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US3691353A
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Multimode counting device
Assignee: Warner and Swasey Co
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Filing: 1970-12-14
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Granted: 1972-09-12
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Expires: 1990-12-14
Abstract
Abstract A multimode counting device that utilizes number incrementing and number decrementing signals to change the value of a stored number. The counting device includes a storage register and switching or gating circuitry that causes the device to switch between a first mode of operation for altering a stored number having a positive polarity and a second mode of operation for altering a stored number having a negative polarity. The device also includes additional gating circuitry responsive to the stored number and to signals in transmission to the storage register to initiate a change in the operating mode when the stored number is unity and a signal that will cause that number to become zero is in transmission to that register instead of waiting until the stored number actually reaches zero.
Inventors
- 👤 Jimmie A Michaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:58
CPC Classifications
H; H03; H03K; H03K21/00; H03K23/00; H03K23/40; H03K23/50; H03K23/56
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
226 words
In a multimode counting and number storing system utilizing number changing signals to change the value of a stored number, said system including: number storing means, said number storing means providing magnitude signals indicating the magnitude of the stored number; means for transmitting number changing signals to said number storing means; means for generating a count direction signal that indicates whether a number changing signal in transmission to said number storing means will cause the magnitude of said stored number to be incremented or decremented; mode determining means for switching the mode of operation of said system between a first mode for altering a positive polarity number, and a second mode for altering a negative polarity number, the improvement comprising: enabling means responsive to said count direction signal and said magnitude signal for providing an output signal that enables said mode determining means to switch the operating mode of said system upon the receipt of signals indicating that said stored number has a magnitude of unity and that a signal that will cause said stored number to have a value of zero is in transmission to said number storing means, a change in the operating mode thereby being initiated at a time when it is determined that said stored number will have a value of zero, and before the stored number actually obtains said zero value.
Claim 2
Dependent Claim
226 words
In a multimode counting and number storing system utilizing number changing signals to change the value of a stored number, said system including: number storing means, said number storing means providing magnitude signals indicating the magnitude of the stored number; means for transmitting number changing signals to said number storing means; means for generating a count direction signal that indicates whether a number changing signal in transmission to said number storing means will cause the magnitude of said stored number to be incremented or decremented; mode determining means for switching the mode of operation of said system between a first mode for altering a positive polarity number, and a second mode for altering a negative polarity number, the improvement comprising: enabling means responsive to said count direction signal and said magnitude signal for providing an output signal that enables said mode determining means to switch the operating mode of said system upon the receipt of signals indicating that said stored number has a magnitude of unity and that a signal that will cause said stored number to have a value of zero is in transmission to said number storing means, a change in the operating mode thereby being initiated at a time when it is determined that said stored number will have a value of zero, and before the stored number actually obtains said zero value.
Claim 3
Dependent Claim
67 words
The multimode system set forth in claim 1 in which said enabling means comprises gating means for transmitting said enabling output signal to said mode determining means upon the receipt of signals by said enabling means indicating that the magnitude of said stored number will be decremented by a signal in transmission to said number storing means and that the magnitude of said stored number is unity.
Claim 4
Dependent Claim
124 words
The multimode system set forth in claim 1 in which: said means for generating count direction signals provides a direction signal for each number changing signal in transmission to said number storing means; and in which said enabling means includes: gating means connected to receive said count direction signals, and said number changing signals; and means for delaying the transmission of at least one of said signals to said gating means so that each number changing signal and its associated direction signal will arrive at said gating means at substantially the same time to permit only a signal that will cause the stored number to have a zero value to cause said enabling means to transmit an enabling signal to said mode determining means.
Claim 5
Dependent Claim
79 words
The multimode system set forth in claim 3 in which: said enabling gating means also receives said magnitude signals; and said delay means delays the transmission of signals to said gating means so that a signal indicating the magnitude of said stored number to be unity, and the number changing signal that will change the stored number from unity both arrive at said gating means at substantIally the same time to prevent an erroneous transmission of an enabling signal.
Claim 6
Dependent Claim
165 words
The multimode counting and number storage device set forth in claim 1 in which: said mode determining means receives number changing signals from said transmitting means and enabling signals from said enabling means, and provides an output that causes the said system to operate when enabled by an enabling signal that is in accordance with a received number changing signal; said enabling means includes gating means connected to receive signals from said transmitting means at a position downstream from the position at which said mode determining means receives signals from said transmitting means; and said enabling gating means transmits an enabling signal only when no signal is received from said downstream position, said enabling means thereby preventing said mode determining means from responding to any number changing signal that will cause said stored number to have a zero value and causing said system to operate in a mode determined by said zero causing signal instead by the number changing signal following said zero causing signal.
Claim 7
Independent Claim
227 words
A method of determining the proper counting mode for changing a stored number of a particular polarity in response to number changing signals comprising the steps of: transmitting number changing signals in a sequence to a number storing means constructed to change the value of the stored number in response to said received number changing signals; generating signals indicating the magnitude of the stored number; generating a count direction signal for each number changing signal in transmission to the said storing means that indicates whether the number changing signal will cause the magnitude of the stored number to be incremented or decremented; initiating the generation of a mode determining signal when the magnitude of the stored number is unity and a number changing signal is in transmission to said storing means that will cause the magnitude of the stored number to be zero; and generating said mode determining signal in accordance with the number changing signal immediately following the number changing signal that will cause the value of the stored number to be zero, said mode determining signal causing counting to be performed in a first mode for altering a positive polarity number when said following signal is a number incrementing signal and causing counting to be performed in a second mode for altering a negative polarity number when said following signal is a number decrementing signal.
Claim 8
Independent Claim
227 words
A method of determining the proper counting mode for changing a stored number of a particular polarity in response to number changing signals comprising the steps of: transmitting number changing signals in a sequence to a number storing means constructed to change the value of the stored number in response to said received number changing signals; generating signals indicating the magnitude of the stored number; generating a count direction signal for each number changing signal in transmission to the said storing means that indicates whether the number changing signal will cause the magnitude of the stored number to be incremented or decremented; initiating the generation of a mode determining signal when the magnitude of the stored number is unity and a number changing signal is in transmission to said storing means that will cause the magnitude of the stored number to be zero; and generating said mode determining signal in accordance with the number changing signal immediately following the number changing signal that will cause the value of the stored number to be zero, said mode determining signal causing counting to be performed in a first mode for altering a positive polarity number when said following signal is a number incrementing signal and causing counting to be performed in a second mode for altering a negative polarity number when said following signal is a number decrementing signal.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |