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:
Feb. 07, 1995
Filed:
Oct. 06, 1992
Applicant:
Inventor:
Kenneth Austin, Northwich, GB;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
380-4 ; 380 21 ; 380 46 ; 380 49 ; 380 50 ;
Abstract
A programmable logic device comprises a semiconductor with configurable circuitry, an input circuit for encrypted data to determine the configuration of the circuitry, decrypting circuitry responsive to a key value held in a non-volatile data store, and volatile storage circuitry for holding decrypted configuration data. Encrypting circuitry uses the same key value to encrypt configuration data and stores the encrypted configuration data for use in the programmable logic device.
Austin, Kenneth. (1995). Data security arrangements for semiconductor programmable devices (U.S. Patent No. 5388157). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5388157
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