US 6,145,115 A · Device for duplicating functions and a method for duplicating functions

Abstract

An object of the present invention is to duplicate functions of a first device into a second device so as to have the same functions as the first device. CPU 23 supplies a predetermined input data to both the second device 19 and the first device 17. A plurality of logic data for generating output data correspond to specific input data are stored in the hard disk 26 as candidates. The CPU 23 selects a candidate which makes both the output data generated by the second device 19 and the first device 17 identical with each other for all the supplied input data within the candidates. The CPU 23 outputs a rewrite command to the second device 19 so as to execute logic data of the candidate thus selected. The output data of the second device 19 identical with the output data generated by the first device 17 can be obtained for all the supplied input data.

Claims19

Dependent claims

A device for duplicating functions of a first device into a second device having rewritable logic circuit, the first device outputting an output data correspond to a predetermined input data supplied thereto, the device for duplicating functions comprising:

an input data supply means for supplying the predetermined input data to the first device and the second device,
a storing means for storing a plurality of logic data as candidates for outputting an output data correspond to a specific input data, and
a rewriting means for outputting a rewrite command for rewriting logic of a circuit in the second device, a logic of a candidate being selected from the candidates stored in the storing means so as to make a trial output data generated by the second device being identical with a reference output data generated by the first device for all the supplied input data.

A method for duplicating functions of a first device into a second device having rewritable logic circuit, the first device outputting an output data correspond to a predetermined input data supplied thereto, the method comprising steps of:

step for storing a plurality of logic data as candidates for outputting an output data correspond to a specific input data,
step for supplying the predetermined input data to the first device and a second device,
step for outputting a rewrite command for rewriting logic of a circuit in the second device, the logic rewrited in the second device making a trial output data generated by the second device identical with a reference output data generated by the first device for all the supplied input data, the logic of the circuit being selected from the candidates.

Dependencies are inferred from the claim text.

Device for duplicating functions and a method for duplicating functions

Life of this patent

Device for duplicating functions and a method for duplicating functions

Life of this patent

Abstract

Claims19