Memory protection

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United States of America Patent

PATENT NO 9430409
APP PUB NO 20140006692A1
SERIAL NO

13924249

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An integrated-circuit device (1) comprises a processor (7), memory (13) for storing executable code, and memory protection logic (9). The memory protection logic (9) is configured to: determine the state of a read protection flag for a protected region of the memory (13); detect a memory read request by the processor (7); determine whether the read request is for an address in the protected region of the memory (13); determine whether the processor (7) issued the read request while executing code stored in the protected region of the memory (13); and deny read requests for addresses in the protected region if the read protection flag for the protected region is set, unless at least one of one or more access conditions is met, wherein one of the access conditions is that the processor (7) issued the read requests while executing code stored in the protected region.

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Patent Owner(s)

Patent OwnerAddress
NORDIC SEMICONDUCTOR ASAOTTO NIELSENS VEG 12 TRONDHEIM 7052

International Classification(s)

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  • 2013 Application Filing Year
  • G06F Class
  • 48303 Applications Filed
  • 43929 Patents Issued To-Date
  • 90.95 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20132014201520162017201820192020202120222023202420250255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Berntsen, Frank Heimdal, NO 9 61
Marvik, Ola Trondheim, NO 5 47

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Patent Citation Ranking

  • 7 Citation Count
  • G06F Class
  • 11.69 % this patent is cited more than
  • 9 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges3122144564193188710466053822701961379632401 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +010002000300040005000600070008000900010000110001200013000140001500016000

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