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US3876869A
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Timing or counting system
Assignee: Sycon Corp
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Filing: 1973-10-31
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Granted: 1975-04-08
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Expires: 1993-10-31
Abstract
Abstract A timing or counting system of the purely electronic type which may be used with 50 or 60 Hz-voltages. As a timer, it is regulated by the cycles of the line. It can also time from 10 milliseconds to 11/2 hours. Manually settable digital switches are associated with the present circuit to enable selection of a predetermined decimal count or timing interval. The input line frequency (60 cycles) is doubled, then divided by a number of frequency dividing circuits. A clock pulse generator feeds clock pulses via Schmidt triggers and logic circuits to a read-only memory which controls the operation of the dividers. A special decoding circuit operates to convert to a decimal form the output of one of the dividers associated with the decimal switch for the least significant place.
Inventors
- 👤 Grover K Houpt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:53
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/64; H03K23/66
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
182 words
A timing or counting system comprising: a. a source of an AC signal having a predetermined frequency, b. a non-decimal modulus binary digital counting means to which said source frequency is applied, c. a series of binary digital counting means to which said non-decimal modulus counting means is coupled, d. a plurality of sets of switching means coupled to a voltage source and being settable to a plurality of conditions in which they produce a binary signal corresponding to selected decimal numbers, e. a plurality of variable conductive means respectively coupled to said sets of switching means, f. conversion means coupled to said non-decimal modulus counter and to the one of said sets of switching means associated with the counting of the least significant figure of a selected decimal number, said conversion means converting the output binary count of said nondecimal modulus counter to a binary number count having a decimal modulus, the others of said sets of switching means being coupled to the series of binary counting means which are associated with the more significant figures of said selected decimal number.
Claim 2
Dependent Claim
182 words
A timing or counting system comprising: a. a source of an AC signal having a predetermined frequency, b. a non-decimal modulus binary digital counting means to which said source frequency is applied, c. a series of binary digital counting means to which said non-decimal modulus counting means is coupled, d. a plurality of sets of switching means coupled to a voltage source and being settable to a plurality of conditions in which they produce a binary signal corresponding to selected decimal numbers, e. a plurality of variable conductive means respectively coupled to said sets of switching means, f. conversion means coupled to said non-decimal modulus counter and to the one of said sets of switching means associated with the counting of the least significant figure of a selected decimal number, said conversion means converting the output binary count of said nondecimal modulus counter to a binary number count having a decimal modulus, the others of said sets of switching means being coupled to the series of binary counting means which are associated with the more significant figures of said selected decimal number.
Claim 3
Dependent Claim
47 words
The system according to claim 1 wherein said (b) means includes a means for dividing the frequency of the signal by 12 and wherein said (c) means includes a divider by 60 and a predetermined number of dividers by 10, all of said dividers being serially connected.
Claim 4
Dependent Claim
176 words
A timing or counting system operable from an AC voltage source comprising: a. means for multiplying the frequency of said AC voltage, b. a non-decimal modulus binary digital counting means to which said frequency-multiplied AC voltage is applied, c. a series of binary digital counting means to which said first-mentioned counting means is coupled, d. a plurality of sets of switching means coupled to another voltage source and being settable to a plurality of conditions in which they produce binary signals corresponding to selected decimal numbers, e. a plurality of variable conductive means coupled to said sets of switching means, f. conversion means coupled to said non-decimal modulus counter and to the one of said sets of switching means associated with the counting of the least significant figure of a selected decimal number, said conversion means converting the output binary count of said non-decimal modulus counter to a binary number count having a decimal modulus, the others of said (d) means being coupled to the counters associated with the more significant figures of said selected number.
Claim 5
Dependent Claim
176 words
A timing or counting system operable from an AC voltage source comprising: a. means for multiplying the frequency of said AC voltage, b. a non-decimal modulus binary digital counting means to which said frequency-multiplied AC voltage is applied, c. a series of binary digital counting means to which said first-mentioned counting means is coupled, d. a plurality of sets of switching means coupled to another voltage source and being settable to a plurality of conditions in which they produce binary signals corresponding to selected decimal numbers, e. a plurality of variable conductive means coupled to said sets of switching means, f. conversion means coupled to said non-decimal modulus counter and to the one of said sets of switching means associated with the counting of the least significant figure of a selected decimal number, said conversion means converting the output binary count of said non-decimal modulus counter to a binary number count having a decimal modulus, the others of said (d) means being coupled to the counters associated with the more significant figures of said selected number.
Claim 6
Dependent Claim
52 words
The system according to claim 3 wherein said conversion means is coupled to said one of said sets of switching means through the variable conductive means associated therewith and wherein the others of said switching means are coupled to their respective associated counters through corresponding associated ones of said variable conductive means.
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |