Phase jitter detector

Details Phase jitter detector Phase jitter detector

1981-02-02

1983-10-25

Gruber, Felix D.

Boots, shoes, and leggings

179 84VF, 324 78Z, 364574, 375118, 375120, G01R 2312, H04M 126, H04M 100

Patent

active

044122993

ABSTRACT:
A phase jitter detector that is ideally suited for use in combination with tone receivers (e.g., tone-to-pulse converters) to provide a speech immune tone detection system or in a measuring instrument to provide a direct measurement of the signal-to-noise ratio (SNR) of a signal is disclosed. In either application, the phase jitter detector can be implemented in either phase locked loop or digital logic form. Regardless of how implemented, the phase jitter detector determines the phase jitter of an incoming signal by first squaring the signal (by passing the incoming signal through a high gain amplifier that limits the signal, for example). After squaring, the phase jitter of the squared signal is determined by: (1) determining the phase deviation of each cycle of the squared signal with respect to the average frequency of the squared signal over a predetermined number of cycles; and (2) combining the phase deviation and the predetermined number of cycles information to determine phase jitter. In tone detection system applications, the phase jitter information is used to control whether or not a tone receiver is to complete a tone conversiono sequence. In SNR measuring applications, the phase jitter information is converted into SNR form and displayed.

REFERENCES:
patent: 3278685 (1966-10-01), Harper
patent: 3537001 (1970-10-01), Friend
patent: 3699949 (1972-10-01), O'Hanlon, Jr. et al.
patent: 3902123 (1975-08-01), Oomen
patent: 3944753 (1976-03-01), Procter et al.
patent: 4016370 (1977-04-01), Lauteppitaks et al.
patent: 4016371 (1977-04-01), Hammad
patent: 4021623 (1977-05-01), Sharp
patent: 4045620 (1977-08-01), Westbrook
patent: 4063031 (1977-12-01), Grunza
patent: 4112383 (1978-09-01), Burgert
patent: 4122391 (1978-10-01), Harp et al.
patent: 4123704 (1978-10-01), Johnson
patent: 4137496 (1979-01-01), Lind
patent: 4142177 (1979-02-01), Davis
patent: 4145576 (1979-03-01), Twiss
patent: 4151485 (1979-04-01), La Fratta
patent: 4236110 (1980-11-01), Shearer et al.
patent: 4270183 (1981-05-01), Robinson et al.
patent: 4320515 (1982-03-01), Burton, Jr.
patent: 4339823 (1982-07-01), Predina et al.

Affiliated with

Also associated with

Rating

Phase jitter detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase jitter detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase jitter detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-715632