Self-correcting frequency dividers

Details Self-correcting frequency dividers Self-correcting frequency dividers

1986-11-25

1987-09-01

Heyman, John S.

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

Systems

Pulse multiplication or division

377 28, 328 15, H03K 2100, H03K 2340

Patent

active

046913319

ABSTRACT:
A frequency divider for converting an n-bit periodic counting stream (each period containing a single zero or one bit, respectively, followed by n-1 one or zero bits) into a 2n-bit counting stream includes a two-input NOR gate or NAND gate, respectively, connected for delivering its output to an n-bit delay device, the NOR or NAND gate further connected for receiving the output of the delay device as feedback at one of its two-input terminals and for receiving the n-bit counting stream at the other of its two-input terminals. The output of the delay device is then a 2n-bit counting stream.

REFERENCES:
patent: 3601636 (1971-08-01), Marsh, Jr.
patent: 3609391 (1971-09-01), Hatano et al.
patent: 3930169 (1975-12-01), Kuhn, Jr.
patent: 3992635 (1976-11-01), Suzuki et al.
patent: 4103251 (1978-07-01), Glick
patent: 4134073 (1979-01-01), MacGregor
patent: 4216391 (1980-08-01), Gehrig et al.
patent: 4241418 (1980-12-01), Stanley
patent: 4423383 (1983-12-01), Svendsen
patent: 4606059 (1986-08-01), Oida
"AT&T Announces Highest Capacity Lightwave System", AT&T News Release, 1984, pp. 1-4.

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