US3783256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data handling system maintenance arrangement for rechecking signals
Assignee: AG Communication Systems Corp
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Filing: 1972-07-12
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Granted: 1974-01-01
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Expires: 1992-07-12
Abstract
Abstract A maintenance arrangement for use with a data handling system producing data handling signals responds to a false signal condition to cause the data handling system to reproduce the data handling signals by adjusting a timing generator providing the timing control for the data handling system and by inhibiting from changing the inputs to the logic circuits generating the signals, so that the data signals may be reviewed to determine whether the false signal condition was a self-correcting error condition as in the case of a momentary false signal condition caused by noise or the like, or a more permanent fault condition which requires servicing by other equipment. By selectively adjusting different timing distributors of the timing generator, only certain ones of the handling signals and not all of them are reproduced.
Inventors
- 👤 J Caputo
- 👤 Toole G O
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:24
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/16; G06F11/1629; G06F11/1641; G06F11/14; G06F11/1402; G06F11/1405; G06F11/141; H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/54; H04Q3/545; H04Q3/54575; H04Q3/54591
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
122 words
A maintenance arrangement for a data handling system having logic circuits producing data handling signals in response to timing signals generated by a timing generator and in response to data signals from other circuits, said arrangement comprising: recycling means for adjusting the timing generator to repeat at least selected ones of the timing signals; means to produce a maintenance request signal, and starting means responsive to said maintenance request signal for causing said recycling means to adjust the timing generator and thus to repeat at least selected ones of said timing signals so that data handling signals are reproduced; and inhibiting means responsive to said recycling means for preventing the logic circuits producing thE data handling signals from changing their signal conditions.
Claim 2
Dependent Claim
122 words
A maintenance arrangement for a data handling system having logic circuits producing data handling signals in response to timing signals generated by a timing generator and in response to data signals from other circuits, said arrangement comprising: recycling means for adjusting the timing generator to repeat at least selected ones of the timing signals; means to produce a maintenance request signal, and starting means responsive to said maintenance request signal for causing said recycling means to adjust the timing generator and thus to repeat at least selected ones of said timing signals so that data handling signals are reproduced; and inhibiting means responsive to said recycling means for preventing the logic circuits producing thE data handling signals from changing their signal conditions.
Claim 3
Dependent Claim
16 words
An arrangement according to claim 1, wherein said maintenance request signal indicates a false signal condition.
Claim 4
Dependent Claim
164 words
An arrangement according to claim 1, further including a second data handling system having second logic circuits for producing second data handling signals corresponding to the first-mentioned data handling signals, means to supply said data signal from other circuits to both said data handling systems, the two data handling systems having means to operate in an identical manner so that said data handling signals are the same, means to synchronize the operation of the two data handling systems so that the data handling signals occur at substantially the same time, matching means connected to compare corresponding ones of the first-mentioned and second data handling signals with means to generate said maintenance request signal when any one or more of the first-mentioned data handling signals do not agree with the corresponding ones of the second data handling signals, wherein said maintenance request signal is a non-comparison signal occurring when one or more of the pairs of first-mentioned and second data handling signals do not agree.
Claim 5
Dependent Claim
157 words
An arrangement according to claim 3, further including a second timing generator for supplying second timing signals to said second data handling system, the first and second timing generators being driven in synchronism by a system clock source; second recycling means for adjusting the second timing generator to repeat at least selected ones of the timing signals; second starting means responsive to said maintenance request signal for causing said second recycling means to adjust the second timing generator and thus to repeat at least selected ones of said second timing signals so that said second data handling signals are reproduced; second inhibiting means responsive to said second recycling means for preventing said second logic circuits producing the second data handling signals from changing their signal conditions, comparison timing means for causing said first and second starting means to operate substantially simultaneously to cause said first and second timing generator to be adjusted substantially simultaneously for resynchronization purposes.
Claim 6
Dependent Claim
55 words
An arrangement according to claim 4, wherein each one of said first and second timing generators includes a recycling X pulse distributor and a recycling Y pulse distributor driving said X pulse distributor, each one of said recycling means being adapted to halt its Y pulse distributor to permit its X pulse distributor to recycle.
Claim 7
Dependent Claim
26 words
An arrangement according to claim 5, wherein each one of said recycling means resets its Y pulse distributor to a predetermined signal condition to recycle it.
Claim 8
Dependent Claim
56 words
An arrangement according to claim 6, wherein each one of the timing generators further includes a Z pulse distributor driven by the Y pulse distributor, each one of said recycling means resetting its Y pulse distributor and its Z pulse distributor to a predetermined Y pulse signal condition and a predetermined Z pulse signal condition, respectively.
Claim 9
Dependent Claim
71 words
An arrangement according to claim 7, further including multiplexing means for supplying selectively pairs of said first and second data handling signals to said matching means in response to a plurality of level select signals to generate a plurality of other maintenance request signals, said recycling means causing said distributors to be halted in response to a first one of said select signals and to one of said maintenance request signals.
Claim 10
Dependent Claim
43 words
An arrangement according to claim 8, wherein said recycling means causing said Y distributors and said Z distributors to be reset to their predetermined signal conditions in response to another one of said select signals and to one of said maintenance request signals.
Claim 11
Dependent Claim
60 words
An arrangement according to claim 9, further including logic means responsive to one of said maintenance requeSt signals and to still another one of said select signals to cause all of said select signals to be generated to cause said first and second data handling signals to be transferred to memory means for the first and second data handling systems.
Claim 12
Dependent Claim
41 words
An arrangement according to claim 1, wherein the timing generator includes a recycling X pulse distributor driving a recycling Y pulse distributor, said recycling means being adapted to halt the Y pulse distributor to permit the X pulse distributor to recycle.
Claim 13
Dependent Claim
24 words
An arrangement according to claim 11, wherein said recycling means includes an X recycle counter for controlling said recycling of said X pulse distributor.
Claim 14
Dependent Claim
23 words
An arrangement according to claim 11, wherein said recycling means resets the Y pulse distributor to a predetermined signal condition to recycle it.
Claim 15
Dependent Claim
25 words
An arrangement according to claim 13, wherein said recycling means includes a Y recycle ring counter for controlling said recycling of the Y pulse distributor.
Claim 16
Dependent Claim
55 words
An arrangement according to claim 13, wherein the timing generator includes a Z pulse distributor driven by the Y pulse distributor, said recycling means resetting the Y pulse distributor and the Z pulse distributor to a predetermined Y pulse signal condition and a predetermined Z pulse signal condition, respectively for recycling the Z pulse distributor.
Claim 17
Dependent Claim
25 words
An arrangement according to claim 15, wherein said recycling means includes a Z recycle ring counter for controlling said recycling of the Z pulse distributor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |