US3714499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for testing the ignition of an internal combustion engine
Assignee: AUTOSCAN Inc
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Filing: 1970-05-15
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Granted: 1973-01-30
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Expires: 1990-05-15
Abstract
Abstract This invention relates to a system for providing a controlled sweep of a beam in accordance with a variable rate of recurrence of a particular phenomenon. The rate of sweep is adjusted so that the sweep occurs during a particular portion of the time between successive recurrences of the particular phenomenon. The retrace occurs during the remaining portion of the time between successive recurrences of the particular phenomenon.
Inventors
- 👤 E Pelta
- 👤 K Gold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:55
CPC Classifications
F; F02; F02P; F02P17/00; F02P17/02
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
135 words
In a system for providing display of analog signals on a periodic basis, there being means to derive trigger signals respectively from a particular recurring characteristic portion of the analog signals; first means responsive to the trigger signals for providing sweep signals on a periodic basis; second means responsive to the trigger signals for controlling the rate of change of the sweep signals in accordance with the frequency of occurrence of the trigger signals; third means operatively coupled to the first and second means for controlling the retrace of the sweep signals at a particular time in each sweep relative to the time between successive sweep signals; and fourth means operatively coupled to the first means to provide display of the analog signal over a time base dependent upon the time of the sweep signals.
Claim 2
Dependent Claim
135 words
In a system for providing display of analog signals on a periodic basis, there being means to derive trigger signals respectively from a particular recurring characteristic portion of the analog signals; first means responsive to the trigger signals for providing sweep signals on a periodic basis; second means responsive to the trigger signals for controlling the rate of change of the sweep signals in accordance with the frequency of occurrence of the trigger signals; third means operatively coupled to the first and second means for controlling the retrace of the sweep signals at a particular time in each sweep relative to the time between successive sweep signals; and fourth means operatively coupled to the first means to provide display of the analog signal over a time base dependent upon the time of the sweep signals.
Claim 3
Dependent Claim
135 words
In a system for providing display of analog signals on a periodic basis, there being means to derive trigger signals respectively from a particular recurring characteristic portion of the analog signals; first means responsive to the trigger signals for providing sweep signals on a periodic basis; second means responsive to the trigger signals for controlling the rate of change of the sweep signals in accordance with the frequency of occurrence of the trigger signals; third means operatively coupled to the first and second means for controlling the retrace of the sweep signals at a particular time in each sweep relative to the time between successive sweep signals; and fourth means operatively coupled to the first means to provide display of the analog signal over a time base dependent upon the time of the sweep signals.
Claim 4
Dependent Claim
135 words
In a system for providing display of analog signals on a periodic basis, there being means to derive trigger signals respectively from a particular recurring characteristic portion of the analog signals; first means responsive to the trigger signals for providing sweep signals on a periodic basis; second means responsive to the trigger signals for controlling the rate of change of the sweep signals in accordance with the frequency of occurrence of the trigger signals; third means operatively coupled to the first and second means for controlling the retrace of the sweep signals at a particular time in each sweep relative to the time between successive sweep signals; and fourth means operatively coupled to the first means to provide display of the analog signal over a time base dependent upon the time of the sweep signals.
Claim 5
Dependent Claim
27 words
In a system as set forth in claim 1, the thiRd means providing the retrace of the sweep signal at a particular amplitude of the sweep signal.
Claim 6
Dependent Claim
54 words
In a system as set forth in claim 2, the third means operating in synchronism with the trigger signals and in response to the particular amplitude of the sweep signal to control the slope of the sweep signal to maintain the production of the particular amplitude at a particular time between successive trigger signals.
Claim 7
Dependent Claim
34 words
In a system as set forth in claim 1, including means responsive to the rate of change of the sweep signals for brightening the display when the rate of change exceeds a particular value.
Claim 8
Dependent Claim
138 words
In a control circuit for providing a visual display of analog signals, first means responsive to the analog signals for producing trigger signals representative of the occurrence of particular characteristic portions of the analog signals; ramp generator means responsive to the occurrence of the trigger signals to produce sweep signals in synchronism with the trigger signals for the time base control of the display; second means responsive to the trigger signals for varying the rate of change of the sweep signals in accordance with the frequency of the trigger signals to provide an increase in the rate of change of the sweep signals with increasing frequency of the trigger signals; and third means responsive to the trigger signals for providing a retrace of the sweep signals at a particular time relative to the time between successive trigger pulses.
