Digital data change-of-state detector

Details Digital data change-of-state detector Digital data change-of-state detector

1977-08-30

1979-05-15

Morrison, Malcolm A.

Communications: electrical

Digital comparator systems

G06F 704

Patent

active

041550714

ABSTRACT:
This invention relates to electronic circuits that detect changes in digital data that occur on a parallel data bus. The data on the parallel input bus is fed to a memory register. In addition, each data bus is tied to a comparison circuit which compares the input data with the output data on the same bus. If the data is not identical, the comparison circuit changes state to provide a signal which may be used for updating the data.

REFERENCES:
patent: 3119987 (1964-01-01), Slavin
patent: 3147343 (1964-09-01), Meyer et al.
patent: 3757306 (1973-09-01), Boone
patent: 3778775 (1973-12-01), Haring et al.
patent: 3781792 (1973-12-01), Birkin
patent: 3789204 (1974-01-01), Barlow
patent: 3794981 (1974-02-01), O'Connor
patent: 3863215 (1975-01-01), McGrogan, Jr.
patent: 3931612 (1976-01-01), Stevens et al.
patent: 3967246 (1976-06-01), House

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