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Safeguarded data transmission systems - test digits are transmitted with coded bit combinations and compared with test digits
Safeguarded data transmission systems - test digits are transmitted with coded bit combinations and compared with test digits
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机译：受保护的数据传输系统-测试数字以编码位组合传输，并与测试数字进行比较
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摘要
Test digits are transmitted together with the coded bit combinations, and compared at the receiving end with locally generated test digits. They are generated in a shift register with feed-back, consisting of a series of stages with a logic circuit at their inputs. Feed-back path is provided to logic circuits in certain register stages. Switching means select the certain register stages to be connected to the feedback circuit. A further logic circuit is allocated to each of the main logic circuits. Its output signal decides whether the respective register stage is to be connected to the feedback circuit, or not.
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