US4339657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Error logging for automatic apparatus
Assignee: International Business Machines Corp
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Filing: 1980-02-06
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Granted: 1982-07-13
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Expires: 2000-02-06
Abstract
Abstract Method and apparatus for improved error logging by integrating errors over a given number of operations that provides long memory and fast recovery. Errors integrated over a selected number of associated operations are compared to a criterion. An exception is logged each time the number of errors is not less than the criterion but if the number of errors is less than the criterion, the exception log is cleared.
Inventors
- 👤 David D. Larson
- 👤 Stanley T. Riddle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:26
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/55
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
143 words
In a control system having means for supplying command signals to initiate system functions and means for producing error signals indicating system malfunctions, the combination comprising: means responsive to said command signals for producing a control signal after a certain number of command signals have been supplied; error counter means responsive to said error signals for storing a count value representing the number of error signals which have occurred; sensing means responsive to said error counter means for producing a value signal when said error counter means is storing a value not less than a predetermined value; and exception counter means responsive to the value signal and said control signal for incrementing said exception counter means by said control signal if said value signal is present and resetting said exception counter means by said control signal if said value signal is not present.
Claim 2
Dependent Claim
143 words
In a control system having means for supplying command signals to initiate system functions and means for producing error signals indicating system malfunctions, the combination comprising: means responsive to said command signals for producing a control signal after a certain number of command signals have been supplied; error counter means responsive to said error signals for storing a count value representing the number of error signals which have occurred; sensing means responsive to said error counter means for producing a value signal when said error counter means is storing a value not less than a predetermined value; and exception counter means responsive to the value signal and said control signal for incrementing said exception counter means by said control signal if said value signal is present and resetting said exception counter means by said control signal if said value signal is not present.
Claim 3
Dependent Claim
76 words
The invention as claimed in claim 1 wherein said means for producing said control signal includes: limit register means for storing said certain number; command counter means responsive to said command signals for storing a count value representing the number of command signals which have occurred; and comparator means responsive to said limit register means and said command counter means for producing said control signal when said command count value is equal to said certain number.
Claim 4
Dependent Claim
51 words
The invention as claimed in claim 2 wherein said sensing means includes: criteria register means for storing said predetermined value; and comparator means responsive to said error counter means and said criteria register means for producing said value signal while the error count value is not less than said predetermined value.
Claim 5
Dependent Claim
23 words
The invention as claimed in claim 3 including: means responsive to said control signal for resetting said command counter and said error counter.
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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) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |