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:
Jan. 03, 1995
Filed:
Dec. 16, 1992
Hitachi, Ltd., Tokyo, JP;
Abstract
Because a bypass circuit BP connected in parallel with serial paths of first and second storage circuits MF and SF has less serially-connected stages of gates incorporated therein than the storage circuits and has shorter information transfer delay of input data to an output terminal 21 than the storage circuits, the bypass circuit BP outputs the information to the output terminal before the outputs of the storage circuits are determined when data supplied to a data input terminal 20 is fetched synchronously with a clock signal CK. The first and second storage circuits MF and SF are master/slave-operated in diagnosis mode, and the output operation of the bypass circuit BP is inhibited according to the states of signals C1 and C2 for controlling their master/slave operations regardless of the clock change of the first control signal CK. Thus, the master/slave operations of the first and second storage circuits MF and SF are assured in the diagnosis mode.