Method and apparatus for storing text data in subcode packs
US5280572A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1990 |
| Grant date | Jan 18, 1994 |
| Priority date | — |
| Expiry date | Jun 22, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2545
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for encoding data in a text format such as ASCII or EBCDIC on a laser disc or compact disc without affecting the digitized sound by utilizing what is known as the subcode channel of the laser disc or compact disc. By storing text data in the subcode channel region as described herein, it is possible to create subtitles for movies in a number of languages such that the language in which the subtitles appear is user selectable. In this manner, it is possible to create laser discs having subtitle information in, for example, ten languages thereby avoiding the necessity of creating ten separate laser discs, each having a different language used for subtitling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.