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:
Oct. 17, 1995
Filed:
Nov. 02, 1993
Kazutaka Nogami, Palo Alto, CA (US);
Takayasu Sakurai, Setagaya, JP;
Fumitoshi Hatori, Tachikawa, JP;
Kabushiki Kaisha Toshiba, Kanagawa, JP;
Abstract
A field programmable gate array, comprises: a plurality of circuit blocks each having logic circuits; at least one spare circuit block having logic circuits; a set of interconnections including at least one interconnection for connecting at least one of the circuit blocks and the at least one spare circuit programmably; and at least one connecting element disposed on the interconnection of the set of interconnections which turns its status from a turned-on state to a turned-off state or vice versa when programmed. When any one of the circuit blocks is defective, since the defective circuit block can be replaced with the spare circuit block, it is possible to retain any desired functions of the logic circuits by programming the connecting means, thus improving the production yield of the field programmable gate array and thereby reducing the manufacturing cost thereof.