METHOD AND CIRCUIT FOR DETECTING REPRODUCING SIGNAL

摘要

PURPOSE: A circuit for detecting a reproducing signal is provided to use a partial output of a light detection element having less deterioration while reproducing a signal, so as to improve a jitter of a detection signal to raise a system capacity. CONSTITUTION: An optical detection element(204) detects an optical signal reflected from an optical recording media by a multi division. A detector(226) detects combined outputs in a same track direction of the optical detection element(204), combined outputs in a same semidiameter direction, and combined outputs in a diagonal line direction. A control unit detects a data condition recorded on the optical recording media, an interference between data and various system states, and supplies a selecting control signal and a compensation signal on the basis of a detected result. A compensator selects partial outputs of the optical detection element(204) supplied through the detector(226) according to the selecting control signal, and adaptively compensates the partial outputs of the selected optical detection element(204) according to the compensation signal.