Method and apparatus for reproducing multiply recorded data
US5144500A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 5, 1991 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Jul 5, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/913
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital audio tape recorder is used as a digital data storage recorder and digital signals containing main data and sub-data are recorded in separate areas in each track of a plurality of tracks formed on a recording medium, wherein a predetermined number of tracks constitute a group and a plurality of groups are recorded on the medium. In the sub-area an identification signal is further recorded which indicates whether or not main data recorded in the main areas of a given group is same as the main data recorded in the main areas of preceding and subsequent adjacent groups. When identical data is multiply written for a plurality of units, a division of the multiply written portions is detected, and signal processing is facilitated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.