Distance measuring device

Details Distance measuring device Distance measuring device

2007-08-28

2007-08-28

Punnoose, Roy M. (Department: 2886)

Optics: measuring and testing

Position or displacement

C356S003000

Reexamination Certificate

active

10516584

ABSTRACT:
A distance measuring device has at least one oscillator (26) which produces a basic signal at a fundamental frequency (f0) and a first circuit device (30) which produces a first signal at a first frequency (f1) which is higher than the fundamental frequency (f0). The first circuit device (30) has at least one PLL circuit (32) and one VCO circuit (34).

REFERENCES:
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patent: 6072427 (2000-06-01), McEvann
patent: 6104250 (2000-08-01), Eckersten et al.
patent: 6384770 (2002-05-01), de Gouy et al.
patent: 6486826 (2002-11-01), Cramer et al.
patent: 198 11 550 (1999-09-01), None
patent: 198 13 604 (1999-09-01), None
patent: 2 336 493 (1999-10-01), None

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