Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1992-07-08
1994-01-04
Westin, Edward P.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307449, 307443, 365200, 36523006, G06F 1116, H03K 19007
Patent
active
052763609
ABSTRACT:
A redundant control circuit compares a defective address with an external address to determine whether a redundant word line is driven for a read-out operation instead of a defective word line assigned as a defective address, and keeps a redundant control signal on a precharged output signal line at an active high voltage level in the presence of the external address consistent with the defective address. A precharging unit not only charges the output signal line to the active high voltage level before arrival of the external address but also keeps the output signal line at the active high voltage level even if a current path is undesirably established from the output signal line to a discharge line in the presence of the external address consistent with the defective address, thereby preventing the defective word line from being undesirably accessed.
REFERENCES:
patent: 4228528 (1980-10-01), Cenker et al.
patent: 4614883 (1986-09-01), Sood et al.
patent: 4689494 (1987-08-01), Chen et al.
patent: 4714839 (1987-12-01), Chung
patent: 5058059 (1991-10-01), Matsuo et al.
patent: 5107464 (1992-04-01), Sahara et al.
NEC Corporation
Santamauro Jon
Westin Edward P.
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