Input circuit for a digital phase locked loop

Details Input circuit for a digital phase locked loop Input circuit for a digital phase locked loop

1988-01-14

1989-11-07

Harkcom, Gary V.

Boots, shoes, and leggings

36472401, G06F 1531

Patent

active

048796743

ABSTRACT:
For reliable and stable detection of the movement of a mobile body, a pair of filters for performing specified and different calculations are interposed between an analog-digital (A/D) converter and a digital phase locked circuit. The calculations carried out by the filters are selectively utilized either alone or in combination to minimize noise present after A/D conversion.

REFERENCES:
patent: 3979701 (1976-09-01), Tomozawa
patent: 4356558 (1982-10-01), Owen et al.
patent: 4531221 (1985-07-01), Chung et al.
patent: 4654811 (1987-03-01), Jakubzick

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