US3867648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse width shortening circuit
Assignee: AG Communication Systems Corp
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Filing: 1974-01-02
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Granted: 1975-02-18
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Expires: 1994-01-02
Abstract
Abstract Apparatus for generating a first series of output pulses and a corresponding series of delayed output pulses, each delayed pulse being adjustably delayed with respect to the corresponding first output pulse by a selectable time interval. In a specific embodiment of the invention, the apparatus comprises an astable oscillator for generating the first output pulses, a monostable oscillator for generating adjustably delayed pulses responsive to the corresponding first pulses, and pulse shortening means for processing the adjustably delayed pulse to provide delayed output pulses of reduced pulse width.
Inventors
- 👤 Gerald A Christenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:51
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/13; H03K5/01; H03K5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
Apparatus for developing output pulses of reduced pulse width responsive to corresponding input pulses of larger pulse width comprising: a capacitor developing a control potential representative of the charge stored therein responsive to the input pulse being coupled thereto, the capacitor being charged during intervals between the input pulses and discharged at a predetermined rate during intervals coinciding with the input pulses; an amplifier, the amplifier having a biasing arrangement for developing a bias current to maintain the amplifier in an ON state; first switching means coupled to the amplifier for diverting the bias current from the amplifier during intervals between the input pulses to turn the amplifier OFF; and second switching means coupled between the capacitor and the amplifier for diverting the bias current from the amplifier to turn the amplifier OFF responsive to the control potential falling below a switching threshold.
Claim 2
Dependent Claim
143 words
Apparatus for developing output pulses of reduced pulse width responsive to corresponding input pulses of larger pulse width comprising: a capacitor developing a control potential representative of the charge stored therein responsive to the input pulse being coupled thereto, the capacitor being charged during intervals between the input pulses and discharged at a predetermined rate during intervals coinciding with the input pulses; an amplifier, the amplifier having a biasing arrangement for developing a bias current to maintain the amplifier in an ON state; first switching means coupled to the amplifier for diverting the bias current from the amplifier during intervals between the input pulses to turn the amplifier OFF; and second switching means coupled between the capacitor and the amplifier for diverting the bias current from the amplifier to turn the amplifier OFF responsive to the control potential falling below a switching threshold.
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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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |