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US5566159A
Expired / Lapsed
US
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Optical disk reader
Assignee: Nogatech Ltd
•
Filing: 1994-09-30
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Granted: 1996-10-15
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Expires: 2014-09-30
Abstract
Abstract An optical disk reader system comprises (1) a wide area illumination source for illuminating at least a part of one track of an optical disk; (2) a detector for detecting light reflected from the optical disk illuminated by the wide area illumination source; and (3) a detector for summing the light in the along-track direction detected by the detector.
Inventors
- 👤 Shlomo Shapira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:11
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/12; G11B7/13; G11B7/131; G11B7/004; G11B7/005; G11B7/125; G11B7/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
52 words
An optical disk reader system comprising: an LED illuminator for illuminating at least a part of one track of an optical disk; means for detecting light reflected from the optical disk illuminated by said LED illuminator; and means for summing the light reflected along a track direction detected by said detecting means.
Claim 2
Dependent Claim
52 words
An optical disk reader system comprising: an LED illuminator for illuminating at least a part of one track of an optical disk; means for detecting light reflected from the optical disk illuminated by said LED illuminator; and means for summing the light reflected along a track direction detected by said detecting means.
Claim 3
Dependent Claim
31 words
A system according to claim 1, wherein said means for detecting light reflected from the optical disk and for summing the light reflected along the track direction comprise a CCD/TDI detector.
Claim 4
Dependent Claim
80 words
A system according to claim 1, comprising: an LED illuminator for illuminating at least one track of an optical disk; an optical system for projecting at least part of the beam from said LED illuminator onto the optical disk, and for imaging the illuminated area of the disk onto a detector; a detector for detecting said beam reflected from said optical disk and for converting said detected light into an electrical signal; and a processor for processing said electric signal.
Claim 5
Dependent Claim
25 words
A system according to claim 1 or 3, comprising a bandpass filter for passing at least part of the light emitted by said LED illuminator.
Claim 6
Independent Claim
78 words
A method for reading data from an optical memory disk, comprising illuminating at least one track of an optical memory disk with a beam from an LED illuminator, collimating at least a part of the beam from said LED illuminator and part of the light reflected from said illuminated optical memory disk, detecting said reflected light and summing the light reflected along a track direction, converting said reflected light into an electric signal, and processing said electric signal.
Claim 7
Independent Claim
78 words
A method for reading data from an optical memory disk, comprising illuminating at least one track of an optical memory disk with a beam from an LED illuminator, collimating at least a part of the beam from said LED illuminator and part of the light reflected from said illuminated optical memory disk, detecting said reflected light and summing the light reflected along a track direction, converting said reflected light into an electric signal, and processing said electric signal.
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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) | 1999-10-15 | 2000-04-15 | 2000-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-15 | 2004-04-15 | 2004-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-15 | 2008-04-15 | 2008-10-15 | $7700.00 | Window Closed / Lapsed |