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.
Patent No.:
Date of Patent:
Aug. 22, 1995
Filed:
Mar. 08, 1994
Applicant:
Inventors:
Koji Ishiwata, Kanagawa, JP;
Satoru Tobita, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
369 32 ; 369 47 ;
Abstract
A disc recording/playback apparatus adapted to obtain data of recorded signals at the maximum level within a predetermined period in the signal recorded on an erasable medium per each predetermined period from a signal recording start point to end point and to record them as waveform data of the recorded signal in a different recording area from that of the recorded signal. A compressed envelope waveform of the recorded signal may be displayed on a display section by supplying the waveform data continuously to the display section, so that broad signal changes can be understood by viewing them.