METHOD OF INSTALLING SECRET KEY

PROBLEM TO BE SOLVED: To provide an LSI (large-scale integrated circuit) that allows easy installation of a variety of IDs (identifications). SOLUTION: In an LSI 10, a decode section 11 decodes an externally received ID signal Fusedec to provide as output a decode signal. A fuse circuit 12 stores th...

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Main Authors FUJIWARA MUTSUMI, MOTOHARA AKIRA
Format Patent
LanguageEnglish
Published 20.01.2005
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
PHYSICS
SEMICONDUCTOR DEVICES
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Abstract PROBLEM TO BE SOLVED: To provide an LSI (large-scale integrated circuit) that allows easy installation of a variety of IDs (identifications). SOLUTION: In an LSI 10, a decode section 11 decodes an externally received ID signal Fusedec to provide as output a decode signal. A fuse circuit 12 stores the values the decode signals represent when an operation setting signal Fuse is active, and holds the stored values when the operation setting signal Fuse is nonactive. An IDRAM (ID random access memory) 13 stores the value held by the fuse circuit 12 as an ID. Thus, simple changes in the values of the ID signals Fusedec enable installing the IDs of a variety of the values in the LSI 10. COPYRIGHT: (C)2005,JPO&NCIPI
AbstractList PROBLEM TO BE SOLVED: To provide an LSI (large-scale integrated circuit) that allows easy installation of a variety of IDs (identifications). SOLUTION: In an LSI 10, a decode section 11 decodes an externally received ID signal Fusedec to provide as output a decode signal. A fuse circuit 12 stores the values the decode signals represent when an operation setting signal Fuse is active, and holds the stored values when the operation setting signal Fuse is nonactive. An IDRAM (ID random access memory) 13 stores the value held by the fuse circuit 12 as an ID. Thus, simple changes in the values of the ID signals Fusedec enable installing the IDs of a variety of the values in the LSI 10. COPYRIGHT: (C)2005,JPO&NCIPI
Author MOTOHARA AKIRA
FUJIWARA MUTSUMI
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Snippet PROBLEM TO BE SOLVED: To provide an LSI (large-scale integrated circuit) that allows easy installation of a variety of IDs (identifications). SOLUTION: In an...
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SubjectTerms BASIC ELECTRIC ELEMENTS
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
PHYSICS
SEMICONDUCTOR DEVICES
Title METHOD OF INSTALLING SECRET KEY
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