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:
May. 31, 1988
Filed:
Dec. 11, 1985
Applicant:
Inventors:
Assignee:
Willi Studer AG & Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 48 ; 360 53 ;
Abstract
Methods and apparatus for recording and reproducing coded digital signals typically assign values of a signal to 2 categories which are separately coded, delayed differently, and subsequently recorded. In order to reduce the loss of such values in the cases of damage to the recording to the greatest possible extent, the values of the signals are coded at least twice in parallel and recorded onto several tracks. In one of the recordings, the sequence of values is modified in such a way that even major damage to the recording can be accommodated without producing non-correctable errors.