Cryptography – Key management – Having particular key generator
Patent
1995-05-30
1998-09-01
Lall, Parshotam S.
Cryptography
Key management
Having particular key generator
380 23, G06F 1214
Patent
active
058023429
ABSTRACT:
An external memory controller for an image creating device comprises an image creation control section 105 for creating an image data in accordance with an image creation program on the basis of signals supplied from a tablet 101 and a switch 102. The created image data is displayed on the monitor 109. An internal memory section 106 stores the created image data together with its attribute information. An external memory medium 107, storing its own image creation program 701 together with its attribute information 702, is detachably connected to the main body 100 of the apparatus. A memory control unit 104 stores an image data together with the attribute information 702, when created in accordance with the program 701 applied from the external memory medium 107, into the internal memory section 106. The data transfer section 110 controls transmission of image data 703 and its attribute information 704 between the external memory medium 107 and the internal memory section 106. This transmission of image data 703 is prohibited unless the currently running program has the same attribute information as the attribute information of the image data stored in the external memory medium 107 or in the internal memory section 106.
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Izumida Toshitaka
Kaneko Takuji
Kawamoto Norio
Ohmichi Takako
Okazaki Hiromichi
Coulter Kenneth R.
Konami Co. Ltd.
Lall Parshotam S.
LandOfFree
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