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US 5,479,389 AGranted
Eccentricity compensator for optical disk player and compensating method therefor
AssigneeSamsung Electronics Co., Ltd.
InventorJong-tae Ann
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AssigneeSamsung Electronics Co., Ltd.
InventorJong-tae Ann
Estimating the term…
An eccentricity compensator for an optical disk player includes an amplifier for amplifying detected phase difference signals and outputting the amplified phase difference signal to a driving circuit, a system controller for recognizing whether a currently played disk surface is the top or bottom thereof and then comparing the error of the velocity controlling amount of a spindle motor with a reference tolerance, so as to output a control signal according to the comparison result, and a gain controller for, in the case of top-surface playback in which the velocity controlling amount is greater than the reference tolerance, controlling the gain of the amplifier in response to the control signal of the system controller, so as to vary the velocity of the spindle motor, and so as to reproduce normally a double-sided disk whose top and bottom surfaces have different eccentricities.
An eccentricity compensator for an optical disk player having motor driving means in which a horizontal synchronizing signal and a color burst signal of a signal reproduced from an optical disk are detected and associated phases thereof are compared with a reference horizontal synchronizing signal and a reference color burst signal, respectively, so as to control velocity of a spindle motor according to each compared phase difference, said compensator comprising:
An eccentricity compensating method for an optical disk player for detecting a horizontal synchronizing signal and a color burst signal of a signal reproduced from an optical disk and comparing the phases of respective detected signals in relation to a reference horizontal synchronizing signal and a reference color burst signal, respectively, to thereby generate detected phase difference signals so as to control velocity of a spindle motor according to each said compared phase difference, said method comprising the steps of:
An eccentricity compensating method for an optical disk player for detecting a horizontal synchronizing signal and a color burst signal of a signal reproduced from an optical disk and comparing the phases of respective detected signals in relation to a reference horizontal synchronizing signal and a reference color burst signal, respectively, to thereby generate detected phase difference signals so as to control velocity of a spindle motor according to each said compared phase difference, said method comprising the steps of:
Dependencies are inferred from the claim text.