Claim 9
Dependent Claim
138 words
In a control circuit for providing a visual display of analog signals, first means responsive to the analog signals for producing trigger signals representative of the occurrence of particular characteristic portions of the analog signals; ramp generator means responsive to the occurrence of the trigger signals to produce sweep signals in synchronism with the trigger signals for the time base control of the display; second means responsive to the trigger signals for varying the rate of change of the sweep signals in accordance with the frequency of the trigger signals to provide an increase in the rate of change of the sweep signals with increasing frequency of the trigger signals; and third means responsive to the trigger signals for providing a retrace of the sweep signals at a particular time relative to the time between successive trigger pulses.
Claim 10
Dependent Claim
29 words
A circuit as set forth in claim 5, the third means being operative to provide the retrace of the sweep signals when the sweep signals reach a particular amplitude.
Claim 11
Dependent Claim
26 words
A circuit as set forth in claim 5, including means for providing a visual display of the analog signals during the production of the sweep signals.
Claim 12
Dependent Claim
179 words
In a testing system for analog signals having characteristic portions comprising: means responsive to the analog signals for providing trigger signals in timed relation to the occurrence of the characteristic portions of the analog signals; sweep signal generator means including first means responsive to the trigger signals to initiate the production of sweep signals in accordance with the occurrence of the trigger signals and including second means responsive to the rate of occurrence of the trigger signals to vary the rate of change of the sweep signals in accordance with the frequency of occurrence of the sweep signals; means responsive to a particular amplitude in said sweep signals to produce control signals; means responsive to the production of the control signals for adjusting the rate of change of the sweep signals to obtain the production of the particular amplitude in the sweep signals at a particular time phase relative to the times between the occurrence of successive pairs of the trigger signals; and means responsive to the control signals to provide a repetitive visual display of the analog signals.
Claim 13
Dependent Claim
179 words
In a testing system for analog signals having characteristic portions comprising: means responsive to the analog signals for providing trigger signals in timed relation to the occurrence of the characteristic portions of the analog signals; sweep signal generator means including first means responsive to the trigger signals to initiate the production of sweep signals in accordance with the occurrence of the trigger signals and including second means responsive to the rate of occurrence of the trigger signals to vary the rate of change of the sweep signals in accordance with the frequency of occurrence of the sweep signals; means responsive to a particular amplitude in said sweep signals to produce control signals; means responsive to the production of the control signals for adjusting the rate of change of the sweep signals to obtain the production of the particular amplitude in the sweep signals at a particular time phase relative to the times between the occurrence of successive pairs of the trigger signals; and means responsive to the control signals to provide a repetitive visual display of the analog signals.
Claim 14
Dependent Claim
28 words
A circuit as set forth in claim 8, the display means including an oscilloscope for displaying the analog signal and for producing an unblank signal for the display.
Claim 15
Independent Claim
168 words
A system for displaying periodically occurring analog signals having particular characteristic portions, comprising: first means responsive to the particular characteristic portions of the analog signals to provide synchronizing signals upon the occurrence of such particular characteristic portions; second means responsive to the synchronizing signals for providing recurring sweep signals having a rate of change corresponding to the frequency of said synchronizing signals; separately operable third means included in the second means for providing sweep starting signal preceding particular ones of the synchronizing signals by a period related to the inverse of the rate of occurrence of said synchronizing signals; means responsive to the synchronizing signals and said sweep starting signals for providing display control signals having a durAtion inversely related to the rate of occurrence of said synchronizing signals and having an occurrence dependent upon the occurrence of said sweep starting signals; and means responsive to the display control signals and to the sweep signals for displaying the analog signals during the production of the display control signals.
Claim 16
Independent Claim
168 words
A system for displaying periodically occurring analog signals having particular characteristic portions, comprising: first means responsive to the particular characteristic portions of the analog signals to provide synchronizing signals upon the occurrence of such particular characteristic portions; second means responsive to the synchronizing signals for providing recurring sweep signals having a rate of change corresponding to the frequency of said synchronizing signals; separately operable third means included in the second means for providing sweep starting signal preceding particular ones of the synchronizing signals by a period related to the inverse of the rate of occurrence of said synchronizing signals; means responsive to the synchronizing signals and said sweep starting signals for providing display control signals having a durAtion inversely related to the rate of occurrence of said synchronizing signals and having an occurrence dependent upon the occurrence of said sweep starting signals; and means responsive to the display control signals and to the sweep signals for displaying the analog signals during the production of the display control signals.
