Communications: electrical – Digital comparator systems
Patent
1976-05-12
1977-08-23
Fears, Terrell W.
Communications: electrical
Digital comparator systems
340173CA, G11C 1140, G11C 706
Patent
active
040443442
ABSTRACT:
In a MIS dynamic memory, information is written in the memory cell at a predetermined address, the access to other plural addresses is made for a fixed time period under such a condition that the memory cell of the predetermined address is not refreshed, and the stored information is thereafter read out of the memory cell of the predetermined address. The level of the read information is compared with a predetermined threshold value, thereby determining the information hold time of the memory cell.
REFERENCES:
patent: 3851316 (1974-11-01), Kodama
patent: 4004284 (1977-01-01), Heeren
Asano Yoichi
Suzumura Yoshikazu
Wada Hidetsugu
Fears Terrell W.
Hitachi , Ltd.
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