US3268733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectrically controlled sawtooth wave oscillator
Assignee: US Philips Corp
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Filing: 1963-11-04
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Granted: 1966-08-23
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Expires: 1983-11-04
Abstract
No abstract record available.
Inventors
- 👤 Deelman Gerardus Jacobus
- 👤 Bronkhorst Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:15
CPC Classifications
H; H03; H03B; H03B17/00; H03K; H03K3/00; H03K3/02; H03K3/35; H03K3/351; H03K3/42; H03K4/00; H03K4/06; H03K4/08; H03K4/83; H03K4/84; H03K4/88; H04; H04N; H04N5/00; H04N5/04; H04N5/12; H04N5/123; Y; Y10; Y10S; Y10S84/00; Y10S84/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A SAWTOOTH WAVE OSCILLATOR COMPRISING IMPEDANCE MEANS HAVING AT LEAST TWO ELECTRODES, PHOTOSENSITIVE MEANS HAVING AT LEAST TWO ELECTRODES AND INCLUDING THE CHARACTERISTIC OF DECREASING IMPEDANCE WITH INCREASING ILLUMINATION, AN ELECTRICALLY OPERABLE BISTABLE LUMINESCENT SWITCHING MEANS HAVING A CONTROL ELECTRODE, A COMMON ELECTRODE AND AN OUTPUT ELECTRODE, SAID ELECTRICALLY OPERABLE BISTABLE LUMINESCENT SWITCHING MEANS OPTICALLY COUPLED TO SAID PHOTOSENSITIVE MEANS, MEANS CONNECTING ONE OF THE ELECTRODES OF SAID IMPEDANCE MEANS AND OF SAID PHOTOSENSITIVE MEANS TO THE OUTPUT ELECTRODE OF SAID LUMINESCENT SWITCHING MEANS, MEANS APPLYING AN OPERATING POTENTIAL, MEANS CONNECTING THE OTHER OF THE ELECTRODES OF SAID IMPEDANCE MEANS TO SAID MEANS APPLYING AN OPERATING POTENTIAL, MEANS APPLYING A REFERENCE POTENTIAL, MEANS CONNECTING THE OTHER ELECTRODE OF SAID PHOTOSENSITIVE MEANS AND THE COMMON ELECTRODE OF SAID ELECTRICALLY OPERABLE BISTABLE LUMINESCENT SWITCHING MEANS TO SAID MEANS APPLYING A REFERENCE POTENTIAL, MEANS FOR APPLYING SYNCHRONIZING PULSES, AND MEANS CONNECTING SAID MEANS FOR APPLYING SYNCHRONIZING PULSES TO THE CONTROL ELECTRODE OF SAID ELECTRICALLY OPERABLE BISTABLE LUMINESCENT SWITCHING MEANS WHEREBY A CHANGE OF STATE OF SAID ELECTRICALLY OPERABLE BISTABLE LUMINESCENT SWITCHING MEANS IS IN SYNCHRONISM WITH SAID PULSES.
Claim 2
Dependent Claim
185 words
A SAWTOOTH WAVE OSCILLATOR COMPRISING IMPEDANCE MEANS HAVING AT LEAST TWO ELECTRODES, PHOTOSENSITIVE MEANS HAVING AT LEAST TWO ELECTRODES AND INCLUDING THE CHARACTERISTIC OF DECREASING IMPEDANCE WITH INCREASING ILLUMINATION, AN ELECTRICALLY OPERABLE BISTABLE LUMINESCENT SWITCHING MEANS HAVING A CONTROL ELECTRODE, A COMMON ELECTRODE AND AN OUTPUT ELECTRODE, SAID ELECTRICALLY OPERABLE BISTABLE LUMINESCENT SWITCHING MEANS OPTICALLY COUPLED TO SAID PHOTOSENSITIVE MEANS, MEANS CONNECTING ONE OF THE ELECTRODES OF SAID IMPEDANCE MEANS AND OF SAID PHOTOSENSITIVE MEANS TO THE OUTPUT ELECTRODE OF SAID LUMINESCENT SWITCHING MEANS, MEANS APPLYING AN OPERATING POTENTIAL, MEANS CONNECTING THE OTHER OF THE ELECTRODES OF SAID IMPEDANCE MEANS TO SAID MEANS APPLYING AN OPERATING POTENTIAL, MEANS APPLYING A REFERENCE POTENTIAL, MEANS CONNECTING THE OTHER ELECTRODE OF SAID PHOTOSENSITIVE MEANS AND THE COMMON ELECTRODE OF SAID ELECTRICALLY OPERABLE BISTABLE LUMINESCENT SWITCHING MEANS TO SAID MEANS APPLYING A REFERENCE POTENTIAL, MEANS FOR APPLYING SYNCHRONIZING PULSES, AND MEANS CONNECTING SAID MEANS FOR APPLYING SYNCHRONIZING PULSES TO THE CONTROL ELECTRODE OF SAID ELECTRICALLY OPERABLE BISTABLE LUMINESCENT SWITCHING MEANS WHEREBY A CHANGE OF STATE OF SAID ELECTRICALLY OPERABLE BISTABLE LUMINESCENT SWITCHING MEANS IS IN SYNCHRONISM WITH SAID PULSES.
References Cited (Backward Citations)
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US2898556A
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US3110813A
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US3034011A
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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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |