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. 05, 2006
Filed:
Jan. 26, 2005
Kenji Suzuki, Kawasaki, JP;
Toru Osajima, Kawasaki, JP;
Shogo Tajima, Kawasaki, JP;
Shigenobu Satoh, Kawasaki, JP;
Kenji Suzuki, Kawasaki, JP;
Toru Osajima, Kawasaki, JP;
Shogo Tajima, Kawasaki, JP;
Shigenobu Satoh, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
Modulestoare disposed in a chip, and the moduleincludes a plurality of external buffer cellsdisposed along the peripheral of the module, and an internal circuitdisposed inside the plurality of external buffer cells. Input and output of signals is made between the internal circuitand the external circuit, through the external buffer cells. The output-stage transistor of each external buffer cell has a larger size than the transistor size of the internal circuit. The external buffer cellshave a driving capability for enabling direct driving of a transistor inside the chip through a wire having the maximum Manhattan length of a module-disposed region in on chip. If the disposed area of the plurality of external buffer cellsis not sufficient, the size of the module is enlarged, or repartition is made to reform the modules so that the plurality of external buffer cellshave their sufficient disposed area.