Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1988-11-02
1990-06-05
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
3072964, 307572, 307548, H03K 1716, H03K 17687
Patent
active
049316672
ABSTRACT:
Data are frequently transmitted via a dual bus line by means of differential signals which are evaluated by a differential amplifier, particularly for reasons of protection against interference. However, such a differential amplifier only has a limited input voltage range, or a dead voltage range of the input signals within which it is not capable of operating. To prevent the voltages on both bus lines from getting into this dead voltage range, either due to a common-mode interference signal on the bus lines or due to a voltage dip in the feed voltage of the differential amplifier, the two bus lines are connected in accordance with the invention to an adjusting circuit which changes the voltages of both bus lines by the same amount in the direction out of the dead voltage range. This prevents unspecified conditions of the differential amplifier without significantly influencing the differential signal on the two bus lines. The application for an integrated memory is described.
REFERENCES:
patent: 4375039 (1983-02-01), Yamauchi
patent: 4504748 (1985-03-01), Oritani
patent: 4583203 (1986-04-01), Monk
patent: 4621202 (1986-11-01), Pumo
patent: 4647797 (1987-03-01), Sanwo et al.
patent: 4686396 (1987-08-01), Law et al.
patent: 4757215 (1988-07-01), Seo
patent: 4766334 (1988-08-01), Warner
Davies Thomas J.
O'Connell Cormac M.
Ontrop Hans
Pfennings Leonardus C. M. G.
Phelan Cathal G.
Marion Michael E.
Miller Stanley D.
Roseen Richard
U.S. Philips Corporation
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