Electrical pulse counters – pulse dividers – or shift registers: c – Systems – Comparing counts
Patent
1990-02-16
1991-07-16
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Systems
Comparing counts
377 26, 377 43, 328 55, 307603, H03K 5135, H03K 2100
Patent
active
050330667
ABSTRACT:
A time delay circuit for providing a delayed replica of a digital input signal including first and second counters for providing first and second count outputs offset relative to each other by a predetermined value indicative of a predetermined delay, and further including a first-in first-out (FIFO) memory for controllably storing selected values of the digital input signal together with corresponding first count output values. First comparison circuitry compares each digital input with the immediately prior digital input, and controls the FIFO memory to store (a) each digital input which is different from the immediately prior digital input, and (b) the first counter output value associated therewith. The FIFO memory circuit provides an output comprising (1) a digital output that corresponds to the earliest changed digital output which has not yet been utilized in the delayed replica of the digital input signal, and (2) a FIFO count output that corresponds to the first counter output value associated with such digital output. Second comparison circuitry responsive to the second counter output and the FIFO count output controls the FIFO memory circuit to change its output when the second counter output and the FIFO count output are equal.
REFERENCES:
patent: 3833854 (1974-09-01), Schonover
patent: 4290022 (1981-09-01), Puckette
patent: 4468796 (1984-08-01), Suga
patent: 4517684 (1985-05-01), Fennel
patent: 4809221 (1989-02-01), Magliocco et al.
patent: 4870665 (1989-09-01), Vaughn
Denson-Low Wanda K.
Heyman John S.
Hughes Aircraft Company
Sales Michael W.
LandOfFree
Event tagging time delay does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Event tagging time delay, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Event tagging time delay will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-137724