Dynamic magnetic information storage or retrieval – Checking record characteristics or modifying recording...
Reexamination Certificate
2011-04-26
2011-04-26
Mercedes, Dismery E (Department: 2627)
Dynamic magnetic information storage or retrieval
Checking record characteristics or modifying recording...
C360S001000, C360S008000, C360S027000, C360S029000, C360S032000
Reexamination Certificate
active
07933084
ABSTRACT:
A signal reconstruction technique is used to correct for wow and flutter in analog audio recordings. Elements of the recording are used to generate a signal for correcting the output. Involves locating modulated entities such as bias signal (e.g. frequency-modulated, amplitude-modulated, or phase-modulated entities) in the recording, extracting them, and utilizing them as a carrier to synchronize to a master clock, using the irregularity of the anomaly to indicate the speed and pitch information to be corrected. A carrier frequency is determined and applied to a digitized form of the recording. This may be performed even in the absence of a prescribed reference code or tone, such as a pilot tone laid down purposefully at the moment of recording. In the case of signals presumed to have an error in the carrier, a corresponding signal is buffered, and in the case of a presumed error, a last known signal is used for the duration of the error.
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Curley Darryl
Howarth James R.
Rector Timothy
Wolfe Patrick J.
Elman Gerry J.
Elman Technology Law P.C.
Howarth James R.
Mercedes Dismery E
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