Electronic digital logic circuitry – Three or more active levels – With conversion
Patent
1994-11-30
1995-11-28
Westin, Edward P.
Electronic digital logic circuitry
Three or more active levels
With conversion
H03K 1900, H03K 1902
Patent
active
054711568
ABSTRACT:
To provide a binary-multilevel OR gate, a binary-multilevel AND gate, a binary-multilevel EXCLUSIVE OR gate and their operational methods, which enable direct logic operations between multilevel logic values and binary logic values, including logic operations between binary numbers, the present invention comprises a switch for performing binary-multilevel OR gate operations, which select and output according to binary logic signal values only an input out of its both inputs of a multilevel logic signal and a maximum value of the multilevel logic signal; a switch for performing binary-multilevel AND gate operations, which select and output according to binary logic signals only an input out of its both inputs of multilevel logic signals and a minimum value of the multilevel logic signal; and a switch for performing binary-multilevel EXCLUSIVE OR gate operations, which select and output according to binary logic signals only an input out of its both inputs of a multilevel logic signal and the complementary value of the multilevel logic signal. Accordingly, the present invention has an advantage of enabling the construction of economical and simple circuits.
REFERENCES:
patent: 3628000 (1971-12-01), Weiss
patent: 4038564 (1977-07-01), Hakata
patent: 4408135 (1983-10-01), Yuyama et al.
patent: 4631428 (1986-12-01), Grimes
Kim Jin U.
Kim Sun Y.
Lee Jeom D.
Electronics and Telecommunications Research Institute
Roseen Richard
Westin Edward P.
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