Memory interface system

Electronic digital logic circuitry – Interface – Current driving

Reexamination Certificate

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Details

C326S082000, C326S105000, C326S090000

Reexamination Certificate

active

07030655

ABSTRACT:
The invention relates to a semiconductor memory device and, more particularly, to an interface system for a semiconductor memory device. The interface includes a transmitter capable of encoding first and second input signals as a plural-bit symbol signal responsive to first and second clocks, respectively, the first clock being out of phase from the second clock. And the interface includes a receiver capable of generating first and second output signals by decoding the symbol signal responsive to third and fourth clocks, respectively. Other embodiments are illustrated and described.

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Von F. Kuhne, “Modulation and Demodulation Von QAM-Signalen in Digital-Richtfunksystemen”, Modulation and demodulation of QAM-Signals in Digital Radio Systems, Frequenz, Schiele und Schon Gmbh. Berlin De, vol. 37, No. 5, May 1983, XP-000763711, pp. 117-122.

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