US3619793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital waveform generator with adjustable time shift and automatic phase control
Assignee: Atlantic Richfield Co
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Filing: 1969-11-05
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Granted: 1971-11-09
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Expires: 1989-11-05
Abstract
Abstract A circuit for generating two pulse waveforms having a desired time and phase relationship, and an optically pumped magnetometer utilizing that circuit. A synchronization signal toggles a bistable multivibrator to provide one pulse waveform. The synchronization signal also triggers a monostable multivibrator, the output of which toggles a second bistable multivibrator to provide the second pulse waveform. The time the monostable multivibrator remains in its unstable state determines the desired time relationship between the two waveforms. Should the waveforms assume the wrong phase relationship, gating circuitry returns them to the proper phase relationship. The circuit can be utilized to provide a phase reference signal and a sweep control signal in an optically pumped magnetometer, giving the desired time and phase relationship between those two signals.
Inventors
- 👤 Marshall B Broome
- 👤 William W Burress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:52
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/24; G01R33/26; H; H03; H03K; H03K5/00; H03K5/13
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
245 words
Apparatus for generating first and second pulse waveforms comprising: input means adapted for connection to a source of triggering signals; first pulse circuit means connected to said input means for generating a first pulse waveform responsive to triggering signals, said first pulse circuit means comprising a bistable multivibrator having a symmetrical triggering input connected to said input means; second pulse circuit means connected to said input means for generating a second pulse waveform responsive to triggering signals, said second pulse circuit means comprising a monostable multivibrator having an input connected to said input means and a bistable multivibrator having a symmetrical triggering input connected to the output of said monostable multivibrator; and gating means connected to said first and second pulse circuit means and responsive to the first and second pulse waveforms for maintaining the waveforms in a preset phase relationship, said gating means comprising a NAND gate having a first input connected to the output of the bistable multivibrator of said first pulse circuit means, a second input connected to the output of the bistable multivibrator of said second pulse circuit means, and a third input connected to the output of said monostable multivibrator, said NAND gate applying a setting signal to the bistable multivibrator of said second pulse circuit means to change the state thereof when said first and second pulse waveforms have a phase relationship other than said preset phase relationship during the time said monostable multivibrator is in its stable state.
Claim 2
Dependent Claim
245 words
Apparatus for generating first and second pulse waveforms comprising: input means adapted for connection to a source of triggering signals; first pulse circuit means connected to said input means for generating a first pulse waveform responsive to triggering signals, said first pulse circuit means comprising a bistable multivibrator having a symmetrical triggering input connected to said input means; second pulse circuit means connected to said input means for generating a second pulse waveform responsive to triggering signals, said second pulse circuit means comprising a monostable multivibrator having an input connected to said input means and a bistable multivibrator having a symmetrical triggering input connected to the output of said monostable multivibrator; and gating means connected to said first and second pulse circuit means and responsive to the first and second pulse waveforms for maintaining the waveforms in a preset phase relationship, said gating means comprising a NAND gate having a first input connected to the output of the bistable multivibrator of said first pulse circuit means, a second input connected to the output of the bistable multivibrator of said second pulse circuit means, and a third input connected to the output of said monostable multivibrator, said NAND gate applying a setting signal to the bistable multivibrator of said second pulse circuit means to change the state thereof when said first and second pulse waveforms have a phase relationship other than said preset phase relationship during the time said monostable multivibrator is in its stable state.
Claim 3
Dependent Claim
41 words
Apparatus as claimed in claim 1 in which said second pulse circuit means includes control means for maintaining a preset time relationship between corresponding pulses in the first and second pulse waveforms, said control means being connected to said monostable vibrator.
References Cited (Backward Citations)
US3340951A
Cited
US3350651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |