Patent US2023674A successfully refreshed from Google Patents.
Patent US3805031A successfully refreshed from Google Patents.
US3805031A
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Count and store synchronous binary counter
Assignee: United States Department of the Navy
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Filing: 1972-09-25
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Granted: 1974-04-16
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Expires: 1992-09-25
Abstract
Abstract An improvement in a count and store binary counter system wherein the count is available immediately after the reception of the counting clock pulse. Thus, there is no need to wait for a successive ripple-through, and the possibility of erroneous outputs due to an intermediate ripple-through state is eliminated. The circuitry employed to accomplish the invention includesq among other things, a ripple-through binary counter coupled to an n-bit parallel register.
Inventors
- 👤 L Leibowitz
- 👤 R Baldauf
- 👤 T Street
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:53
CPC Classifications
H; H03; H03K; H03K21/00; H03K21/08; H03K21/12; H03K23/00; H03K23/58
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
194 words
A system for counting and storing the number of pulses at an input comprising: a ripple through binary counter connected to said input to count the pulses received; said counter comprising an n-bit ripple through binary counter including a first plurality of flip-flops; storing means connected to said input and to said counter for storing the count in said counter each time a pulse is received; said storing means comprising an n-bit parallel register including a second plurality of flip-flops all connected directly to said input with the output of each of said first plurality of flip-flops connected to the input of one of said second plurality of flip-flops; reset means for introducing a reset pulse into said system, wherein; the reset terminals of all of said second plurality of flipflops and of all of said first plurality of flip-flops except the lowest digit flip-flop are connected to receive said reset pulse; and, the preset terminal of said lowest digit flip-flop is connected to receive said reset pulse, whereby said lowest digit flip-flop is set to logical 1 and all the other flip-flops are set to logical 0 upon receipt of a reset pulse.
Claim 2
Independent Claim
194 words
A system for counting and storing the number of pulses at an input comprising: a ripple through binary counter connected to said input to count the pulses received; said counter comprising an n-bit ripple through binary counter including a first plurality of flip-flops; storing means connected to said input and to said counter for storing the count in said counter each time a pulse is received; said storing means comprising an n-bit parallel register including a second plurality of flip-flops all connected directly to said input with the output of each of said first plurality of flip-flops connected to the input of one of said second plurality of flip-flops; reset means for introducing a reset pulse into said system, wherein; the reset terminals of all of said second plurality of flipflops and of all of said first plurality of flip-flops except the lowest digit flip-flop are connected to receive said reset pulse; and, the preset terminal of said lowest digit flip-flop is connected to receive said reset pulse, whereby said lowest digit flip-flop is set to logical 1 and all the other flip-flops are set to logical 0 upon receipt of a reset pulse.
Claim 3
Dependent Claim
19 words
The system as claimed in claim 1 wherein said first and second plurality of flip-flops are D type flip-flops.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |