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    • 3. 发明授权
    • Electronic arithmetic unit with multiple error detection
    • 具有多重错误检测功能的电子运算单元
    • US5629945A
    • 1997-05-13
    • US389707
    • 1995-02-14
    • Peter SulzbergerEberhard Boehl
    • Peter SulzbergerEberhard Boehl
    • G06F7/38G06F11/10G01R31/28G06F11/00
    • G06F11/104
    • An electronic arithmetic unit, such as an ALU, a processor, a controller, or the like, is for the arithmetic gating (combining) of digital operands coded by code bits and supplied via at least one data bus to form data words likewise coded by code bits. The arithmetic gating of the bits of the operands takes place in stages, and in each stage, at least one carry bit is generated. A code-generating unit generates the code bits of the result word from the coded operands while taking into consideration the required operation of the code bits. An additional circuit for duplicated carry generation is assigned to the individual stages. In addition, a testing device is provided for checking the duplicated carry bits for identity. Finally, for each operand, a code checker is provided, which is linked to the individual lines of the at least one data bus via connecting lines, the arithmetic unit and the circuit for duplicated carry generation being connected up between the code checker and the data bus to the connecting lines. In this manner, in addition to faulty operand bits and carry bits, interrupt errors on operand-bit lines can also be detected.
    • 诸如ALU,处理器,控制器等的电子运算单元用于由码位编码的数字操作数的算术(组合),并经由至少一个数据总线提供,以形成同样由 代码位。 操作数的位的算术门控分阶段进行,并且在每个阶段中,产生至少一个进位位。 代码生成单元在考虑了代码位的所需操作的同时,从编码操作数生成结果字的代码位。 用于重复进位生成的附加电路被分配给各个级。 此外,提供了用于检查用于身份的重复进位位的测试装置。 最后,对于每个操作数,提供代码检查器,其通过连接线链接到至少一个数据总线的各行,运算单元和用于重复进位生成的电路连接在代码检查器和数据之间 总线到连接线。 以这种方式,除了操作数位和进位位错误之外,还可以检测到操作数位线上的中断错误。