Method and apparatus for improving wideband detection of a tone

Details Method and apparatus for improving wideband detection of a tone Method and apparatus for improving wideband detection of a tone

1992-04-06

1993-03-30

Mai, Tan V.

Boots, shoes, and leggings

G06F 1531

Patent

active

051989921

ABSTRACT:
An in-phase signal is sampled at an input of a first analog-to-digital converter (41), and a quadrature signal is sampled at an input of a second analog-to-digital converter (42). The output of the first analog-to-digital converter (41) is delayed by an amount equal to one, plus an integer number times four, sample periods to provide a delayed in-pahse signal. Then the delayed in-phase signal is added to the quadrature signal to provide a sum signal. Then a tone is detected in the sum signal. In one embodiment, a data processor (32) stores the output of the analog-to-digital converters (41, 42) in memory (34) and processes the data as programmed by microcode (33).

REFERENCES:
patent: 4038540 (1977-07-01), Roberts
patent: 4164036 (1979-08-01), Wax
patent: 4351032 (1982-09-01), Challen
patent: 4989167 (1991-01-01), McCaslin et al.

Affiliated with

Also associated with

Rating

Method and apparatus for improving wideband detection of a tone does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for improving wideband detection of a tone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for improving wideband detection of a tone will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1286253