Apparatus and method for analysis of optical storage media

Various apparatus and related methods are disclosed that are capable of detecting surface defects on an optical storage media. One example of an apparatus is configured to direct at least one light signal, which may be from one or more lasers, on an outer surface of an optical storage medium, such a...

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Bibliographische Detailangaben
Hauptverfasser: TIMOTHY JOSEPH SKWIOT, JEFFREY ALAN AUFDERHEIDE, JOHN CLARENCE MEYER, IAN BLAIR FREEMAN, JAMES HENRY ECKERMAN, CHARLES CALVIN BROOKS PARTEE
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Various apparatus and related methods are disclosed that are capable of detecting surface defects on an optical storage media. One example of an apparatus is configured to direct at least one light signal, which may be from one or more lasers, on an outer surface of an optical storage medium, such as a CD, DVD or the like, which includes encoded data. The light encounters both the optical storage media surface as well as any smudges, scratches, dents, or other defects thereon. Some or all of the light reflected from the defects and the surface are detected by one or more detectors, which may be a photodiode. The detector(s) produce an output signal commensurate with the detected reflected light, which output is processed to determine whether the encoded data may be accurately read from the optical storage media.