US4490730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsed optical storage system
Assignee: Charles Stark Draper Laboratory Inc
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Filing: 1982-10-28
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Granted: 1984-12-25
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Expires: 2002-10-28
Abstract
Abstract A pulsed optical storage system including: rotatable storage means; means for projecting a beam of radiation at the surface of the storage means; means for moving the means for projecting transversely relative to the surface of the storage means; means for sensing the position of the means for projecting relative to the storage means; a radiation source for providing radiation to said means for projecting, including a radiation element, and a switching circuit in close proximity to said radiation element for selectively energizing the radiation element; and a control circuit responsive to the means for sensing for selectively enabling the switching circuit to energize the radiation element to produce pulses of radiation to the means for projecting.
Inventors
- 👤 Douglas G. Youmans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:11
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/14
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
117 words
A pulsed optical storage system comprising: rotatable storage means; means for projecting a beam of radiation at the surface of said storage means; means for moving said means for projecting transversely relative to the surface of said storage means; means for sensing the position of said means for projecting relative to said storage means; a radiation source for providing radiation to said means for projecting, including a radiation element and a switching circuit in close proximity to said radiation element for selectively de-energizing said radiation element; and a control circuit responsive to said means for sensing for selectively enabling said switching circuit to energize said radiation element to produce pulses of radiation to said means for projecting.
Claim 2
Dependent Claim
117 words
A pulsed optical storage system comprising: rotatable storage means; means for projecting a beam of radiation at the surface of said storage means; means for moving said means for projecting transversely relative to the surface of said storage means; means for sensing the position of said means for projecting relative to said storage means; a radiation source for providing radiation to said means for projecting, including a radiation element and a switching circuit in close proximity to said radiation element for selectively de-energizing said radiation element; and a control circuit responsive to said means for sensing for selectively enabling said switching circuit to energize said radiation element to produce pulses of radiation to said means for projecting.
Claim 3
Dependent Claim
34 words
The storage system of claim 1 in which said means for sensing includes means for determining the position of said means for projecting and means for detecting the rotational position of said storage means.
Claim 4
Dependent Claim
18 words
The storage system of claim 1 in which said switching circuit is integrally constructed with said radiation element.
Claim 5
Dependent Claim
19 words
The storage system of claim 1 further including fiberoptic means interconnecting said radiation source and said means for projecting.
Claim 6
Dependent Claim
113 words
A pulsed optical storage system comprising: rotatable storage means; means for projecting a beam of radiation at the surface of said storage means; means for moving said means for projecting transversely relative to the surface of said storage means; means for sensing the position of said means for projecting relative to said storage means; a radiation source for providing radiation to said means for projecting, including a laser and a switching circuit in close proximity to said laser for selectively de-energizing said laser; and a control circuit responsive to said means for sensing for selectively enabling said switching circuit to energize said laser to produce pulses of radiation to said means for projecting.
Claim 7
Dependent Claim
113 words
A pulsed optical storage system comprising: rotatable storage means; means for projecting a beam of radiation at the surface of said storage means; means for moving said means for projecting transversely relative to the surface of said storage means; means for sensing the position of said means for projecting relative to said storage means; a radiation source for providing radiation to said means for projecting, including a laser and a switching circuit in close proximity to said laser for selectively de-energizing said laser; and a control circuit responsive to said means for sensing for selectively enabling said switching circuit to energize said laser to produce pulses of radiation to said means for projecting.
Claim 8
Dependent Claim
117 words
A pulsed optical storage system comprising: rotatable storage means; means for projecting a beam of radiation at the surface of said storage means; means for moving said means for projecting transversely relative to the surface of said storage means; means for sensing the position of said means for projecting relative to said storage means; a radiation source for providing radiation to said means for projecting, including a laser diode, and a switching circuit in close proximity to said laser diode for selectively de-energizing said laser diode; and a control circuit responsive to said means for sensing for selectively enabling said switching circuit to energize said laser diode to produce pulses of radiation to said means for projecting.
Claim 9
Dependent Claim
117 words
A pulsed optical storage system comprising: rotatable storage means; means for projecting a beam of radiation at the surface of said storage means; means for moving said means for projecting transversely relative to the surface of said storage means; means for sensing the position of said means for projecting relative to said storage means; a radiation source for providing radiation to said means for projecting, including a laser diode, and a switching circuit in close proximity to said laser diode for selectively de-energizing said laser diode; and a control circuit responsive to said means for sensing for selectively enabling said switching circuit to energize said laser diode to produce pulses of radiation to said means for projecting.
Claim 10
Dependent Claim
119 words
A pulsed optical storage system comprising: rotatable ablative storage means; means for projecting a beam of radiation at the surface of said storage means; means for moving said means for projecting transversely relative to the surface of said storage means; means for sensing the position of said means for projecting relative to said storage means; a radiation source for providing radiation to said means for projecting, including a radiation element and a switching circuit in close proximity to said radiation element for selectively de-energizing said radiation element; and a control circuit responsive to said means for sensing for selectively enabling said switching circuit to energize said radiation element to produce pulses of radiation to said means for radiation element.
Claim 11
Dependent Claim
119 words
A pulsed optical storage system comprising: rotatable ablative storage means; means for projecting a beam of radiation at the surface of said storage means; means for moving said means for projecting transversely relative to the surface of said storage means; means for sensing the position of said means for projecting relative to said storage means; a radiation source for providing radiation to said means for projecting, including a radiation element and a switching circuit in close proximity to said radiation element for selectively de-energizing said radiation element; and a control circuit responsive to said means for sensing for selectively enabling said switching circuit to energize said radiation element to produce pulses of radiation to said means for radiation element.
Claim 12
Dependent Claim
115 words
A pulsed optical storage system comprising: rotatable ablative storage means; means for projecting a beam of radiation at the surface of said storage means; means for moving said means for projecting transversely relative to the surface of said storage means; means for sensing the position of said means for projecting relative to said storage means; a radiation source for providing radiation to said means for projecting, including laser diode and a switching circuit integrally constructed with said laser diode for selectively de-energizing said laser diode; and a control circuit responsive to said means for sensing for selectively enabling said switching circuit to energize said laser diode to produce pulses of radiation to said laser diode.
Claim 13
Dependent Claim
115 words
A pulsed optical storage system comprising: rotatable ablative storage means; means for projecting a beam of radiation at the surface of said storage means; means for moving said means for projecting transversely relative to the surface of said storage means; means for sensing the position of said means for projecting relative to said storage means; a radiation source for providing radiation to said means for projecting, including laser diode and a switching circuit integrally constructed with said laser diode for selectively de-energizing said laser diode; and a control circuit responsive to said means for sensing for selectively enabling said switching circuit to energize said laser diode to produce pulses of radiation to said laser diode.
Claim 14
Dependent Claim
19 words
The storage system of claim 8 further including fiberoptic means interconnecting said radiation source and said means for projecting.
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) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |