Programmable frequency divider

Details Programmable frequency divider Programmable frequency divider

1990-02-21

1991-11-12

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

With programmable counter

377110, 377111, H03K 2138

Patent

active

050654152

ABSTRACT:
A programmable frequency divider for dividing the frequency of a supplied high-frequency signal directly into a lower frequency includes a plurality of 2-scale-factor prescalers or programmable frequency divider units each capable of being switched between divide-by-2 and divide-by-3 modes. The 2-scale-factor prescalers are connected in cascade for producing an output signal which is frequency-divided at one of multiple division ratios at a time.

REFERENCES:
patent: Re32605 (1988-02-01), Yamashita et al.
patent: 3202837 (1965-08-01), Baracket
patent: 4053739 (1977-10-01), Miller et al.
patent: 4184068 (1980-01-01), Washburn
patent: 4394769 (1983-07-01), Lull
patent: 4715052 (1987-12-01), Stambaugh
PLL, Thomas Schreiner, pp. 82-85, ELO, 1979.

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