Data processing device and data processing method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8839359
APP PUB NO 20120008770A1
SERIAL NO

13235905

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Abstract

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A data encryption device is connected between an HDD and an HDD controller that controls the HDD. The data encryption device encrypts data that is stored from the HDD controller to the HDD, and decrypts data that is read from the HDD. A CPU of the data encryption device receives a command issued from the HDD controller to the HDD, and determines whether the command is executable at the HDD. When it is determined that the command is executable, the command is issued to the HDD. On the other hand, when it is determined that the command is unexecutable, the CPU prohibits issuance of the command to the HDD. Furthermore, when a command issued to the HDD is a specific command, the CPU bypasses data transferred between the HDD controller and the HDD without encryption or decryption.

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First Claim

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ito, Akio Yokohama, JP 164 1276
Tagashira, Nobuhiro Nagareyama, JP 34 128

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