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:
Aug. 13, 2002
Filed:
Oct. 07, 1999
Yuuji Ishii, Kawasaki, JP;
Kunihiko Kawaguchi, Kawasaki, JP;
Fujitsu Limited, Kanagawa, JP;
Abstract
Input/output AC characteristics of a hard macro cell is specified in advance, delay cells and are provided in the input and output sides of the hard macro cell, and signal propagation delay times of the delay cells and are set so as to satisfy the specifications. These delay times are determined in such a way that no timing error occurs at the data inputs D of the D flip-flops and on condition that D flip-flops and are arranged outside the hard macro cell A, the data output end Q of the D flip-flop is directly connected by a line to the data input end DI of the hard macro cell A, the data input end of the external synchronous flip-flop is directly connected to the data output end DO of the hard macro cell A, and a clock CLK is commonly provided to the clock input ends CK of the hard macro cell A and the D flip-flops and
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile