Digital memory means with an accurate reference signal

Details Digital memory means with an accurate reference signal Digital memory means with an accurate reference signal

1983-04-07

1987-04-21

Moffitt, James W.

Static information storage and retrieval

Systems using particular element

Semiconductive

377 63, G11C 1134

Patent

active

046601767

ABSTRACT:
A digital memory comprises a charge coupled device (CCD) that includes a reference signal storage section. The digital input to the CCD includes an input reference signal and an information signal having a plurality of data levels, for example, a digital "0" and "1". The input reference signal includes a reference bit at the higher data level. The reference signal storage section divides the level of the reference bit to provide a reference level signal halfway between the two data levels. Thus, any shift in the data levels due, for example, to temperature changes in the CCD, affects the reference level signal to the same degree and the reference level can be kept exactly halfway between the data levels.

REFERENCES:
patent: 4007381 (1977-02-01), Mohsen
patent: 4143285 (1979-03-01), White
patent: 4322819 (1982-03-01), Hyatt

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