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:
Nov. 03, 2009
Filed:
Jul. 22, 2005
Masahiro Tonami, Kawasaki, JP;
Kozaburo Nakamura, Osaka, JP;
Atsushi Kondo, Osaka, JP;
Shigeaki Funaki, Osaka, JP;
Koji Yasuda, Osaka, JP;
Masahiro Tonami, Kawasaki, JP;
Kozaburo Nakamura, Osaka, JP;
Atsushi Kondo, Osaka, JP;
Shigeaki Funaki, Osaka, JP;
Koji Yasuda, Osaka, JP;
NEC Electronics Corporation, Kanagawa, JP;
Mikasa Shoji Co., Ltd., Osaka, JP;
Abstract
The present invention relates to a programmable-gate-array copy protection method and a system which prevent unauthorized copying of an FPGA program. A copy protection method for a field-programmable gate array, the method comprising a step of causing a user-specific gate array to boot a user circuit data to the field-programmable gate array, the user-specific gate array being connected to the field-programmable gate array and a memory device in which the user circuit data is stored and being pre-programmed at a semiconductor-vender's factory.