Low-power random digit generator

Details Low-power random digit generator Low-power random digit generator

1995-05-02

1998-07-21

Horabik, Michael

Communications: electrical

Continuously variable indicating

With meter reading

370455, 370461, 370462, 370463, 370442, 370444, 370431, H04Q 700

Patent

active

057840024

ABSTRACT:
A low-power random digit generator for use with existing circuitry samples a changing physical variable. In a communications device, the random digit generator has an A/D converter that repetitively converts a received analog signal at a conversion rate, where a magnitude of the received analog signal changes at a received rate. At least one bit from the conversion is selected, and a random digital signal having a magnitude corresponding to the at least one bit is generated. The communications device preferably taps off an existing A/D converter and uses combinational circuitry to minimize power consumption.

REFERENCES:
patent: 4063220 (1977-12-01), Metcalfe et al.
patent: 4539518 (1985-09-01), Kitayoshi
patent: 4608559 (1986-08-01), Friedman et al.
patent: 4688213 (1987-08-01), Raychaudhuri
patent: 5491741 (1996-02-01), Farwell et al.

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