Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1997-05-21
2000-03-21
Urban, Edward F.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
4551851, 36518905, H04Q 720
Patent
active
060412216
ABSTRACT:
A memory circuit (24) limits the threshold voltage distribution for either programming or erasing a memory cell (40A) in a non-volatile memory array (34). A data latch (90) provides a current (I.sub.REF) to the memory cell (40A) that increases in current as the operating temperature of the memory cells (40A, 40B) increases. Current generated by the data latch (90) increases when the processing parameters cause a greater conductivity of the transistors in the memory cell (40A) and the current decreases when the processing parameters cause a lesser conductivity of the transistors in the memory cell (40A), thus allowing narrower limits on the distribution of the program and erase threshold voltages.
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patent: 5748538 (1998-05-01), Lee et al.
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patent: 5819305 (1998-10-01), Nixon
Caravella James S.
Mietus David F.
Moore Jeremy W.
Gesesse Tilahun
Motorola Inc.
Parker Lanny L.
Urban Edward F.
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