Method of dynamic protection and its apparatus

Details Method of dynamic protection and its apparatus Method of dynamic protection and its apparatus

Filed on

1996-04-09

Date issued

1997-10-28

Examiner

Beausoliel, Jr., Robert W.

Other Related Categories

G06F 1100

Type

Patent

Status

active

Patent number

056824742

Description

ABSTRACT:
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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