Disk player with peak level detection during high-speed playback

Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium

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Details

369 50, 369 58, 358342, G11B 700

Patent

active

051345986

ABSTRACT:
A disk player includes a disk reproducing unit having a normal reproducing mode in which a disk on which digital audio signals are recorded is reproduced in a normal mode at the timing of normal reproducing clocks and a high speed reproducing mode in which the disk is reproduced in a high speed mode at the timing of high speed reproducing clocks having a frequency higher than the frequency of the normal reproducing clocks, and a peak level detection unit for integrating the digital audio signals obtained upon reproducing the disk by the disk reproducing unit operated at the high reproducing speed, at each predetermined time period, comparing the integrated values for the time periods to find a maximum integration value and outputting the maximum integration value as the peak level.

REFERENCES:
patent: 4646280 (1987-02-01), Toyosawa
patent: 4796247 (1989-01-01), Vogelsang
patent: 4964109 (1990-10-01), Yoshioka
patent: 5008872 (1991-04-01), Tomoda et al.

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