Electrical pulse counters – pulse dividers – or shift registers: c – Particular transfer means – Including logic circuit
Patent
1990-10-15
1991-12-31
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Particular transfer means
Including logic circuit
377 48, 377108, H03K 2138
Patent
active
050777645
ABSTRACT:
A frequency dividing circuit divides an input signal of an input frequency into an output signal of an output frequency. The frequency dividing circuit comprises first through fourth latch circuits which operate the input signal, respectively. The first latch circuit delays an original signal into a first delay signal. The second latch circuit delays the first delay signal to produce a second delay signal and a first inverted delay signal which has an antiphase relative to the second delay signal. The third latch circuit delays the second delay signal into a third delay signal as the output signal. The fourth latch circuit receives a first OR signal which is produced by logically adding the third delay signal and mode signal which has first and second levels. The fourth latch signal delays the first OR signal into a fourth delay signal and produces a second inverted delay signal which has an antiphase relative to the fourth delay signal. The first latch circuit receives a second OR signal as the original signal which is produced by logically adding the first and the second inverted delay signals. The output frequency of the output signal has a first frequency when the mode signal has the first level and has a second frequency which is different from the first frequency when the mode signal has the second level.
REFERENCES:
patent: Re32605 (1988-02-01), Yamashita
patent: 3896387 (1975-07-01), Kokado
patent: 4394769 (1983-07-01), Lull
patent: 4573176 (1986-02-01), Yeager
patent: 4703495 (1987-10-01), Bereznak
Heyman John S.
Japan Radio Co. Ltd.
LandOfFree
Frequency dividing circuit capable of varying dividing ratio does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frequency dividing circuit capable of varying dividing ratio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency dividing circuit capable of varying dividing ratio will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1515526