US3609705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multivibrator responsive to noisy and noiseless signals
Assignee: International Business Machines Corp
•
Filing: 1969-11-26
•
Granted: 1971-09-28
•
Expires: 1989-11-26
Abstract
Abstract A multivibrator is provided with a control circuit that generates control signals having a first characteristic which sets and latches simultaneously the output signal of the multivibrator to a binary state that is indicative of the binary state of a noisy input signal at the termination of a first time period. The control circuit also generates the control signals with a second characteristic that sets the output signal of the multivibrator to a binary state which is indicative of the binary state of a noiseless input signal that is applied during a predetermined time interval and thereafter latches the output signal to the binary state to which the output signal was set during the time interval. The first time period is selected to be equal at least to the time duration of the noise time characteristic of the noisy signals thereby allowing the noisy signal to be stored in the multivibrator only after the input signal has reached the binary level which is to be stored. The length of the time interval is selected to allow the setting of the multivibrator at any time within the time interval regardless of the time of arrival, i.e. of application, of the noiseless signal during the time interval. Also, a system in which the multivibrator and control circuit is used for commonly storing signals from a noisy signal source such as a data processing unit and a noisy signal source such as a storage system of the magnetic memory type.
Inventors
- 👤 Brian R Mercy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:45
CPC Classifications
G; G06; G06F; G06F5/00; G06F5/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
209 words
Circuit apparatus responsive to mutually exclusively applied predetermined types of noisy and noiseless binary signals, said noisy signal type having a noise time characteristic of a predetermined time duration, said apparatus comprising in combination: multivibrator means having input means and output means said multivibrator means providing output signals at said output means in response to the noisy and noiseless signals applied to said input means; and control means coupled to said input means and including means for providing thereat control signals having first and second predetermined characteristics, said first predetermined characteristic of said control signals setting and latching simultaneously said output signal of said multivibrator means to a binary state indicative of the binary state of a noisy signal at the termination of a predetermined first time period equal to at least said predetermined time duration, and said second predetermined characteristic of said control signals setting said output signal of said multivibrator means to a binary state indicative of the binary state of a noiseless signal applied during a predetermined time interval regardless of the time of application of the noiseless signal applied during said predetermined time interval and thereafter latching the output signal to the binary state to which said output signal was set during said time interval.
Claim 2
Dependent Claim
209 words
Circuit apparatus responsive to mutually exclusively applied predetermined types of noisy and noiseless binary signals, said noisy signal type having a noise time characteristic of a predetermined time duration, said apparatus comprising in combination: multivibrator means having input means and output means said multivibrator means providing output signals at said output means in response to the noisy and noiseless signals applied to said input means; and control means coupled to said input means and including means for providing thereat control signals having first and second predetermined characteristics, said first predetermined characteristic of said control signals setting and latching simultaneously said output signal of said multivibrator means to a binary state indicative of the binary state of a noisy signal at the termination of a predetermined first time period equal to at least said predetermined time duration, and said second predetermined characteristic of said control signals setting said output signal of said multivibrator means to a binary state indicative of the binary state of a noiseless signal applied during a predetermined time interval regardless of the time of application of the noiseless signal applied during said predetermined time interval and thereafter latching the output signal to the binary state to which said output signal was set during said time interval.
Claim 3
Dependent Claim
98 words
Circuit apparatus to claim 1 wherein said multivibrator means further comprises a predetermined number of bistable circuit stages, and said means for providing said control signals comprises predetermined logic circuit means, said control signals including first and second bilevel control signals, said logic circuit means providing said first and second control signals with their respective levels having at least first, second and third binary relationships with respect to each other, each of said bistable stages being inhibited, exclusively settable, and settable and latchable by said first and second control signals with said, first, second and third relationships, respectively.
Claim 4
Dependent Claim
106 words
Circuit apparatus according to claim 2 wherein said logic circuit means provides in the presence of said noisy signal applied to said multivibrator means said first and second control signals with said first relationshIp during said first time period and provides said first and second control signals with said third relationship after said termination of said first time period, said logic circuit means further providing in the presence of noiseless signals applied to said multivibrator means said first and second control signals with said second relationship during said time interval and providing said first and second control signals with said third relationship thereafter said time interval.
Claim 5
Dependent Claim
217 words
In a data processing system, the combination comprising: a first signal source of noisy binary data signals, said noisy data signals having a noise time characteristic of a predetermined duration; a second signal source of noiseless binary data signals; multivibrator means having input means and output means, said multivibrator means providing output signals at said output means in response to the noisy and noiseless signals mutually exclusively applied to said input means, and control means coupled to said input means and including means for providing thereat control signals having a first and second predetermined characteristics, a said first predetermined characteristic of said control signals setting and latching simultaneously said output signal of said multivibrator means to a binary state indicative of the binary state of a noisy signal at the termination of a predetermined first time period equal to at least said predetermined time duration, and said second predetermined characteristic of said control signals setting said output signal of said multivibrator means to a binary state indicative of the binary state of a noiseless signal applied during a predetermined time interval regardless of the time of application of the noiseless signal during said predetermined time interval and thereafter latching the output signal to the binary state to which said output signal was set during said time interval.
Claim 6
Dependent Claim
217 words
In a data processing system, the combination comprising: a first signal source of noisy binary data signals, said noisy data signals having a noise time characteristic of a predetermined duration; a second signal source of noiseless binary data signals; multivibrator means having input means and output means, said multivibrator means providing output signals at said output means in response to the noisy and noiseless signals mutually exclusively applied to said input means, and control means coupled to said input means and including means for providing thereat control signals having a first and second predetermined characteristics, a said first predetermined characteristic of said control signals setting and latching simultaneously said output signal of said multivibrator means to a binary state indicative of the binary state of a noisy signal at the termination of a predetermined first time period equal to at least said predetermined time duration, and said second predetermined characteristic of said control signals setting said output signal of said multivibrator means to a binary state indicative of the binary state of a noiseless signal applied during a predetermined time interval regardless of the time of application of the noiseless signal during said predetermined time interval and thereafter latching the output signal to the binary state to which said output signal was set during said time interval.
Claim 7
Dependent Claim
101 words
A data processing system according to claim 4 wherein said multivibrator means further comprises a predetermined number of bistable circuit stages, and said means for providing said control signals comprises predetermined logic circuit means, said control signals including first and second bilevel control signals, said logic circuit means providing said first and second control signals with their respective levels having at least first, second and third binary relationships with respect to each other, each of said bistable stages being inhibited, exclusively settable, and settable and latchable by said first and second control signals with said first, second and third relationships, respectively.
Claim 8
Dependent Claim
108 words
A data processing system according to claim 5 wherein said logic circuit means provides in the presence of said noisy signal applied to said multivibrator means said first and second control signals with said first relationship during said first time period and provides said first and second control signals with said third relationship after said termination of said first time period, said logic circuit means further providing in the presence of noiseless signals applied to said multivibrator means said first and second control signals with said second relationship during said time interval and providing said first and second control signals with said third relationship thereafter said time interval.
Claim 9
Dependent Claim
25 words
A data processing system according to claim 4 wherein said first and second signal sources comprise a data processing unit and data storage unit, respectively.
Claim 10
Dependent Claim
19 words
A data processing system according to claim 7 wherein said data storage unit is of the magnetic memory type.
Claim 11
Dependent Claim
35 words
A data processing system according to claim 7 wherein said multivibrator means includes data transfer means for transferring the data from at least one of said sources to the other source through said multivibrator means.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |