Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1986-01-22
1989-03-21
Heyman, John S.
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
307360, 307364, 307270, 307571, 307473, H03K 522, H03K 5153, H03K 301, H03K 17687
Patent
active
048146447
ABSTRACT:
Disclosed are basic circuits operable in a current mode in multivalued logic circuit systems, analog circuit systems and the like. Examples of the basic circuits are a successor, quantizer, adder, substracter, divider, multiplier, decoder, literal circuit, equivalence circuit, bilateral T-gate, complement literal circuit and h operator circuit. These basic circuits are realized by using floating threshold switching circuits, floating window switching circuits, threshold SPDT switching circuits, and the like.
REFERENCES:
patent: 4204131 (1980-05-01), Dozier
patent: 4249095 (1981-02-01), Hsu
patent: 4682061 (1987-07-01), Donovan
patent: 4694418 (1987-09-01), Ueno et al.
T. Higuchi and M. Kameyama "Static-Hazard-Free T-Gate for Ternary Memory Element and Its Application to Ternary Counters," IEEE Transactions on Computers, vol. C-26, No. 12, pp. 1212-1221 (Dec., 1971), as stated in the specification at p. 59.
S. L. Hurst "Multiple-Valued Logic--Its Status and Its Future", IEEE Transactions on Computers, vol. C-33, No. 12, pp. 1160-1179 (Dec. 1984), which is just an exponent of multiple-valued logic.
T. Tich Dao "Threshold I.sup.2 L and Its Application to Binary Symmetric Functions and Multivalued Logic", IEEE Journal of Solid-State Circuits, vol. SC-12, No. 5, pp. 463-472 (Oct., 1977), as stated.
T. Tich Dao, Edward J. McCluskey and Lewis K. Russell "Multivalued Integrated Injection Logic", IEEE Transactions on Computers, vol. C-26, No. 12, pp. 1233-1241 (Dec., 1977), as stated in the specification at p. 3.
G. Epstein, G. Frieder and D. C. Rine "The Development of Multiple-Value Logic as Related to Computer Science", Computer, vol. 7, pgs. 20-32, Sep., 1974, which is just an exponent of multiple-valued logic.
A. G. Vranesic and K. C. Smith "Engineering Aspects of Multi-Valued Logic Sytems", Computer, vol. 7, pp. 34-41, Sep., 1974, which is just an exponent of multi-valued logic systems.
G. Abraham, "Variable Radix Multistable Integrated Circuits", Computer, vol. 7, pp. 42-59, Sep. 1974, which is just an exponent of multi-valued logic circuit.
Heyman John S.
K. Ushiku & Co.
Phan Trong Quang
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