferred between the two system control units. The lock processing system stores the information transferred between the two system control units and judges whether there is a conflict for locking or unlocking. The lock processing system dispenses with hardware otherwise needed for transferring between system control units.