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:
Apr. 30, 1991
Filed:
Apr. 07, 1989
Nobuhiro Chiba, Kanagawa, JP;
Yoshihiro Murakami, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
In an apparatus, such as a digital video tape recorder, for reproducing data signals recorded on helical scan recording tracks each having a plurality of sectors, with two adjacent tracks forming a segment and three segments forming a field, changes of sector and segment identical data are detected during reproduction, and an error signal is generated when a change in a segment occurs without a change in a sector. Either an error correction circuit or a concealing circuit receives the error signal, and is activated to perform error correction or error concealment. As a result, high quality reproduction is achieved, even in a shuttle reproduction mode.