Claim 17
Dependent Claim
188 words
In combination for providing a visual display of recurrent phenomena on a display tube by controlling the trace in the display tube; means for producing a voltage progressively variable on a cyclic basis to a particular amplitude in accordance with the recurrence of the phenomena; means responsive to the progressively variable voltage for producing a sweep of the trace in a first direction across the tube; means responsive to the progressively variable voltage for adjusting the progressive variation in the voltage to the particular amplitude to provide for the production of the particular amplitude at a particular time relative to the times between successive recurrences of the phenomena; means responsive to the recurrent phenomena for controlling the movement of the trace across the tube in a second direction transverse to the first direction; means responsive to the movement of the trace in the first direction for providing a control signal when the rate of movement of the trace in the first direction exceeds a particular value; and means responsive to the production of the control signal for brightening the visual display of the trace in the display tube.
Claim 18
Dependent Claim
188 words
In combination for providing a visual display of recurrent phenomena on a display tube by controlling the trace in the display tube; means for producing a voltage progressively variable on a cyclic basis to a particular amplitude in accordance with the recurrence of the phenomena; means responsive to the progressively variable voltage for producing a sweep of the trace in a first direction across the tube; means responsive to the progressively variable voltage for adjusting the progressive variation in the voltage to the particular amplitude to provide for the production of the particular amplitude at a particular time relative to the times between successive recurrences of the phenomena; means responsive to the recurrent phenomena for controlling the movement of the trace across the tube in a second direction transverse to the first direction; means responsive to the movement of the trace in the first direction for providing a control signal when the rate of movement of the trace in the first direction exceeds a particular value; and means responsive to the production of the control signal for brightening the visual display of the trace in the display tube.
Claim 19
Independent Claim
278 words
A system for processing a train of analog signals having a variable frequency and recurring characteristic portions, comprising: first circuit means responsive to the analog signals to derive a train of trigger signals from the recurring characteristic portions of the analog signals; time base generator means responsive to the trigger signals for producing sweep signals at an adjustable rate of change; second circuit means responsive to the trigger signals for adjusting the rate of change of the sweep signals in accordance with changes in the frequency of the trigger signals to provide increases in the rate of change of the sweep signals with increases in the frequency of the sweep signals; third circuit means responsive to a particular amplitude in the sweep signals for providing a retrace in the sweep signals; fourth circuit means responsive to the sweep signals for adjusting the rate of change of the sweep signals to obtain the particular amplitude in the sweep signals at a particular time relative to the time between successive pairs of trigger signals; counter means operatively coupled to the first circuit means to provide a count of the trigger signals and to provide a change of count in synchronism with the production of the train of trigger signals and including count number selecting means to provide an output signal when a particular count has been reached; means responsive to the output signal to produce an enabling signal during a particular period of time during which a particular analog signal is expected to occur; and display means responsive to the enabling signal and the sweep signals and the particular analog signal to provide a visual display of said analog signal.
Claim 20
Independent Claim
278 words
A system for processing a train of analog signals having a variable frequency and recurring characteristic portions, comprising: first circuit means responsive to the analog signals to derive a train of trigger signals from the recurring characteristic portions of the analog signals; time base generator means responsive to the trigger signals for producing sweep signals at an adjustable rate of change; second circuit means responsive to the trigger signals for adjusting the rate of change of the sweep signals in accordance with changes in the frequency of the trigger signals to provide increases in the rate of change of the sweep signals with increases in the frequency of the sweep signals; third circuit means responsive to a particular amplitude in the sweep signals for providing a retrace in the sweep signals; fourth circuit means responsive to the sweep signals for adjusting the rate of change of the sweep signals to obtain the particular amplitude in the sweep signals at a particular time relative to the time between successive pairs of trigger signals; counter means operatively coupled to the first circuit means to provide a count of the trigger signals and to provide a change of count in synchronism with the production of the train of trigger signals and including count number selecting means to provide an output signal when a particular count has been reached; means responsive to the output signal to produce an enabling signal during a particular period of time during which a particular analog signal is expected to occur; and display means responsive to the enabling signal and the sweep signals and the particular analog signal to provide a visual display of said analog signal.
Claim 21
Dependent Claim
46 words
In a testing system as set forth in claim 12, means responsive to the rate of change of the sweep signals for obtaining a brightening of the visual display of the analog signals when the rate of change of the sweep signals exceeds a particular value.
Claim 22
Dependent Claim
43 words
A system as set forth in claim 12, including, means responsive to the sweep signals and operatively coupled to the display means for increasing the brightness of the visual display when the rate of change of the sweep signals exceeds a particular value.
Claim 23
Dependent Claim
47 words
A system as set forth in claim 14 wherein means are included for adjusting the rate of change of the sweep signals to obtain the production of a particular amplitude for the sweep signals at particular timEs relative to the production of successive pairs of synchronizing signals.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |