Automatic frequency sweeping method for controlling a frequency

Details Automatic frequency sweeping method for controlling a frequency Automatic frequency sweeping method for controlling a frequency

1988-07-05

1990-02-20

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455164, 455183, 455260, H04B 116

Patent

active

049033280

ABSTRACT:
An automatic frequency sweeping method for controlling frequency synthesizing type autotuners for broadcasting receivers comprises a first intermediate frequency counting method in which the intermediate frequency is counted for a relatively short first time and the presence or absence of the received signal is judged in a first range having a relatively wide intermediate frequency width and a second intermediate frequency counting method in which the intermediate frequency is counted for a second time longer than the first time and the presence or absence of the received signal is judged in a second range having a intermediate frequency width narrower than that of the first range. Thus, a high speed frequency sweeping is ordinarily executed by using the first intermediate frequency counting method, and when the presence of the received signal is judged in the first intermediate frequency counting method, a more precise judgement is made in accordance with the second intermediate frequency counting method.

REFERENCES:
patent: 4207522 (1980-06-01), Thornton et al.
patent: 4476580 (1984-10-01), Tanaka et al.
patent: 4709406 (1987-11-01), Omoto

Affiliated with

Also associated with

Rating

Automatic frequency sweeping method for controlling a frequency does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic frequency sweeping method for controlling a frequency , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic frequency sweeping method for controlling a frequency will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1622889