The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 28, 1992

Filed:

Aug. 01, 1990
Applicant:
Inventor:

Shuichi Nagano, Kanagawa, JP;

Assignee:

Sony Corporation, Tokyo, JP;

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 32 ; 369 50 ; 369 58 ; 358342 ;
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.


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