发明名称 |
Method of dynamic protection and its apparatus |
摘要 |
A dynamic protecting method and its apparatus protect the data transferred on bus. The dynamic protecting apparatus consists of a number generating device to generate a sequence of number signals and a decoder on the bus. The decoder will receive and decode data from the bus with the number signals generated by number generating device to generate a decoded program data and output it to the bus. The dynamic protecting method comprises of the following steps: A number generating device is set to generate an initial value of number signals by accessing program data through the bus. The number generating device will generate a sequence of number signals in accessing the program data according to the initial value. Inputting the data and the above mentioned number signals in sequence into a decoder, a decoded data is generated and sent to the bus.
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申请公布号 |
US5682474(A) |
申请公布日期 |
1997.10.28 |
申请号 |
US19960631671 |
申请日期 |
1996.04.09 |
申请人 |
UNITED MICROELECTRONICS CORP. |
发明人 |
HSU, JERRY |
分类号 |
A63F13/00;G06F21/00;(IPC1-7):G06F11/00 |
主分类号 |
A63F13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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