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:
Jun. 26, 1990
Filed:
Sep. 19, 1988
Applicant:
Inventors:
F Matthew Rhodes, Arlington, MA (US);
Jack I Raffel, Lexington, MA (US);
Assignee:
Massachusetts Institute of Technology, Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04Q / ; H03K / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
307465 ; 3074651 ; 307468 ; 3072021 ; 364716 ; 364784 ; 34082584 ; 34082586 ; 34082587 ; 34082591 ;
Abstract
A laser programmable integrated circuit chip has a plurality of logic modules organized as rows and columns. The modules and other chip components are connected by a grid-like array of conductors. The conductors are initially unattached. Customization occurs by fusing laser diffuseable links and severing cut points on the conductors. The modules have continuous conductor lines running through them. These conductor lines aid in testing and are useful in routing and error avoidance. The chip also contains test registers to test the array of logic modules, the input/output blocks, and the conductors.