Timer with dynamic reset threshold

Details Timer with dynamic reset threshold Timer with dynamic reset threshold

1998-02-05

1999-09-14

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

327142, H03K 406, H03M 166

Patent

active

059529490

ABSTRACT:
A timing vernier repeatedly generates a timing output signal, which includes a timing event such as a state transition, pulse, etc. Unlike prior timing verniers, the present timing event is capable of significantly faster repetition rates. After the ramp signal is initiated responsive to a trigger signal, it changes from a predetermined starting level at a predetermined substantially linear rate. A digital-to-analog converter (DAC) provides an analog timing select signal and a reset select signal responsive to a digital timing select signal. The reset select signal represents the current timing select signal offset by a predetermined amount. A comparator, coupled to the ramp and the DAC, produces the timing event when the ramp output signal reaches the analog timing select signal. Thus, greater analog timing select signals cause earlier timing events, whereas lesser timing select signals result in later timing events. The delay of the timing event is directly proportional to the analog timing select signal. A threshold sensor, coupled to the ramp and the DAC, provides the ramp's reset signal when the ramp output signal reaches the reset select signal. Since the reset select signal is automatically adjusted to be a fixed offset from the analog timing select signal, the ramp is reset as early as possible, without waiting for the ramp output signal to finish its course.

REFERENCES:
patent: 3411153 (1968-11-01), Steele
patent: 4409494 (1983-10-01), Smith
patent: 4503396 (1985-03-01), Fawkes
patent: 4739192 (1988-04-01), Price, Jr.
patent: 4774497 (1988-09-01), Taylor
patent: 4779013 (1988-10-01), Tanaka
patent: 4885585 (1989-12-01), Barrow et al.
patent: 4950929 (1990-08-01), Yan
patent: 5231314 (1993-07-01), Andrews
patent: 5241221 (1993-08-01), Fletcher et al.
patent: 5329175 (1994-07-01), Peterson
patent: 5406215 (1995-04-01), Asahina
patent: 5483183 (1996-01-01), Li et al.
patent: 5502410 (1996-03-01), Dunn et al.
patent: 5514979 (1996-05-01), Collins et al.
patent: 5517143 (1996-05-01), Gross
patent: 5585795 (1996-12-01), Yuasa et al.
patent: 5617051 (1997-04-01), Bingham
patent: 5627486 (1997-05-01), Gross
patent: 5633637 (1997-05-01), Noro

Affiliated with

Also associated with

Rating

Timer with dynamic reset threshold does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1514104