Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1991-02-28
1992-10-20
Laroche, Eugene R.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
3072961, 3072965, 307350, H03K 1730, H03K 1722
Patent
active
051572877
ABSTRACT:
A semiconductor circuit device which has a first stage logic circuit for receiving an external input signal and a plurality of inverters for forwarding an output signal from said first stage logic circuit to a succeeding stage and which is to become active when an activating signal is active. The device includes a threshold value correcting circuit formed by a threshold value correcting inverter and a switching circuit. The switching circuit connects an output terminal of the threshold value correcting inverter to an output terminal of the first stage logic circuit only during the period in which the activating signal is in its active state. By having the threshold value correcting circuit operate synchronously with the activating signal, the input threshold level of the first stage logic circuit is corrected in accordance with the external input signal level in case there is a change in the power supply potential and the ground potential GND within the semiconductor chip and this ensures the proper operation of the first stage circuit.
REFERENCES:
patent: 4785262 (1988-11-01), Ryu et al.
patent: 4818904 (1989-04-01), Kobayashi
LaRoche Eugene R.
NEC Corporation
Yoo Do Hyun
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