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:
Mar. 10, 1992
Filed:
Oct. 09, 1990
Hisashige Ando, Santa Clara, CA (US);
Hung C Lai, Cupertino, CA (US);
John J Zasio, Sunnyvale, CA (US);
Fujitsu Limited, Kawasaki, JP;
Abstract
Integrated circuit formed from a semiconductor body having a rectangular grid pattern formed on the body. The grid pattern is defined by lines extending at right angles to each other along X and Y axes. A plurality of basic cells are provided which have a plurality of active elements therein. Each of the basic cells is selected from a limited number of basic cells of different designs. Each of the basic cells is disposed within a rectangular area no greater than a predetermined size and overlying a plurality of grid lines on both the X and Y axes so that each basic cell overlies a plurality of intersections of the grid lines which define predetermined grid points. Each basic cell includes a power bus, a ground bus, input leads and an output having a predetermined arrangement with respect to certain grid points. The power bus and ground bus and the input leads and output of each basic cell are connected to the basic cell. Leads are provided for connecting the basic cells to form larger integrated circuit units which are called unit cells. The unit cells are connected to form still larger integrated circuits called a function block (FB).