Patent US3778823A successfully refreshed from Google Patents.
US4247897A
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Train vehicle control microprocessor power reset
Assignee: Bombardier Transportation Holdings USA Inc
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Filing: 1979-10-25
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Granted: 1981-01-27
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Expires: 1999-10-25
Abstract
Abstract There is disclosed a passenger vehicle operation control apparatus and method including program microprocessor control apparatus for providing a dynamic output signal when the microprocessor completes a predetermined main computer control program subroutine and this dynamic output signal operates with a hardware logic circuit apparatus including a timing circuit such that a repetition rate in excess of that required to keep the timing circuit reset is required, otherwise the computer control program is reinitialized.
Inventors
- 👤 Michael P. McDonald
- 👤 Larry W. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:32
CPC Classifications
B; B61; B61L; B61L27/00; B61L27/50; B61L27/57
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
132 words
In apparatus for determining the desired performance of a vehicle, the combination of means for providing a first operation periodically executing a sequence of steps in relation to said desired performance of the vehicle and developing an output signal for each periodic completion of the sequence of steps and for providing a second operation effecting a predetermined reinitialization of said first operation, means responsive to the respective output signals being developed at an actual repetition rate in accordance with each periodic completion of the sequence of steps for selecting one of the first operation and the second operation by a comparison of said actual repetition rate with a predetermined reference repetition rate, and means responsive to each periodic execution of the sequence of steps for providing said desired performance of the vehicle.
Claim 2
Dependent Claim
132 words
In apparatus for determining the desired performance of a vehicle, the combination of means for providing a first operation periodically executing a sequence of steps in relation to said desired performance of the vehicle and developing an output signal for each periodic completion of the sequence of steps and for providing a second operation effecting a predetermined reinitialization of said first operation, means responsive to the respective output signals being developed at an actual repetition rate in accordance with each periodic completion of the sequence of steps for selecting one of the first operation and the second operation by a comparison of said actual repetition rate with a predetermined reference repetition rate, and means responsive to each periodic execution of the sequence of steps for providing said desired performance of the vehicle.
Claim 3
Dependent Claim
42 words
The apparatus of claim 1, with said apparatus being operative with a power supply and with said reference repetition rate being predetermined such that a power supply failure will result in the actual repetition rate being less than the reference repetition rate.
Claim 4
Dependent Claim
28 words
The apparatus of claim 1, with said selection means being operative to select the second operation when the actual repetition rate is less than the reference repetition rate.
Claim 5
Dependent Claim
28 words
The apparatus of claim 1, with said selection means being operative to select the first operation while the actual repetition rate remains greater than the reference repetition rate.
Claim 6
Dependent Claim
88 words
The apparatus of claim 1, with said first and second operation providing means including at least one digital computer device operative with a control program defining said sequence of steps, said digital computer device developing said output signal for each first operation periodic execution of that control program, and with said selection means including a hardware logic circuit responsive to the occurrence of said output signal at a repetition rate in excess of the reference repetition rate for selecting the first operation periodic execution of that control program.
Claim 7
Dependent Claim
28 words
The apparatus of claim 1, with one step in said sequence of steps being to develop said output signal during each periodic execution of that sequence of steps.
Claim 8
Independent Claim
102 words
The method of controlling a vehicle, including the steps of providing a sequence of control operations for said vehicle during each of successive time periods, providing an output signal in relation to the completion of said sequence of control operations during each of said successive time periods, sensing the actual repetition rate of the provided output signals for comparison with an established reference repetition rate, providing an initialization of said sequence of control operations in accordance with a predetermined relationship between the actual repetition rate and the reference repetition rate, and controlling the vehicle in response to said sequence of control operations.
Claim 9
Independent Claim
102 words
The method of controlling a vehicle, including the steps of providing a sequence of control operations for said vehicle during each of successive time periods, providing an output signal in relation to the completion of said sequence of control operations during each of said successive time periods, sensing the actual repetition rate of the provided output signals for comparison with an established reference repetition rate, providing an initialization of said sequence of control operations in accordance with a predetermined relationship between the actual repetition rate and the reference repetition rate, and controlling the vehicle in response to said sequence of control operations.
Claim 10
Dependent Claim
22 words
The method of claim 7, with said predetermined relationship being that the actual repetition rate is less than the reference repetition rate.
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) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |