Electrical pulse counters – pulse dividers – or shift registers: c – Systems – Using particular code or particular counting sequence
Patent
1994-06-09
1995-06-27
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Systems
Using particular code or particular counting sequence
377 45, 377 47, H03K 2116
Patent
active
054286549
ABSTRACT:
An apparatus for counting occurrences of a particular input during a plurality of succeeding periods. The apparatus comprises an input terminal for receiving the input, a toggle signal generating circuit for generating a periodic toggle signal to mark the plurality of periods, and a plurality of n counter cell circuits for effecting the counting in n bits. Each counter cell circuit generates at least a respective bit output, a respective toggle output, and respective carry output. The counter cell circuits are arranged in hierarchical order from a least-significant counter cell circuit to a most-significant counter cell circuit. Each of the respective counter cell circuits is coupled with the next-most-significant counter cell circuit and provides the respective toggle output to the next-most-significant counter cell circuit as a respective toggle input, provides the respective carry/output to the next most-significant counter cell circuit as the respective carry input, except the most-significant counter cell circuit n receives its respective toggle input from the respective carry output of the twice-less-significant counter cell circuit cell circuit n-2.
REFERENCES:
patent: 3349332 (1967-10-01), Bleickardt
patent: 4606059 (1986-08-01), Uida
patent: 4618849 (1986-10-01), Bruestle
patent: 4780894 (1988-10-01), Watkins et al.
patent: 5020082 (1991-05-01), Takeda
patent: 5062126 (1991-10-01), Radys
patent: 5097491 (1992-03-01), Hall
patent: 5164968 (1992-11-01), Otto
Advanced Micro Devices , Inc.
Heyman John S.
LandOfFree
Up/down counter apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Up/down counter apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Up/down counter apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-293066